摘要
传统粮库粮食温度测量中,测温节点的室内定位精度依赖大量信标节点,给实际的工程应用带来了极大不便。为简化应用模型,根据无线电波的距离衰减曲线特性建立差分定位模型,提出了基于接收信号强度指示(Received Signal Strength Indication,RSSI)差分定位模型的粮库测温节点定位方法。模型采用动态信标节点,根据RSSI值依次确定距离信标节点最近的未知节点,最终实现全部节点的定位。实验表明,基于RSSI差分定位模型的粮库测温节点不需要额外布置信标节点,可以降低环境随机误差,而且定位精度高于传统测距定位模型。
In the traditional grain depot, the indoor location accuracy of the temperature measurement nodes depends on a large number of beacon nodes, which brings great inconvenience to practical engineering applications. To simplify the application model, a differential location model is established according to the distance attenuation curve characteristics of RSSI（ Received Signal Strength Indication）. Moreover, a positioning method — based on RSSI differential location model of the grain temperature measurement node was proposed. The model adopts dynamic beacon nodes, and determines the nearest unknown node from the beacon node according to the RSSI value, and finally locates all the nodes. Experiments show that the temperature measurement nodes based on the RSSI differential location model do not need additional placement of beacon nodes, which can reduce the random error of the environment and the positioning accuracy is higher than that of the traditional ranging location model.
作者
高金辉
刘宏杰
吴雪冰
Gao Jinhui, Liu Hongjie, Wu Xuebing(College of Electronic and Electrical Engineering, Henan Normal University ,Xinxiang 453007, Chin)
出处
《电子技术应用》
2018年第5期9-12,共4页
Application of Electronic Technique
基金
河南省科技攻关项目(162102210068)
关键词
无线传感器网络
接收信号强度指示
差分定位
动态信标节点
wireless sensor networks
received signal strength indication
differential positioning
dynamic beacon node
