GB2236858A - Dual encoder for electronic tape measure - Google Patents

Dual encoder for electronic tape measure Download PDF

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Publication number
GB2236858A
GB2236858A GB8920295A GB8920295A GB2236858A GB 2236858 A GB2236858 A GB 2236858A GB 8920295 A GB8920295 A GB 8920295A GB 8920295 A GB8920295 A GB 8920295A GB 2236858 A GB2236858 A GB 2236858A
Authority
GB
United Kingdom
Prior art keywords
measuring
measuring device
data
previous
detector
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
GB8920295A
Other versions
GB8920295D0 (en
GB2236858B (en
Inventor
Ronald James Care
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
Priority to GB8920295A priority Critical patent/GB2236858B/en
Publication of GB8920295D0 publication Critical patent/GB8920295D0/en
Publication of GB2236858A publication Critical patent/GB2236858A/en
Application granted granted Critical
Publication of GB2236858B publication Critical patent/GB2236858B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • G01B7/026—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring length of cable, band or the like, which has been paid out, e.g. from a reel
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

An electronic tape measure is provided with a linear encoder 5 and a rotary encoder 2, 3 which measure displacement of the tape 1. Both encoders feed a correlator 4 which checks the signals for error and feeds a counter/calculator 6 and display 7. The tape may be ribbed to mesh with a ribbed pulley 2. <IMAGE>

Description

Duel Encoder for Electronic tape measure THIS INVENTION RELATES TO ELECTRONIC MEASURING DEVICES .
ELECTRONIC TAPE/LINE MEASURING GAUGES EXIST IN MANY FORMS, A LINE MEASURING GAUGE MAKES USE OF A ROTARY OR LINEAR MOVEMENT SENSOR TO DETECT THE MOVEMENT OF THE MEASURING ELEMENT.
IT IS PROPOSED BY THE PRESENT INVENTION TO MAKE USE OF BOTH LINEAR AND ROTARY SENSORS TO DETECT MOVEMENT OF THE MEASURING ELEMENT. AND THEREFOR CALCALATING THE AMOUNT OF ELLEMENT DRAWN OR RETURNED TO THE MEASURING ELEMENTS HOLDER.
THE SENSORS MAY BE OPTICAL OR PHYSICAL IN OPERATION THE MEASURING ELEMENT/LINE MAY HAVE A SMOOTH OR RIBBED SURFACE, IN THE CASE OF THE RIBBED ELEMENT, THE RISS MESH WITH A RIBBED ROTARY PULLEY, ENSURING NO SLIPPAGE TAKES PLACE DURING OPERATION OF THE ROTARY ENCODER AN EXAMPLE OF OPERATION NOW FOLLOWS WITH REFERENCE TO FIG. 1 THE RIBBED ELEMENT (1) IS DRAWN OVER RIBBED PULLEY (2) ROTARY MOTION SENSOR (3) DETECTS MOVEMENT OF PULLEV AND SENDS CORRESPONDING DATA TO CORRELATOR (4) , WHILST THE ELEMENT IS PASSING OVER THE ROTARY ENCODER. PART OF THE ELEMENT IS PASSING THROUGH/OVER A LINEAR MOTION SENSOR (5) . THE DATA FROM THIS SENSO@ IS SENT TO CORRELATOR (4) BOTH DATA SIGNALS ARE CHECKED FOR ERROR, AND ADJUSTED ACCORDINGLY.
THE MODIFIED SIGNAL IS THEN SENT TO A CALCALATOR/ COUNTER CIRCUIT (6) hND THE RESULT IS DISPLAYED ON DISPLAY (7).

Claims (1)

  1. CLAIM 1
    A LINEAR MEASURING DEVICE COMPRISING A A MOVABLE MEASURING ELEMENT, A SENSOR FOR DETECTING MOVEMENTS OF THE MEASURING ELEMENT AN ELECTRICAL PULSE/DATA GENERATOR COUPLED TO THE SENSOR, AN ELECTRONIC COUNTER/CALCALATOR CIRCUIT CONNECTED TO A DISPLAY.
    CLAIM 2 A MEASURING DEVICE ACCORDING TO CLAIM 1 IN WHICH THE ELEMENT IS FLEXABLE AND THE SENSOR INCLUDES A FORTARY ELEMENT EMGAGING WITH THE MEASURING ELEMENT SO AS TO BE TURNED BY LINEAR MOVEMENT THEREOF AND PRODUCES DATA ACCORDINGLY.
    CLAIM 3 A MEASURING DEVICE ACCORDING TO CLAIM 2 IN WHICH THE ELEMENTS ARE PROVIDED WITH PHYSICAL, MASNETIC OR OPTICAL MEASURING POINTS AND THE SENSOR INCLUDE CORRESPONDINS DETECTORS CAPABLE OF SENSING SUCH MEASURING FOINTS.
    CLAIM 4 A MEASURING DEVICE ACCORDING TO CLAIM 1 WHERE THE LINEAR DETECTOR HAS CORRESPONDING DTECTOR MEANS TO SENSE THE MEASURING POINTS MENTIONED IN CLAIM 3.
    CLAIM 5 LA MEASURING DEVICE ACCORDING TO CLAIMS 1 AND 2 WHERE THE MEASURING ELEMENT HAS RIBS, INDENTATIONS OR TEETH ALONG ITS ENTIRE LENGTH CLAIM 6 A MEASURING DEVICE ACCORDING TO CLAIM 5 2, 3 AND 4 WHERE THE DETECTOR/SENSORS ARE CAPABLE OF LOCATING WITH OR MESHING WITH THE MEASURING ELEMENT THERFOR PRODUCING CORRESPONDING DATA TO THE MEASURING POINTS.
    CLAIM 7 A MEASURING DEVICE ACCORDING TO ANY OF THE PREVIOUS CLAIMS WHERE THE ROTARY AND LINEAR DETECTOR/SENSORS ARE USED SIMULTANEOUSLY PRODUCING SERIAL OR PARALLEL DATA ACCORDINBLY.
    CLAIM 8 A MEASURING DEVICE ACCORDING TO CLAIM 7 WHERE THERE IS PROVIDED A CORRELATOR/DATA PROCCESSOR CAPABLE OF DECODING THE SERIAL PARALLEL DATA PROVIDED BY THE DETECTOR/SENSORS CLAIM 9 A MEASURING DEVICE ACCORDING TO AN@ OF THE PREVIOUS CLAIMS WHERE THE DATA PRODUCED MAY REPRESENT INCREMENT OR DECREMENT INFORMATION ACCORDING TO THE MEASURING ELEMENTS MOVEMENT.
    CLAIM 10 A MEASURING DEVICE ACCORDING TO AN, OF THE PREVIOUS CLAIMS WHERE THE MEASURING ELEMENT MAY BE A THIN LINE OF CIRCULAR CROSS SECTION.
    CLAIM 11 A MEASURING DEVICE ACCORDING TO ANY OF THE PREVIOUS CLAINS WHERE THE MEASURING ELEMENT MAY A TAPE AS FOUND IN MORE CONVENTIONAL DEVICES.
    CLAIM 12 A MEASURING DEVICE ACCORDING TO ANY OF THE PREVIOUS CLAIMS WHERE THERE IS PROVIDED A CALCALATOR WITH ALL THE USUAL CALCALATOR FUNCTIONS CAPABLE OF DECODING SERIAL OR PARALLEL DATA DIRECTLY FROM THE DETECTOR/ SENSORS.
    CLAIM 13 A MEASURING DEVICE ACCORDING TO ANY OF THE PREVIOUS CLAIMS WHERE THE CALCATOR W WITH ALL THE USUAL CALCALATOR FUNCTONS IS CAPABLE OF DECODING DATA PROVIDED BY A CORRELATOR/DATA PROCCESSOR AS MENTIONED IN CLAIM B CLAIM 14 A MEASURING DEVICE ACCORDING TO ANY OF THE PREVIOUS CLAIMS WHERE THERE IS PROVIDED A DISPLAY CAPABLE OF REPRESENTING THE MEASUREMENT DATA AND FUNCTIONAL DATA PROVIDED BY DETECTOR/SENSOR, CORRELATOR, CALCALATOR.
GB8920295A 1989-09-08 1989-09-08 Dual encoder for electronic tape measure Expired - Fee Related GB2236858B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8920295A GB2236858B (en) 1989-09-08 1989-09-08 Dual encoder for electronic tape measure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8920295A GB2236858B (en) 1989-09-08 1989-09-08 Dual encoder for electronic tape measure

Publications (3)

Publication Number Publication Date
GB8920295D0 GB8920295D0 (en) 1989-10-25
GB2236858A true GB2236858A (en) 1991-04-17
GB2236858B GB2236858B (en) 1994-08-24

Family

ID=10662724

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8920295A Expired - Fee Related GB2236858B (en) 1989-09-08 1989-09-08 Dual encoder for electronic tape measure

Country Status (1)

Country Link
GB (1) GB2236858B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2753789A1 (en) * 1996-09-20 1998-03-27 Marie Bruno Marie Dominique Device for measurement of moving body displacement or velocity
US5825307A (en) * 1997-02-05 1998-10-20 Perception Incorporated Absolute linear encoder and method of production utilizing index and counter channels
US10859363B2 (en) 2017-09-27 2020-12-08 Stanley Black & Decker, Inc. Tape rule assembly with linear optical encoder for sensing human-readable graduations of length

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102006757B1 (en) 2017-12-29 2019-08-02 (주)인천측기 Apparatus and system for length measurements

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2009397A (en) * 1977-11-25 1979-06-13 Stanley Works Measurning device
GB2017929A (en) * 1978-03-13 1979-10-10 Mansel James W Digital tape measure
GB2102121A (en) * 1981-06-20 1983-01-26 Sonic Tape Plc Improvements relating to distance measuring devices
GB2183839A (en) * 1983-04-08 1987-06-10 William Kenneth Caldwell Digital measuring device
WO1988000776A1 (en) * 1986-07-19 1988-01-28 Ronald James Care Linear measuring devices

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2012121A (en) * 1977-08-25 1979-07-18 Post Office Electrical connectors
US5027526A (en) * 1989-06-02 1991-07-02 Crane R Stephen Digital linear measuring device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2009397A (en) * 1977-11-25 1979-06-13 Stanley Works Measurning device
GB2017929A (en) * 1978-03-13 1979-10-10 Mansel James W Digital tape measure
GB2102121A (en) * 1981-06-20 1983-01-26 Sonic Tape Plc Improvements relating to distance measuring devices
GB2183839A (en) * 1983-04-08 1987-06-10 William Kenneth Caldwell Digital measuring device
WO1988000776A1 (en) * 1986-07-19 1988-01-28 Ronald James Care Linear measuring devices

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2753789A1 (en) * 1996-09-20 1998-03-27 Marie Bruno Marie Dominique Device for measurement of moving body displacement or velocity
US5825307A (en) * 1997-02-05 1998-10-20 Perception Incorporated Absolute linear encoder and method of production utilizing index and counter channels
US10859363B2 (en) 2017-09-27 2020-12-08 Stanley Black & Decker, Inc. Tape rule assembly with linear optical encoder for sensing human-readable graduations of length

Also Published As

Publication number Publication date
GB8920295D0 (en) 1989-10-25
GB2236858B (en) 1994-08-24

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19960908