JPS6437700A - Rear-end collision forecasting device - Google Patents
Rear-end collision forecasting deviceInfo
- Publication number
- JPS6437700A JPS6437700A JP19500787A JP19500787A JPS6437700A JP S6437700 A JPS6437700 A JP S6437700A JP 19500787 A JP19500787 A JP 19500787A JP 19500787 A JP19500787 A JP 19500787A JP S6437700 A JPS6437700 A JP S6437700A
- Authority
- JP
- Japan
- Prior art keywords
- car
- speed
- distance
- relative speed
- end collision
- 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
- 238000000034 method Methods 0.000 abstract 2
- 238000001514 detection method Methods 0.000 abstract 1
- 230000007257 malfunction Effects 0.000 abstract 1
Landscapes
- Traffic Control Systems (AREA)
Abstract
PURPOSE:To prevent a rear-end collision forecasting device from generating malfunction by accurately executing distance detection for calculating a relative speed by a triangular range finding method considering also the angle of a picture. CONSTITUTION:Electromagnetic wave beams 12 are radiated from one's own car 10 to a forward card 13 and a distance up to the car 13 is found out from the difference of angles of reflected waves by using the triangular range finding method. Time required for approaching the distance to a previously determined remote distance (a remote prescribed position) is counted. The relative speed between one's own car 10 and the forward car 13 at that time is calculated, and when the relation between the relative speed and the speed of the car satisfies the speed of the car >= relative speed and the speed of the car >=a set speed, a rear-end collision forecasting alarm is outputted. When the forward car 13 is located on a previously determined relatively remote distance, no output is generated from a near distance sensor B, so that a collision forecasting alarm is not generated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19500787A JPS6437700A (en) | 1987-08-03 | 1987-08-03 | Rear-end collision forecasting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19500787A JPS6437700A (en) | 1987-08-03 | 1987-08-03 | Rear-end collision forecasting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6437700A true JPS6437700A (en) | 1989-02-08 |
Family
ID=16333982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19500787A Pending JPS6437700A (en) | 1987-08-03 | 1987-08-03 | Rear-end collision forecasting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6437700A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5119901A (en) * | 1991-02-19 | 1992-06-09 | Buie Dewayne T | Vehicle air bag protection system |
| JP2004535031A (en) * | 2001-07-11 | 2004-11-18 | ローベルト ボッシュ ゲゼルシャフト ミット ベシュレンクテル ハフツング | Automatic actuation method and device for vehicle deceleration |
| CN109584633A (en) * | 2018-12-17 | 2019-04-05 | 安徽江淮汽车集团股份有限公司 | A kind of vehicle collision prewarning Scene realization system and method based on V2X technology |
-
1987
- 1987-08-03 JP JP19500787A patent/JPS6437700A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5119901A (en) * | 1991-02-19 | 1992-06-09 | Buie Dewayne T | Vehicle air bag protection system |
| JP2004535031A (en) * | 2001-07-11 | 2004-11-18 | ローベルト ボッシュ ゲゼルシャフト ミット ベシュレンクテル ハフツング | Automatic actuation method and device for vehicle deceleration |
| CN109584633A (en) * | 2018-12-17 | 2019-04-05 | 安徽江淮汽车集团股份有限公司 | A kind of vehicle collision prewarning Scene realization system and method based on V2X technology |
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