Gas detection and alarm system for monitoring gas such as carbon

Details Gas detection and alarm system for monitoring gas such as carbon Gas detection and alarm system for monitoring gas such as carbon

1994-12-28

1997-12-02

Swarthout, Brent A.

Communications: electrical

Condition responsive indicating system

Specific condition

340633, 340634, 340628, 73 2321, G28B 1710

Patent

active

056941188

ABSTRACT:
A gas detection and alarm system and a method thereof for monitoring a predetermined dose of carbon monoxide and other gases in the atmosphere which can be harmful to humans, having a gas detection/alarm device comprising a detection circuit which detects a predetermined dose of a gas such as carbon monoxide, an indication circuit which visually and audibly indicates the dose detection to the user based on the detection circuit, a microprocessor for digitally operating the detection circuit and the indication circuit, a power conversion circuit which converts AC power to DC power without using any transformers and which supplies the converted constant power to the detection circuit, indication circuit and microprocessor, and a housing which compactly houses the detection circuit, indication circuit, power conversion circuit and microprocessor.

REFERENCES:
patent: 1313089 (1919-08-01), Ile
patent: 3246312 (1966-04-01), McGinn
patent: 3445669 (1969-05-01), Jordan et al.
patent: 4498330 (1985-02-01), Hosoya
patent: 4688021 (1987-08-01), Buck et al.
patent: 4839014 (1989-06-01), Park et al.
patent: 4893113 (1990-01-01), Park et al.
patent: 5132659 (1992-07-01), Kuo
patent: 5239980 (1993-08-01), Hilt et al.
Figaro Gas Sensor TGS203 (Gas Detection Device for Carbon Monoxide); Figaro Engineering Inc., Osaka Japan; pp. 1-16; Aug. 1990.

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