Title:
【発明の名称】アナログ火災報知装置
Document Type and Number:
Japanese Patent JPH079680
Kind Code:
B2
Abstract:
An analog fire detecting system in which a plurality of sensors produce analog data corresponding to a physical state such as temperature, smoke density, etc. relevant to a fire condition. The values of such analog data are compared with a predetermined threshold level, and if the threshold level is exceeded the analog data is transmitted to a central station in response to a polling signal therefrom. A CPU in the central station determines, from the analog data from the sensors, if there is a possibility of a fire and if so makes a predictive calculation of the remaining time until a fire condition will be reached. An alarm is given when such predicted time falls below a preset interval.
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Inventors:
Yutaka Sadataka
Masaki Maruyama
Masaki Maruyama
Application Number:
JP6886385A
Publication Date:
February 01, 1995
Filing Date:
April 01, 1985
Export Citation:
Assignee:
Hochiki Corporation
International Classes:
G08B26/00; G08B17/00; (IPC1-7): G08B17/00
Domestic Patent References:
| JP59201193A | ||||
| JP58127292A |
Attorney, Agent or Firm:
Takeuchi Susumu
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