基于超宽带技术的强制戒毒人员实时定位系统  

High Accuracy Ultra Wideband Real Time Location System for Drug Rehabilitation Center

作　　者：孙铭阳 颜国正[1] 刘大生[1] 王志武[1] 韩玎 赵凯[1] 杨雷 SUN Ming yang;YAN Guozheng;LIU Da sheng;WANG Zhiwu;HAN Ding;ZHAO Kai;YANG Lei(School of Electronic Information and Electrical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学电子信息与电气工程学院

出　　处：《上海交通大学学报》2020年第1期76-84,共9页Journal of Shanghai Jiaotong University

基　　金：国家自然科学基金(61673271,81601631)资助项目

摘　　要：在戒毒所智能化管理的驱动下,基于超宽带技术,设计了一种应用于戒毒所的高精度测距定位系统,改进了原有紫蜂(ZigBee)和无线局域网(Wi-Fi)方法检测精度低的问题.分析测距的误差来源,做出相应的优化校正,并提出一种延迟参数的校准方法,进一步提升测距的精度和稳定性.该系统具有测距与定位两种功能,测距功能可以设置地理围栏以限制人员活动区域,定位功能可以实时监测人员位置.实验研究表明:修正后系统测距精度达到7 cm,测距更新频率达到10 Hz,定位精度提高至20 cm,定位频率达到5 Hz以上,可以更好地满足戒毒所定位系统的实时性和精确性的要求.To satisfy the needs of intelligent supervision in drug rehabilitation center, a novel high-accuracy real-time location system based on ultra wideband(UWB) technology is proposed. Compared to ZigBee and Wi-Fi location systems, the UWB location system well improves the detection accuracy. The error sources of UWB system are analyzed and the delay parameter is corrected with a newly proposed parameter. The ranging function of system is used as geo-fencing, limiting the activity area of patients. The locating function of the system can calculate the position of patients and paint their positions on the screen simultaneously. Experiments indicate that the ranging error is lower than 7 cm, the refresh rate is larger than 10 Hz, the locating error is lower than 20 cm, and the refresh rate is larger than 5 Hz. The whole system has a good accuracy and real-time capability.

关 键 词：超宽带技术 物联网 戒毒所智能监护 高精度测距 实时定位 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]