65results about How to "Solving testing challenges" patented technology

The invention provides a method for measuring the baseband remote radio frequency subsystem RRU of WCDMA and TD-SCDMA in 3G technology, a measuring system and an analog BBU device for measuring the baseband remote radio frequency subsystem RRU; the invention is characterized in that: an analog BBU is arranged as an unvarnished transmission channel and connected with the RRU to be tested; the control signaling and IQ data are transferred to RRU after coding by the control platform; the radio frequency output of RRU is connected with a spectrum analyzer to detect the output signals, and connected with an input signal of a signal generator; the digital signals transferred by BBU are transferred to the spectrum analyzer by RRU after DAC converting to detect, and the starting, resetting, module detecting of RRU and measurement of the whole machine in the receiving and sending performances are finished. The invention has the advantages that the problems that the current non-mainstream equipment manufacturers need to have the baseband resource pool BBU to finish testing the downlink uplink IQ data of the RRU and the optical fiber link are solved, the testing cost is greatly reduced, and the testing efficiency is improved.

The invention relates to a method for testing strata of a horizontal well, which is applied to the test of the strata of a horizontal well during casing well completion. The method comprises the steps of: setting parameters for a voltage-controlled electric multi-stream test valve, and putting the test valve into a casing of an oil well; performing the settlement of an annulus hydrostatic packer;performing annulus pressurization on an oil jacket by utilizing a pumper on the ground to realize well opening and well closing; completing sampling operation during the last closing operation, and simultaneously, recording the variation conditions of pressure and temperature in the overall process of construction by a pressure gauge in a pressure gauge support cylinder of the voltage-controlled electric multi-stream test valve; opening a reverse circulation valve by utilizing an external-force punch, deblocking the annulus hydrostatic packer by lifting a pipe column upwards to lift a stratumtesting pipe column and a mating tool safely. The method has the advantages that in a process pipe column for testing the strata of the horizontal well, the settlement of the packer is performed by utilizing the pressure of a casing annulus hydrostatic column, so that other stratum sections and well completion liquid are isolated from a test layer; and ground pressure pulse signals control the voltage-controlled electric multi-stream test valve to realize the well opening and well closing operation.

The invention discloses a spectral responsivity test method for a plane array detector, which belongs to the field of optical test and metering. The method is characterized in that on the basis of the spectral responsivity test method for a unit detector, the spectral responsivity of an image element in the center of the plane array detector is tested, the measurement of the space uniformity of the plane array detector is combined, and the accurate measurement on the full-wave-band spectral responsivity of the plane array detector in the whole photosensitive surface is realized. The test method solves the difficult problem of the spectral responsivity measurement of the plane array detector, the blank of the spectral responsivity measurement field of the plane array detector is filled, and in addition, the method has the characteristics that the resources are shared, the cost is saved, and the measuring efficiency is high.

The invention discloses a real-time monitoring and prewarning system and method for the damage depth of a coal seam floor of a stope face. The system comprises a plurality of drill holes formed in the working face of each connected lane. Distributed strain sensing cables are separately buried in all the drill holes. A plurality of data acquisition substations are arranged in an air return way in a mine. The strain sensing cables in all the connected lanes are connected with the corresponding data acquisition substations separately. The data acquisition substations are connected with one another through cables and then are connected with a multi-channel substation controller through a mining network. A monitoring station is connected with the multi-channel substation controller through a strain acquisition instrument. Strain data of all the drill holes are acquired by the multi-channel substation controller, dynamic acquisition, processing and early warning explaining operation of the strain data volume of the floor rock stratum of the whole region of the working face are conducted in real time, the destructive growth depth of a floor in the working face is monitored in real time through the strain change of a rock stratum, and the water inrush prediction of the floor of the working face is improved.

The invention relates to a multiple network unit imitate testing system and relative method. Said system comprises a graphic user interface, a manager and a multiple network unit imitate system. The invention is characterized in that: said system comprises a proxy manager and a simulate proxy; wherein, the proxy manager can generate the proxy manager relative to the network unit mark according to the network unit distribution information; the manager according the network unit mark builds the communication channel (C2) between several network units of said multiple network unit imitate system; the manager via the communication channel (C2) relative to one network unit mark sends the operation instruction to the simulate proxy relative to the network unit mark; the proxy manager via the communication channel (C1) communicates with the manager to report the operation result of simulate proxy to the manager to display the operation result on the graphic user interface. The invention can realize the imitation of multiple network units without several computers, to solve the problem that testing large scale network.

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 a graph database test method and system, equipment and a storage medium, and the method comprises the steps: generating graph data meeting a target service scene according to the requirements of the target business scene; determining a test type for the to-be-tested graph database; generating test data suitable for the test type according to the test type and the graph datameeting the target service scene; and testing the to-be-tested graph database according to the test data suitable for the test type. That is to say, graph data meeting different service scenes is dynamically generated according to different service scene requirements. The to-be-tested graph database is tested based on the graph data meeting different business scenes; the problem of graph data testing in the prior art is solved, the function of testing the graph database is achieved, the complex relation of multiple scenes can be covered, the expression difference of the graph database systemin different scenes is achieved, the application scene of the testing scheme is greatly expanded, and the reusability of the testing system is improved.

The invention relates to the test of a DDN communication power supply, which solves the difficult problem of testing the non-common ground voltage and current between the test equipment and the DDN communication power supply. The communication power supply module intelligent tester of the present invention is a test system based on embedded technology, which takes the power supply module of the data transmission device (DDN) as the test object, and performs testing and control simulation on two power supply interfaces and one control interface. The tester includes a microprocessor circuit, a display and input circuit, a measurement circuit, an analog control circuit, a power supply circuit, an interface circuit and a control bus. The interconnection of the measurement circuits is realized through the data bus, and the power supply circuit is controlled by the microprocessor circuit. The DDN communication power supply under test provides power. Its advantage is that it can test standard voltage and special voltage and current at the same time, solves the simulation of DDN communication power hot standby mode, control function and load of advanced communication in offline state, completes signal integrity test and rapid fault location .

The invention relates to an improvement to a method for testing the surface energy of high viscosity resin, belonging to resin surface energy testing technologies. The method is based on an inverse gas chromatograph and is characterized in by comprising the following steps of: preparing a resin solution; preparing impregnated glass fiber; preparing a chromatographic column; and testing the surface energy of the resin. The invention provides a method for testing the surface energy of high viscosity resin, which solves the difficulty of testing the surface energy of high viscosity resin.

The invention provides a fluid phase analysis apparatus and a fluid phase analysis method. The fluid phase analysis apparatus includes at least one set of analysis units. Each analysis unit includes a first container, a second container and a sample transfer device. The sample transfer device achieves accurate transfer of a test sample through change of volume of inside space itself and meanwhile tests the changes of relative parameters of the test sample. Macroscopically, the apparatus allows single-phase and double-phase situations of crude oil to be observed directly, and microscopically, allows P-V relationship analysis and flash experiment test to be carried out under different phase conditions. By means of a plurality of fine measurements of volume change, bubble point pressure, gas-oil ratio, formation volume factor and the like stratum parameters of stratum oil are accurately obtained. The apparatus and the method solve a difficult problem of test of basic phase parameters of a micro-scale sample, thereby saving cost in on-site sampling and operations on an oil and gas field.

The invention discloses an ice cutter test device which comprises a supporting frame, wherein a mounting plate is arranged on the top of the supporting frame; a cutter rack, a protection cover frame, a driver and the like are fixedly arranged on the mounting plate; the ice cutter test device further comprises an ice cutter and a protection cover; one end of the ice cutter is fixed on the cutter rack; the ice cutter is positioned at the center of an air duct, and the front-edge working surface is perpendicular to the coming flow; the protection cover can rotate, so that the ice cutter has two states, namely a covered state and a non-covered state; the liquid water content value corresponding to the air duct can be calculated by measuring the icing thickness at the front edge of the ice cutter. The ice cutter test device belongs to initiated equipment for measuring and calibrating the liquid water content in the iced air duct, is simple in structure and working theory, fills the blank of the field and is good in implementation effect.

The invention relates to a refrigerant side performance tester of an air cooler used for pump liquid supply type ammonia refrigerator, which solves the problem of no appropriate testing equipment on the refrigerant side of prior gravity liquid supply type and ammonia pump liquid supply type air coolers which are in great use. The invention is provided with a gas-liquid separator, a gas superheater, a gas communication pipe between the gas superheater and a low-pressure circulating liquid storage cylinder, a liquid communication pipe between the gas-liquid separator and the low-pressure circulating storage cylinder, a front pressure measuring point of a gas refrigerant flow meter, a front temperature measuring point of the gas refrigerant flow meter, a gas refrigerant flow measuring point, etc., and solves the test difficulty that the machine outlet is under the gas-liquid two-phase state of air coolers used for pump and gravity liquid supply type ammonia refrigerators; the invention is provided with a two-step compressor set low-temperature liquid subcooler, solves the subcooling difficulty of the low-temperature and low-pressure liquid refrigerant, and is applicable in testing of the air coolers used for pump and gravity liquid supply type ammonia refrigerators.

The invention discloses a multi-port differential transmission channel jitter test analysis method. The method comprises steps that s1, a detected member is connected with a multi-port vector networkanalyzer, and the multi-port vector network analyzer is calibrated; s2, the multi-port vector network analyzer is utilized to acquire an S parameter of the detected member; s3, the S parameter of thedetected member is converted into a mixed-mode S parameter; s4, the mixed-mode S parameter is converted into time domain impulse response; s5, a test code type signal is generated, convolution operation of the test code type signal and the time domain impulse response is carried out to acquire a response signal; jitter decomposition and analysis of the response signal are carried out to acquire ajitter index. Multi-port differential channel jitter analysis is carried out based on the vector network analyzer, a measurement error caused by clock synchronization among oscilloscope channels is reduced, and test difficulty caused by the limited number of oscilloscope ports is further avoided. The method is advantaged in that influence of the excitation signal error on the differential transmission channel jitter test can be avoided, and jitter test precision is improved.

Provided is a testing method of a phase shifting angle of a zigzag transformer. The testing method comprises the steps of enabling a B phase and a C phase of a primary side of the zigzag transformer to be in short circuit; adding alternating voltage between an A phase and the B phase; utilizing voltage meters to respectively measure the voltage between the A phase and the B phase of the primary side, the voltage between an a phase and a b phase of a secondary side and the voltage between the b phase and a c phase of the secondary side; calculating the phase change ratio of the voltage between the A phase and the B phase of the primary side to the voltage between the phase and the b phase of the secondary side; calculating the phase change ratio of the voltage between the A phase and the B phase of the primary side to the voltage between the b phase and the c phase of the secondary side; and finally solving the phase shifting angle beta of the zigzag transformer by means of the formula as followed. According to the testing method, the transformation ratio and the phase shifting angle of the zigzag transformer can be quickly and accurately measured by means of the reading of the two ordinary voltage meters and the formula, the problem troubling people for a long time caused by the testing of the zigzag transformer is solved well, and convenience is created for production, application and maintenance of the zigzag transformer.

The invention discloses a high-precision automatic transistor test parameter acquisition system which can be used for not only automatically acquiring and analyzing the pressure and temperature change of a transistor, but also testing the electric property of the transistor. The high-precision automatic transistor test parameter acquisition system comprises a servo motor force applying mechanism, a testing circuit, a constant-temperature heat radiation table, a temperature and pressure sensor, an information acquisition and comparison system, wherein temperature testing system control program software and man-machine interface software are both developed independently, and the problem that an existing thermal resistance testing device cannot automatically test and acquire the pressure of a transistor and the temperature of a transistor shell; the testing temperature of the temperature sensor within small area can meet the requirement on precision of 0.1 DEG C, and the difficulty in testing the surface temperature of the transistor shell is solved; the automatic pressure applying system consists of a pressure sensor, a buffer, a stepping microspur unit and a heat insulation device, and can ensure that in a pressure applying process, not only can the appearance of the transistor not be damaged and the device heating not be affected by a mechanism, but also pressure can be increased slowly with the precision of 0.1%.

The invention discloses a test method and system for a distributed system, electronic equipment and a storage medium, and relates to the field of financial science and technology, and the test method comprises the steps: initiating a transaction service, guiding the transaction service to a network service environment corresponding to a distributed anomaly simulator, injecting at least one preset fault to the network service environment, and transmitting the preset fault to the distributed anomaly simulator. The compensation operation of the sub-transaction is completed earlier than the forward operation, null rollback test operation is achieved, the sub-transaction refers to a certain sub-transaction in a distributed long transaction chain corresponding to a preset compensation mode used by the distributed system, and the compensation operation refers to operation triggered by transaction service abnormity caused by faults. The technical problem that the test accuracy is reduced due to the fact that the network service environment in which the compensation operation of the sub-transactions is earlier than the forward operation cannot be simulated in the related technology is solved.

The invention relates to a method for testing and calculating the aperture opening ratio of a sand prevention net based on optical projection. Since a warp knitting sand prevention net has irregular warp knitting holes, the aperture opening ratio can not be accurately measured by using a routine method. The method includes the steps of cutting a test sample, laying on a white panel, and taking a photo by using a gray-scale shooting mode, cutting a grey-scale map, adjusting the brightness to save the grey-scale map with highest pixel, graying the image and identifying the characteristic points of the grayed image based on the Harris operator, obtaining the characteristic points in the grayed image, calculating the mesh line area according to the characteristic points, and further obtaining the percentage of the mesh line area to total test area. The problem that the aperture opening ratio of a sand prevention net with an irregular pattern can be solved. The aperture opening ratio value of various sand prevention nets can be obtained accurately, which is of great importance to product quality examination and sand prevention effect.

The invention discloses a laser range extending method for testing the rigid opening speed and rigid closing speed of a high-voltage switch, and the method solves the problems of high precision and low measurement range of a laser speed measurement sensor, is realized by refitting the range extending method, and can realize large-range measurement while keeping high precision. Meanwhile, the non-contact measurement mode of the original laser speed measurement sensor is kept, the test problem under the condition that the speed measurement directions of the laser sensor and the high-voltage switch are inconsistent is further solved, and a powerful test tool is provided for the high-voltage switch.

The invention discloses a vehicle LNG gas cylinder multifunctional valve test system. The test system comprises a test tool, a multifunctional valve arranged on the test tool, a gas state test system for a gas state test of a corresponding valve port of the multifunctional valve, and a liquid state test system for a liquid state test of the valve port of the multifunctional valve, the gas state test system comprises a gas-inlet test pipeline and a gas-outlet test pipeline, the gas-inlet test pipeline is provided with a pressure-reducing valve, a safety valve, a plurality of stop valves, and a plurality of pressure gauges, the gas-inlet test pipeline is also communicated with a small gas cylinder via a small gas cylinder branch pipeline equipped with the stop valves, the gas-outlet test pipeline is provided with the pressure gauges and the stop valves, the liquid state test system comprises a liquid-inlet test pipeline and a liquid-outlet test pipeline, the liquid-inlet test pipeline is provided with the stop valves and the pressure gauges, and the liquid-outlet test pipeline is provided with the pressure gauges and the stop valves. According to the test system, various tests of different valves of the multifunctional valve can be conveniently accomplished.

The invention discloses a device and a method for measuring thermal resistance of a nucleating layer of a gallium nitride device based on picosecond laser. The device mainly comprises a heating and power measurement subsystem, a transient thermal response measurement subsystem, and a measurement guarantee subsystem, wherein the heating and power measurement subsystem comprises a picosecond laser heating module, an electrical heating module, and an electrical temperature detection module. The method adopts a structure function method to calculate the layered thermal resistance. The method comprises a picosecond laser heating step and an electrical heating step, wherein picosecond laser is used for heating a semiconductor device thin layer at first, then, an electrical acquisition mode is adopted for temperature measurement, and electrical heating and electrical detection modes are adopted for determining equivalent electrical heating power of laser heating. The problem that the thermal resistance of the nucleating layer of a gallium nitride HEMT device cannot be tested under the micrometer scale in the prior art is solved. A voltage and temperature calibration curve interpolation calculation mode is adopted, and the influence of parameter nonlinearity is avoided.

The invention provides a pre-existing crack offset three-point bending test device for testing fracture toughness of the II type crack. The device comprises a sample, a lower end clamp, an extensometer, a hammer, and support rollers. Two support rollers are horizontally placed on the lower end clamp and are on the same horizontal plane. The sample is supported on the support rollers, and is a rectangular parallelepiped. The support points of the two support rollers and the sample are symmetrical about the longitudinal central axis and 1.4W from the longitudinal central axis. The bottom surfaceof the sample is provided with two pointed bayonets and V-shaped open slots symmetric about the longitudinal central axis. The distance between the two pointed bayonets is the standard range of the extensometer. The sharp point of the bayonet on the left side is flush with the tip of the corresponding V-shaped open slot, and the tips of the V-shaped open slots are provided with pre-existing cracks. The V-shaped open slots are vertically upward, and are 0.7W from the longitudinal center axis. The pointed bayonets are 1W from the longitudinal center axis. The distance between the pre-existing crack center line and the support rolls on both sides is 1:3. The knife edge of the extensometer is clamped onto the two pointed bayonets. The hammer is placed on the top of the first sample and is inthe same vertical line with the pre-existing crack.

The invention relates to a testing method of a hole reinforcing material for a grout injection hole in a breaking roof of a coal mine. By adoption of the testing method, the performance testing of the hole reinforcing material for the grout injection hole in the breaking roof of coal mine can be effectively realized. The testing method adopting the technical scheme comprises the following steps: (1) filling broken coal-rock blocks; (2) connecting with a manual grout-injection pump; (3) injecting grout; and (4) pushing out, testing and recording a test piece. The testing method has the advantages that the simple and reasonable effects are achieved, the difficulty in laboratory testing on the performance of the hole reinforcing material of the grout injection hole in the breaking roof of the coal mine is effectively solved, the progress of research and development of the hole reinforcing material is greatly improved, and the cost is reduced, so that the testing method is an innovation on the testing method for the performance of the hole reinforcing material of the grouting hole in the breaking roof of the coal mine.

The invention belongs to the field of plasma heating and particularly relates to a high-power microwave polarization parameter measuring method. The method is characterized in that two directional couplers are calibrated, three transmission line square elbows are fixedly arranged by four circular waveguides, a polarizer is arranged on the first transmission line elbow, the two directional couplersare mounted on the second transmission line elbow and the third transmission line elbow, the two directional couplers are used for measuring polarization characteristics of microwaves after the microwaves are reflected by the polarizer, measured data are compared with theoretically calculated data, so whether the polarizer meets design requirements or not is checked. The method is advantaged in that a problem of testing the polarizer under the high-power condition is solved, and the method is provided for verifying whether the polarization characteristics of the polarizer conforms to the theoretical calculation result or not, and the method is simple, reliable and easy to operate.

The invention discloses a time synchronization monitoring test device and method. The device comprises a configuration module, an IEC 61850 client simulation module, an IEC 61850 server simulation module, a monitored equipment simulation module, a model verification module, an automatic mapping module, a dynamic operation verification module, a dynamic operation alarm module, a message monitoringmodule and a background flow generation module. The method can be used for testing the functional performance of the time synchronization monitoring system, checking whether various functions and performance indexes of the time synchronization monitoring system meet the standard requirements or not, checking the interoperability of communication between the time synchronization monitoring management and control platform and the main clock device, and providing technical support for the time synchronization monitoring system to access a power grid and reliably operate.

The invention provides a sensitivity measuring device and method applied to an ultra-wideband sampling receiver, wherein the device includes: a display unit, a control and a processor, a first frequency adjustable constant temperature crystal oscillator, a second frequency adjustable constant temperature crystal oscillator, a frequency difference Detection, emission timing formation circuit, ultra-wideband signal generation circuit, frequency band controller, amplitude controller, first AD acquisition circuit and second AD acquisition circuit, the method includes the following steps: S1, using a frequency-adjustable constant temperature crystal oscillator, respectively producing two S2, one of the square wave signals is directly transmitted to the receiver under test, and the other is used as a time reference, and is transmitted to the receiver under test after processing; S3, the receiver under test outputs an intermediate frequency signal, when the signal-to-noise ratio reaches 1 When :1, the amplitude of the currently injected UWB impulse pulse is the sensitivity value of the receiver under test. The invention solves the difficulty of measuring the sensitivity of the ultra-wideband sampling receiver, and has the advantages of simple operation and low cost.

The invention discloses an explosion field impulse and pneumatic pressure testing device, which comprises a force receiving module 1, a force measuring module 2 and a fixing module, and is characterized in that the force receiving module 1 is fixedly connected with the force measuring module 2 and is then installed on the fixing module 3, the intrinsic frequency of the device is determined according to frequency characteristics of blast waves of a tested explosion field, the force measuring module 2 outputs a voltage curve after the explosion field impulse and a pneumatic pressure load act on the force receiving module 1, and thus the impulse and the pneumatic pressure are obtained according to the sensitivity of the force measuring module 2. The explosion field impulse and pneumatic pressure testing device not only can test pneumatic pressure parameters of the explosion field, but also has an impulse testing ability, so that measurement for the impulse and the pneumatic pressure is completed simultaneously by one device, and the obtained data can provide data support for ammunition power evaluation and target vulnerability study.