基于短信技术的电机转子温度在线监测(Ⅱ)--数据通信与通信协议

Rotator temperature on-line monitoring based on short message service(Ⅱ):data communication and communication protocol

在基于短信技术的电机转子温度在线监测系统中,无线调制解调器、全球移动通信网络以及无线移动通信模块构成了数据通信的物理平台。系统中的命令信息与数据信息均以短信方式传输。在数据通信中,既可采用多主通信方式,又可采用主从通信方式。为提高数据通信的可靠性与安全性,系统采用了较为完善的通信协议,包括帧头标志、通信密码、测温装置的通信地址、命令信息或数据信息、校验和以及帧尾标志。通信测试结果表明:该系统通信装置工作性能稳定、数据传输安全可靠。

The data communication platform of on- line rotator temperature monitoring system consists of wireless modem,public mobile communication network and wireless mobile commu- nication modules. The commands and data are transmitted by SMS（Short Message Service）,in either multi- master or master- slave communication mode. A relatively sophisticated communication protocol is adopted to improve communication reliability and security,including frame head flag, communication password,communication address of temperature measuring unit,command or data information,check sum and frame end flag. Test results show that,its working performance is stable and the data transmission is secure and reliable.