GB1137889A - Improvements relating to electro-mechanical transducers - Google Patents

Improvements relating to electro-mechanical transducers

Info

Publication number
GB1137889A
GB1137889A GB54672/65A GB5467265A GB1137889A GB 1137889 A GB1137889 A GB 1137889A GB 54672/65 A GB54672/65 A GB 54672/65A GB 5467265 A GB5467265 A GB 5467265A GB 1137889 A GB1137889 A GB 1137889A
Authority
GB
United Kingdom
Prior art keywords
range
cross
strain gauge
stress
section
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
GB54672/65A
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.)
Meggitt Orange County Inc
Original Assignee
Endevco Corp
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 Endevco Corp filed Critical Endevco Corp
Publication of GB1137889A publication Critical patent/GB1137889A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R21/00—Variable-resistance transducers
    • H04R21/04—Gramophone pick-ups using a stylus; Recorders using a stylus
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G21/00—Details of weighing apparatus
    • G01G21/02—Arrangements of bearings
    • G01G21/12—Devices for preventing derangement
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/18—Measuring force or stress, in general using properties of piezo-resistive materials, i.e. materials of which the ohmic resistance varies according to changes in magnitude or direction of force applied to the material
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
    • G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
    • G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
    • G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
    • G01P15/12—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values by alteration of electrical resistance
    • G01P15/123—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values by alteration of electrical resistance by piezo-resistive elements, e.g. semiconductor strain gauges
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C10/00—Adjustable resistors
    • H01C10/10—Adjustable resistors adjustable by mechanical pressure or force
    • H01C10/12—Adjustable resistors adjustable by mechanical pressure or force by changing surface pressure between resistive masses or resistive and conductive masses, e.g. pile type

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Pressure Sensors (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Gyroscopes (AREA)

Abstract

1,137,889. Stereophonic pick-ups. ENDEVCO CORP. 23 Dec., 1965 [29 Dec., 1964], No. 54672/65. Addition to 1,111,133. Heading H4J. [Also in Division H1] An electro - mechanical transducer incorporates a piezo-resistive strain gauge element of the same general form as in the Parent Specification viz., a body 150 of semi-conductor material shaped to form two pads 158 joined by a thinner neck 159-but the neck portion of the element has, at its thinnest part 160, a dimension within the fibre range. The fibre range is defined with reference to Fig. 7, which depicts the dependence of yield stress on cross-section, the stress having different but substantially constant values for small and larger crosssections but a value which is an inverse function of cross-section in a transitionary range of cross-sections. This range is termed the fibre range and within it yield strength is largely independent of cross-section. The figure shows numerical values for the preferred material, silicon. The transducer in which this element is embodied in a phonograph pick-up head, Fig. 2, in which movements of the stylus 30 are transmitted by arm 36 to stress the sensitive elements in a cartridge 100 from which an electrical output is derived. The cartridge 100 contains two of the elements 150 of Fig. 4, disposed with their planes at 90 degrees to each other and 45 degrees to the vertical, each responding to undulations in a corresponding side of the record groove in a stereophonic recording. The strain gauge elements may each be mounted on a centrally weakened beam 126, Fig. 5 (not shown) which is stressed by bending, the sensitive portion of the strain gauge overlying the weakened portion of the beam. Local circuits.-Fig. 6 (not shown) depicts a circuit in which the sensitive element is a component in a voltage divider chain across a voltage supply and a transistor amplifies the voltage appearing across the element.
GB54672/65A 1964-05-04 1965-12-23 Improvements relating to electro-mechanical transducers Expired GB1137889A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US36467364A 1964-05-04 1964-05-04
US42186964A 1964-12-29 1964-12-29

Publications (1)

Publication Number Publication Date
GB1137889A true GB1137889A (en) 1968-12-27

Family

ID=27002594

Family Applications (3)

Application Number Title Priority Date Filing Date
GB18324/65A Expired GB1111133A (en) 1964-05-04 1965-04-30 Improvements relating to electromechanical transducers
GB54418/65A Expired GB1111134A (en) 1964-05-04 1965-04-30 Improvements relating to electromechanical transducers
GB54672/65A Expired GB1137889A (en) 1964-05-04 1965-12-23 Improvements relating to electro-mechanical transducers

Family Applications Before (2)

Application Number Title Priority Date Filing Date
GB18324/65A Expired GB1111133A (en) 1964-05-04 1965-04-30 Improvements relating to electromechanical transducers
GB54418/65A Expired GB1111134A (en) 1964-05-04 1965-04-30 Improvements relating to electromechanical transducers

Country Status (3)

Country Link
US (1) US3501732A (en)
DE (2) DE1698644A1 (en)
GB (3) GB1111133A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2128404A (en) * 1982-10-04 1984-04-26 Becton Dickinson Co Piezoresistive transducer

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3673354A (en) * 1969-05-08 1972-06-27 Matsushita Electric Ind Co Ltd Semiconductor stress transducer
USRE29009E (en) 1972-07-28 1976-10-26 Bell & Howell Company High sensitivity semiconductor strain gauge
US3849874A (en) * 1972-07-28 1974-11-26 Bell & Howell Co Method for making a semiconductor strain transducer
US4080636A (en) * 1976-03-19 1978-03-21 Ampex Corporation System for damping vibrations in a deflectable transducer
US4809552A (en) * 1987-11-23 1989-03-07 Allied-Signal, Inc. Multidirectional force-sensing transducer
GB2343953A (en) * 1998-11-18 2000-05-24 Autoliv Dev A sensor arrangement with a deformable region
US6969809B2 (en) 2003-09-22 2005-11-29 Cts Corporation Vehicle seat weight sensor
US6988412B1 (en) * 2004-11-30 2006-01-24 Endevco Corporation Piezoresistive strain concentrator
DE202006004145U1 (en) * 2006-03-11 2007-08-02 Dr. Hahn Gmbh & Co. Kg Band for hingedly connecting a movable wing to a fixed frame
FR2942538B1 (en) * 2009-02-26 2012-06-08 Airbus France MEASURING DEVICE OF HINGE MOMENT
CN107796955B (en) * 2017-09-30 2019-10-11 西安交通大学 Double-shaft acceleration sensor chip and preparation method thereof in more beam type single mass face
CN107817364B (en) * 2017-09-30 2019-10-11 西安交通大学 A kind of two axis accelerometer chip of MEMS straight pull and vertical compression formula and preparation method thereof

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2909744A (en) * 1956-10-22 1959-10-20 Stxtham Instr Inc Electrical accelerometer
NL101891C (en) * 1957-02-23
US3089108A (en) * 1962-09-05 1963-05-07 Electro Optical Systems Inc Semiconductor strain gauge

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2128404A (en) * 1982-10-04 1984-04-26 Becton Dickinson Co Piezoresistive transducer

Also Published As

Publication number Publication date
US3501732A (en) 1970-03-17
DE1447995B2 (en) 1970-12-10
DE1698644A1 (en) 1971-02-25
DE1447995C3 (en) 1975-02-20
DE1447995A1 (en) 1968-11-21
GB1111134A (en) 1968-04-24
GB1111133A (en) 1968-04-24

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