Abstract
A local methane detection and power cut-off system for underground mines has been designed to accomplish continuous monitoring of methane gas concentration. It consists of subunits, for example, a suck-in fan, infrared methane sensor, loud audio alarm generator, visual display screen, auto power cut-off relay, detachable battery, remote readout facility, and microcontroller. The mining industry can benefit greatly from this development as it prevents mine disasters caused by methane explosion by cutting off the power supply when the methane concentration exceeds the permissible limit. At the same time, the system raises an alarm, which helps with the evacuation of miners and machinery from the danger zone, resulting into saving of valuable lives as well as the mine’s property.
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