JPS6468620A - Rotation detector - Google Patents
Rotation detectorInfo
- Publication number
- JPS6468620A JPS6468620A JP22509187A JP22509187A JPS6468620A JP S6468620 A JPS6468620 A JP S6468620A JP 22509187 A JP22509187 A JP 22509187A JP 22509187 A JP22509187 A JP 22509187A JP S6468620 A JPS6468620 A JP S6468620A
- Authority
- JP
- Japan
- Prior art keywords
- light
- signal
- shield plate
- sensor
- magnetism
- 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
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Optical Transform (AREA)
Abstract
PURPOSE:To perform fast rotation detection by obtaining an increasing signal from a magnetic sensor with fast response and obtaining a high-accuracy absolute signal by one light shield plate, a light emission part and a light reception part. CONSTITUTION:A magnetic pattern 16 is provided on the flank of the light shield plate 15 in specific form and a sensor 17 which detects the magnetism of the pattern 16 is provided; and the sensor 17 detects the magnetism with mutually opposite polarities by the rotation of a shaft 1 and outputs the increasing signal 17a. A magneto-resistance element having fast response to magnetism originally is used as the sensor 17. The light emission part 11 and light reception part 12 are fixed on both sides of the light shield plate 15 and light is received by light receiving elements 12a and 12b through the window 10 of the light shield plate 15 which rotates to generate two-phase sine waves 13a and 13b which are 90 deg. out of phase with each other; and they are processed by a signal processing part 7 to obtain the absolute signal 7a. Then fast rotation is detected with the signal 17a which varies monotonously with high resolution and fast response and the high-accuracy signal 7a.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22509187A JPS6468620A (en) | 1987-09-08 | 1987-09-08 | Rotation detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22509187A JPS6468620A (en) | 1987-09-08 | 1987-09-08 | Rotation detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6468620A true JPS6468620A (en) | 1989-03-14 |
Family
ID=16823856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22509187A Pending JPS6468620A (en) | 1987-09-08 | 1987-09-08 | Rotation detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6468620A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018507420A (en) * | 2015-02-25 | 2018-03-15 | ギュンター グラウＧｕｅｎｔｅｒ Ｇｒａｕ | Device for measuring the rotation angle of a counting mechanism and a multiphase rotary encoder and corresponding sensor |
| JP2018119930A (en) * | 2017-01-27 | 2018-08-02 | キヤノン株式会社 | Sensor and robot |
| JP2021051098A (en) * | 2021-01-13 | 2021-04-01 | キヤノン株式会社 | Driving device, robot, and robotic device |
-
1987
- 1987-09-08 JP JP22509187A patent/JPS6468620A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018507420A (en) * | 2015-02-25 | 2018-03-15 | ギュンター グラウＧｕｅｎｔｅｒ Ｇｒａｕ | Device for measuring the rotation angle of a counting mechanism and a multiphase rotary encoder and corresponding sensor |
| JP2018119930A (en) * | 2017-01-27 | 2018-08-02 | キヤノン株式会社 | Sensor and robot |
| JP2021051098A (en) * | 2021-01-13 | 2021-04-01 | キヤノン株式会社 | Driving device, robot, and robotic device |
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