CH681932A5 - - Google Patents
Download PDFInfo
- Publication number
- CH681932A5 CH681932A5 CH3822/90A CH382290A CH681932A5 CH 681932 A5 CH681932 A5 CH 681932A5 CH 3822/90 A CH3822/90 A CH 3822/90A CH 382290 A CH382290 A CH 382290A CH 681932 A5 CH681932 A5 CH 681932A5
- Authority
- CH
- Switzerland
- Prior art keywords
- ionization
- signal
- operating voltage
- output signal
- voltage
- Prior art date
Links
- 239000000779 smoke Substances 0.000 claims description 65
- 230000015654 memory Effects 0.000 claims description 24
- 238000001514 detection method Methods 0.000 claims description 21
- 230000002285 radioactive effect Effects 0.000 claims description 21
- 238000005259 measurement Methods 0.000 claims description 9
- 239000000443 aerosol Substances 0.000 claims description 8
- 238000011156 evaluation Methods 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 7
- 230000011664 signaling Effects 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000003321 amplification Effects 0.000 claims description 4
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims 1
- 150000002500 ions Chemical class 0.000 description 21
- 238000009833 condensation Methods 0.000 description 11
- 230000005494 condensation Effects 0.000 description 11
- 239000003570 air Substances 0.000 description 10
- 230000008859 change Effects 0.000 description 5
- 230000001960 triggered effect Effects 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000035515 penetration Effects 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 4
- 239000012080 ambient air Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000010257 thawing Methods 0.000 description 3
- 238000011109 contamination Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 206010069201 Smoke sensitivity Diseases 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
- G08B29/18—Prevention or correction of operating errors
- G08B29/20—Calibration, including self-calibrating arrangements
- G08B29/24—Self-calibration, e.g. compensating for environmental drift or ageing of components
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
- G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas
-
- 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
- G08B29/18—Prevention or correction of operating errors
- G08B29/20—Calibration, including self-calibrating arrangements
- G08B29/24—Self-calibration, e.g. compensating for environmental drift or ageing of components
- G08B29/26—Self-calibration, e.g. compensating for environmental drift or ageing of components by updating and storing reference thresholds
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire-Detection Mechanisms (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH3822/90A CH681932A5 (en, 2012) | 1990-12-04 | 1990-12-04 | |
| EP91115061A EP0489232A1 (de) | 1990-12-04 | 1991-09-06 | Brandmeldeanlage mit Ueberwachung |
| US07/801,538 US5243330A (en) | 1990-12-04 | 1991-12-02 | Fire detector system and method |
| CA002056768A CA2056768A1 (en) | 1990-12-04 | 1991-12-03 | Fire detector system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH3822/90A CH681932A5 (en, 2012) | 1990-12-04 | 1990-12-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH681932A5 true CH681932A5 (en, 2012) | 1993-06-15 |
Family
ID=4264216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH3822/90A CH681932A5 (en, 2012) | 1990-12-04 | 1990-12-04 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5243330A (en, 2012) |
| EP (1) | EP0489232A1 (en, 2012) |
| CA (1) | CA2056768A1 (en, 2012) |
| CH (1) | CH681932A5 (en, 2012) |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5543777A (en) * | 1993-07-12 | 1996-08-06 | Detection Systems, Inc. | Smoke detector with individual sensitivity calibration and monitoring |
| US5552765A (en) * | 1993-07-12 | 1996-09-03 | Detection Systems, Inc. | Smoke detector with individually stored range of acceptable sensitivity |
| US6426703B1 (en) | 1997-08-07 | 2002-07-30 | Brk Brands, Inc. | Carbon monoxide and smoke detection apparatus |
| US6326880B1 (en) | 1998-09-30 | 2001-12-04 | Pittway Corporation | Detector with control switch |
| US8366769B2 (en) | 2000-06-01 | 2013-02-05 | Edwards Lifesciences Corporation | Low-profile, pivotable heart valve sewing ring |
| US7408148B2 (en) * | 2006-06-26 | 2008-08-05 | Nucsafe, Inc. | Method and apparatus for minimizing the effect of baseline depression in ionizing radiation measuring equipment |
| GB0613882D0 (en) * | 2006-07-12 | 2006-08-23 | Kidde Ip Holdings Ltd | Smoke detector |
| US9467141B2 (en) | 2011-10-07 | 2016-10-11 | Microchip Technology Incorporated | Measuring capacitance of a capacitive sensor with a microcontroller having an analog output for driving a guard ring |
| US9437093B2 (en) * | 2011-10-06 | 2016-09-06 | Microchip Technology Incorporated | Differential current measurements to determine ION current in the presence of leakage current |
| US9257980B2 (en) | 2011-10-06 | 2016-02-09 | Microchip Technology Incorporated | Measuring capacitance of a capacitive sensor with a microcontroller having digital outputs for driving a guard ring |
| US8847802B2 (en) | 2011-10-06 | 2014-09-30 | Microchip Technology Incorporated | Microcontroller ADC with a variable sample and hold capacitor |
| US9071264B2 (en) | 2011-10-06 | 2015-06-30 | Microchip Technology Incorporated | Microcontroller with sequencer driven analog-to-digital converter |
| US9252769B2 (en) | 2011-10-07 | 2016-02-02 | Microchip Technology Incorporated | Microcontroller with optimized ADC controller |
| US9176088B2 (en) | 2011-12-14 | 2015-11-03 | Microchip Technology Incorporated | Method and apparatus for detecting smoke in an ion chamber |
| US9189940B2 (en) | 2011-12-14 | 2015-11-17 | Microchip Technology Incorporated | Method and apparatus for detecting smoke in an ion chamber |
| US9207209B2 (en) | 2011-12-14 | 2015-12-08 | Microchip Technology Incorporated | Method and apparatus for detecting smoke in an ion chamber |
| US9823280B2 (en) | 2011-12-21 | 2017-11-21 | Microchip Technology Incorporated | Current sensing with internal ADC capacitor |
| US8884771B2 (en) | 2012-08-01 | 2014-11-11 | Microchip Technology Incorporated | Smoke detection using change in permittivity of capacitor air dielectric |
| US10140831B2 (en) * | 2014-06-03 | 2018-11-27 | Carrier Corporation | Ionization air filters for hazardous particle detection |
| EP3482381B1 (en) | 2016-07-11 | 2024-03-20 | Autronica Fire & Security AS | Smoke detector dynamic range adjustment system and method |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1101370B (de) * | 1956-01-27 | 1961-03-09 | Messen Jaschin G A | Einrichtung zur elektrischen Beladung von in einem Luftstrom suspendierten Partikeln mittels radioaktiver Praeparate |
| US3964036A (en) * | 1972-11-15 | 1976-06-15 | Hochiki Corporation | Ionization smoke detector co-used to issue fire alarm and detect ambient atmosphere |
| CH551057A (de) * | 1973-04-17 | 1974-06-28 | Cerberus Ag | Ionisationsfeuermelder. |
| US3866195A (en) * | 1973-05-07 | 1975-02-11 | Fire Alert Company | Combustion product detector and method of calibrating |
| AU6988674A (en) * | 1973-06-22 | 1975-12-11 | Honeywell Inc | Smoke detector |
| DD106917A1 (en, 2012) * | 1973-09-26 | 1974-07-05 | ||
| ZA745453B (en) * | 1974-08-26 | 1976-04-28 | Anglo Amer Corp South Africa | Improvements in or relating to fire detectors |
| JPS51100085U (en, 2012) * | 1975-02-10 | 1976-08-11 | ||
| US4300133A (en) * | 1977-03-28 | 1981-11-10 | Solomon Elias E | Smoke detector |
| US4288694A (en) * | 1977-11-02 | 1981-09-08 | Motorola, Inc. | High-impedance IGFET input circuit suitable for smoke detector I.C. |
| ZA785255B (en) * | 1978-09-15 | 1979-12-27 | Anglo Amer Corp South Africa | Alarm system |
| US4401978A (en) * | 1979-02-21 | 1983-08-30 | The Gamewell Corporation | Combination detector |
| CA1148279A (en) * | 1979-12-14 | 1983-06-14 | Andreas Scheidweiler | Ionization smoke detector with increased operational reliability |
| DE3127324A1 (de) * | 1981-07-10 | 1983-01-27 | Siemens AG, 1000 Berlin und 8000 München | Verfahren und anordnung zur erhoehung der ansprechempfindlichkeit und der stoersicherheit in einer gefahren-, insbesondere brandmeldeanlage |
| US4455553A (en) * | 1982-05-17 | 1984-06-19 | Pyrotector, Inc. | Smoke detector of the ionization type |
| DE3904979A1 (de) * | 1989-02-18 | 1990-08-23 | Beyersdorf Hartwig | Verfahren zum betrieb eines ionisationsrauchmelders und ionisationsrauchmelder |
-
1990
- 1990-12-04 CH CH3822/90A patent/CH681932A5/de not_active IP Right Cessation
-
1991
- 1991-09-06 EP EP91115061A patent/EP0489232A1/de not_active Withdrawn
- 1991-12-02 US US07/801,538 patent/US5243330A/en not_active Expired - Fee Related
- 1991-12-03 CA CA002056768A patent/CA2056768A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| EP0489232A1 (de) | 1992-06-10 |
| CA2056768A1 (en) | 1992-06-05 |
| US5243330A (en) | 1993-09-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CH681932A5 (en, 2012) | ||
| DE2857262C2 (de) | Verfahren zum Nachweis von Gasen | |
| EP0345798B1 (de) | Brandmeldeanlage | |
| DE69428173T2 (de) | Sensorvorrichtung und elektronische Anlage mit eingebauter Sensorvorrichtung | |
| EP3381020B1 (de) | Verfahren zum bestimmen von schwellenwerten einer zustandsüberwachungseinheit für eine brandmelder- und/oder löschsteuerzentrale sowie zustandsüberwachungseinheit und system damit | |
| EP0039761A2 (de) | Verfahren zur Brandmeldung und Brandmeldeanlage | |
| DE1766440A1 (de) | Feuermeldeanlage | |
| DE2029794C3 (de) | Ionisationsfeuermelder | |
| EP0338218A1 (de) | Verfahren zur Brandfrüherkennung | |
| EP0121048A1 (de) | Schaltungsanordnung zur Störpegel-Überwachung von Meldern, die in einer Gefahrenmeldeanlage angeordnet sind | |
| DE2923119A1 (de) | Detektor fuer feuer, rauch o.dgl. | |
| EP0042501A1 (de) | Einrichtung zur Übertragung von Messwerten in einem Brandmeldesystem | |
| DE69221737T2 (de) | Nachweis von teilchen in einer gasströmung | |
| EP0423489A1 (de) | Brandmeldeanlage mit Ueberwachung | |
| DE1907587B2 (de) | Verfahren und einrichtung zum erzeugen von alarm | |
| DE2023114A1 (de) | Einbruchsschutzeinrichtung | |
| EP0384209B1 (de) | Verfahren zum Betrieb eines Ionisationsrauchmelders und Ionisationsrauchmelder | |
| DE1081804B (de) | Feuermeldeanlage | |
| DE2459175B2 (de) | Notalarmeinrichtung | |
| DE2528764A1 (de) | Schaltungsanordnung zur ueberwachung von feuermeldern | |
| EP0098326B1 (de) | Schaltungsanordnung für eine Gefahrenmeldeanlage | |
| DE2329580A1 (de) | Einbruchsalarmanlage | |
| DE2946507A1 (de) | Detektor, insbesondere feuerdetektor | |
| DE10300848B4 (de) | Brandschalter für Lüftungsanlagen | |
| DE2454196B2 (de) | Brandmelder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased |