小型单片机可编程控制延时开关

Small Single Chip Programmable Control Delay Switch

在工程设计中，对于某一具体系统，通用型PLC控制系统不一定是最佳配置，常常造成资源的浪费。该文设计了一种小型的基于单片机的可编程控制延时开关．可控制0～250V，0～10A的负载。在电路中采用光耦隔离，避免外部干扰。通过USB接口下载程序，实现自定义延时开关、循环延时开关等功能。由于其成本低，性能稳定，所以应用广泛。

In engineering design,for a specific system,universal PLC control system,is not necessarily the best configuration,it cause the waste of resources usually.In this paper,the design of a small,based on single chip microcomputer programmable control delay switch,can control 0- 250V,0 to 10A load.In the circuit with optical coupling isolation,avoid external disturbance.Via USB download procedures,the real- ization of the custom delay switch,cycle time delay switch,ere.Due to low cost,stabLe performance,so widely used.