JPS564055A - Measuring instrument for number of revolution - Google Patents

Measuring instrument for number of revolution

Info

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
Application number
JP7955579A
Other languages
Japanese (ja)
Inventor
Kenji Oda
Yasuyuki Wakebe
Hironori Matsumoto
Yasuyuki Tsuchida
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP7955579A priority Critical patent/JPS564055A/en
Publication of JPS564055A publication Critical patent/JPS564055A/en
Pending legal-status Critical Current

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
JP7955579A 1979-06-22 1979-06-22 Measuring instrument for number of revolution Pending JPS564055A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (5)

* Cited by examiner, † Cited by third party
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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