H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 7/26 (2006.01) G08B 25/00 (2006.01) G08B 25/01 (2006.01) G08C 17/00 (2006.01)
Patent
CA 2110353
A system for sensing information at a plurality remote, typically hazardous, locations and transmitting the sensed information to a main monitoring center. Remote portable "attendants" that take the place of a human safety monitor are carried by persons at the remote locations. The portable attendants produce an audible and/or visual warning to the operator at selected times. If the operator does not acknowledge the warning within a selected time, an alarm signal is sounded and is sent to the main central by radio for processing in a central processing unit (CPU). The CPU directs an appropriate safety response and may open a voice radio circuit between central operators and the remote monitor location. A switch is provided so that the remote operator can manually trigger the alarm. A gas sensor which can detect and measure the level of a selected gas may be included at the remote monitor, with the capability of sounding an alarm at the portable attendant and transmitting an alarm signal to the CPU identifying the gas and indicating the level. Sensors for similarly monitoring effectiveness of a ventilation system at the remote location can be provided. Finally, the arrangement for receiving and transmitting radio signals from the central monitor may include a plurality of spaced spread spectrum radio frequency transmitter/receivers to permit the location of the portable remote attendants to be rapidly determined.
Kirby Eades Gale Baker
Safe Environment Engineering
LandOfFree
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