The automation system is used in harsh industrial sites,and anti-interference measures are particularly important.In practice,there are often cases of debugging failure or even equipment damage due to interference.There are three types of sources of interference from automated systems:
1)Space radiation interference;
2)External lines of the system,including interference introduced by power lines,signal lines,grounding systems,etc.;
3)Electromagnetic radiation and line interference inside the system.
自动化系统应用于恶劣的工业现场,抗干扰措施尤为重要。实践中,经常出现由于干扰导致调试失败甚至设备损坏的事例。自动化系统的干扰,有以下3类来源:
1)空间辐射干扰;
2)系统外部线路,包括电源线、信号线、接地系统等引入的干扰;
3)系统内部电磁辐射及线路干扰。
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