Chapter 7 introduced the usual interference in the data acquisition system, including same intrinsic noise interference of the devices, some common impedance interference electromagnetism interference and discussed the method to restrain them. 在第7章,介绍了数据采集系统常见的干扰,包括器件固有噪声干扰、公共阻抗干扰、电磁场干扰、并讨论了抑制这些干扰的措施。
Starting from the principle of intrinsic safety explosionproof, the Author expounds two elements to constitute an intrinsic safety system. They are energy restriction and energy storage element, and the problem of impedance matching in the system. 从本安防爆的原理出发,阐述了构成本安系统的两个要素&限制能量和贮能元件,以及系统中的阻抗匹配问题。