公开(公告)号：US10946861B2

公开(公告)日：2021-03-16

申请号：US16083912

申请日：2017-01-12

Applicant: DENSO CORPORATION

Inventor： Takatoshi Sekizawa ,  Masashi Mori ,  Nobuya Watabe ,  Hideyuki Ikemoto ,  Yoichiro Suzuki

IPC: B60W40/06 ,  B60T8/172 ,  B60T8/173 ,  B60C23/00 ,  B60C19/00 ,  G01M17/02 ,  B60W40/12

Abstract: A hydroplaning determination device that determines occurrence of a hydroplaning phenomenon in a vehicle includes a tire mount sensor including a vibration detection unit, a signal process unit and a transmission unit, and a vehicle body system including a receiver, a condition determination unit and a hydroplaning determination unit. The vibration detection unit is attached to a rear surface of a tire provided in a vehicle and outputs a detection signal according to a magnitude of vibration of the tire. The signal process unit generates a vibration data based on the detection signal. The hydroplaning determination unit determines, based on the vibration data, whether a hydroplaning phenomenon has occurred when the condition determination unit determines that a road surface condition is a wet condition in which a water film exists between the tire and a road surface.

公开(公告)号：US10086842B2

公开(公告)日：2018-10-02

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 ,  B60C19/00 ,  B60W40/068 ,  G01M17/02

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.

公开(公告)号：US09757997B2

公开(公告)日：2017-09-12

申请号：US14368257

申请日：2012-12-25

Applicant: DENSO CORPORATION

Inventor： Masashi Mori ,  Nobuya Watabe ,  Noriaki Okada ,  Takatoshi Sekizawa

IPC: G01P15/00 ,  B60C23/04 ,  G01P3/44

CPC classification number: B60C23/0488 ,  B60C23/0416 ,  B60C23/0489 ,  G01P3/44 ,  G01P15/003

Abstract: In a wheel position detecting device, a transmission angular position of a transmitter to transmit a frame from the transmitter to a receiver is changed by a predetermined angle each time the transmitter transmits the frame. A receiver acquires gear information indicating a tooth position of a gear rotating in association with a corresponding wheel, based on a detection signal of a wheel speed sensor. The receiver specifies to which wheels the transmitter is integrated, based on the tooth position of the gear at a reception timing of the frame.

公开(公告)号：US09531340B2

公开(公告)日：2016-12-27

申请号：US14406695

申请日：2013-06-11

Applicant: DENSO CORPORATION

Inventor： Takashi Saitou ,  Akira Takaoka ,  Nobuya Watabe ,  Takatoshi Sekizawa ,  Munenori Matsumoto

IPC: H03H7/40 ,  H04B1/18

CPC classification number: H03H7/40 ,  H04B1/18

Abstract: A communication device changes an applied voltage output from a voltage circuit, and allows a capacitance measuring device to measure the respective capacitance values of a variable capacitance element before and after a change in the applied voltage. The communication device calculates a voltage correction value for correcting an initial variation of the capacitance value of the variable capacitance element using the respective capacitance values of the variable capacitance element before and after the change in the applied voltage, and respective applied voltage values before and after the change, and a correction voltage for canceling the initial variation in the capacitance value of the variable capacitance element, and outputs the correction voltage from the voltage circuit.

Abstract translation: 通信装置改变来自电压电路的施加电压输出，并且允许电容测量装置测量施加电压变化之前和之后的可变电容元件的各自的电容值。 通信装置使用在施加电压的变化前后的可变电容元件的各自的电容值以及前后的各个施加电压来计算用于校正可变电容元件的电容值的初始变化的电压校正值 该变化以及用于消除可变电容元件的电容值的初始变化的校正电压，并输出来自电压电路的校正电压。

公开(公告)号：US20150162892A1

公开(公告)日：2015-06-11

申请号：US14406695

申请日：2013-06-11

Applicant: DENSO CORPORATION

Inventor： Takashi Saitou ,  Akira Takaoka ,  Nobuya Watabe ,  Takatoshi Sekizawa ,  Munenori Matsumoto

IPC: H03H7/40

CPC classification number: H03H7/40 ,  H04B1/18

Abstract: A communication device changes an applied voltage output from a voltage circuit, and allows a capacitance measuring device to measure the respective capacitance values of a variable capacitance element before and after a change in the applied voltage. The communication device calculates a voltage correction value for correcting an initial variation of the capacitance value of the variable capacitance element using the respective capacitance values of the variable capacitance element before and after the change in the applied voltage, and respective applied voltage values before and after the change, and a correction voltage for canceling the initial variation in the capacitance value of the variable capacitance element, and outputs the correction voltage from the voltage circuit.

Abstract translation: 通信装置改变来自电压电路的施加电压输出，并且允许电容测量装置测量施加电压变化之前和之后的可变电容元件的各自的电容值。 通信装置使用在施加电压的变化前后的可变电容元件的各自的电容值以及前后的各个施加电压来计算用于校正可变电容元件的电容值的初始变化的电压校正值 该变化以及用于消除可变电容元件的电容值的初始变化的校正电压，并输出来自电压电路的校正电压。

公开(公告)号：US20150006104A1

公开(公告)日：2015-01-01

申请号：US14373472

申请日：2013-01-23

Applicant: DENSO CORPORATION

Inventor： Noriaki Okada ,  Nobuya Watabe ,  Masashi Mori ,  Takatoshi Sekizawa

IPC: B60C23/04 ,  G01P3/44 ,  G01L17/00 ,  G01P15/00

CPC classification number: B60C23/0489 ,  B60C23/0416 ,  G01L17/00 ,  G01P3/44 ,  G01P15/003

Abstract: In a wheel position detecting device, a receiver acquires gear information indicating a tooth position of a gear rotating in association with a corresponding wheel at a predetermined interval. In a wheel position detection, the receiver sets a variation allowance range based on the tooth position at a reception timing of a frame transmitted from a transmitter integrated to each wheel. When the tooth position of the gear at a subsequent reception timing of the frame is not within the variation allowance range, the receiver excludes the wheel corresponding to the gear from a candidate wheel. The receiver registers the wheel remaining last as the wheel to which the transmitter is integrated. The receiver performs the wheel position detection only when a wheel speed is higher than a predetermined threshold, so that the wheel position detection is performed based on an accurate tooth position.

Abstract translation: 在车轮位置检测装置中，接收器以预定间隔获取指示与相应车轮相关联的齿轮的齿位置的齿轮信息。 在车轮位置检测中，接收机基于在从集成到每个车轮的发射机发送的帧的接收定时处基于齿位置设置变化允差范围。 当在帧的后续接收定时处的齿轮的齿位置不在变化容许范围内时，接收器从候选轮排除与齿轮对应的车轮。 接收机将最后剩余的车轮记录为发射器整合到的车轮上。 接收机仅在车轮速度高于预定阈值时执行车轮位置检测，从而基于准确的齿位置执行车轮位置检测。

公开(公告)号：US20140379291A1

公开(公告)日：2014-12-25

申请号：US14368384

申请日：2012-12-25

Applicant: DENSO CORPORATION

Inventor： Masashi Mori ,  Nobuya Watabe ,  Noriaki Okada ,  Takatoshi Sekizawa

IPC: B60C23/04 ,  G01P3/44 ,  G01P15/00

CPC classification number: B60C23/0488 ,  B60C23/0416 ,  B60C23/0462 ,  B60C23/0489 ,  G01P3/44 ,  G01P15/003

Abstract: In a wheel position detector for a vehicle, a transmitter on each wheel repeatedly transmits a data frame containing identification information when an angle of the transmitter reaches a transmission angle. A receiver for receiving the frame is mounted on a body of a vehicle and performs wheel position detection based on the frame to specify a target wheel from which the frame is transmitted. The receiver acquires a tooth position of a gear rotating with a corresponding wheel when receiving the frame and sets a variation allowable range based on the tooth position. The receiver specifies the target wheel by determining whether the tooth position falls within the variation allowable range. The transmitter changes the transmission angle at a predetermined time interval.

Abstract translation: 在用于车辆的车轮位置检测器中，当发射机的角度达到传输角度时，每个车轮上的发射器重复发送包含识别信息的数据帧。 用于接收框架的接收器安装在车辆的车身上，并且基于该帧执行车轮位置检测，以指定从其发送帧的目标车轮。 接收器在接收到框架时​​获取与相应的车轮旋转的齿轮的齿位置，并且基于齿位置设定变化允许范围。 接收器通过确定齿位置是否落在变化允许范围内来指定目标轮。 发射机以预定的时间间隔改变传输角度。

公开(公告)号：US20130196610A1

公开(公告)日：2013-08-01

申请号：US13753020

申请日：2013-01-29

Applicant: DENSO CORPORATION ,  Nippon Soken, Inc.

Inventor： Kenichiro Sanji ,  Munenori Matsumoto ,  Takatoshi Sekizawa ,  Masahiro Sugiura ,  Nobuya Watabe ,  Akira Takaoka ,  Takashi Saitou

IPC: H04W4/00

CPC classification number: H04W4/80 ,  G07C9/00309 ,  G07C2009/00325 ,  G07C2009/00793 ,  H04B1/0458 ,  H04B1/18

Abstract: A first communication apparatus and a second communication apparatus are capable of wireless communication with each other. The first communication apparatus has a normal operation mode and a tuning mode that differs from the normal operation mode and allows a variable matching portion to adjust a matching state. When the tuning mode is selected, the first transmission portion transmits an operation mode transition request signal to the second communication apparatus. A first reception portion receives a tuning reference signal transmitted from the second communication apparatus in response to the operation mode transition request signal. A reception signal intensity measurement portion measures a reception signal intensity of the received tuning reference signal. The variable matching portion adjusts a matching state based on the measured reception signal intensity of the tuning reference signal.

Abstract translation: 第一通信装置和第二通信装置能够彼此进行无线通信。 第一通信装置具有与正常操作模式不同的正常操作模式和调谐模式，并且允许可变匹配部分调整匹配状态。 当选择调谐模式时，第一发送部分向第二通信装置发送操作模式转换请求信号。 第一接收部分响应于操作模式转换请求信号接收从第二通信装置发送的调谐参考信号。 接收信号强度测量部分测量所接收的调谐参考信号的接收信号强度。 可变匹配部分基于所测量的调谐参考信号的接收信号强度来调整匹配状态。