| 摘要 |
<p>PURPOSE:To improve the precision of decision making on the degree of danger of a vehicle and to make the vehicle travel safer by considering not only the relation between the vehicle and a 1st object in front of the vehicle, but also the relation between the vehicle and a 2nd object in front of the vehicle when the degree of danger of the vehicle is to be decided. CONSTITUTION:A distance sensor 1 measures the distance from its own vehicle to a 1st vehicle and the distance from its own vehicle to a 2nd vehicle at predetermined intervals of time and outputs 1st distance information 101 and 2nd distance information 102. A relative speed calculation part 3 calculates the 1st relative speed 103 between this vehicle and the 1st vehicle from 1st distance information (111) as a last measurement result, the 1st distance information 101 as the current measurement result, and the measurement time interval. Further, the 2nd relative speed 104 between the 1st vehicle and 2nd vehicle is calculated from the 1st distance information 111, 2nd distance information (112), 1s distance information 101, 2nd distance information 102, and the measurement time interval. A danger degree decision part 4 decides the degree of danger between its own vehicle and the 1st vehicle and outputs an alarm generation signal 106.</p> |
