FR2435170A1 - Interphone selectif automatique pour surveillance acoustique - Google Patents
Interphone selectif automatique pour surveillance acoustiqueInfo
- Publication number
- FR2435170A1 FR2435170A1 FR7824991A FR7824991A FR2435170A1 FR 2435170 A1 FR2435170 A1 FR 2435170A1 FR 7824991 A FR7824991 A FR 7824991A FR 7824991 A FR7824991 A FR 7824991A FR 2435170 A1 FR2435170 A1 FR 2435170A1
- Authority
- FR
- France
- Prior art keywords
- stables
- mains wiring
- oscillator
- noise frequency
- night
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
-
- 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
- G08B13/1672—Actuation by interference with mechanical vibrations in air or other fluid using passive vibration detection systems using sonic detecting means, e.g. a microphone operating in the audio frequency range
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2203/00—Indexing scheme relating to line transmission systems
- H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
- H04B2203/5404—Methods of transmitting or receiving signals via power distribution lines
- H04B2203/5416—Methods of transmitting or receiving signals via power distribution lines by adding signals to the wave form of the power source
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2203/00—Indexing scheme relating to line transmission systems
- H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
- H04B2203/5404—Methods of transmitting or receiving signals via power distribution lines
- H04B2203/5425—Methods of transmitting or receiving signals via power distribution lines improving S/N by matching impedance, noise reduction, gain control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2203/00—Indexing scheme relating to line transmission systems
- H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
- H04B2203/5429—Applications for powerline communications
- H04B2203/545—Audio/video application, e.g. interphone
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2203/00—Indexing scheme relating to line transmission systems
- H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
- H04B2203/5429—Applications for powerline communications
- H04B2203/5458—Monitor sensor; Alarm systems
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
- Burglar Alarm Systems (AREA)
- Emergency Alarm Devices (AREA)
Abstract
Interphone à courant porteur comprenant un émetteur et un récepteur reliés l'un à l'autre par l'intermédiaire d'une ligne du secteur. L'émetteur comprend des circuits pour surveiller le seuil et la fréquence d'apparition des bruits captés par un microphone, ainsi qu'un oscillateur commandé, destiné à produire le courant porteur pendant un certain temps, en cas d'anomalie de ces bruits. L'interphone de l'invention est particulièrement applicable à la surveillance des élevages animaliers.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7824991A FR2435170A1 (fr) | 1978-08-30 | 1978-08-30 | Interphone selectif automatique pour surveillance acoustique |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7824991A FR2435170A1 (fr) | 1978-08-30 | 1978-08-30 | Interphone selectif automatique pour surveillance acoustique |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2435170A1 true FR2435170A1 (fr) | 1980-03-28 |
FR2435170B1 FR2435170B1 (fr) | 1981-03-06 |
Family
ID=9212190
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7824991A Granted FR2435170A1 (fr) | 1978-08-30 | 1978-08-30 | Interphone selectif automatique pour surveillance acoustique |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2435170A1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2665007A1 (fr) * | 1990-07-23 | 1992-01-24 | Reparations Elect Centre Atel | Dispositif d'alarme a amplification de bruit. |
WO1999028883A1 (fr) * | 1997-11-27 | 1999-06-10 | Joy Ann Watson | Systeme de surveillance |
GB2336014A (en) * | 1997-11-27 | 1999-10-06 | Joy Ann Watson | Monitoring system |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3659280A (en) * | 1967-11-20 | 1972-04-25 | Dantronics Inc | Communication system using the electrical power distribution network of a building |
US3745552A (en) * | 1971-09-13 | 1973-07-10 | Teledyne Ind | Intrusion signature detector requiring both frequency and amplitude shifts |
-
1978
- 1978-08-30 FR FR7824991A patent/FR2435170A1/fr active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3659280A (en) * | 1967-11-20 | 1972-04-25 | Dantronics Inc | Communication system using the electrical power distribution network of a building |
US3745552A (en) * | 1971-09-13 | 1973-07-10 | Teledyne Ind | Intrusion signature detector requiring both frequency and amplitude shifts |
Non-Patent Citations (2)
Title |
---|
NV2198/68 * |
NV8023/23 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2665007A1 (fr) * | 1990-07-23 | 1992-01-24 | Reparations Elect Centre Atel | Dispositif d'alarme a amplification de bruit. |
WO1999028883A1 (fr) * | 1997-11-27 | 1999-06-10 | Joy Ann Watson | Systeme de surveillance |
GB2336014A (en) * | 1997-11-27 | 1999-10-06 | Joy Ann Watson | Monitoring system |
Also Published As
Publication number | Publication date |
---|---|
FR2435170B1 (fr) | 1981-03-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |