Vehicle control system
An initial movement state of a vehicle is specified in which a starting-off or acceleration is enabled by stepping on an accelerator pedal. In the specified initial movement state, a starting-off direction of the vehicle and an obstacle existing in the starting-off direction are specified. In the initial movement state, an incorrect starting-off sign action is detected which a driver of the vehicle indicates in a duration prior to the time when the vehicle practically starts off. When the incorrect starting-off sign action is detected, an incorrect starting-off prevention output is performed.
1. A vehicle control system comprising:
an initial movement state specification section that specifies an initial movement state, in which a speed of a vehicle is zero or minimal and a starting off or accelerating of the vehicle is allowed by stepping on an accelerator pedal;
a starting-off direction specification section that specifies a starting-off direction of the vehicle in the initial movement state;
a starting-off direction obstacle specification section that specifies an obstacle which exists in the starting-off direction of the vehicle;
an incorrect starting-off sign action detection section that detects an incorrect starting-off sign action, which is predetermined as a sign of an incorrect starting-off towards the obstacle among actions of a driver of the vehicle in the initial movement state,
the incorrect starting-off sign action detection section detecting an incorrect starting-off sign driving operation state as the incorrect starting-off sign action,
the incorrect starting-off sign action detection section detecting, as the incorrect starting-off sign action driving operation state, an accelerator pedal mistaken stepping-on state, in which, instead of the brake pedal, the accelerator pedal is mistakenly stepped on; and
an incorrect starting-off prevention output section that performs an incorrect starting-off prevention output for preventing the incorrect starting-off in conjunction with the incorrect starting-off sign action being detected,
wherein
while monitoring a stepping-on amount of the accelerator pedal, the incorrect starting-off sign action detection section specifies a two-step action as the accelerator pedal mistaken stepping-on state,
the two-step action including a first zone and a second zone,
the first zone in which the stepping-on amount is less than a predetermined threshold value in response to a starting-off at a minimal speed,
the second zone in which the stepping-on amount is rapidly increasing from a level of the first zone and exceeding the predetermined threshold value because of mistakenly stepping on the accelerator pedal although intending to perform a sudden braking.
2. The vehicle control system according to claim 1 , wherein
the incorrect starting-off sign action detection section detects, as the incorrect starting-off sign driving operation state, a stepping-on insufficient state or a lapse of memory state of the brake pedal.
3. The vehicle control system according to claim 1 , wherein:
the starting-off direction specification section is a shift position detection section that detects a shift position of the vehicle;
the starting-off direction obstacle specification section comprises
a frontward obstacle detection section that detects an obstacle existing in front of the vehicle,
a backward obstacle detection section that detects an obstacle existing in back of the vehicle, and
a prevention target pattern determination section that determines whether a present determination pattern corresponds to a basic prevention target pattern,
the basic prevention target pattern being defined when the shift position is at a frontward movement position and the obstacle existence direction is frontward and when the shift position is at a backward movement position and the obstacle existence direction is backward, among several determination patterns for preventing an incorrect starting-off designated based on a combination of the shift position and the obstacle existence direction,
the present determination pattern being indicated by a detected state by the shift position and a detected state by each of the frontward obstacle detection section and the backward obstacle detection section; and
the incorrect starting-off prevention output section performs the incorrect starting-off prevention output when it is determined that the present determination pattern corresponds to the basic prevention target pattern.
4. The vehicle control system according to claim 3 , wherein
the incorrect starting-off sign action detection section includes a sight line direction detection section that detects a sight line direction of the driver as an action of the driver; and
the incorrect starting-off sign action detection section detects, when the basic prevention target pattern is effectuated, a driver's not-gazing action as the incorrect starting-off sign action, the driver's not-gazing action in which the detected sight line direction does not accord with a direction in which the obstacle is confirmed.
5. The vehicle control system according to claim 4 , wherein
the incorrect starting-off prevention output section performs the incorrect starting-off prevention output in cases that the basic prevention target pattern is effectuated, the not-gazing action is detected as the incorrect starting-off sign action, and
the vehicle is in a state of not stopping.
6. The vehicle control system according to claim 1 , wherein
the incorrect starting-off prevention output section includes a travel suppression section that suppresses a travel movement of the vehicle.
7. The vehicle control system according to claim 6 , wherein
the vehicle includes an electronic engine control apparatus comprising an accelerator pedal stepping-on position detection section that detects a stepping-on position of the accelerator pedal, and an engine output control section that performs an electronic control of an engine output based on the detected stepping-on position; and
the travel suppression section includes an engine output restriction section that restricts, as compared with a usual case, an engine output according to the stepping-on amount of the accelerator pedal.
8. The vehicle control system according to claim 1 , wherein
the incorrect starting-off prevention output section includes a braking assistance section that performs a braking assistance for the vehicle.
9. The vehicle control system according to claim 8 , wherein
the braking assistance section includes
a stepping-on reaction control section that increases a stepping-on reactive force of the brake pedal at the braking assistance rather than the usual case, and
a braking pressure control section that increases an increasing rate of a braking pressure against a stepping-on amount of the brake pedal.
10. The vehicle control system according to claim 1 , wherein
the incorrect starting-off prevention output section includes an incorrect starting-off danger report section that performs a danger report output of the incorrect starting-off prevention to the driver who indicates the incorrect starting-off sign action using at least one of a sound wave, a light, a vibration, and a smell.
11. The vehicle control system according to claim 10 , wherein
the incorrect starting-off danger report section includes a vibration generation apparatus attached to at least one of a driver seat and the accelerator pedal.