JPS6431053A - Car speed detector - Google Patents
Car speed detectorInfo
- Publication number
- JPS6431053A JPS6431053A JP62187112A JP18711287A JPS6431053A JP S6431053 A JPS6431053 A JP S6431053A JP 62187112 A JP62187112 A JP 62187112A JP 18711287 A JP18711287 A JP 18711287A JP S6431053 A JPS6431053 A JP S6431053A
- Authority
- JP
- Japan
- Prior art keywords
- speed
- frequency
- output
- definite
- signal
- 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 obtain a speed detection signal reduced in pulsation even when the speed of a position detecting means is low, by providing the position detecting means, the first and second frequency-voltage converting means and the first and second analogue switches. CONSTITUTION:An amplifying means 22, which amplifies the output of the first frequency-voltage converting means 3 proportional to the frequency of the input signal of the position detecting means 1 and the output of the second frequency-voltage converting means 21 outputting the voltage proportional to the frequency of the signal obtained by multiplying the output signal of the means 1 by N, and the first and second analogue switches 23, 24 are provided. Further a voltage level comparing means 25 detecting the speed of the means 1 to a voltage level comparing means 25 detecting the speed of the means 1 to turn the switch 24 ON when said speed is a definite speed or less and turning the switch 23 OFF when said speed is the definite speed or more and a filter means 4 inputting the outputs of the switches 23, 24 are provided. When the speed of the means 1 is within a low speed region of the definite speed or less, the output of the means 22 low in pulsation is issued and, in a high speed region of the definite speed or more, the output of the means 3 stable in a signal and reduced in pulsation within the high speed region is issued.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62187112A JPS6431053A (en) | 1987-07-27 | 1987-07-27 | Car speed detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62187112A JPS6431053A (en) | 1987-07-27 | 1987-07-27 | Car speed detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6431053A true JPS6431053A (en) | 1989-02-01 |
Family
ID=16200313
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62187112A Pending JPS6431053A (en) | 1987-07-27 | 1987-07-27 | Car speed detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6431053A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0336957U (en) * | 1989-08-22 | 1991-04-10 | ||
JP2011027448A (en) * | 2009-07-22 | 2011-02-10 | Ntn Corp | Rotation detector and bearing provided with rotation detector |
JP2012100410A (en) * | 2010-11-01 | 2012-05-24 | Denso Corp | Inverter control device and inverter control system |
US8798906B2 (en) | 2009-07-22 | 2014-08-05 | Ntn Corporation | Vehicle control device and rotation detection device used in same |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60195456A (en) * | 1984-03-16 | 1985-10-03 | Sanyo Denki Kk | Rotating speed detector |
JPS6135361A (en) * | 1984-07-27 | 1986-02-19 | Sanyo Denki Kk | Rotating speed detector |
-
1987
- 1987-07-27 JP JP62187112A patent/JPS6431053A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60195456A (en) * | 1984-03-16 | 1985-10-03 | Sanyo Denki Kk | Rotating speed detector |
JPS6135361A (en) * | 1984-07-27 | 1986-02-19 | Sanyo Denki Kk | Rotating speed detector |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0336957U (en) * | 1989-08-22 | 1991-04-10 | ||
JP2011027448A (en) * | 2009-07-22 | 2011-02-10 | Ntn Corp | Rotation detector and bearing provided with rotation detector |
US8798906B2 (en) | 2009-07-22 | 2014-08-05 | Ntn Corporation | Vehicle control device and rotation detection device used in same |
JP2012100410A (en) * | 2010-11-01 | 2012-05-24 | Denso Corp | Inverter control device and inverter control system |
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