煤矿井下人员呼救报警系统测距法定位算法

Telemetry Positioning Algorithm for Coal Mine Underground Staff Asking for Help and Alarm System

对矿井下人员定位方式和算法进行了研究,分别介绍了TOA(Time of arrival)定位视距LOS和非视距NLOS 2种场景下的定位数学模型。依据基站接收到的由井下人员携带的报警设备发出的脉冲响应电平值来判断该信号场景,在非视距场景下使用测量值减去误差值的方式,转化为视距场景下的数学模型进行计算。通过实际测试证明:定位算法具有算法简单、计算量小、精度高等优点,具有一定实用价值。

Analyzed the telemetry positioning method and algorithm. The positioning models of non line of sight( NLOS) environment and line of sight( LOS) environment which are used in TOA( time of arrival) algorithm are introduced. The signal which is sent by the alarm equipment can be received by the base station. The pulse level of the signal can be used to distinguish the environment of LOS or NLOS.When NLOS environment judged,the model can be transformed to LOS environment by misusing the error value from the measured value. Through the test in real environment,the positioning algorithm has advantages of simple,small calculation amount and high accuracy. So this telemetry algorithm has high application value.