In accordance with Article 79 of the “Coal Mine Fire Prevention and Extinguishment Regulations,” it is mandatory to establish a comprehensive observation system for sealed areas. Regular measurements must be conducted to determine the pressure difference inside and outside the sealed area, as well as the concentrations of methane, oxygen, carbon monoxide, carbon dioxide, and air temperature. This facilitates air leakage analysis and helps in understanding the spontaneous combustion trends within the sealed area. The multi-parameter monitoring device for mining enclosed spaces is designed for gas monitoring and intelligent extraction in coal mine enclosed spaces (such as goafs). It incorporates advanced technologies such as laser gas detection, wireless transmission, data analysis, and intelligent control, providing a comprehensive solution for precise fire monitoring, intelligent early warning, and extraction regulation in coal mine enclosed spaces (goafs).

• The device is equipped with a built-in sampler that extracts real-time gas samples from the enclosed space (goaf) and analyzes the volume ratios of methane, carbon monoxide, carbon dioxide, oxygen, ethylene, acetylene, and other gases, with display functionality.
• It utilizes laser gas detection technology to achieve gas measurement, unaffected by gas composition and moisture interference.
• The device features functions for measuring and displaying pressure difference, temperature, humidity, and smoke.
• It supports autonomous wireless transmission of monitoring data via WiFi or LoRa wireless networks.
• The device includes gas path switching functionality to meet the requirements of multi-point detection and automatic gas sample retention.
• It is equipped with extraction metering monitoring equipment and intelligent valve regulation to achieve intelligent extraction in enclosed spaces (goafs).
• The device provides fire trend analysis and over-limit alarm capabilities, supporting data query, export, and report printing.