JPS5582012A - Displacement meter of eddy current type - Google Patents
Displacement meter of eddy current typeInfo
- Publication number
- JPS5582012A JPS5582012A JP15515878A JP15515878A JPS5582012A JP S5582012 A JPS5582012 A JP S5582012A JP 15515878 A JP15515878 A JP 15515878A JP 15515878 A JP15515878 A JP 15515878A JP S5582012 A JPS5582012 A JP S5582012A
- Authority
- JP
- Japan
- Prior art keywords
- detection coil
- displacement meter
- eddy current
- coil
- current type
- 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
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
PURPOSE: To establish the eddy current type displacement meter without being subjected to the effect of external noise, by connecting the conversion of the displacement meter consisting of crystal oscillator and constant voltage error detection amplifier to the detection coil with the three equal length coaxial cables.
CONSTITUTION: The coil L of the T-type circuit is the detection coil for the displacement meter, and the capacitor C1 is the resonance capacitor. If the measured object is not near the detection coil L, the frequency is almost turned to the oscillation frequency of the crystal oscillator 1. When the measured metal approaches the detection coil L, the inductance of the detection coil L is changed and the parallel resornance impedance of the resonant circuits C1, L is changed, In this case, the coaxial cables W1, W2, W3 are not the resonance element and the signal attenuation only is obtained, then the detection coil A and the conversion B can be detached from the coaxial cable. Accordingly, no power supply is required for a hazardous place and the effect of external noise can be avoided.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15515878A JPS5582012A (en) | 1978-12-14 | 1978-12-14 | Displacement meter of eddy current type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15515878A JPS5582012A (en) | 1978-12-14 | 1978-12-14 | Displacement meter of eddy current type |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5582012A true JPS5582012A (en) | 1980-06-20 |
| JPH0219401B2 JPH0219401B2 (en) | 1990-05-01 |
Family
ID=15599786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15515878A Granted JPS5582012A (en) | 1978-12-14 | 1978-12-14 | Displacement meter of eddy current type |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5582012A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58182102U (en) * | 1982-05-31 | 1983-12-05 | 日本原子力事業株式会社 | Detection coil for eddy current testing equipment |
| RU2487314C1 (en) * | 2011-12-23 | 2013-07-10 | Открытое акционерное общество "Научно-исследовательский институт физических измерений" | Vortex-current displacement transducer |
-
1978
- 1978-12-14 JP JP15515878A patent/JPS5582012A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58182102U (en) * | 1982-05-31 | 1983-12-05 | 日本原子力事業株式会社 | Detection coil for eddy current testing equipment |
| RU2487314C1 (en) * | 2011-12-23 | 2013-07-10 | Открытое акционерное общество "Научно-исследовательский институт физических измерений" | Vortex-current displacement transducer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0219401B2 (en) | 1990-05-01 |
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