JPS57116203A - Position detector - Google Patents

Position detector

Info

Publication number
JPS57116203A
JPS57116203A JP56002943A JP294381A JPS57116203A JP S57116203 A JPS57116203 A JP S57116203A JP 56002943 A JP56002943 A JP 56002943A JP 294381 A JP294381 A JP 294381A JP S57116203 A JPS57116203 A JP S57116203A
Authority
JP
Japan
Prior art keywords
detecting
point
delay line
reflected wave
coil
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
JP56002943A
Other languages
Japanese (ja)
Inventor
Nobuo Kitamura
Eiji Tamaru
Takahisa Tsuchiya
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP56002943A priority Critical patent/JPS57116203A/en
Publication of JPS57116203A publication Critical patent/JPS57116203A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/003—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring position, not involving coordinate determination

Landscapes

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

Abstract

PURPOSE:To simplify the structure of the device by providing on a base plate a magnetostrictive delay line with both ends fixed, providing a magnetostriction generating means and a detecting means in the vicinity of a reference point of the magnetostrictive delay line and thus constituting the device so as to detect a reflected wave at a detecting point. CONSTITUTION:On the base plate 11 is provided one magnetostrictive delay line 1 with both ends supported by a dampers 7 and 8, while on one end thereof are arranged fixedly a driving coil 2 and a detecting coil 3 which is separated in length l from the former. When the detecting point p separated in Lx from the detecting coil 3 is pressed by a finger, the position of the point p is found from a time required from application of a pulse to the driving coil 3 to detection of the reflected wave from the detecting point p. When a counter is employed, it is offset beforehand by a count value equivalent to the value of l and by a count value equivalent to a phase difference between a traveling wave and the reflected wave. By this constitution, the structure of the device is simplified.
JP56002943A 1981-01-12 1981-01-12 Position detector Pending JPS57116203A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56002943A JPS57116203A (en) 1981-01-12 1981-01-12 Position detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56002943A JPS57116203A (en) 1981-01-12 1981-01-12 Position detector

Publications (1)

Publication Number Publication Date
JPS57116203A true JPS57116203A (en) 1982-07-20

Family

ID=11543437

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56002943A Pending JPS57116203A (en) 1981-01-12 1981-01-12 Position detector

Country Status (1)

Country Link
JP (1) JPS57116203A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02163616A (en) * 1988-12-19 1990-06-22 Jeco Co Ltd Position sensor
DE102006005896A1 (en) * 2006-02-09 2007-08-16 Krauss-Maffei Wegmann Gmbh & Co. Kg Magnetostrictive position sensor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02163616A (en) * 1988-12-19 1990-06-22 Jeco Co Ltd Position sensor
DE102006005896A1 (en) * 2006-02-09 2007-08-16 Krauss-Maffei Wegmann Gmbh & Co. Kg Magnetostrictive position sensor

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