| 摘要 |
<p>PURPOSE:To prevent the traffic accident by calculating the time estimating rear-end collisions based on the specific formula and issuing an alarm based on the time estimating rear-end collisions. CONSTITUTION:The alarm for rear-end collisions issuing an alarm through the calculation based on the distance from the car ahead and the traveling speed calculates the time estimating rear-end collisions and issues an alarm based on the time estimating rear-end collisions. In the formula, Ta is the time estimating rear-end collisions, X the distance between cars (m), Vm the car speed (m/s), Tk the idle time, Vr the relative velocity (m/s), G the acceleration of the relative velocity, and alpha the constant related to the state of the car. Brake control signals and accelerator open signals are inputted to the alarm for rear- end collisions. With this signal input, the constant value to calculate the time estimating rear-end collisions is changed.</p> |
