公开(公告)号：US20160031273A1

公开(公告)日：2016-02-04

申请号：US14776220

申请日：2014-03-11

Applicant: DENSO CORPORATION ,  NIPPON SOKEN, INC.

Inventor： Youichirou SUZUKI ,  Takashi SAITOU ,  Akira TAKAOKA ,  Nobuya WATABE ,  Takatoshi SEKIZAWA ,  Masashi MORI

IPC: B60C23/06 ,  B60C19/00

CPC classification number: B60C23/065 ,  B60C19/00 ,  B60C23/0411 ,  B60C23/064 ,  B60C2019/004 ,  B60T8/1725

Abstract: A tire device includes a vibration power generating element, a signal processing unit, and a transmitter. The vibration power generating element is arranged inside a tire and outputs a voltage corresponding to a time variation of a vibration generated in a tread of the tire. The signal processing unit is disposed inside the tire and performs signal processing on the voltage outputted from the vibration power generating element. The transmitter is arranged inside the tire and sends data subjected to the signal processing in the signal processing unit to a device provided outside the tire. The signal processing unit and the transmitter are driven by power generated in the vibration power generating element.

Abstract translation: 轮胎装置包括振动发电元件，信号处理单元和发射器。 振动发电元件设置在轮胎内部，并输出与轮胎胎面产生的振动的时间变化相对应的电压。 信号处理单元设置在轮胎内，对从振动发电元件输出的电压进行信号处理。 发射器布置在轮胎内部，并将经过信号处理的信号处理单元中的数据发送到设在轮胎外部的装置。 信号处理单元和发送器由振动发电元件中产生的电力驱动。

公开(公告)号：US20200208969A1

公开(公告)日：2020-07-02

申请号：US16814789

申请日：2020-03-10

Applicant: DENSO CORPORATION

Inventor： Yoichiro SUZUKI ,  Takatoshi SEKIZAWA ,  Nobuya WATABE

IPC: G01B17/08 ,  B60C23/04

Abstract: In a road surface condition determining device, when determining a road surface condition, a vibration detection unit, a waveform processing unit and a data transmission unit for implementing a sensing function and a data transmission function are not set continuously to an active state for all tire side device, but at least only one tire side device is set to an active state. Remaining one or more is set to a sleep state. A reduction in power consumption of the tire side devices set to the sleep state can thus be achieved. Further, with regard to the at least one tire side device, since the sensing function and the data transmission function remain in the active state, the road surface condition can be reliably determined based on the road surface data of the tire side device.

公开(公告)号：US20170210185A1

公开(公告)日：2017-07-27

申请号：US15328533

申请日：2015-07-24

Applicant: DENSO CORPORATION

Inventor： Takatoshi SEKIZAWA ,  Masashi MORI ,  Nobuya WATABE

IPC: B60C23/04 ,  G01D5/16

CPC classification number: B60C23/0416 ,  B29D2030/0072 ,  B60C23/0488 ,  B60C23/0489 ,  G01D5/16 ,  G08C17/00

Abstract: A wheel position detecting device can suppress an erroneous detection of a wheel position even if a moving direction of a vehicle cannot be determined by wheel speed sensors whether in a forward direction or in a rearward direction. When an edge number (or a tooth number) is incremented based on detection signals of the wheel speed sensors of one, two or three wheels while the vehicle is at a halt, the edge number (or the tooth number) is not used as learning data. Thus, it is less likely that the wheel position is erroneously detected based on erroneous learning data. Therefore, even if the moving direction of the vehicle cannot be determined whether in the forward direction or the rearward direction by the wheel speed sensors, the wheel position detecting device can suppress the erroneous wheel position detection.

公开(公告)号：US20160368502A1

公开(公告)日：2016-12-22

申请号：US15122227

申请日：2015-03-12

Applicant: DENSO CORPORATION

Inventor： Youichirou SUZUKI ,  Akira TAKAOKA ,  Takashi SAITOU ,  Nobuya WATABE ,  Masashi MORI ,  Takatoshi SEKIZAWA

IPC: B60W40/06 ,  G01M17/02

CPC classification number: B60W40/06 ,  B60C19/00 ,  B60W40/068 ,  B60W2520/26 ,  B60W2530/20 ,  G01M17/025

Abstract: A road surface condition estimation device includes a tire side device and a vehicle side device. The tire side device includes a vibration detection unit outputting a detection signal indicating a tire vibration magnitude, a signal processing unit, and a transmitter. The signal processing unit extracts a ground contact duration during which a portion of the tread corresponding to an arrangement position of the vibration detection unit is in contact with a ground, calculates a high frequency component level of the detection signal detected during the ground contact duration, counts cumulative rotation number of the tire, and corrects the level of the high frequency component based on the cumulative rotation number of the tire. The transmitter transmits corrected level of the high frequency component as road surface condition data. The vehicle side device estimates a road surface condition of the travelling road based on the received road surface condition data.

Abstract translation: 路面状态估计装置包括轮胎侧装置和车辆侧装置。 轮胎侧装置包括输出表示轮胎振动幅度的检测信号的振动检测单元，信号处理单元和发送器。 信号处理单元提取地面接触持续时间，在该接触持续时间期间，与振动检测单元的布置位置对应的部分胎面与地面接触，计算在接地持续时间期间检测到的检测信号的高频分量电平， 计算轮胎的累积转数，并且基于轮胎的累积转数来校正高频分量的水平。 发射机发送高频分量的校正电平作为路面状况数据。 车辆侧装置根据接收到的路面条件数据来估计行驶道路的路面状况。

公开(公告)号：US20160368501A1

公开(公告)日：2016-12-22

申请号：US15122218

申请日：2015-03-12

Applicant: DENSO CORPORATION

Inventor： Youichirou SUZUKI ,  Akira TAKAOKA ,  Takashi SAITOU ,  Nobuya WATABE ,  Masashi MORI ,  Takatoshi SEKIZAWA

IPC: B60W40/06

CPC classification number: B60W40/06 ,  B60C19/00 ,  B60T2210/12 ,  B60W40/068 ,  B60W2520/28

Abstract: A road surface condition estimation device includes a tire side device and a vehicle side device. The tire side device includes a vibration detection unit attached to a back surface of a tire tread and outputting a detection signal indicating a tire vibration magnitude, a signal processing unit, and a transmitter. The signal processing unit extracts a ground contact duration during which a portion of the tread corresponding to an arrangement position of the vibration detection unit is in contact with a ground, and calculates a high frequency component level of the detection signal detected during the ground contact duration as road surface condition data. When the ground contact duration is ended, a transmission trigger is transmitted to the transmitter and the transmitter transmits the road surface condition data. The vehicle side device estimates a road surface condition of the travelling road based on the road surface condition data.

Abstract translation: 路面状态估计装置包括轮胎侧装置和车辆侧装置。 轮胎侧装置包括安装在轮胎胎面的背面的振动检测单元，输出表示轮胎振动幅度的检测信号，信号处理单元和发送器。 信号处理单元提取地面接触持续时间，在该接地持续时间期间，与振动检测单元的布置位置对应的部分胎面与地面接触，并且计算在接地持续时间期间检测到的检测信号的高频分量电平 作为路面状况数据。 当接地持续时间结束时，传输触发被发送到发射机，并且发射机发射路面状况数据。 车辆侧装置基于路面状况数据来估计行驶道路的路面状况。