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本文主要探讨和研究了工业控制计算机系统的抗干扰设计,从硬件和软件两方面对干扰的形成、抗防方法作了详细的说明,并给出了具体的设计实现方法。 (1)硬件的抗干扰设计。①接地:在设计中将接地和屏蔽正确地结合使用。②屏蔽:一是采用屏蔽设计即静电屏蔽、磁屏蔽、电磁屏蔽;二是布线要合理,布线要做到把交流和直流线、强电和弱电线、不同电流等级线、输入和输出线严格分开;使用双绞线和屏蔽电缆防止耦合干扰。③隔离:采用隔离变压器、扼流圈、同轴线、光耦合器等器件。④滤波:在电网和工控机系统之间
This article mainly discusses and studies the anti-jamming design of industrial control computer system, elaborates the formation of the interference from both the hardware and software, and the anti-prevention methods, and gives the specific design and implementation methods. (1) hardware anti-jamming design. ① Grounding: Grounding and shielding in the design of the correct combination of use. Shielding: First, the use of shielding design that is static shielding, magnetic shielding, electromagnetic shielding; Second, the wiring should be reasonable, the wiring to be AC and DC lines, strong and weak wires, different current levels, input and output lines strictly Separate; use twisted pair and shielded cables to prevent coupling interference. ③ isolation: the use of isolation transformers, chokes, coaxial lines, optocouplers and other devices. ④ filter: between the grid and IPC system