Coal Mine Safety Monitoring Accessories Solution

In underground environments where gas and respirable dust coexist, a mining explosion-proof control box is required, equipped with a coal mine-grade PLC controller, explosion-proof power supply, and interface modules to meet safety certifications for pyrite explosive gas areas (Group I, Zone 1/2).

The box and terminal box comply with MSHA and IECEx/ATEX standards, providing an integrated solution for waterproofing, dustproofing, and explosion-proofing.

On the safety monitoring sensor level, the ALTAIR 4X multi-gas detector is used, integrating a catalytic combustion methane sensor and electrochemical CO/H₂S detection to achieve real-time online monitoring of LEL, O₂, CO, and H₂S, ensuring personnel safety. It is paired with the TSI DustTrak™ environmental monitor, which measures PM₁, PM₂.₅, and PM₁₀ using forward light scattering principles, enabling continuous monitoring and alarming of respirable dust concentrations.

Data is preprocessed locally at the edge computing gateway (based on the WisBlock architecture), including noise filtering and threshold judgment, reducing bandwidth usage and achieving rapid warnings within ≤5 seconds.

Industrial-grade LoRaWAN RS485 bridges are used for wireless communication, supporting long-distance, strong anti-interference underground wireless networking to ensure stable data transmission.

At the operational level, an explosion-proof HMI operation panel is deployed, featuring a high-temperature-resistant aluminum alloy shell and vibration-resistant resistive touchscreen, supporting local alarm lists and 3D mine thermal maps to visualize gas and dust distribution, improving emergency response efficiency.

The entire system is equipped with redundant power supplies and an emergency power-off button to ensure safe shutdown and switching to backup power under extreme conditions.