公开(公告)号：US10099699B2

公开(公告)日：2018-10-16

申请号：US15122218

申请日：2015-03-12

申请人： DENSO CORPORATION

发明人： Youichirou Suzuki ,  Akira Takaoka ,  Takashi Saitou ,  Nobuya Watabe ,  Masashi Mori ,  Takatoshi Sekizawa

IPC分类号： B60W40/06 ,  B60C19/00 ,  B60W40/068

摘要： 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.

公开(公告)号：US20150270614A1

公开(公告)日：2015-09-24

申请号：US14436124

申请日：2013-10-23

申请人： DENSO CORPORATION ,  NIPPON SOKEN, INC.

发明人： Yuuji Kakuya ,  Munenori Matsumoto ,  Akira Takaoka ,  Toshifumi Shimoda ,  Takatoshi Sekizawa ,  Nobuya Watabe

IPC分类号： H01Q9/06 ,  H01Q7/00

CPC分类号： H01Q9/065 ,  H01Q1/243 ,  H01Q1/48 ,  H01Q5/328 ,  H01Q5/378 ,  H01Q7/00 ,  H01Q9/42 ,  H01Q21/30

摘要： In an antenna, a first element is connected to a GND of a feeder, on the same plane as a GND of a wireless circuit, and isolated from the GND of the wireless circuit. A second element is on the same plane as the GND of the wireless circuit and a first end connected to the first element and a second end as an open end. The third element has a first end connected to a power source of the feeder and located in a region occupied by the first element perpendicularly to the first element so that its first end source faces down. The fourth element has a first end connected to a second end of the third element and a second end as an open end, is parallel to the first element, and is perpendicular to a line connecting the first and second ends of the second element.

摘要翻译： 在天线中，第一元件连接到馈线的GND，与无线电路的GND在同一平面上，并与无线电路的GND隔离。 第二元件位于与无线电路的GND相同的平面上，并且与第一元件连接的第一端和作为开放端的第二端。 第三元件具有连接到馈电器的电源的第一端，并且位于由第一元件垂直于第一元件占据的区域中，使得其第一端源面朝下。 第四元件具有连接到第三元件的第二端的第一端和作为开口端的第二端，平行于第一元件，并且垂直于连接第二元件的第一端和第二端的线。

公开(公告)号：US20150020584A1

公开(公告)日：2015-01-22

申请号：US14371279

申请日：2012-12-12

申请人： DENSO CORPORATION

发明人： Noriaki Okada ,  Nobuya Watabe ,  Masashi Mori ,  Takatoshi Sekizawa

IPC分类号： B60C23/04 ,  G01B21/22

CPC分类号： B60C23/0418 ,  B60C23/0415 ,  B60C23/0416 ,  B60C23/042 ,  B60C23/0489 ,  G01B21/22

摘要： A wheel position detector for a vehicle includes: a transmitter at each wheel having a first control portion for transmitting a frame with specific identification information; and a receiver at a vehicle body receiving the frame from one wheel and having a second control portion for performing wheel position detection; and a wheel speed sensor for detecting a tooth of a gear. The second control portion: acquires gear information indicating a tooth position; sets a variation allowance based on the tooth position; registers the one wheel with using the variation allowance; and performs the wheel position detection by excluding an identified wheel as the one wheel from a candidate of another wheel mounting the transmitter that transmits another frame when the second control portion identifies the one wheel.

摘要翻译： 一种用于车辆的车轮位置检测器包括：每个车轮处的发射机具有用于发送具有特定识别信息的帧的第一控制部分; 以及在车身处接收来自一个车轮的框架的接收器，并具有用于执行车轮位置检测的第二控制部分; 以及用于检测齿轮的齿的车轮速度传感器。 第二控制部分：获取指示齿位置的齿轮信息; 根据牙齿位置设定变化余量; 使用变化补偿登记一个车轮; 并且当所述第二控制部分识别所述一个车轮时，从安装所述发送器的另一车轮的另一轮的候选者排除所识别的车轮作为所述车轮位置检测。

公开(公告)号：US20140365162A1

公开(公告)日：2014-12-11

申请号：US14368257

申请日：2012-12-25

申请人： DENSO CORPORATION

发明人： Masashi Mori ,  Nobuya Watabe ,  Noriaki Okada ,  Takatoshi Sekizawa

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

CPC分类号： B60C23/0488 ,  B60C23/0416 ,  B60C23/0489 ,  G01P3/44 ,  G01P15/003

摘要： 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.

摘要翻译： 在车轮位置检测装置中，每当发射机发送帧时，将发射机从发射机发送到接收机的发射机角度位置改变预定角度。 接收器基于车轮速度传感器的检测信号获取指示与相应车轮相关联的齿轮的齿位置的齿轮信息。 接收机基于在帧的接收定时处的齿轮的齿位置来指定发射机被集成到哪个车轮。

公开(公告)号：US11198336B2

公开(公告)日：2021-12-14

申请号：US16860049

申请日：2020-04-27

申请人： DENSO CORPORATION

发明人： Takatoshi Sekizawa ,  Nobuya Watabe

IPC分类号： B60C23/04 ,  G01L17/00

摘要： A tire air pressure detection device includes a plurality of transceivers and a receiver. The plurality of transceivers are correspondingly provided in a plurality of wheels of a vehicle. Each wheel has a tire. The receiver is attached to a vehicle body. Each of the plurality of transceivers outputs a detection signal indicative of an air pressure of the tire of the corresponding wheel. Each of the plurality of transceivers processes the detection signal, and generates a frame storing the processed detection signal as data related to the air pressure of the tire. The receiver receives the frame. The receiver detects the air pressure of the tire based on the data stored in the received frame.

公开(公告)号：US10576797B2

公开(公告)日：2020-03-03

申请号：US15326152

申请日：2015-07-07

申请人： DENSO CORPORATION

发明人： Ryoichi Ijima ,  Nobuya Watabe

IPC分类号： B60C23/04

摘要： A tire pressure detection apparatus includes: a transmitter at each of a plurality of wheels with a tire; and a receiver at a vehicle body. The transmitter has: a sensing device having a pressure sensor outputting a detection signal related to a tire pressure of each of the plurality of wheels and an acceleration sensor detecting an acceleration including a centrifugal acceleration caused by rotation of the wheel and a gravitational acceleration; a first controller performing signal processing on the detection signal of the pressure sensor and creating a frame storing data related to the tire pressure; and a radio wave transmitter transmitting the frame. The receiver has: a radio wave receiver receiving the frame; and a second controller detecting a tire pressure based on the data related to the tire pressure stored in the received frame.

公开(公告)号：US10029681B2

公开(公告)日：2018-07-24

申请号：US15126457

申请日：2015-03-12

申请人： DENSO CORPORATION

发明人： Youichirou Suzuki ,  Akira Takaoka ,  Takashi Saitou ,  Nobuya Watabe ,  Masashi Mori ,  Takatoshi Sekizawa

IPC分类号： B60W30/08 ,  B60C19/00 ,  B60W50/12 ,  B60K28/14 ,  B60R16/023 ,  B60W10/04 ,  B60W10/18

摘要： An erroneous start is controlled based on vibrations of a tire, irrespective of a poor visibility or an algorithm of an image processing. A tire-side unit detects a vibration of a tire when the tire has collided with a wheel stop or the like, and outputs collision data to a vehicle-side unit. The vehicle-side unit determines an erroneous start of the vehicle. Therefore, the erroneous start of the vehicle can be controlled without being affected by the poor visibility or the algorithm of the image processing as in a case of utilizing a camera or a radar.

公开(公告)号：US09757998B2

公开(公告)日：2017-09-12

申请号：US14368384

申请日：2012-12-25

申请人： DENSO CORPORATION

发明人： Masashi Mori ,  Nobuya Watabe ,  Noriaki Okada ,  Takatoshi Sekizawa

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

CPC分类号： B60C23/0488 ,  B60C23/0416 ,  B60C23/0462 ,  B60C23/0489 ,  G01P3/44 ,  G01P15/003

摘要： 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.

公开(公告)号：US09592710B2

公开(公告)日：2017-03-14

申请号：US14373472

申请日：2013-01-23

申请人： DENSO CORPORATION

发明人： Noriaki Okada ,  Nobuya Watabe ,  Masashi Mori ,  Takatoshi Sekizawa

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

CPC分类号： B60C23/0489 ,  B60C23/0416 ,  G01L17/00 ,  G01P3/44 ,  G01P15/003

摘要： 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.

摘要翻译： 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：US09290068B2

公开(公告)日：2016-03-22

申请号：US14365576

申请日：2012-12-04

申请人： DENSO CORPORATION

发明人： Noriaki Okada ,  Masashi Mori ,  Takatoshi Sekizawa ,  Nobuya Watabe

IPC分类号： G06F17/00 ,  B60C23/04

CPC分类号： B60C23/0416 ,  B60C23/0405 ,  B60C23/0488 ,  B60C23/0489

摘要： A wheel position detector for a vehicle includes: a transmitter at each wheel having a first controller for generating and repeatedly transmitting a frame with specific identification information and an acceleration sensor; a receiver at a vehicle body receiving the frame from one wheel and having a second controller for performing wheel position detection; and a wheel speed sensor for detecting a tooth of a gear. The second controller acquires gear information indicating a tooth position; sets a variation allowance based on the tooth position; registers the one wheel with using the variation allowance; sets another variation allowance based on another tooth position when the receiver receives a new frame; and changes the variation allowance to a new variation allowance provided by an overlap portion between the variation allowance and another variation allowance.

摘要翻译： 一种用于车辆的车轮位置检测器包括：每个车轮处的发射机具有用于产生并重复地发送具有特定识别信息的帧的第一控制器和加速度传感器; 在车身处接收来自一个车轮的车架的接收器，并具有执行车轮位置检测的第二控制器; 以及用于检测齿轮的齿的车轮速度传感器。 第二控制器获取指示齿位置的齿轮信息; 根据牙齿位置设定变化余量; 使用变化补偿登记一个车轮; 当接收器接收到新的帧时，基于另一个齿位置设置另一种变化允许; 并将变更余量变更为由变更余量与其他变更余量之间的重叠部分提供的新变更余量。