摘要
为了提高微机过程控制系统的可靠性，保证长期稳定运行，对系统中可能出现的电网干扰、信号线干扰和地线干扰等进行了讨论，并提出了相应的软硬抗干扰措施．
In order to increase the reliability of computer control system and ensure steady operation permanently, the disturbances which come from electric net, signal lines and ground lines ane discussed, and the measures to eliminate the disturbances are presented.
