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.

公开(公告)号：US5497657A

公开(公告)日：1996-03-12

申请号：US133440

申请日：1993-10-08

申请人： Takeyasu Taguchi ,  Toshiharu Naito ,  Hiromi Tokuda ,  Yuuichi Inoue ,  Shusaku Fujimoto ,  Kenji Fujiwara

发明人： Takeyasu Taguchi ,  Toshiharu Naito ,  Hiromi Tokuda ,  Yuuichi Inoue ,  Shusaku Fujimoto ,  Kenji Fujiwara

IPC分类号： B60C23/06 ,  B60C23/00 ,  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.

摘要翻译： 本发明的目的是以高检测精度间接地检测轮胎气压。 轮胎气压检测装置包括用于输出对应于轮胎的转速的信号的速度传感器，以及输入来自速度传感器的信号并对该信号执行预定的算术运算的电子控制单元。 电子控制单元基于速度传感器的输出信号计算车轮速度，对计算出的车速进行频率分析，得到与垂直方向和长度方向的簧下质量对应的共振频率。 然后基于该共振频率检测轮胎空气压力。

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：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：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：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：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：US06450020B1

公开(公告)日：2002-09-17

申请号：US09649817

申请日：2000-08-28

申请人： Toshiharu Naito ,  Mamoru Sawada ,  Takeyasu Taguchi ,  Yuichi Inoue

发明人： Toshiharu Naito ,  Mamoru Sawada ,  Takeyasu Taguchi ,  Yuichi Inoue

IPC分类号： B60C2302

CPC分类号： B60C23/062 ,  B60C23/061

摘要： In a tire air pressure warning device, an outside impact such as hydraulic brake pressure is intentionally applied in a pulsating way to a tire when the vehicle substantially stops so as to exert vibration (rotation variation) of the tire axle. Through data processes in analyzing signals of wheel speed sensors that reflect the rotation variation of the tire axle, tire air pressure is estimated for informing to a driver abnormal tire air pressure.

摘要翻译： 在轮胎气压警告装置中，当车辆基本上停止时，轮胎轴的振动（旋转变化）发生时，有意地以脉动的方式施加液压制动压力等外部冲击。 通过分析反映轮胎轴的旋转变化的车轮速度传感器的信号的数据处理，轮胎空气压力被估计用于通知驾驶员异常的轮胎空气压力。

公开(公告)号：US5913241A

公开(公告)日：1999-06-15

申请号：US861737

申请日：1997-05-22

申请人： Hideki Ohashi ,  Hiroyuki Kawai ,  Hiroyoshi Kojima ,  Takeyasu Taguchi ,  Kenji Fujiwara ,  Takaji Umeno

发明人： Hideki Ohashi ,  Hiroyuki Kawai ,  Hiroyoshi Kojima ,  Takeyasu Taguchi ,  Kenji Fujiwara ,  Takaji Umeno

IPC分类号： G01L17/00 ,  B60C23/00 ,  B60C23/06 ,  B60C23/20 ,  G01K1/14 ,  B60C23/02 ,  E01C23/00

CPC分类号： B60C23/062 ,  B60C23/061 ,  B60C23/20

摘要： An apparatus for estimating an air pressure of a tire of a tired wheel of a motor vehicle, on the basis of a temperature of the tire as well as a motion of the tired wheel, preferably including a temperature-related variable sensor for detecting a temperature-related variable related to the temperature of the tire, and an estimating device for estimating the air pressure of the tire on the basis of the temperature-related variable as well as the motion of the tired wheel.

摘要翻译： 基于轮胎的温度以及轮胎的运动来估计机动车辆的轮胎的轮胎的空气压力的装置，优选地包括用于检测温度的温度相关的可变传感器 与轮胎的温度有关的变量，以及用于基于温度相关变量以及疲劳轮的运动来估计轮胎的气压的估计装置。