GB1092525A - Improvements in and relating to relative motion measuring devices - Google Patents

Improvements in and relating to relative motion measuring devices

Info

Publication number
GB1092525A
GB1092525A GB4793464A GB4793464A GB1092525A GB 1092525 A GB1092525 A GB 1092525A GB 4793464 A GB4793464 A GB 4793464A GB 4793464 A GB4793464 A GB 4793464A GB 1092525 A GB1092525 A GB 1092525A
Authority
GB
United Kingdom
Prior art keywords
signals
pattern
indication
polarity
discriminators
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
GB4793464A
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.)
Rheinmetall Air Defence AG
Original Assignee
Oerlikon Contraves AG
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 CH1489563A external-priority patent/CH407569A/en
Application filed by Oerlikon Contraves AG filed Critical Oerlikon Contraves AG
Publication of GB1092525A publication Critical patent/GB1092525A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
    • G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
    • G01D5/36—Forming the light into pulses
    • G01D5/38—Forming the light into pulses by diffraction gratings
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/244—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
    • G01D5/24404—Interpolation using high frequency signals

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Transform (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

1,092,525. A/D converters. CONTRAVES A.G. Nov. 25, 1964 [Dec. 4, 1963; Sept. 22, 1964, No. 47934/64. Heading G4H. [Also in Division G1] In apparatus for measuring relative position of two objects of the type in which a plurality of phasedisplaced cyclic signals are produced, the signals are applied to polarity discriminators and the condition combination of the polarity discriminators is used to interpolate the relative position between cycles. The outputs of photo-cells 41, 42, 43 producing signals mutually spaced by 120 degrees are applied to a differencing amplifier DV to suppress the common components. The amplifier outputs Ub 1 , Ub 2 , Ub 3 , are combined in various proportions by summing resistors O to provide signals at phase positions O, 3E/10, 4E/10, 6E/10, 7E/10 where E is the wavelength of the pattern. These signals are applied to polarity discriminators ST1-ST5 giving a binary indication of the signal polarity. The output of ST1-ST5 is an indication in a five-bit code of the position of the pattern to the nearest E/10. The indication may be transformed into a decimal indication in the 4 : 2 : 2 :1 four-bit code disclosed in British Specification 1,005,054, and movements of the pattern may be indicated by decade stages DS1-DS5. The pattern may be a transmissive or reflective scale viewed through slits, or it may be produced by superimposed gratings of the same or different pitch.
GB4793464A 1963-12-04 1964-11-25 Improvements in and relating to relative motion measuring devices Expired GB1092525A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1489563A CH407569A (en) 1963-12-04 1963-12-04 Digital evaluation device for constantly changing measured variable signals
CH1228564 1964-09-22

Publications (1)

Publication Number Publication Date
GB1092525A true GB1092525A (en) 1967-11-29

Family

ID=25709959

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4793464A Expired GB1092525A (en) 1963-12-04 1964-11-25 Improvements in and relating to relative motion measuring devices

Country Status (4)

Country Link
DE (1) DE1266001B (en)
GB (1) GB1092525A (en)
NL (1) NL6413145A (en)
SE (1) SE329271B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4225931A (en) * 1977-07-01 1980-09-30 Dr. Johannes Heidenhain Gmbh Interpolation apparatus for digital electronic position measuring instrument
GB2126336A (en) * 1982-08-26 1984-03-21 British Aerospace Detection of movement of a cyclic interference waveform such as in a ring laser gyroscope
GB2156989A (en) * 1984-04-02 1985-10-16 Zeiss Jena Veb Carl Device and method for measuring and adjusting lengths
US7099790B2 (en) 2003-10-22 2006-08-29 Canon Kabushiki Kaisha Sensor signal processor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3418798A1 (en) * 1984-05-19 1985-11-21 Mannesmann AG, 4000 Düsseldorf DEVICE FOR THE DIGITAL CONTROL OF A MACHINE OR A DEVICE, IN PARTICULAR A MATRIX PRINTER

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB818981A (en) * 1954-11-09 1959-08-26 Emi Ltd Improvements relating to displacement measuring and position control devices
AT207127B (en) * 1956-11-14 1960-01-11 Leif Eric De Neergaard Device for measuring linear distances or displacements
DE1177353B (en) * 1958-06-11 1964-09-03 Ferranti Ltd Arrangement for determining the changes in position of a moving object, for example the moving part of a machine tool in relation to a reference system
GB914190A (en) * 1960-09-01 1962-12-28 Ferranti Ltd Improvements relating to measuring apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4225931A (en) * 1977-07-01 1980-09-30 Dr. Johannes Heidenhain Gmbh Interpolation apparatus for digital electronic position measuring instrument
GB2126336A (en) * 1982-08-26 1984-03-21 British Aerospace Detection of movement of a cyclic interference waveform such as in a ring laser gyroscope
GB2156989A (en) * 1984-04-02 1985-10-16 Zeiss Jena Veb Carl Device and method for measuring and adjusting lengths
US7099790B2 (en) 2003-10-22 2006-08-29 Canon Kabushiki Kaisha Sensor signal processor
US7184914B2 (en) 2003-10-22 2007-02-27 Canon Kabushiki Kaisha Sensor signal processor

Also Published As

Publication number Publication date
NL6413145A (en) 1965-06-07
DE1266001B (en) 1968-04-11
SE329271B (en) 1970-10-05

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