JPS557665A - Thickness gauge of ultrasonic wave type - Google Patents
Thickness gauge of ultrasonic wave typeInfo
- Publication number
- JPS557665A JPS557665A JP8112878A JP8112878A JPS557665A JP S557665 A JPS557665 A JP S557665A JP 8112878 A JP8112878 A JP 8112878A JP 8112878 A JP8112878 A JP 8112878A JP S557665 A JPS557665 A JP S557665A
- Authority
- JP
- Japan
- Prior art keywords
- range
- measured object
- values
- ultrasonic wave
- given
- 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.)
- Granted
Links
Landscapes
- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
Abstract
PURPOSE: To measure the thickness without being affected by the unevenness on the surface of measured object, by measuring the time difference of the reflection waves from the surface and rear surface of measured object and obtaining the average value within a given range.
CONSTITUTION: Ultrasonic wave pulses are emitted on the measured object 6 with a given distance, the FF circuit 9 is set or reset with the reflection waves from the front and rear surfaces, and the pulses of the oscillator 11 passing through the period are counted 12 to obtain the time difference. This value is discriminated with the upper and lower limit discrimination circuit 19 whether it is within a given range or not. Only the values within the range are integrated 20 for a given number by m, the average value is calculated 15 and they are D/A converted 17 and outputted Z. In this case, if the values are at plus side from the range, they are all thrown away and when the data at minus side continue, they are directly converted 17 and outputted. Thus, peculiar data are thrown away to obtain the data closer to real values and the defect on the surface can also be detected.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8112878A JPS5839288B2 (en) | 1978-07-04 | 1978-07-04 | Ultrasonic thickness gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8112878A JPS5839288B2 (en) | 1978-07-04 | 1978-07-04 | Ultrasonic thickness gauge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS557665A true JPS557665A (en) | 1980-01-19 |
| JPS5839288B2 JPS5839288B2 (en) | 1983-08-29 |
Family
ID=13737746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8112878A Expired JPS5839288B2 (en) | 1978-07-04 | 1978-07-04 | Ultrasonic thickness gauge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5839288B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5710407A (en) * | 1980-05-19 | 1982-01-20 | Neratoom | Device for measuring wall thickness |
| JPS609562A (en) * | 1983-06-28 | 1985-01-18 | Mitsubishi Electric Corp | Device for measuring solidification thickness of billet |
| JPS6031010A (en) * | 1983-07-29 | 1985-02-16 | Nippon Steel Corp | Apparatus for measuring thickness of solidified cast piece |
| JPS60191380A (en) * | 1985-02-15 | 1985-09-28 | 株式会社日立製作所 | Surface-back discriminator for paper money |
-
1978
- 1978-07-04 JP JP8112878A patent/JPS5839288B2/en not_active Expired
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5710407A (en) * | 1980-05-19 | 1982-01-20 | Neratoom | Device for measuring wall thickness |
| JPH0143881B2 (en) * | 1980-05-19 | 1989-09-25 | Nukon Eng Ando Kontorakuteingu Bv | |
| JPS609562A (en) * | 1983-06-28 | 1985-01-18 | Mitsubishi Electric Corp | Device for measuring solidification thickness of billet |
| JPH0464788B2 (en) * | 1983-06-28 | 1992-10-16 | Mitsubishi Electric Corp | |
| JPS6031010A (en) * | 1983-07-29 | 1985-02-16 | Nippon Steel Corp | Apparatus for measuring thickness of solidified cast piece |
| JPH0236163B2 (en) * | 1983-07-29 | 1990-08-15 | Shinnippon Seitetsu Kk | |
| JPS60191380A (en) * | 1985-02-15 | 1985-09-28 | 株式会社日立製作所 | Surface-back discriminator for paper money |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5839288B2 (en) | 1983-08-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5794627A (en) | Stress distribution measuring instrument | |
| JPS5522163A (en) | Engine rpm detector | |
| JPS5750653A (en) | Test piece for ultrasonic flaw detection | |
| JPS557665A (en) | Thickness gauge of ultrasonic wave type | |
| JPS5697817A (en) | Cracking shape detecting method | |
| JPS56164953A (en) | Ultrasonic inspecting device for junction part | |
| JPS5796203A (en) | Contactless displacement detector employing optical fiber | |
| JPS57187609A (en) | Measuring device for decrease in wall thickness | |
| JPS54149670A (en) | Circuit device for detecting ultrasonic wave propagating time | |
| JPS55107911A (en) | Method of average calculation for thickness meter | |
| JPS5578207A (en) | Ultrasonic thickness meter | |
| JPS5669505A (en) | Laser position detecting device | |
| JPS5689021A (en) | Acoustic level measuring method | |
| JPS54108599A (en) | Detecting method for kind of vehicle using microprocessor | |
| JPS566118A (en) | Liquid-level measuring method | |
| JPS5560850A (en) | Sound wave monitor | |
| JPS60230022A (en) | Measuring method of level of internal surface of hopper | |
| CA1224869A (en) | Ultrasonic sensing | |
| SE9400571D0 (en) | Method and device for volume measurement | |
| JPS562576A (en) | Ultrasonic snowfall sensor | |
| JPS57124211A (en) | Ultrasonic measuring device | |
| JPS641957A (en) | Measurement of thickness of scale in pipe | |
| JPS5676076A (en) | Measuring device for depth of snow cover | |
| JPS56129806A (en) | Detection of shape of rectangular material in ultrasonic inspection | |
| CHERRY | Calibration of a high frequency monostatic acoustic echosounder(M. S. Thesis) |