Vehicle Impact Damage Minimizer
Publication Date: 2015-Apr-23
The IP.com Prior Art Database
Disclosed is a system that, in the event of a collision between vehicles, reduces the force of impact from an approaching vehicle by briefly disengaging the brakes of a standing vehicle to allow a longer time of collision between the two vehicles. Lengthening the time of collision reduces instantaneous forces experienced by the passengers and vehicles, reducing injury and damage risk.
Page 01 of 3
Vehicle Impact Damage Minimizer
In any collision, the risk of injury and property damage is positively correlated to the impact force of the vehicles involved. It is therefore beneficial to minimize impact force, reducing injury and damage risk. Impact force is modeled by the following equation:
F = m * dv/dt, where F is the impact force experienced, v is the velocity and t is the time of collision.
Regarding impact force, in a rear-end collision, the only scenario worse than that of a stationary vehicle with brakes engaged is a scenario in which the lead vehicle reverses into the approaching vehicle. There are automated methods for an approaching vehicle to reduce impact force by detecting an impending collision and reducing approaching vehicle speed or alerting the driver so that said driver can manually reduce the speed of the approaching vehicle. Impact force may be further reduced, as herein disclosed, by automating a stationary vehicle to reduce impact force from the approaching vehicle.
The system disclosed herein reduces impact force from the approaching vehicle by briefly disengaging the brakes to allow for a longer time of collision between the two vehicles. Lengthening the time of collision reduces instantaneous forces experienced by the passengers and vehicles, reducing injury and damage risk.
As shown by the equation, increasing the time of collision between the vehicles proportionally decreases the impact force. The disclosed system maximizes the time of collision within the bounds of maintaining a safe environment for the collision. This maximization of the time of collision is achieved through the temporary and controlled disengagement of the brakes, allowing the stationary vehicle to move forward during the collision. This forward movement lengthens the time of collision, thereby reducing the instantaneous and average force of impact experienced by the vehicles.
The disclosed system includes the following components:
• Vehicles involved
• Antilock brake system (ABS) of the stationary vehicle • Instantaneous force of impact sensor on the stationary vehicle • On-board computer of the stationary vehicle
• Maximal forward motion calculation system
Prior to the collision, the stationary vehicle has the brakes engaged. As the approaching vehicle begins to collide with the stationary vehicle, the instantaneous force of impact sensor begins to register a positive impact force. Once the instantaneous force of impact exceeds a predetermined threshold, the on-board computer of the stationary vehicle sends a signal to the ABS unit to disengage the brakes. This disengagement of the brakes lasts for a very brief period and the brakes are re-engaged once the instantaneous force of impact falls below the predetermined threshold. This cyclic engagemen...