Method and realization of display information acquisition in black box cheating test of digital indicating weighing instruments

摘要

Software cheating has to be detected because it is almost impossible to get the source code to do white box analysis; hence, we usually have to do black box testing. The exhaustive method was used to find cheating code. Because there are various combinations of digits and artificial exhaustive method is a time-consuming operation, automated detection method must be adopted. Automatic digital indicating weighing instruments weight display information acquisition module is a key module in the process of automated testing. The module runs according to the characteristics of the LCD screen. With the check program from the upper computer program, the accuracy of the acquisition module can meet the test requirements.