JPS5633521A - Device for measuring stress - Google Patents
Device for measuring stressInfo
- Publication number
- JPS5633521A JPS5633521A JP10883979A JP10883979A JPS5633521A JP S5633521 A JPS5633521 A JP S5633521A JP 10883979 A JP10883979 A JP 10883979A JP 10883979 A JP10883979 A JP 10883979A JP S5633521 A JPS5633521 A JP S5633521A
- Authority
- JP
- Japan
- Prior art keywords
- sensor
- stress
- gap
- substance
- voltage
- 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
Abstract
PURPOSE: To enable measurement of small error even if there is a gap between a magnetic sensor and a ferromagnetic substance, by determining the stress of the ferromagnetic substance in terms of the output voltage across a magnetic flux detection coil with a prescribed phase difference from the exciting current of a magnetism sensor.
CONSTITUTION: When the excitation coil 9 of a magnetism sensor 7 is energized, a magnetic circuit is composed of the sensor 7 and a ferromagnetic substance 11 and a voltage which varies depending on the stress of the substance is produced across a magnetic flux detection coil 10. The sensor 7 is eqivalent to a transformer with a load consisting of an inductance L and a resistance R and connected to the coil 10. The inductance L greatly varies depending on the gap between the sensor 7 and the ferromagnetic substance 11 but the resistance R does not vary depending on the gap. On the other hand, the change in the inductance L due to that in the stress of the substance 11 is small but the change in the resistance R due to that in the stress is large. A voltage, which is detected by a voltage detector 14 and whose phase is equal to or different by 90° from that of an exciting current detected by a current detector 13, is selected through a selector circuit 15. This results in enabling accurate stress measurement of small error independently of the gap.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10883979A JPS5633521A (en) | 1979-08-27 | 1979-08-27 | Device for measuring stress |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10883979A JPS5633521A (en) | 1979-08-27 | 1979-08-27 | Device for measuring stress |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5633521A true JPS5633521A (en) | 1981-04-04 |
Family
ID=14494870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10883979A Pending JPS5633521A (en) | 1979-08-27 | 1979-08-27 | Device for measuring stress |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5633521A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6033902A (en) * | 1983-08-05 | 1985-02-21 | 財団法人鉄道総合技術研究所 | Absolute correction of track correcting machine |
| JPS6033901A (en) * | 1983-08-05 | 1985-02-21 | 財団法人鉄道総合技術研究所 | Absolute correction of track correcting machine |
| JPS6160906A (en) * | 1984-09-03 | 1986-03-28 | 財団法人鉄道総合技術研究所 | Track shift inspection and measuring apparatus |
| CN104697678A (en) * | 2015-03-09 | 2015-06-10 | 中国科学院宁波材料技术与工程研究所 | Sensor for detecting weak stress and preparation method of sensor |
-
1979
- 1979-08-27 JP JP10883979A patent/JPS5633521A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6033902A (en) * | 1983-08-05 | 1985-02-21 | 財団法人鉄道総合技術研究所 | Absolute correction of track correcting machine |
| JPS6033901A (en) * | 1983-08-05 | 1985-02-21 | 財団法人鉄道総合技術研究所 | Absolute correction of track correcting machine |
| JPS6160906A (en) * | 1984-09-03 | 1986-03-28 | 財団法人鉄道総合技術研究所 | Track shift inspection and measuring apparatus |
| CN104697678A (en) * | 2015-03-09 | 2015-06-10 | 中国科学院宁波材料技术与工程研究所 | Sensor for detecting weak stress and preparation method of sensor |
| CN104697678B (en) * | 2015-03-09 | 2017-07-21 | 中国科学院宁波材料技术与工程研究所 | It is a kind of to be used to detect sensor of faint stress and preparation method thereof |
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