微机接口系统中的抗干扰措施

Anti-Interference Measures in Computer Interface System

微机接口系统设计的成功与否，很大程度上取决于抗干扰性能的优劣。尤其是工业生产过程控制和检测的应用场合，其周围环境比较恶劣，干扰源比较复杂，为了确保微机系统工作的可靠性，对干扰采取防护措施就显得十分重要了。在微机接口系统中，干扰途径主要有以下三种：电源干扰，地线和辐射干扰，I／O通道干扰。该文针对以上干扰源介绍几种实用的抗干扰措施。

Whether computer interface is designed successfully or not depends to a large degree on the performance of anti - interference, esp. in the case of application site of industrial production process control, where the surroundings are bad and interference sources are complex. In order to ensure the working reliability of the computer system, it is of vital importance to take protective measures.In the computer interface system, there exist three sources of interference; power interference, ground wire interference and channel interference. Several anti-interference measures are introduced in this essay.