11 results about "Standard test signal" patented technology

The invention provides a test method and a test system for a digital optical fiber repeater, an external signal source is not needed, the resource occupation is low, and the independent test of each part of the digital optical fiber repeater is supported, the test method comprises the following steps: a waveform data packet is pre-stored, and the waveform data packet comprises waveform data intercepted from a standard test signal; in response to the test instruction, performing signal reconstruction based on a pre-stored waveform data packet, and generating a test waveform conforming to a communication standard; outputting the test waveform to a radio frequency hardware link of the digital optical fiber repeater, processing the test waveform through the radio frequency hardware link, converting the test waveform into a testable radio frequency signal, and outputting the testable radio frequency signal; and demodulating the output radio frequency signal through the test equipment, and carrying out radio frequency parameter calibration.

The invention relates to the technical field of intelligent detection of board cards, in particular to a multichannel board card detection method and system, electronic equipment and a storage medium. The detection method comprises the following steps: inputting a standard test signal to each channel of the multi-channel board card in a normal environment, analyzing the output signal accuracy, the signal triggering time punctuality and the anti-crosstalk level of adjacent channel pairs, and judging the signal transmission performance; when the signal transmission performance is qualified, environments with different temperatures and vibration conditions are simulated, testing is repeated, performance data in the normal environment and performance data in the simulated environment are compared, and an applicable environment set is determined; and comparing with a corresponding allowed use environment set, and judging the environment adaptation performance. The anti-crosstalk capability quantitative detection and multi-environment adaptation evaluation of the multi-channel board card are realized, so that the signal independence of the multi-channel board card is ensured, the system operation stability is improved, and the reliability of the board card in a complex scene is ensured.

The present application relates to the technical field of intelligent detection of a board card, and relates to a multi-channel board card detection method, a system, an electronic device and a storage medium.The detection method comprises the following steps: inputting a standard test signal to each channel of a multi-channel board card in a normal environment, analyzing the accuracy of an output signal, the timing accuracy of a signal trigger time and the anti-crosstalk level of an adjacent channel pair, and determining signal transmission performance; when the signal transmission performance is qualified, simulating an environment with different temperatures and vibration conditions, repeatedly testing and comparing performance data in the normal and simulated environments, and determining an applicable environment set; and comparing the applicable environment set with a corresponding allowed use environment set to determine environmental adaptation performance.The present application realizes quantitative detection of the anti-crosstalk capability of a multi-channel board card and multi-environment adaptation evaluation, thereby ensuring the signal independence of the multi-channel board card, improving system operation stability, and ensuring the reliability of the board card in a complex scenario.

The application discloses a kind of active suspension system model parameter adaptive calibration test bench test method and system, belong to vehicle active suspension test technical field, sensitive system parameters are filtered out by sensitivity analysis function, then sensitive system parameters are identified and calibrated, greatly reduce the amount of calculation in calibration process, improve the test implementation efficiency;Through time delay boundary calculation, the time delay feedback coefficient and time delay are optimized, the optimal time delay feedback coefficient and optimal time delay are obtained, and through adaptive adjustment, time delay compensation calibration is carried out using Smith prediction compensation model, which significantly improves the adaptive ability and compensation accuracy of time-varying time delay;In addition, standard test signals are applied to the target active suspension test bench test system, and time domain response data are collected to determine the tolerance according to the time domain response data to complete the parameter adaptive calibration of the active suspension system dynamics model.

The invention discloses a multi-model chip open / short circuit and current testing system, and belongs to the technical field of semiconductor testing. The system comprises a main control module, a universal interface platform and a plurality of chip adaptation devices. The universal interface platform is provided with a plurality of standard test interfaces, the chip adapter devices are detachably installed on the universal interface platform, and each adapter device is specially used for adapting standard test signals to pins of chips of a specific model. The main control module performs open circuit, short circuit and current testing on chips connected to different adaptive devices through the architecture. By means of the modular design of the universal platform and the special adapter, multiple chips can be tested through one system, the problems that in the prior art, a special clamp is high in cost, low in test efficiency and tedious in model changing are solved, the test cost is remarkably reduced, and the test flexibility and throughput are improved.

The invention relates to an optical fiber link fault monitoring method and system of an AI data center and an optical module, and belongs to the technical field of optical communication, the method comprises the following steps: an upstream optical module is instructed to send a standard test signal to a downstream optical module, and the downstream optical module receives the standard test signal to obtain a data frame error symbol number which is less than or equal to a first early warning value; if so, judging whether the working parameters of the upstream and downstream optical modules are normal, if so, returning to the beginning, and if not, reporting a first monitoring alarm signal to a network management server; if the data frame error symbol number is gt; judging whether the working parameters of the upstream and downstream optical modules are normal or not according to the first early warning value; and the downstream optical module reports the first monitoring alarm signal to the network management server if the first monitoring alarm signal is abnormal, and reports the second monitoring alarm signal to the network management server if the second monitoring alarm signal is normal. According to the invention, the maintenance cost of the AI data center optical fiber network is reduced, the reliability of the optical network is improved, and the improvement of the working efficiency of the AI data center network is promoted.

The invention relates to the technical field of battery management, in particular to a lithium battery detection method and device based on charge and discharge curve analysis. The method comprises the following steps: carrying out a charge-discharge test on a target object based on a preset standard test signal to obtain first charge-discharge monitoring data; analyzing the first charge and discharge monitoring data based on a pre-constructed analysis model to obtain a quality detection result associated with the first charge and discharge monitoring data; in response to a predicted fault of which the probability index exceeds a preset fault probability threshold in the quality detection result, generating a characteristic excitation signal matched with the predicted fault; performing an excitation test on the target object based on the characteristic excitation signal to obtain second charging and discharging monitoring data; and performing verification analysis on the second charging and discharging monitoring data based on the analysis model, and updating the quality detection result according to the verification analysis result to obtain the verified and updated quality detection result. By adopting the method, the accuracy of battery detection can be improved.

The present invention discloses a radiation immunity test device and method for communication equipment, which belongs to the technical field of radiation immunity test, and includes a power monitoring device, a control device, a first antenna group, a second antenna group and an information analysis device; the control device is used to generate a modulation signal, adjust the communication signal transmitted by the information analysis device to obtain a standard communication signal, and filter out the test signal transmitted by the second antenna group to obtain a standard test signal; the power monitoring device adjusts the modulation signal transmitted by the control device to obtain an interference signal; the information analysis device obtains a real communication signal, analyzes the standard test signal to obtain a test result; the first antenna group generates an interference electromagnetic field in an anechoic chamber based on the interference signal transmitted by the power monitoring device; the second antenna group adjusts the interference electromagnetic field based on the standard communication signal to obtain a test electromagnetic field, and obtains a test signal of a device to be tested in the test electromagnetic field; the present invention significantly improves the accuracy of the test by simulating a real electromagnetic field and filtering out clutter signals.

The invention provides a dynamic debugging calibration system of an aero-engine telemetering system. The dynamic debugging calibration system comprises an aero-engine rotation simulation device; the rotating shaft is driven by the aero-engine rotation simulation device to rotate at a specific rotating speed; the rotating shaft is provided with a first end and a second end; the aero-engine telemetering system is arranged at the first end of the rotating shaft and is driven by the rotating shaft to rotate at a specific rotating speed; the slip ring device is arranged at the second end of the rotating shaft and is driven by the rotating shaft to rotate at a specific rotating speed; the slip ring device is electrically connected with the aero-engine telemetering system; wherein the slip ring device accesses a standard test signal and transmits the standard test signal to the aero-engine telemetering system; the aero-engine telemetry system outputs telemetry signals. According to the invention, dynamic debugging and calibration of the aero-engine telemetering system can be realized.

The application discloses a kind of video decoder board automatic aging test methods, by configuring RTSP camera output standard test signal, build decoding display link, using programmable power supply controller unified power supply and simulates power fluctuation, to PC end program realizes power control, data acquisition and analysis.System supports custom test duration and on-off cycle, can be unattended complete long time aging test, real-time acquisition and storage decoding stability, image quality and power consumption data, automatically generate visual chart and multi-format test report, according to preset threshold value automatically determine test result.At the same time have abnormal automatic identification, three alarms and fault power protection function, support breakpoint continue measurement.The method effectively improves the degree of automation and efficiency of aging test, reduces manual intervention, data precision is high, applicable to video decoder batch production quality inspection and research and development performance verification.

The invention relates to the technical field of electric power system operation and maintenance testing, in particular to a method, a system and a device for an up-current-free test of an electronic transformer acquisition unit, and the method comprises the steps: obtaining an analog quantity reference signal outputted by standard test signal generation equipment, and constructing an electromagnetic interference suppression and signal conditioning model; common-mode interference stripping and waveform reconstruction are carried out on analog quantity reference signals through the electromagnetic interference suppression and signal conditioning model, and a pure fundamental wave signal sequence is obtained; and triggering a protocol feature recognition logic based on the access state of the physical port, calling a preset protocol feature code library, and constructing a protocol layer interactive verification link. The method has the advantages that common-mode interference stripping and waveform reconstruction of analog quantity reference signals are achieved, a pure fundamental wave signal sequence is obtained, current rising operation limitation is avoided, the test scene building difficulty is lowered, and the signal distortion influence in the test process is reduced.