JPS641924A - Dynamic quantity sensor - Google Patents
Dynamic quantity sensorInfo
- Publication number
- JPS641924A JPS641924A JP15682187A JP15682187A JPS641924A JP S641924 A JPS641924 A JP S641924A JP 15682187 A JP15682187 A JP 15682187A JP 15682187 A JP15682187 A JP 15682187A JP S641924 A JPS641924 A JP S641924A
- Authority
- JP
- Japan
- Prior art keywords
- pedestal
- alloy
- inductance
- change
- cylindrical
- 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
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
PURPOSE: To achieve a highly accurate measurement of a pressure with a simple construction, by applying a force working on a pedestal to an alloy having an electrostrictive effect to measure a pressure applied to the said pedestal from a value of the resulting inductance.
CONSTITUTION: A pedestal 2 as force transmitting means is provided on one side of a cylindrical type sensor body 1 composed of a 45% Ni-Fe alloy and a cylindrical Fe based amorphous alloy 4 having a magnetostrictive effect, a coil 5 and a circuit 6 for detection are arranged inside the sensor body 1. A force applied from the pedestal 2 displaces the cylindrical Fe based amorphous alloy 4 through a thin part of the portion of a contact 3. Magnetic permeability of the alloy 4 decreases by the stress displacement to cause a change in inductance. This inductance change is inputted into the detection circuit 6 through the coil 5 wound about the alloy 4. The detection circuit 6 detects a pressure applied to the pedestal 2 from said change in inductance.
COPYRIGHT: (C)1989,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62-156821A JPH011924A (en) | 1987-06-24 | Mechanical quantity sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62-156821A JPH011924A (en) | 1987-06-24 | Mechanical quantity sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS641924A true JPS641924A (en) | 1989-01-06 |
| JPH011924A JPH011924A (en) | 1989-01-06 |
Family
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