JPS55472A - Speed detector - Google Patents
Speed detectorInfo
- Publication number
- JPS55472A JPS55472A JP3562079A JP3562079A JPS55472A JP S55472 A JPS55472 A JP S55472A JP 3562079 A JP3562079 A JP 3562079A JP 3562079 A JP3562079 A JP 3562079A JP S55472 A JPS55472 A JP S55472A
- Authority
- JP
- Japan
- Prior art keywords
- speed
- counter
- period
- counted
- preset
- 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
- Linear Or Angular Velocity Measurement And Their Indicating Devices (AREA)
Abstract
PURPOSE: To measure the speed over a wide range from high to low levels in a preset accuracy by controlling the counting period of a counter, which is operative to count the pulses generated in accordance with the speed, in response to the speed.
CONSTITUTION: When pulses corresponding to the speed generated vy a pulse generator 1 are counted by a counter 5 so that the counted value reaches a preset one, the counter 5 commands a time measuring device 3 to accomplish its operation. As a result, the device 3 counts the clocks of high frequency, which are generated by a clock generator 2, until it is supplied with a next command, so that the speed is detected by a speed detector 4. In accordance with the detected value, a pulse counted value calculating device 6 controls the setting of the counted period of the counter 5 such that the period is inversely proportional to the speed. As a result, the device 3 counts the clocks for a preset period irrespective of the low and high speeds so that the speed over a wide range is measured always in a preset accuracy by the device 4 which is controlled in accordance with the set value of the device 6.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3562079A JPS55472A (en) | 1979-03-28 | 1979-03-28 | Speed detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3562079A JPS55472A (en) | 1979-03-28 | 1979-03-28 | Speed detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55472A true JPS55472A (en) | 1980-01-05 |
Family
ID=12446892
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3562079A Pending JPS55472A (en) | 1979-03-28 | 1979-03-28 | Speed detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55472A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57204457A (en) * | 1981-06-12 | 1982-12-15 | Toshiba Corp | Revolving speed detecting device |
JPS58211614A (en) * | 1982-06-02 | 1983-12-09 | Yamato Scale Co Ltd | Gyro-type force measuring method |
JPS5929722U (en) * | 1982-08-17 | 1984-02-24 | 愛知時計電機株式会社 | Electronic flow meter with instantaneous flow rate display |
JPS60121976A (en) * | 1983-12-01 | 1985-06-29 | Sumitomo Metal Ind Ltd | Method of controlling speed of rolling mill |
JPS6128868A (en) * | 1984-07-18 | 1986-02-08 | Yanmar Diesel Engine Co Ltd | Measurement of revolutions |
JPS62239061A (en) * | 1986-04-11 | 1987-10-19 | Hitachi Koki Co Ltd | Rotating speed detecting method |
JPS6426164A (en) * | 1987-07-22 | 1989-01-27 | Shimadzu Corp | Speed detecting device |
JPH01210866A (en) * | 1988-02-18 | 1989-08-24 | Toyota Autom Loom Works Ltd | Non-contact type speed detecting device |
JP2012163413A (en) * | 2011-02-04 | 2012-08-30 | Nsk Ltd | Physical quantity measurement instrument for rotating member |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5077068A (en) * | 1973-07-03 | 1975-06-24 | ||
JPS50119684A (en) * | 1974-03-04 | 1975-09-19 |
-
1979
- 1979-03-28 JP JP3562079A patent/JPS55472A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5077068A (en) * | 1973-07-03 | 1975-06-24 | ||
JPS50119684A (en) * | 1974-03-04 | 1975-09-19 |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57204457A (en) * | 1981-06-12 | 1982-12-15 | Toshiba Corp | Revolving speed detecting device |
JPS58211614A (en) * | 1982-06-02 | 1983-12-09 | Yamato Scale Co Ltd | Gyro-type force measuring method |
JPS5929722U (en) * | 1982-08-17 | 1984-02-24 | 愛知時計電機株式会社 | Electronic flow meter with instantaneous flow rate display |
JPS60121976A (en) * | 1983-12-01 | 1985-06-29 | Sumitomo Metal Ind Ltd | Method of controlling speed of rolling mill |
JPS6128868A (en) * | 1984-07-18 | 1986-02-08 | Yanmar Diesel Engine Co Ltd | Measurement of revolutions |
JPS62239061A (en) * | 1986-04-11 | 1987-10-19 | Hitachi Koki Co Ltd | Rotating speed detecting method |
JPS6426164A (en) * | 1987-07-22 | 1989-01-27 | Shimadzu Corp | Speed detecting device |
JPH01210866A (en) * | 1988-02-18 | 1989-08-24 | Toyota Autom Loom Works Ltd | Non-contact type speed detecting device |
JP2012163413A (en) * | 2011-02-04 | 2012-08-30 | Nsk Ltd | Physical quantity measurement instrument for rotating member |
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