JPS57110911A - Measurement of length of object by supersonic wave - Google Patents
Measurement of length of object by supersonic waveInfo
- 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
Links
- 238000005259 measurement Methods 0.000 title 1
- 238000001514 detection method Methods 0.000 abstract 2
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.
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)
| 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)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5373161A (en) * | 1976-12-13 | 1978-06-29 | Toshiba Corp | Ultrasonic type position detector |
-
1980
- 1980-12-27 JP JP18604880A patent/JPS57110911A/en active Pending
Patent Citations (1)
| 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)
| 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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