JPS57110911A - Measurement of length of object by supersonic wave - Google Patents

Measurement of length of object by supersonic wave

Info

Publication number
JPS57110911A
JPS57110911A JP18604880A JP18604880A JPS57110911A JP S57110911 A JPS57110911 A JP S57110911A JP 18604880 A JP18604880 A JP 18604880A JP 18604880 A JP18604880 A JP 18604880A JP S57110911 A JPS57110911 A JP S57110911A
Authority
JP
Japan
Prior art keywords
target
receiver
transmitter
length
signal
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
JP18604880A
Other languages
Japanese (ja)
Inventor
Hisashi Miyazawa
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.)
TOUWA SEISAKUSHO KK
TOWA SEISAKUSHO KK
Original Assignee
TOUWA SEISAKUSHO KK
TOWA SEISAKUSHO KK
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 TOUWA SEISAKUSHO KK, TOWA SEISAKUSHO KK filed Critical TOUWA SEISAKUSHO KK
Priority to JP18604880A priority Critical patent/JPS57110911A/en
Publication of JPS57110911A publication Critical patent/JPS57110911A/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
    • G01B17/00—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)

Abstract

PURPOSE:To measure the length of a target easily and accurately by detecting a point which abruptly changes at the detection starting position of the target and the detection terminating position, measuring the interval between those changing points and finally performing an operation based on the interval thus obtained. CONSTITUTION:When a wave transmitter-receiver 12 begins to detect a target 11 as it reches the position of D by moving to the right, the level of a standard signal m begins to fall, and the signal m shows the lowest level when the transmitter-receiver 12 reaches the position of E. And, the level of the standard signal m abruptly rises when the transmitter-receiver 12 reaches the position of F. On the other hand, a measuring signal n from the target 11 becomes a curve having changing points q and r when the transmitter-receiver 12 is positioned at D and G. Intervals between changing points, l-a, l+a, are obtained respectively and those values are added, and the length of the target, l, can be obtained by dividing the sum by 2.
JP18604880A 1980-12-27 1980-12-27 Measurement of length of object by supersonic wave Pending JPS57110911A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18604880A JPS57110911A (en) 1980-12-27 1980-12-27 Measurement of length of object by supersonic wave

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18604880A JPS57110911A (en) 1980-12-27 1980-12-27 Measurement of length of object by supersonic wave

Publications (1)

Publication Number Publication Date
JPS57110911A true JPS57110911A (en) 1982-07-10

Family

ID=16181479

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18604880A Pending JPS57110911A (en) 1980-12-27 1980-12-27 Measurement of length of object by supersonic wave

Country Status (1)

Country Link
JP (1) JPS57110911A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59178314A (en) * 1983-03-29 1984-10-09 Agency Of Ind Science & Technol Method for detecting and controlling position of submarine construction on seabed from sea-surface
EP0704672A3 (en) * 1994-09-27 1998-09-30 Peter Lisec Procedure to assess the contour of flat articles
FR2771502A1 (en) * 1997-11-24 1999-05-28 Intercontrole Sa Determination of the separation between two immersed objects

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5373161A (en) * 1976-12-13 1978-06-29 Toshiba Corp Ultrasonic type position detector

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5373161A (en) * 1976-12-13 1978-06-29 Toshiba Corp Ultrasonic type position detector

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59178314A (en) * 1983-03-29 1984-10-09 Agency Of Ind Science & Technol Method for detecting and controlling position of submarine construction on seabed from sea-surface
JPH0347442B2 (en) * 1983-03-29 1991-07-19 Kogyo Gijutsuin
EP0704672A3 (en) * 1994-09-27 1998-09-30 Peter Lisec Procedure to assess the contour of flat articles
FR2771502A1 (en) * 1997-11-24 1999-05-28 Intercontrole Sa Determination of the separation between two immersed objects

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