Environmental detection system useful for fire detection and ...

United States Patent [191 Shaw et al.

[54] ENVIRONMENTAL DETECTION SYSTEM USEFUL FOR FIRE DETECTION AND SUPPRESSION

[75] Inventors: Bon F. Shaw, Winter Park; Gary M. Bond, Orlando; Randy R. Fields, Winter Park, all of Fla.

[73] Assignee: Fike Corporation, Blue Springs, Mo.

[21] Appl. No.: 568,862 [22] Filed: Aug. 17, 1990

Related US. Application Data

[62] Division of Ser. No. 181,644, Apr. 14, 1988, Pat. No. 4,977,527.

[51] Int. Cl.5 ............................................ .. G08B 29/00

[52] US. Cl. ................................ .. 364/550; 340/501 [58] Field of Search ............ .. 364/550, 571.03, 551.01;

340/501, 506, 516, 515, 514, 628, 630, 636

[56] References Cited

U.S. PATENT DOCUMENTS

4,138,670 2/1979 Schneider et al. ................ .. 340/507

4,195,286 3/1980 Galvin . . . . . . . . . . . . . . . . . . . .. 340/501

4,507,652 3/1985 Vogt et al. ..... .. 340/501 4,520,353 5/1985 McAuliffe . . . . . . . . . . .. 340/636

4,555,695 11/1985 Machida et al. .. ..... .. 340/538

4,757,303 7/1988 Scheidweiler .. 340/501 364/550

lllllllllllllllllllllllllllllllllllllIllllIllllllllllllllllllllllllllllllll US00510537OA

[11] Patent Number:

[45] Date of Patent: 5,105,370

Apr. 14, 1992

4,825,195 4/1989 Berruyer ........................... .. 340/501

4,884,222 11/1989 Nagashima et al. .. .... .. 364/550

4,910,692 3/ 1990 Outram et al. .................... .. 364/550

Primary Examiner-Parshotam S. Lall Assistant Examiner—S. A. Melnick Attorney, Agent, or Firm-—Hovey, Williams, Timmons & Collins

[57] ABSTRACT An environmental detection system particularly useful for ?re detection and suppression is provided which ensures high reliability in operation and high reliability in preventing false operation. The preferred system includes a microprocessor-based, software-govemed, control panel connected to one or more detector loops. Each loop includes a plurality of parallel-coupled, ad dressable detectors which send analog signals to the control panel representative of an environmental pa rameter such as smoke obscuration along with reference and identi?cation signals. The preferred system pro vides automatic calibration and test of the detectors, automatic testing under load of the backup batteries, ?exibility in de?ning the protective scheme, and storage of history information concerning system alarms and troubles. The preferred system also veri?es alarm con ditions before actuating an alarm or discharging a ?re suppressant.

4,796,205 1/1989 Ishii et al. . 4,823,290 4/1989 Fasack et al. ..................... .. 364/550 11 Claims, 22 Drawing Sheets

0 cu 300

256 / WATCHDOG jog BATT. TEST v. AUD. ALARM

304 / EH0 [312 w ERl T 51“ 35:22 STROBE INPUT DRIVER ‘lffo'g?go'l

314 DISPLAY

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RECQ'EJTAFE <‘,-_>LPOw£R SUPPLY {

‘:9’ DETECTOR MODULES "\200

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. Patent Apr. 14, 1992 Sheet 1 0f 22 5,105,370

200 0 POWER ,_./ Fig.1. SUPPLY

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MODULE 36

3 a I DETECTOR é 3 MODULE 1 i ‘v

(600 DETECTOR LOOP 54

US. Patent Apr. 14, 1992 Sheet 4 0f 22 5,105,370

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US. Patent Apr. 14, 1992 Sheet 5 of 22 5,105,370

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5,105,370 1 Sheet 7 of 22 Apr. 14, 1992

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U.S. Patent

US. Patent

( ENTER )

DEACTIVATE : I/o’s RELAYS, LED'S e.’

AUDIBLE. DISH :‘sYs. RESET“ BACKLIGHT ON.

D|5P.:“UNIT TEST " ACTIVATE AUDIBLE

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Apr. 14, 1992

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Sheet 10 of 22 5,105,370

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STARTUP / RESET

INIT. 5Y5. RAM RESET=T

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1338 N 540

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US. Patent Apr. 14, 1992 Sheet 11 0f 22 5,105,370

654) g3 @ 0o. “ SET 9 "

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US. Patent I Apr.14, 1992 Sheet 14 of 22 5,105,370

SET Q (EB SET 1oopv= 26.5 Fig.15.

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US. Patent Apr. 14, 1992

DISP Z“CHECK FIRE LEVELS"

RETRIEVE SENSITIVITY “5" FOR EACH DET. FOR MOD.L

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U.S. Patent Apr. 14, 1992 Sheet 17 of 22 5,105,370

w,@ '8” ~ . Fig.18. CALC ZAVG‘. VAL 13,1517 I824 OVER LAST 4 PASSES Y /

T ACT- INTEG- R EAD DE TECTORS SET: LOOP v.=3a.5 FOR 15

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1 INCH c'rR‘MLARMs' 2030

15W) (AVE-5)) ALARM

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Environmental detection system useful for fire detection and ...

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