| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a road surface determination device for vehicle with a simple structure capable of determining a road surface condition at an early stage and a drive support device. <P>SOLUTION: A feature quantity of travelling sound is previously learnt for each road surface condition. A travelling sound of a vehicle is collected, the feature quantity is extracted from the collected travelling sound, a road surface condition corresponding to the feature quantity of the travelling sound extracted on the basis of the learning data (for example, a road surface condition of low friction coefficient, or whether the wheels of the own vehicle are on the compartment line of a traffic lane) is determined, and drive support is provided in response to the determined road surface condition. By using a beam forming, a travelling sound of each of the wheels of the own vehicle or a travelling sound of other vehicle around the own vehicle can be acquired so as to determine a road surface condition for each of the wheels of the own vehicle or for the other vehicle around the own vehicle. <P>COPYRIGHT: (C)2013,JPO&INPIT |
