GB1092525A - Improvements in and relating to relative motion measuring devices - Google Patents
Improvements in and relating to relative motion measuring devicesInfo
- 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
Links
- 125000004122 cyclic group Chemical group 0.000 abstract 1
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.
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)
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)
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)
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 |
-
1964
- 1964-10-20 DE DE1964C0034150 patent/DE1266001B/en active Pending
- 1964-11-11 NL NL6413145A patent/NL6413145A/xx unknown
- 1964-11-24 SE SE1416564A patent/SE329271B/xx unknown
- 1964-11-25 GB GB4793464A patent/GB1092525A/en not_active Expired
Cited By (5)
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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