Importance

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Abstract

There is disclosed a multi-zone microprocessor fire control apparatus. The control apparatus employs a microprocessor which monitors a plurality of zones. Each zone may be associated with a smoke detector and which smoke detector will provide a predetermined condition when smoke is present in a zone. The microprocessor is controlled to monitor each zone by scanning the zones in a predetermined sequence. The microprocessor is associated with the key pad. According to the present invention, the key pad is accessed by a serviceman who inserts a given code into the key pad indicative of a one man test mode. The microprocessor recognizes the selection of this mode and therefore anticipates receiving an alarm condition due to the fact that the serviceman, after accessing the key pad, will enter a selected zone to provide an intentional alarm at that zone. Based on the fact that the microprocessor recognizes the selection of this one man test mode, the microprocessor will expect an alarm from the selected zone and will notify the serviceman by providing an audible alarm after the serviceman has intentionally caused the alarm. In this manner the serviceman can access each of the zones selected to verify proper operation by intentionally causing an alarm at each zone without causing the system to provide a normal output alarm signal which would occur upon the existence of true smoke conditions in a zone. There are other modes of operation during this test mode which enable the microprocessor to selectively inform a serviceman of conditions at selected zones by enabling the serviceman to repair such conditions as necessary.

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First Claim