Method, device and apparatus for sending antenna signals

The invention discloses a method, device and apparatus for sending antenna signals. The apparatus comprises an array antenna and an execution module, wherein the array antenna is used for sending circular polarized antenna signals and/or linear polarization antenna signals, and the execution module is used for determining that the array antenna reemits the circular polarized antenna signals and/or the linear polarization antenna signals according to received feedback signals, the feedback signals being used for feeding back current channel sending paths. By using the method, device and apparatus, the problem is solved that the data transmission rate is rapidly decreased because when an electromagnetic wave propagation path changes, only original antenna signals can be continuously sent, and it is impossible to send proper antenna signals according to path change, which kind of antenna signals should be sent can be determined through a current channel sending path, and the data transmission ...

Cross polarization filter

The invention belongs to the technical field of lasers, and particularly relates to a cross polarization filter which comprises two polarization devices and an optical element arranged between the two polarization devices, and the two polarization devices are used for transmitting polarized light with the polarization directions perpendicular to each other respectively. And the optical element is used for converting the polarization direction of the light pulse transmitted from the first polarization device into the polarization direction of the light pulse in the second polarization state, and broadening the spectrum of the light pulse. The device provided by the invention is arranged in a system to avoid using a lens, so that the problem of air ionization caused by overhigh peak intensity at the focus does not need to be considered, the device can normally work in air, and compared with a traditional XPW device, the output energy of the XPW filter can be improved to a great extent (because ...

Vertical door closer

The invention discloses a vertical door closer which comprises a barrel body and a lower supporting arm. A spline shaft is arranged in the barrel body, an outer spline is arranged at the outer end of the spline shaft, a cam sleeve is arranged at the other end of the barrel body, an oil needle and a cam are arranged in the cam sleeve axially, two concentric pin shafts are arranged in the cam sleeve, an inner spline matched with the outer spline is arranged at the bottom end of the cam, the cam is mounted on the spline shaft through the splines, a single-phase valve device is arranged in the cam, an oil needle hole is formed in the single-phase valve device, the oil needle is inserted into the oil needle hole, the upper end face of a guide wheel is of a conical structure, the pin shaft is disposed in the conical structure, a lower limb arm after being connected at the lower end of the spline shaft in a sleeved manner is mounted at the lower end of the barrel body, a spring is arranged in ...

System and method for searching signal

The invention proposes a signal searching system and the method thereof, which is used for searching the WiMAX signals of a plurality of frequency bands; wherein, the signal searching method includes the following steps: Step S302, receiving the WiMAX signals of the frequency bands and switching between the WiMAX signals of the frequency bands to select the WiMAX signals; step S304, converting the selected WiMAX signals into zero intermediate frequency signals and carrying out automatic searching to the frequency bands and frequency points of the zero intermediate frequency; and step S306, treating the searched zero intermediate frequency signals and displaying the relevant information of the treated zero intermediate frequency signals. The relevant information of the zero intermediate frequency displayed on a display module at least includes one of the following information: frequency band information, frequency point information and intensity information.

Vertical door closer

The utility model discloses a vertical door closer, including barrel and lower support arm, be equipped with the integral key shaft in the barrel, the upper end of barrel is equipped with the cam cover, cam cover in be equipped with trunk -piston and spindle along the axial, be equipped with the slide on the trunk -piston outer wall, the upper end of trunk -piston is equipped with the check valve device, is equipped with single -phase valve and spindle hole on the check valve device, the spindle inserts the spindle hole in, the lower extreme of trunk -piston is installed through the spline the upper end of integral key shaft, be equipped with two balls with barrel center line symmetry on the lateral wall of cam cover, the central plane comprises the centre of sphere of two balls and the axis of barrel, two ball spherical outside surfaces respectively with the slide contact, the low limbs arm cup joint in the integral key shaft lower extreme after install cylinder bottom, be equipped with ...

Apparatus and method for switching antenna, wireless terminal

The invention discloses an antenna switching device, a method and a wireless terminal, wherein, the antenna switching device is used for switching between a built-in antenna and a remote antenna. The device comprises a radio frequency switch and a radio frequency output unit connected with the radio frequency switch, an remote antenna interface and a central processing unit, wherein, the radio frequency switch is used for switching between the built-in antenna and the remote antenna; an remote antenna interface is connected between the radio frequency switch and the remote antenna, and is used for providing the radio frequency interface of the remote antenna, detecting the use state of the remote antenna, and reporting detecting results; and the central processing unit is connected to the remote antenna and the radio frequency switch, and used for controlling the switching of the radio frequency switch based on the detecting results. The antenna switching device, the method and the wireless ...

Accumulator internal resistance measurement method

The invention relates to an internal resistance measuring method of an accumulator, which belongs to a measuring method that the internal resistance of the accumulator is measured by utilizing heavy current direct current discharge method. The specific steps are as follows: (1) a resistance with high power, high precision and low resistance value is selected as the discharge resistance; (2) closeof the high power relay is controlled, and the discharge circuit is switched on to cause the accumulator to perform spark on the discharge resistance from earth. The discharge time is controlled within 7 - 12s and the discharge current I and voltage at both terminals of the accumulator V1 are measured at the same time; (3) the discharge circuit is switched off for a 1 -2ms delay time, and the voltage at both terminals of the accumulator V2 are measured for the moment; and (4) the internal resistance of the accumulator is calculated. The method has the advantages of high measurement accuracy, and ...

Cross-polarized wave generating device with pulse cleaning function

The invention belongs to the technical field of lasers, and particularly relates to a pulse-cleaning cross-polarized wave generation device, which comprises a first polarization device and a second polarization device, and is characterized in that the first polarization device is used for the polarization state of transmitted polarized light and is perpendicular to the polarization state of the transmitted polarized light of the second polarization device; the light polarization state conversion device is arranged between the first polarization device and the second polarization device and is used for converting a first light pulse, which is formed after the flat-topped light beam is transmitted by the first polarization device, into a second light pulse which is perpendicular to the polarization state of the first light pulse; and after the second optical pulse is transmitted by the second polarization device, an orthogonal polarization wave is output. Moreover, the cross-polarization ...

Switching method of visible light communication device and terminal device at access point

The invention discloses a switching method of a visible light communication device and a terminal device at an access point, and relates to the visible light communication technology. The method comprises the steps that different identification codes are configured for the visible light communication device; when the certain terminal device meets the switching condition, the visible light communication device with the signal quality higher than that of an original access point is selected as a target access point through the original access point of the terminal device according to a peripheral access list, the capacity of the terminal device is sent to the target access point, and a switching request is initiated; the working mode is selected through the original access point according to an instruction of the target access point, the terminal device is informed of the working mode, and a response fed back by the terminal device is forwarded to the target access point; when the original ...

Method for quickly fattening solutions on surface of flexible metal strip

The invention relates to a method for quickly fattening solutions on the surface of a flexible metal strip, and belongs to the technical field of the preparation of strips of a high temperature superconducting coating conductor. The method provided by the invention comprises the following steps: (1) preparing pioneer liquid 1 using aluminium nitrate, ethanol and yttrium acetate in proportions; (2) preparing pioneer liquid 2 using the yttrium acetate and propanoic acid in proportions; (3) continuously cleaning the metal strips using acetone at a certain speed; (4) continuously cleaning the metal strip using the ethanol at a certain speed; (5) preparing an amorphous yttrium aluminum oxide film using continuous tape feeding and ladder warming equipment to perform coating and heat treatment on the pioneer liquid 1; (6) carrying out coating and heat treatment on the pioneer liquid 2 to prepare an amorphous yttrium oxide film with a smooth surface using the continuous tape feeding and ladder ...

Switching method for visible-light communication device and terminal device at access point

A switching method and device for a visible-light communication device and a terminal device at an access point, comprising: configuring different identification codes for visible-light communication devices; when a terminal device satisfies a switching condition, its original access point selecting a visible-light communication device whose signal quality is higher than that of the original access point as a target access point according to a peripheral access list, sending its capability to the target access point, and initiating a switching request; the original access point selecting an operating mode according to an indication of the target access point to notify the terminal device, and forwarding response fed back by the terminal device to the target access point; and when receiving response for the switching request fed back by the target access point and downlink resource allocation information, the original access point sending a switching command to the terminal device to switch.

Vertical door closer

The utility model discloses a vertical door closer, including the barrel, lower support arm is equipped with the integral key shaft in the barrel, and the upper end of this integral key shaft is equipped with the external splines, the other end of barrel is equipped with the cam cover, is equipped with spindle and cam along the axial in the cam cover, be equipped with in the cam cover two with the core pin axle, the bottom of cam be equipped with with external splines matched with internal spline, this cam is installed on the integral key shaft through the spline, be equipped with the check valve device in the cam, be equipped with on the check valve device with the spindle hole, the spindle inserts the spindle hole in, the toper column structure is personally submitted to the upper end of cam, the round pin axle is arranged in the toper column structure in, down the support arm cup joint in the integral key shaft lower extreme after, install cylinder bottom, the barrel in be equipped with ...

Preparation method of template suitable for growing REBCO superconducting layer on metal baseband

The invention relates to a preparation method of a template suitable for growing a REBCO superconducting layer on a metal baseband, belonging to the technical field of preparation of high-temperature superconducting materials. The method comprises the following steps: (1) cleaning the surface of the metal baseband; (2) preparing an isolating layer on the metal baseband by a chemical solution flattening process (SDP); (3) preparing a biaxial-structure magnesium oxide layer on the isolating layer by an ion beam assisted radio-frequency magnetron sputtering process (IBAD-MgO); (4) preparing a lanthanum manganate by a radio-frequency magnetron sputtering process; and (5) preparing a cerium oxide layer by a direct-current magnetic-control reactive sputtering process. By comprehensively using the physical and chemical preparation processes, the method provides a low-cost preparation method for large-scale production of the high-temperature superconducting strip template.

Radio access data terminal and system and method for implementing data communication thereof

The disclosure discloses a radio access data terminal and a system and a method for implementing data communications by the radio access data terminal, wherein the system comprises: the radio access data terminal, which is configured to process a downlink radio signal received by the radio access data terminal to obtain a downlink digital In-phase/Quadrature-phase (I/Q) signal, transmit the downlink digital I/Q signal to a general-purpose computer, and perform a bus protocol conversion on uplink digital information output by the general-purpose computer, modulate the converted signal and then transmit the modulated signal; and the general-purpose computer, which is configured to perform data service processing on the downlink digital I/Q signal received by a system bus and output uplink digital information which needs to be transmitted. Therefore, the disclosure can solve the problems of high power consumption and large heat dissipating capacity of an existing radio access data terminal ...

Rubber constant-weight intelligent control device

The utility model discloses a rubber constant-weight intelligent control device. The system comprises a conveying unit, a main control device, an intercepting device and a weighing device which are arranged in sequence, the conveying unit, the intercepting device and the weighing device are all electrically connected with the main control device. Wherein the weighing device comprises a weighing sensor and a weight display; wherein the weighing sensor is connected with the input end of the main control device, the output end of the main control device is connected with the weighing display, theinterception device comprises a cutter mechanism and an interception driving circuit, the cutter mechanism is connected with the main control device through the interception driving circuit, and thebeneficial effect of rapid and accurate interception is achieved.

Fixing device of data memory and data memory module

Low-cost preparing method for high-temperature superconductive coated conductor strip

The invention provides a low-cost preparing method for a high-temperature superconductive coated conductor strip and belongs to the technical field of manufacturing of high-temperature superconductive materials. The low-cost preparing method comprises the following steps that (1) the surface of a metal base band is cleaned; (2) by the adoption of the chemical solution deposition planarization (SDP) method, an isolating layer is prepared on the metal base band; (3) by the adoption of an ion beam auxiliary radio frequency magnetron sputtering method (IBAD-MgO), a biaxial texture magnesium oxide layer is prepared on the isolating layer; (4) a lanthanum manganate layer is prepared by the adoption of the radio frequency magnetron sputtering method; (5) a cerium oxide layer is prepared by the adoption of a direct-current magnetron reactive sputtering method; (6) a superconductive layer is prepared by the adoption of a metal organic deposition decomposition method (MOD); (7) a silver protective ...

Vehicle-mounted storage battery online monitoring system

The invention belongs to the technical field of storage battery monitoring, and particularly relates to a vehicle-mounted storage battery online monitoring system. The system comprises a current sensor, sampling boxes, a main controller, a working power supply and a PC (Personal Computer), wherein the main controller comprises a communication circuit, a storage unit and a single-chip microcomputer; the connection among the sampling boxes, the main controller and the computer is realized through the communication circuit; one sampling box is arranged on the top of each single battery; each sampling box is connected with the main controller through a series bus in order to realize measurement of the voltage of each single storage battery and the battery temperature. The current sensor passes through the anode or cathode line of a battery pack and is connected to the main controller through a lead, thereby realizing high-accuracy and high-linearity measurement of the current signal of the ...

System and method for searching signal

The invention proposes a signal searching system and the method thereof, which is used for searching the WiMAX signals of a plurality of frequency bands; wherein, the signal searching method includes the following steps: Step S302, receiving the WiMAX signals of the frequency bands and switching between the WiMAX signals of the frequency bands to select the WiMAX signals; step S304, converting the selected WiMAX signals into zero intermediate frequency signals and carrying out automatic searching to the frequency bands and frequency points of the zero intermediate frequency; and step S306, treating the searched zero intermediate frequency signals and displaying the relevant information of the treated zero intermediate frequency signals. The relevant information of the zero intermediate frequency displayed on a display module at least includes one of the following information: frequency band information, frequency point information and intensity information.

Water valve structure for automobile and automobile with same

The invention provides a water valve structure for an automobile and the automobile with the same. The water valve structure comprises a water tube, a water valve, exhaust valve blocks and a driving component, wherein the water valve penetrates through the water tube and can rotate relative to the water tube; the water valve comprise a body part and a valve block part; the valve block part is at least partially positioned inside the water tube; the body part is at least partially positioned outside the water tube; a cavity, which is internally communicated with the water tube, is defined inside the body part; the body part is internally provided with a rotating shaft part which is fixed with the body part; a shaft hole, which is communicated with the cavity, is formed inside the rotating shaft part; a water-gas separation cavity is also formed in the end, relatively far away from the valve block part, of the body part; the water-gas separation cavity is communicated with the shaft hole; ...

Nerve growth factor cDNA, clone and expresion of Chinese cobra

The invention is cDNA, cloning and expression of Chinese cobra neural growth factor (NGF), relating to cDNA and cloning of recombinant Chinese cobra neural growth factor, expression of neural growth factor, a method of using its expression carrier to prepare it and pharmacological use of the mentioned protein, separate-extracting total RNA from the poison gland of Chinese cobra, using RT-PCR method to make reverse transcription to get total cDNA, using the primer designed by us to provide a specific Cdna sequence at a length of 348 bp polynucleotide sequence and also providing a small-molecular weight protein, the molecular weight about 13000, successfully expressed in pichia pastoris. The recombinant neutral growth factor has pharmaceutical use in the aspects of reducing blood sugar and improving pancreas islet as well as curing peripheral polyneuritis caused by diabetes.

Endogenous particle hybrid reinforced aluminum matrix composite and preparation method thereof

The invention provides an endogenous particle hybrid reinforced aluminum matrix composite and a preparation method thereof and belongs to the technical field of composites. The endogenous particle hybrid reinforced aluminum matrix composite is prepared from the following components in percentage by weight: 0-15% of Si, 0-8% of Cu, 0-5% of Mg, 0.1-15% of TiB2 particles, 0.1-10% of TiC particles and the balance of Al. The endogenous particle hybrid reinforced aluminum matrix composite comprises the following steps: (1) adding commercially pure aluminum to a crucible, melting an aluminum ingot and heating in the presence of argon; (2) evenly mixing AlTi20 powder and B4C particles as well as Ce2O3 together and drying; (3) injecting the mixture into the melt by use of an aluminum alloy refining rotary injection device, controlling the flow of the argon and performing mechanical stirring; (4) after the reaction is terminated, withdrawing from the rotary injection device and standing; (5) pouring ...

Machining waste extrusion treatment equipment

The invention discloses machining waste extrusion treatment equipment which comprises a box body and an extrusion device used for centrally flattening metal filings. The extrusion device comprises a first extrusion roller arranged on the upper portion of the inner side of the box body, a plurality of annular grooves formed in the arc face of the first extrusion roller, a plurality of semicircular grooves formed in one sides of the annular grooves, special-shaped blocks arranged on one sides of the semicircular grooves, arc-shaped cavities formed in one sides of the special-shaped blocks, springs arranged at one ends of the arc-shaped cavities and arc-shaped rods arranged on one sides of the semicircular grooves. The progressive ring is arranged on one side of the annular groove, the second extrusion roller is arranged on the arc face of the inner side of the progressive ring, the third extrusion roller is arranged on one side of the arc face of the second extrusion roller, the first motor ...

Vertical automatic door closer

The utility model discloses a vertical automatic door closer, including barrel and lower support arm, be equipped with the integral key shaft in the barrel, the other end of barrel is equipped with the cam cover, follows the axial in the cam cover and is equipped with spindle and cam gearing, and the cam gearing includes hollow cylindricality piston and cam, and the upper end of cylindricality piston is equipped with the check valve device, is equipped with the spindle hole on the center part of check valve device, and the hypomere of spindle is arranged in the spindle hole in, be equipped with the round pin axle on the cylindricality piston, the lower extreme of cylindricality piston is installed in the integral key shaft upper end through the spline, the cam include conical cam and lower conical cam, the taper surface of two conical cams forms the slide relatively, this slide with the round pin axle carry out axial plane contact, down the support arm cup joint in the integral key shaft ...

Rapid surface chemical solution planarization equipment of flexible metal strip

The invention relates to rapid surface chemical solution planarization equipment of a flexible metal strip, belonging to the technical field of dip coating. The whole equipment comprises a rack, a multi-channel strip transmission control system, a heating system, an exhaust system, a liquid adding system and a control system, wherein the multi-channel strip transmission control system is arranged on the rack and comprises two driving wheels, a speed regulation motor, a tachometer wheel, an upper pulley block and a lower pulley block, the heating control system is arranged on the rack and comprises six (not limited to six) vertical tubular furnaces, each tubular furnace is provided with three (or more) independent heating regions A, B and C, the exhaust system comprises an exhaust gas collection cavity, an exhaust pipe and an outdoor exhaust fan, the liquid adding system comprises a liquid groove, a liquid inlet pipe and a liquid outlet pipe. In the equipment, continuous strip transmission ...

Ultraviolet disinfecting telephone

The utility model relates to an ultraviolet sterilizing telephone which comprises a speaker and a telephone seat. An ultraviolet sterilizing lamp and a control circuit thereof are installed at a position, which corresponds to a telephone transmitter of the speaker, on the telephone seat, and a power switch of the control circuit is a pressing switch pressed by the speaker. After the speaker is laid down, the utility model can automatically carry out timing irradiation to the speaker for sterilization, so that the phenomenon that the cross infection of pathogenic bacteria occurs when existing telephones are used is avoided.

Vertical door closer footing

The utility model discloses a vertical door closer footing, including the footing box, establish footing adjusting device in this footing box, this footing adjusting device's one end is the arc structure, and the other end is bar -type texture, the middle part of arc structure be equipped with the angle modulation structure, a bolt location structure is respectively established to the both sides of this arc structure, bar -type texture on be equipped with bolt elastic structure. In when construction, the position that only need prefabricate the footing box during installation door closer, can be based on and close an angle, and that adjusts the door closer at will closes an angle and door closer pre -compaction angle.

Regenerative amplifier for compensating thermal lens effect of titanium sapphire by lens

The invention belongs to the technical field of lasers, and particularly relates to a regenerative amplifier with a lens compensation titanium sapphire thermal lens effect, which comprises a seed light source, a gain medium, a pumping source and a seed light reflector system, pumping light generated by the pumping source is used for exciting the gain medium and providing energy for amplification of seed light generated by the seed light source, the seed light reflector system is arranged on a light path of the seed light so that the seed light can penetrate through the gain medium for multiple times through reflection to achieve amplification of the seed light, and the seed light source further comprises a compensation lens arranged on the light path of the seed light. And the seed light amplified by the gain medium passes through the compensation lens, so that the influence of the thermal lens effect of the gain medium on the amplified seed light is weakened. The effect of avoiding the ...

Wireless access data terminal and system and method for realizing data communication

The present invention discloses a wireless access data terminal and a system and a method for realizing data communication in order to solve the problems that the existing wireless access data terminals have large power consumption and large heat release amount and cause the low use rate of the central processing units (CPU) of general computers. The system for realizing data communication with a wireless access data terminal comprises a wireless access data terminal. The wireless access data terminal is used for mixing frequencies for downstream wireless signals from an air interface and obtaining downstream digital IQ signals through analog-to-digital conversion. The downstream digital IQ signals are converted by a bus protocol and then connected to the system bus of the CPU of a general computer. The wireless access data terminal is also used for carrying out digital-to-analog conversion for upstream digital IQ signals obtained by converting upstream digital information output by the ...

Accumulator internal resistance measurement method

The invention relates to an internal resistance measuring method of an accumulator, which belongs to a measuring method that the internal resistance of the accumulator is measured by utilizing heavy current direct current discharge method. The specific steps are as follows: (1) a resistance with high power, high precision and low resistance value is selected as the discharge resistance; (2) close of the high power relay is controlled, and the discharge circuit is switched on to cause the accumulator to perform spark on the discharge resistance from earth. The discharge time is controlled within 7 - 12s and the discharge current I and voltage at both terminals of the accumulator V1 are measured at the same time; (3) the discharge circuit is switched off for a 1 -2ms delay time, and the voltage at both terminals of the accumulator V2 are measured for the moment; and (4) the internal resistance of the accumulator is calculated. The method has the advantages of high measurement accuracy, and ...

Three -dimensional automatic door closer footing

The utility model discloses a three -dimensional automatic door closer footing, including the footing box, be equipped with footing adjusting device in this footing box, this footing adjusting device's one end is the arc structure, and the other end is bar -type texture, the middle part of arc structure be equipped with the internal spline groove, this internal spline inslot is equipped with door closer location structure, the door closer location structure outside is equipped with the external splines, door closer constant head tank upper portion is equipped with the door closer constant head tank, the both sides of this arc structure respectively establish a bolt location structure, bar -type texture on be equipped with bolt elastic structure.

一种多通道数据测试方法

The invention relates to a multichannel data testing method, including the processing courses as follows: according to the performance parameters of a tested digital device, connecting computer parallel or serial interface to the controlled pins of relative device in need of input control one to one; collecting all the binary digital information to be transmitted by the computer parallel interface in all possible digital states of each channel, so as to form a data file controlling output information of computer parallel interface; inputting the data file and utilizing the parallel or serial interface to run relative computer number delivering software to deliver a number so as to set each state of the digital device; concurrently recording response parameter numerical value to be tested of each state of each channel. It overcomes the defect in incomplete data tested by routine sampling, adopts all possible digital states of multiple channels and synchronously utilizes computer parallel ...

Switching Method for Visible-Light Communication Device and Terminal Device at Access Point

A switching method and device for a visible-light communication device and a terminal device at an access point, comprising: configuring different identification codes for visible-light communication devices; when a terminal device satisfies a switching condition, its original access point selecting a visible-light communication device whose signal quality is higher than that of the original access point as a target access point according to a peripheral access list, sending its capability to the target access point, and initiating a switching request; the original access point selecting an operating mode according to an indication of the target access point to notify the terminal device, and forwarding response fed back by the terminal device to the target access point; and when receiving response for the switching request fed back by the target access point and downlink resource allocation information, the original access point sending a switching command to the terminal device to switch. 1. A switching method for a visible-light communication terminal device at an access point , comprising:when a terminal device satisfies a switching condition, an original access point of the terminal device selecting a visible-light communication device of which signal quality is higher than that of the original access point as a target access point according to an identification code and signal quality of each visible-light communication device in a peripheral access list of the terminal device, sending a capability of the terminal device to the target access point, and initiating a switching request to the target access point;the original access point selecting an operating mode according to an indication of the target access point, and notifying the selected operating mode to the terminal device, and forwarding response information fed back by the terminal device to the target access point; andafter receiving response information for the switching request fed back by the ...

Système et procédé de recherche de signal