基于UWB技术的健康定位手表设计与实现

Design and implementation of positioning watch with health monitoring based on UWB technology

针对现有定位终端大多只具有精确定位、撤离报警、紧急求救等功能,而不能实现生命体征监测功能的问题,设计了一种基于UWB技术、具备健康监测功能的定位手表。该手表采用TOF定位算法实现矿井巷道精确定位,将井下人员精确定位数据和生命体征健康数据传输至服务器,实现对人员位置信息和健康数据的实时监测。健康定位手表的关键技术主要有:矿井巷道线型TOF定位算法,心率、血氧和体温等生命体征监测技术,三轴传感器检测运动状态及低功耗休眠机制。测试结果表明:该手表定位精度小于等于±0.30 m、定位距离可达400 m,对心率、血氧和体温等生命体征的监测功能正常,平均工作电流小于2 mA,最小休眠电流小于500μA,满足了定位终端智能化、多样化需求。

Most of the existing positioning terminals only have the functions of accurate positioning,evacuation alarm,emergency SOS,etc.,but can not realize the vital signs monitoring function.In order to solve the problem,a positioning watch with health monitoring based on UWB technology was designed.The watch adopts the TOF positioning algorithm so as to realize the accurate positioning of mine roadway,transmits accurate positioning data and vital signs health data of underground personnel to the server,and realizes real-time monitoring of personnel location information and health data.The key technologies of positioning watch with health monitoring mainly include:linear TOF positioning algorithm of mine roadway,vital signs monitoring technology such as heart rate,blood oxygen and body temperature,three-axis sensor to detect motion state and low-power hibernation mechanism.The test results show that the positioning accuracy of the watch is≤±0.30 meters,the positioning distance can be up to 400 meters,the monitoring function of vital signs such as heart rate,blood oxygen and body temperature is normal,the average working current is less than 2 mA,and the minimum resting current is less than 500μA.It meets the intelligent and diversified needs of positioning terminals.