工矿自动化2026，Vol.52Issue(5)：156-165,10.DOI:10.13272/j.issn.1671-251x.2025080069
基于低功耗蓝牙的多通道煤钻屑瓦斯解吸指标测定系统
Multi-channel measurement system for gas desorption indices of coal drill cuttings based on Bluetooth Low Energy
摘要
Abstract
Gas desorption indices of drill cuttings are important parameters for predicting outburst hazards during cross-cut coal uncovering and coal roadway excavation.To solve the problems of the existing measuring instruments for gas desorption indices of drill cuttings,such as a low level of digitalization,complicated operation,slow measurement speed and difficulty in matching the drilling schedule,a multi-channel measurement system for gas desorption indices of coal drill cuttings based on Bluetooth Low Energy(BLE)was developed.The system adopted a distributed one-master multiple-slave architecture and consisted of one intrinsically safe handheld terminal with data reading and management functions and multiple measuring instruments for gas desorption indices of coal drill cuttings.Using ESP32S3 as the main control chip and integrating pressure and weighing modules,the measuring instrument could automatically measure the gas desorption index Δh2 or K1 of drill cuttings,and it could independently bind to and exchange data with the handheld terminal through a unique MAC address via BLE communication.Test results showed that the power consumption of the measuring instrument was only 362.6 mW in the standby state,706.7 mW in the measuring state and 954.6 mW in the data transmission state,and it could work continuously for more than 8 h.For coal samples of different coal types under different adsorption pressures,the relative error of Δh2 between the measuring instrument and the traditional instrument was 1.79％-7.93％,with an average relative error of 4.34％and a standard deviation of 1.87％.The relative error of K1 was 2.44％-7.50％,with an average relative error of 5.05％and a standard deviation of 1.65％,indicating high measurement accuracy and precision.Under the conditions of 85％humidity and ambient temperature of 15-55 ℃,the system showed good stability in parameter measurement and BLE communication,and compared with the high-precision pressure sensor,the relative error of pressure measurement data was 0.83％-3.33％,with an average relative error of 1.67％.关键词
煤与瓦斯突出/煤钻屑瓦斯解吸指标/煤钻屑瓦斯解吸指标测定仪/本安型手持终端/低功耗蓝牙Key words
coal and gas outburst/gas desorption indices of drill cuttings/measuring instrument for gas desorption indices of drill cuttings/intrinsically safe handheld terminal/Bluetooth Low Energy分类
矿业与冶金引用本文复制引用
马文伟..基于低功耗蓝牙的多通道煤钻屑瓦斯解吸指标测定系统[J].工矿自动化,2026,52(5):156-165,10.基金项目
河北省自然科学基金重点项目(E2024508006). （E2024508006）
