JPS552914A - Car-speed detector - Google Patents
Car-speed detectorInfo
- Publication number
- JPS552914A JPS552914A JP7534478A JP7534478A JPS552914A JP S552914 A JPS552914 A JP S552914A JP 7534478 A JP7534478 A JP 7534478A JP 7534478 A JP7534478 A JP 7534478A JP S552914 A JPS552914 A JP S552914A
- Authority
- JP
- Japan
- Prior art keywords
- pulse
- car
- speed
- counter
- pulses
- 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 minimize low-speed and high-speed errors and reduce detection time, by counting the time of interval of one pulse from a car-speed sensor on the low- speed side, and increasing the number of pulses from the car-speed sensor, which is to be counted, as the speed increases.
CONSTITUTION: When a pulse from a car-speed sensor enters reference pulse counter 3, the counter, by the instruction from counter control 4, starts counting pulses from reference pulse generator 2. When the next pulse enters car-speed sensor pulse counter 1, counter control 4 counts some pulse intervals and issues an instruction to reference pulse counter 3, which counts reference pulses until the pulses from the car-speed sensor reaches a certain number. Since the number of measured pulse intervals varies with the car speed, the number of pulses counted by reference pulse counter 3 is processed by multiplier 5 as if it were counted for vertual 8 pulse intervals for alignment.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7534478A JPS552914A (en) | 1978-06-23 | 1978-06-23 | Car-speed detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7534478A JPS552914A (en) | 1978-06-23 | 1978-06-23 | Car-speed detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS552914A true JPS552914A (en) | 1980-01-10 |
Family
ID=13573533
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7534478A Pending JPS552914A (en) | 1978-06-23 | 1978-06-23 | Car-speed detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS552914A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57204457A (en) * | 1981-06-12 | 1982-12-15 | Toshiba Corp | Revolving speed detecting device |
JPS61270662A (en) * | 1985-05-24 | 1986-11-29 | Pioneer Electronic Corp | Detecting device for rotating speed |
-
1978
- 1978-06-23 JP JP7534478A patent/JPS552914A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57204457A (en) * | 1981-06-12 | 1982-12-15 | Toshiba Corp | Revolving speed detecting device |
JPS61270662A (en) * | 1985-05-24 | 1986-11-29 | Pioneer Electronic Corp | Detecting device for rotating speed |
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