ES8501909A1 - Detector diferencial de presion acustica - Google Patents

Detector diferencial de presion acustica

Info

Publication number
ES8501909A1
ES8501909A1 ES531947A ES531947A ES8501909A1 ES 8501909 A1 ES8501909 A1 ES 8501909A1 ES 531947 A ES531947 A ES 531947A ES 531947 A ES531947 A ES 531947A ES 8501909 A1 ES8501909 A1 ES 8501909A1
Authority
ES
Spain
Prior art keywords
pressure differential
amplifier
circuit
differential detector
reference signal
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
Application number
ES531947A
Other languages
English (en)
Spanish (es)
Other versions
ES531947A0 (es
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LAZARTIGUES CLAUDE
Original Assignee
LAZARTIGUES CLAUDE
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by LAZARTIGUES CLAUDE filed Critical LAZARTIGUES CLAUDE
Publication of ES531947A0 publication Critical patent/ES531947A0/es
Publication of ES8501909A1 publication Critical patent/ES8501909A1/es
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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)
  • Burglar Alarm Systems (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Measuring Fluid Pressure (AREA)
ES531947A 1983-04-28 1984-04-26 Detector diferencial de presion acustica Expired ES8501909A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8307283A FR2545247B1 (fr) 1983-04-28 1983-04-28 Detecteur differentiel de pression acoustique

Publications (2)

Publication Number Publication Date
ES531947A0 ES531947A0 (es) 1984-12-16
ES8501909A1 true ES8501909A1 (es) 1984-12-16

Family

ID=9288482

Family Applications (1)

Application Number Title Priority Date Filing Date
ES531947A Expired ES8501909A1 (es) 1983-04-28 1984-04-26 Detector diferencial de presion acustica

Country Status (3)

Country Link
EP (1) EP0127493A1 (fr)
ES (1) ES8501909A1 (fr)
FR (1) FR2545247B1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2588108A1 (fr) * 1985-09-27 1987-04-03 Durand Michel Detecteur actif d'effraction perimetrique
GB8925308D0 (en) * 1989-11-09 1989-12-28 Taylor Michael R Sound detection devices and systems
GB2241577A (en) * 1990-02-15 1991-09-04 Nnc Ltd Ultrasonic interference detector
FR2735600A1 (fr) * 1995-06-13 1996-12-20 Ponce Max Systeme de protection antivol et anti-intrusion par infrason

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1415498A (en) * 1972-01-20 1975-11-26 Securitas Alarm Ltd Alarm system
GB1573618A (en) * 1976-03-16 1980-08-28 Elliott Brothers London Ltd Intruder alarm systems
DE2852664C2 (de) * 1978-12-06 1982-08-19 Cerberus AG, 8708 Männedorf, Zürich Verfahren und Anordnung zur Einbruchmeldung
DE2900444A1 (de) * 1979-01-08 1980-07-10 Licentia Gmbh Verfahren und schaltungsanordnung zur auswertung von ausgangssignalen von schallaufnehmern einer objektschutzueberwachungsanlage und zur erzeugung eines alarmsignals

Also Published As

Publication number Publication date
FR2545247A1 (fr) 1984-11-02
EP0127493A1 (fr) 1984-12-05
FR2545247B1 (fr) 1986-06-06
ES531947A0 (es) 1984-12-16

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