Design of anti-insertion and reverse system of power module based on machine vision
In order to solve the electrical stress damage caused by the circuit plug against the module during the pow-er module test,this paper proposes a power module anti-plug back system based on machine vision technology.For the purpose of realizing the automatic test of the power module,image processing and visual recognition technology are used to help the power ATE test system find the problem of circuit plug back.And interrupt the test process in time to avoid electrical stress damage.The design takes the test fixture as the carrier,the image acquired by the CCD indus-trial camera is processed by the visual recognition software to be changed into the signal that can be recognized by the ATE test system,and the identified result signal is transmitted to the power supply ATE test system through serial communication,so as to complete the power module test workflow.The experimental results show that the design can accurately identify the placement direction of the power module and complete the electrical stress test.The running condition is stable and the operation is simple.It provides theoretical basis and practical guidance for the similar characteristics of the integrated circuit test.
万方数据
维普
