摘要
为解决果园环境参数远程检测中网关节点因电磁干扰造成ZigBee模块传输距离过短,不能满足动态配置ZigBee网络的不足,采用核心板加底板及模块化接口的硬件设计思路,提高系统的抗电磁干扰能力;采用串口编程及单线程通信策略实现ZigBee网络动态配置,用判断2次接收数据差值及变化趋势决定是否传输数据以减小功耗。测试表明,网关节点可稳定采集数据并远程传输,提高了抗电磁干扰能力,与电路板集成设计相比通信距离增加了1倍,并可灵活地动态配置ZigBee网络。
In the remote detection of orchard environmental parameters,gateway nodes suffer from two deficiencies that remain to be solved： short transmission distance of ZigBee module due to electromagnetic interference;failure to meet the dynamic configuration of ZigBee network.The hardware design adopted the structure of kernel board plus motherboard and modularized interface to improve anti-electromagnetic interference performance.The software design adopted two strategies,i.e.serial programming and single thread communication,to realize dynamic configuration of ZigBee network.To reduce energy consumption of the system,gateway nodes decided whether to upload data according to the difference between consecutively-received data and the variation tendency.The test results indicated that gateway nodes could realize stable data acquisition and remote data transmission.Due to the improvement of anti-electromagnetic interference performance,communication distance was doubled compared with the design of integrated circuits board.Moreover,the ZigBee network could be configured flexibly and dynamically.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2010年第6期182-186,共5页
Transactions of the Chinese Society for Agricultural Machinery
基金
科技部
财政部以大学为依托的农业科技推广模式建设项目(XTG2008-27-2)
关键词
果园
环境参数
无线传感器网络
远程检测
网关节点
Orchards
Environmental parameters
Wireless sensor networks
Remote detection
Gateway nodes
