SE329271B - - Google Patents

Info

Publication number
SE329271B
SE329271B SE1416564A SE1416564A SE329271B SE 329271 B SE329271 B SE 329271B SE 1416564 A SE1416564 A SE 1416564A SE 1416564 A SE1416564 A SE 1416564A SE 329271 B SE329271 B SE 329271B
Authority
SE
Sweden
Prior art keywords
signals
pattern
indication
polarity
discriminators
Prior art date
Application number
SE1416564A
Inventor
T Stutsz
Original Assignee
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 Contraves Ag filed Critical Contraves Ag
Publication of SE329271B publication Critical patent/SE329271B/xx

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.
SE1416564A 1963-12-04 1964-11-24 SE329271B (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
SE329271B true SE329271B (en) 1970-10-05

Family

ID=25709959

Family Applications (1)

Application Number Title Priority Date Filing Date
SE1416564A SE329271B (en) 1963-12-04 1964-11-24

Country Status (4)

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

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2729697A1 (en) * 1977-07-01 1979-01-04 Heidenhain Gmbh Dr Johannes METHOD OF INTERPOLATION
GB2126336B (en) * 1982-08-26 1986-07-09 British Aerospace Detection of movement of a cyclic interference waveform such as in a ring laser gyroscope
DD225497A1 (en) * 1984-04-02 1985-07-31 Zeiss Jena Veb Carl DEVICE AND METHOD FOR MEASURING AND ADJUSTING LENGTHS
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
JP2005127762A (en) 2003-10-22 2005-05-19 Canon Inc Sensor signal processing device

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

Also Published As

Publication number Publication date
DE1266001B (en) 1968-04-11
NL6413145A (en) 1965-06-07
GB1092525A (en) 1967-11-29

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