矿井采空区气体-温度-压差无线传感器的设计及应用

Design and application of wireless sensor for gas-temperature-pressure difference in mine goaf

针对矿井采空区煤自燃在线监测的技术难题,提出了密闭采空区气体-温度-压差无线传感器的设计方案。基于低功耗按需轻量动态多径路由协议,设计出集温/湿度,CO,O_2,CH_4,压差传感器于一体的密闭采空区气体-温度-压差无线传感器;结合采空区遗煤分布规律,确定了大面积密闭采空区高密度网络化测点布置方法,形成了具有可剪裁性、冗余性、鲁棒性等特点的气体-温度-压差无线传感器网络,解决了单点监测范围小、指标单一、特征信息异常反映滞后等问题。试验结果表明,无线传感器性能稳定良好,实现了对采空区气体-温度-压差的动态监测,保障了矿井的安全生产。

Aiming at the technical problems of the online monitoring for coal spontaneous combustion in mine goaf, a de- sign scheme of wireless sensor for gas-temperature-pressure difference in airtight goaf is put forward. On the basis of low-power consumption on-demand lightweight dynamic multipath routing protocol, a wireless sensor for gas-temperature-pressure differ- ence in mine goaf was designed, which is integrated with the sensors of temperature-humiture, carbon monoxide, oxygen, methane, differential pressure together. According to the distribution law of residual coal in goal, the layout method of high-density net- worked measurement points in large airtight goal was determined, the gas-temperature-pressure difference wireless sensor net- work with the characteristics of tailorability, redundancy and robustness was generated, and the problems of narrow single-point monitoring range, onefold index and lagging feature information abnormal reflection were solved. The test results show that the wireless sensor has stable performance, can realize the dynamic monitoring of gas, temperature and pressure difference in goaf, and guarantee the safe production of the mine.