Title:
【発明の名称】環境異常警報装置
Document Type and Number:
Japanese Patent JPH0632144
Kind Code:
B2
Abstract:
An enviromental abnormality alarm apparatus includes a plurality of terminals connected to a transmission line and a central processing unit. A specific address is assigned to each of the terminals. The central processing unit sequentially circularly accesses the addresses of the terminals and receives a signal corresponding to a physical change such as a fire, gas leakage, or burglary supplied from each terminal. Each terminal includes an alarm determination reference setting unit, a comparator for comparing the physical change signal with an alarm determination reference value, and an output unit for supplying a comparison result from the comparator. The alarm determination reference value of the alarm determination reference setting unit is set by transmitting and receiving data to and from the central processing unit.
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Inventors:
YUASA HAYAMI
Application Number:
JP8465087A
Publication Date:
April 27, 1994
Filing Date:
April 08, 1987
Export Citation:
Assignee:
NITTAN CO LTD
International Classes:
G08B23/00; G08B25/00; G08B26/00; G08B29/16; G08B29/22; G08B29/26; (IPC1-7): G08B23/00; G08B29/22
Domestic Patent References:
| JP6154598A | ||||
| JP61189397U |
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