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当前用于工业过程自动控制的可编程控制器(PLC)一般具有16路或32路输入,并且允许交流输入电压范围为24～120VAC。尽管某些简单电路(继电器用于电气隔离,再经过RC网络和施密特触发器处理后,为可编程控制器提供经过去抖的输入信号)能够消除这些信号的抖动,但是这种方法降低了实时数据处理的速度,而且这种方法产生的延时会随着继电器磨损和电容老化而变化。在PLC程序中,你可以为输入配置一个去抖动定时器,但这种技巧同样增加了程序扫描的时间,而且需要大量定时器。 (1)新型CMOS开关去抖器MAX6816
Current programmable controllers (PLCs) for industrial process automation typically have 16 or 32 inputs and allow AC input voltage range of 24 to 120 VAC. Although some simple circuits, which are used for electrical isolation when relays are processed by an RC network and a Schmitt trigger, provide the programmable controller with debounced input signals, the jitter of these signals can be eliminated, but this method reduces The speed of real-time data processing, and this method of delay will be as the relay wear and capacitance aging changes. In a PLC program, you can configure a de-jitter timer for the input, but this technique also increases the time it takes to scan the program and requires a large number of timers. (1) New CMOS Switch Debouncer MAX6816