Abstract:

Diode in the production process is key to the detecting section. The traditional diode test equipment although has a certain degree of intelligence, to qualified products, but to detect data cannot be collected and stored. The 700 series diode Tester is a universal production test equipment, which tests all the commonly used diodes, but these problems also exist, therefore, to be transformed for its farreaching significance. The transformation of the underlying CPU board, for its extension, uses the RS232 communication interface MAX232 chips as shifters, and adopts highspeed optocoupler 6N137 chips as insulation components to realize hardware functionality; at the same time, prepares the data acquisition and processing software, diode test data collection, storage, and statistical analysis to provide the technical basis for production decision. The data acquisition and transmission distance can be determined according to the situation. To proximity, the direct use of RS232 data cable for data transmission is feasible. On the other hand, you can convert using RS485/422.

Key words: diode examination machine;RS232;data sampling