Vehicle safe driving promotion system
First Claim
1. A vehicle safe driving promotion system, comprising:
- a distance sensor that detects a target distance from a vehicle to a target in front of the vehicle;
a vehicle speed sensor that detects a vehicle speed; and
a programmable controller programmed to;
calculate a stopping distance of the vehicle from the vehicle speed;
calculate a collision possibility index corresponding to a ratio between the target distance and the stopping distance;
calculate a kinetic energy of the vehicle immediately before a collision with the target from the vehicle speed and the target distance, and a reaction time of a driver; and
provide the driver with information indicating a danger of a collision based on the collision possibility index and a collision damage based on the kinetic energy of the vehicle immediately before the collision.
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Accused Products
Abstract
A distance sensor detects a target distance from a vehicle to a target in front of the vehicle, and a vehicle speed sensor detects a vehicle speed. A controller calculates a stopping distance of the vehicle from the vehicle speed. The controller calculates a collision possibility index from the target distance and the stopping distance, and calculates a kinetic energy of the vehicle immediately before a collision with the target from the vehicle speed and the target distance. The controller warns a driver of the vehicle of the possibility of a collision and the scale of damage to be caused by the collision on the basis of the collision possibility index and the kinetic energy of the vehicle immediately before the collision. As a result, the driver is provided with information promoting safe driving which appeals to the driver forcefully.
9 Citations
8 Claims
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1. A vehicle safe driving promotion system, comprising:
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a distance sensor that detects a target distance from a vehicle to a target in front of the vehicle; a vehicle speed sensor that detects a vehicle speed; and a programmable controller programmed to; calculate a stopping distance of the vehicle from the vehicle speed; calculate a collision possibility index corresponding to a ratio between the target distance and the stopping distance; calculate a kinetic energy of the vehicle immediately before a collision with the target from the vehicle speed and the target distance, and a reaction time of a driver; and provide the driver with information indicating a danger of a collision based on the collision possibility index and a collision damage based on the kinetic energy of the vehicle immediately before the collision. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A vehicle safe driving promotion system, comprising:
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a distance sensor that detects a target distance from a vehicle to a target in front of the vehicle; a vehicle speed sensor that detects a vehicle speed; and a programmable controller programmed to; calculate a stopping distance of the vehicle from the vehicle speed; calculate a collision possibility index corresponding to a ratio between the target distance and the stopping distance; calculate a kinetic energy of the vehicle immediately before a collision with the target from the vehicle speed and the target distance; and provide a driver with information indicating a danger of a collision based on the collision possibility index and a collision damage based on the kinetic energy of the vehicle immediately before the collision, wherein the controller is further programmed to calculate the stopping distance of the vehicle using a following Equation (A);
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8. A vehicle safe driving promotion system, comprising:
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a distance sensor that detects a target distance from a vehicle to a target in front of the vehicle; a vehicle speed sensor that detects a vehicle speed; and a programmable controller programmed to; calculate a stopping distance of the vehicle from the vehicle speed; calculate a collision possibility index corresponding to a ratio between the target distance and the stopping distance; calculate a kinetic energy of the vehicle immediately before a collision with the target from the vehicle speed and the target distance; and provide a driver with information indicating a danger of a collision based on the collision possibility index and a collision damage based on the kinetic energy of the vehicle immediately before the collision, wherein the controller is further programmed to calculate the kinetic energy of the vehicle immediately before the collision using following Equations (B) and (C);
Vc=√
{square root over (−
2·
μ
·
g(Dhw−
Vf·
Tr)+Vf2)}
(B)where Vc is the vehicle speed immediately before the collision, Dhw is the target distance, Tr is a reaction time of the driver of the vehicle, Vf is the vehicle speed, and μ
is a frictional coefficient between a tire and a road surface;
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Specification