基于以太网供电的检测控制系统

摘要

为了提高智能温室的自动化水平,设计了以PIC18F97J60单片机为核心的检测控制系统.系统采用先进的以太网供电技术,通过网线连接到作为以太网供电设备的中继站,从中继站得到电源.同时,系统通过对影响温室的光照、湿度、温度和二氧化碳等环境因素进行收集,通过网线电缆发送给上位机DSP并从DSP得到相应的控制策略.系统实现了信号线和电力线的合二为一,便于分布式、网络化布局,提高了现场应用能力.%To improve the automatic level of intelligent greenhouse, the detection and control system with the kemel of PIC18F97J60 microcontroller was designed.The system adopled the advanced POE ( power over Ethemet) technology, connected the power sourcing equipment,intermediate site with Ethemet cable and got power from it.At the same time,the system can gather environment factors such as light intensity , humidity, temperature and carbon dioxide.The system sends those messages to upper computer DSP,and then gets control strategy from it through Ethemet cable.The system gets siWal lines and power lines together.It ' s suitable for distributed , networked layout and improves field application abiliiy.