摘要
在大型停车场中,对车辆的准确定位可以帮助用户快速找到车辆所在位置。不同于室外定位,GPS很难被应用于室内停车场中对车辆进行定位。本文提出的定位方式则使用成本低,体积小的无线传感器节点组成的无线传感器网络(Wireless Sensor Network)对车辆进行定位。针对室内停车场特点,在对现有测距技术进行了详细的分析和评估后,该系统采用了一种基于RSS的定位算法。针对于无线传感器网络节点运算能力有限的特点,该系优化了为定位算法,保证其实现简单,运行高效。同时,针对于无线传感器网络的能耗限制高的特点,该系统还将设计的定位算法与MAC协议相结合,并分析其能耗效率。
In large parking lots, the exact location of the vehicle can help users quickly find the location of their vehicle. Unlike outdoor positioning, GPS is difficult to be applied to indoor parking lot to locate the vehicle. We propose to use wireless sensor network which consist of low cost, small size wireless sensor nodes to locate the vehicle. Based on the environments of indoor parking lots and characteristics of the existing ranging techniques, a RSS-based localization algorithm is designed for indoor parking lot. Wireless sensor network nodes suffer from limited computing ability, so the localization algorithm has been optimized to ensure its simple, efficient operation. Also, due to the strict energy constraints in wireless sensor networks, a joint localization algorithm with MAC protocol is proposed, and its energy efficiency is analyzed.
出处
《软件》
2012年第10期67-70,共4页
Software
关键词
通信与信息系统
无线传感器网络
定位算法
能耗效率
Communication and Information System
Wireless Sensor Network
Localization Algorithm
Energy Efficiency
