AN INTRINSICALLY SAFE UNINTERRUPTED POWER SUPPLY FOR USE IN HAZARDOUS GASSY UNDERGROUND MINE ENVIRONMENT

摘要

The intrinsically safe uninterrupted power supply of the present invention for use in hazardous gassy underground mine environment, particularly for underground environmental monitoring system is capable of providing intrinsically safe power supply and also intrinsically safe uninterrupted power backup in case of failure of normal power supply in underground mines, particularly for operating instrument/sensors working for the environmental monitoring system. The intrinsically safe uninterrupted power supply converts available 110 V AC to the required low voltages: 6 V and 18 V DC and also provides power backup via batteries in underground mines in case of normal power failure by which the instrument/sensors are operating. The system is capable of protecting instrument/sensors from high current/short circuit which enables to prevent explosion in an underground mine.