491results about How to "Reduce the difficulty of testing" patented technology

An accurate calibration method of micro inertia measuring unit by decoupling erection error angle (EEA)with scale factor includes setting up MIMU integral error model and separating couple between EEA of accelerometer and gyroscope and scale factor ,using position error canceling method to calculate out and to separate out scale factor and EEA of accelerometer as well as using least square method and iteration method to calculate out EEA of gyroscope and its relative error items in 10 position static calibration test and in 3 direction positive and negative rate test ,then using interpolation method to calculate out scale factor of gyroscope .

The invention provides a method and a device for evaluating the life of a product. The method comprises the following steps of: determining key devices of a complete machine equipment product; performing an accelerated life test on each key device, and obtaining the corresponding life characteristic according to accelerated life test data; and evaluating the life of the complete machine equipment product according to the life characteristic of each key device. By the method and the device, time for evaluating the life of the product can be shortened, and the cost of evaluating the life of the product can be reduced.

The invention discloses an automatic television circuit board function testing method and an automatic television circuit board function testing system. The system consists of a test board for arranging a television circuit board to be tested, a signal conversion and controller module, a control computer and a signal generator which are sequentially connected, wherein the output end of the signalgenerator is connected with the input end of the test board. In the method and the system, test data is transmitted to a computer for comparison test in a network transmission way by adopting a conventional television scheme with network and high-definition multimedia interface (HDMI) functions in combination with a signal conversion and control system consisting of a micro control unit (MCU) to cancel an image acquisition card and save test cost. The scheme provided by the invention supports multi-path HDMI input and further supports the simultaneous test of a plurality of platforms without additional system platforms, so system test difficulties and system cost are reduced.

The invention discloses a sound field analysis system and a sound field analysis method. The sound field analysis method comprises the following steps of: adjusting position and focal distance of a camera, so that a photographed image comprises an area to be measured, photographing an image as a background image, and saving the background image in an upper computer; fixing three light sources to three angles of an acoustic sensor array, connecting the acoustic sensor array to a data acquisition instrument, and filtering to make colors of the light sources prominent in the image photographed by the camera; fixing the acoustic sensor array nearby the surface of the area to be measured, photographing and recording a position image of the array through the camera, and recording an acoustic signal through the data acquisition instrument; processing the photographed image after measurement is ended, obtaining positions of the light sources in the image, obtaining an area covered by the array, reconstructing a sound field in the area covered by the array by employing a near-field acoustic holography method, acquiring acoustic physical quantity information, superposing a sound field result to an area which corresponds to the image and combining the image and the background image for output according to the position determined by an image recognition result, and acquiring a sound field cloud picture. The sound field analysis method has the advantages of simplicity in measurement and high efficiency.

The invention relates to an antenna directional pattern testing method based on spherical surface near-field scanning extrapolation. Through near field testing, a far-field directional pattern can be obtained by subjecting obtained data to arithmetic extrapolation, so the testing distance is reduced and plane wave conditions required by cylindrical wave test are not required. A three-dimensional direction pattern obtained finally can analyze performance of an antenna more clearly and visually, and has great engineering practical value. The testing method can realize effective close-range antenna testing, saves testing cost, lowers testing difficulty, and meanwhile aims to obtain the three-dimensional direction pattern of a tested antenna so as to analyze performance of the antenna more accurately.

The invention discloses a method for testing a space radio frequency performance OTA of multi-antenna device. The method comprises the following steps of: resetting the parameters of a channel simulator for simulating a space channel by the performance parameters of each antenna of a detected device obtained through the existing darkroom measurement method; using the reset channel simulator to complete the linkage simulation or the linkage testing of the detected device to finally obtain an OTA testing result of the detected device. The invention further discloses a system for testing space radio frequency performance of multi-antenna device. A new idea for realizing the OTA testing of a MIMO system or a MIMO terminal in two stages through successive steps is offered; the testing can be completed by using a traditional darkroom without reforming; and the testing is low in difficulty and easy to realize.

The invention provides a pulse modulation signal phase noise measuring device. The pulse modulation signal phase noise measuring device comprises a down conversion and orthogonal phase discrimination arithmetic unit, wherein the down conversion and orthogonal phase discrimination arithmetic unit comprises a down conversion unit, an orthogonal phase discrimination unit and a sampling arithmetic unit, which are sequentially arranged from an input end to an output end, the down conversion unit comprises a local oscillator, a frequency mixer, a tunable band pass filter and a primary low noise amplification unit, the orthogonal phase discrimination unit comprises a phase discriminator, a low pass filter, a secondary low noise amplification unit, a loop filter and a reference source, the sampling arithmetic unit comprises an A/D (analog to digital) sampling unit and an analysis and arithmetic unit, and a phase noise measuring result is obtained after an output signal of the orthogonal phase discrimination unit passes through the A/D sampling unit and the analysis and arithmetic unit. The pulse modulation signal phase noise measuring device decreases numbers of needed test instruments and electric cables, simplifies measurement steps, and reduces test difficulty.

The invention relates to the technical field of communication, in particular to a method and device for testing performance of an AC. The method and device are used for solving the problems that in the prior art, a large amount of manpower and a large number of material resources are consumed by a mode for testing of the performance of the AC, and difficulty in meeting the testing requirement is high. The method for testing the performance of the AC comprises the steps that a plurality of virtual hosts are established, wherein each virtual host serves as a virtual AP or a virtual STA, and each virtual host comprises a virtual network interface card and a virtual host thread; the performance of the AC is tested through information transmission between at least one virtual AP and the AC and information transmission between at least one virtual STA and the AC. By the adoption of the method and device for testing the performance of the AC, due to the facts that the virtual APs and the virtual STAs can be established on only one PC, and real APs and real STAs are replaced with the virtual APs and the virtual STAs, a large amount of manpower and a large number of financial resources can be saved, and the test difficulty can be greatly reduced.

The invention discloses an ultraviolet illumination DIC (digital image correction)-based mechanical property loading measuring system and method for a high-temperature material. The measuring system is characterized by comprising the following steps: projecting an ultraviolet light source on the surface of a to-be-measured sample which is in a set temperature environment and in a set loaded state; and collecting images of the surface of the to-be-measured sample by using an ultraviolet sensitive image collection module to acquire collection images on the surface of the to-be-measured sample, corresponding to different temperatures, moments and loading forces, and carrying out DIC image processing on the collected images to acquire full-field thermal deformation information of the surface of the to-be-measured sample. The system and the method disclosed by the invention can be used for effectively achieving the non-contacted measurement of full-field strain of the material with the temperature being over 1000 DEG C.

The invention provides a test method and device, a computer system and a medium. The test method is applied to a test server. The test server is in communicated connection with at least one test equipment, the test server can control remotely the at least one test equipment, and the test server has an STF test platform built based on an STF mobile phone management frame and an analog manual clicktool. The method comprises steps of receiving a first request instruction, wherein the first request instruction comprises test application information, and the test application information is used for determining a test application packet; in response to receive of the first request instruction, acquiring the test application packet according to the test application information, wherein the testapplication packet comprises a test application installation packet; testing in the at least one test equipment by using the test application packet with at least the analog manual click tool based ona preset test manner, so as to obtain a test result; and sending the test result.

The invention discloses a surface plasma resonance sensor based on quantum weak measurement and a method for measuring refractive index of a metal surface medium. By arranging an appropriate polarization preparation device and a polarization selector, light beam polarization reflected by prism-metallic film-sample interface and the polarization set by the polarization selector are nearly orthogonal, and light intensity obtained by quantum weak measurement amplification effect is used to obtain the refractive index of a sample. The surface plasma resonance sensor is based on a quantum weak measurement technology, has strong inhibition effect for ambient noise and technique noise, and can realize high precision measurement on change of the refractive index of the sample under a natural state, is hopeful for real-time detection and analysis of molecule interacting on ultra-Low concentration and even few molecule layers, and has important application values on multiple technical fields such as biomedicine, life sciences, analytical chemistry, physical sciences, and materials science.

The invention relates to a method for measuring a circular polarization antenna axial ratio by utilizing a linear polarization antenna. The method is characterized in that the linear polarization antenna with a known polarization direction is selected to be an auxiliary antenna in a microwave unreflected chamber, polarization states of the linear polarization antenna are sequentially enabled to be the same with four polarization directions of x, y, u and v, the antenna directional graph measuring is carried out on a to-be-measured circular polarization antenna in four polarization states of the auxiliary antenna, radiation values of Ex (theta), Ey (theta), Eu (theta), Ev (theta) of the to-be-measured antenna are obtained, an inclination angle of the to-be-measured circular antenna is calculated, and an axial ratio AR (theta) of the to-be-measured polarization antenna is obtained. According to the method, a linear polarized horn antenna is adopted to be the auxiliary antenna, the polarization direction of the linear polarized horn antenna is easily determined, the measuring time is reduced, and the test difficulty is lowered; and the auxiliary antenna is in a static state, so that the affects from uncontrollable factors are reduced, and the obtained information of the circular polarization antenna axial ratio is enabled to be realer and more reliable.

The invention provides a base station physical layer test method. The method comprises the following steps: a test script is configured according to configuration parameter; state setting is performed on the base station physical layer according to the test script and then data scheduling is performed; encoded and decoded data generated by the base station physical layer is read; and performance indexes of the base station physical layer are detected according to the encoded and decoded data. Meanwhile, a base station physical layer test system is provided. According to the invention, an independent physical layer test board does not need to be developed, so the process of troublesomely coordinating mobile terminals, the physical layer test board and the base station upper-layer protocol software can be omitted, so that the test steps can be simplifies and the test difficulty can be reduced.

The embodiment of the invention provides a performance test method and device and a computer readable storage medium. The method comprises the steps that a server receives a test trigger instruction,wherein the test trigger instruction comprises a to-be-tested application identifier; the server generates a to-be-tested application program installation package according to the to-be-tested application program identifier; the server sends the to-be-tested application program installation package to the test terminal; the test terminal automatically installs the to-be-tested application installation package through the automatic test tool to obtain a to-be-tested application; the test terminal automatically tests the to-be-tested application program through an automatic test tool to obtain test result data; and the test terminal returns test result data to the server. According to the performance test method provided by the embodiment of the invention, the server and the test terminal automatically generate the to-be-tested application program installation package and acquire the test result data of the to-be-tested application program, and the whole test process does not need participation of testers, so that the test process is greatly simplified, and the test efficiency is improved.

The invention discloses a method for testing fault modes of an integrated switching current circuit. The method includes the following steps: S1, establishing a switching current test circuit, and applying an excitation signal to the test circuit, S2, defining the fault modes of the switching current circuit, S3, collecting testable node time-domain response signals of the switching current circuit, S4, preprocessing time-domain response data, calculating fault characteristic parameters of the signals, extracting information entropy and kurtosis of the signals, and calculating a fuzzy set of the information entropy, and S5, constructing a neural network classifier according to the information entropy and the kurtosis, and acquiring the fault modes of the switching current test circuit. The method for testing the fault modes of the integrated switching current circuit is suitable for tests on a large-scale and complicated integrated switching current circuit with a large number of fault categories and is high in accuracy rate of fault diagnosis.

The invention discloses a fan-shaped door mechanism and its driving mechanism. The fan-shaped door mechanism has a base, a fan-shaped door arranged on the base, a gear assembly and a fan-shaped door connecting rod assembly. The fan-shaped door includes an outer door, an inner door and connecting Assemblies, the inner door is movably nested with the outer door through the connecting assembly; the gear assembly includes the upper gear, the lower gear and the upper gear connection assembly, the upper gear is movably connected with the outer door through the upper gear connection assembly, and the upper gear and the lower gear are connected to each other. meshing; one end of the fan-shaped door connecting rod is connected with the upper gear, and the other end is connected with the inner leaf door, and the inner leaf door enters and exits in the outer leaf door under the action of the fan-shaped door connecting rod assembly. The invention has simple structure, easy assembly, high production efficiency, does not occupy space other than the swing rod, improves the overall aesthetics of the gate unit, and enables the movement to be used in various gates; maintains the structure of the swing rod root It is not damaged, which ensures the stability of the important part of the movement structure - the swing rod.

The invention discloses a service testing method and device of an online bank adapter, a service testing method and device of an ERP system and a service testing device of a bank and enterprise docking system. The service testing method of the online bank adapter comprises the steps of simulating a working mode of an ERP system and sending a service request message to the online bank adapter; simulating a working mode of a bank front-end processor, receiving a converted request message and returning a bank response message generated after correctness verification to the online bank adapter; and comparing the converted response message returned by the online bank adapter with a standard online bank adapter message in a message library, carrying out correctness verification and finishing the testing thread. Through the technical scheme, the bank and enterprise docking system can be tested when the bank front-end processor is not in place, the testing difficulty is reduced, and automatic and batch testing is realized.

Disclosed is a device logic control method based on a programmable logic controller (PLC)/distributed control system (DCS). The method includes the steps that (1) device information is collected; (2) on-site devices are classified, and a device class library is established; (3) a logic control principle diagram of each class of devices is designed, and a logic control principle diagram library is established; (4) a logic control module of each class of devices is developed on a selected PLC/DCS platform, and a logic control module library is established; (5) on-site device information is collected, and logic control over each on-site device can be finished respectively by the logic control module of each on-site device through calling of the logic control modules of device classes. By means of the device logic control method based on the PLC/DCS, program development is accelerated, the difficulty of device logic control, program development, program testing and on-site debugging is reduced, engineering experience accumulation is facilitated, the requirement for electric professional skills of program developers is lowered, and the number of participating professional staff is decreased.

The invention discloses a bidirectional penetration model testing device suitable for soil-rock slopes. The bidirectional penetration model testing device comprises a slope deposit, water penetration pipes, cover plates, a water source, a deformable water permeable bearing pad body, a water permeable support body, pore pressure gauges and inclinometer tubes, wherein the slope deposit is obliquely arranged and has two upper oblique side surfaces of water penetration surfaces; the water penetration pipes are positioned above the water penetration surfaces of the slope deposit; the cover plates are positioned above the water penetration pipes, made of transparent materials and used for sealing penetration water; the water source is connected with the water penetration pipes the deformable water permeable bearing pad body is opposite to the water penetration surfaces of the slope deposit and positioned below the slope deposit; the water permeable support body is positioned below a deformable water permeable layer and used for supporting the slope deposit; the pore pressure gauges are buried in the slope deposit; the inclinometer tubes are used for enabling a probe of an inclinometer to get in and out. The long slope surface in the slope deposit forms an angle of 20-45 degrees with the ground, and the water penetration pipes which are horizontally arranged are respectively designed with a plurality of water penetration holes. The bidirectional penetration model testing device can truly simulate the effective stress and the water pressure in a slope body of a soil-rock slope under the synergy of penetration along the slope direction and the penetration which is vertical to the slope surface according to an amplification ratio, and solve the difficult that a general geotechnical model is difficult to simultaneously meet geometric similarity and physical similarity.

The invention relates to a test device in the field of automobiles and aims at providing a novel device and a novel method for testing an ESP/ABS (Electronic Stability Program/Anti-lock Brake System) energy accumulator. The device comprises an ESP/ABS to-be-tested piece positioned in a test loop, wherein the test loop comprises a hydraulic steel cylinder connected with a reciprocating apparatus, a proportional valve, a pressure sensor, a displacement sensor and an industrial personal computer. According to the device and the method, an assembly is not required to serve as a test piece, equipment required for test is simplified or omitted by virtue of a pneumatic control liquid, and the increase/decrease of the hydraulic pressure of an automobile brake loop can be simulated, so that the test environment and actual use operating condition of the ESP/ABS to-be-tested piece are more approximate. According to the device and the method, by virtue of performing the PV performance curve and endurance test of the energy accumulator, the performance of the ESP/ABS energy accumulator is directly, accurately and rapidly tested, and the failure risk can be predicated in advance and reduced.

The invention discloses a battery status of health judgment method and device. The method includes the following steps that: the electrochemical impedance of a new battery at one or a plurality of characteristic frequency points and characteristic frequency sites are acquired, wherein the characteristic frequency points can reflect the internal state of the battery; an old battery is excited according to characteristic frequencies corresponding to the characteristic frequency points of the new battery, so that the current electrochemical impedance of the old battery can be determined; and theelectrochemical imaginary part impedance of the new battery and the old battery at the characteristic frequency sites are compared with each other, so that the aging degree of the old battery can be judged. According to the prior art, the aging condition of an electrochemical reaction inside a battery can be hardly embodied, and the aging conditions of the external characteristics of the battery are just embodied, with the method and device of the invention adopted, high test difficulty, high cost, short service lives and other defects in the prior art can be eliminated. The battery status ofhealth judgment method and device have the advantages of low test difficulty, low cost and long service life.

The invention discloses a method for establishing a maritime distress target wind-drift model based on multi-source data. The method comprises the steps that S10, a maritime test range is designed, and a stereo observation network is established; S20, an unpowered floater is released in the range, and the drift velocity of the floater is calculated, wherein power factors of a sea area nearby the floater are continuously tracked and observed in a first time period of a test; S30, multi-source observation data is assimilated, a marine meteorology and power data reanalysis field with a high spatial-temporal resolution in a sea trial area is constructed in combination with a numerical simulation technology, and the wind-caused drift velocity of the maritime floater is decomposed; S40, on the basis of a wind-drift model fitting relation, displacement of the floater per unit time step is simulated, and a genetic algorithm is introduced to perform optimal solving on fitting wind-drift coefficients; and S50, a wind-caused drift forward vector diagram of the floater is drawn, and a relational model of motion characteristics of the maritime floater and maritime wind pressure is obtained. Through the method, continuous tracking and observation on an experiment target during sea trial are avoided, and test difficulty and cost are effectively lowered.

The invention relates to a VDMOS (Vertical Double-diffusing Metal-Oxide-Semiconductor) transistor testing structure which belongs to the technical field of semiconductors and comprises a semiconductor substrate, an epitaxial layer, a first source doping region, a second source doping region, a channel region and an interlevel dielectric layer, a metal layer covering the upper surface of the semiconductor substrate and used for leading out two source electrodes and grid electrodes and a back metal layer covering the bottom surface of the semiconductor substrate, wherein the channel region positioned below the source doping region is mutually separated to form double channels, and the source electrode positioned on the surface of the epitaxial layer is mutually cut off to be respectively used as a test source electrode and a test drain electrode. Under the control of the voltage of the grid electrode, the test is carried out by using the test source electrode and the test drain electrode as output electrodes, the invention effectively realizes that the on resistance of the VDMOS transistor is tested, overcomes the difficulty of superficial characteristics after grinding and unifies the test program, thereby further lowering the maintenance and development cost, and improving the product test and feedback efficiency.

The invention relates to the field of intelligent driving, and provides a driving assistance function calling device and method. The device includes an environment information collection module, a vehicle information collection module, a signal processing module, a storage module, a comparison module and a function calling module. The device is capable of collecting information of the surroundingenvironment and information of vehicles, and comparing with preset application scenarios to determine a current application scenario, calling a driving assistance function suitable for the current application scenario and assisting the driver in driving. The driving assistance function calling device and method combine the driving assistance function that can be only used in a limited scenario through a calling relation, and reuses a volume production function so as to effectively improve the reliability of the automatic driving system and expand the application range of the driving assistancesystem.