摘要
针对现有RFID定位系统定位精度不足的问题,设计了一种基于Chirp扩频(chirp spread spectrum,CSS)技术的精确定位节点。该节点核心部件由NA5TR1芯片、控制器-STM32L单片机系统,以及具有低压差、低功耗性能的LDO电源芯片所构成,在煤矿井下恶劣环境中使用此节点进行定位,其覆盖距离能够达到150 m以上,定位精度能够达到3 m以内。
Focusing on the low accuracy of the existing RFID positioning system, a precise positioning node based on Chirp spread spectrum is designed. The positioning node is composed of the core component-NASTR1, the eontroller-STM32L MCU （micro control unit） and LDO with low dropout voltage and low power. Using such a node to realize positioning in the poor environment of the coal mine, the coverage distance can reach upwards of 150 m and the positioning accuracy can reach downwards of 3 m.
出处
《数字通信》
2014年第3期80-82,94,共4页
Digital Communications and Networks
基金
重庆工程职业技术学院资助项目(KJB201310)
