GB1326493A - Transducer - Google Patents

Transducer

Info

Publication number
GB1326493A
GB1326493A GB2504371*A GB2504371A GB1326493A GB 1326493 A GB1326493 A GB 1326493A GB 2504371 A GB2504371 A GB 2504371A GB 1326493 A GB1326493 A GB 1326493A
Authority
GB
United Kingdom
Prior art keywords
pressure signal
whistle
khz
fluid
crystal
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
GB2504371*A
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.)
Automatic Switch Co
Original Assignee
Automatic Switch Co
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 Automatic Switch Co filed Critical Automatic Switch Co
Publication of GB1326493A publication Critical patent/GB1326493A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K5/00—Whistles
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • General Physics & Mathematics (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

1326493 Fluid-pressure signal sensor AUTOMATIC SWITCH CO 19 April 1971 [27 March 1970] 25043/71 Heading H4D A fluid pressure signal is sensed by directing it through a whistle to generate ultrasonic waves which are detected by a piezoelectric crystal. In the embodiment shown the whistle is a fluidic device 12 with resonator chambers 15, 16 and a lateral Venturi section 14, 45 through which the pressure signal is directed. Crystal 31, on a brass backing disc 30 in divergent chamber 22, is resonant at the generated ultrasonic frequency (e.g. >18 kHz, preferably about 50 kHz) and its output at terminals 34, 35 is amplified and rectified by circuit 11.
GB2504371*A 1970-03-27 1971-04-19 Transducer Expired GB1326493A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US2326270A 1970-03-27 1970-03-27

Publications (1)

Publication Number Publication Date
GB1326493A true GB1326493A (en) 1973-08-15

Family

ID=21814043

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2504371*A Expired GB1326493A (en) 1970-03-27 1971-04-19 Transducer

Country Status (2)

Country Link
US (1) US3600612A (en)
GB (1) GB1326493A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2493984A1 (en) * 1980-11-12 1982-05-14 Centre Electron Horloger PRESSURE TRANSDUCER WITH VIBRATING ELEMENT

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3835810A (en) * 1969-09-04 1974-09-17 Energy Sciences Inc Pressure wave mixing
US4114557A (en) * 1970-05-14 1978-09-19 Brey Robert J De Particle monitoring system
US3831550A (en) * 1970-11-02 1974-08-27 Energy Sciences Inc Sonic wave generation
DE2458901C3 (en) * 1974-04-23 1986-07-10 The Foxboro Co., Foxboro, Mass. Flow meter
US3948098A (en) * 1974-04-24 1976-04-06 The Foxboro Company Vortex flow meter transmitter including piezo-electric sensor
DD115206A5 (en) * 1974-07-13 1975-09-12 Monforts Fa A Fluidic OSC
US4467236A (en) * 1981-01-05 1984-08-21 Piezo Electric Products, Inc. Piezoelectric acousto-electric generator
EP0104004A1 (en) * 1982-09-06 1984-03-28 Graham Cameron Grant Fluid flowmeter and method of measuring flow rate
US4572003A (en) * 1983-11-03 1986-02-25 The United States Of America As Represented By The United States Department Of Energy Sidetone generator flowmeter
US4599551A (en) * 1984-11-16 1986-07-08 The United States Of America As Represented By The United States Department Of Energy Thermoacoustic magnetohydrodynamic electrical generator
US4595856A (en) * 1985-08-16 1986-06-17 United Technologies Corporation Piezoelectric fluidic power supply
US4971005A (en) * 1989-07-28 1990-11-20 United Technologies Corporation Fuel control utilizing a multifunction valve
US5415161A (en) * 1993-09-15 1995-05-16 Ryder; Steven L. Intermittant demand aerosol control device
US20060082158A1 (en) * 2004-10-15 2006-04-20 Schrader Jeffrey L Method and device for supplying power from acoustic energy
CA2744653A1 (en) * 2008-12-03 2010-06-10 Tae Chang N.E.T. Co., Ltd. Sound wave resonance generator
US9044625B2 (en) * 2012-10-29 2015-06-02 Honeywell International Inc. Piezo driver having low current quiesent operation for use in a personal alert safety system of a self-contained breathing apparatus

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2509913A (en) * 1944-12-14 1950-05-30 Bell Telephone Labor Inc Electric power source
US3021708A (en) * 1957-04-23 1962-02-20 Gerald S November Flowmeter
US3239678A (en) * 1961-03-01 1966-03-08 Sonus Corp Piezoelectric power system
US3144767A (en) * 1961-07-03 1964-08-18 Phillips Petroleum Co Method and apparatus for determining fluid flow rate
US3386287A (en) * 1964-02-20 1968-06-04 Hurvitz Hyman Flow detectors
US3383914A (en) * 1965-10-23 1968-05-21 Cornell Aeronautical Labor Inc Skin friction transducer
US3470395A (en) * 1966-12-30 1969-09-30 United Aircraft Corp Acoustic wave sensor
US3473377A (en) * 1967-02-27 1969-10-21 Phillips Petroleum Co Mass flowmeter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2493984A1 (en) * 1980-11-12 1982-05-14 Centre Electron Horloger PRESSURE TRANSDUCER WITH VIBRATING ELEMENT

Also Published As

Publication number Publication date
US3600612A (en) 1971-08-17

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees