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AssigneeSafenight Technology Inc.
InventorsScott Markwell, David L. Hanning, Alan Fox, Bill Evans, Jack Ellis, Richard Goldblatt, Bob Matson
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A wireless, battery-operated detection system of a plurality of RF-interconnected detectors is operable over a CSMA-type network and intended to detect the occurrence of a local phenomena and transmit at least one signal to at least one other detector to remotely sound an alarm. Each detector includes a sensor for sensing local phenomena, a transmitter for transmitting RF messages indicative of the phenomena, a receiver for receiving the RF messages, an alarm circuit for sounding an audible alarm indicative of the phenomena and a controller operable to control the mode of operation of each detector, wherein each controller is operable to control all the detectors in the system in response to a stimulus and to control multiple and conflicting signals transmitted among the detectors. The controller includes a prioritization circuit for determining the relative priority of the received RF signals and stimuli indicative of a particular condition to enable the appropriate mode of operation. The controller also includes a timer circuit responsive to the operating mode for enabling the transmitter to transmit RF messages immediately after the receiver is sensed and no longer detects incoming message activity, and where the receiver is sensed at randomized time intervals to reduce the probability of multiple simultaneous transmissions.
A wireless, battery-operated detection system of a plurality of RF-interconnected detectors operable over a CSMA-type network and intended to detect the occurrence of a local phenomena and transmit at least one signal to at least one other detector to remotely sound an alarm, each said detector operable in a plurality of modes including standby, alarm, test, reset, auxiliary and wait, each said detector comprising a sensor for sensing said local phenomena, a transmitter for transmitting amplitude modulated RF messages indicative of said phenomena, a receiver for receiving said RF messages, alarm means for sounding said audible alarm indicative of said phenomena and mode, and a controller operable to control the mode of operation of each said detector, each said controller operable to control all said detectors in said system in response to a stimulus and for controlling multiple and conflicting signals transmitted among said detectors, said controller including
A detector system comprising a plurality of battery-operated sensing devices interconnected over a wireless, CSMA-type RF network and intended to detect the occurrence of a local phenomena and transmit at least one amplitude modulated RF signal to at least one other sensing device to remotely sound an alarm, each said sensing device comprising:
Dependencies are inferred from the claim text.