EP0159218A1 - Differentialdruck-Zugangsdetektor - Google Patents

Differentialdruck-Zugangsdetektor Download PDF

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Publication number
EP0159218A1
EP0159218A1 EP85400411A EP85400411A EP0159218A1 EP 0159218 A1 EP0159218 A1 EP 0159218A1 EP 85400411 A EP85400411 A EP 85400411A EP 85400411 A EP85400411 A EP 85400411A EP 0159218 A1 EP0159218 A1 EP 0159218A1
Authority
EP
European Patent Office
Prior art keywords
differential pressure
detector
pressure access
access detector
frequencies
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
Application number
EP85400411A
Other languages
English (en)
French (fr)
Other versions
EP0159218B1 (de
Inventor
Jean Isidore Marie C/O Sogesec S.A.R.L. Guillo
Jacques Gaston René c/o SOGESEC S.A.R.L. Bley
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.)
SOGESEC
Original Assignee
SOGESEC Sarl A RESPONSABILITE Ltee Ste
SOGESEC
SOGESEC Sarl A RESP Ste
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 SOGESEC Sarl A RESPONSABILITE Ltee Ste, SOGESEC, SOGESEC Sarl A RESP Ste filed Critical SOGESEC Sarl A RESPONSABILITE Ltee Ste
Priority to AT85400411T priority Critical patent/ATE39774T1/de
Publication of EP0159218A1 publication Critical patent/EP0159218A1/de
Application granted granted Critical
Publication of EP0159218B1 publication Critical patent/EP0159218B1/de
Expired legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C23/00—Non-electrical signal transmission systems, e.g. optical systems
    • G08C23/02—Non-electrical signal transmission systems, e.g. optical systems using infrasonic, sonic or ultrasonic waves
    • 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

Definitions

  • the invention relates to a differential pressure access detector intended for signaling and passage control.
  • the opening of a door causes movement of the ambient air which can be highlighted by the reaction of another door which would have been previously opened.
  • the corresponding waveform can be compared to the oscillation of a highly damped circuit.
  • This displacement can be detected by a device reacting to pressure variations and transforming them into an electrical signal usable in the useful frequency band such as a piezoelectric, dynamic, condenser, electromagnetic, or other microphone, or a sensor.
  • a device reacting to pressure variations and transforming them into an electrical signal usable in the useful frequency band
  • a device reacting to pressure variations and transforming them into an electrical signal usable in the useful frequency band
  • a device reacting to pressure variations and transforming them into an electrical signal usable in the useful frequency band
  • a device reacting to pressure variations and transforming them into an electrical signal usable in the useful frequency band
  • a device reacting to pressure variations and transforming them into an electrical signal usable in the useful frequency band
  • a device reacting to pressure variations and transforming them into an electrical signal usable in the useful frequency band
  • pressure gauge strain with pressure capsule; with microphone, condenser, etc ...
  • This device is mainly characterized in that it uses as a sensor, an electret microphone, in that it includes an amplifier-filter with fast cut-off frequencies eliminating parasitic signals, in that the signal processing is carried out by logical means.
  • the amplifier filter is capacity switching and its switching frequency can be controlled externally.
  • the logic means used is wired logic or a microprocessor combined with an analog-to-digital converter.
  • the device consists of a sensor 1, of an adaptation 2, of a means 3 for processing the signal supplied by the adaptation and of a signaling 4.
  • the signal processing means 3 provided by the adapter 2 consists of a alternation + detector 5 and - controlling an energy integrator 6, which is connected to an adjustable sensitivity comparator 7 connected to a means of decision-making 8.
  • the + and - detector is connected to the decision-making means 8, respectively via a counting device 9, a time integration means 10 and a comparator 11 , and a time delay 12.
  • the signaling means 4 comprises a relay control 13 and a usage control device 14.
  • the sensor 1, providing an exploitable electrical signal in the useful frequency band is, according to a preferred embodiment, consisting of an electret microphone whose passband is exploitable.
  • Adapter 2 is an amplifier with fast cut-off frequencies, eliminating parasitic signals, which, according to a preferred embodiment, is an externally controllable capacitance switching amplifier filter.
  • Information processing is carried out by means of a wired logic allowing the counting of events, the integration of the energy captured, the integration of duration and timing.
  • Comparator 2 connected to the duration integrator 10, has a fixed or adjustable threshold.
  • the processing is carried out by means of a microprocessor with digital analog converter and of calculation program allowing the reconstruction of the useful signal and the elimination of the parasitic components, as well as the 'identification of preprogram models, learning of models to be recognized and taking into account ambient parameters for a correction of the calculations.
  • Signaling takes place via relays, a photo-coupling link, or any other means.
  • the signal supplied by the sensor 1 is directed simultaneously to the alternation detector 5 and to the integrator d energy in absolute value 6.
  • the output of the alternation detector 5 controls the energy integrator 6, with a view to quantifying the signal and comparing it to a predetermined value adjustable by means of a sensitivity adjustment.
  • the alternation detector 5 controls the time delay 12 and the event counter 9, the outputs of which validate normal operation.
  • the time delay 12 determines the moment of decision-making.
  • the control of the signaling relay by the decision-making circuit 8 is therefore a function of the event count values, the duration of events, energy received and analysis time.
  • This detector is mainly intended to be used in the security field, but it can be adapted for other uses concerning in particular the security of people and goods and access and passage control in combination with a signal transmitter portable sound systems.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Fluid Pressure (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Measuring Volume Flow (AREA)
  • Burglar Alarm Systems (AREA)
EP85400411A 1984-03-05 1985-03-04 Differentialdruck-Zugangsdetektor Expired EP0159218B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85400411T ATE39774T1 (de) 1984-03-05 1985-03-04 Differentialdruck-zugangsdetektor.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8403501A FR2560701B1 (fr) 1984-03-05 1984-03-05 Detecteur d'acces a pression differentielle
FR8403501 1984-03-05

Publications (2)

Publication Number Publication Date
EP0159218A1 true EP0159218A1 (de) 1985-10-23
EP0159218B1 EP0159218B1 (de) 1989-01-04

Family

ID=9301779

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85400411A Expired EP0159218B1 (de) 1984-03-05 1985-03-04 Differentialdruck-Zugangsdetektor

Country Status (4)

Country Link
EP (1) EP0159218B1 (de)
AT (1) ATE39774T1 (de)
DE (1) DE3567298D1 (de)
FR (1) FR2560701B1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2589609A1 (fr) * 1985-10-31 1987-05-07 Frere Emmanuel Dispositif d'arlarme, notamment pour la surveillance de locaux
EP0357539A3 (de) * 1988-08-03 1990-03-14 Rabbit Systems, Inc. Infraschalldetektor und Alarmgeber mit sich angepasster Referenz
GB2231660A (en) * 1989-03-02 1990-11-21 David Mainprize Detecting entry into an enclosed space from air pressure changes
GB2234068A (en) * 1989-03-13 1991-01-23 * Mistry Chand Infra-sonic detectors for use in alarm systems
FR2694650A1 (fr) * 1992-08-04 1994-02-11 Frizet Christian Analyseur paramétrique en temps réel de choc et d'ouverture.
WO2001088870A1 (fr) * 2000-05-18 2001-11-22 F And F International S.A.R.L. Dispositif d'alarme autoregule a tres faible consommation d'energie
US6720875B2 (en) 2000-05-18 2004-04-13 F And F International S.A.R.L. Self-adjusting alarm device with low energy consumption

Families Citing this family (5)

* 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
ATE56099T1 (de) * 1985-10-14 1990-09-15 Microprotector Ltd Detektor- und alarmanlage.
FR2596179A1 (fr) * 1986-03-18 1987-09-25 Smcm Systeme de detection d'intrusion, applicable notamment a un systeme d'alarme
ES2224111T3 (es) * 1995-02-13 2005-03-01 Siemens Building Technologies Ag Detector de sonido corporal para la supervision de intrusiones.
FR2770670A1 (fr) * 1997-11-03 1999-05-07 Omega Conception Et Systeme Procede et dispositif d'alarme utilisant une detection sonore basse frequence

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2191180A1 (de) * 1972-06-28 1974-02-01 Philips Nv
US4383250A (en) * 1981-03-09 1983-05-10 American District Telegraph Company System for intrusion detection
US4415979A (en) * 1981-03-25 1983-11-15 Ensco, Inc. Method and apparatus for detecting the presence of an animate body in an inanimate mobile structure

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1218717A (en) * 1969-05-15 1971-01-13 Sonus Corp Sonic switch

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2191180A1 (de) * 1972-06-28 1974-02-01 Philips Nv
US4383250A (en) * 1981-03-09 1983-05-10 American District Telegraph Company System for intrusion detection
US4415979A (en) * 1981-03-25 1983-11-15 Ensco, Inc. Method and apparatus for detecting the presence of an animate body in an inanimate mobile structure

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2589609A1 (fr) * 1985-10-31 1987-05-07 Frere Emmanuel Dispositif d'arlarme, notamment pour la surveillance de locaux
EP0357539A3 (de) * 1988-08-03 1990-03-14 Rabbit Systems, Inc. Infraschalldetektor und Alarmgeber mit sich angepasster Referenz
US4991145A (en) * 1988-08-03 1991-02-05 Rabbit Systems, Inc. Infra-sonic detector and alarm with self adjusting reference
GB2231660A (en) * 1989-03-02 1990-11-21 David Mainprize Detecting entry into an enclosed space from air pressure changes
GB2234068A (en) * 1989-03-13 1991-01-23 * Mistry Chand Infra-sonic detectors for use in alarm systems
FR2694650A1 (fr) * 1992-08-04 1994-02-11 Frizet Christian Analyseur paramétrique en temps réel de choc et d'ouverture.
WO2001088870A1 (fr) * 2000-05-18 2001-11-22 F And F International S.A.R.L. Dispositif d'alarme autoregule a tres faible consommation d'energie
FR2809215A1 (fr) * 2000-05-18 2001-11-23 F And F Internat Dispositif d'alarme autoregule a tres faible consommation d'energie
US6720875B2 (en) 2000-05-18 2004-04-13 F And F International S.A.R.L. Self-adjusting alarm device with low energy consumption

Also Published As

Publication number Publication date
ATE39774T1 (de) 1989-01-15
EP0159218B1 (de) 1989-01-04
FR2560701A1 (fr) 1985-09-06
DE3567298D1 (en) 1989-02-09
FR2560701B1 (fr) 1987-04-17

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