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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。
With the rapid development and widespread application of electronic technology, communication technology and computer technology, the application fields of precision instrument control equipment have been expanding day by day, and their capability of detecting weak signals is escalating. However, sophisticated instrumentation and control equipment is more sensitive to the electromagnetic environment, but also contaminate the local electromagnetic environment to interfere with other devices. A comprehensive understanding of the sources and routes of transmission of electromagnetic interference, the adoption of effective preventive measures and the improvement of the operating environment for precision instruments and equipment are the prerequisites for its stable operation. This article analyzes the harm of electromagnetic interference to instrumentation system, and introduces several anti-electromagnetic interference design.