A time-domain test method for cable conduction susceptibility using multi-gaussian pulses

Abstract

The invention relates to a cable conduction sensitivity time domain test method by using a multi-Gaussian pulse. The method particularly comprises the following steps: 1, a multi-Gaussian pulse spectrum is analyzed; 2, a sensitive frequency point positioning process is designed; and 3, LABVIEW is used to realize the positioning process. The invention also discloses a cable conduction sensitivity time domain test system to which the method is applied. The system comprises four parts of a time domain pulse shaping module, an injection probe module, a sample and a signal monitoring and data processing module. The method has the advantages that the complex electromagnetic environment that the device faces in actual work can be well simulated; the possible existence form of interference signals can be reflected comprehensively; the multi-Gaussian pulse belongs to a wideband time domain signal, the test spectrum is wide, the test efficiency is high, and the sensitive frequency point distribution condition of the sample can be checked relatively comprehensively; automatic test is realized through the LABVIEW, and the operation is simpler; and the test efficiency is greatly improved, and the test time is saved.

Description

technical field [0001] The invention relates to a time-domain test method for cable conduction sensitivity using multi-Gaussian pulses, belonging to the field of electromagnetic susceptibility testing. The time-domain test of cable conduction sensitivity uses multi-Gaussian pulses as broadband time-domain test signals, selects a variety of multi-Gaussian pulses to inject into the tested product, and uses the diversity of its spectrum to measure the sensitive frequency points of the tested product, which greatly improves The test efficiency has broad application prospects. Background technique [0002] Cable conduction sensitivity test plays a key role in electromagnetic compatibility test. In a large and complex electronic system, there are a large number of cables, various types, and wide distribution. Therefore, various cables will pick up electromagnetic energy from the actual working environment. When the external electromagnetic field irradiates the cables, the cables ...

AI Technical Summary

Problems solved by technology

The above-mentioned cable conduction susceptibility test method is gradually unable to meet the electromagnetic compatibility test requirements of large and complex equipment in terms of efficiency and not changing the state of the tested product.

For example, when implementing a frequency-domain scanning sensitivity test, if the test is carried out in strict accordance with the test frequency band, step requirements and test steps specified in the national military standard at the equipment sub-system level, a single test often takes 1 to 2 hours

Using this experiment to test devices containing a large number of complex cables will consume incalculable time costs and greatly delay the development cycle of equipment

At the same time, in the existing test, the CS114 injection signal is a single frequency point, and the tested product is tested by frequency domain scanning, so that it is difficult to detect whether there are sensitive frequency points in the frequency band between adjacent test frequency points, and there may be Leakage point situation

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