Testing device and testing method for testing circuit board quality in combined environment

Abstract

The invention provides a testing device for testing circuit board quality in a combined environment. The testing device comprises a testing box, an RF system which is connected with the sidewall of the housing of the testing box and transmits an electromagnetic wave into the testing box, a pulse voltage generating system which performs high-voltage electric discharging on a to-be-tested circuit board, a bracket for placing the to-be-tested circuit board, a power probe for measuring electromagnetic wave strength next to the to-be-tested circuit board, and a data processing system. The inventionsimultaneously provides a testing method for testing the circuit board quality in the combined environment, wherein the testing device is utilized in the testing method. The testing device and the testing method for testing the circuit board quality in the combined environment can realize quality testing on the circuit board on the conditions of different temperatures, RF interference and high electric field strength.

Description

technical field [0001] The invention relates to a testing device for circuit boards, in particular to an experimental device capable of evaluating the quality of circuit boards in a composite environment and a corresponding experimental method Background technique [0002] With the continuous improvement of rail transit capacity, EMUs, with their unique high speed, people choose more and more EMUs for travel. During the driving process of EMUs, the circuit boards of display system, broadcasting circuit and various other purposes are all In a complex electromagnetic environment, and all electronic equipment and control systems in each car of the EMU are installed in a centralized manner, resulting in local high temperature, these factors are the main factors that cause damage to the circuit board and lead to circuit failure. [0003] At present, the research on the influence of electromagnetic interference on the performance of various circuit boards is mainly to complete the...

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Problems solved by technology

[0003] At present, the research on the influence of electromagnetic interference on the performance of various circuit boards is mainly to complete the test through the authoritative experimental center. The test process is time-consuming and laborious. At the same time, the electromagnetic immunity test and the high-voltage damage test to electronic components are carried out separately, which cannot be effective. To evaluate the quality of products close to the actual working conditions of high-speed trains, there is an urgent need for an experimental device and corresponding experimental methods that can accurately and quickly measure the quality of various circuit boards of EMUs under working conditions

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