环境监测仪器自动传输网络中RS-232接口防雷设计的探讨

Discussion on RS-232 Interface Lightning Protection in the Automatic Transmitting Network of Environment Monitoring Instruments

目前全国大部分空气质量自动监测站房均建设在空旷场地,而数据通信单元及传输线路上广泛采用RS-232数据通讯接口,在运行当中容易感应雷电等强电磁干扰,严重影响监测人员对系统故障的判断和处理。本文对RS-232数据通讯接口进行了防雷设计的探讨。

At present most of air quality automatic monitoring stations all over the country are constructed in the open space.The data communication unit and transmission link are RS-232 data communication interface.It is easy to be damaged in running process because electromagnetic interference of thunderbolt.It affects monitoring workers to judge and make disposal for system error.It was discussed in this paper for lightning protection of RS-232 data communication interface to reduce communication blackout because of electromagnetic interference of thunderbolt induction.