GB1272038A - Angle measuring instruments - Google Patents

Angle measuring instruments

Info

Publication number
GB1272038A
GB1272038A GB50021/70A GB5002170A GB1272038A GB 1272038 A GB1272038 A GB 1272038A GB 50021/70 A GB50021/70 A GB 50021/70A GB 5002170 A GB5002170 A GB 5002170A GB 1272038 A GB1272038 A GB 1272038A
Authority
GB
United Kingdom
Prior art keywords
pulses
counter
discs
coincident
pulse trains
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
GB50021/70A
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries 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 DE19691953737 external-priority patent/DE1953737C3/en
Application filed by Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1272038A publication Critical patent/GB1272038A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F10/00—Apparatus for measuring unknown time intervals by electric means
    • G04F10/04—Apparatus for measuring unknown time intervals by electric means by counting pulses or half-cycles of an ac
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
    • 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
    • G01D5/245—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 using a variable number of pulses in a train
    • 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
    • G01D5/247—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 using time shifts of pulses
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/22—Analogue/digital converters pattern-reading type
    • H03M1/24—Analogue/digital converters pattern-reading type using relatively movable reader and disc or strip
    • H03M1/28—Analogue/digital converters pattern-reading type using relatively movable reader and disc or strip with non-weighted coding
    • H03M1/30—Analogue/digital converters pattern-reading type using relatively movable reader and disc or strip with non-weighted coding incremental

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

1,272,038. Measuring position. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 21 Oct., 1970 [24 Oct., 1969], No. 50021/70. Heading G4H. In an angle position encoder as described in U.S. Specification 3,278,928, four divided discs are provided in two pairs. One of the two pairs of discs has n divisions and the other n + 1 divisions. Two of the discs, one from each pair are mounted one on each side of a single plate which is driven by a motor. One of the remaining discs is stationary and the other rotates through the angle to be measured. The discs are linked either capacitatively or inductively so that each pair produces a pulse train of n or n+1 pulses per revolution, together with a reference mark at a particular position in the revolution. A course measurement is made by counting the pulses between the reference marks for the two pairs, and a fine measurement is produced by counting the pulses between a reference mark and coincidence of the two pulse trains, i.e. vernier principle. The present invention resides in interpolating between the fine measurements. The two pulse trains i 1 , i 2 are fed to a bi-stable 1 which enables gate 2 on receipt of a pulse on the i 1 line. This permits counter 3 to start counting pulses from an oscillator 4 synchronized with a motor driving the disc. The counter has a capacity corresponding to the number of pulses produced by oscillator 4 in the maximum time interval between pulses on leads i 1 and i 2 when pulses on these lines are judged coincident, i.e. the maximum capacity of counter 3 corresponds to a fine interval. If the pulse trains are not at the coincident position counter 3 overflows and no measurement is recorded. When the pulse trains are at the coincident position the time interval and hence the position between coincident pulses is measured by the counts of counter 3, which are then transferred to a store 7. AND gate 6 is then enabled to indicate the end of a measuring cycle.
GB50021/70A 1969-10-24 1970-10-21 Angle measuring instruments Expired GB1272038A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691953737 DE1953737C3 (en) 1969-10-24 Circuit arrangement for increasing the resolution of an electronic angle measuring device

Publications (1)

Publication Number Publication Date
GB1272038A true GB1272038A (en) 1972-04-26

Family

ID=5749179

Family Applications (1)

Application Number Title Priority Date Filing Date
GB50021/70A Expired GB1272038A (en) 1969-10-24 1970-10-21 Angle measuring instruments

Country Status (5)

Country Link
CA (1) CA955671A (en)
FR (1) FR2066403A5 (en)
GB (1) GB1272038A (en)
NL (1) NL7015317A (en)
SE (1) SE361089B (en)

Also Published As

Publication number Publication date
DE1953737B2 (en) 1977-03-17
CA955671A (en) 1974-10-01
FR2066403A5 (en) 1971-08-06
NL7015317A (en) 1971-04-27
SE361089B (en) 1973-10-15
DE1953737A1 (en) 1971-05-06

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Legal Events

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