Fire detection and warning system
First Claim
1. A fire detection system comprising in combination:
- a monitor station including a short wave receiver for information defining the outbreak of fires and fire locations and means for indicating the presence of fires and their locations in an area under surveillance, said fire detection units each comprising;
(a) first means sensitive to the heat of a fire for generating electrical energy,(b) second means for receiving said electrical energy generating code electrical signals,(c) third means energized by said electrical energy for short wave transmitting said code signals,said monitor station being operable to receive short wave code signals indicative of a fire when a fire detection unit becomes activated and means at said monitor station responsive to the received signals for indicating the existence and location of a fire, andtransponder means within receiving range of at least certain of said short wave transmitting means of said fire detection units for receiving signals generated thereby and operable for transmitting code signals indicative of fire and its location to said monitor station.
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Accused Products
Abstract
A fire detection system is provided employing a plurality of electronic fire detection units, each of which is a code generating and short wave transmitting unit which derives electrical energy for powering the unit from the heat of a fire. In one form, each unit is operable to generate a specific code identifying the unit and its location which code is short wave transmitted directly to a monitor station. The receipt and recording or display of the code is an indication of the location of the unit which becomes activated by heat. The extent of the fire can be determined by the number of units which are so activated as indicated by the number of different codes received by the monitor station. Each detection unit is preferably self insulated against immediate destruction of the electronic circuit thereof, to permit the unit to transmit a remotely detectable code. Where the monitor station is a substantial distance from the detection unit, an intermediate transponder receiving and transmitting station is located within range of a given number of such units and is operable to retransmit codes received thereby from those units which are activated by heat, to a remote monitor station. An entire fire detection and monitoring system may be composed of a number of such transponders, each of which is host to a plurality of detection units, the short wave signals of which are within receiving range of the particular transponder associated therewith. One or more of the detection units and transponder units may be powered by batteries which are rechargable by means of solar cells or are held inactivated until the heat of a fire activates the battery.
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Citations
12 Claims
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1. A fire detection system comprising in combination:
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a monitor station including a short wave receiver for information defining the outbreak of fires and fire locations and means for indicating the presence of fires and their locations in an area under surveillance, said fire detection units each comprising; (a) first means sensitive to the heat of a fire for generating electrical energy, (b) second means for receiving said electrical energy generating code electrical signals, (c) third means energized by said electrical energy for short wave transmitting said code signals, said monitor station being operable to receive short wave code signals indicative of a fire when a fire detection unit becomes activated and means at said monitor station responsive to the received signals for indicating the existence and location of a fire, and transponder means within receiving range of at least certain of said short wave transmitting means of said fire detection units for receiving signals generated thereby and operable for transmitting code signals indicative of fire and its location to said monitor station. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 12)
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9. A fire detection system comprising:
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a plurality of fire indicating stations each having means for generating a code signal unique to and identifying the station, a monitor station having code signal receiving means, means at each code indicating station for transmitting the code signals generated by its signal generating means to the receiving means of the monitor station, decoding means at the monitor station and synthetic speech signal generating means connected to said decoding means for generating synthetic speech signals which are indicative of the location of a fire as indicated by the code signals received, and means for transducing the synthetic speech signals generated by said synthetic speech generating means to sounds of words defining the locations of the stations from which code signals are received. - View Dependent Claims (10, 11)
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Specification