仪控系统中EMI的控制与消除

随着电子技术、通信技术及计算机技术的飞速发展和广泛应用,精密仪控设备的应用领域日益扩大,并且它们对微弱信号的检测能力日趋升级。但是精密的仪控设备对电磁环境比较敏感,同时还会污染局部电磁环境对其他设备形成干扰。全面了解电磁干扰的来源和传播途径,采取有效预防措施,改善精密仪器设备的运行环境,是使其稳定工作的先决条件。本文分析了电磁干扰对仪器仪表系统的危害,并介绍了几种的抗电磁干扰设计。

EMI Control and Elimination of Instrument Control System

With the rapid development and wide application in electronic technology, communication technology and computer technology, the application areas of precision instrumentation equipment are growing gradually, and they gradually become weak signal detection capability to upgrade. But the sophisticated instrumentation devices are sensitive to electromagnetic environment, while are also polluting other electromagnetic environment on the formation of interference with other devices. The necessary prerequisites for its working stability are comprehensive understanding of electromagnetic interference sources and routes of transmission, taking effective preventive measures, improving the precision instruments and equipment operating environment. The paper analyzes the electromagnetic interference on the harm instrumentation systems and introduces several anti-electromagnetic interference designs.