基于STC89C52单片机的地震台站远程监控系统

针对无人地震监测点日益增加和台网运行维护存在不足的现状,提出一种基于STC89C52单片机的远程监控系统。对该系统的单片机微控制器、通信模块、温湿度检测模块等硬件组成进行描述,并介绍其控制程序。实践证明,该系统可以对无人值守台站的设备进行断电和重启等远程操作并对工作环境进行实时监测,为地震监测设备的实时维护和稳定运行提供依据与保障。

Remote Monitor and Control System for Seismic Stations Basedon STC89C52 Single Chip Microcomputer

The number of unmanned seismic monitoring stations is increasing together with an associated lack of operation and maintenance activities. This study puts forward use of a remote monitoring system based on a STC89C52 single chip microcomputer (SCM). The detection and control part of the system mainly includes a microcontroller, communication module, LCD character module, power supply module, reset circuit, and all types of sensors. Temperature and humidity are real-time collected and the SCM instructs the control relay to absorb and release. If an anomaly occurs at the station, the warning detection system transforms information into an abnormal event alarm command using a GPRS Modem; a command is then sent using a GSM communication link to the mobile phone of the person responsible for maintaining the instrument in the form of short message, providing references and decisions made. For example, if damage to equipment is not caused by the instrument, the GSM will issue a corresponding SMS command, which can lead to termination of power and restarting operation of the equipment using the device reset circuit. In contrast, if the instrument causes damage, a maintenance engineer is sent to repair the instrument. Based on the principle that intermediate relay is controlled by the SCM, the system can remotely reboot the industrial board power supply using the intermediate relay to drive the AC contactor. This solves problems such as that which occurred when the FHD-2B proton magnetometer at Yongan geomagnetic station, which was controlled by a PC104 industrial control computer, crashed repeatedly and the network interface RJ45 was continually blocked.