Patent ID: 6317041
Filing Date: 2001-11-13
Classification: G08B

Abstract:
In combination with an above-ground rescue/safety control room having a radio system connected to a monitoring computer, a refuge bay system for monitoring the conditions at a below-ground refuge bay and communicating the conditions to the control room, wherein the refuge bay includes a fan, a battery pack, a battery charger, and door means, and audio-visual alarm means outside the refuge bay,said refuge bay system comprisinga controller and a radio means,said controller having electronic means for monitoring the operation of the fan, the battery charger and the door means, and for operating said fan, said alarm means and said radio means,said radio means communicating the controller monitored operations to said radio system of the control room,manually operable panic means on said controller for activating the fan and audio-visual alarm means, transmitting a panic signal to said control room, and converting the transmission mode of the radio means from data to voice.