The accompanying drawings illustrate the present invention. In such drawings:
The present invention is directed to a system for detecting smoke and/or carbon monoxide. As shown in
The satellite units 14 come in multiple variations as depicted in
The system 10 may be installed in a structure such that one or more base units 12 are distributed throughout the structure to provide adequate hazard detection coverage to ensure the safety of those inside the structure. As described above, each of the base units 12 includes a radio frequency transmitter 22 and multiple detection means 17, 19, 21. When one of the detection means 17, 19, 21 detects the presence of a hazard, i.e., smoke or carbon monoxide, the radio frequency transmitter 22 broadcasts a signal to activate the multiple satellite units 14.
The multiple satellite units 14 may be distributed throughout a structure 42 as shown in
Each of the above described satellite units 14 include a radio frequency receiver 40 as described above. This radio frequency receiver 40 is configured to receive the signal broadcast by the radio frequency transmitter 22 in the base unit 12. When the radio frequency receiver 40 receives the broadcast signal from the radio frequency transmitter 22, the satellite units 14 activate the various alert means included thereon.
In practice this method of operation results in a greater level of safety for persons in the structure 42 in the event of a hazard. The use of the radio frequency transmitter 22 and radio frequency receiver 40 permits the simultaneous activation of every satellite unit 14 in the structure 42 to ensure that all persons are alerted to a hazard at the same time. In this way, persons on the opposite side of a structure 42 from a detected hazard may receive warning before the hazard reaches their area of the structure.
In an alternate embodiment, in addition to the base unit 12 having a radio frequency transmitter 22 and detection means 17, 19, 21, each satellite unit 14 may also include a radio frequency transmitter 22 and detection means 17, 19, 21. Further, each base unit 12 may include a radio frequency receiver 40 and one of the various alert means 28, 34, 36, 38. In this way, the inventive system 10 may accomplish the above stated purposes with a minimum of base units 12 and satellite units 14 installed in the structure. Each base unit 12 and satellite unit 14 is capable of detecting a hazard and broadcasting a radio frequency signal to activate the various alert means 28, 30, 34, 36, 38. Similarly, each base unit 12 is equipped with its own alert means 28, 30, 34, 36, 38 which is activated when the radio frequency receiver 40 contained therein receives a signal broadcast by a radio frequency transmitter 22 located in either a base unit 12 or satellite unit 14. This embodiment allows for a system 10 designed to achieve the purposes of this invention with the least number of units 12, 14 installed in the structure.
The components of the system 10 have increased moisture and coercion resistance through the application of a spray-on silicon. Spray-on silicon protects the circuits and other electronic components of the base units 12 and satellite units 14 from corrosion or degradation due to moisture in the air. This improved corrosion resistance increases the effective life span of the units 12, 14.
Although several embodiments of the present invention have been described in detail for purposes of illustration, various modifications of each may be made without departing from the spirit and scope of the invention. Accordingly, the invention is not to be limited, except as by the appended claims.