基于超宽带技术的强制戒毒人员实时定位系统

doi:10.16183/j.cnki.jsjtu.2020.01.010

摘要/Abstract

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7cm，测距更新频率达到10Hz，定位精度提高至20cm，定位频率达到5Hz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.

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

Abstract: 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 7cm, the refresh rate is larger than 10Hz, the locating error is lower than 20cm, and the refresh rate is larger than 5Hz. The whole system has a good accuracy and real-time capability.

Key words: ultra-wide band(UWB) technology; drug rehabilitation center; intelligent supervision; high-accuracy ranging; real-time location

中图分类号:

TP 391

孙铭阳，颜国正，刘大生，王志武，韩玎，赵凯，杨雷. 基于超宽带技术的强制戒毒人员实时定位系统[J]. 上海交通大学学报, 2020, 54(1): 76-84.

SUN Mingyang,YAN Guozheng,LIU Dasheng,WANG Zhiwu,HAN Ding,ZHAO Kai,YANG Lei. High Accuracy Ultra Wideband Real Time Location System for Drug Rehabilitation Center[J]. Journal of Shanghai Jiaotong University, 2020, 54(1): 76-84.

参考文献

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