Method for determining a state of a road during the driving mode of a motor vehicle
    3.
    发明授权
    Method for determining a state of a road during the driving mode of a motor vehicle 有权
    用于在机动车辆的驾驶模式期间确定道路的状态的方法

    公开(公告)号:US06954146B2

    公开(公告)日:2005-10-11

    申请号:US10738135

    申请日:2003-12-18

    摘要: In a method for determining the state of a road during driving of a motor vehicle, the sound which is generated when a vehicle tire rolls on an underlying surface is sensed. A frequency signal is determined by means of a sound level signal which describes the sound, and is divided into at least two sub-zones by means of at least one limiting frequency. The sub-zones are each assigned to an associated frequency band, and an intensity value is determined for each of at least two frequency bands from the assigned sub-zone of the frequency signal. The intensity value is characteristic of the sound intensity which is present in a frequency band. An intensity ratio is formed from two intensity values by dividing the first intensity value of the first frequency band by the second intensity value of the second frequency band, and is used to determine the state of a road.

    摘要翻译: 在车辆驾驶期间确定道路状态的方法中,检测到车辆轮胎在下面的表面滚动时产生的声音。 频率信号通过描述声音的声级信号来确定,并且通过至少一个限制频率被分成至少两个子区域。 子区域被分配给相关联的频带,并且从频率信号的所分配的子区域为至少两个频带中的每一个确定强度值。 强度值是存在于频带中的声音强度的特征。 通过将第一频带的第一强度值除以第二频带的第二强度值,由两个强度值形成强度比,并且用于确定道路的状态。