公开(公告)号：US06940399B2

公开(公告)日：2005-09-06

申请号：US10264263

申请日：2002-10-04

申请人： Motonori Tominaga ,  Toshiharu Naito ,  Takeyasu Taguchi ,  Yuichi Inoue ,  Masahiro Yonetani ,  Masaaki Tabata ,  Hideki Ohashi ,  Kazuhiro Kamiya ,  Yukio Mori

发明人： Motonori Tominaga ,  Toshiharu Naito ,  Takeyasu Taguchi ,  Yuichi Inoue ,  Masahiro Yonetani ,  Masaaki Tabata ,  Hideki Ohashi ,  Kazuhiro Kamiya ,  Yukio Mori

IPC分类号： B60C23/06 ,  B60C23/00

CPC分类号： B60C23/061

摘要： A tire air pressure detection device includes an ideal driving status calculating portion (3e) and a rotational status value compensating portion (3f). The ideal driving status calculating portion calculates an ideal status value (βid) corresponding to a slip value under an ideal driving status without tire slippage. The rational status value compensating portion calculates and ideal rotational status value under the ideal driving status without tire slip based on the regression line calculated by a regression line calculating portion (3d) and the ideal slip status value calculated by the ideal driving status calculating portion.

摘要翻译： 轮胎气压检测装置包括理想驾驶状态计算部（3e）和旋转状态值补偿部（3f）。 理想驾驶状态计算部分在没有轮胎滑动的情况下，计算在理想驾驶状态下对应于滑移值的理想状态值（betaid）。 合理状态值补偿部分根据由回归线计算部分（3d）计算的回归线和由理想驾驶状态计算部分计算出的理想滑移状态值，在没有轮胎打滑的理想驾驶状态下计算和理想旋转状态值 。

公开(公告)号：US06768418B2

公开(公告)日：2004-07-27

申请号：US10264282

申请日：2002-10-04

申请人： Motonori Tominaga ,  Toshiharu Naito ,  Takeyasu Taguchi ,  Masaaki Tabata ,  Hideki Ohashi ,  Yukio Mori

发明人： Motonori Tominaga ,  Toshiharu Naito ,  Takeyasu Taguchi ,  Masaaki Tabata ,  Hideki Ohashi ,  Yukio Mori

IPC分类号： B60C2300

CPC分类号： B60C23/061

摘要： A tire air pressure detection device of the present invention includes a warning anticipation timing calculating portion for anticipating a warning timing at which tire air pressure decrease detecting portion will detect the tire air pressure decrease based on rotational status value compensated for by a rotational status value compensating portion. A tire air pressure decrease detecting portion detects a decrease in tire air pressure when a clocked determination time reaches the warning anticipation timing anticipated by the warning anticipation timing calculating portion.

摘要翻译： 本发明的轮胎气压检测装置包括警报预期定时计算部，其用于根据通过旋转状态值补偿补偿的旋转状态值来预测轮胎气压降低检测部将检测到轮胎气压下降的警告时刻 一部分。 轮胎空气压力下降检测部分当时钟确定时间达到警告预期定时计算部分预期的警告预期定时时，检测轮胎空气压力的下降。

公开(公告)号：US07228219B2

公开(公告)日：2007-06-05

申请号：US10489617

申请日：2003-02-12

申请人： Motonori Tominaga ,  Yukio Mori ,  Takeyasu Taguchi

发明人： Motonori Tominaga ,  Yukio Mori ,  Takeyasu Taguchi

IPC分类号： G01C17/38

CPC分类号： B60C23/061 ,  B60T8/172

摘要： A straight running state is accurately determined using only wheel speed data in any running state. Based upon right and left wheel speed values calculated by a wheel speed calculating mechanism (13) from detection values of right and left wheel speed sensors (11, 12), a wheel speed ratio calculating mechanism (21), a distance calculating mechanism (31), and a distance ratio calculating mechanism (32) respectively calculate a right and left wheel speed ratio, an actual running distance, a linear distance, and a distance ratio of the two distances at every preset checkpoint (CP). A wheel speed ratio change amount evaluating mechanism (24) extracts CPs at times where a change amount of the wheel speed ratio is relatively small as effective CPs, and a determining mechanism (43) determines an effective CP with the smallest distance ratio from among the effective CPs as in a straight running state.

摘要翻译： 在任何运行状态下，仅使用车轮速度数据来精确地确定直线运行状态。 根据来自左右车轮速度传感器（11,12）的检测值的车轮速度计算机构（13）计算的左右轮速值，车轮速比计算机构（21），距离计算机构（31） ），并且距离比计算机构（32）分别计算在每个预设检查点（CP）处的两个距离的左右车轮速比，实际行驶距离，线性距离和距离比。 轮速比变化量评估机构（24）在轮速比的变化量相对较小的时候提取CP，并且确定机构（43）确定距离比率最小的有效CP， 有效CP在直线运行状态。

公开(公告)号：US06711508B2

公开(公告)日：2004-03-23

申请号：US09993630

申请日：2001-11-27

申请人： Kazuhiro Kamiya ,  Yukio Mori ,  Takaji Umeno ,  Hideki Ohashi ,  Yuichi Inoue ,  Takeyasu Taguchi

发明人： Kazuhiro Kamiya ,  Yukio Mori ,  Takaji Umeno ,  Hideki Ohashi ,  Yuichi Inoue ,  Takeyasu Taguchi

IPC分类号： G01L700

CPC分类号： B60C23/062 ,  B60C23/061 ,  G01H13/00 ,  G01L17/00 ,  G01N3/405 ,  G01N2203/0676

摘要： The invention provides an apparatus and a method of estimating tire air pressure with high accuracy from vehicle operation at low at high speeds regardless of various elements to be mounted to the vehicle. Estimation of tire air pressure based on a resonance frequency extracted based on a wheel speed signal outputted from a wheel speed sensor corresponding to the respective tire and estimation of tire air pressure based on a dynamic load radius derived based on the wheel speed signal, are used to selectively switch in accordance with a magnitude of a variance value of the resonance frequency at a plurality of time points.

摘要翻译： 本发明提供一种以低速高速从车辆操作以高精度估计轮胎空气压力的装置和方法，而不管要安装到车辆的各种元件如何。 使用基于从对应于各个轮胎的车轮速度传感器输出的车轮速度信号提取的谐振频率和基于基于车轮速度信号导出的动态负载半径的轮胎气压估计的轮胎气压的估计。 根据多个时间点的谐振频率的方差值的大小选择性地切换。

公开(公告)号：US06575023B2

公开(公告)日：2003-06-10

申请号：US09838291

申请日：2001-04-20

申请人： Hideki Ohashi ,  Masahiro Yonetani ,  Yukio Mori ,  Takeyasu Taguchi ,  Yuichi Inoue ,  Takaji Umeno

发明人： Hideki Ohashi ,  Masahiro Yonetani ,  Yukio Mori ,  Takeyasu Taguchi ,  Yuichi Inoue ,  Takaji Umeno

IPC分类号： G01M1702

CPC分类号： B60C23/061

摘要： A variable value (dynamic load radial deviation &bgr;) for making determination of a tire air pressure is calculated from pulse number cumulative values PFL, PFR, PRL and PRR that are cumulated for individual wheels when a predetermined condition is fulfilled. The calculated variable value is stored as a reference variable value, and a speed of a vehicle at the time when the reference variable value is calculated is stored as a reference vehicle speed associated with the reference variable value. If the value is newly calculated, it is determined whether or not a vehicle speed at that moment is within a predetermined vehicle speed range determined by the reference vehicle speed. If it is determined that the vehicle speed is within the predetermined vehicle speed range, it is determined, based on a difference between the newly calculated variable value and the reference variable value associated with the reference vehicle speed, whether or not the tire air pressure is normal. Thus, even if the vehicle is fitted with one or more tires that depend greatly on vehicle speed, the possibility of erroneously determining that a tire air pressure is not normal can be eliminated.

摘要翻译： 当满足预定条件时，根据对各个车轮累积的脉冲数累计值PFL，PFR，PRL和PRR计算用于确定轮胎空气压力的可变值（动态载荷径向偏差β）。 计算的变量值被存储为参考变量值，并且将计算参考可变值时的车辆速度存储为与参考变量值相关联的参考车辆速度。 如果新计算了该值，则确定该时刻的车速是否在基准车速决定的预定车速范围内。 如果确定车速在预定车速范围内，则基于新计算的可变值与与基准车速相关联的参考变量值之间的差来确定轮胎气压是否为 因此，即使车辆配备有一个或多个非常依赖于车辆速度的轮胎，也可以消除错误地确定轮胎气压不正常的可能性。

公开(公告)号：US06385553B1

公开(公告)日：2002-05-07

申请号：US09210960

申请日：1998-12-15

申请人： Toshiharu Naito ,  Nobuyoshi Onogi ,  Takeyasu Taguchi

发明人： Toshiharu Naito ,  Nobuyoshi Onogi ,  Takeyasu Taguchi

IPC分类号： B60C2300

CPC分类号： B60C23/062 ,  B60C23/061

摘要： In a tire air pressure estimating apparatus, wheel speeds of respective wheels are successively calculated when a vehicle is running. At least one of a tire resonance frequency and a tire spring constant is extracted from vibration frequency components included in a wheel speed signal with respect to each of tires. Tire air pressures of drive wheels are estimated based on the extracted tire resonance frequencies or the tire spring constants. Rotational state values (e.g. wheel speed values) of driven wheel tires are calculated based on the detected wheel speeds. Tire air pressures of driven wheels are estimated based on a deviation of the rotational state values of the driven wheel tires.

摘要翻译： 在轮胎气压推定装置中，当车辆行驶时，依次计算各车轮的车轮速度。 轮胎共振频率和轮胎弹簧常数中的至少一个相对于每个轮胎从包括在车轮速度信号中的振动频率分量中提取出来。 基于提取的轮胎共振频率或轮胎弹簧常数来估计驱动轮的轮胎空气压力。 基于检测到的车轮速度来计算从动轮胎的旋转状态值（例如车轮速度值）。 基于从动轮轮胎的旋转状态值的偏差来估计从动轮的轮胎气压。

公开(公告)号：US6092028A

公开(公告)日：2000-07-18

申请号：US131171

申请日：1998-08-07

申请人： Toshiharu Naito ,  Takeyasu Taguchi ,  Hideki Kabune ,  Yuichi Inoue ,  Nobuyoshi Onogi

发明人： Toshiharu Naito ,  Takeyasu Taguchi ,  Hideki Kabune ,  Yuichi Inoue ,  Nobuyoshi Onogi

IPC分类号： B60C23/06 ,  B60C23/00

CPC分类号： B60C23/062 ,  B60C23/061

摘要： A signal processor comprises wheel speed-detecting means for detecting a wheel speed signal including vibrational components of a tire, extraction means for extracting a resonant frequency of the vibrational components of the tire or a tire spring constant based on the wheel speed signals, air pressure-estimating means for estimating a tire air pressure based on the resonant frequency or the tire spring constant, and determining means for determining whether the estimated tire air pressure is abnormal or not by comparing with a determination value. Further, correcting means corrects at least one of the determination value, the estimated tire air pressure, the resonant frequency and the tire spring constant in response to a tire temperature. A temperature-sensing device is mounted inside the signal processor to detect a temperature associated with the tire temperature.

摘要翻译： 信号处理器包括用于检测包括轮胎的振动分量的车轮速度信号的车轮速度检测装置，用于基于车轮速度信号提取轮胎的振动分量的共振频率或轮胎弹簧常数的提取装置，空气压力 - 估计装置，用于基于共振频率或轮胎弹簧常数来估计轮胎气压;以及确定装置，用于通过与确定值进行比较来确定估计的轮胎气压是否异常。 此外，校正装置根据轮胎温度校正判定值，估计轮胎气压，共振频率和轮胎弹簧的至少一个。 温度感测装置安装在信号处理器内以检测与轮胎温度相关的温度。

公开(公告)号：US5606122A

公开(公告)日：1997-02-25

申请号：US525205

申请日：1995-09-08

申请人： Takeyasu Taguchi ,  Toshiharu Naito ,  Nobuyoshi Onogi ,  Ikuo Hayashi ,  Yoshihiro Nishikawa

发明人： Takeyasu Taguchi ,  Toshiharu Naito ,  Nobuyoshi Onogi ,  Ikuo Hayashi ,  Yoshihiro Nishikawa

IPC分类号： B60C23/06 ,  B60C23/00 ,  B60C23/02

CPC分类号： B60C23/062 ,  B60C23/061

摘要： Pickup coils which generate vehicle wheel speed signals which include vibration frequency components of tires during vehicle cruising are provided. An electronic control unit extracts resonance frequencies of tires from the vehicle wheel speed signals and estimates tire pneumatic pressure based on the extracted resonance frequencies. When an estimated vehicle wheel pneumatic pressure falls below a predetermined critical pneumatic pressure, pneumatic pressure decline warnings are generated and displayed by a display unit. An update switch is provided and when this update switch is turned on when replacing tires, the electronic control unit adjusts and sets the value of the critical pneumatic pressure described above based on the resonance frequency extracted during this time.

摘要翻译： 提供了在车辆巡航期间产生包括轮胎的振动频率分量的车轮速度信号的拾取线圈。 电子控制单元从车轮速度信号中提取轮胎的共振频率，并基于提取的共振频率来估计轮胎气动压力。 当估计的车轮气动压力低于预定的临界气压时，由显示单元产生并显示气压下降警告。 提供更新开关，并且当更换轮胎时该更新开关打开时，电子控制单元基于在此期间提取的共振频率来调整并设定上述临界气压的值。

公开(公告)号：US5557552A

公开(公告)日：1996-09-17

申请号：US216536

申请日：1994-03-23

申请人： Toshiharu Naito ,  Masahiko Kamiya ,  Takeyasu Taguchi ,  Kenji Fujiwara

发明人： Toshiharu Naito ,  Masahiko Kamiya ,  Takeyasu Taguchi ,  Kenji Fujiwara

IPC分类号： B60C23/02 ,  B60C11/24 ,  B60C23/06 ,  G01L17/00 ,  G01P3/80 ,  B60Q1/00 ,  E01C23/00

CPC分类号： B60C23/062 ,  B60C11/24 ,  B60C11/246 ,  B60C23/061 ,  G01P3/803

摘要： An absolute vehicle speed determining system is provided. This system includes generally a first sensor for detecting an unsprung vibration frequency component acting on a front wheel and a second sensor for detecting an unsprung vibration frequency component acting on a rear wheel. A phase difference between the unsprung vibration frequency components is found to project an absolute speed of a vehicle based on the phase difference and a wheel base of the vehicle. In addition, a tire condition monitoring system is provided which is designed to monitor properties of the tire, for example, the inflation pressure, the type of tire, or the amount of tire wear using the absolute speed of the vehicle projected.

摘要翻译： 提供绝对车速决定系统。 该系统通常包括用于检测作用在前轮上的簧下振动频率分量的第一传感器和用于检测作用在后轮上的簧下振动频率分量的第二传感器。 发现簧下振动频率分量之间的相位差基于车辆的相位差和车轮底座来投影车辆的绝对速度。 此外，提供轮胎状况监测系统，其被设计为使用所投影的车辆的绝对速度来监测轮胎的性质，例如充气压力，轮胎的类型或轮胎的磨损量。

公开(公告)号：US5553491A

公开(公告)日：1996-09-10

申请号：US168093

申请日：1993-12-17

申请人： Toshiharu Naito ,  Takeyasu Taguchi ,  Masahiko Kamiya ,  Kenji Fujiwara

发明人： Toshiharu Naito ,  Takeyasu Taguchi ,  Masahiko Kamiya ,  Kenji Fujiwara

IPC分类号： B60C23/06 ,  B60C23/02

CPC分类号： B60C23/062 ,  B60C23/061

摘要： It is an object of the present invention to detect a tire air pressure indirectly with high detection precision.A tire air pressure detecting device includes a speed sensor for outputting a signal corresponding to a rotational speed of a tire, and an electronic control unit which inputs the signal from the speed sensor and performs predetermined arithmetic operations on that signal. The electronic control unit calculates a wheel speed based on the output signal of the speed sensor, performs a frequency analysis for the calculated vehicle speed, and derives a resonance frequency corresponding to the unsprung mass in the vertical and longitudinal directions. The tire air pressure is then detected based on this resonance frequency.