JPS564055A - Measuring instrument for number of revolution - Google Patents
Measuring instrument for number of revolutionInfo
- Publication number
- JPS564055A JPS564055A JP7955579A JP7955579A JPS564055A JP S564055 A JPS564055 A JP S564055A JP 7955579 A JP7955579 A JP 7955579A JP 7955579 A JP7955579 A JP 7955579A JP S564055 A JPS564055 A JP S564055A
- Authority
- JP
- Japan
- Prior art keywords
- wheel
- hall
- measuring instrument
- hall device
- revolutions
- 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 detect the number of revolutions of a wheel of a bicycle without bringing a measuring instrument into contact with the wheel, eliminating mechanical sounds from the instrument, and display the results of measurement digitally, by utilizing a Hall element.
CONSTITUTION: When a wheel 2 is rotated, a permanent magnet magnet 1 is also moved circularly along a fixed orbit to pass a Hall device 9. As a result, a magnetic field is applied to the Hall device 9, so that a Hall voltage is generated. An output from the Hall device 9 causes an electronic circuit to be energized. Thus, the number of revolutions of the wheel 2 are digitally displayed 12.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7955579A JPS564055A (en) | 1979-06-22 | 1979-06-22 | Measuring instrument for number of revolution |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7955579A JPS564055A (en) | 1979-06-22 | 1979-06-22 | Measuring instrument for number of revolution |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS564055A true JPS564055A (en) | 1981-01-16 |
Family
ID=13693244
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7955579A Pending JPS564055A (en) | 1979-06-22 | 1979-06-22 | Measuring instrument for number of revolution |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS564055A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57665U (en) * | 1980-06-02 | 1982-01-05 | ||
US5089775A (en) * | 1989-11-15 | 1992-02-18 | Cat Eye Co., Ltd. | Sensor magnet mounting device having an improved mounting structure |
US5596271A (en) * | 1994-05-03 | 1997-01-21 | Multicraft International | Method of and apparatus for detecting the rotation rate of an air moving fan |
JP2001347640A (en) * | 2000-04-06 | 2001-12-18 | Heidelberger Druckmas Ag | Sheet delivery apparatus |
US7061228B2 (en) * | 2002-08-28 | 2006-06-13 | Shimano, Inc. | Apparatus for detecting rotation of a bicycle part |
-
1979
- 1979-06-22 JP JP7955579A patent/JPS564055A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57665U (en) * | 1980-06-02 | 1982-01-05 | ||
US5089775A (en) * | 1989-11-15 | 1992-02-18 | Cat Eye Co., Ltd. | Sensor magnet mounting device having an improved mounting structure |
US5596271A (en) * | 1994-05-03 | 1997-01-21 | Multicraft International | Method of and apparatus for detecting the rotation rate of an air moving fan |
JP2001347640A (en) * | 2000-04-06 | 2001-12-18 | Heidelberger Druckmas Ag | Sheet delivery apparatus |
US7061228B2 (en) * | 2002-08-28 | 2006-06-13 | Shimano, Inc. | Apparatus for detecting rotation of a bicycle part |
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