854results about How to "Guaranteed test accuracy" patented technology

The invention relates to a vibration table detection instrument field. In order to overcome the defects of the prior art, a signal processing approach is designed to allow a virtue instrument to be applied to the measurement field and an instrument suitable for measurement is designed accordingly on the basis of the signal processing approach. More particularly, the invention relates to a virtual vibration table detecting signal processing method and the instrument. The method comprises the processes: (1) the acceleration value of the vibration table is collected and converted into electric signals; (2) the signal is conditioned by a signal conditioning instrument; (3) the conditioned signal is collected by a data collecting card and transmitted to a computer; (4) the signal is preprocessed by the computer; (5) the preprocessed signal is discrete Fourier transformed and digital signal frequency domain filtered; (6) in the end, a speed component is output after the signal is integrated for one time; a displacement component is output after the signal is integrated for two times. The detection instrument comprises an acceleration sensor, a signal conditioning instrument, a data collecting card and a computer.

The related multifunction container-pipe gas blast experiment system comprises: an experiment device with two ball containers and pipe all arranged with sensor hole, gas in-out hole, vacuum-pressure gauge interface, discharging blast hole and an ignition hole; a gas distributing device with a steel bottle, a distribution meter, a tank and delivery pipe,; an ignition device with an electric spark generator, a spark plug and wire; a test device with a vacuum-pressure gauge, a pressure transmitter, a flame sensor and sensor wire; and a data acquisition and process part with multichannel data collector and software.

The invention provides a tool used for testing the function and performance of touch control equipment. The tool has the characteristic that multiple fingers simulate a human hand and move in a combined mode. The tool structurally comprises a plurality of finger modules, movement relations are transmitted through a connection rod telescopic mechanism among the finger modules, the aim of dynamically controlling the distances between the fingers during a touch test can be achieved, and the test function of a traditional touch screen test instrument is perfected. Moreover, on the basis that the tool has the characteristic that the multiple fingers can flexibly move, the tool is installed on a movement platform to carry out test movements, test difficulties of multi-shape touch screen devices are eliminated, various single-item touch screen tests can be completed in an integrated mode so that test efficiency can be improved, meanwhile, real touch operations, such as touch force changes and finger moving track deviation, of the hand of a person can be simulated by means of the device, user experience of the touch control equipment can be accessed when touch operations are carried out by the hand of the person, and accordingly product design can be improved, and the tool can assist in development of multi-finger application programs.

This invention provides a test method for one cavity multiple modes broad-band multiple points microwave medium multiple dielectric constants. By designing and producing a "clean" multiple frequency points, high Q cylindrical test resonance chamber of broad band and internal mould type, the method finishes identifying each target mode in the hollow resonator, thereto obtain the equivalent "cavity dimensions" of the required mode in the cavity and zero load quantity factor Q0. As for the resonantor loaded with medium, it uses test results by modes necessary for sublevel to compute frequencies of each interfered target mode finishing automatic search of resonate frequency of different modes after being interfered to test the resonate frequency of sample after loading and zero load quality factor Q0, finally, finishing test to multiple dielectric constants of different frequency according to the tested data.

The invention relates to a large-caliper plane mirror surface-shaped detection device. The large-caliber plane mirror surface-shaped detection device comprises a laser, an absorbing body, a beam splitting mirror, a standard spherical surface reflecting mirror, a detection unit and a control and acquisition computer, wherein the beam splitting mirror is arranged on an emitting light path of the laser and is used for splitting incident light entering the beam splitting mirror into transmitting light and reflecting light; the absorbing body is arranged on a reflection light path passing through the beam splitting mirror; the standard spherical surface reflecting mirror is arranged on a transmitting light path passing through the beam splitting mirror and is used for reflecting the incident light entering the standard spherical surface reflecting mirror to the beam splitting mirror; the incident light is reflected to the detection unit by the beam splitting beam; and the control and acquisition computer is connected with the detection unit. The invention provides a device for detecting the large-caliper plane mirror surface shape by using an optical fiber laser and a Hartmann wave-front sensor; and according to the device, the problem of the test of the large-caliper plane mirror surface shape is solved, the surface shape of the large-caliper plane mirror can be effectively tested and the test precision can be better ensured.

The invention discloses batch calibration equipment and a batch calibration method for intelligent pointer-type pressure gages. The batch calibration equipment comprises a horizontal calibration platform, a horizontal testing pipe, a plurality of quick connectors for being installed on a plurality of calibration pressure meters respectively, two image acquisition devices which are located in front of the horizontal calibration platform, an image processing device, a pressurization device and a pressure regulation device which regulates pressure in the horizontal testing pipe. The batch calibration method comprises the following steps of: firstly, doing a preparation work before calibration; secondly, inputting and matching models of the pressure gages to be calibrated; thirdly, obtaining data of dial plate templates; fourth, acquiring and dividing images of dial plates, and detecting straight lines at which pointers are located; fifth, matching the templates; sixth, obtaining numberical reading of the pressure meters, and the numberical reading obtaining process comprises the following steps of: obtaining dial plate image information to be processed, matching binocular stereo-vision images and processing the data. The batch calibration equipment disclosed by the invention is reasonable in design, simple and convenient in use and operation, has a good use effect, and calibration efficiency and calibration accuracy of the pointer-type pressure gages are greatly improved.

The invention discloses a white car body static stiffness restriction device of a passenger car and a static stiffness detection method. The device is characterized in that: one side of a front bearing support is provided with a pressure transducer and a hydraulic jack, a plurality of displacement sensors are arranged at the periphery of the white car body bottom surface; the front bearing support comprises a front rack, a T-shaped rack, and a I-shaped guide rail, wherein, the end portion of the front rack is connected with the very center of a crossbeam of the T-shaped rack through bolts and nuts, the crossbeam of the T-shaped rack is arranged at the left and right side of the white car body, and the lower side of the crossbeam is provided with the hydraulic jack; the bottom of the T-shaped rack is connected with the bottom of the front rack through a pin roll and a split pin; the upper surface of the crossbeam of the T-shaped rack is symmetrically provided with I-shaped guide rails; a torque value of the applied load is divided by a twisting angle to calculate a twisting stiffness, and the actual value of the load is divided by a car body deformation displacement to obtain a bending stiffness. According to the invention, the efficiency of various vehicle tests is increased, and the device cost is obviously reduced on the premise that the test accuracy is guaranteed.

The invention discloses a radio frequency integrated circuit test system. The system comprises: an upper computer, a bottom hardware control module, a test fixture board and a programmable test apparatus. The system is characterized in that: a serial port module, a circuit function setting module and a parameter test module are arranged in the upper computer; the bottom hardware control module comprises a single chip microcomputer and the single chip microcomputer is provided with a MCU serial port module, a data operation module, a MCU function initialization module and a circuit setting operation module; the serial port module is used for communication between the upper computer and the single chip microcomputer of the bottom hardware control module; the circuit function setting module is used to set and select a working mode of the test system; the parameter test module is used to select a test parameter and carry out corresponding function setting to the test parameter; function call of an automation test can be provided; read-write control is carried out to the programmable test apparatus; whether a test result is qualified is determined and indication is performed. The system can be widely used for the control and test analysis of the radio frequency circuit.

The present invention belongs to a detection and analysis method, in particular to a detection and selection method for the quality and reliability of a high power semiconductor laser and an array laser. Firstly, a V-I curve and a P-I curve of the laser are measured; an electrical derivative curve IdV / dI-I and a light derivative curve dP / dI-I and d<2>P / dI<2>-I are obtained through computer processing. Then the threshold current Ith of the measured device is obtained from the light derivative curve d<2>P / dI<2>-I or the electrical derivative curve IdV / dI-I. So the parameters of b, m, Rs1, Rs2 and h are obtained. A light characteristic when the laser is lased is given from a peak height H, a peak width W and a peak height-width ratio O at the threshold of the second order light derivative curve. Finally, the obtained parameters are compared with the normal value of parameters of the device same structure to judge the quality and reliability of the detected high power semiconductor laser or the array laser. The device filtration of the present invention is characterized by no-wear, high-speed and convenience, which is suitable for wide application.

The invention relates to a pretreatment method for measuring 14C abundance of an organic compound type sample. The method includes transferring carbon atoms in the organic compound into CO2 molecules through combustion, reacting CO2 with a NaOH solution to obtain a saturate NaHCO3 solution, heating the saturate NaHCO3 solution to obtain a saturate Na2CO3 solution, and adopting the saturate Na2CO3 solution for 14C abundance tests. The invention also provides a device used for the method. The device mainly comprises an oxygen cylinder, a nitrogen cylinder, a cold trap A, a three-way stopcock A, a combustion chamber, a cold trap B, a stone, a cold trap C, a three-way stopcock B, a conical flask, a cold trap D, a three-way stopcock C, a U-shaped gas sample collector, a three-way stopcock D, a vacuum gauge, a vacuometer, a piston D and a vacuum pump. On the basis of guaranteeing the measuring accuracy, the method largely simplifies the chemical treatment process, increases the time efficiency and reduced the cost.

The invention provides a water jacket tightness detection device and method for a bipolar plate of a fuel cell. The device comprises a gas source, a reducing valve, a pressure gauge, a testing end plate, a press and a separating clip, wherein an air inlet and an air outlet which are communicated with the inlet and outlet of the water jacket of the tested bipolar plate and an upper testing end plate positioning hole corresponding to the positioning hole of the tested bipolar plate are formed on the upper testing end plate, and the air outlet end is connected with a stop valve; the air inlet is connected with the reducing valve and the gas source, and the pressure gauge is connected between the air inlet and the reducing valve; a separating clip inlet, a separating clip outlet and a separating clip positioning hole are formed on the separating clip, and a positioning pin passes through the positioning hole; and the testing end plate clamps the tested bipolar plate, and is arranged between an upper die and a lower die of the press. The testing method comprises: introducing testing gas to a tested component and preserving pressure; and determining the air tightness of the tested component according to pressure changes in the tested component during the pressure preserving period. The method and the device have the advantages of wide measurement range, low device cost and strong interference resistance, and are simple and stable in operation.

The invention discloses a detection system for a beam control circuit of a phased array radar antenna, and an implementation method for the detection system, and mainly solves problems in the prior art that the testing is tedious, the detection cost is increased and the detection efficiency is low. The system comprises an upper computer, an FPGA chip connected with the upper computer, an interfacecontrol module which is disposed in the upper computer, a test control module which is connected with the interface control module, a command analysis module which is connected with the test controlmodule, a command generation module which is connected with the command analysis module, and a serial port communication module connected with the FPGA chip. The test control module comprises a DA read-write module, a channel amplitude and phase control module, a system self-check module, a beam control algorithm verification module, a power pulse control module, a beam control circuit flash memory control module, and an attenuation amplitude control module, wherein the DA read-write module, the channel amplitude and phase control module, the system self-check module, the beam control algorithm verification module, the power pulse control module, the beam control circuit flash memory control module and the attenuation amplitude control module are connected with the command analysis module,and the serial port communication module is connected with the FPGA chip. The system is simple and convenient to operate, is good in compatibility, is complete in test items, and is high in test efficiency.

The invention discloses an automatic test method and system of a television application. The method comprises the steps of installing an APK on a television, then building a normal or abnormal test environment according to different application services or service scenarios; and according to the built test environment, setting a test scenario of a television cluster, running a Python auto test script on the test environment, simulating a television key operation according to the Python auto test script so as to realize automatic operation of the television, storing test data of a television application service by using a Python log service procedure in the automatic operation process of the television, then writing a Python test verification script, analyzing a current log or data, performing analysis comparison on the analysis result and an expected result, and returning a test result finally. Through adoption of the automatic test method and system, the test efficiency is improved greatly, manpower cost is lowered, the test correctness rate is ensured, and the error rate is lowered; due to simulation in the abnormal test environment, the test coverage rate is improved greatly; and automatic test of the television cluster is realized.

The invention discloses a storage battery performance on-line monitoring system and a storage battery performance on-line monitoring method. Each storage battery on-line monitoring unit comprises an acquisition unit, an internal resistance measuring unit and a communication unit; batteries in a storage battery pack are divided into a plurality of units; a load and the batteries in each unit form a closed-loop circuit, and the batteries are discharged; the acquisition unit acquires discharging parameters of each battery; the internal resistance measuring unit calculates the internal resistance of each battery according to acquired information and uploads the internal resistance to the communication unit; the communication unit accesses a local area network and transmits data to a server; after receiving the data, the server analyzes, processes and stores the data; the data are published in a webpage form through a built-in web publishing function; and a computer in the local area network checks the situation of each storage battery pack by accessing a webpage. By adoption of a multi-cycle on-line testing method, safety and reliability are realized, the discharging internal resistance is tested in a grouped mode, and during test, safety operation of a power system is not influenced. The invention has the advantages of stable and accurate test result and convenient testing process.

The invention provides a method and system for testing the oil-gas-water profile of each section of a horizontal well by using environmental protection type tracers. The method comprises the steps that according to information containing the oil and gas reservoir type, the fracturing fluid type and the number of test sections, the kinds and the compositions of the chemical tracers are determined;the designed using quantity, the injection time and the injection velocity of the chemical tracer used at each section are determined; injection equipment of the tracers used for testing is determined, and the connecting process of equipment for completing on-site operation is determined and laid out before construction; injection operation of the corresponding chemical tracers required by construction sections is completed according to the designed pump injection procedure; after fracturing construction of the whole horizontal well is completed, continuous tracer test sampling operation is implemented according to the designed sampling time and frequency, and samples are tested in time after all sampling is completed; and a production profile map or a contribution ratio map of each layersection of the oil and gas reservoir horizontal well within the sampling period is drawn.

The invention provides a handheld wave-absorbing material reflectivity measuring device. The handheld wave-absorbing material reflectivity measuring device comprises a metal test platform, a to-be-measured sample plate or a standard sample plate, a supporting cover, an arched guide rail, a near-field focusing antenna, a wave-absorbing partition plate, sliding blocks, a lifting rod, a push-pull rod and a receiving and transmitting module. According to the handheld wave-absorbing material reflectivity measuring device, the near-field focusing antenna which is a novel double-antipodal structure Vivaldi antenna replaces a horn antenna to serve as a receiving and transmitting antenna, the antenna is small in size and weight, and has the low standing-wave ratio in a wide band, the high gain and the low side lobe characteristic, a near-field linear polarization plane wave can be generated, the far-field radiation environment is simulated on a near field, a test area moves from an antenna far-field area to an antenna near-field area, and test space is reduced; due to reduction of the distance between the to-be-measured sample plate and the antenna, the to-be-measured sample plate can be more intensively irradiated through an electromagnetic wave, and the influence of background reflectance on the test accuracy is reduced; meanwhile, electromagnetic wave incidence and a reflection angle can be accurately adjusted, the accuracy of a receiving-and-transmitting antenna positioning angle is improved, and the complex rate of operation is reduced.

The invention discloses a concrete stress sensor by piezoelectric properties of a PVDF (polyvinylidene fluoride) film. The concrete stress sensor comprises an upper sensor shell, a lower sensor shell and the PVDF piezoelectric film, the upper sensor shell and the lower sensor shell are buckled together, the PVDF piezoelectric film is arranged between the upper sensor shell and the lower sensor shell, a nylon sleeve is sleeved on the periphery of the PVDF piezoelectric film, so that the PVDF piezoelectric film is positioned on a boss, insulating layers are respectively arranged on the upper end face and the lower end face of the PVDF piezoelectric film and closely contact with the upper sensor shell and the lower sensor shell, the nylon sleeve and the insulating layers form a sealed insulating space, so that a PVDF piezoelectric film and the sensor shells are separated in an insulating manner, and connection electrodes are respectively arranged on the upper surface and the lower surface of the PVDF piezoelectric film, so that piezoelectric signals are led to the outside of the sensor. The PVDF piezoelectric film is clamped between the two metal shells, a load is transmitted to the PVDF film by the aid of the sensor metal shells, the concrete stress sensor is sensitive in sensing, simple in structure, convenient to package and small in size, and can be embedded into concrete materials to finish an impact stress test.

The invention discloses a carbon fiber gas cylinder detection line and a carbon fiber gas cylinder detection method. The detection line includes, in a front-to-back arrangement manner, a water pressure test apparatus, a water pressure auxiliary test apparatus and an air tightness test apparatus. The water pressure test apparatus includes a test rack, a test operation bench, a pressurizing apparatus, a test case installed on the test rack, and test trolleys for stably placing a plurality of to-be-tested gas cylinders. The water pressure auxiliary test apparatus includes a gas cylinder fixture, a transporting trolley, and a gas cylinder water-pouring-away and drying device. The air tightness test apparatus includes an air tightness detection apparatus and a second air supply apparatus for supplying air to the to-be-tested gas cylinders. The air tightness test apparatus is in a cabinet structure or a ground trough structure. The detection method includes the steps of 1) water pressure test; 2) water pouring-away and drying treatment; and 3) air tightness test. The detection line is reasonable in design and simple in operations, is good in use effects, and can easily and quickly complete water pressure test and air tightness test for a plurality of carbon fiber gas cylinders.

The invention relates to a method for measuring load thresholds of geotechnical packing accumulated deformation states under cyclic loading. According to the method, brick walls and sand bags are adopted to construct a filling model, so as to form a testing system along with loading equipment and a displacement sensor, and a cyclic loading test is performed on the filling model, so as to obtain a changing curve of accumulated deformation with loading times; then the changing curve of segmented single loading average deformation with the loading times is obtained through calculation, and a negative power function as shown in the specification is adopted to fit, so as to obtain a relation curve of a power exponent Pi value with the change of load levels; a function relation between the Pi value and the load levels is obtained by virtue of cubic polynomial regression, and the corresponding load levels when P is equal to 2, 1 and 0 are obtained through back calculation, so as to be used as the load thresholds delta t1, delta t2 and delta t3 for distinguishing different evolution states of the accumulated deformation, wherein an experimental basis is respectively provided for design and maintenance of ballastless and ballast track bed structures of railways by the delta t1 and delta t2. The method has the advantages of convenience in model manufacturing, low cost, simplicity in operation and clear distinguishing criterion, and the obtained load thresholds are accurate and reliable.

The present invention provides a planar phased array antenna fast measurement and automatic calibration method. The method includes the following steps that: the patterns, amplitudes, phases and beam widths of measured phased array antenna units and a test probe are obtained through a near-field antenna test; the probe is arranged in front of a measured phased array antenna, one of channels in the measured phased array antenna is opened in turns with the other channels closed, the coefficients of transmission between each of the channels and the probe are tested; the transmission coefficient matrix of the whole array plane of the phased array antenna can be obtained; the initial phases of the channels are calculated through using relative position relationships between the probe and the measured phased array antenna units; and if the fluctuation of the initial phase of the array plane is larger than half of the minimum phase shift quantity of phase shifters used by the array antenna, the initial phase is calibrated. The method of the invention has the advantages of short testing time and high test precision, and can not only be used for the rapid amplitude-phase calibration of a planar phased array antenna, but also can be used for the automatic detection of the amplitude of the channel units of the antenna and the prediction of the far-field pattern of the planar phased array antenna.

A static multi-optical-path star simulator comprises a flange and at least four starlight pipes, wherein each starlight pipe can produce a simulation star, optical spectrum and brightness of each starlight pipe can be separately adjusted, the starlight pipes are installed on the flange by an angular adjustment mechanism, optical axles of two arbitrary star pipes are not parallel, relative angle between two arbitrary star pipes can be adjusted in a range not smaller than 10 degrees, a large amount of simulation constellations with different constructions can be produced, brightness and spectral characteristic of all asterions can be different, geometrical similarity between two arbitrary simulation constellations is relatively low, and physical characteristics of actual star field can be well simulated.

The invention relates to an automatic control system for monitoring the film thickness of optical filming. A light projecting device is directly connected with a light entrance port of a film coating machine or is connected with an optical splitter and a reflector chest for projecting light generated by the light projecting device into the film coating machine, a light exit portal of the film coating machine is connected with a light transporting element which is connected with a light entrance port of the optical splitter, a light exit portal of the optical splitter is further connected with a light entrance port of a photoelectric signal changeover gear, or an exit ray of the film coating machine reflects light into the photoelectric signal changeover gear through the reflector chest, an electrical signal output end of the photoelectric signal changeover gear is connected with a computer through a signal processing unit. The invention further relates to an automatic control method for monitoring the film thickness. The invention improves the stability and accuracy of monitoring the film thickness and meets the requirement of filming with high degree of accuracy.

The invention discloses a detection system of a pantograph carbon slide bonding resistance of an electromotive, which comprises a computer host, a singlechip control unit and a data acquiring and processing unit which are connected with the computer host by signals, a pneumatic control device and a carbon slide bonding resistance detection device. The singlechip control unit can acquire detectiondata and transmit the detection data to the computer host for processing by the data acquiring and processing unit, and can control the actions of measurement electrodes of the carbon slide bonding resistance detection device by the pneumatic control device. The carbon slide bonding resistance detection device realizes the measurement of a resistor Rx to be measured at the bonding position of carbon slide bars by adopting four-electrode connection manner and using a serial measurement loop consisting of a resistance detection voltage-stabilizing source, a shunt resistor Rs, a power resistor RWand the resistor Rx to be measured. The detection system has the advantages of good safety and reliability and high accuracy and automation degree and can quickly test and record micro resistors arranged at the bonding position of the carbon slide bars.

The invention discloses a method for testing the mechanical property of a superhard diamond film. The testing method comprises the following steps of: measuring a hardness and an elastic modulus of the diamond film by a micron indentation method; continuously applying a load in the range of a plurality of N to thousands of N to the diamond film by an automatic loading mechanism; applying the continuous load to the surface of the diamond film by an artificial diamond indenter and controlling the indentation depth in the range of one tenth to one fifteenth of the film thickness; processing by adisplacement sensor and a computer to obtain a load-depth curve of a material; obtaining a load-depth curve in the unloading process according to a preset unloading rate; and calculating two groups of data to obtain the elastic modulus and the hardness of the material. In the invention, the hardness and the elastic modulus of the diamond film are measured by the micron indentation method; and thecheap diamond pressure head is utilized to replace an expansion diamond film pressure needle, so that the experiment cost is reduced, the experiment error is reduced, and the measurement requirementson the hardness, the elastic modulus and the film-substrate cohesion of the diamond film can be met.

The invention discloses a device for testing the performance of an optical module and aims at providing a convenient and quick test environment. The invention is realized by the following technical scheme: a PC is connected to a server through an RJ45 network cable, is connected to an optical module performance test board through a USB data line, and is connected to an optical power meter throughan RS232 serial line, the optical power meter is connected to an ROSA optical device through an optical fiber splitter, a tested optical module is connected to the test board through a gold finger slot, the average optical power of the TX end of the tested optical module is divided into two by the optical fiber splitter, one path is sent to the ROSA optical device, and the other path is sent to the optical power meter, the PC obtains the average optical power value of the optical module measured by the optical power meter, and then compares the average optical power value with an optical powerthreshold that have been configured by the server, and determines whether the average optical power value of the tested optical module is within a normal range by using the comparison result. An alarm light visually displays various performance test results of the tested optical module.

The invention provides a manmade climate comprehensive experiment system which comprises an automatic control system, an air conditioning system, a heating system and a refrigerating system, wherein a first signal output / input end of a central controller in the automatic control system is correspondingly connected with a first signal input / output end of an air-cooled hot pump unit in the air conditioning system, a second signal output / input end of the central controller in the automatic control system is correspondingly connected with a first signal input / output end of a combined air conditioning unit in the air conditioning system, a third signal output / input end of the central controller in the automatic control system is correspondingly connected with a first signal input / output end ofa simulation environment zone temperature sensor in the heating system, and a fourth signal output / input end of the central controller in the automatic control system is correspondingly connected with a second signal input / output end of a simulation environment zone temperature sensor in the refrigerating system. The manmade climate comprehensive experiment system has the advantages that the structure is reasonable, the functions are powerful, the work condition conversion operation is convenient, the experiment data acquisition precision is high, a data acquisition and analysis system is convenient to use, and the test accuracy can be ensured.

The invention discloses a full-automatic test device. The full-automatic test device comprises a first rack, a second rack and a third rack, wherein the first rack, the second rack and the third rack are arranged along the X axis, the first rack is provided with a first conveying mechanism used for conveying tested components and a transfer positioning platform used for positioning the tested components, the first rack is provided with a first carrying mechanism used for carrying the tested components to the transfer positioning platform, the second rack is provided with a plurality of test mechanisms used for detecting whether the tested components are qualified or not in a rectangular array mode, all the test mechanisms are connected with a detection unit, the third rack is provided with a material receiving unit used for colleting qualified products and unqualified products respectively, and a second carrying mechanism is arranged on the side face of the first rack, the side face of the second rack and the side face of the third rack, and is used for carrying the tested components on the transfer positioning platform to the test mechanisms to be detected and then placing the tested components on the material receiving unit after detection is carried out. Automatic line circulating operation is achieved, no personnel are needed for watching over, operation efficiency and detection efficiency are improved, and the full-automatic test device is stable in detection and good in detection effect.

The invention relates to a performance test method of a hydraulic control unit of a car brake system. The performance test method includes the following steps that a performance test system of the hydraulic control unit of the car brake system is arranged, the performance test system comprises a pressure boosting device, a hydraulic pipeline system, a control measurement device and an environment simulation device, the pressure boosting device comprises an oil tank, a variable pump, a pressure-stabilization energy accumulator, a servo proportional valve, a first pneumatic ball valve and a second pneumatic ball valve, the hydraulic pipeline system comprises a first simulation main cylinder, a second simulation main cylinder, a first oil can, a second oil can, pneumatic ball valves from the third one to the twelfth one, the hydraulic control unit, hydraulic steel cylinders from the first one to the fourth one and an exhaust constant displacement pump, and the control measurement device comprises an industrial personal computer and a sensor. The flow and active pressure boosting performance of a plunger pump in the hydraulic control unit under different back pressure, pressure and temperature are tested. The sealing performance and response time of an electromagnetic valve in the hydraulic control unit are tested. The volume of an energy accumulator in the hydraulic control unit is tested.

The invention relates to a radio frequency identification electronic label antenna complex impedance test device and a method. A cable is respectively and electrically connected with a vector network analyzer and a second metal plate, the second metal plate is embedded inside a first metal plate, a core of a switching port is electrically connected with a feed port of a semi-arm electronic label antenna, and a sheath of the switching port is connected with the second metal plate in a short-circuit way. By utilizing the principle of an image method and testing the impedance of the semi-arm antenna port, the test difficulty for the balance feed-form antenna can be solved. Compared with the steps of a balance / imbalance converter and a matching network required for testing the balance feed-form antenna impedance, the test procedure of the device is simple and convenient, and the device has economic benefit while ensuring the test precision.

The invention discloses an automatic testing system and an automatic testing method for the non-contact transmission characteristics of a millimeter waveband. The method comprises the following steps of: initializing the automatic testing system for the non-contact transmission characteristics of the millimeter waveband; calibrating the automatic testing system for the non-contact transmission characteristics of the millimeter waveband, and finishing a spatial transmission characteristic test under the condition of no element to be tested to obtain test information in a calibration state; finishing a transmission characteristic test under the condition that the element to be tested exists to obtain test information in a test state; obtaining the corresponding power information of a transmitter and a receiver under each frequency value; and subtracting power information obtained in the calibration state from power information obtained in the test state, and displaying a test curve of the transmission characteristics of the element to be tested. By the system and the method, a test in transmission characteristic parameters of 76 to 77GHz can be realized automatically, the problem of absence of millimeter wave testing means and testing equipment is solved, and the shortcomings of high cost, large volume, difficulties in automatic control and the like of testing equipment are overcome.