AU7681591A - Arrangement for detecting variations in atmospheric pressure - Google Patents

Arrangement for detecting variations in atmospheric pressure

Info

Publication number
AU7681591A
AU7681591A AU76815/91A AU7681591A AU7681591A AU 7681591 A AU7681591 A AU 7681591A AU 76815/91 A AU76815/91 A AU 76815/91A AU 7681591 A AU7681591 A AU 7681591A AU 7681591 A AU7681591 A AU 7681591A
Authority
AU
Australia
Prior art keywords
arrangement
atmospheric pressure
detecting variations
variations
detecting
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.)
Abandoned
Application number
AU76815/91A
Inventor
Ohtai Kwon
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of AU7681591A publication Critical patent/AU7681591A/en
Abandoned legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/20—Actuation by change of fluid pressure
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/0001—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means
    • G01L9/0008—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means using vibrations
    • G01L9/0022—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means using vibrations of a piezoelectric element
    • 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)
  • Fluid Mechanics (AREA)
  • Burglar Alarm Systems (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
AU76815/91A 1990-03-23 1991-03-22 Arrangement for detecting variations in atmospheric pressure Abandoned AU7681591A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9003405U DE9003405U1 (en) 1990-03-23 1990-03-23
DE9003405 1990-03-23

Publications (1)

Publication Number Publication Date
AU7681591A true AU7681591A (en) 1991-10-21

Family

ID=6852272

Family Applications (1)

Application Number Title Priority Date Filing Date
AU76815/91A Abandoned AU7681591A (en) 1990-03-23 1991-03-22 Arrangement for detecting variations in atmospheric pressure

Country Status (4)

Country Link
KR (1) KR0155546B1 (en)
AU (1) AU7681591A (en)
DE (1) DE9003405U1 (en)
WO (1) WO1991015004A1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3419802C2 (en) * 1984-05-26 1986-05-15 Al Nour, Vaduz Burglar alarm device for locked rooms
EP0187180B1 (en) * 1985-01-10 1989-08-02 teletronic Hartmuth Jensen Sensor for monitoring systems
DE8915081U1 (en) * 1989-12-22 1990-02-08 Kwon, Ohtai, 2000 Hamburg, De

Also Published As

Publication number Publication date
WO1991015004A1 (en) 1991-10-03
KR910017177A (en) 1991-11-05
KR0155546B1 (en) 1998-12-15
DE9003405U1 (en) 1990-07-26

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