JPS623071U - - Google Patents
Info
- Publication number
- JPS623071U JPS623071U JP9367685U JP9367685U JPS623071U JP S623071 U JPS623071 U JP S623071U JP 9367685 U JP9367685 U JP 9367685U JP 9367685 U JP9367685 U JP 9367685U JP S623071 U JPS623071 U JP S623071U
- Authority
- JP
- Japan
- Prior art keywords
- vehicle speed
- detection device
- reed switch
- stored
- certain value
- 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
- 235000014676 Phragmites communis Nutrition 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
Description
第１図は本考案の一実施例に係わる車速検出装
置を示す回路図、第２図は動作を説明するための
フローチヤートである。
１０……車速センサ、１１……磁石、１２……
リードスイツチ、１４……コンパレータ、１５…
…ＳＲ型フリツプフロツプ、１６……マイクロコ
ンピユータ。
FIG. 1 is a circuit diagram showing a vehicle speed detection device according to an embodiment of the present invention, and FIG. 2 is a flowchart for explaining the operation. 10... Vehicle speed sensor, 11... Magnet, 12...
Reed switch, 14... Comparator, 15...
...SR type flip-flop, 16...microcomputer.
Claims (1)
に応じて開成、閉成が繰り返されるリードスイツ
チと、このリードスイツチから得られるパルスの
周期を計測して車速を算出して記憶するようにし
ている車速検出装置において、車速が一定値以下
になると算出された車速を記憶しないで、その後
車速が一定値より大きくなつて所定時間経過する
と算出された車速を記憶するようにしたことを特
徴とする車速検出装置。 A magnet rotates according to the vehicle speed, a reed switch opens and closes repeatedly according to the rotation of the magnet, and the period of the pulse obtained from this reed switch is measured to calculate and store the vehicle speed. The vehicle speed detection device according to the present invention is characterized in that the calculated vehicle speed is not stored when the vehicle speed becomes less than a certain value, but the calculated vehicle speed is stored when the vehicle speed becomes larger than the certain value and a predetermined period of time has elapsed. Vehicle speed detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9367685U JPS623071U (en) | 1985-06-20 | 1985-06-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9367685U JPS623071U (en) | 1985-06-20 | 1985-06-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS623071U true JPS623071U (en) | 1987-01-09 |
Family
ID=30651567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9367685U Pending JPS623071U (en) | 1985-06-20 | 1985-06-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS623071U (en) |
-
1985
- 1985-06-20 JP JP9367685U patent/JPS623071U/ja active Pending
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