JPS577515A - Encoder - Google Patents

Encoder

Info

Publication number
JPS577515A
JPS577515A JP8168680A JP8168680A JPS577515A JP S577515 A JPS577515 A JP S577515A JP 8168680 A JP8168680 A JP 8168680A JP 8168680 A JP8168680 A JP 8168680A JP S577515 A JPS577515 A JP S577515A
Authority
JP
Japan
Prior art keywords
light
pitch
plate
dark pattern
outputs
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.)
Pending
Application number
JP8168680A
Other languages
Japanese (ja)
Inventor
Hiroshi Tamaki
Fumio Otomo
Kazuaki Kimura
Masakata Minami
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.)
Toshiba Corp
Tokyo Optical Co Ltd
Original Assignee
Toshiba Corp
Tokyo Optical Co Ltd
Tokyo Shibaura Electric Co 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
Application filed by Toshiba Corp, Tokyo Optical Co Ltd, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP8168680A priority Critical patent/JPS577515A/en
Publication of JPS577515A publication Critical patent/JPS577515A/en
Pending 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Transform (AREA)

Abstract

PURPOSE:To eliminate the need for a complicated process circuit and to enable to obtain a high resolution through the employment of an inner insertion method, by a method wherein a device is located so that a pitch of a light and dark pattern of a code plate is different from a pitch of a group of a group of linear sensors. CONSTITUTION:A light from a light source 3 illuminates a light and dark pattern of a code plate 1, and the light and dark pattern is projected onto a linear sensor 2. In this case, the pitch of the light and dark pattern is caused to slightly differ from a pitch of a group of sensors 2. The output of the sensor 2 generated resulting from the movement of a plate 1 is amplified (6) and is inputted to a signal distributor 8. The distributor 8 outputs a component of, for example, an element A to an SA terminal and an output of an element C to an SC terminal, and input them to envelope curve detectors 9 and 10, respectively. The outputs of the detectors 9 and 10 are compared with each other by means of coincidence pulse generator 11, and when the detectors 9 and 10 equalize in the outputs, a pulse is sent to stop counting of a counter 12. This causes the repeating change of the counting value of the counter 12 in proportion to the movement distance of the plate 1 and obtains resolution of an internal insertion due to a difference between the pattern of the plate 1 and the sensor 2.
JP8168680A 1980-06-17 1980-06-17 Encoder Pending JPS577515A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8168680A JPS577515A (en) 1980-06-17 1980-06-17 Encoder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8168680A JPS577515A (en) 1980-06-17 1980-06-17 Encoder

Publications (1)

Publication Number Publication Date
JPS577515A true JPS577515A (en) 1982-01-14

Family

ID=13753234

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8168680A Pending JPS577515A (en) 1980-06-17 1980-06-17 Encoder

Country Status (1)

Country Link
JP (1) JPS577515A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5952713A (en) * 1982-09-20 1984-03-27 Shimadzu Corp Measuring method of rotation angle
JPH0489521A (en) * 1990-07-31 1992-03-23 Matsushita Electric Ind Co Ltd Detecting device of rotation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5952713A (en) * 1982-09-20 1984-03-27 Shimadzu Corp Measuring method of rotation angle
JPH0489521A (en) * 1990-07-31 1992-03-23 Matsushita Electric Ind Co Ltd Detecting device of rotation

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