摘要
提出了基于对称双边两路测距(SDS-TWR)机制的无线定位节点设计方案。定位节点采用NA5TR1为无线定位节点的核心器件,该器件内部集成了具有双边两路测距功能的模块和2.45 GHz ISM RF收发器,利用ATmega644v单片机为控制器,完成无线定位节点的整体设计,并给出无线定位节点电路原理图。节点通过测量不同基站间数据延迟时间差,实时计算出基站间的距离,经上位机对距离数据的处理,实现对目标的定位。测试结果表明,定位节点测距精度高,通信最远距离达600 m。
This paper proposed a solution for wireless location node based on Symmetrical Double-side Two-Way Ranging. NA5TR1 is used as the kernel part of the location node,the device integrates the module of Double-side-Two-Way and 2.45GHz ISM RF transceiver and ATmega644v is used as a microcontroller to control the RF chip through the SPI port. The node is finished and the circuit diagram is presented. A system design scheme of the location is put forward in this paper. The node tests the distance data through the difference of time delay, the host computes the data and gets the location. The results of the location nodes test show that the location node has high ranging ability and the communication distance reaches six hundred meters.
出处
《电子设计工程》
2011年第9期189-192,共4页
Electronic Design Engineering
