Multi-function combustion detecting device

• US 4,302,753 A
• Filed: 01/26/1978
• Issued: 11/24/1981
• Est. Priority Date: 01/26/1978
• Status: Expired due to Term

• Current Assignee: Pittway Corporation (Honeywell International Inc.)
• Original Assignee: Pittway Corporation (Honeywell International Inc.)
• Inventors: Conforti, Frederick J.
• Primary Examiner(s): Swann, III, Glen R.
• Application Number:
  US05/872,444
• Time in Patent Office: 1,398 Days
• Field of Search: 340/629, 340/628, 340/630, 340/506, 340/511, 340/533, 340/636
• US Class Current: 340/628
• CPC Class Codes: G08B 17/00 Fire alarms; Alarms responsive to explosion
• CPC Class Codes: G08B 17/10 Actuation by presence of smoke or gases , e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
• CPC Class Codes: G08B 17/11 using an ionisation chamber for detecting smoke or gas
• CPC Class Codes: G08B 29/043 of fire detection circuits
• CPC Class Codes: G08B 29/24 Self-calibration, e.g. compensating for environmental drift or ageing of components

Abstract

A battery powered products of combustion detector and warning device, which is interconnectable in a detecting system with other similar devices, is characterized by means for providing separate, distinct and sensibly perceptible signals representative of (a) a standby or quiescent condition of the device, (b) the energy level of the battery decreasing to at least a predetermined level, (c) the sensitivity of the device to the phenomena decreasing to at least a selected level, (d) detection by the device of the occurrence of the phenomena, or (e) detection of the phenomena by another warning device interconnected therewith. In consequence, a user of the warning device is readily and continuously apprised of the operating condition and state of the device.

Claims

1. An improved warning device, comprising means for detecting the occurrence of predetermined phenomena;

means for interconnecting said device with at least one other warning device which generates an interconnect signal when the other warning device detects said predetermined phenomena, and indicator means for generating a first sensibly discernible signal in response to said detecting means detecting said phenomena, a second sensibly discernible signal in response to the occurrence of the interconnect signal, a third sensibly discernible signal whenever neither of said first and second signals is being generated and means for monitoring the sensitivity of said detector means to said phenomena, said indicator means generating a fourth sensibly discernable signal in response to said sensitivity decreasing to at least a selected level, said indicator means generating said third sensibly discernable signal whenever none of said first, second and fourth signals is being generated.

2. An improved warning device as in claim 1, said device being battery powered, and including means for monitoring the voltage level of the battery, said indicator means generating a fourth sensibly discernible signal in response to said battery voltage decreasing to at least a selected level, said indicator means generating said third sensibly discernible signal whenever none of said first, second and fourth signals is being generated.

3. An improved battery powered warning device, comprising means for detecting the occurrence of predetermined phenomena;

means for monitoring the voltage level of the battery;

means for monitoring the sensitivity of said detecting means to said phenomena, and indicating means for generating a first sensibly discernible signal in response to said detecting means detecting said phenomena, a second sensibly discernible signal in response to said battery voltage decreasing to at least a selected level, a third sensibly discernible signal in response to said sensitivity decreasing to at least a selected level, and a fourth sensibly discernible signal whenever none of said first, second and third signals is being generated.

4. An improved warning device as in claim 3, including means for connecting said device with at least one other warning device which generates an interconnect signal when the other warning device detects said predetermined phenomena, said indicator means generating a fifth sensibly discernible signal in response to the interconnect signal, said indicator means generating said fourth sensibly discernible signal whenever none of said first, second, third and fifth signals is being generated.

5. An improved warning device, comprising means for detecting the occurrence of predetermined phenomena and for generating a first voltage signal in response thereto;

means for connecting said warning device with at least one other warning device which generates an interconnect voltage signal when the other warning device detects said predetermined phenomena;

first indicator means for generating first and second sensibly discernible signals, and second indicator means for generating third and fourth sensibly discernible signals, said first and second indicator means being responsive to;

(a) the absence of said first voltage signal and the interconnect voltage signal to generate said first sensibly discernible signal, (b) the presence of said first voltage signal and the absence of the interconnect signal to generate said second and fourth sensibly discernible signals, and (c) the absence of said first voltage signal and the presence of the interconnect signal to generate said first and fourth sensibly discernible signals.

6. An improved warning device as in claim 5, including means for monitoring the sensitivity of said detecting means to said phenomena and for generating a second voltage signal upon said sensitivity decreasing to at least a selected level, said first and second indicating means being responsive to:

(a) the absence of said first and the interconnect voltage signals and the presence of said second voltage signal for generating said first and third sensibly discernible signals, and (b) the absence of said first, second and the interconnect voltage signals for generating said first sensibly discernible signal.

7. An improved warning device as set forth in claim 5, including means for monitoring the sensitivity of said detecting means to said phenomena and for generating a second voltage signal upon said sensitivity decreasing to at least a selected level, said first and second indicating means being response to:

(a) the absence of said first and the interconnect voltage signals and the presence of said second voltage signal for generating said third sensibly discernible signal, and (b) the absence of said first, second and the interconnect voltage signals for generating said first sensibly discernible signal.

8. An improved warning device as in claim 6, said device being battery powered, including means for monitoring the voltage level of said battery and for generating a second voltage signal upon the voltage level decreasing to at least a predetermined level, said first and second indicator means being responsive to:

(a) the absence of said first and the interconnect voltage signals and the presence of said second voltage signal to generate said third sensibly discernible signal, and (b) the absence of said first, second and the interconnect voltage signals for generating said first sensibly discernible signal.

9. An improved warning device as in claim 5, said device being battery powered, including means for monitoring the voltage level of said battery and for generating a second voltage signal upon the voltage level decreasing to at least a predetermined level, said first and second indicator means being responsive to:

(a) the absence of said first and the interconnect voltage signals and the presence of said second voltage signal to generate said first and third sensibly discernible signals, and (b) the absence of said first, second and the interconnect voltage signals for generating said first sensibly discernible signal.

10. An improved warning device as in claim 5, said device being battery powered, including means for monitoring the sensitivity of said detecting means to said phenomena and for generating a second voltage signal upon said sensitivity decreasing to at least a selected level, and means for monitoring the voltage level of said battery and for generating a third voltage signal upon the voltage level decreasing to at least a predetermined level, said first and second indicator means being responsive to:

(a) the absence of said first, second and the interconnect voltage signals and the presence of said third voltage signal to generate said third sensibly discernible signal;

(b) the absence of said first, third and the interconnect voltage signals and the presence of said second voltage signal for generating said first and third sensibly discernible signals, and (c) the absence of said first, second, third and the interconnect voltage signals for generating said first sensibly discernible signal.

11. An improved warning device as in claim 5, said device being battery powered, including means for monitoring the sensitivity of said detecting means to said phenomena and for generating a second voltage signal upon said sensitivity decreasing to at least a selected level, and means for monitoring the voltage level of said battery and for generating a third voltage signal upon the voltage level decreasing to at least a predetermined level, said first and second indicator means being responsive to:

(a) the absence of said first, second and the interconnect voltage signals and the presence of said third voltage signal to generate said first and third sensibly discernible signals;

(b) the absence of said first, third and the interconnect voltage signals and the presence of said second voltage signal for generating said third sensibly discernible signal, and (c) the absence of said first, second, third and the interconnect voltage signals for generating said first sensibly discernible signal.

12. An improved warning device as in claim 10, said predetermined phenomena being products of combustion, said first indicator means being a lamp and said first and second sensibly discernible signals being an intermittent illumination and a constant illumination, respectively, of said lamp, said second indicator means being an audible alarm and said third and fourth sensibly discernible signals being an intermittent sounding and a continuous sounding, respectively, of said audible alarm.

13. An improved warning device as in claim 11, said predetermined phenomena being products of combustion, said first indicator means being a lamp and said first and second sensibly discernible signals being an intermittent illumination and a constant illumination, respectively, of said lamp, said second indicator means being an audible alarm and said third and fourth sensibly discernible signals being an intermittent sounding and a continuous sounding, respectively, of said audible alarm.

14. An improved battery powered warning device, comprising means for detecting the occurrence of predetermined phenomena and for generating a first voltage signal in response thereto;

means for monitoring the voltage level of the battery and for generating a second voltage signal upon the voltage level decreasing to at least a predetermined level;

means for monitoring the sensitivity of said detecting means to said phenomena and for generating a third voltage signal upon said sensitivity decreasing to at least a selected level;

first indicator means for generating first and second sensibly discernible signals, and second indicator means for generating third and fourth sensibly discernible signals, said first and second indicator means being responsive to;

(a) the absence of said first, second and third voltage signals for generating said first sensibly discernible signal;

(b) the presence of said first voltage signal and the absence of said second and third voltage signals for generating said second and fourth sensibly discernible signals;

(c) the presence of said second voltage signal and the absence of said first and third voltage signals for generating said third sensibly discernible signal, and (d) the presence of said third voltage signal and the absence of said first and second voltage signals for generating said first and third sensibly discernible signals.

15. An improved battery powered warning device as in claim 14, including means for connecting said warning device with at least one other warning device which generates an interconnect voltage signal when the other warning device detects said predetermined phenomena, said first and second indicating means being responsive to the presence of the interconnect voltage signal and to the absence of said first, second and third voltage signals for generating said first and said fourth sensibly discernible signals, and to the absence of said first, second, third and the interconnect voltage signals for generating said first sensibly discernible signal.

16. An improved battery powered warning device, comprising means for detecting the occurrence of predetermined phenomena and for generating a first voltage signal in response thereto;

means for monitoring the voltage level of the battery and for generating a second voltage signal upon the voltage level decreasing to at least a predetermined level;

means for monitoring the sensitivity of said detecting means to said phenomena and for generating a third voltage signal upon said sensitivity decreasing to at least a selected level;

first indicator means for generating first and second sensibly discernible signals, and second indicator means for generating third and fourth sensibly discernible signals, said first and second indicator means being responsive to;

(a) the absence of said first, second and third voltage signals for generating said first sensibly discernible signal;

(b) the presence of said first voltage signal and the absence of said second and third voltage signals for generating said second and fourth sensibly discernible signals;

(c) the presence of said second voltage signal and the absence of said first and third voltage signals for generating said first and third sensibly discernible signals, and (d) the presence of said third voltage signal and the absence of said first and second voltage signals for generating said third sensibly discernible signal.

17. An improved battery powered warning device, comprising means for detecting the occurrence of a predetermined phenomena and for generating a first voltage signal in response thereto;

means for monitoring the voltage level of the battery and for generating a second voltage signal upon the voltage level decreasing to at least a predetermined level;

means for monitoring the sensitivity of said detecting means to said phenomena and for generating a third voltage signal upon the sensitivity decreasing to at least a selected level;

means for connecting said warning device with at least one other warning device which generates an interconnect voltage signal when the other warning device detects said predetermined phenomena;

first indicator means for generating first and second sensibly discernible signals, and second indicator means for generating third and fourth sensibly discernible signals, said first and second indicator means being responsive to;

(a) the absence of said first, second, third and the interconnect voltage signals for generating said first sensibly discernible signal;

(b) the presence of said first voltage signal and the absence of said second, third and the interconnect voltage signals for generating said second and fourth sensibly discernible signals;

(c) the presence of said second voltage signal and the absence of said first, third and the interconnect voltage signals for generating said third sensibly discernible signal;

(d) the presence of said third voltage signal and the absence of said first, second and the interconnect voltage signals for generating said first and third sensibly discernible signals, and (e) the presence of the interconnect signal and the absence of said first, second and third voltage signals for generating said first and fourth sensibly discernible signals.

18. An improved battery powered warning device as in claim 17, said predetermined phenomena being products of combustion, said first indicator means being a lamp and said first and second sensibly discernible signals being an intermittent illumination and a constant illumination, respectively, of said lamp, and said second indicator means being an audible alarm and said third and fourth sensibly discernible signals being an intermittent sounding and a continuous sounding, respectively, of said audible alarm.

19. An improved battery powered warning device, comprising means for detecting the occurrence of a predetermined phenomena and for generating a first voltage signal in response thereto;

means for monitoring the voltage level of the battery and for generating a second voltage signal upon the voltage level decreasing to at least a predetermined level;

means for monitoring the sensitivity of said detecting means to said phenomena and for generating a third voltage signal upon the sensitivity decreasing to at least a selected level;

means for connecting said warning device with at least one other warning device which generates an interconnect voltage signal when the other warning device detects said predetermined phenomena and for receiving the interconnect signal;

first indicator means for generating first and second sensibly discernible signals, and second indicator means for generating third and fourth sensibly discernible signals, said first and second indicator means being responsive to;

(a) the absence of said first, second, third and the interconnect voltage signals for generating said first sensibly discernible signal;

(b) the presence of said first voltage signal and the absence of said second, third and the interconnect voltage signals for generating said second and fourth sensibly discernible signals;

(c) the presence of said second voltage signal and the absence of said first, third and the interconnect voltage signals for generating said first and third sensibly discernible signals;

(d) the presence of said third voltage signal and the absence of said first, second and the interconnect voltage signals for generating said third sensibly discernible signal, and (e) the presence of the interconnect signal and the absence of said first, second and third voltage signals for generating said first and fourth sensibly discernible signals.

20. An improved battery powered warning device as in claim 19, said predetermined phenomena being products of combustion, said first indicator means being a lamp and said first and second snesibly discernible signals being an intermittent illumination and a constant illumination, respectively, of said lamp, and said second indicator means being an audible alarm and said third and fourth sensibly discernible signals being an intermittent sounding and a continuous sounding, respectively, of said audible alarm.