项链

旋转连接杆（齿轮齿条型）

Coracoclavicular ligament wicresoft rebuilds locator

... 本实用新型涉及医疗器械领域，尤其涉及种喙锁韧带微创重建定位器，包括：定位器手柄，定位器手柄包括手柄部和头部，定位钩，定位钩包括杆部和钩部，和导向管，导向管中心具有导丝孔，定位器手柄的头部具有若干导向孔，导向管穿设在导向孔内，定位器手柄头部还包括用于定位导向管在导向孔内位置的定位机构，定位钩固定在定位器手柄的手柄部，导向孔的轴线与定位钩的钩部相交。本实用新型提供了种喙锁韧带微创重建定位器，定位钩和导向孔(或导向管)的夹角可调节，可以根据实际的手术需求来调节定位钩和导向孔(或导向管)的夹角，以达到最佳的定位位置，保证了定位精度。 ...

Station construction method of multi-hole transverse combination station hall based on mechanical method and pipe jacking method

The invention discloses a station construction method based on a mechanical pipe-jacking method multi-hole transverse combination station hall, which is characterized in that station halls are arranged in plots on two sides of a road in a manner of two end halls, the end halls are used as pipe-jacking starting sites, and a pipe-jacking tunnel transversely passes through a municipal road to serve as an entrance and exit passage; and a station hall-platform layer escalator channel is arranged in the middle of the channel and communicates station hall spaces at the two ends in the land parcel with a platform layer space. And the current situation that subway station construction and surrounding public space are separated in China is improved. The mechanical pipe jacking method construction process overcomes the defects that a current subway station occupies a road for construction for a long time, the mechanical degree is low, the labor force dependence degree is high, and safety quality control ...

Method for improving heat resistance and fragrance retention of garlic essential oil

The invention provides a method for improving heat resistance and fragrance retention of garlic essential oil, and relates to the technical field of chemical processing. The method comprises the following steps: peeling garlic, washing, crushing, carrying out enzymolysis, distilling, condensing, carrying out oil-water separation to obtain garlic essential oil, adding vitamin C ethyl ether, and carrying out heating reaction under a sealed condition to obtain the garlic essential oil with improved heat resistance and fragrance retention. The concentration of the stability characteristic flavor substance sulfide of the garlic essential oil treated by the method disclosed by the invention is remarkably improved, and the thermal stability and fragrance retention of the garlic essential oil are also remarkably improved, so that the use amount of the garlic essential oil can be reduced by about 30-50% in the application of food processing, biological medicine and the like, the use cost is reduced ...

VOICEPRINT VERIFICATION METHOD AND DEVICE

Embodiments of the present invention provide a voiceprint verification method and device. The voiceprint verification method comprises receiving verification voice data relating to a verification phrase; generating a verification voiceprint on the basis of said verification voice data; determining whether a similarity value between the verification voiceprint and a reference voiceprint conforms to a preset similarity value; and, if the similarity value between the verification voiceprint and a reference voiceprint conforms to a preset similarity value, then determining there is a match between the verification voiceprint and the reference voiceprint.

旋转连接杆（连杆型）

Electrical cabinet convenient for heat dissipation

The invention relates to the technical field of electrical cabinets, and provides an electrical cabinet convenient for heat dissipation, which comprises an electrical cabinet shell, an electrical element mounting shell, an electrical element, a first heat dissipation part and a second heat dissipation part, and is characterized in that the electrical cabinet shell comprises a cabinet body, a dustproof net is arranged on the outer side of the cabinet body, the electrical element mounting shell is fixedly mounted in the cabinet body, and the first heat dissipation part and the second heat dissipation part are fixedly mounted in the cabinet body. The electrical element is installed on the front face of the electrical element installation shell, the front face and the side face of the electrical element installation shell are provided with a first ventilation mesh hole and a second ventilation mesh hole respectively, the electrical element covers the surface of the first ventilation mesh hole ...

Wall tiling robot

The invention provides a wall tiling robot. The wall tiling robot comprises a moving platform, a three-degree-of-freedom parallel mechanism, a waist part, a first telescopic rod, a second telescopic rod, a third telescopic rod, a wrist part and a suction cup. The moving platform comprises a platform body, four Mecanum wheels and a ceramic tile containing box. The three-degree-of-freedom parallel mechanism comprises a lower platform, an upper platform and three motion branch chains with the same structure, the three motion branch chains are spatially and symmetrically connected between the lower platform and the upper platform, and the lower platform is fixedly mounted on the upper surface of the mobile platform; the waist part is fixedly mounted on the upper surface of an upper platform of the three-degree-of-freedom parallel mechanism; the lower end of the first telescopic rod is fixedly connected to the upper surface of the waist part, and the upper end is connected to a groove in the ...

LOW-TEMPERATURE SUPERCONDUCTING DEVICE FOR MEASURING GRAVITY

A low-temperature superconducting device for measuring gravity, comprising a low-temperature container (1), a refrigerating machine (2), a rotor chamber (4), a superconducting rotor (5), an upper levitation coil (6), a lower levitation coil (6'), an upper electrode (7), an intermediate electrode (8), a lower electrode (9), a magnetic shielding chamber (11) and a superconducting quantum interference device (14). The low-temperature superconducting device is refrigerated by the refrigerating machine (2). The intermediate electrode (8) arranged in the magnetic shielding chamber (11) generates a voltage when the superconducting rotor (5) experiences displacement because of a change in gravity, so that the superconducting quantum interference device (14) adjusts the operating current of the upper levitation coil (6) or the lower levitation coil (6'), thereby enabling the superconducting rotor (5) to return to the original central balance location. The change in gravity can be determined by the ...

TESTING DEVICE AND TESTING SYSTEM

A testing device comprises a testing bench (10) for testing a product, a base (20) and a bracket (30) which are connected with the testing bench (10), a switch (40) for controlling the power-on/off of the testing bench (10), and a clamp (50) for clamping the product; the clamp (50) is provided with a clamping block (51) for triggering the switch (40), the switch (40) is mounted on the base (20), and the clamp (50) is movably connected to the bracket (30) and can move relative to the testing bench (10). In the process that the clamp (50) moves toward the testing bench (10), the switch (40) is triggered by the clamping block (51) and the testing bench (10) is powered off. In the case that the clamp (50) is connected to the testing bench (10), the clamping block (51) is detached from the switch (40), and testing bench (10) is powered on to test the product; In the process that the clamp (50) moves to leave the testing bench (10), the switch (40) is triggered by the clamping block (51), the ...

THERMOREGULATOR

A thermoregulator comprises a valve body (102) internally provided with an accommodating cavity (108) and a thermal element (204, 205) mounted in the accommodating cavity (108). The accommodating cavity (108) is in communication with the exterior through at least three ports such as a first port (104), a second port (105), and a third port (106). The thermal element is mounted in the valve body (102) through two elastic components (203, 206). A fixedly mounted annular closure ring (111) is disposed in the accommodating cavity (108). At least most of the thermal element (204, 205) is located between the third port (106) and the closure ring (111). Through such arrangement, rapid heating of transmission fluid is ensured when the temperature of the transmission fluid is low, thereby ensuring the lubrication performance of a transmission. In addition, a processing precision requirement for components and parts can be reduced and manufacturing and mounting are more convenient.

项圈

Road sweeper with lifting buffer structure

The invention relates to the technical field of environmental sanitation sweeping, in particular to a road sweeper with a lifting buffer structure. According to the technical scheme, the sweeping device comprises a frame, a sweeping brush and a two-way lead screw, a collecting box is fixedly installed at the top of the frame, a mounting frame is fixedly installed at the top of the frame on the other side of the collecting box, a sliding rod is fixedly connected to the top of the frame on one side of the mounting frame, and a fixing block is slidably installed on one side of the sliding rod through a sliding seat; a two-way lead screw is rotationally installed at the bottom of the fixing block through a connecting block, and a threaded frame is installed on the outer side of the two-way lead screw in a threaded mode. A second motor is powered on to operate to drive a bidirectional lead screw to rotate, the rotating bidirectional lead screw drives two sets of threaded frames to horizontally ...

SUPERCONDUCTING MAGNETIC LEVITATION BASED NORTH-SEEKING DEVICE AND NORTH-SEEKING METHOD THEREOF

A superconducting magnetic levitation based north-seeking device and north-seeking method thereof include a low temperature container (5), a refrigerator (6), a direction reference line (7), a heat transfer screen (8), a rotor cavity (9), a superconducting rotor (10), a radiation shield (11), an equatorial signal read-out figure (12), levitation coils (13), a driving coil (14), a polar-axis sensor (15), an equatorial sensor 1 (16) and an equatorial sensor 2(17). The equatorial signal read-out figure (12) on the surface of the superconducting rotor (10) is detected by the equatorial sensors, and then through calculation, the angular velocity components ωι andω2 of the horizontal component of the rotational angular velocity of the earth on the optical-axes of the two equatorial sensors can be obtained. By means of the formula α=arctan（ωι/ω2）, the angle α between the equatorial sensor 1 (16) and the true north direction can be calculated. The external interference of the rotor is reduced because ...

WAVEBAND ROUTING METHOD BASED ON SERIES STRUCTURE LAYERING OPTICAL CROSS CONNECTION

A waveband routing method based on a series structure layering optical cross connection, the method comprising: S1, respectively arranging a series structure layering optical cross connection in a plurality of network nodes; S2, based on the plurality of network nodes, constructing a waveband switching elastic optical network based on the series structure layering optical cross connection; S3, receiving a connection request from a first network node to a second network node, and allocating a waveband path and an optical path for the connection request; and S4, according to an inclusion relationship between the waveband path and the optical path, allocating a sub-path for the connection request so as to route the connection request with a waveband. In the implementation of the waveband routing method based on a series structure layering optical cross connection, by allocating a waveband path and an optical path to a connection request, and allocating a sub-path for the connection request ...

SHARED PRESENTATION METHOD AND SYSTEM THEREOF

The present invention provides a shared presentation method and a system and mobile device thereof. The shared presentation method comprises steps of: an initiator establishing a shared studio, and sending invitation information of the shared studio through a network; a receiver that receives the invitation information participating in the shared studio through establishing a network connection; the initiator sending a presentation document and a play control instruction on the presentation document to the receiver that participates in the shared studio; and the receiver receiving the presentation document and the play control instruction, and locally executing a play control operation on the presentation document according to the play control instruction. The mobile device comprises the shared presentation system. The shared presentation method and the system and mobile device thereof provided by the present invention are capable of simultaneously presenting a demonstration document on ...

DISTRIBUTED SYSTEM AND CLOSED-LOOP PHASE SYNCHRONIZATION METHOD THEREFOR BASED ON CONTINUOUS NEGATIVE FEEDBACK

The present invention is applicable in the technical field of radio communications. Provided are a distributed system and a closed-loop phase synchronization method based on continuous negative feedback. With the present invention, a large step-size disturbance is employed in several initial time slots when a received signal strength is less than a next-stage threshold, thus allowing for rapid growth of the received signal strength of a receiver; a small step-size disturbance is employed in later-stage time slots when the received signal strength is less than a next-stage threshold, thus allowing for acquisition of the stability of the prior art, and iteratively allowing signal strengths of the receiver to converge to an ideal situation; also, when the receiver repeatedly and successively feeds back "-1" bit information, repeated feedback of "-1" bit information by the receiver is suppressed, thus allowing an algorithm to return to a normal algorithm convergence process.

Emergency interconnection method and device for multi-unit direct current system of power plant

The invention provides an emergency interconnection method and device for a multi-unit direct current system of a power plant, and relates to the technical field of direct current power systems, and the method comprises the steps: determining a to-be-interconnected target unit from a plurality of units in response to the determination that any unit in the multi-unit direct current system is in a fault state at present; switching on a first emergency interconnection switch and a second emergency interconnection switch corresponding to the any unit, so that the any unit can be switched on based on a first emergency interconnection cable connected with the first emergency interconnection switch and a second emergency interconnection cable connected with the second emergency interconnection switch; and acquiring the emergency power supply from the direct current bus of the target unit. Therefore, when a certain unit breaks down and the direct-current system and the standby charging device cannot ...

Retail power supplier pricing method and system considering sharing of multiple intelligent buildings

The invention discloses a retail power supplier pricing method and system considering sharing of multiple intelligent buildings, and relates to the technical field of electric power, and the method comprises the steps: constructing a benefit model of a retail power supplier; based on the benefit model, time-of-use electricity price data is generated by adopting a particle swarm algorithm; the multiple intelligent buildings obtain the isolated total operation cost based on the time-of-use electricity price data; the multiple intelligent buildings obtain shared total operation cost, an electric energy interaction amount set and shared total electric quantity for purchasing electricity from a retail electric power supplier based on the time-of-use electricity price data; subtracting the shared total operation cost from the isolated total operation cost to obtain a redistribution total amount; obtaining the contribution degree of each intelligent building in the plurality of intelligent buildings ...

LOGIN AUTHORISATION METHOD AND APPARATUS, AND LOGIN METHOD AND APPARATUS

The present application relates to a login authorisation method and apparatus, and a login method and apparatus. The login authorisation method comprises: receiving a login request sent by a terminal; extracting a login credential and a terminal identifier from the login request, wherein the extracted login credential is generated and issued to the terminal when the terminal finishes the previous login authorisation; querying a login credential, which is generated and stored when finishing the previous login authorisation, corresponding to the terminal identifier; when the extracted login credential is consistent with the queried login credential, performing login authorisation corresponding to the terminal identifier; updating the stored login credential corresponding to the terminal identifier; and issuing the updated login credential to the terminal.

Copper carbonate mineralized nanoparticles entrapped with biomacromolecules as well as preparation method and application of copper carbonate mineralized nanoparticles

The invention provides a biomacromolecule-entrapped copper carbonate mineralized nanoparticle and a preparation method and application thereof.The nanoparticle comprises a copper carbonate mineralized nanoparticle body and a biomacromolecule drug, and the biomacromolecule drug is stably entrapped by the copper carbonate mineralized nanoparticle body in the mineralization process; the copper carbonate mineralized nanoparticles are prepared by mineralizing copper ions and carbonate ions, the biological macromolecular drugs comprise nucleic acid drugs and protein drugs, and the drug loading capacity of the copper carbonate mineralized nanoparticles to the biological macromolecular drugs is 0-60%. According to the invention, through the strong acting force stable combination between the copper ions and the biomacromolecule drugs, the biomacromolecules are further stably loaded in the mineralized nanoparticles in the mineralization process, and the mineralized nanoparticles carry the biomacromolecule ...

METHOD AND DEVICE FOR KEEPING MAIL ADDRESS SECRET

Disclosed are a method and device for keeping mail address information secret. The method for keeping mail address information secret comprises: acquiring a secrete group address when a sender sends a mail; and replacing the mail address of the sender with the secrete group address and sending the mail to a mail address of a recipient. In the method and device for keeping mail address information secret in the present invention, the mail address of a sender is replaced with a secrete group address, so as to keep mail address information of the sender secret.

DETERMINATION METHOD AND SYSTEM FOR A CONTENTION WINDOW IN AN ADAPTIVE BACKOFF ALGORITHM

The present invention is suitable for use in the technical field of electronic communications and provides a determination method and system for a contention window (CW) in an adaptive backoff algorithm. The method comprises the following steps: step A: initializing a system, and initializing the value of the CW to be a system default value CWmin; step B: recording channel state and combining with historical channel state, and updating the CW value on the basis of the system default value of step A; step C: obtaining a backoff time slot by means of the updated CW value, obtaining, during said backoff time slot, channel utilization, and further obtaining transmission probability according to channel utilization; step D: obtaining a contention window change factor, then determining the CW according to the CW change factor and the transmission probability. The present invention obtains an optimized value of a contention window change factor by means of considering addition of new variable ...

OPEN NUCLEAR MAGNETIC RESONANCE MAGNET SYSTEM HAVING IRON RING STRUCTURE

An open nuclear magnetic resonance magnet system having an iron ring structure. A superconducting coil (1) and a superconducting switch (14) form a closed current loop to generate a magnetic field, and the generated magnetic field obtains a magnetic flux loop and executes magnetic field shielding via upper and lower iron yokes (3) and lateral iron yokes (13). The magnet system generates the required magnetic field in a magnet imaging central area (15) via the superconducting coil (1). In order to balance the great electromagnetic force between the superconducting coil (1) and the upper and lower iron yokes (3), an annular iron ring (4) is installed in the inner aperture of a low temperature container (2). The magnetic field distribution between the superconducting coil (1) and the upper and lower iron yokes (3) is changed via the iron ring (4), thereby reducing the interactive electromagnetic force therebetween.

Post-cast strip water stop scale mesh welding supporting system and construction method

The invention provides a post-cast strip water stop fish scale mesh welding supporting system and a construction method. The post-cast strip water stop fish scale mesh welding supporting system comprises a main frame base, and a first rectangular frame and a second rectangular frame which are arranged at intervals are fixed to the top of the main frame base; the top of the first rectangular frame is provided with a top height adjusting mechanism used for supporting the fish scale net pieces. A clamping mechanism used for clamping and fixing the water stop steel plate is arranged at the interval position between the first rectangular frame and the second rectangular frame. A bottom height adjusting mechanism is mounted at the bottom end of the main frame base; a lateral adjusting mechanism is installed on the side face of the main frame base. The system can effectively accelerate the welding construction speed of the post-cast strip water stop fish scale mesh, improve the welding quality ...

DEMONSTRATION DOCUMENT VIEWING METHOD AND SYSTEM THEREOF FOR MOBILE DEVICE

Provided are a demonstration document viewing method and a system thereof for a mobile device. The method comprises the steps of: judging a screen direction according to a sensing signal of a gravity sensor; when the screen direction is vertical, displaying the slide thumbnail of the demonstration document at the lower side of a screen in the horizontal distribution; and when the screen direction is horizontal, displaying the slide thumbnail of the demonstration document at the left side or the right side of the screen in the vertical distribution. When a user opens a demonstration document, the demonstration document viewing method for a mobile device of the present invention switches over a display manner of a slide thumbnail of the demonstration document automatically according to a screen direction which is sensed by a gravity sensor, thereby being able to display same in a more suitable manner according to different screen directions, and facilitating the viewing and operation of the ...

FOUNTAIN CONTROL METHOD AND SYSTEM BASED ON NATURAL HUMAN-MACHINE INTERACTION TECHNOLOGY

Provided is a fountain control method based on natural human-machine interaction technology, comprising: collecting natural human-machine interaction data (10); parsing the natural human-machine interaction data, and outputting a control command packet (20); and converting the control command packet into a control signal (30) complying with a fountain system. Further provided is a fountain control system based on natural human-machine interaction technology, comprising: a natural human-machine interaction data collection unit (101) used for collecting natural human-machine interaction data of an operator; a natural human-machine interaction data processing unit (102) used for parsing the collected natural human-machine interaction data, and processing same into a control command packet to output; a control command packet conversion unit (103) used for converting the control command packet into a control signal complying with a fountain system to achieve control of a fountain device. The ...

Research experiment table and method for radiation heat transfer characteristics of flue gas in dilute-phase region

The invention discloses a dilute-phase region flue gas radiation heat transfer characteristic research experiment table and method, and the experiment table comprises a main bed body system which is provided with a flue gas inlet and outlet structure, a pressure measurement hole, a flue gas temperature measurement hole, and a heating insertion hole; the flue gas distribution system comprises a gas distribution system for providing a plurality of gases and a water vapor distribution system for providing water vapor, the gas flow is controllable, and the flue gas distribution system is communicated with the main bed body system and provides flue gas with different component proportions for the main bed body system; the bed body heating system comprises a plurality of heating devices inserted into the main bed body system and is used for heating flue gas in the main bed body system; and the measuring system is used for measuring the flue gas temperature in the main bed body system and the ...

Grinding machining method for improving step precision of overflow brick and overflow brick based on grinding machining method

The invention discloses a grinding machining method for improving the step precision of an overflow brick and the overflow brick based on the grinding machining method, and belongs to the technical field of overflow pull-down production of substrate glass. According to the method, a grinding head B is moved by a depth in the X direction, then the grinding head B moves up and down on the overflow brick to be machined in the Z direction and feeds in the Y direction at the same time, and grinding is conducted in a reciprocating mode till the step length of the length C is completed in the Y direction; the path of a cutter is re-planned in a horizontal up-down grinding and vertical feeding mode, the cutter feeding speed can be increased due to the fact that the diameter of the cutter used for horizontal grinding is large, cutter relieving is avoided, the cutter feeding path of up-down grinding is adopted, equivalently, the whole bottom edge of the cutter participates in grinding, the roughness ...

THERMOREGULATOR AND THERMOREGULATOR COMPONENT

A thermoregulator comprises a valve body (102) and a thermal element. The thermal element comprises a main body (204) containing thermosensitive materials. An opening end of the valve body (102) is sealed through an end cover component. The thermoregulator comprises a first elastic element (203) and a second elastic element (206). The first elastic element (203) is disposed at one side of the end cover component, and one end abuts the end cover component, and the other end at least leans against or indirectly leans against a mandrel (205) when moving. The second elastic element (206) is disposed at one side of a third port (106), and one end abuts an inner wall portion or a bottom wall portion of a valve body accommodating cavity (112), and the other end abuts the main body (204).

SCMA detection method based on deep learning and related equipment

The invention discloses an SCMA detection method and device based on deep learning, an intelligent terminal and a computer storage medium, and the method comprises the steps: carrying out the preprocessing of a received signal according to channel information, so as to eliminate the amplitude and phase distortion; obtaining an input signal of a channel sub-network according to the pre-processed receiving signal, performing data conversion on the input signal through the channel sub-network, and splicing output signals of a plurality of channel sub-networks to obtain a spliced signal; and through hard parameter sharing, detecting the spliced signal according to a preset neural network model to obtain an input data symbol. Compared with the prior art, the method has the advantages that the model complexity is reduced, and the detection efficiency is improved.

Education scene sharing course video title detection method and system

The invention relates to the technical field of education video detection, in particular to a method and a system for detecting a video title of an education scene sharing course. The method comprises the following steps: S1, extracting a key frame in a video; s2, detecting a title part in the key frame through a target detection model; s3, recognizing a title text of a title part in the key frame in an OCR character recognition mode; and S4, carrying out duplicate removal processing on the title text. By means of key frame extraction, title detection, character recognition and duplicate removal, the title of the course video of the education scene can be automatically obtained, and compared with an existing manual obtaining mode, the efficiency can be remarkably improved, the process is quicker, and manpower and material resources can be effectively saved; according to the method, hierarchical structure arrangement is carried out on the title text, so that curriculum display can be conveniently ...

METHOD AND DEVICE FOR INTERCEPTING SPAM

... a method and a device for intercepting spam are provided by the embodiment of the present invention. The method mainly includes: A, text data of a mail which needs to be filtered is acquired; B, whether a keyword used for filtering mail in a character string included by a resource pool of character string exists in the text data is judged, if yes, whether the character string corresponding to the keyword included by the resource pool of character string exists in the text data is rejudged; C, whether the mail is spam is confirmed in accordance with the result of the rejudgement in the step B and a preset judgement policy, and the spam is intercepted. Application of the present invention can improve speed and efficiency of scanning, and realize real-time filtering the mail in the condition that the scale of the pool of character string is biggish.

HIGH MAGNETIC FIELD SUPERCONDUCTING BODY SYSTEM HAVING LARGE SEPARATION GAP

A high-magnetic-field superconductive magnetic body system having a large separation gap is provided. A superconductive coil in the system includes a low-temperature superconductive coil (16) and a high-temperature superconductive coil (17). The superconductive coil is connected to a cold screen (3) and a low-temperature container flange (2) through a support drawing rod (8) so that the superconductive coils are supported in the low-temperature container integrally. A heat switch (7) is connected to a first level cold head and a second level cold head of a refrigerator (1). The second level cold head of the refrigerator (1) is connected to a strengthening support flange (10) for a magnetic body through a cold conductor band (5). The flange (10) is located at the two ends of the low-temperature superconductive coil (16) and the high-temperature superconductive coil (17). The superconductive magnetic body system has a horizontal-direction room temperature hole (12) and a vertical-direction ...

METHOD AND APPARATUS FOR HANDOVER BETWEEN UNLICENSED MOBILE ACCESS NETWORK AND CELLULAR COMMUNICATION NETWORK

The present invention relates to the technology for handover between an unlicensed mobile access network and a cellular communication network. According to the first aspect of the present invention, a method for handing over the communication connection from an unlicensed mobile access network to a cellular communication network in a mobile terminal is provided, the method comprises the following steps: acquiring the location information and/or moving direction and/or moving velocity of said terminal (301); determining the handover timing or handover probability of said handover at least partly according to said location information, moving direction and moving velocity (302); initiating the communication connection between said mobile terminal and said cellular communication network for handover preparation when said handover timing is less than a preset value or said handover probability is more than a preset value (303); performing said handover (304). The handover between an unlicensed ...

ELECTRONIC EXPANSION VALVE、STEPPING MOTOR AND REVERSING VALVE

A valve comprises an electric control part(10) and a mechanical part(20), said electric control part(10) comprising a bus signal receiving/delivering module(11) which is used for receiving a bus control signal and delivering it to a central processing module(12). The central processing module(12) extracts the opening information of the valve body from the bus control signal, generates a corresponding pulse control signal by combining the opening information with a current position information of a stepping motor(21) reading from a data storage module(15), and then deliveries the pulse control signal to the driving module of the stepping motor(13). The driving module of the stepping motor(13) drives the stepping motor(21) according to the pulse control signal in order to adjust the opening of said valve.

Projection area determination method and device and computer readable storage medium

The embodiment of the invention relates to the technical field of vehicle design, and discloses a projection area determination method and device and a computer readable storage medium, and the method comprises the steps: building a projection line on image bearing equipment based on simulation point data, second simulation data and third simulation data; selecting a plurality of first alternative reflection points on the projection line, and determining a reflection point of the projection point based on the distance between the eye point of the user and the reflection line corresponding to each first alternative reflection point; and determining a projection area of the projection equipment on the image bearing equipment based on the reflection points of all the projection points. According to the technical scheme, the range of the reflection point of the projection point is narrowed to the projection line on the image bearing equipment, so that compared with the scheme of directly finding ...

Method and device for calculating and evaluating sewage treatment capacity of sewage plant

The invention provides a method and a device for calculating and evaluating sewage treatment capacity of a sewage plant. The method comprises the following steps: acquiring actual daily sewage treatment capacity data by using an online flowmeter, and acquiring TN actual concentration data of inlet water and outlet water, TP actual concentration data of the inlet water and outlet water and BOD5 actual concentration data of the inlet water and outlet water by using an online chemical instrument; and calculating the material consumption energy-saving capacity F4 of the sewage plant according to the actual daily sewage treatment capacity data, the TN actual concentration data of the inlet water and the outlet water, the TP actual concentration data of the inlet water and the outlet water, and the BOD5 actual concentration data of the inlet water and the outlet water. The method has the advantages that the material consumption energy-saving capacity F4 of the sewage plant is calculated, a calculation ...

METHOD AND SYSTEM FOR SEEKING OPTIMAL RELAY POSITION BASED ON STEP LENGTH THRESHOLD VALUE MECHANISM

The present invention is applicable to the technical field of wireless communications. Provided is a method for seeking an optimal relay position based on a step length threshold value mechanism. The steps thereof comprise: A, a mobile relay, at any position on a fixed-height plane of a test location, receiving a test signal from a source end, amplifying same and forwarding same to a destination end; B, the destination end calculating communication performance according to the received signal, generating single-bit information according to a result of comparison with the communication performance of a known optimal received signal, and feeding back same to the mobile relay; C, the mobile relay calculating a position of the next moment according to the single-bit information and moving thereto; and repeating A-C until an optimal relay position is found. By means of the present invention, an optimal relay position can be found within a global range by relying only on a positioning function ...

WIRELESS MULTI-HOP NETWORK DATA TRANSMISSION AND RECEPTION METHOD BASED ON SMART ANTENNA TECHNOLOGY

The present invention applies to the field of wireless mobile communications and provides a wireless multi-hop network data transmission and reception method based on smart antenna technology, said data transmission method comprising: a1, obtaining destination address information from a packet to be sent; a2, according to the obtained destination address information, determining a destination node from all of the coverage nodes covered by a transmitting node; a3, determining the desired angle and interference angle according to the determined destination node and other nodes covered by the transmitting node; a4, calculating an adaptive beamforming weight vector according to desired angle and interference angle, such that the main lobe is aligned with the desired signal and the zero point is aligned with the interference signal; a5, according to the adaptive beamforming weight vector, weighting the packet and sending to a destination node. The wireless multi-hop network data transmission ...

FACE CALIBRATION METHOD AND SYSTEM, AND COMPUTER STORAGE MEDIUM

A face calibration method comprises: performing preprocessing on an image; extracting an angular point in the preprocessed image, and performing filtering and combination on the angular point to obtain a connected region of the angular point; extracting a centroid in the connected region of the angular point; and matching the centroid with a face template, calculating the matching probability between the centroid and the face template, positioning a region formed of the centroid, of which the matching probability is larger than or equal to a preset value, as a candidate face region. By adopting the above method, the accuracy rate and efficiency of calibrating a face can be improved. In addition, a face calibration system and a computer storage medium are further provided.

Insect-resistant protein as well as preparation method and application thereof

The invention discloses a preparation method and application of a novel insect-resistant protein, and belongs to the field of genetic engineering. The invention provides a new insect-resistant protein and a coding gene thereof, the new protein is an insect-resistant mutant protein, and the insect-resistant mutant protein is a protein obtained by mutating Cry1Ie4 protein at the 174th site, the 209th site and the 260th site. The application refers to the application of the coding gene in cultivation of insect-resistant transgenic maize plants, the application in preparation of insect-resistant mutant proteins and the application of the insect-resistant mutant proteins in preparation of insecticides. According to the invention, the Cry1Ie4 protein is artificially modified, so that the activity of the Cry1Ie4 protein is improved.

POWER AMPLIFIER CIRCUIT AND METHOD FOR MODULATING LOAD IMPEDANCE THEREOF

A power amplifier circuit and a method for modulating a load impedance thereof, wherein the power amplifier circuit comprises: a main power amplification circuit (10) for amplifying a power signal on a main circuit; and an auxiliary power amplification circuit (20) serving an auxiliary circuit for the main power amplification circuit (10) and amplifying a power signal on the auxiliary circuit, wherein the main power amplification circuit (10) and the auxiliary power amplification circuit (20) are connected to a combined output point (A) via an adjustment line (102) arranged in the main power amplification circuit (10), the combined output point (A) is the intersection of the main power amplification circuit (10) and the auxiliary power amplification circuit (20) which are connected in parallel, and the adjustment line (102) is used for matching a load impedance for a main power amplifier tube (104) in the main power amplification circuit (10). The technical problem in the related art that ...

Substrate chuck device

The invention discloses a substrate chuck device which comprises an annular gear, clamping assemblies, a base and a driving mechanism, the annular gear and the base are coaxially arranged, the clamping assemblies are arranged on the base at intervals in the circumferential direction of the base and are in transmission connection with the annular gear, and the driving mechanism drives the annular gear so that the annular gear can drive the clamping assemblies to clamp or release a substrate. The driving mechanism comprises a first magnetic assembly and a second magnetic assembly, and the first magnetic assembly is fixed to the base; the second magnetic assembly is fixed to the annular gear, and the second magnetic assembly and the first magnetic assembly attract or repel each other so as to drive the annular gear to rotate relative to the base, so that the clamping assembly clamps or releases the substrate. The substrate clamping device has the advantage that the substrate can be rapidly ...

METHOD AND SYSTEM FOR SEEKING OPTIMAL RELAY POSITION BASED ON ACCUMULATED POSITIVE FEEDBACK VARIABLE STEP LENGTH

The present invention is applicable to wireless communications. Provided is a method for seeking an optimal communication position of a single mobile relay, and the steps thereof comprise: A, a mobile relay initializing position information about said relay and recording initial position information at any start position of a fixed track, and then receiving a training sequence transmitted from a source end, amplifying same, and then forwarding same to a destination end; B, the destination end calculating the performance of a received signal according to the received amplified training sequence, and feeding single-bit information back to the mobile relay according to a calculation result; and C, the mobile relay calculating a position of the next moment according to the single-bit information which is fed back, moving to the position of the next moment, and returning to step A until an optimal relay position is finally determined. By means of the present invention, the performance of relay ...

Check code generation method, data recovery method, medium and electronic equipment

The invention belongs to the technical field of data recovery, and particularly relates to a check code generation method, a data recovery method, a medium and electronic equipment, and the method comprises the steps: S1, calculating first check data of source data through a CRC-16 algorithm; s2, calculating the source data by adopting a check algorithm of a bit lookup table mode to obtain second check data; s3, merging the first verification data and the second verification data to generate a final verification code; according to the check code generated by the check code generation method, the situation that the check code obtained through calculation of non-zero data is 0 can be effectively avoided, only half byte is added to the check code, and both accuracy and storage space are considered.

Calibration method for dual-wavelength temperature measurement system

The invention discloses a calibration method for a dual-wavelength temperature measurement system, which comprises the following steps of: modeling a physical model of a standard radiation source in a high temperature range, and fitting the real temperature of the standard radiation source according to the actual spectral data of the standard radiation source measured by an integrating sphere; after the relation between the output signal of the dual-wavelength temperature measurement system and the actual spectral data of the standard radiation source is obtained through theoretical analysis, the measurement temperature of the dual-wavelength temperature measurement system is obtained according to a dual-wavelength temperature measurement formula, and the error between the measurement temperature and the actual temperature of the halogen lamp is analyzed, so that the calibration of the dual-wavelength temperature measurement system is completed. According to the calibration method, the ...

SVG optimization control method and device based on voltage closed loop

The invention discloses an SVG optimization control method and device based on a voltage closed loop. The SVG optimization control method comprises the steps that an SVG is put into operation on the bus side of a new energy station line; during the steady-state operation period of the system, the SVG is put into operation, and the AVC substation is accessed to keep the current steady-state control mode unchanged; during the system fault transient operation period, the SVG voltage keeps continuous operation without off-line operation under a preset value, and a constant voltage mode is adopted to realize voltage closed-loop control; according to a relation between a preset voltage steady-state reference value, a preset voltage hysteresis upper limit value, a preset voltage hysteresis lower limit value, a preset voltage steady-state upper limit value and a preset voltage steady-state lower limit value of voltage closed-loop control and an actually-measured voltage value, control strategy ...

PHYSICAL LAYER STEGANOGRAPHIC TRANSMISSION METHOD AND SYSTEM

Disclosed are a physical layer steganographic transmission method and system, wherein same are applied to the technical field of communications. In the method of the present embodiment, when a steganographic signal is transmitted each time, an upper limit of a steganographic capacity is determined after a signal sending end performs channel coding on a carrier signal, and a random sequence is generated for indicating an embedding position of a first hidden signal in the coded carrier signal; then, the first hidden signal is embedded into the carrier signal according to the generated sequence so as to obtain the steganographic signal, wherein the length of the first hidden signal cannot be greater than the upper limit of the steganographic capacity; and finally, the sending end sets a transmission identifier in the steganographic signal and modulates same and sends same out. Thus, in the present embodiment, a sending end dynamically and self-adaptively adjusts the maximal length of a first ...

CLOSED-LOOP TYPE PHASE SYNCHRONIZATION METHOD BASED ON CUMULATIVE POSITIVE FEEDBACK AND DISTRIBUTED COMMUNICATION SYSTEM

The present invention relates to the technical field of distributed communications, and in particular to a closed-loop type phase synchronization method based on cumulative positive feedback and a distributed communication system. In the present invention, starting from a second time slot, a positive feedback counter accumulates the number of times the total strength of signals received by a target node is greater than the optimum received signal strength in a current time slot; and when the number of times reaches a pre-set value, a step length of phase disturbance is automatically increased in the next time slot, and the pre-set value is increased, so as to improve a convergence speed at an early convergence stage.

MIMO RADAR SYSTEM AND PHASE SYNCHRONIZATION METHOD THEREFOR AT DYNAMIC TARGET END

The present invention relates to the technical field of radars, in particular to an MIMO radar system and a phase synchronization method therefor at a dynamic target end. In the present invention, two time slots are used as one cycle to estimate frequency and phase parameters of a signal, and the estimated parameters are utilized to construct new frequency and phase parameters, and ideal phase synchronization at a dynamic target end is realized by means of a radar feedback array transmitting a feedback signal. Compared with the existing source end and receiving end phase synchronization techniques, the number of required time slots is greatly reduced when the number of radars is relatively large; in addition, the requirements of the proposed phase synchronization techniques for a network topology structure of a radar system are not high, and multiple iterations are not required to reach the effect of state convergence, thereby improving a convergence speed, greatly reducing the power consumption ...

Catamaran

The invention discloses a catamaran which comprises two ship bodies and a connecting platform located between the two ship bodies, wherein the connecting platform is a bottomless platform with an inner cavity, and an extraction opening and a first communication opening are formed in the connecting platform; an air extraction valve and an air extraction device are arranged at the air extraction opening, and the air extraction device is used for vacuumizing the inner cavity of the connecting platform; the first communicating opening is located in the side wall, which is connected with the ship body, of the connecting platform, and a communicating valve is arranged at the first communicating opening; and a water inlet is formed in the side, which is away from the connecting platform, of the ship body, a power generation structure is arranged in the ship body, one end of the power generation structure is communicated with the external environment, the other end of the power generation structure ...

Wheel cleaning and dust collecting treatment system

The invention relates to a wheel cleaning and dust collecting treatment system which comprises a dust removal module and a dust suction module. The dust removal module comprises a plurality of dust removal modules, each dust removal module comprises a dust removal device and a collection box, the dust removal devices are connected with the collection boxes, specifically, the dust removal devices are a plurality of rollers which are provided with brushes and are installed side by side, at least one end of each collection box is provided with a connecting part and a corresponding opening, and the connecting parts are connected with the collection boxes. The dust collecting pipe is connected with a dust collecting pipe of a dust collecting module; the dust collection module further comprises a dust collector used for adsorbing dirt in the collection box, specifically, the dust collector comprises a first dust collector body and a second dust collector body, the first dust collector body is ...

Multi-language translation word list initialization method and device based on graph network

The invention discloses a multi-language translation vocabulary initialization method and device based on a graph network, and the method comprises the steps: constructing a vocabulary mapping heterogeneous graph between each language and a core language according to a bilingual dictionary corresponding to each language, and a decomposition composition relation of words and lexical elements; according to the heterogeneous graph neural network and a comparative learning algorithm, lexical element mapping relations between different language word lists and the core language word lists are learned on the word list mapping heterogeneous graph; and initializing the lexical elements of the word list of the core language in the multi-language machine translation task by utilizing the word list of the BERT model, and mapping other languages to the word list space of the BERT model according to the lexical element mapping relationship to complete the initialization of all the lexical elements in ...

GRAVITY GRADIENT MEASUREMENT METHOD AND APPARATUS

A gravity gradient measurement method and apparatus. In the gravity gradient measurement apparatus, a turntable (3) rotates horizontally around an earth-vertical axis, a vacuum layer (7) is disposed on the turntable (3), the vacuum layer (7) and the turntable (3) define a first chamber, a first three-axis accelerometer (1) and a second three-axis accelerometer (2) are located in the first chamber, the first three-axis accelerometer (1) and the second three-axis accelerometer (2) are symmetrical to each other on the x-axis with respect to the origin of coordinates, distances from the first three-axis accelerometer (1) and the second three-axis accelerometer (2) to the origin of coordinates are both R, the first three-axis accelerometer (1) and the second three-axis accelerometer (2) are symmetrical to each other on the z-axis with respect to the origin of coordinates, a distance, on the z-axis, between the first three-axis accelerometer (1) and the second three-axis accelerometer (2) is ...

METHOD AND SYSTEM FOR DETERMINING SUSPICIOUS SPAM RANGE

The embodiments of the present invention disclose a method and a system for determining the suspicious spam range. The method includes: intercepting characters with a first preset number from every received electronic-mail; counting the repeated times of every character string in all intercepted character strings; determining the character string as the suspicious spam feature according to the descending order of the repeated times ranking a front of the second preset number place; regarding an electronic-mail with said features as the suspicious spam. The invention can predetermine the suspicious spam range, thereby the efficiency of judging whether the mail is a spam or not can be improved.

ELECTRONIC EXPANSION VALVE AND CONTROL METHOD THEREOF

An electronic expansion valve of an air-conditioning system, comprising a valve body (1) and an expansion valve controller; the valve body (1) comprises a refrigerant channel, a valve pin (14), and a stepping motor; the stepping motor controls the movement of the valve pin (14) to adjust the size of the opening of the refrigerant channel; the expansion valve controller outputs different control signals according to different operation conditions of the electronic expansion valve; inputting different current to the stepping motor so as to drive the stepping motor to rotate; and controlling the movement of the valve pin (14) to adjust the size of the refrigerant channel. The electronic expansion valve employs different current to drive a stepping motor according to different operation conditions, thus reducing system energy consumption, overcoming abnormal fault of the motor, and extending the service life of the electronic expansion valve.

Platform section integrated station construction method based on variable-diameter shield method

The invention provides a platform section integrated station construction method based on a variable-diameter shield method. The method comprises the steps that an open-cut shield starting well is constructed; the two large-diameter shield tunneling machines are descended to a well for starting, and a platform layer tunnel is tunneled; before the shield arrives, the joint of the variable-diameter tunnel is subjected to stratum reinforcement in advance; the conversion from the large-diameter shield tunneling machine to the small-diameter shield tunneling machine is completed in the tunnel; a small-diameter shield tunneling machine starts, tunneling of adjacent shield interval tunnels is completed, and the shield shaft arrives at the next station and is hoisted out; the starting end of the jacking pipe is reinforced, and a pipe jacking machine of a station hall layer starts; a transverse channel is built through an underground excavation method and used for connecting the platform layer tunnels ...

METHOD AND SYSTEM FOR SEEKING OPTIMAL RELAY POSITION BASED ON TIMING MECHANISM

The present invention is applicable to the technical field of wireless communications. Provided is a method for seeking a global optimal relay position based on a timing mechanism. The steps thereof comprise: A, a mobile relay receiving a test signal sent from a source end, amplifying same and forwarding same to a destination end; B, the destination end calculating communication performance according to the received signal, performing comparison, generating single-bit information according to a comparison result, and feeding back same to the mobile relay; C, the mobile relay calculating a position of the next moment according to the single-bit information which is fed back, moving to this position, and then receiving the test signal sent from the source end, amplifying same and forwarding same to the destination end; and repeating steps B and C until a global optimal relay position is found. By means of the present invention, an optimal relay position can be found within a global range ...

METHOD AND SYSTEM FOR SEEKING OPTIMAL RELAY POSITION OF MOBILE RELAY BASED ON FIXED STEP LENGTH

Disclosed are a method and system for seeking an optimal relay position of a mobile relay based on a fixed step length. The method comprises: a mobile relay receiving a test signal sent by a source end, amplifying same, and then forwarding same to a destination end; the destination end calculating communication performance according to the amplified test signal, comparing same with communication performance of a saved optimal known position, and then generating bit information to feed back same to the mobile relay; and the mobile relay moving to the next relay position according to the bit information and a pre-set fixed step length, and re-executing the step of receiving the test signal sent by the source end until an optimal relay position is determined. By means of the method, the performance of relay communication can be improved, without the need to obtain position information about a source end and a destination end, multiple antennas are not required, only the destination end is ...

Wafer holding device

The wafer holding device provided by the invention comprises a chuck, a plurality of fixed clamping pins, a plurality of movable clamping pins and a rotating shaft, the plurality of fixed clamping pins are fixedly arranged on the chuck, the plurality of movable clamping pins are movably arranged on the chuck, and the rotating shaft is configured to drive the chuck to rotate; wherein the fixed clamping pins and the movable clamping pins are distributed on the circumference with the center of the chuck as the circle center, and the circle center limited by the fixed clamping pins is located on the central axis of the chuck. In the invention, the plurality of fixed clamping pins are arranged to ensure the centering precision of the wafer, and the requirement on the action consistency of the plurality of movable clamping pins is reduced, so that the design, manufacturing and maintenance costs of the movable clamping pins are reduced.

GOSSIP ALGORITHM BASED MULTIPLE TARGET DOA ESTIMATING SYSTEM AND ESTIMATING METHOD IN DISTRIBUTED NETWORK

The present invention relates to a gossip algorithm based multiple target DOA estimating method in a distributed network. The present invention, on the basis of the required number of iteration cycles for a DOA estimated value calculated on the basis of a DOA estimated value calculation formula, uses a gossip algorithm to continuously update the signal components for DOA estimation until the ideal state for full information sharing is reached, and, after executing all the iteration cycles, can obtain a good DOA estimate. The present invention does not require a matrix inversion method, and can implement information sharing and DOA value estimation in a distributed network.

PAPER ANTI-COUNTERFEITING METHOD AND SYSTEM

Disclosed is a paper anti-counterfeiting method, wherein same is applied to the technical field of communications, and comprises: a card reader acquiring identification information from an electronic tag, and generating authentication information and sending same to the electronic tag; the electronic tag generating response information according to the received authentication information, and returning same to the card reader; and the card reader carrying out anti-counterfeiting authentication on the paper by using the received response information. Further disclosed is a paper anti-counterfeiting system. By means of the method and the system, the security of anti-counterfeiting paper and the difficulty in counterfeiting anti-counterfeiting paper can be increased.

MULTI-LEAD ELECTROCARDIOGRAM SIGNAL CLASSIFICATION METHOD AND SYSTEM

Disclosed is a multi-lead electrocardiogram signal classification method and system, comprising: S1, processing multi-lead electrocardiogram signals by means of a multi-branch convolution residual neural network to extract signal characteristics of each of the multi-lead electrocardiogram signals; S2, merging the extracted signal characteristics of the multi-lead electrocardiogram signals; and S3, classifying the merged multi-lead electrocardiogram signals on the basis of a Softmax function. The present invention also relates to a multi-lead electrocardiogram signal classification system. In the multi-lead electrocardiogram signal classification method and system of the present invention, a multi-branch convolution residual neural network is used to capture synchronous electrocardiogram signal characteristics of different leads before the signals are merged, and finally classified, thereby increasing the accuracy of classifying multi-lead electrocardiogram signals. Different merging methods ...

Gear precision detection tool

The gear precision detection tool provided by the invention comprises a base, a mounting part which is arranged on the base and is used for mounting a gear to be detected, and a tooth thickness lower limit detection station and a tooth thickness upper limit detection station which are used for mounting a standard gear. The detection tool is provided with the tooth thickness upper limit detection station and the tooth thickness lower limit detection station, and when the to-be-detected gear and the standard gear do not interfere with each other at the tooth thickness upper limit detection station and interfere with each other at the tooth thickness lower limit detection station, the tooth thickness of the to-be-detected gear is determined to be between the tooth thickness lower limit and the tooth thickness upper limit. Therefore, an operator can simply and quickly judge whether the tooth thickness of the to-be-detected gear is qualified or not by judging whether the to-be-detected gear ...

Mine gas power generation flue gas waste heat gradient utilization method and device

The invention belongs to the technical field of mine gas power generation waste heat utilization, and relates to a mine gas power generation flue gas waste heat gradient utilization method and device. The mine gas power generation flue gas waste heat gradient utilization device comprises a primary heat exchange device, a primary closed type circulating water system, a secondary heat exchange device, a tap water supply device, a conversion heating device, a secondary closed type circulating water system, a mine auxiliary wellhead heating device and a heat source adjusting transfer station. The mine gas power generation flue gas waste heat gradient utilization method comprises the steps of first-stage heat exchange, second-stage heat exchange, conversion heat increasing and the like. By means of the method or device, the waste heat in the high-temperature flue gas of the mine gas generator set can be efficiently recycled, the recycled heat energy adopts the heat energy recycling mode that ...

Device and method for measuring ash content of cigar tobacco leaves

The invention discloses a cigar tobacco ash content measuring device and method, and the device comprises a shading box which is provided with a box door capable of being opened and closed; the ash placing plate is rotatably mounted at the inner bottom of the shading box; the image acquisition system comprises a high-angle shooting camera and a side shooting camera, the high-angle shooting camera is installed at the inner top of the shading box and located over the ash containing plate, and the side shooting camera is installed on the inner side face of the shading box and right faces the ash containing plate; the illumination system is annular multi-gear adjustment illumination equipment, is mounted at the inner top of the shading box and is positioned on the periphery of the high-angle shooting camera; and the image processing system is connected with the image acquisition system. Compared with a traditional combustibility determination method, the method provided by the invention has ...

Foundation pit construction risk assessment method and system based on digital twin simulation platform

The invention discloses a foundation pit construction risk assessment method and system based on a digital twin simulation platform. The method comprises the steps that a BIM real scene model is established; establishing a corresponding foundation pit construction full life cycle three-dimensional prediction model; establishing an actual measurement model of foundation pit construction; the established prediction model and the established actual measurement model are compared in the established BIM real scene model, corresponding parameters are adjusted and predicted values are inverted and corrected by adopting an AI algorithm in combination with the field surrounding environment, geological conditions, construction schemes and project general situations, so that the error optimization with the actual measurement result is achieved, the prediction model is adjusted, and the prediction accuracy is improved. Calculating a predicted value of next construction; the adjusted prediction model ...

METHOD AND DEVICE FOR DIVERSITY COMBINING

The present invention adapts to the field of wireless mobile communication, and provides a method and device for diversity combining. The method includes the following steps that: step A (S101), distinguishing at least one branch signal from received signals by a receiver; step B (S102), selecting the branch signals with corresponding performance index meeting the preset selection rules according to an input threshold and an output threshold of the preset performance index; step C (S103), combining all the selected branch signals. In the embodiments of the present invention, a method for diversity combining is provided by selecting the branch signals with corresponding performance index meeting the preset selection rules according to the input threshold and the output threshold of the preset performance index and combining all the selected branch signals. The method can reduce power consumption of the receiver, and especially adapts to the situation that the receiver is a wireless mobile ...

SEARCH METHOD AND SEARCH SYSTEM FOR OPTIMAL COMMUNICATION POSITION OF MULTIPLE MOBILE RELAYS

The present invention is applicable to the field of wireless communications. Provided is a search method for an optimal communication position of multiple mobile relays, and the steps thereof comprise: A, various mobile relays receiving a training sequence sent from a source end at any position of a fixed track, and transmitting same to a destination end; B, the destination end receiving independent fading signals from the various mobile relays, performing maximal-ratio combination, and then generating single-bit information according to a combination result in each time slot, and broadcasting and feeding back same to all the mobile relays; and C, the various mobile relays recording current position information, performing a calculation according to the single-bit information, shifting a position according to a calculation result, and returning to step A to finally determine an optimal relay communication position. In the search method provided in the present invention, an airborne single ...

IMPROVED CELLULOSE AND PREPARATION METHOD AND APPLICATION THEREFOR

Improved cellulose and a preparation method and an application therefor. The structural formula of the improved cellulose is shown in formula (I), formula (II), or formula (III): wherein n is 2-7; the improved cellulose is obtained by means of modifying and substituting the cellulose. The cellulose is substituted by long chain compounds having terminal amino groups, such that the modified cellulose has long chain space and terminal amino groups, and can be used as a matrix for solid phase polypeptide synthesis (SPOT), increasing the reaction activity and reaction space, reducing the difficulty of polypeptide synthesis, better implementing SPOT solid phase polypeptide synthesis, being suitable for synthesis by an automatic synthesiser, and having a high yield and low costs.

RADIO FREQUENCY SHIELDING BOX

Disclosed is a radio frequency shielding box, comprising: a box body (10) installed on a printed circuit board (PCB) and forming, together with the PCB, a closed space in which components on the PCB are located; and a dielectric plate (20) installed in the box body and located above the components on the PCB.

SCROLLING TOOLBAR DISPLAY AND CONTROL METHOD

The present invention relates to a scrolling toolbar display and control method, comprising the following steps: (1) receiving a screen touch control signal for displaying a scrolling toolbar; (2) determining a to-be-selected object according to the screen touch control signal; (3) according to the to-be-selected object, selecting a function button corresponding to the to-be-selected object, and calculating the summation of the display width of each selected function button to obtain a total display width value; and (4) comparing the total display width value with a preset value, and if the total display width value is less than or equal to the preset value, then displaying the scrolling toolbar, and at the same time displaying in the scrolling toolbar all the selected function buttons and a close button for closing the scrolling toolbar; and if the total display width value is greater than the preset value, then displaying the scrolling toolbar, and at the same time displaying in the scrolling ...

Furnace tube for thin film deposition, thin film deposition method and processing equipment

The invention discloses a furnace tube for thin film deposition. The furnace tube comprises a process tube; the wafer boat is arranged in the process pipe, and the wafer boat is provided with a plurality of layers of supporting pieces in the length direction of the process pipe; the air supply pipe is arranged in the process pipe, and multiple layers of air supply holes are formed in the air supply pipe in the length direction of the process pipe; a plurality of layers of exhaust holes are formed in the side wall of the process pipe in the length direction; wherein the distribution area of the air supply holes is gradually reduced from top to bottom in the length direction of the side wall of the process pipe, and the distribution area of the exhaust holes is gradually reduced from top to bottom in the length direction of the side wall of the process pipe. By arranging the multiple layers of air supply holes and the multiple layers of exhaust holes, the distribution area of the air supply ...

OPEN-TYPE CONDUCTION COOLING NUCLEAR MAGNETIC RESONANCE SUPERCONDUCTING MAGNET SYSTEM

An open-type conduction cooling nuclear magnetic resonance superconducting magnet system. Inner support rods (9) are disposed between an upper and a lower superconducting coil (6, 11). Magnetic heat exchangers (8) are respectively welded on an upper and a lower coil frame (7, 12). The upper and lower superconducting coils (6, 11) respectively adopt a high-pressure helium gas vessel (4) as an outer support and stress support frame. The high-pressure helium gas vessels (4) and the upper and lower superconducting coils (6, 11) are installed in a low-temperature vacuum vessel (2), and the upper and lower superconducting coils (6, 11) are longitudinally and symmetrically arranged in the high-pressure helium gas vessels (4). An upper coil stress support structure (13) supports the upper superconducting coil (6), and a lower coil stress support structure (17) supports the lower superconducting coil (11). The upper and lower coil stress support structures are annularly arranged on an outer wall ...

ELECTRONIC EXPANSION VALVE AND STEPPING MOTOR COIL DEVICE THEREOF

A stepping motor coil device for the electronic expansion valve of an air-conditioner is provided. The device comprises coil windings (1) and a driving circuit board (2). A driving interface (21) which is connected with the coil windings (1) and a circuit board bus interface (22) are arranged on the driving circuit board (2). The air-conditioner includes a main control board. A main control board bus interface which is connected with the circuit board bus interface (22) is arranged on the main control board. The structure design of the device simplifies the structure of the main control board of the electronic expansion valve and reduces wire harnesses connected with the main control board.

Non-isolated alternating current sampling double-power calculation single-phase electric energy meter and method

The invention belongs to the technical field of electronic circuits, and discloses a non-isolated alternating current sampling double-power calculation single-phase electric energy meter and method, and the method comprises the steps: S1, enabling a live wire current sampling circuit to collect the live wire current of alternating current by taking a zero line as a reference ground based on the characteristics of the alternating current, the null line current sampling circuit collects the null line current of the alternating current by taking a live wire as a reference ground; based on the alternating current characteristics, the dynamic voltage sampling circuit circularly collects the zero line voltage of the alternating current through the first sampling loop, and the second sampling loop collects the live line voltage of the alternating current. S2, the first data processing module calculates a first path of power of the alternating current based on the received zero line current and ...

TRANSMISSION WAVE BEAM TRACKING METHOD, SYSTEM AND TRANSMISSION TERMINAL DEVICE

A transmission wave beam tracking method, system and transmission terminal device. The method includes: determining whether the transmission azimuth needs to be updated by using a dynamic azimuth iterative step length by counting the times of the continuously received power control feedback information which requires to increase the transmission power, or retrieving a cell to re-determine the current transmission azimuth. The method effectively tracks a user angle in a static channel or in a dynamic channel and improves the correctness of tracking the user angle in the transmission terminal of a wireless communication system.

MIMO RADAR SYSTEM AND TARGET END PHASE SYNCHRONIZATION METHOD THEREOF

A MIMO radar system and a target end phase synchronization method thereof. Complete signal phase synchronization of a target end is achieved through feedback retransmission of signals in three time slots and estimation of frequency and phase parameters of signals received in the first two time slots to construct a feedback signal of the next time slot. No matter how many radar array elements exist in the MIMO radar system, only three non-overlapping time slots are needed to realize phase synchronization of a single target end.

PACLITAXEL-LIPID-POLYSACCHARIDE DUAL-TYPE CONJUGATE, PREPARATION METHOD THEREFOR AND USE THEREOF

Provided are a paclitaxel-lipid-polysaccharide dual-type conjugate related to general formula I, a preparation method therefor, a use thereof, and a pharmaceutical composition comprising same. The present invention also relates to a series of intermediates used for the preparation of a paclitaxel-lipid-polysaccharide dual-type conjugate, a preparation method therefor, and a use thereof as drug delivery carrier.

SUPERCONDUCTING MAGNET SYSTEM FOR HIGH-POWER MICROWAVE SOURCE FOCUS AND ELECTRON CYCLOTRON DEVICE

A superconducting magnet system for a high-power microwave source focus and electron cyclotron device includes a chiller (11), a vacuum chamber (12), a supporting rod (13), a heat radiation shield (16), a low-temperature system and a superconducting magnet (15). The superconducting magnet (15) includes an inner superconducting main coil (1), an outer superconducting main coil (2), two end compensating coils (3), a regulating coil (4) and a central regulating coil (5). Said coils are wound by Nb3Sn/Cu superconducting wire. The solid nitrogen formed by the chiller (11) and high-pressure nitrogen enables the superconducting magnet (15) to operate off line. The closed loop formed by the superconducting magnet (15) and a superconducting switch (18) makes a magnet field stable and not disturbed by outer electromagnetism. The superconducting magnet system can provide high-stable magnet field with special space distribution.

GOSSIP ALGORITHM-BASED SINGLE-TARGET DOA ESTIMATING SYSTEM AND ESTIMATING METHOD IN DISTRIBUTED NETWORK

The present invention relates to a gossip algorithm-based single-target DOA estimating system and estimating method in a distributed network. The inversion operation of said system and method utilizes a noise diagonal matrix to substitute for an autocorrelation matrix of the received signals of all nodes, thereby avoiding the method in traditional algorithms of the received signals of all nodes requiring centralised processing, and thus providing a good estimate of single target DOA values.

METHOD AND SYSTEM FOR SEEKING OPTIMAL RELAY POSITION BASED ON CONTINUOUS NEGATIVE FEEDBACK VARIABLE STEP LENGTH

Provided are a method and system for seeking an optimal relay position based on a continuous negative feedback variable step length. The method comprises: a mobile relay amplifying a received signal sent by a source end and forwarding same to a destination end, so that the destination end compares communication performance strength of the test signal with communication performance strength of a saved known optimal relay position and feeds the comparison result back to the mobile relay by using bit information, and the mobile relay calculating a random disturbance step length and a correction factor according to the bit information, thus determining the next relay position, moving to the next relay position, and re-executing the step of receiving the test signal which is sent by the source end and is used to test communication performance until an optimal relay position is determined. By means of the method, the performance of relay communication can be improved, without the need to obtain ...

STUDIO SHARING METHOD AND SYSTEM THEREOF

Provided are a studio sharing method and a system thereof. The studio sharing method comprises the steps of: an initiator establishing a sharing studio, and sending invitation information about the sharing studio through a network; a receiver which receives the invitation information joining the sharing studio by establishing a network connection; the initiator sending a studio document and a play control instruction on the studio document to the receiver which has joined the sharing studio; and the receiver receiving the studio document and the play control instruction, and executing a play control operation on the studio document at the receiver locally according to the play control instruction. The studio sharing method and the system thereof provided in the present invention can simultaneously play a demonstration document among a plurality of mobile devices.

CONCEALED WIRELESS COMMUNICATION PHYSICAL-LAYER SLOPE AUTHENTICATION METHOD AND APPARATUS

Disclosed by the embodiments of the present invention are a concealed wireless communication physical-layer slope authentication method and apparatus, said method comprising: using a pre-agreed key to divide a to-be-sent signal into (n+1) packets, wherein n is a positive integer; if the difference between the amplitude value of a conventional signal and the amplitude value of a tag signal does not meet requirements, then determining the power parameter adjustment factor of a number n of packets, said conventional signal being an authentication signal received by a receiving terminal and said tag signal being a non-authentication signal received by the receiving terminal; according to the power parameter adjustment factor of the n packets as well as the energy-limited conditions of the power of the to-be-sent signal, determining the power parameter adjustment factor of the remaining packets; for each packet, performing power adjustment on the packet according to the power parameter adjustment ...

Double-station poly V-belt conveying device

The invention discloses a double-station poly V-belt conveying device which comprises a sliding base mechanism, a first glue supply cutting mechanism and a second glue supply cutting mechanism, the first glue supply cutting mechanism and the second glue supply cutting mechanism are arranged on the sliding base mechanism, and the first glue supply cutting mechanism and the second glue supply cutting mechanism are symmetrically distributed. A first conveying mechanism and a second conveying mechanism are arranged on one side of the first glue supplying and cutting mechanism and one side of the second glue supplying and cutting mechanism respectively; a cutter assembly is arranged at one end of the first adhesive supply cutting mechanism, a lower cutter is arranged on the cutter assembly, an upper cutter is arranged on one side of the lower cutter, first punching conveying belts are arranged on one side of the lower cutter, and a first air suction groove is formed between the first punching ...

Advanced mathematics intelligent test paper composition method based on bidirectional detail table

The invention discloses an advanced mathematics intelligent test paper composition method based on a bidirectional detail table, and relates to the technical field of higher education. The method comprises the following steps: establishing a bidirectional detail table, and determining the proportion of examination question scores according to the coincidence of knowledge points and investigation ability; each item listed in the longitudinal direction of the bidirectional detail table is content to be examined, namely knowledge points, and each item listed in the transverse direction is ability to be examined. According to the method, course knowledge content and teaching cognition target requirements are clearly defined and described through an AI course two-way detail table, the AI course two-way detail table is a course teaching standard blueprint, and it is guaranteed that the course content is comprehensive and accurate in the aspect of knowledge content and is properly distributed ...

SECURE WIRELESS COMMUNICATION PHYSICAL LAYER SLOPE AUTHENTICATION METHOD AND APPARATUS

Disclosed are a secure wireless communication physical layer slope authentication method and apparatus, wherein the method comprises: a transmitting end device using a predetermined key to divide signals to be sent into multiple groups; acquiring a preset equivocation threshold; according to the equivocation threshold, determining a power parameter adjustment factor of each of the groups; with regard to each of the groups, carrying out power adjustment on a signal of the group according to the power parameter adjustment factor of the group; sending the signals, which have undergone power adjustment, to be sent; after a receiving end device receives the signals, grouping the signals according to the predetermined key, and calculating the power of each of the groups; determining an examination statistic quantity according to the power of each of the groups, and determining whether the examination statistic quantity is greater than or equal to a preset statistic quantity threshold; and if ...

Communication optimization method and device of deep learning model, and storage medium

The embodiment of the invention provides a communication optimization method and device for a deep learning model, and a storage medium, and the method comprises the steps: segmenting the deep learning model, and obtaining a first sub-model located under a first communication node and a second sub-model located under a second communication node; under the first communication node, calculating a sparsification threshold value of the forward data according to the sparsification proportion parameter and the forward data transmitted by the first sub-model, and compressing the forward data according to the sparsification threshold value and the sparsification proportion parameter to obtain intermediate data; under the second communication node, decompressing the intermediate data according to the quantization parameter to obtain backward data; and transmitting the backward data to the second sub-model for training. According to the embodiment of the invention, the two communication nodes where ...

DRAWING DEVICE AND DRAWING METHOD

The present invention relates to an image-drawing device, comprising: a drawing module having location parameters, for use in receiving drawing and, according to each input pen stroke, correspondingly generating each stroke to be determined, the stroke to be determined being a point or a line; a storage module for storing current strokes formed of strokes to be determined; an END command output module, used to receive a user operation to send a command to stop drawing; a control module, connected to the drawing module, the storage module and the END command output module respectively, and used to determine whether each stroke to be determined can be added to the storage module to form the current strokes and determine whether the current strokes of the storage module form an independent image. The present invention determines, by setting a preset condition, whether an independent figure is completed. The user does not need to perform any operation for completion, thereby avoiding any interruption ...

Nanoparticles for targeted therapy of thrombotic diseases as well as preparation method and application of nanoparticles

The invention provides nanoparticles for targeting thrombus as well as a preparation method and application of the nanoparticles, and belongs to the technical field of medicines. Under the alkaline condition, EGCG (epigallocatechin gallate) and ICG (indocyanine green) are catalyzed by MnCl2 to form nanoparticles, then a synthesized compound sulfydryl-polyethylene glycol-cyclopeptide (HS-PEG-cRGD) is introduced, centrifugal collection and freeze drying are performed, and the nanoparticles for targeting thrombus are obtained. According to the targeted drug delivery system prepared by the invention, the cyclic polypeptide cRGD is specifically combined with a receptor GPIIb/IIIa (glycoprotein receptor IIb/IIIa) on the surface of an activated platelet, so that the drug is selectively gathered at a thrombus part, the targeting property of the drug is improved, the photo-thermal thrombolysis effect of the nano-drug is enhanced, and the targeted drug delivery system has a wide application prospect ...

Floor drain mounting system and mounting method for ultra-thin cover plate

The invention discloses a floor drain mounting system and mounting method for an ultra-thin cover plate. The floor drain mounting system comprises a combined floor drain of the ultra-thin cover plate, gravel concrete, a waterproof layer and a ceramic tile layer, wherein the combined floor drain is provided with a water collecting part, a drainage part and a water sealing part, and the gravel concrete, the waterproof layer and the ceramic tile layer are distributed from bottom to top. The water collecting part comprises a water collecting plate and a water collecting frame; the water collecting plate comprises two inclined surfaces with low center line positions and high side positions; the drainage part comprises an accommodating frame which is provided with an upper edge plate at the periphery and is connected with a sewer pipe; the water collecting frame is arranged in the accommodating frame in a height-adjustable manner; the water seal part comprises a bent pipe body with a transverse ...

SELF-SHIELD OPEN MAGNETIC RESONANCE IMAGING SUPERCONDUCTING MAGNET

A self-shield open magnetic resonance imaging superconducting magnet comprises five pairs of coils, i.e. shim coils (1), the first main magnetic coils (2), the second main magnetic field coils (3), the third main magnetic field coils (4), and shielding coils (5), and the five pairs of coils are symmetric about the center. The shim coils (1) are arranged closest to the center point, and the first main magnetic field coils (2), the second main magnetic field coils (3), the third main magnetic field coils (4), and the shielding coils (5) are arranged in sequence outside. The first main magnetic field coils (2) are connected with reverse current, and the second main magnetic field coils (3) and the third main magnetic field coils (4) are connected with positive current for providing the main magnetic field strength. The shim coils (1) are connected with positive current for compensating the magnetic field in the central region to improve the uniformity of the magnetic field in the ball region ...

SIGMA-DELTA MODULATOR

The present invention is suitable for use in the technical field of signal processing and provides a sigma-delta modulator, comprising a primary modulation unit, used for converting an inputted analog signal to a primary digital signal; the primary digital signal comprising quantization noise and multi-bit DAC nonlinear noise; a secondary modulation unit, cascaded with the primary modulation unit and used for converting the quantization noise in the primary digital signal and the multi-bit DAC nonlinear noise to a secondary signal, and feeding said secondary digital signal back to said primary modulation unit; a noise shaping unit, connected to the primary modulation unit and the secondary modulation unit and used for cancellation of the quantization noise in the primary digital signal and the multi-bit DAC nonlinear noise, to obtain a noise-cancelled digital signal and output same. The present invention uses a combined configuration of inter-stage feedback and dual quantization to offset ...

HIGH RESOLUTION DOA ESTIMATION METHOD AND SYSTEM

The present invention applies to the technical field of MIMO radars. A high resolution DOA estimation method and system. The method comprises the following steps: all receive antennas receiving transmitted signals reflected by target sources (A); scanning a received signal of each receive antenna by using each transmitted signal (B); separately multiplying the scanned signal by the transmitted signal to obtain a phase corresponding to each peak signal in the received signal of each receive antenna (C); constructing a virtual received signal according to the obtained phase and the transmitted signal to serve as an obtained virtual extended signal (D); and forming a new received signal by the virtual extended signal and the original received signal, and calculating a covariance and a Capon beamforming coefficient of the new received signal, so as to complete DOA estimation (E). By means of the method, the estimation accuracy is improved and the number of target sources that can be estimated ...

Staggered clamping mechanism for steam turbine overhaul

The invention relates to the technical field of steam turbine overhaul, and discloses a staggered clamping mechanism for steam turbine overhaul, which comprises a top shell, a staggered gear set and a clamping assembly, a cavity is formed in the inner wall of the top shell, and the top shell comprises a first cross rod set arranged in the cavity; the second cross rod set and the third cross rod set are symmetrically arranged on the two sides of the first cross rod set, and the second cross rod set and the third cross rod set are the same in structure; the second transverse rod set comprises a gear supporting rod fixedly connected with the top shell and a vertical supporting rod arranged in the direction perpendicular to the extending direction of the gear supporting rod. Through interaction of the staggered gear sets, the stability of the rotor is improved when the rotor is replaced, the whole device is more stable in stress in operation due to the staggered arrangement mode, and shaking ...

METHOD FOR CONSTRUCTING SUBBAND SELF-ADAPTIVE FILTER

The invention is applicable in MACROBUTTON MACROBUTTON signal disposal field, and a method for constructing a subband self-adaptive filter is provided. The method comprises: carrying out two-stage decomposition and self-adaptive filtering on the input signal; carrying out two-stage subband decomposition on the desired signal; and updating the filter adjusting coefficient subjected to self-adaptive filtering at the next time according to the current filter adjusting coefficients subjected to the self-adaptive filtering performed on the input signal and the obtained difference between the output signal subjected to the self-adaptive filtering and the desired signal subjected to the two-stage decomposition. In the embodiment of the invention, a method for constructing subband self-adaptive filter is realized by updating the filter adjusting coefficient subjected to self-adaptive filtering at the next time according to the current filter adjusting coefficients subjected to the self-adaptive ...

METHOD AND SYSTEM FOR SEEKING OPTIMAL RELAY POSITION BASED ON REVERSE COMPENSATION MECHANISM

The present invention is applicable to the technical field of wireless communications. Provided is a method for seeking an optimal relay position of a mobile relay based on a reverse compensation mechanism. The steps thereof comprise: A, a mobile relay, at a current position of a fixed track, receiving a test signal sent from a source end, amplifying same and forwarding same to a destination end; B, the destination end calculating communication performance according to the received signal, and then generating single-bit information according to a calculation result and feeding back same to the mobile relay; C, the mobile relay calculating a position of the next moment according to the single-bit information which is fed back, and moving to the position of the next moment; and repeatedly executing steps A-C until an optimal relay position is finally determined. The seeking method and seeking system provided in the present invention can improve relay communication performance without the ...

METHOD AND DEVICE FOR INSERTING OR DELETING CELLS, ROWS OR COLUMNS IN SPREADSHEET

Disclosed is a method for inserting or deleting cells, rows or columns in a spreadsheet, comprising: obtaining touch and click information on a touchscreen; determining target cells or target rows or columns; obtaining moving information about a touch point on the touchscreen; according to preset operation type judgment logic, judging whether the operation to be performed is an insertion operation or a deletion operation; and determining the locations and number of cells, rows or columns to be inserted or deleted, and performing the insertion or deletion operation. In addition, also disclosed is a device for inserting or deleting cells, rows or columns in a spreadsheet, comprising: an information acquisition module, a target determination module, an operation type judgment module and an operation execution module. The method and device in the present invention can simplify the operation in a spreadsheet in a gesture identification manner, to quickly and visually insert or delete cells, ...