无线传感器网络在生态监测系统中的应用研究

Research on Application of Wireless Sensor Network in Ecological Monitoring

为了在目标监测区域实时监控农业生态的温度、湿度和亮度等信息,进行可靠地信息传输,解决在传统的农业生态监测中的问题,本文在农业生态监测系统中应用了无线传感器网络,研究了基于MSP430单片机和描述设计的无线数据采集节点硬件系统和软件系统。节点传输电路使用了类C放大电路与开关状态和接收超级再生检波电路与间歇运行状态。监控终端与检测节点通过27.145 mhz载体,问调制模式,两相的数据编码和1 kbps波特率。通信协议是基于分层时间空档,可以实现双向高效通信节点间,监控需求的农业生态检测和远程监控,可以广泛应用。

In order to real time monitor the agricultural Ecological information in the target monitoring area such as temperature, humidity and luminance, reliably transmit information, solve problems in the traditional agricul-ture Ecological monitoring and conduct exploration research on application of the wireless sensor network in agri-culture Ecological monitoring, this paper studies the wireless data collection node based on MSP430 singlechip and describes the design of the hardware system and software system. This node transmission circuit uses class C amplification circuit with switch state and receives the super regenerative detection circuit with intermittent opera- tion state. The monitoring terminal communicates with the detection node via 27,145MHz carrier, ASK modula-tion mode, biphasic data coding and 1Kbps Baud rate. The communication protocol is based on the hierarchical time slots, and it can realize two - way high - efficiency communication among nodes, monitor the requirement of a^riculture Ecological detection and remote monitoring and can be extensively applied.