用一个中断例程实现多种类型传感器的抗干扰

Anti-jamming of Several Kinds of Sensor by One Interrupt Routine

传感器是智能仪器仪表中常见的输入源 ,采用简单电路实现这些输入时 ,输入端口上会产生干扰现象。因而 ,提出利用中断例程连续采样来判定输入值的方法 ,实现了传感器的抗干扰 ,指出了设计原则。同时 ,利用多精度中断的设计方法 。

A jamming often emerges on an input port designed by means of a simple circuit connected to an input device such as a sensor. In this paper,a method with some designedly principles is put forward, which is a software resolvent by way of an interrupt routine taking a sequence samples to implement anti-jamming function. Moreover, a way of multilevel interrupt, which can be geared to the needs of several kinds of sensor, is given. Meanwhile, examples within a system based on micro-controller AT89C52 are also given.