Environmental abnormality alarm apparatus

Details Environmental abnormality alarm apparatus Environmental abnormality alarm apparatus

1988-03-21

1990-05-08

Lall, Parshotam S.

Boots, shoes, and leggings

365185, 340500, 34082508, 340506, G08B 2600, G08B 2300

Patent

active

049244175

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.

REFERENCES:
patent: 4420746 (1983-12-01), Malinowski
patent: 4525700 (1985-06-01), Kimura et al.
patent: 4581604 (1986-04-01), Kimura et al.
patent: 4638304 (1987-01-01), Kimura et al.
patent: 4658243 (1987-04-01), Kimura et al.
patent: 4668939 (1987-05-01), Kimura et al.
patent: 4740787 (1988-04-01), Kimura
patent: 4745399 (1988-05-01), Kimura
patent: 4750142 (1988-06-01), Akiba et al.
patent: 4785284 (1988-11-01), Kimura
patent: 4797664 (1989-01-01), Kimura
patent: 4803469 (1989-02-01), Matsushita
patent: 4816808 (1989-03-01), Morita
patent: 4831361 (1989-05-01), Kimura

Affiliated with

Also associated with

Rating

Environmental abnormality alarm apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Environmental abnormality alarm apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Environmental abnormality alarm apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2354428