JPS5563763A - Detecting method of number of revolution - Google Patents
Detecting method of number of revolutionInfo
- Publication number
- JPS5563763A JPS5563763A JP13699378A JP13699378A JPS5563763A JP S5563763 A JPS5563763 A JP S5563763A JP 13699378 A JP13699378 A JP 13699378A JP 13699378 A JP13699378 A JP 13699378A JP S5563763 A JPS5563763 A JP S5563763A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- microprocessor
- detection means
- revolution
- high speed
- 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
- Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
Abstract
PURPOSE: To assuredly detect the number of revolution even at high speed for a rotary body rotatable in both directions in a microprocessor which is operated by not a high speed program.
CONSTITUTION: The condition is selected so that 0<ϕ<d.2π for d≤0.5, and 0< ϕ<(1-d).2π for d>0.5, where d is assumed to be the due-factor of shaped-out-put signal of the light-receival-element 4a,5a in the rotation-detection-means, and ϕ the phase difference between two signals. Further, select to have the ratio of ϕ and d.2π-ϕ to be nearly equal to the speed ratio of forward and backward rotations at their highest speeds. The microprocessor 22 stores the detected signal on the memory, and compares the signal from the detection means 4a with the stored signal. Then, the microprocessor 22, by using the leading and trailing edges when the signal from the detection means 5a is at a high level, controls the counter to allow the rotational speed to be indicated on the display 33.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13699378A JPS5563763A (en) | 1978-11-07 | 1978-11-07 | Detecting method of number of revolution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13699378A JPS5563763A (en) | 1978-11-07 | 1978-11-07 | Detecting method of number of revolution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5563763A true JPS5563763A (en) | 1980-05-14 |
Family
ID=15188267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13699378A Pending JPS5563763A (en) | 1978-11-07 | 1978-11-07 | Detecting method of number of revolution |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5563763A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6080310U (en) * | 1983-11-02 | 1985-06-04 | シャープ株式会社 | Rotation speed detection device |
| US4791366A (en) * | 1985-10-31 | 1988-12-13 | Alpine Electronics Inc. | Apparatus including a pair of angularly spaced sensors for detecting angle of rotation of a rotary member |
| US5486759A (en) * | 1992-10-21 | 1996-01-23 | Robert Bosch Gmbh | Device for detecting the movement of a movable component and signalling the detected movement over a single line |
-
1978
- 1978-11-07 JP JP13699378A patent/JPS5563763A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6080310U (en) * | 1983-11-02 | 1985-06-04 | シャープ株式会社 | Rotation speed detection device |
| US4791366A (en) * | 1985-10-31 | 1988-12-13 | Alpine Electronics Inc. | Apparatus including a pair of angularly spaced sensors for detecting angle of rotation of a rotary member |
| US5486759A (en) * | 1992-10-21 | 1996-01-23 | Robert Bosch Gmbh | Device for detecting the movement of a movable component and signalling the detected movement over a single line |
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