GB2265720A - Device for determining the presence and /or characteristics of an object or a substance - Google Patents

Device for determining the presence and /or characteristics of an object or a substance

Info

Publication number
GB2265720A
GB2265720A GB9309862A GB9309862A GB2265720A GB 2265720 A GB2265720 A GB 2265720A GB 9309862 A GB9309862 A GB 9309862A GB 9309862 A GB9309862 A GB 9309862A GB 2265720 A GB2265720 A GB 2265720A
Authority
GB
United Kingdom
Prior art keywords
sensors
buffered
slave members
slave
driven
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
GB9309862A
Other versions
GB9309862D0 (en
GB2265720B (en
Inventor
William Bach Thomas
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.)
MOONSTONE DESIGNS Ltd
Original Assignee
MOONSTONE DESIGNS Ltd
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
Priority claimed from GB909024966A external-priority patent/GB9024966D0/en
Priority claimed from GB909024965A external-priority patent/GB9024965D0/en
Application filed by MOONSTONE DESIGNS Ltd filed Critical MOONSTONE DESIGNS Ltd
Priority to GB9417761A priority Critical patent/GB2279756B/en
Priority to GB9417762A priority patent/GB2279757B/en
Publication of GB9309862D0 publication Critical patent/GB9309862D0/en
Publication of GB2265720A publication Critical patent/GB2265720A/en
Application granted granted Critical
Publication of GB2265720B publication Critical patent/GB2265720B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
    • G01B7/023—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring distance between sensor and object
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/28—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring contours or curvatures
    • G01B7/287—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring contours or curvatures using a plurality of fixed, simultaneously operating transducers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/34—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring roughness or irregularity of surfaces

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

An imaging device whereby the internal characteristics and/or external dimensions and/or location of an object are determined by one or more sensors (p1-p4) and optionally one or more slave members which may be driven in or out of phase to the sensors and which transmit an effect to the sensors directly and via the object to be characterised. The sensors (p1-p4) vary the frequency or amplitude of an oscillator (15) which contains a buffer/follower amplifier (7) and a Schmitt trigger (6). The slave members are typically driven via an inverter (9). Unused sensor lines are buffered via buffered switches (Sw1-Sw4). Connecting lines to a plurality of sensors or slave members pass through multiplexers (e.g. MUX1) with buffered power rails (P, G) in order to eliminate the internal capacitance to the voltage supply and ground rails.
GB9309862A 1990-11-16 1991-11-15 Device for determining the presence and/or characteristics of an object or a substance Expired - Lifetime GB2265720B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB9417761A GB2279756B (en) 1990-11-16 1991-11-15 Device for determining the presence and/or characteristics of an object or a substance
GB9417762A GB2279757B (en) 1990-11-16 1991-11-15 Device for determining the presence and/or characteristics of an object or a substance

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB909024966A GB9024966D0 (en) 1990-11-16 1990-11-16 Imaging devices
GB909024965A GB9024965D0 (en) 1990-11-16 1990-11-16 Improvements in or relating to proximity sensitive devices
PCT/GB1991/002021 WO1992008947A1 (en) 1990-11-16 1991-11-15 Device for determining the presence and/or characteristics of an object or a substance

Publications (3)

Publication Number Publication Date
GB9309862D0 GB9309862D0 (en) 1993-07-14
GB2265720A true GB2265720A (en) 1993-10-06
GB2265720B GB2265720B (en) 1995-06-14

Family

ID=26297963

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9309862A Expired - Lifetime GB2265720B (en) 1990-11-16 1991-11-15 Device for determining the presence and/or characteristics of an object or a substance

Country Status (3)

Country Link
AU (1) AU8866991A (en)
GB (1) GB2265720B (en)
WO (1) WO1992008947A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2293242A (en) * 1994-09-15 1996-03-20 Sony Uk Ltd Capacitive touch detection

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE160864T1 (en) * 1992-02-10 1997-12-15 Syel Di Franchi A Martolini A ELECTRONIC CAPACITIVE SENSOR BAR DEVICE
DE4244332C1 (en) * 1992-12-28 1994-05-11 Microspace Mes Und Sensortechn Method and device for measuring geometries of technical surfaces
US5802479A (en) * 1994-09-23 1998-09-01 Advanced Safety Concepts, Inc. Motor vehicle occupant sensing systems
FR2738910B1 (en) * 1995-09-15 1997-11-14 Superba Sa MOTION SENSOR IN SPACE, PARTICULARLY FOR THE NON-CONTACT MEASUREMENT OF THE CHARACTERISTICS OF A LINEAR OR SURFACIC PRODUCT
US5844486A (en) * 1997-01-02 1998-12-01 Advanced Safety Concepts, Inc. Integral capacitive sensor array
DE19908974C2 (en) * 1998-03-03 2002-01-10 Gerhard Von Der Emde Distance measuring method and device
WO2010043936A1 (en) * 2008-10-17 2010-04-22 Faurecia Bloc Avant Sensor device for detecting an object in a detection area
DE102010028718A1 (en) * 2010-05-07 2011-11-10 Robert Bosch Gmbh Detection of a dielectric object

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0004757A1 (en) * 1978-03-31 1979-10-17 Gould Inc. Capacitive non-contact gauging system
WO1988001747A1 (en) * 1986-09-03 1988-03-10 Extrude Hone Corporation Capacitor array sensors tactile and proximity sensing and methods of use thereof
EP0425823A1 (en) * 1989-09-29 1991-05-08 Antivision Systems Corp. Electrocstatic imaging apparatus

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2744785B2 (en) * 1977-10-05 1981-05-21 Robert 7995 Neukirch Buck Electronic proximity switch
US4814691A (en) * 1985-08-09 1989-03-21 Washington Research Foundation Fringe field capacitive sensor for measuring profile of a surface
GB2250822B (en) * 1989-05-17 1993-08-11 Moonstone Designs Ltd Proximity sensor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0004757A1 (en) * 1978-03-31 1979-10-17 Gould Inc. Capacitive non-contact gauging system
WO1988001747A1 (en) * 1986-09-03 1988-03-10 Extrude Hone Corporation Capacitor array sensors tactile and proximity sensing and methods of use thereof
EP0425823A1 (en) * 1989-09-29 1991-05-08 Antivision Systems Corp. Electrocstatic imaging apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2293242A (en) * 1994-09-15 1996-03-20 Sony Uk Ltd Capacitive touch detection
GB2293242B (en) * 1994-09-15 1998-11-18 Sony Uk Ltd Capacitive touch detection
US5880718A (en) * 1994-09-15 1999-03-09 Sony Corporation Capacitive touch detection

Also Published As

Publication number Publication date
WO1992008947A1 (en) 1992-05-29
GB9309862D0 (en) 1993-07-14
GB2265720B (en) 1995-06-14
AU8866991A (en) 1992-06-11

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Expiry date: 20111114