摘要
为促进我国现代化农业发展,实现农业管理的高效性和科学性,设计了一种基于LON平台的现代农业全分布式监控系统,系统由现场采集层、数据通信层和远程数据处理中心层3层组成。系统的现场采集层采用LON平台实时监控农业现场参数,数据通信层依托以太网和GPRS通信终端,实现了农业现场与远程数据处理中心的信息交互,远程数据处理中心层通过科学计算得出农业策略。重点对LON平台的重要设备网关节点的原理模型、核心硬件和软件进行了分析,网关节点在Host Based架构模式下通过Slave_A模式并行接口实现虚拟令牌乒乓式数据通信,完成了LON现场总线与和RS232串口总线的无缝衔接。
In order to promote the development of modern agriculture in China and achieve efficient and scientific agricultural management, a monitoring system of modern agricultural distribution based on LON platform was designed. The system was consisted of field acquisition layer, data communication layer and remote data processing center layer. The field acquisition layer of system can achieve real-time monitoring of agricultural field parameters using LON field bus. The data communication layer of system can realize information interaction between the agricultural field and remote data processing center relying on the Ethernet and GPRS communication terminal. The remote data processing center layer of system can produce agriculture strategy through scientific calculation. The core equipment of gateway node on the LON platform has been dissected mainly with principle model, key hardware and key software. The Host Based architecture of gateway node can realize seamless connection between LON bus and RS232 serial bus using Slave_A model of parallel interface with ping-pong passing mechanism of virtual token.
出处
《湖北农业科学》
2015年第2期453-456,共4页
Hubei Agricultural Sciences
基金
2012年江苏省淮安科技支撑计划项目(SN12052)
2013年江苏省淮安创新载体平台建设计划项目(HAP201313)
