JPH0466699U - - Google Patents
Info
- Publication number
- JPH0466699U JPH0466699U JP10674890U JP10674890U JPH0466699U JP H0466699 U JPH0466699 U JP H0466699U JP 10674890 U JP10674890 U JP 10674890U JP 10674890 U JP10674890 U JP 10674890U JP H0466699 U JPH0466699 U JP H0466699U
- Authority
- JP
- Japan
- Prior art keywords
- vehicle
- vehicle speed
- receiving element
- light receiving
- light
- 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
- 230000010365 information processing Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Optical Radar Systems And Details Thereof (AREA)
Description
第１図は本考案の一実施例に係る自動車の後方
追突警報装置のブロツク図、第２図はタイマによ
るレーザダイオードの制御フローチヤート、第３
図はレーザレーダヘツドの内部構成図である。
１……レーザレーダヘツド、３……送光部、５
ａ，５ｂ，５ｃ……レーザダイオード、９……受
光部、１５ａ，１５ｂ……ＰＩＮフオトダイオー
ド、１９……レーザダイオード駆動回路、２１…
…増幅器、２３……車速センサ、２５……情報処
理装置、３１……タイマ。
FIG. 1 is a block diagram of a rear-end collision warning system for a vehicle according to an embodiment of the present invention, FIG. 2 is a flowchart for controlling a laser diode using a timer, and FIG.
The figure is an internal configuration diagram of a laser radar head. 1... Laser radar head, 3... Light transmitting section, 5
a, 5b, 5c... Laser diode, 9... Light receiving section, 15a, 15b... PIN photodiode, 19... Laser diode drive circuit, 21...
...Amplifier, 23...Vehicle speed sensor, 25...Information processing device, 31...Timer.
Claims (1)
光素子から後方車両にレーザビームを照射し、受
光素子でその反射光を検知することにより後方車
両との車間距離を測定するレーザレーダ部と、自
車速度を検出する車速センサと、これらの情報を
基に警報の必要性を判定する情報処理回路とから
なる自動車の後方追突警報装置に於て、上記車速
センサからの車速が設定車速以上のとき、上記受
光素子を駆動させる発光素子駆動回路の駆動信号
の発生周期を長くするタイマ手段を設けると共に
、受光素子に後方車両から反射したレーザビーム
の反射光を検出したとき、上記タイマ手段による
制御を解除するようにしたことを特徴とする自動
車の後方追突警報装置。 A laser radar unit measures the distance between the vehicle and the vehicle behind by emitting a laser beam from the light emitting element of the laser radar head placed at the rear of the vehicle to the vehicle behind, and detecting the reflected light with a light receiving element, and the vehicle speed. In a rear-end collision warning system for automobiles, which is composed of a vehicle speed sensor that detects the vehicle speed and an information processing circuit that determines the necessity of warning based on this information, when the vehicle speed from the vehicle speed sensor is equal to or higher than the set vehicle speed, A timer means is provided to lengthen the generation period of a drive signal of a light emitting element drive circuit that drives the light receiving element, and when the light receiving element detects reflected light of a laser beam reflected from a rear vehicle, control by the timer means is released. A rear-end collision warning device for an automobile, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10674890U JPH0466699U (en) | 1990-10-11 | 1990-10-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10674890U JPH0466699U (en) | 1990-10-11 | 1990-10-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0466699U true JPH0466699U (en) | 1992-06-12 |
Family
ID=31852962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10674890U Pending JPH0466699U (en) | 1990-10-11 | 1990-10-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0466699U (en) |
-
1990
- 1990-10-11 JP JP10674890U patent/JPH0466699U/ja active Pending
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