以at89c52为控制内核，对锁具转动的循环次数计数，实时监测锁头运转位置和触点的电气导通性以保证循环耐久性试验可靠进行，并显示循环次数。
With AT89C52, the system can count the run times of the test and display it, monitor the lock head and connector in real time to make sure of its security.
结合一个液压试验台的设计实例，介绍了PLC控制器的触点的合理配置问题。
Rational contact configuration of PLC in hydraulic test platform design is introduced in this paper with an example.
用动态接触电阻测量系统进行了电磁继电器失效检测试验，监测了其触点闭合过程的接触压降。
The contacts voltage of counterpart contacts in the close course of electromagnetic relay is observed and recorded in its failure tests using dynamic contact resistance measurement system.
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