Research on proximity detection method for machines in coal mine
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摘要: 在分析主流接近探测技术特点和应用现状的基础上，提出基于高精度无线测距和三维定位的井下装备接近探测方法。该方法用对称双向到达时间无线测距方法测量个人标签到探测器的距离，通过三维最小二乘法计算个人标签相对于移动设备的精确坐标，最后通过区域设定和判断得出探测结果。现场试验结果表明，该方法可以实现设备周边360°无死角探测，与RSSI方法和磁场区域标识方法相比，具有定位精度高、响应时间短、配置简便等特点。Abstract: Based on analysis of different properties and application status of mainstream proximity detection methods for machines in coal mine, a novel proximity detection method using high wireless precision ranging and three-dimensional location technology was proposed. The method uses wireless distance measurement method SDS-TW-TOA to measure distance between personal tag and detector, calculates precise coordinates of personal tag relative to mobile device through three-dimensional least squares method, and finally obtains detection result through regional setting and judgment. Field test results show that the proposed method can achieve 360° detection around the equipment, and has characteristics of high positioning accuracy, short response time and convenient configuration compared with RSSI method and magnetic field marker method.
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Keywords:
- proximity detection /
- wireless ranging /
- precision location /
- collision avoidance
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