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详细论述PowerBus通讯技术原理、系统组成结构和系统工作过程,给出了通讯模型、数据通讯格式和软件实现模块。该方案使用电力线载波通讯技术,可以实现对粮仓设备实时远程监控。通过温度和湿度传感器采集到的数据,经过通信网络回送给PC机,实现自动控制粮仓通风设备。通过在主控机加外部存储器和实时时钟来实现脱机控制。系统已在多个大型粮库使用并得到用户的肯定。系统具有能够避免繁重的布线工作,减轻粮库职工劳动强度,安装使用方便,经济节能等特点,有良好的应用与推广价值。
The principle of PowerBus communication technology, the system structure and system working process are discussed in detail. The communication model, data communication format and software implementation module are given. The program uses power line carrier communication technology, real-time remote monitoring of granary equipment can be achieved. Through the temperature and humidity sensors to collect the data back through the communication network to the PC, to achieve automatic control Granary ventilation equipment. Offline control is achieved by adding external memory and real-time clock to the master. The system has been used in several large grain depots and has been affirmed by users. System has to be able to avoid heavy wiring work to reduce the labor intensity of grain depot, easy installation, economic and energy saving, has a good application and promotion of value.