229results about How to "Flexible testing" patented technology

The invention relates to a frequency change system group delay test method which comprises the following steps of: generating an FM (Frequency Modulation) carrier signal of which the carrier frequency is the center frequency of a working frequency band of a frequency change system by a signal source; then dividing the signal into two paths, wherein one path of signal is input to the frequency change system by an attenuator and used as the input of a first A/D (Analog-to-Digital) converter by the attenuator after being output by the frequency change system, the other path of signal is used as the input of a second A/D converter, and the two A/D converters synchronously sample data by using the same reference clock; then respectively carrying out Hilbert transformation, digital down conversion and non-coherent demodulation on two paths of A/D sampled data; and carrying out digital phase comparison on the two paths of demodulated base band signals to obtain a group delay value of the frequency change system. A group delay test result of all frequency points of the frequency change system in the frequency band can be obtained by changing the carrier frequency of the FM carrier signal in the working bandwidth of the frequency change system and repeating the processing; and the measuring precision depends on system heat noise, the correcting precision of a test cable and A/D sampling resolution.

The invention relates to an MMC flexible direct-current control device testing system and method based on an RTDS. The MMC flexible direct-current control device testing system comprises a real-time emulation workstation (16) for building an MMC flexible direct-current system model, an RTDS real-time digital simulator PB5 processing board card (17), a real-time digital simulator GTFPGA processing board card (18), an analog quantity output board card (19), a digital quantity output board card (20), a digital quantity input board card (21), an MMC flexible direct-current valve level control device (22), an MMC flexible direct-current station level control device (23) and an MMC flexible direct-current system level control device (24). The testing system is flexible in test, accurate and effective, and the testing method is simple, practical, flexible and convenient to operate.

A Modeling, Design, Analysis, Simulation, and Evaluation (MDASE) aspects of gyrocompassing in relation to Far-Target Location (FTL) systems include a Gyrocompass Modeling and Simulation System (GMSS). The GMSS is a modularized software system which has four major components: the 6DOF Motion Simulator, the IMU Sensor Simulator, the Gyrocompass System and Calibration Process Simulator, the Gyrocompass System Evaluation and Analysis Module. Each module has one or two graphic user interfaces (GUIs) as user interfaces for simulation components selection and parameter setting. The realization of the GMSS is based on any computer platforms, for it is written in high level language and tools and is portable. The stochastic signal analysis and sensor testing and modeling tools includes a suite of generic statistical analysis software, including Allan Variance and PSD analysis tools, which are available to every GMSS module and greatly enhanced the system functionality.

The present application relates to the field of research and development management, in particular to an interface test method and device, a computer device and a storage medium for an automated switch mock baffle. The method comprises the following steps of intercepting a data acquisition request sent by a terminal, wherein the data acquisition request carries a first interface identifier; detecting whether the interface corresponding to the first interface identifier returns the data corresponding to the data acquisition request, and if not, identifying whether the current environment is a test environment; when the current environment is a test environment, querying the obtaining path of the test data corresponding to the first interface identifier from the test database; when the acquisition path is available, returning the test data obtained according to the acquisition path to the terminal. The method can realize the automatic switch of the mock baffle according to the return result of the data acquisition request, is more flexibly start the mock test, and ensures the accuracy of the returned data of the interface test.

The invention relates to a device for recognizing a human lower limbs movement posture by virtue of a combined sensor. The device comprises a data acquisition module, a signal conditioning module, a micro-controller module and a wireless communication transmission module, and further comprises a wireless communication receiving module and a posture analyzer, wherein the data acquisition module, the signal conditioning module, the micro-controller module and the wireless communication transmission module are sequentially connected by virtue of a lead wire, and the data acquisition module is used for acquiring a human lower limbs movement posture signal, the signal conditioning module is used for processing the data signal, the micro-controller module is used for controlling and coordinating the entire system and the wireless communication transmission module is used for transmitting data; the data acquisition module, the signal conditioning module, the micro-controller module and the wireless communication transmission module are respectively connected to a power module which is used for supplying power to the modules so that the modules can work normally by virtue of lead wires; the wireless communication receiving module is used for receiving the data; and the posture analyzer is connected to the wireless communication receiving module by virtue of a data line. The device disclosed by the invention is reliable to use, and is capable of acquiring human lower limbs movement posture information; and the device has the characteristics of being concise and convenient.

The invention discloses a locomotive display screen testing device and method. The locomotive display screen testing device is connected with a display screen and comprises a computer; the computer comprises an electronic cabinet simulation module, an LCU (logic control unit) simulation module, a locomotive-mounted information device simulation module, a fault isolation unit simulation module and a locomotive power supplying device simulation module; the computer is used for sending the simulated locomotive state information to a display screen through the electronic cabinet simulation module, the LCU simulation module, the locomotive-mounted information device simulation module, the fault isolation unit simulation module and the locomotive power supplying device simulation module and judging whether the communication and the data displaying of the display screen per se and the display screen and the modules are normal or not by detecting whether the display screen can communicate normally and displaying the locomotive state information from the computer correctly or not. Due to the adoption of the locomotive display screen testing device and method of the technical scheme, the display screen can be tested more comprehensively. In addition, the locomotive display screen testing device has higher performance-price ratio, can test more flexibly and is more convenient to use.

The invention discloses an optical module and an electric domain dispersion compensation method thereof. The optical module comprises an optical path assembly, a laser receiving unit, an EDC chip and a first MCU (microprogrammed control unit); the laser receiving unit receives a downlink optical signal sent from an optical fiber by the optical path assembly, converts the optical signal into an electrical signal and amplifies and outputs the electrical signal to the EDC chip; the EDC chip judges the time delay and distortion of the electrical signal outputted from the laser receiving unit and sends the judged time delay and distortion information to the first MCU; the first MCU computes a dispersion compensation value according to the received time delay and distortion information and outputs the value to the EDC chip; and the EDC chip performs electric domain dispersion compensation on the electrical signal outputted from the laser receiving unit according to the dispersion compensation value and outputs the electrical signal. The EDC chip is arranged in the optical module, and the electrical signal after the photoelectrical conversion is subjected to the electric domain dispersion compensation at the EDC chip in the optical module, so the dispersion compensation effect of the electrical signal is better.

The invention discloses a method for automatically testing a repeater based on an instrument control mode of a uniform interface. The method comprises an automatic instrument calibration process which comprises the following steps of: (1) initializing a signal source and a power meter; (2) zeroing and calibrating the power meter; (3) accessing the signal source and the power meter by a user; (4) switching an interface box; (5) circularly reading power according to certain frequency, calculating loss and store the loss into a file; and (6) judging whether a path is finished or not, if the path is finished, finishing the test, and if the path is not finished, returning to the step (2). The testing method also comprises a test plan customization process which comprises the following steps of: (1) newly establishing a test plan; (2) selecting the conventional test items into the test plan; (3) modifying parameter values of the test items; and (4) judging whether the test plan is finished or not, if the test plan is finished, storing the test plan, and if the test plan is not finished, returning to the step (1). By the method, artificial errors in the test process can be reduced, the admittance threshold for testers is low, and the product quality is conveniently managed and controlled by companies.

The invention discloses an automatic testing method based on a communication protocol of a temperature measuring device. The automatic testing method not only can expose errors of the communication protocol of terminal software rapidly, but also can generate more detailed testing report automatically. The defects of temperature-measuring terminal software can be accurately positioned by analyzing the testing report. The automatic testing method disclosed by the invention has the advantages that comprehensive inspection can be carried out in the whole process of the protocol of the temperature measuring device, and the testing efficiency is improved on the basis of saving the labor cost of the software of the testing terminal, so that the whole testing work can be optimized from the time and the resource.

The invention discloses a test method, network equipment and a test system of a load balancing function. The method comprises the following steps: connecting the entrances of test equipment and tested equipment in advance; selecting any two exits of the tested equipment and communicating the two exists; mutually setting the two exists to be the next hop of each other; receiving the data packets sent by the test equipment by the entrance of the tested equipment; distributing the data packets to two exists according to a load balancing strategy; recording the number of the received data packets; mutually forwarding the distributed data packets to each other by the two exists; discarding the data packets after receiving the data packets forwarded by the each other; recording the number of data packets received and sent by the exists; and determining whether the load balancing function of the tested equipment is in normal or not through respectively judging whether the number of the data packets received and sent by the two exists conforms to the data packet distribution proportion and the sum of the data packets is equal to the number of the data packets received by the entrance. Thetest method, network equipment and test system provided by the invention are simple and flexible to implement and have low cost.

The invention discloses a millimeter wave large-scale MIMO (Multiple Input Multiple Output) channel simulation system. The system comprises a shielding device, wherein a large-scale MIMO system, a MIMO channel simulator and a channel and equipment control device are arranged outside the shielding device; a three-dimensional spherical probe device is arranged in the shielding device; the large-scale MIMO system is connected with the MIMO channel simulator; the MIMO channel simulator is connected with the three-dimensional spherical probe device; and the channel and equipment control device communicates with the three-dimensional spherical probe device and the MIMO channel simulator respectively. A channel space mapping method is adopted to realize space separation and mapping of beam signals, and an antenna-based subchannel is mapped into a space angle direction-based subchannel, thereby reducing the number of analog subchannels, simplify a channel generation method at the same time, effectively reducing simulator resources and lowering the cost.

The invention discloses a propeller dynamic balance tester. The propeller dynamic balance tester comprises a base, supporting rods which are detachably arranged on the base, fixing brackets which are detachably connected onto the supporting rods, balance test assemblies which are arranged in the hollow structures of each fixing bracket, a balance connection mechanism which is erected on the balance test assemblies and is used for fixing a propeller to be tested; the positions of the fixing brackets on the supporting rods are adjustable; and one end of the balance connection mechanism is provided with a diameter-variable ring; and in a test, the propeller hub hollow part of a self-locking type propeller sleeves the diameter-variable ring. With the propeller dynamic balance tester adopted, the self-locking type propeller can be tested. The propeller dynamic balance tester has the advantages of simple structure and low cost.

The invention relates to a cross section measurement method for the fiber volume fraction of steel fiber concrete. The method comprises the following steps of: establishing a regression formula of the volume fraction of steel fibers and the number of the steel fibers on the cross section area of the steel fiber concrete, which is determined by a cross section method; collecting a test piece on site or manufacturing the test piece on site or indoors, and rupturing the test piece through a splitting test or a bending tensile test; measuring the number of the steel fibers on two cross sections, and taking the average value of the number of the steel fibers on the two cross sections as the number of the steel fibers on the cross section of the test piece; and substituting the measured number of the steel fibers into the regression formula to deduce the volume fraction of the steel fibers. By the method, the volume fraction can be tested at any position on a construction site, and the tested concrete can be non-poured concrete or cured concrete. The method contributes to the quality inspection of a steel fiber concrete mixture, is suitable for the quality accident reason analysis and project acceptance of the cured concrete, and is low in test cost, a test instrument is simple, and test flexibility is achieved.

Embodiments of the invention disclose an application test method, apparatus and device. The method comprises the steps of obtaining a first quantity of test accounts according to a quantity of test users testing a to-be-tested application; by utilizing the test accounts, submitting a test request to an application server of the to-be-tested application; and obtaining test invitation information fed back to the test accounts by the application server. Installation information of the to-be-tested application can be extracted from the test invitation information, and the installation informationis sent to a first user end to test the to-be-tested application.

The invention discloses a test method and terminal equipment. The test method comprises the following steps: the terminal equipment determines a test node which executes a test function corresponding to each processing step and obtains the information of each test node according to processing steps contained in the business flow of a tested source code; the terminal equipment generates the information of each test node into a test use case according to the business flow of the tested source code; and the terminal equipment tests the tested source code according to the test case. Through the test method and the terminal equipment, the same test node can be used in different test use cases, and the test use cases can be flexibly configured by the test nodes.

The invention belongs to the field of electric vehicles, particularly relates to a fatigue tester for a motor of an electric vehicle. The fatigue tester for the motor of the electric vehicle comprises a pedestal for supporting the tester; and the fatigue tester is characterized in that two ends of an upper surface of the pedestal are provided with supporting seats, the left supporting seat supports one end of the to-be-tested motor, the right supporting seat is connected with a rotating shaft of a direct current generator, the to-be-tested motor and the direct current generator are interconnected through a coupler, the pedestal is internally provided with a driving power supply for driving the to-be-tested motor to work, and an output end of the direct current motor is connected with a load through two leads. The fatigue tester has the following benefits that: the fatigue tester for the motor of the bicycle makes the test convenient and flexible, and the fatigue tester for the motor of the bicycle has simple structure and low cost, so that manufacturing difficulty is reduced, mass production is convenient, energy consumption is reduced, and test cost is reduced effectively.

The invention relates to a system for realizing a chip testing, comprising: a simulation IP module used for carrying out a simulation IP test; the digital module that is connected with the analog IP module and is used for testing internal communication signals; the input/output unit library that is connected with the array module and is used for packaging connecting wires; and the test module thatis connected with the analog IP module, the digital module and the input/output unit library and is used for testing the chip. The invention also relates to a method for realizing the chip testing. The system and the method for realizing the chip testing are adopted; under the condition that the number of pins used by the chip is minimum, the problem of errors of DFT related tools is solved, various tests of the chip are realized, test pins do not need to be added, so that the area of the chip is reduced as much as possible, the cost is controlled, the test becomes more flexible, the whole chip can be controlled through input of individual pins, requirements on a test board card of a test machine are correspondingly reduced, the interface is simple, and the cost is reduced.

The invention discloses a voice recognition testing device needing no interface, a voice recognition testing system needing no interface and a voice recognition testing method needing no interface. The device comprises a sound source and a second platform for placing an intelligent terminal to be tested, and further comprises a character recognition device, the character recognition device comprises a camera, the camera is arranged at the position in front of or above a screen of the intelligent terminal to be tested placed by the second platform, and the sound source and the character recognition device are connected with a testing platform. For the voice recognition testing device needing no interface, the voice recognition testing system needing no interface and the voice recognition testing method needing no interface, without a voice recognition testing interface on the intelligent terminal device, a voice recognition result for the intelligent terminal to be tested obtained by carrying out character recognition on the voice recognition result displayed by a screen of the intelligent terminal to be tested and shot by the camera through the character recognition device can be compared with characters corresponding to testing voice played through a sound source, thus the relevant performance index for voice recognition is counted, the repeatability is good, the usability ishigh, the universality is excellent, and thus the efficiency of voice recognition performance testing of the intelligent terminal is effectively promoted.

The invention discloses a closed-loop testing system and a closed-loop testing method for an excitation and packet switching system (PSS) control device of a synchronous generator. The closed-loop testing system comprises a real-time simulation work station, a real time digital system (RTDS), an analog output board card, a power amplifier, an excitation and PSS control device and a digital output board card, wherein the real-time simulation work station is connected with the RTDS; the RTDS transmits current and voltage signals to the excitation and PSS control device through the analog output board card and the power amplifier; the RTDS transmits a grid-connected circuit breaker switching signal of the synchronous generator to the excitation and PSS control device through the digital output board card; and the excitation and PSS control device transmits a pulse trigger signal of a six-pulse rectifier bridge to the RTDS through the digital output board card. The self-parallel excitation closed-loop testing system for the excitation and PSS control device of the synchronous generator is flexible in testing and can perform multiple types of tests.