JPS643587A - System for detecting moving body - Google Patents
System for detecting moving bodyInfo
- Publication number
- JPS643587A JPS643587A JP62159221A JP15922187A JPS643587A JP S643587 A JPS643587 A JP S643587A JP 62159221 A JP62159221 A JP 62159221A JP 15922187 A JP15922187 A JP 15922187A JP S643587 A JPS643587 A JP S643587A
- Authority
- JP
- Japan
- Prior art keywords
- moving body
- magnet
- sensor
- approach
- gap
- 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 Magnetic Variables (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
PURPOSE:To prevent erroneous detection by mounting a magnet to a moving body, fixing a magneto-optical field sensor using a Faraday effect element to the position corresponding to the movement of the magnet and detecting the approach or secession of the magnet to or from the magnetic field sensor according to the movement of the moving body. CONSTITUTION:The magnet 8 of an annular shape having a gap 9 is mounted to the moving body 1 and the magneto-optical sensor 10 is fixed in the direction orthogonal with the line connecting the gap 9. Optical fibers 4, 5 are drawn out of the sensor 10. The gap 9 of the magnet 8 mounted to the moving body 1 is so adjusted that the face of the sensor 10 fits therein when the moving body 1 moves. The output of the sensor 10 changes as the moving body 1 approach or secede to or from the sensor. The movement of the moving body is thus detected. The approach in particular is exactly detected by the magnetic coupling of the annular magnet or iron core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62159221A JPS643587A (en) | 1987-06-25 | 1987-06-25 | System for detecting moving body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62159221A JPS643587A (en) | 1987-06-25 | 1987-06-25 | System for detecting moving body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS643587A true JPS643587A (en) | 1989-01-09 |
Family
ID=15688980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62159221A Pending JPS643587A (en) | 1987-06-25 | 1987-06-25 | System for detecting moving body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS643587A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009151762A (en) * | 2007-12-20 | 2009-07-09 | Ncr Corp | Card reader device and automatic teller machine |
-
1987
- 1987-06-25 JP JP62159221A patent/JPS643587A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009151762A (en) * | 2007-12-20 | 2009-07-09 | Ncr Corp | Card reader device and automatic teller machine |
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