CA1311292C - Detecteur differentiel de pression acoustique pour la detection de l'ondeaperiodique consecutive a l'ouverture d'une porte ou fenetre dans un local clos - Google Patents
Detecteur differentiel de pression acoustique pour la detection de l'ondeaperiodique consecutive a l'ouverture d'une porte ou fenetre dans un local closInfo
- Publication number
- CA1311292C CA1311292C CA000581520A CA581520A CA1311292C CA 1311292 C CA1311292 C CA 1311292C CA 000581520 A CA000581520 A CA 000581520A CA 581520 A CA581520 A CA 581520A CA 1311292 C CA1311292 C CA 1311292C
- Authority
- CA
- Canada
- Prior art keywords
- microphone
- comparator
- signal
- voltage
- input
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000035945 sensitivity Effects 0.000 claims abstract description 16
- 238000001514 detection method Methods 0.000 claims description 5
- 230000005284 excitation Effects 0.000 claims description 3
- 238000012986 modification Methods 0.000 claims description 3
- 230000004048 modification Effects 0.000 claims description 3
- 230000033228 biological regulation Effects 0.000 abstract description 8
- 238000001914 filtration Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000010455 autoregulation Effects 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000011085 pressure filtration Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 238000009966 trimming Methods 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
- G08B29/185—Signal analysis techniques for reducing or preventing false alarms or for enhancing the reliability of the system
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/16—Actuation by interference with mechanical vibrations in air or other fluid
- G08B13/1654—Actuation by interference with mechanical vibrations in air or other fluid using passive vibration detection systems
- G08B13/1681—Actuation by interference with mechanical vibrations in air or other fluid using passive vibration detection systems using infrasonic detecting means, e.g. a microphone operating below the audible frequency range
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Measuring Fluid Pressure (AREA)
- Burglar Alarm Systems (AREA)
- Emergency Alarm Devices (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR871502 | 1987-10-30 | ||
| FR8715052A FR2622719A1 (fr) | 1987-10-30 | 1987-10-30 | Detecteur differentiel de pression acoustique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1311292C true CA1311292C (fr) | 1992-12-08 |
Family
ID=9356331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000581520A Expired - Lifetime CA1311292C (fr) | 1987-10-30 | 1988-10-27 | Detecteur differentiel de pression acoustique pour la detection de l'ondeaperiodique consecutive a l'ouverture d'une porte ou fenetre dans un local clos |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0317459B1 (de) |
| AT (1) | ATE75063T1 (de) |
| CA (1) | CA1311292C (de) |
| DE (1) | DE3870163D1 (de) |
| DK (1) | DK169647B1 (de) |
| FR (1) | FR2622719A1 (de) |
| GR (1) | GR3005179T3 (de) |
| NO (1) | NO174487C (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2263771A (en) * | 1992-01-04 | 1993-08-04 | Sound International Ltd | Intruder alarms |
| DE69413332T2 (de) * | 1993-07-19 | 1999-02-11 | Ping West Hills Calif. Lee | Eine Kombination eines Kraftfahrzeugs mit einem Alarmsystem |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3569923A (en) * | 1967-10-30 | 1971-03-09 | Us Navy | Adaptive acoustic detector apparatus |
| FR2122343B1 (de) * | 1971-01-21 | 1975-02-21 | Ato Inc | |
| GB1605185A (en) * | 1976-11-09 | 1983-03-02 | Plessey Co Ltd | Sensing arrangements |
| US4442514A (en) * | 1981-11-17 | 1984-04-10 | The United States Of America As Represented By The Secretary Of The Air Force | Security system signal processor |
| US4479113A (en) * | 1982-01-20 | 1984-10-23 | The United States Of America As Represented By The United States Department Of Energy | Compensated intruder-detection systems |
| FR2523339A1 (fr) * | 1982-03-12 | 1983-09-16 | Guglielmetti Vg Electro | Dispositif de detection a capteur volumetrique a infra-sons et procede de detection par infra-sons |
| DE3300906A1 (de) * | 1983-01-13 | 1984-07-19 | Mauro 2054 Geesthacht Marmotti | Verfahren und vorrichtung zur raum- und gebaeudeueberwachung |
-
1987
- 1987-10-30 FR FR8715052A patent/FR2622719A1/fr not_active Withdrawn
-
1988
- 1988-10-17 DE DE8888440086T patent/DE3870163D1/de not_active Expired - Lifetime
- 1988-10-17 AT AT88440086T patent/ATE75063T1/de not_active IP Right Cessation
- 1988-10-17 EP EP88440086A patent/EP0317459B1/de not_active Expired - Lifetime
- 1988-10-27 CA CA000581520A patent/CA1311292C/fr not_active Expired - Lifetime
- 1988-10-28 NO NO884823A patent/NO174487C/no unknown
- 1988-10-28 DK DK601688A patent/DK169647B1/da not_active IP Right Cessation
-
1992
- 1992-07-15 GR GR920401525T patent/GR3005179T3/el unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NO174487C (no) | 1994-05-11 |
| DK601688A (da) | 1989-05-01 |
| FR2622719A1 (fr) | 1989-05-05 |
| EP0317459A2 (de) | 1989-05-24 |
| NO884823D0 (no) | 1988-10-28 |
| DK169647B1 (da) | 1995-01-02 |
| DE3870163D1 (de) | 1992-05-21 |
| EP0317459A3 (en) | 1989-08-09 |
| ATE75063T1 (de) | 1992-05-15 |
| GR3005179T3 (de) | 1993-05-24 |
| EP0317459B1 (de) | 1992-04-15 |
| DK601688D0 (da) | 1988-10-28 |
| NO884823L (no) | 1989-05-02 |
| NO174487B (no) | 1994-01-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |