ATE156286T1 - METHOD FOR PREDETERMINING THE MAINTENANCE TIME OF HAZARD DETECTORS - Google Patents
METHOD FOR PREDETERMINING THE MAINTENANCE TIME OF HAZARD DETECTORSInfo
- Publication number
- ATE156286T1 ATE156286T1 AT92101904T AT92101904T ATE156286T1 AT E156286 T1 ATE156286 T1 AT E156286T1 AT 92101904 T AT92101904 T AT 92101904T AT 92101904 T AT92101904 T AT 92101904T AT E156286 T1 ATE156286 T1 AT E156286T1
- Authority
- AT
- Austria
- Prior art keywords
- rwx
- quiescent value
- predetermining
- rwb
- time
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
- G08B29/12—Checking intermittently signalling or alarm systems
- G08B29/14—Checking intermittently signalling or alarm systems checking the detection circuits
- G08B29/145—Checking intermittently signalling or alarm systems checking the detection circuits of fire detection circuits
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fire-Detection Mechanisms (AREA)
- Alarm Systems (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
- Fire Alarms (AREA)
- Electrophonic Musical Instruments (AREA)
- Geophysics And Detection Of Objects (AREA)
- Burglar Alarm Systems (AREA)
- Emergency Alarm Devices (AREA)
Abstract
A method for predetermining the probable period of time to a no longer permissible change in sensitivity, i.e. the operating life of alarm detectors. In an alarm detector system with quiescent value correction, the probable operating life (tF) of the detector is determined from its change in quiescent value (RWx - RWb) over a certain past period (tV=tx-tb) and its predetermined operating threshold (FS), which can also be a maintenance or disturbance threshold (WS or ST), by extrapolation: tF = (tx-tb) x FS-RWx DIVIDED RWx-RWb , where tx = particular actual time tb = reference time RWx = quiescent value at actual time RWb = quiescent value at reference time. <IMAGE>
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4106025 | 1991-02-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
ATE156286T1 true ATE156286T1 (en) | 1997-08-15 |
Family
ID=6425926
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT92101904T ATE156286T1 (en) | 1991-02-26 | 1992-02-05 | METHOD FOR PREDETERMINING THE MAINTENANCE TIME OF HAZARD DETECTORS |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0501194B1 (en) |
AT (1) | ATE156286T1 (en) |
DE (1) | DE59208736D1 (en) |
ES (1) | ES2106097T3 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2002237013A1 (en) * | 2000-08-30 | 2002-03-13 | General Electric Company | Computerized method and system for determining degradation of dc link capacitors |
FR2829271B1 (en) * | 2001-08-28 | 2005-12-02 | J C Decaux | TELESURVEILLANCE SYSTEM FOR LUMINOUS DISPLAY DEVICE |
WO2005031268A2 (en) * | 2003-09-18 | 2005-04-07 | Siemens Aktiengesellschaft | Measuring device for detecting a threshold value |
GB2537940B (en) | 2015-05-01 | 2018-02-14 | Thorn Security | Fire detector drift compensation |
DE102017200544A1 (en) | 2017-01-13 | 2018-07-19 | Siemens Schweiz Ag | Determination of a lead time for the replacement of an optical smoke detector depending on its contamination |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ZA785255B (en) * | 1978-09-15 | 1979-12-27 | Anglo Amer Corp South Africa | Alarm system |
DE3127324A1 (en) * | 1981-07-10 | 1983-01-27 | Siemens AG, 1000 Berlin und 8000 München | METHOD AND ARRANGEMENT FOR INCREASING THE SENSITIVITY AND EMERGENCY SAFETY IN A DANGER, IN PARTICULAR FIRE DETECTING SYSTEM |
CH669859A5 (en) * | 1986-06-03 | 1989-04-14 | Cerberus Ag | |
US4881060A (en) * | 1988-11-16 | 1989-11-14 | Honeywell Inc. | Fire alarm system |
DE3900456A1 (en) * | 1989-01-10 | 1990-07-12 | Heiland Bernd | Service indicator module |
-
1992
- 1992-02-05 AT AT92101904T patent/ATE156286T1/en active
- 1992-02-05 DE DE59208736T patent/DE59208736D1/en not_active Expired - Fee Related
- 1992-02-05 EP EP92101904A patent/EP0501194B1/en not_active Expired - Lifetime
- 1992-02-05 ES ES92101904T patent/ES2106097T3/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ES2106097T3 (en) | 1997-11-01 |
DE59208736D1 (en) | 1997-09-04 |
EP0501194B1 (en) | 1997-07-30 |
EP0501194A1 (en) | 1992-09-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69317982D1 (en) | Method and system for real-time data collection and display device | |
DK0610224T3 (en) | Method and apparatus for managing a fume cupboard | |
DE3687098D1 (en) | AUTOMATIC PERSONNEL MONITORING SYSTEM. | |
ATE136140T1 (en) | METHOD AND ARRANGEMENT FOR SECURING PERSONS OR OBJECTS | |
EP0568480A3 (en) | Method of and apparatus for providing existential presence acknowledgement. | |
ES2168306T3 (en) | PROMOTION OF THE USE OF A PORTABLE DEVICE FOR THE CONTROL / REGISTRATION OF AUDIENCE PERCENTAGES. | |
NL154894B (en) | TELEVISION TRANSMISSION SYSTEM AND DECODING DEVICE AS A PART THEREOF. | |
FR2424588B1 (en) | METHOD AND DEVICE FOR IMPROVING AN ERROR DETECTION AND CORRECTION SYSTEM | |
EP0186462A3 (en) | A method for detection of manchester-encoded signals | |
ATE156286T1 (en) | METHOD FOR PREDETERMINING THE MAINTENANCE TIME OF HAZARD DETECTORS | |
FR2655564B1 (en) | METHOD AND DEVICE FOR REDUCING THE CONTENT OF ACID POLLUTANT GASES FROM SMOKE FUMES FROM AN INCINERATION DEVICE. | |
DE69616466D1 (en) | Fire alarm system | |
ATE205624T1 (en) | ARRANGEMENT FOR MONITORING A PERSON'S ACTIVITY AND/OR DETECTING A FALL | |
SE9203904D0 (en) | DEVICE FOR MONITORING A ZONE AND POSITION OF OBJECTS WITHIN THIS | |
DE69331224D1 (en) | Use of confirmation signals present in an active line of a television signal for identifying an advertisement contained in a television signal and control circuit for identifying advertisement advertisements after such use | |
IT1152706B (en) | ACCENTUATION CONTROL SYSTEM OF A VIDEO SIGNAL, WITH POSSIBILITY OF AUTOMATIC AND MANUAL CONTROL | |
FR2592718B1 (en) | METHOD AND SYSTEM FOR MONITORING FAILURES OF AT LEAST ONE SOURCE OF LIGHT RADIATION | |
IT1131408B (en) | NETWORK STABILIZED FOR AUTOMATIC BRIGHTNESS CONTROL IN A VIDEO SIGNAL PROCESSOR SYSTEM INCLUDING AN AUTOMATIC LIMITER OF THE CINESCOPE BEAM CURRENT | |
FI945934A0 (en) | Fire alarm system for early detection of fires | |
IE831474L (en) | Detecting the pulse rate of animals | |
ES533356A0 (en) | IMPROVEMENTS IN FIRE DETECTORS EQUIPPED WITH A SENSOR | |
ATE81885T1 (en) | METHOD OF MONITORING STREAM OF GRANULES IN LINES. | |
FI962666A0 (en) | Decoding a data signal transmitted in a television system | |
ATE52632T1 (en) | METHOD AND DEVICE FOR OPERATIONAL MONITORING OF OPTICAL SMOKE DETECTORS. | |
ATE145303T1 (en) | OPERATIONAL SAFE DISABILITY DETECTOR FOR DOOR OPENER |