基于PLCC技术的农业节水灌溉自动控制器的设计与应用  

Design and Application of Water-saving Irrigation Automatic Controller in Agriculture Based on Low-voltage Power Line Carrier Communication Technology

作　　者：陈凤[1,2] 赵春江[1] 郑文刚[1] 申长军[1] 

机构地区：[1]国家农业信息化工程技术研究中心,北京100097 [2]首都师范大学,北京100037

出　　处：《节水灌溉》2010年第2期13-16,共4页Water Saving Irrigation

基　　金：北京市科技攻关项目"农业节水灌溉监测与控制设备研制与开发"(D0706007040191);国家"十一五"科技支撑计划"农产品流通过程信息化关键技术与系统研发"(2006BAD10A04);国家"十一五"科技支撑计划"灌区地下水开发利用关键技术"(2006BAD11B05)

摘　　要：低压电力线载波通信技术在我国农业节水灌溉领域有着巨大的潜在利用价值。针对传统的农业节水灌溉自动控制系统中因常采用RS-485通信方式而带来的布线多、施工难和成本高的问题,提出了一个将电源线和信号线合二为一的新方案,设计了一个基于电力载波通信技术的农业节水灌溉自动控制器,能实现主机与终端器件之间的远距离通信,具有可同时收发、运行稳定、抗干扰性强、便于维护和扩展的特点。该控制器可以实现2 000 m距离内数据的高速可靠传输,传输速率达到5.5 kbps,能节省至少60%的田间电缆,能满足农业节水灌溉监测与控制的需求并能大大降低工程成本,因此该控制器在农业领域有着广阔的应用前景。Low-voltage power line carrier communication technology has great potential utilizable value in the field of agricultural water-saving irrigation in China. Traditional agricultural water-saving irrigation automatic control systems often adopt RS-485 commu- nication mode, which brought about many problems such as routing too much, difficult to construct and high cost. This paper put forward a new scheme that combines the power lines with signal lines together, and designs a water-saving irrigation automatic controller in agriculture based on low-voltage power line carrier communication, which can realize the communication between host and various different terminals in long distance. With the advantage of stable operation, strong anti-interference, this module can send and receive data at the same time. Moreover, it is easy to maintain and extend. It can also achieve a reliable and high-speed data transmission in 2000 metres with the transmission rate up to 5.5kbps and can save 60~ cable at least, which can absolutely satisfy the demand of monitoring and controlling in agricultural water-saving irrigation and greatly reduce the cost of the project. So this module will have a wide application prospect in field of agricultural.

关 键 词：电力载波通信 灌溉控制 调制解调 二线制通信 

分 类 号：TN915.813[电子电信—通信与信息系统]