低功耗实时唤醒式无线灌溉控制器的设计与实现  

Design and Implementation of Low- power Real- time Awake Irrigation Controller

作　　者：王明飞[1,2] 郑文刚[1,2] 田宏武[1] 张馨[2] 李金雷[1] 

机构地区：[1]北京农业智能装备技术研究中心,北京100097 [2]北京农林科学院,北京100097

出　　处：《农机化研究》2016年第1期113-118,共6页Journal of Agricultural Mechanization Research

基　　金：国家"863"计划项目(2011AA100509);公益行业专项(农业)科研专项(201203012-4-1)

摘　　要：为降低现有农业无线灌溉系统中控制节点的能耗,延长无线灌溉网络的生命周期,采用OOK调制技术,设计了一种低功耗唤醒装置,改变了当前无线灌溉系统中定时周期唤醒方式,减少了系统中开销,并实现了在4 3 4 MHz频段下无线灌溉控制器的研制。控制器主要由C8 0 5 1 F9 6 5单片机、电源电路、电磁阀驱动电路、唤醒电路、无线收发通道和开关量采集电路组成。该控制器由基站发送指令控制,根据距离远近,自适应寻址接收信号,实现实时采集和控制。经试验测得:额定容量为250m Ah的单节碱性9V电池,可使控制器工作一个灌溉季以上;与采用传统唤醒方式相比,系统不仅降低了能耗,而且提高了响应速度。In order to reduce the energy consumption of control nodes in the wireless irrigation system of the existing agricultural field,and to extend the life cycle of wireless irrigation network. Based on OOK modulation technology,this paper designs a low power wake- up receiver which changes the mode of timing period way in traditional wireless irrigation system and reduces system overhead,and develops wireless irrigation controller in 434 MHZ frequency channel. The device consists of C8051F965 microcontroller,power circuit,valve driving circuit,wake- up receiver,wireless transceiver channel and acquisition module. According to distance between the controller and the base- station,the controller adaptively searches the signal which be sent by base- station,implements real- time acquiring and controlling. The test results show that a 9 V alkaline battery with the capacity of 250 m Ah could support the device for more than one irrigation season. Compared with the traditional way,the controller not only reduces energy consumption,but also improves real-time response.

关 键 词：实时 低功耗 唤醒接收 灌溉控制器 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]