基于综合光缆信号的煤矿井下应急救援定位

Emergency Rescue Location in Underground Coal Mine Based on Integrated Optical Cable Signal

针对发生矿井灾害时,断电导致通信中断对人员定位造成的困难,提出综合光缆信号应急救援定位方法。基于振动对光相电位的影响,调节光相位对振动信号进行提取。对综合光缆信号应急救援定位方法进行实验,选择20 Hz方波、 200 Hz方波、拍击作为振动信号的来源,采集的信号进行去噪,最后经模拟算法实现振动波形还原。实验结果表明:对于长度12 km的光纤,1 kHz以下的振动信号能产生较好的响应特性。选择4.633 km与10.022 km指定地点进行拍击固定,重复监测,其定位误差在-7~+11 m范围内。综合光缆信号应急救援定位方法能用于人员快速准确定位,及时解救被困人员。

In view of the difficulty of personnel location caused by communication interruption caused by power failure in mine disaster,an integrated optical cable signal emergency rescue location method was proposed.Through the influence of vibration on the optical phase potential,the vibration signal can be extracted by adjusting the optical phase.The integrated optical cable signal emergency positioning method was tested.20 Hz square wave,200 Hz square wave and slap were selected as the sources of vibration signals,and the collected signals were denoised.Finally,the vibration waveform was restored by simulation algorithm.The experimental results show that for the fiber with length of 12 km,the vibration signal below 1 kHz can produce better response characteristics.Select the designated locations of 4.633 km and 10.022 km for flapping fixation and repeat monitoring,and the positioning error was within the range of-7-+11 m.The integrated optical cable signal emergency rescue positioning method can be used for quick and accurate positioning of personnel and timely rescue of trapped personnel.