公开(公告)号：US20100060443A1

公开(公告)日：2010-03-11

申请号：US12519067

申请日：2007-11-21

申请人： Yasumichi Wakao ,  Yasushi Hanatsuka

发明人： Yasumichi Wakao ,  Yasushi Hanatsuka

IPC分类号： B60C23/00 ,  G01P21/00 ,  B60C23/02 ,  B60C11/24

CPC分类号： B60C11/246 ,  B60C99/006 ,  Y10T152/10027

摘要： A vehicle velocity detector 15 is provided, velocity V is detected from position data of the vehicle calculated by using signal from satellites, which is received by a GPS receiver 11 installed to a vehicle body, wheel rotation velocity Vw0 detected by a wheel velocity sensor 12 is corrected in accordance with tire inner pressure detected by a pressure sensor 13 so as to obtain wheel rotation velocity (correction value) Vw, velocity ratio R=(Vw/V), which is ratio of the corrected wheel rotation velocity Vw and the detected wheel velocity V, is calculated and tire wear amount is estimated in accordance with velocity ratio R so that tire wear amount can be measured precisely without processing the tire tread portion.

摘要翻译： 提供车速检测器15，通过使用由安装在车身上的GPS接收器11接收到的来自卫星的信号计算出的车辆的位置数据来检测速度V，由车轮速度传感器12检测出的车轮转速Vw0 根据由压力传感器13检测的轮胎内压校正，以获得车轮旋转速度（校正值）Vw，速度比R =（Vw / V），速度比R =（Vw / V），其是校正的车轮旋转速度Vw和检测到的轮转速度Vw 计算轮速V，并根据速度比R估计轮胎磨损量，从而可以在不处理轮胎胎面部的情况下精确地测量轮胎磨损量。

公开(公告)号：US08493200B2

公开(公告)日：2013-07-23

申请号：US12519067

申请日：2007-11-21

申请人： Yasumichi Wakao ,  Yasushi Hanatsuka

发明人： Yasumichi Wakao ,  Yasushi Hanatsuka

IPC分类号： B60C23/00

CPC分类号： B60C11/246 ,  B60C99/006 ,  Y10T152/10027

摘要： A vehicle velocity detector 15 is provided, velocity V is detected from position data of the vehicle calculated by using signal from satellites, which is received by a GPS receiver 11 installed to a vehicle body, wheel rotation velocity Vw0 detected by a wheel velocity sensor 12 is corrected in accordance with tire inner pressure detected by a pressure sensor 13 so as to obtain wheel rotation velocity (correction value) Vw, velocity ratio R=(Vw/V), which is ratio of the corrected wheel rotation velocity Vw and the detected wheel velocity V, is calculated and tire wear amount is estimated in accordance with velocity ratio R so that tire wear amount can be measured precisely without processing the tire tread portion.

摘要翻译： 提供车速检测器15，通过使用由安装在车身上的GPS接收器11接收到的来自卫星的信号计算出的车辆的位置数据来检测速度V，由车轮速度传感器12检测出的车轮转速Vw0 根据由压力传感器13检测的轮胎内压校正，以获得车轮旋转速度（校正值）Vw，速度比R =（Vw / V），速度比R =（Vw / V），其是校正的车轮旋转速度Vw和检测到的轮转速度Vw 计算轮速V，并根据速度比R估计轮胎磨损量，从而可以在不处理轮胎胎面部的情况下精确地测量轮胎磨损量。

公开(公告)号：US20130116972A1

公开(公告)日：2013-05-09

申请号：US13698228

申请日：2011-01-13

申请人： Yasushi Hanatsuka ,  Yasumichi Wakao ,  Hiroshi Morinaga

发明人： Yasushi Hanatsuka ,  Yasumichi Wakao ,  Hiroshi Morinaga

IPC分类号： G01B17/08

CPC分类号： G01B17/08 ,  B60T8/172 ,  B60T2210/12 ,  B60T2210/13 ,  B60W40/06 ,  B60W40/068

摘要： A method capable of estimating a snowy road surface condition during vehicular travel in finer classification. In this method, tire vibrations in the circumferential direction, road surface temperature (T), and tire-generated sound are detected by an acceleration sensor, a road surface thermometer, and a microphone, respectively. Then band values P11, P12 and P13 for a pre-leading-edge region (R1), band values P21, P22 and P23 for a leading-edge region (R2), band values P31, P32 and P33 for a pre-trailing-edge region (R3), band values P41 and P42 for a trailing-edge region (R4), and band values P51, P52 and P53 for a post-trailing-edge region (R5) are calculated from the tire vibration data. A sound pressure level ratio (Q)=(PA/PB), which is the ratio of a band power value (PA) of a low frequency band to a band power value (PB) of a high frequency band, is calculated from data on the tire-generated sound. And a road surface condition is estimated, using the band values (Pij), road surface temperature data (T), sound pressure level ratio (Q), and wheel speed data.

摘要翻译： 一种能够在更精细的分类中估计车辆行驶中的雪路面状况的方法。 在该方法中，通过加速度传感器，路面温度计和麦克风分别检测圆周方向的轮胎振动，路面温度（T）和轮胎产生的声音。 然后，对于前导区域（R1）的前导区域（R1）的带值P11，P12和P13，前导区域（R2）的频带值P21，P22和P23，用于前导区域的频带值P31，P32和P33， 边缘区域（R3），用于后缘区域（R4）的波段值P41和P42以及用于后沿边缘区域（R5）的波段值P51，P52和P53从轮胎振动数据计算。 根据数据计算声压级比（Q）=（PA / PB），其是低频带的频带功率值（PA）与高频带的频带功率值（PB）的比率 对轮胎产生的声音。 并且使用带值（Pij），路面温度数据（T），声压级比（Q）和车轮速度数据来估计路面状况。

公开(公告)号：US09170102B2

公开(公告)日：2015-10-27

申请号：US13698228

申请日：2011-01-13

申请人： Yasushi Hanatsuka ,  Yasumichi Wakao ,  Hiroshi Morinaga

发明人： Yasushi Hanatsuka ,  Yasumichi Wakao ,  Hiroshi Morinaga

IPC分类号： G06F19/00 ,  G01B17/08 ,  B60T8/172 ,  B60W40/06 ,  B60W40/068

CPC分类号： G01B17/08 ,  B60T8/172 ,  B60T2210/12 ,  B60T2210/13 ,  B60W40/06 ,  B60W40/068

摘要： A method capable of estimating a snowy road surface condition during vehicular travel in finer classification. In this method, tire vibrations in the circumferential direction, road surface temperature (T), and tire-generated sound are detected by an acceleration sensor, a road surface thermometer, and a microphone, respectively. Then band values P11, P12 and P13 for a pre-leading-edge region (R1), band values P21, P22 and P23 for a leading-edge region (R2), band values P31, P32 and P33 for a pre-trailing-edge region (R3), band values P41 and P42 for a trailing-edge region (R4), and band values P51, P52 and P53 for a post-trailing-edge region (R5) are calculated from the tire vibration data. A sound pressure level ratio (Q)=(PA/PB), which is the ratio of a band power value (PA) of a low frequency band to a band power value (PB) of a high frequency band, is calculated from data on the tire-generated sound. And a road surface condition is estimated, using the band values (Pij), road surface temperature data (T), sound pressure level ratio (Q), and wheel speed data.

摘要翻译： 一种能够在更精细的分类中估计车辆行驶中的雪路面状况的方法。 在该方法中，通过加速度传感器，路面温度计和麦克风分别检测圆周方向的轮胎振动，路面温度（T）和轮胎产生的声音。 然后，对于前导区域（R1）的前导区域（R1）的带值P11，P12和P13，前导区域（R2）的频带值P21，P22和P23，用于前导区域的频带值P31，P32和P33， 边缘区域（R3），用于后缘区域（R4）的波段值P41和P42以及用于后沿边缘区域（R5）的波段值P51，P52和P53从轮胎振动数据计算。 根据数据计算声压级比（Q）=（PA / PB），其是低频带的频带功率值（PA）与高频带的频带功率值（PB）的比率 对轮胎产生的声音。 并且使用带值（Pij），路面温度数据（T），声压级比（Q）和车轮速度数据来估计路面状况。

公开(公告)号：US20100199756A1

公开(公告)日：2010-08-12

申请号：US12668314

申请日：2008-07-03

申请人： Yasushi Hanatsuka

发明人： Yasushi Hanatsuka

IPC分类号： G01M17/02

CPC分类号： B60C11/24 ,  B60C11/243 ,  B60C11/246 ,  G01M17/02

摘要： A method and apparatus for detecting the state of wear of the tire tread with accuracy and durability are provided. Acceleration of the inner surface of the tire tread is detected by an acceleration sensor installed in an inner liner region of the tire. From a thus detected time-series waveform of acceleration, an acceleration waveform in the leading edge region including a leading peak which occurs when the block engages with the road surface or an acceleration waveform in the trailing edge region including a trailing peak which occurs when the block disengages from the road surface is extracted. A frequency band value Pf is calculated which is the magnitude of acceleration in a predetermined frequency region of a frequency spectrum obtained through a frequency analysis of the extracted acceleration waveform. And the degree of tire wear is determined by comparing the frequency band value Pf with a preset threshold K(v).

摘要翻译： 提供了一种用于以准确性和耐久性检测轮胎胎面的磨损状态的方法和装置。 通过安装在轮胎的内衬区域中的加速度传感器来检测轮胎胎面的内表面的加速度。 根据这样检测到的加速度时间序列波形，包括当块与路面接合时发生的前导区域的前缘区域中的加速度波形或包括在后沿区域中的加速度波形，包括当 提取与路面脱离的块。 计算频带值Pf，其是通过所提取的加速度波形的频率分析获得的频谱的预定频率区域中的加速度的大小。 并且通过将频带值Pf与预设阈值K（v）进行比较来确定轮胎磨损程度。

公开(公告)号：US09046457B2

公开(公告)日：2015-06-02

申请号：US11917852

申请日：2006-06-19

申请人： Yasushi Hanatsuka ,  Hiroshi Morinaga

发明人： Yasushi Hanatsuka ,  Hiroshi Morinaga

IPC分类号： B60T8/00 ,  G01N19/02 ,  B60G17/0165 ,  B60T8/172 ,  B60W40/06

CPC分类号： G01N19/02 ,  B60G17/0165 ,  B60G2204/113 ,  B60G2400/206 ,  B60G2400/252 ,  B60G2400/821 ,  B60G2600/70 ,  B60G2800/162 ,  B60G2800/702 ,  B60G2800/916 ,  B60T8/1725 ,  B60T2210/12 ,  B60W40/06 ,  B60W2422/70 ,  B60W2550/147

摘要： The vibration of a tire 10 of a running vehicle in the circumferential direction or the width direction is detected by a road surface condition estimating tire 10, provided with an acceleration sensor 11 and a signal processing unit 12. Data of a detected vibration waveform are divided into data of three domains, namely, a pre-leading domain, a contact patch domain, and a post-trailing domain, and then the vibration levels in the pre-leading domain and the contact patch domain, respectively, are extracted. At the same time, a vibration component in a low-frequency band and a vibration component in a high-frequency band are extracted respectively from the vibration levels in the respective domains, and respective vibration level ratios R, which are each a ratio thereof, are calculated. Then, on the vehicle body side, the condition of a road surface on which the vehicle is running is estimated, based on the calculated vibration level ratio R and a map 32M, stored in a storage means 32, showing a relationship between the vibration level ratio R of tire vibration and road surface conditions. Thus a road surface condition can be estimated with accuracy even when there are changes in temperature or vehicle speed.

摘要翻译： 通过设置有加速度传感器11和信号处理单元12的路面状态估计轮胎10检测行驶车辆在周向或宽度方向上的轮胎10的振动。检测到的振动波形的数据被分割 分为三个领域的数据，即前导域，接触点域和后拖尾域，然后分别提前前导域和接触区域中的振动水平。 同时，从各个区域的振动水平分别提取低频带中的振动分量和高频带中的振动分量，并且各自的振动级别比R各自为比例， 被计算。 然后，在车身侧，基于计算出的振动等级比R和存储在存储装置32中的地图32M来推定车辆行驶的路面的状态，表示振动等级 轮胎振动与路面状况的比值R。 因此，即使存在温度或车速的变化，也能够准确地估计路面状况。

公开(公告)号：US08061191B2

公开(公告)日：2011-11-22

申请号：US12668314

申请日：2008-07-03

申请人： Yasushi Hanatsuka

发明人： Yasushi Hanatsuka

IPC分类号： G01M17/02 ,  B60C11/24

CPC分类号： B60C11/24 ,  B60C11/243 ,  B60C11/246 ,  G01M17/02

摘要： A method and apparatus for detecting the state of wear of the tire tread with accuracy and durability are provided. Acceleration of the inner surface of the tire tread is detected by an acceleration sensor installed in an inner liner region of the tire. From a thus detected time-series waveform of acceleration, an acceleration waveform in the leading edge region including a leading peak which occurs when the block engages with the road surface or an acceleration waveform in the trailing edge region including a trailing peak which occurs when the block disengages from the road surface is extracted. A frequency band value Pf is calculated which is the magnitude of acceleration in a predetermined frequency region of a frequency spectrum obtained through a frequency analysis of the extracted acceleration waveform. And the degree of tire wear is determined by comparing the frequency band value Pf with a preset threshold K(v).

摘要翻译： 提供了一种用于以准确性和耐久性检测轮胎胎面的磨损状态的方法和装置。 通过安装在轮胎的内衬区域中的加速度传感器来检测轮胎胎面的内表面的加速度。 根据这样检测到的加速度时间序列波形，包括当块与路面接合时发生的前导区域的前缘区域中的加速度波形或包括在后沿区域中的加速度波形，包括当 提取与路面脱离的块。 计算频带值Pf，其是通过所提取的加速度波形的频率分析获得的频谱的预定频率区域中的加速度的大小。 并且通过将频带值Pf与预设阈值K（v）进行比较来确定轮胎磨损程度。

公开(公告)号：US20090105921A1

公开(公告)日：2009-04-23

申请号：US11917852

申请日：2006-06-19

申请人： Yasushi Hanatsuka ,  Hiroshi Morinaga

发明人： Yasushi Hanatsuka ,  Hiroshi Morinaga

IPC分类号： B60T8/00

CPC分类号： G01N19/02 ,  B60G17/0165 ,  B60G2204/113 ,  B60G2400/206 ,  B60G2400/252 ,  B60G2400/821 ,  B60G2600/70 ,  B60G2800/162 ,  B60G2800/702 ,  B60G2800/916 ,  B60T8/1725 ,  B60T2210/12 ,  B60W40/06 ,  B60W2422/70 ,  B60W2550/147

摘要： The vibration of a tire 10 of a running vehicle in the circumferential direction or the width direction is detected by a road surface condition estimating tire 10, provided with an acceleration sensor 11 and a signal processing unit 12. Data of a detected vibration waveform are divided into data of three domains, namely, a pre-leading domain, a contact patch domain, and a post-trailing domain, and then the vibration levels in the pre-leading domain and the contact patch domain, respectively, are extracted. At the same time, a vibration component in a low-frequency band and a vibration component in a high-frequency band are extracted respectively from the vibration levels in the respective domains, and respective vibration level ratios R, which are each a ratio thereof, are calculated. Then, on the vehicle body side, the condition of a road surface on which the vehicle is running is estimated, based on the calculated vibration level ratio R and a map 32M, stored in a storage means 32, showing a relationship between the vibration level ratio R of tire vibration and road surface conditions. Thus a road surface condition can be estimated with accuracy even when there are changes in temperature or vehicle speed.

摘要翻译： 通过设置有加速度传感器11和信号处理单元12的路面状态估计轮胎10检测行驶车辆在周向或宽度方向上的轮胎10的振动。检测到的振动波形的数据被分割 分为三个领域的数据，即前导域，接触点域和后拖尾域，然后分别提前前导域和接触区域中的振动水平。 同时，从各个区域的振动水平分别提取低频带中的振动分量和高频带中的振动分量，并且各自的振动级别比R各自为比例， 被计算。 然后，在车身侧，基于计算出的振动等级比R和存储在存储装置32中的地图32M来推定车辆行驶的路面的状态，表示振动等级 轮胎振动与路面状况的比值R。 因此，即使存在温度或车速的变化，也能够准确地估计路面状况。