| 摘要 |
PURPOSE:To prevent a brake from being operated at an unexpected timing efficiently while a vehicle driver attempts to prevent rear-end collision by means of steering operation in a rear-end collision prevention device for a vehicle provided with an automatic brake device. CONSTITUTION:Detection signals from a vehicle speed sensor 10, an acceleration sensor 12, a distance measuring sensor 14, a doppler sensor 16 are supplied to an ECU 18. The EUC 18 computes the first inter-vehicle distance XB which permits rear-end collision to be prevent by braking and the second inter-vehicle distance XS which permits rear-end collision to be prevented by means of steering operation based on vehicle speed, relative speed, and an inter vehicle distance. When the detected inter-vehicle distance DELTAx is more than the second inter-vehicle distance XS even if it is less than the first inter-vehicle distance XB, rear-end collision is prevented by means of a driver's steering operation without operating an automatic brake device 22. The automatic brake device 22 is operated for the first time only when the inter-vehicle distance DELTAx is less than XB, XS, so it is possible to inhibit the automatic brake device 22 from being operated at an unexpected timing.
|
