农业工程学报Issue(7)：139-147,9.DOI:10.3969/j.issn.1002-6819.2013.07.018
温室环境参数无线传感器网络监测系统构建与CC2530传输特性分析
WSN monitoring system for greenhouse environmental parameters and CC2530 transmission characteristics
摘要
Abstract
Aiming at the problems of traditional greenhouse environment monitoring systems such as complicated wiring, high cost, inflexible monitoring, and high energy consumption of previous wireless sensor networks (WSNs), this paper designed a WSN-based greenhouse environmental parameter monitoring system, constructed its hardware with a CC2530 wireless sensor network chip and peripheral interface, compiled its underlying software by using the protocol stack of Z-Stack, and developed the PC software of greenhouse environment monitoring system based on a VB software platform. The transmission characteristics of a CC2530 chip was analyzed, and the experimental results showed that the effective transmission distance of the nodes was 60 m when they were placed 1.5 m above the ground. The connection between RSSI and the distance of nodes could be seen that the transmission power of the nodes gradually increased with the change of distance. The magnitude of RSSI attenuated faster when the distance of nodes was between 0 to 20 m. The fluctuation of RSSI because of the signal was blocked by the jatropha in the greenhouse, and the average height of jatropha was 2 m. The packet loss rate started to increase when the RSSI was less than -80 dBm, and the basic signal transmission capability of nodes was lost when the RSSI was less than-90 dBm. Besides, a single node with two 5th batteries could sustain the acquisition of greenhouse environmental parameter data for 45 d and accurately detect the temperature, humidity, and soil volumetric water content for greenhouse environment. During the experiment of energy consumption, the sensor nodes of soil moisture acquired data every half-hour, and the sensor nodes of temperature and humidity collected data every hour. The sensor nodes of soil moisture significantly consumed more energy than the sensor nodes of temperature and humidity under the same conditions of power transmission after 20 d. There was a slight increase for the voltage of nodes in the process of dormancy. Once the voltage of nodes falls below 3 V, although it has few impacts to the capacity of signal transmission, it may lead to abnormal work for the sensors. Above all, this system was proved to be practical and reliable.关键词
温室/监测/无线传感器网络/土壤含水率/温度/湿度/CC2530Key words
greenhouse/monitoring/wireless sensor networks/soil moisture/temperature/humidity/CC2530分类
信息技术与安全科学引用本文复制引用
张京,杨启良,戈振扬,齐亚峰,周兵,殷欣..温室环境参数无线传感器网络监测系统构建与CC2530传输特性分析[J].农业工程学报,2013,(7):139-147,9.基金项目
国家自然科学基金(51009073,51109012) （51009073,51109012）
水利部公益项目(201101042) （201101042）
