充气床（有护栏）

Control method and device of lean-burn engine and engine system

The invention discloses a control method and device of a lean-burn engine and an engine system. The control method of the lean-burn engine comprises the steps that the current torque and the target torque are obtained; when the current torque is smaller than the target torque, the average effective pressure and the excess air coefficient are obtained; and when the average effective pressure is within the first pressure range and the excess air coefficient is within the first coefficient range, the ignition angle is adjusted, and the air content and the combustible matter content in the air cylinder are increased, so that the current torque is increased to the target torque. By the adoption of the technical scheme, the current torque is increased, meanwhile, large heat efficiency can be guaranteed, and the situation that in the process of increasing the air content and the combustible matter content in the air cylinder, the combustion gravity center changes, and the ignition angle is large ...

Detection and defense method and system for CROSSFIRE TCP traffic attack

The invention provides a detection and defense method and system for CROSSFIRE TCP traffic attack, and relates to the technical field of network security, and the specific scheme is as follows: calculating a static index and a dynamic index of a network physical topology, and selecting a network bottleneck according to the static index and the dynamic index; generating and deploying a network virtual topology according to the static index and the dynamic index of the network bottleneck, and dynamically controlling the flow introduced into the virtual topology; detecting a suspicious detection flow, introducing the suspicious detection flow into a network virtual topology, and performing active defense by issuing a discarded flow table; according to the method, under a software defined network architecture, a honeypot thought is used for reference, the advantages of the SDN are fully utilized, Crossfire attacks and TCP protocol characteristics are grasped, the attacks are prevented, detected ...

Battery composite pole piece and preparation method thereof

The invention relates to the technical field of secondary battery pole piece preparation, and discloses a battery composite pole piece preparation method, which comprises: S10, selecting a porous copper foil for a battery, and coating a solid electrolyte on one side surface of the porous copper foil to form a solid electrolyte layer; s20, coating or plating a porous aluminum foil on the surface of the solid electrolyte layer; s30, coating the surface of the porous aluminum foil with a positive electrode material to form a positive electrode coating; coating the surface of the other side of the porous copper foil with a negative electrode material to form a negative electrode coating; and finally obtaining the battery composite pole piece. The through type integrated battery composite pole piece is formed by sequentially overlapping the negative electrode coating, the porous copper foil, the solid electrolyte layer, the porous aluminum foil and the positive electrode coating, and the positive ...

包装盒（好事发生）

蓝牙耳机盒

Method for treating wastewater containing heavy metal ions

The invention belongs to the field of wastewater treatment, and particularly relates to a heavy metal ion-containing wastewater treatment method which comprises the following steps: (1) measuring the content of heavy metal ions in wastewater; (2) adding phytic acid into the wastewater, wherein the molar ratio of phytic acid to metal ions is (1: 3)-(1: 7); (3) adding strong base, and fully stirring to adjust the pH value of the wastewater to be about 7; and (4) standing and precipitating the wastewater for 1-4 days. According to the method, the precipitate is formed while the alkali is added, the wastewater is directly discharged after the precipitate is filtered, that is, heavy metal ions are removed through the precipitate and the pH value of the wastewater reaches the standard is synchronously completed, and compared with a traditional method which needs a final step of adjusting the pH independently, the process is simpler.

DATA PACKET FORWARDING METHOD AND APPARATUS

A data packet forwarding method and apparatus, applied to a wireless local area network comprising a wireless access point controller, a wireless access point, and a wireless station. The method comprises: obtaining and parsing a data packet; determining whether a destination MAC address of a layer-2 head portion of the data packet obtained though parsing is a local MAC address of the wireless access point controller; and performing layer-2 forwarding if the destination MAC address is not the local MAC address, and performing layer-3 forwarding if the destination MAC address is the local MAC address. The present invention implements layer-2 and layer-3 forwarding simultaneously at the same interface, has relatively high flexibility, and can deal with a changeable wireless local area network topology environment.

Engine, control method thereof and vehicle

The invention discloses an engine, a control method thereof and a vehicle. The engine comprises a pre-combustion chamber, the pre-combustion chamber comprises a first gas storage tank and a second gas storage tank, and gas stored in the first gas storage tank and gas stored in the second gas storage tank are different; the electromagnetic on-off valve is connected with a first opening in the side face of the pre-combustion chamber; the first end of the gas ejector is connected with the first gas storage tank through a first pipeline; the first end of the gas mixer is connected with the second end of the gas ejector, and the second end of the gas mixer is connected with the electromagnetic on-off valve; and the main combustion chamber is connected with the second opening in the side face of the pre-combustion chamber. According to the pre-combustion chamber, the technical problems that carbon is easily deposited in the pre-combustion chamber and more residual waste gas is generated in the ...

Hyaluronic acid sampling inspection device and use method thereof

The invention provides a hyaluronic acid sampling inspection device and a use method thereof, and belongs to the technical field of sampling inspection devices. Comprising an extraction assembly, a transmission assembly, a connection assembly, a detection assembly and a stirring assembly, and the extraction assembly is used for layered extraction of hyaluronic acid during sampling inspection; the transmission assembly is used for classified transmission and collection transmission after extraction of the extraction assembly, and the transmission assembly is detachably connected to the extraction assembly; the connecting assembly is used for detachable connection and one-way conveying from the extracting assembly to the conveying assembly, and the connecting assembly is connected to the bottom of the extracting assembly in a transmissible mode. Compared with the prior art, the method has the advantages that hyaluronic acid of different layers is extracted at a time and is separately stored ...

V-shaped non-uniform ignition engine

The invention belongs to the technical field of engines, and discloses a V-shaped non-uniform ignition engine which comprises a left column of air cylinders, a right column of air cylinders and a crankshaft, the V angle between the center line of the left column of air cylinders and the center line of the right column of air cylinders is alpha which is equal to 90 degrees, a plurality of crank pins are arranged on the crankshaft, and the crank pins are connected with the left column of air cylinders and the right column of air cylinders. The staggered corner between the connecting lines from the axis projection points of every two adjacent crank pins to the center line projection point of the main journal of the crankshaft is theta, the sum of the staggered corner and the V angle is smaller than the conventional ignition advance angle by 120 degrees, and by optimizing the design of the staggered corner of the crankshaft, the strength of the crankshaft is improved under the condition that ...

Hydraulic engineering foundation bearing capacity detection device and method

The invention relates to the technical field of hydraulic engineering detection, discloses a hydraulic engineering foundation bearing capacity detection device and method, and solves the problem that automatic release and reset steps are tedious. The hydraulic engineering foundation bearing capacity detection device comprises a moving seat, a plurality of rollers are arranged at the bottom of the moving seat, and a mounting seat is arranged above the moving seat; a rectangular ring is fixedly connected to the bottom of the mounting seat, a heavy hammer is arranged in the rectangular ring, the heavy hammer and the rectangular ring are in sliding connection through a guide unit, the bottom end of the heavy hammer penetrates through the rectangular ring, a first connecting plate is fixedly connected to the top of the heavy hammer, a supporting column is fixedly connected to the top of the first connecting plate, and a movable seat is arranged on one side of the first connecting plate; the ...

SDN (Software Defined Network) data center network load balancing method and system for elephant flow

The invention provides an SDN (Software Defined Network) data center network load balancing method and system for elephant flow, and relates to the technical field of networks, and the specific scheme comprises the following steps: detecting and sensing the topological structure of an SDN data center network in real time, detecting the congestion degree of a link based on a constructed network topological graph, and dynamically adjusting a sampling period according to the congestion degree; sampling is carried out according to the sampling period, and elephant flow identification is carried out on an obtained sample through a two-stage double-threshold method; designing a reward function according to a minimum packet loss rate, a maximum throughput and a higher path selection probability, calculating an optimal path for the identified elephant flow in real time, and re-routing to the optimal path; according to the invention, an intelligent dynamic load balancing method can be provided for ...

Connector moving contact system with guiding function

The invention discloses a connector moving contact system with a guiding function, which comprises a moving contact, and is characterized in that a roller bracket is rotatably connected with the moving contact, one end of the roller bracket is provided with a guiding roller, and the other end of the roller bracket is provided with a roller position adjusting groove hole; a position linkage groove hole is formed in the position, corresponding to the guide roller position adjusting groove hole, of the moving contact, a guide shaft is arranged at the position, corresponding to the roller position adjusting groove hole and the position linkage groove hole, of one end of a guide block, and the guide shaft can slide in the position linkage groove hole. When the guide shaft slides in the position linkage slotted hole, the guide shaft can be linked with the roller support to rotate relative to the moving contact through the roller position adjusting slotted hole. Through the guide mechanism, part ...

Vibration correction method and system for gas detection device

Methods, devices, and systems are provided for improving a gas detection device. An example gas detection device may include at least one imaging sensor; and a controller component, wherein the controller component is configured to: obtain image data comprising at least a first frame and a second frame; identifying a number of matching features between the first frame and the second frame; and estimating a transformation between the first frame and the second frame in a case where the number of matching features satisfies a predetermined threshold number of matching features; and performing one or more vibration correction operations.

Variable-length connecting rod, engine and vehicle

The invention discloses a variable-length connecting rod, an engine and a vehicle, and belongs to the technical field of engines, the variable-length connecting rod is used for connecting a piston and a crankshaft of the engine, and comprises a connecting rod body and an eccentric shaft sleeve; a second connecting hole is formed in the other end of the connecting rod body; an eccentric shaft sleeve is rotatably arranged in the second connecting hole, the eccentric shaft sleeve can rotate around the central axis of the second connecting hole so that the position of the central point of the eccentric shaft sleeve can be changed, and the eccentric shaft sleeve is configured to be connected with the crankshaft; the distance between the center point of the eccentric shaft sleeve and the center point of the first connecting hole is the center distance of the variable-length connecting rod, and the center distance of the variable-length connecting rod can be changed along with rotation of the ...

Balance shaft system and vehicle with same

The invention provides a balance shaft system and a vehicle with the same. The balance shaft system comprises a balance shaft, at least one needle bearing is arranged on the peripheral face of the balance shaft, and the balance shaft is connected with a cylinder body of the engine through the needle bearing; at least part of the front balance block is arranged at the first end of the balance shaft in a sleeving manner; the balance shaft chain wheel is meshed with a timing chain of the engine, and the balance shaft chain wheel is connected with at least part of the front balance block; and at least part of the rear balance block is arranged at the second end of the balance shaft in a sleeving mode, and the gravity center of the rear balance block and the gravity center of the front balance block are symmetrically arranged by 180 degrees relative to the geometric center of the balance shaft. According to the technical scheme, the balance shaft is connected with the cylinder body of the engine ...

Moving contact position adjusting mechanism of low-abrasion moving connector

The invention discloses a moving contact position adjusting mechanism of a low-abrasion moving connector, which is characterized by comprising a sliding block (4), a pair of moving contacts (1, 2, 3, 4, 5, 6, 7, 8, 9, 10) and a movable connector (4), the pair of moving contacts (1, 1 ') are rotatably arranged on the sliding block (4), the pair of moving contacts (1, 1') are provided with position linkage slotted holes (102, 102 '), the guide block (6) is provided with guide shafts (601, 601') corresponding to the position linkage slotted holes (102, 102 '), the guide shafts (601, 601') are arranged in the position linkage slotted holes (102, 102 '), and the guide shafts (601, 601') of the guide block (6) can slide back and forth in the position linkage slotted holes (102, 102 '). According to the adjusting mechanism for the contact system of the movable connector, the abrasion of the movable connector in the inserting and separating process of the movable connector and the static connector ...

Low-abrasion movable connector with guiding function

The invention discloses a low-wear movable connector with a guiding function, which comprises a pair of movable contacts, and is characterized in that the movable connector is provided with a guiding mechanism and a movable contact position adjusting mechanism; the guide mechanism can guide the static connector in the process of being plugged with the pair of moving contacts so as to prevent the static connector and the pair of moving contacts from collision damage, and the moving contact position adjusting mechanism can adjust the position of the static connector when the pair of moving contacts are plugged with or separated from the static connector. And the pair of moving contacts are correspondingly contacted with or separated from the static connector, so that the aim of reducing the abrasion between the pair of moving contacts and the static connector is fulfilled. The static plug-in and the moving contact are prevented from being directly collided and contacted through the guide ...

Low-friction crankshaft, engine and crankshaft shaft system design method

The invention discloses a low-friction crankshaft, an engine and a crankshaft shaft system design method, and belongs to the technical field of crankshafts. The low-friction crankshaft comprises a crankshaft end, a main journal, a connecting rod journal, a crank arm, a main bearing bush and a connecting rod bearing bush, the main journal and the connecting rod journal each comprise a first annular area, a central annular area and a second annular area, and the first annular areas and the second annular areas are located on the two sides of the central annular areas correspondingly; the first annular area and/or the second annular area are/is provided with a first reticulate pattern structure, the central annular area is provided with a second reticulate pattern structure, the groove depth of the first reticulate pattern structure is larger than that of the second reticulate pattern structure, and the main bearing bush is arranged in the central annular area of the main bearing bush. The ...

SMART CAMPUS SYSTEM

Disclosed is a smart campus system comprising a campus management subsystem (1) and a campus teaching subsystem (2). The campus management subsystem comprises a cloud platform management workstation (101); an integrated server (102); a cloud platform server (103); a video monitoring system server (104); and a video monitoring storage disk array (106). The campus teaching subsystem (2) comprises a 24-hour self-service reading room (109); a plurality of teacher working cloud terminals (14); a plurality of electronic blackboards (108); and a plurality of student tablet PCs (111). Each of the units of the campus management subsystem (1) and the campus teaching subsystem (2) are mutually connected via a school local area network (107). The system can comprehensively and effectively integrate various teaching activities, scientific research projects, system management, campus resources and various types of application systems of a school, thus improving the teaching quality and the efficiency ...

HTTP (Hyper Text Transport Protocol) message rule matching method, system, equipment and medium

The invention discloses an HTTP (Hyper Text Transport Protocol) message rule matching method, system and device and a medium, and the method comprises the steps: analyzing an obtained HTTP message, and obtaining an analyzed HTTP message; a configuration file used for HTTP message rule matching is read and analyzed, and a user-defined rule set is generated; the Head part is extracted, and extraction information is obtained; performing character string matching on the body part according to a user-defined rule set based on an improved multimode matching algorithm of an AC automaton; recording the occurrence frequency and position of the matched character string in the body part information in each matching rule; determining a preliminary matching result according to the extraction information and a multimode matching result; performing position matching operation on the preliminary matching result according to the position information to obtain an accurate matching result, namely an HTTP ...

Super capacitor module temperature detection mechanism

The utility model discloses a super capacitor module group temperature detection mechanism comprising a base plate, a plurality of capacitor module groups are installed at the upper end of the base plate, the peripheries of the plurality of capacitor module groups abut against a temperature sensing line together, a fixing rod is fixed at the left side of the upper end of the base plate, and one end of the temperature sensing line is fixedly connected to the fixing rod. The temperature of the super capacitor module can be detected in batches through the temperature sensing lines, the temperature sensing lines can be extended through the cooperation of the telescoping mechanisms, the super capacitor module can be detected in a larger number, the problem that individual detection cannot be carried out during batch detection can be prevented through the buckle mechanism, and the detection efficiency is improved. The batch detection effect is ensured, so that the detection time is effectively ...

Fuel cell tail exhaust silencer and fuel cell vehicle

The invention provides a tail exhaust silencer of a fuel cell, belongs to the technical field of fuel cells, and solves the problems of poor integration level, non-ideal silencing effect and poor safety of the existing tail exhaust silencer. The device comprises a water segregator, a first silencing cavity, a second silencing cavity, a third silencing cavity and a fourth silencing cavity which are communicated in sequence. One side of the water segregator is provided with a wet gas inlet capable of introducing electric pile tail gas, the other side of the water segregator is provided with a dry gas outlet connected with the first silencing cavity, and the bottom of the water segregator is provided with a water outlet. A bypass throttle valve is integrated in the first silencing cavity. And the second silencing cavity is integrated with a hydrogen pressure release valve interface. And the third silencing cavity is integrated with a PACK ventilation interface. And the fourth silencing cavity ...

METHOD AND DEVICE FOR FLOW ANALYSIS

A method and device for flow analysis, comprising: classifying flow information on a local device according to a preset classification strategy: permitted flow information, denied flow information and unknown flow information; according to the flow field of the flow information, determining corresponding information flows in the permitted flow information, the denied flow information and the unknown flow information; aggregating in memory each information flow for a preset duration according to a first preset period to obtain an analysis result for each information flow and provide feedback for a user. An embodiment of the present invention enables a user to analyze a network problem instantly by classifying information flow acquisition packets on a local device according to classification rules, and determining corresponding information flows, aggregating each information flow in memory and obtaining corresponding analysis results. In addition, real-time analysis of original packets enables ...

Power prediction method and power prediction device of wind turbine generator and electronic device

The invention provides a power prediction method and device of a wind turbine generator and an electronic device. The method comprises the steps of obtaining power data of a plurality of wind turbine generators before a prediction moment, and performing second-order difference processing on the power data of the plurality of wind turbine generators to obtain a plurality of sample data, part of the plurality of sample data being test data, and the other part being training data; inputting the test data into the long and short term memory artificial neural network model in sequence to obtain predicted power data of a plurality of wind turbine generators, inputting the predicted power data of each wind turbine generator and the corresponding test data into a discriminator model, and judging whether the simulated predicted power data of the wind turbine generators are correct or not; and under the condition that the loss function of the discriminator model converges, determining the predicted ...

MULTI-FUNCTIONAL ELECTRONIC BLACKBOARD

Disclosed is a multi-functional electronic blackboard, comprising a rectangular blackboard main body (1), a material object display table (2) and a camera (3). The camera (3) is arranged at the top of an outer side of the blackboard main body (1), and the material object display table (2) is retractably arranged opposite the camera (3) at the bottom of the blackboard main body (1). An infrared touch control display screen (10) connected to the camera (3) is provided in the left half region of the blackboard main body (1), and the right half region of the blackboard main body (1) is configured as a writable panel (13). The material object display table (2) comprises a modular frame (20), an exhibition table (21), a load-bearing connecting shaft (22) and an axially moving sliding block (23); and the modular frame (20) is embedded in the blackboard main body (1), the axially moving sliding block (23) is slidably arranged on a lower frame of the modular frame (20), and a pair of limit sleeves ...

Low-abrasion movable connector

The invention discloses a low-wear movable connector which comprises a pair of movable contacts, an elastic piece is connected between the pair of movable contacts, and the elastic piece continuously provides driving force for the pair of movable contacts to tend to rotate in opposite directions, so that clamping force is provided for the pair of movable contacts in the contact process with a static connector. The circuit breaker is characterized in that a moving contact position adjusting mechanism is arranged on the moving connector, so that the pair of moving contacts can be correspondingly contacted with or separated from the static connector only when the pair of moving contacts are inserted into or separated from the static connector, and the contact process of the pair of moving contacts and the static connector is shortened; the purpose of reducing abrasion between the pair of moving contacts and the static connector is achieved. According to the movable connector assembly, the ...

Method for reducing birefringence of polymer optical fiber

The invention discloses a method for reducing the birefringence of a polymer optical fiber, which belongs to the technical field of polymer optical fibers, and comprises the following steps of: placing a PMMA (polymethyl methacrylate) optical fiber in a device for carbon dioxide fluid treatment, and treating by using high-pressure carbon dioxide fluid to reduce the orientation degree of a polymer, the polymer optical fiber with low birefringence is prepared; the polymer optical fiber is a polymer optical fiber in which a polymethyl methacrylate resin is used as a core material. Through high-pressure carbon dioxide fluid treatment, the birefringence of the PMMA optical fiber can be simply, conveniently and effectively reduced.

Wind power prediction method, wind power prediction device and electronic device

The invention provides a wind power prediction method, a wind power prediction device and an electronic device.The method comprises the steps that multiple pieces of similar wind power data are obtained, and the similar wind power data are wind power data, within the same preset range as key influence factor data of to-be-measured wind power data, in historical wind power data; the to-be-measured wind power data is wind power data in a preset time period of a to-be-measured date, the historical wind power data is wind power data in a preset time period before the to-be-measured date, the wind power data is output power of a wind turbine generator, and part of the similar wind power data is training sample data; the other part is test sample data; inputting the test sample data into the regional convolutional neural network model, and extracting features of the test sample data; and inputting the features of the test sample data into the support vector regression model to obtain predicted ...

Pre-combustion chamber ignition device, control method of pre-combustion chamber ignition device and vehicle

The embodiment of the invention discloses a pre-combustion chamber ignition device, a control method of the pre-combustion chamber ignition device and a vehicle. The pre-combustion chamber ignition device comprises a spark plug assembly which comprises a spark plug center electrode, a center electrode insulator and spark plug side electrodes located on the peripheral side of the spark plug center electrode. The pre-combustion chamber electrode is arranged on the outer side of the first end of the pre-combustion chamber; the action mechanism is used for driving the spark plug center electrode to move between a first position and a second position; when the spark plug center electrode is located at the first position, the spark plug center electrode partially penetrates through the bottom spraying hole in the first end of the pre-combustion chamber. When the spark plug center electrode is located at the second position, the spark plug center electrode is far away from the first end of the ...

Telescopic low-abrasion movable connector

The invention discloses a telescopic low-wear movable connector, which comprises a shell and a pair of movable contacts, and is characterized in that a guide bracket is arranged in the shell and can be connected with the shell in a sliding manner, a sliding block is connected with the guide bracket in a relative sliding manner, a guide block is fixedly arranged in the guide bracket, and the sliding block is connected with the guide bracket in a sliding manner. The wiring board is fixedly installed on the shell, and the pair of moving contacts is rotatably installed on the sliding block. And under the condition that the shell and the wiring board are kept static, the guide bracket can be driven by external force so as to drive the guide shaft on the guide block to link the pair of moving contacts and the corresponding static contacts for contact and separation. According to the movable connector assembly, the movable contact position locking and unlocking adjusting mechanism is additionally ...

Multi-dimensional data analysis-based bid surrounding and bid stringing detection method and system

The invention discloses a multi-dimensional data analysis-based bidding and confusion detection method and system, and the method comprises the following steps: 1, obtaining authors of bidding documents, and checking whether the authors of bidding documents are the same or not; 2, converting the bidding file into pictures, recognizing character content through character detection and character recognition technologies, extracting the character content in each picture, storing and merging the character content into complete bidding character content, comparing the bidding template file, and removing the part, which is the same as the template bidding document, in the characters of the bidding file; and 3, calculating the text similarity between the bidding files. According to the multi-dimensional data analysis-based bidding and confusion detection method and system, the bidding files are uniformly converted into pictures, recognition is carried out, and character information in the bidding ...

Cuckoo filter design method and system for reducing false positive rate

The invention discloses a cuckoo filter design method and system for reducing false positive rate, and relates to the technical field of cuckoo filters. The design method comprises the following steps that the cuckoo filter composed of a plurality of barrels is constructed, each barrel is composed of a plurality of grooves, and fingerprints of elements are stored in the grooves; the cuckoo filter is uniformly divided into an upper part and a lower part, the upper part of the cuckoo filter is called F1, and the lower part of the cuckoo filter is called F2; setting two candidate buckets p1 and p2; enabling a candidate bucket p1 corresponding to any element to fall in F1 and a corresponding candidate bucket p2 to fall in F2 through a modulus and XOR method for the number of buckets in each part of filter; and searching the to-be-searched element by using a cuckoo filter, wherein the search is successful if the fingerprint in the candidate bucket p1 or p2 is the same as the fingerprint of the ...

Wildcard character mode matching method and system based on one-from-three transmission protocol

The invention provides a wildcard character mode matching method and system based on a one-out-of-three transmission protocol, the wildcard character safety mode matching problem under a semi-honest opponent model is solved by adopting the one-out-of-three transmission protocol and a secret sharing scheme, and low-efficiency public key cryptography operation caused by the protocol is reduced by utilizing a transmission expansion technology. Therefore, the protocol efficiency is improved. Compared with a security protocol based on a homomorphic encryption technology, the security protocol has lower calculation complexity, and the calculation overhead of an online stage can be reduced by adopting a pre-calculation OT technology.

Switch cabinet drawer seat interlocking device

A switch cabinet drawer seat interlocking device is characterized in that a handle cover (902) is rotatably installed in a notch of a folding crank installation groove (901a), the folding crank installation groove (901a) can be opened or closed in the rotating process of the handle cover (902), one end of a transverse locking plate (903) is correspondingly linked with a locking groove hole (902a) in the handle cover (902), the other end of the transverse locking plate (903) is connected with a longitudinal locking plate (904), and the longitudinal locking plate (904) is connected with the handle cover (902). The longitudinal locking piece (904) can drive the transverse locking piece (903) to move back and forth in the horizontal direction in the up-down movement process, and the transverse locking piece (903) can stretch into or be pulled out of the locking groove hole (902a) from a through hole of a folding crank installation groove (901a) in the back-and-forth movement process in the ...

External multi -media of outer facade of bridge

... 本实用新型公开了一种桥梁外立面外挂多媒体，属于桥梁设施领域，包括外挂在桥梁外立面上，且上下排布和/或左右排布的若干个点光源装置，所述点光源装置包括模板以及通过卡箍固定在模板上，且呈矩阵排列的点光源；所述模板包括面板以及位于面板内侧四周的模板框，所述模板框壁上设置有若干个均匀分布的连接孔。本实用新型多媒体实现了大范围拼接、造型多样、颜色质感可随环境改变，不仅具有结构简单，安装使用方便，降低使用成本，适应性好，安全可靠等优点，还可以成为一个信息发布的媒体，从而带来相应的经济效益。 ...

Low-abrasion movable connector contact system adjusting mechanism

The invention discloses a low-wear moving connector contact system adjusting mechanism, which is characterized by comprising a sliding block (4), a pair of moving contacts (1, 2, 3, 4) and a sliding block (5), the pair of moving contacts (1, 1 ') are rotatably arranged on the sliding block (4), the pair of moving contacts (1, 1') are provided with position linkage groove holes (102, 102 '), the sliding block (4) is provided with position guide limiting groove holes (401, 401') at positions corresponding to the position linkage groove holes (102, 102 '), the guide block (6) is provided with guide shafts (601, 601') at positions corresponding to the position guide limiting groove holes (401, 401 ') and the position linkage groove holes (102, 102'), and the guide shafts (601, 601 ') are arranged on the sliding block (4). 601 ') are arranged in the position guide limiting slotted holes (401, 401') and the position linkage slotted holes (102, 102 '). According to the adjusting mechanism for ...

Three-party heterogeneous security computing acceleration method and system, medium and equipment

The invention provides a three-party heterogeneous security computing acceleration method and system, a medium and equipment, and relates to the technical field of multi-party security computation.The method comprises the steps that the requirement of a user for inputting data is obtained, and a heterogeneous security computing architecture based on a CPU and an FPGA is constructed; generating a confusion circuit corresponding to the security calculation task according to the obtained user demand, and accelerating the calculation of the confusion circuit according to the heterogeneous security calculation architecture based on the CPU and the FPGA; specifically, a proxy computing party is added to compute a generated obfuscation circuit, and a lightweight FPGA heterogeneous computing architecture is deployed at the proxy computing party to accelerate computation of the obfuscation circuit. Therefore, the generation stage and the calculation stage of the confusion circuit are accelerated ...

Pre-combustion chamber combustion system, engine and vehicle

The invention provides a pre-combustion chamber combustion system, an engine and a vehicle. The pre-combustion chamber combustion system comprises a pre-combustion chamber body, a circular truncated cone protruding structure is arranged in the middle of the inner wall of the bottom of the pre-combustion chamber body, the circular truncated cone protruding structure protrudes towards the top of the pre-combustion chamber body, a central bottom hole is formed in the middle of the circular truncated cone protruding structure, and the central bottom hole is formed in the middle of the circular truncated cone protruding structure in the direction from the top of the pre-combustion chamber body to the bottom of the pre-combustion chamber body. The diameter of the central bottom hole is gradually increased, so that an inner necking structure is formed in the position, corresponding to the circular truncated cone protruding structure, of the outer wall of the bottom of the pre-combustion chamber ...

Vibration reduction gear pair and engine with same

The invention provides a vibration reduction gear pair and an engine with the vibration reduction gear pair. The vibration reduction gear pair comprises a metal gear; the compound gear is meshed with the metal gear, the compound gear comprises metal teeth and rubber teeth, the metal teeth are connected with the rubber teeth, the rubber teeth extend in the tooth width direction of the metal teeth, and the tooth thickness of the rubber teeth is larger than that of the metal teeth, so that when the vibration reduction gear pair begins to work, the metal teeth are meshed with the compound gear; and after the rubber teeth are in contact with the metal gear and are deformed and meshed, the metal teeth are meshed with the metal gear. According to the technical scheme, when the vibration reduction gear pair begins to work, the rubber teeth make contact with the metal gear to be subjected to deformation meshing, then the metal teeth are meshed with the metal gear, and due to the elastic effect of ...

Military notebook display screen fixing device used for being placed on table top

The invention relates to a military notebook computer display screen fixing device used for being placed on a table top. The military notebook computer display screen fixing device comprises a base riveting piece, a left fixing frame riveting piece, a right fixing frame riveting piece, two positioning pin assemblies, a screen support riveting piece, a screen fixing plate, an overturning pressing plate, a screen fixing screw, a screen support fixing screw, a first fixing block, a second fixing block and a U-shaped clamping block. When the display screen fixing device is in a use state, a screen support riveting piece is in plug-in positioning fit with a positioning hole in the first fixing block through a positioning pressing rivet screw, and is fixed through a screen support fixing screw which is locked in a through hole of the first fixing block, a front pressing rivet nut column and a threaded hole of the second fixing block in a penetrating manner; the screen bracket riveting piece is ...

High-activity pollen dissolving agent suitable for pollination of unmanned aerial vehicle and application of high-activity pollen dissolving agent in walnut pollination

The invention provides a high-activity pollen dissolving agent suitable for pollination of an unmanned aerial vehicle and application of the high-activity pollen dissolving agent in walnut pollination, and belongs to the technical field of walnut pollination. The invention provides a high-activity pollen dissolving agent suitable for pollination of an unmanned aerial vehicle. The high-activity pollen dissolving agent is prepared from the following raw materials in parts by weight: 2-2.5 parts of agar, 1-2 parts of xanthan gum, 800-1000 parts of sucrose, 1-5 parts of boric acid, 5-10 parts of calcium nitrate and 15000-15500 parts of water. By adopting the high-activity pollen dissolving agent, the pollen collection and storage method and the unmanned aerial vehicle spray pollination method provided by the invention, the fruit setting rate of a single plant is increased by 18%-30%, the empty fruit rate is reduced by 10%, and the average yield per mu is increased by 30%.

Spacecraft structure suitable for vertical layout of rigid flat plate

The invention provides a spacecraft structure suitable for vertical layout of a rigid flat plate in the technical field of spaceflight. The spacecraft structure comprises a rigid flat plate spacecraft, a force transmission block, a V-shaped clamping block and a wrapping tape. The force transmission block is connected with the rigid plate spacecraft, and the force transmission block is arranged on the rigid plate spacecraft in a pressing manner through a wrapping tape; a connecting ring is fixedly arranged on the rigid plate spacecraft; the V-shaped clamping block is fixedly arranged on the force transmission block, and the force transmission block is arranged on the V-shaped clamping block in a limiting manner; and the outer sides of the V-shaped clamping blocks are fixedly provided with wrapping belts. By arranging the force transmission block, the V-shaped clamping block and the belting connection design as a novel spacecraft connection form, a conventional common main force bearing column ...

Portable optical cable heating test device

The invention belongs to the technical field of detection devices for nuclear power stations, and particularly relates to a portable optical cable heating test device. The power supply comprises a device which comprises a control panel, a heating box and an outer box body, the control panel and the heating box are connected and arranged on the outer box body, and the control panel is used for controlling the heating test process of the optical cable; during testing, the testing ring can be placed on the heating disc in the heating box and led out from the notch of the heating box, and an accurate constant-temperature environment is provided for testing an optical cable, so that a user can test the optical cable at each constant testing temperature to obtain more accurate testing data.

System, method, and computer program product for detection limit determination for hyperspectral imaging

Systems, methods, and computer program products for thermal contrast determination are provided. An exemplary imaging system includes a first infrared (IR) imaging device that generates first IR image data of a field of view of the first IR imaging device, and a computing device coupled to the first IR imaging device. The computing device receives temperature probe data indicative of an external environment of the imaging system from a temperature probe and receives the first IR image data from the first IR imaging device. The computing device determines background temperature data based on the first IR image data; determining gas temperature data based on the probe temperature data; and determining a thermal contrast for each pixel based on a comparison between the background temperature data and the gas temperature data. The computing device further determines a detection limit for each pixel based on the thermal contrast.

System, method, and computer program product for determining diffusive emissions

Systems, methods, and computer program products are provided for determining diffusive emissions. An exemplary imaging system includes a first infrared (IR) imaging device configured to generate first IR image data of a field of view of the first IR imaging device, the first IR image data including one or more data entries associated with diffusive emissions from an emission source. The system further includes a computing device operably connected with the first IR imaging device and configured to: receive the first IR image data from the first IR imaging device; generating spectral absorption data based on the first IR image data; and determining an amount of gas associated with the diffusive emissions based on the spectral absorption data. The computing device also determines a leakage rate and a leakage duration of the diffusive emission based on the determined gas amount; and determining a total loss of emissions based on the determined leak rate and leak duration.

Drawer unit of low-voltage switch cabinet

A low-voltage switch cabinet drawer unit is characterized in that the low-voltage switch cabinet drawer unit comprises a drawer shell (1), and a device mounting plate (2) is arranged in an inner frame of the drawer shell (1) and can slide back and forth; an internal electrical device (3), a primary plug-in (4) and a secondary plug-in (5) are arranged on the device mounting plate (2) and can slide back and forth in an inner frame of the drawer shell (1) together with the device mounting plate (2) to realize switching of three position states of connection, test and isolation of the drawer unit; the device mounting plate is arranged in the drawer unit, and the switching of three position states of connection, test and isolation of the drawer unit is realized by utilizing the relative movement of the device mounting plate and the drawer unit shell, so that the protection level is improved, and the safe use performance of the low-voltage switch cabinet is further improved.

Electrode active material for supercapacitor and preparation method thereof

The invention relates to the field of supercapacitors, in particular to an electrode active material for a supercapacitor and a preparation method of the electrode active material, and aims to solve the problems that an existing graphene electrode material is poor in dispersity and easy to agglomerate, and serious lamellar stacking occurs in the reduction process of graphene. The main bracket of the electrode active material is graphene, and the graphene material has large specific surface area, excellent conductivity and mechanical property and good flexibility and chemical stability, so that the graphene can be prevented from serious sheet layer stacking in the reduction process after being connected with a ferrocene group, more reaction active sites are retained, and the conductivity and the mechanical property of the electrode active material are improved. According to the present invention, the graphene is introduced, the smooth electron transmission path can be provided, the electron ...

Polymer optical fiber simultaneously doped with fluorescent dye and light stabilizer and preparation method thereof

The invention discloses a polymer optical fiber simultaneously doped with a fluorescent dye and a light stabilizer and a preparation method of the polymer optical fiber, and belongs to the technical field of polymer optical fibers. The polymer optical fiber simultaneously doped with the fluorescent dye and the light stabilizer is prepared according to the following steps: placing a polymethyl methacrylate (PMMA) optical fiber in a high-pressure fluid device, adding the fluorescent dye, the light stabilizer and a cosolvent, when the temperature reaches 18-20 DEG C, injecting high-pressure carbon dioxide fluid until the pressure is increased to 8-12 MPa, and carrying out heat preservation for 2-3 hours, so as to obtain the polymer optical fiber simultaneously doped with the fluorescent dye and the light stabilizer. And processing to obtain the polymer optical fiber simultaneously doped with the fluorescent dye and the light stabilizer. According to the preparation method, the light stability ...

Device for exploring change of sodium hyaluronate lubricant between liquid state and jelly state

The invention discloses a device for exploring the change of a sodium hyaluronate lubricant between a liquid state and a jelly state, and belongs to the field of lubricant detection.The device comprises a detection base, a servo motor is arranged at the top of the detection base, a driving rotary disc is arranged on an output shaft of the servo motor, and an eccentric column is arranged at the top of the driving rotary disc; a coating mechanism is arranged on the outer side of the eccentric column, and a detection mechanism is arranged on the outer side of the eccentric column. When the detection column is located in the detection rubber sleeve to rotate and slide, a lubricant is uniformly filled between the detection column and the detection rubber sleeve, the friction force applied to the interior of the detection rubber sleeve is reflected on the tension sensor through the tension detection rod and the tension, and meanwhile, the detection sleeve is heated or cooled through the temperature ...

Cuckoo filter based on Feistel structure and data processing method thereof

The invention discloses a cuckoo filter based on a Feistel structure and a data processing method thereof, and relates to the technical field of cuckoo filters. The cuckoo filter comprises a plurality of barrels, each barrel comprises a plurality of grooves, a mark position matrix composed of mark positions is arranged, and the grooves and the mark positions are in one-to-one correspondence. Fingerprints are stored in the grooves, and candidate buckets of elements corresponding to the fingerprints are identified by the flag bit matrix; and calculating a corresponding label according to the to-be-operated element, and calculating a fingerprint and a candidate bucket by using a Feistel structure according to the label. In addition to setting a flag bit matrix in a cuckoo filter construction process, a calculation method of fingerprints and candidate buckets is improved based on a Feistel structure, and insertion, search and deletion algorithms are optimized. The values of the candidate buckets ...

Computer thermal characteristic coupling correction evaluation method

The invention relates to a computer thermal characteristic coupling correction evaluation method, which is realized under the condition that a box body and a module are split, and comprises the following steps of: 1, firstly, respectively acquiring thermal resistance data of each box body end coupling surface and each module device; wherein the thermal resistance of each module device comprises a module device thermal resistance and a thermal resistance between coupling surfaces at two ends of the module; 2, performing global thermal resistance updating on the combination condition of each module and the box body, and calculating heat flow distribution data of the coupling surfaces of the modules and the box body under the condition that the box body and the single module are combined; 3, calculating temperature rise distribution data of all coupling surfaces according to a homogeneity principle of a linear time-invariant system; and 4, according to the superposition principle of a linear ...

Systems, methods, and computer program products for multi-model emissions determination

Systems, methods, and computer program products for determining multi-model emissions are provided. An exemplary imaging system includes an infrared (IR) imaging device configured to generate second IR image data of a first field of view of the IR imaging device at a second time, and a computing device operably connected with the IR imaging device. The computing device receives second IR image data of the first field of view from the IR imaging device and accesses a first detection model associated with the first field of view of the IR imaging device. The first detection model is generated based on first IR image data of a first field of view of the IR imaging device generated at a first time. The computing device also generates first spectral absorption data based on the second IR image data and the first detection model for detecting the diffusive emissions.

HYDROGEN-BASED BATTERY

Disclosed herein are batteries and methods of making batteries. The batteries disclosed herein generally comprise a cathode, an electrolyte capable of conducting protons and/or hydronium ions, and an anode comprising a material capable of absorbing protons and/or hydronium ions, wherein (i) the cathode is in contact with a cathode substance, or (ii) the electrolyte comprises a reduced cathode substance, or (iii) the cathode is in contact with a cathode substance and the electrolyte comprises a reduced cathode substance, and wherein the cathode substance is an oxide of one or more metals or an oxide of a halide.

Privacy protection machine learning reasoning acceleration method and system

The invention discloses a privacy protection machine learning reasoning acceleration method and system, and the method comprises the steps: receiving to-be-reasoned data in a machine learning process through an SGX, judging whether the to-be-reasoned data is linear or non-linear, and carrying out the non-linear operation in the SGX if the to-be-reasoned data is non-linear; if the linear data part is linear, the SGX encrypts the linear data part and sends the encrypted linear data part to the FPGA; the FPGA carries out decryption processing on the encrypted linear data part, and carries out linear operation on the decrypted linear data part; after the linear operation is finished, the FPGA encrypts a linear operation result and returns an encrypted ciphertext to the SGX; and after the SGX decrypts the received ciphertext, nonlinear operation is carried out on the decrypted data, so that a reasoning process of machine learning is completed, and processing of a subsequent linear data part ...

Electromagnetic positioning and tracking system for medical navigation

The invention relates to an electromagnetic positioning and tracking system for medical navigation. The electromagnetic positioning and tracking system comprises a magnetic field generator, a reference scaler, a tracking sensor and a tracking processing terminal, the magnetic field generator is used for generating a magnetic field simultaneously covering the reference scaler and the tracking sensor; the reference scaler is arranged outside a patient body and is used for inducing a magnetic field signal; the tracking sensor moves along with a medical device arranged in the body of a patient and is used for sensing a magnetic field signal; the tracking processing terminal determines the position attitude information of the reference scaler and the tracking sensor under the coordinate system of the magnetic field generator according to the magnetic field signals sensed by the reference scaler and the tracking sensor; calculating position attitude information of the tracking sensor relative ...

Passive shoulder joint assisting exoskeleton applied to automobile maintenance personnel

The invention relates to the technical field of power-assisted exoskeletons, in particular to a passive shoulder joint power-assisted exoskeleton applied to automobile maintenance personnel, which comprises a frame body, the frame body comprises a waistband, the surface of the waistband is fixedly connected with a support back plate, the surface of the waistband is fixedly connected with straps, the surface of the support back plate is connected with a support rod, and the support rod is fixedly connected with the shoulder joint. A connecting rod is connected to the surface of the supporting rod in an inserted mode. The control mechanism comprises a protective cover, and the protective cover acts on the two sides of the strap. Under the action of the control disc and the connecting rod, the supporting effect on rotation of the protective cover, the connecting shell and the control disc is achieved, under the meshing connection of the ratchet ring and the pawl, the limiting of the rotation ...

Federal learning training method and system based on block chain and data enhancement

The invention provides a federal learning training method and system based on a block chain and data enhancement, and relates to the technical field of artificial intelligence, and the method comprises the steps: carrying out the pre-training of a generative adversarial network satisfying differential privacy through an original training set; the clients jointly select a packaging client and send the pre-trained generator model to the packaging client; after receiving the generator models of all the clients, the packaging client packages the received generator models into a block and uploads the block to a block chain, and the client downloads the block containing all the participant generator models from the block chain; and the client generates new data, integrates the processed original training set with the newly generated data, and constructs a new data set for federal learning training tasks. The block chain replaces a third-party mechanism which originally needs to store the generator ...

Behavior subject association analysis method, system, device and medium

The invention belongs to the technical field of communication networks, and discloses a behavior subject association analysis method, system and device and a medium, and the behavior subject association analysis method comprises the steps: obtaining HTTP communication data to be subjected to behavior subject association analysis; based on the HTTP communication data, active behaviors of behavior subjects are obtained; obtaining a direct association item and an indirect association item based on the active behavior of the behavior subject; and performing association analysis on the active behavior of the behavior subject based on the quintuple, the direct association item and the indirect association item to obtain a behavior subject association analysis result. According to the behavior subject association analysis method provided by the invention, the behavior subject of each piece of behavior data in the HTTP communication data can be determined, and the method can be used for tracing ...

Systems, methods, and computer program products for recursive hyperspectral imaging

Systems, methods, and computer program products for recursive modification are provided. An exemplary imaging system includes a first infrared (IR) imaging device that generates first IR image data of a first field of view of the first IR imaging device at a first time, and a computing device operably connected with the first IR imaging device. The computing device receives the first IR image data from the first IR imaging device and determines a first set of pixels and a second set of pixels from among a plurality of pixels associated with the first IR image data. The computing device further determines a first modification protocol for the first set of pixels and determines a second modification protocol for the second set of pixels. In response, the computing device generates a recursive modification input based on the first modification protocol and the second modification protocol.