Warning system for giving verbal instruction during fire and met

Details Warning system for giving verbal instruction during fire and met Warning system for giving verbal instruction during fire and met

1995-05-01

1997-09-02

Mullen, Thomas

Communications: electrical

Condition responsive indicating system

Specified indicator structure

340326, 340628, 340691, G08B 2508

Patent

active

056637144

ABSTRACT:
An alarm system, comprising a smoke detector, a smoke detector output relay, a recording switch, a microphone, a digital recording and a play back device, a timer/pulse generator, a pulse counter, a number of speakers, an amplifier and an alarm tone generator, and the method of operation of the alarm system are presented. The smoke detector output relay activates a printed circuit that is powered off the smoke detector at two different points. The recording switch, when activated, allows a voice message to be recorded through the microphone on a digital recording and play back device. The timer/pulse generator starts when activated by the smoke detector output relay. The timer/pulse generator then sends timed pulses to the pulse counter that controls output of the digital recording and play back device, i.e. a verbal message, and of the alarm tone generator. The controlled output of the digital recording and play back device and of the alarm tone generator is then sent to the amplifier. Then, the output of the amplifier is sent to the number of speakers which send messages and tones, alerting by standing individuals of presence of fire or smoke. The messages and tones may be repeated until the alarm system is reset.

REFERENCES:
patent: 4107464 (1978-08-01), Lynch et al.
patent: 4531114 (1985-07-01), Topol et al.
patent: 4682348 (1987-07-01), Dawson et al.
patent: 4754266 (1988-06-01), Shand et al.
patent: 4816809 (1989-03-01), Kim
patent: 5291183 (1994-03-01), Chiang
patent: 5307051 (1994-04-01), Sedlmayr

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