FR2286554A2 - Module discriminateur d'impulsions eliminant les fausses alarmes engendrees par un detecteur a ultra-sons - Google Patents
Module discriminateur d'impulsions eliminant les fausses alarmes engendrees par un detecteur a ultra-sonsInfo
- Publication number
- FR2286554A2 FR2286554A2 FR7432283A FR7432283A FR2286554A2 FR 2286554 A2 FR2286554 A2 FR 2286554A2 FR 7432283 A FR7432283 A FR 7432283A FR 7432283 A FR7432283 A FR 7432283A FR 2286554 A2 FR2286554 A2 FR 2286554A2
- Authority
- FR
- France
- Prior art keywords
- resistor
- transistor
- relay
- connected via
- false alarm
- 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
-
- 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
- G08B13/1609—Actuation by interference with mechanical vibrations in air or other fluid using active vibration detection systems
- G08B13/1618—Actuation by interference with mechanical vibrations in air or other fluid using active vibration detection systems using ultrasonic detection means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7432283A FR2286554A2 (fr) | 1974-09-25 | 1974-09-25 | Module discriminateur d'impulsions eliminant les fausses alarmes engendrees par un detecteur a ultra-sons |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7432283A FR2286554A2 (fr) | 1974-09-25 | 1974-09-25 | Module discriminateur d'impulsions eliminant les fausses alarmes engendrees par un detecteur a ultra-sons |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2286554A2 true FR2286554A2 (fr) | 1976-04-23 |
FR2286554B2 FR2286554B2 (fr) | 1977-07-01 |
Family
ID=9143406
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7432283A Granted FR2286554A2 (fr) | 1974-09-25 | 1974-09-25 | Module discriminateur d'impulsions eliminant les fausses alarmes engendrees par un detecteur a ultra-sons |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2286554A2 (fr) |
-
1974
- 1974-09-25 FR FR7432283A patent/FR2286554A2/fr active Granted
Also Published As
Publication number | Publication date |
---|---|
FR2286554B2 (fr) | 1977-07-01 |
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