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公开(公告)号：US20170080927A1
公开(公告)日：2017-03-23
申请号：US15126457
申请日：2015-03-12
Applicant: DENSO CORPORATION
Inventor： Youichirou SUZUKI , Akira TAKAOKA , Takashi SAITOU , Nobuya WATABE , Masashi MORI , Takatoshi SEKIZAWA
CPC classification number: B60W30/08 , B60C19/00 , B60C2019/004 , B60K28/14 , B60R16/0232 , B60W10/04 , B60W10/06 , B60W10/18 , B60W10/184 , B60W40/105 , B60W50/12 , B60W50/14 , B60W2050/143 , B60W2420/54 , B60W2520/04 , B60W2520/10 , B60W2550/10
Abstract: 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.
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公开(公告)号：US20170203620A1
公开(公告)日：2017-07-20
申请号：US15326152
申请日：2015-07-07
Applicant: DENSO CORPORATION
Inventor： Ryoichi IJIMA , Nobuya WATABE
IPC: B60C23/04
CPC classification number: B60C23/0488 , B60C23/0415 , B60C23/0459 , B60C23/0474 , B60C23/0489
Abstract: 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.
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公开(公告)号：US20210146731A1
公开(公告)日：2021-05-20
申请号：US17157687
申请日：2021-01-25
Applicant: DENSO CORPORATION
Inventor： Ryosuke KANBAYASHI , Nobuya WATABE , Masashi MORI
IPC: B60C11/24
Abstract: A tire system includes a tire side device that is arranged corresponding to a tire provided in a vehicle and transmits data related to the tire, and a wear estimation unit that estimates a tire wear state based on the data related to the tire. The tire side device holds data related to an elapsed time since the tire was manufactured as data related to the tire, transmits data related to the elapsed time to the wear estimation unit. The wear estimation unit estimates the tire wear state based on the mileage from the start of use of the tire and a tire deterioration degree indicated by the data related to the elapsed time.
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公开(公告)号：US20200346655A1
公开(公告)日：2020-11-05
申请号：US16929862
申请日：2020-07-15
Applicant: DENSO CORPORATION
Inventor： Yoichiro SUZUKI , Nobuya WATABE , Masashi MORI , Takatoshi SEKIZAWA
Abstract: A road surface state determination device includes a tire-side device and a vehicle-body-side system. The tire-side device is attached to each of a plurality of tires included in a vehicle. The vehicle-body-side system is included in a body of the vehicle. The tire-side device may output a detection signal corresponding to a magnitude of vibration of the tire. The tire-side device may sense the detection signal and generate road surface data indicative of a road surface state appearing in a waveform of the detection signal. The tire-side device may transmit the road surface data. The vehicle-body-side system may perform bidirectional communication with the tire-side device and receive the road surface data. The vehicle-body-side system may determine the road surface state of a road surface on which the vehicle is traveling based on the road surface data.
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公开(公告)号：US20200254830A1
公开(公告)日：2020-08-13
申请号：US16860049
申请日：2020-04-27
Applicant: DENSO CORPORATION
Inventor： Takatoshi SEKIZAWA , Nobuya WATABE
Abstract: 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.
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Patent Agency Ranking
公开(公告)号：US20200231162A1
公开(公告)日：2020-07-23
申请号：US16841488
申请日：2020-04-06
Applicant: DENSO CORPORATION
Inventor： Masashi MORI , Nobuya WATABE
IPC: B60W40/06 , B60W50/029 , B60W50/04
Abstract: A road surface condition assessing device includes a tire-side device disposed in a tire and a vehicle-body-side system disposed on a vehicle body side. The tire-side device generates a detection signal corresponding to a magnitude of vibration of the tire, produces road surface data based on the detection signal, and performs data communication with the vehicle-body-side system. The vehicle-body-side system performs the data communication with the tire-side device and assesses a road surface condition based on the road surface data received from the tire-side device.
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公开(公告)号：US20200317204A1
公开(公告)日：2020-10-08
申请号：US16910412
申请日：2020-06-24
Applicant: DENSO CORPORATION
Inventor： Ryosuke KANBAYASHI , Nobuya WATABE
Abstract: A road surface condition assessing device includes: a tire-mounted device; and a vehicle body system. The tire-mounted device includes: a vibration detector that outputs a detection signal of a vibration on a tire; a waveform processor that generates the road surface data; and a first data communication unit. The vehicle body system includes: a second data communication unit; and a road surface evaluation unit that evaluates the road surface condition. The tire-mounted device transmits an advertise signal including the road surface data indicative of a result of a waveform process on the detection signal and a waveform processing value corresponding to the road surface condition. The vehicle body system evaluates the road surface condition based on the waveform processing value.
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公开(公告)号：US20190077408A1
公开(公告)日：2019-03-14
申请号：US16083912
申请日：2017-01-12
Applicant: DENSO CORPORATION
Inventor： Takatoshi SEKIZAWA , Masashi MORI , Nobuya WATABE , Hideyuki IKEMOTO , Yoichiro SUZUKI
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.
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公开(公告)号：US20170057306A1
公开(公告)日：2017-03-02
申请号：US15122820
申请日：2015-02-26
Applicant: DENSO CORPORATION
Inventor： Youichirou SUZUKI , Akira TAKAOKA , Takashi SAITOU , Nobuya WATABE , Masashi MORI , Takatoshi SEKIZAWA
CPC classification number: B60C23/0486 , B60C23/064 , B60C25/007 , B60C25/0551 , G01B17/00 , G01L17/00
Abstract: Data representing a ground contact time of a tire is transmitted from a tire side device, and received by a vehicle side device to calculate the ground contact time of the tire, to thereby calculate a ground contact length of the tire at that time. In a situation where a tire air pressure may change such as a tire exchange, the ground contact length at that time is set as a reference ground contact length, and a determination reference value is set on the basis of the reference ground contact length. As a result, the relative determination reference value corresponding to the tire type can be set, and a variation of the reduction rate of the tire air pressure when it is determined that the tire air pressure is reduced can be reduced. As a result, the reduction in the tire air pressure can be detected with high precision regardless of the tire type.
Abstract translation: 表示轮胎的接地时间的数据从轮胎侧装置传递，并且由车辆侧装置接收，以计算轮胎的接地时间，从而计算出当时轮胎的接地长度。 在轮胎气压变化等轮胎更换的情况下，将此时的接地长度设定为基准接地长度，并且基于参考接地长度来设定判定基准值。 结果，可以设定与轮胎类型相对应的相对判定基准值，并且可以减少当确定轮胎空气压力降低时轮胎空气压力的减小率的变化。 结果，无论轮胎类型如何，都可以高精度地检测轮胎空气压力的降低。
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公开(公告)号：US20160167459A1
公开(公告)日：2016-06-16
申请号：US14908389
申请日：2014-06-16
Applicant: DENSO CORPORATION
Inventor： Noriaki OKADA , Nobuya WATABE , Masashi MORI
IPC: B60C23/04
CPC classification number: B60C23/0445 , B60C23/0455 , B60C23/0462 , G01L17/00
Abstract: In a tire inflation pressure detection device, a receiver functions such that, when an ignition switch is on, power is generated by a power supply controller to set the power supply state of the receiver to one in which frame reception is enabled to detect the inflation pressure of a tire, and such that, when the IG is off, in each predetermined intermittent cycle power is generated by the power supply controller to set the power supply state of the receiver to one in which frame reception is enabled to detect the inflation pressure of the tire. A transmitter determines whether a decrease in tire inflation pressure occurs, and when the decrease occurs, the transmitter transmits frames more frequently than before the occurrence of the decrease in tire inflation pressure at a shorter frame transmission time interval than a regular transmission cycle during a high-frequency transmission period.
Abstract translation: 在轮胎充气压力检测装置中，接收器的功能是使得当点火开关打开时，由电源控制器产生电力，以将接收器的电源状态设置为能够检测充电的帧接收 并且使得当IG处于关闭状态时，在每个预定的间歇循环中，由电源控制器产生功率，以将接收机的电源状态设置为允许帧接收以检测充气压力 的轮胎。 发射机确定是否发生轮胎充气压力的下降，并且当发生减小时，发射器比在高频期间比正常发射周期更短的帧传输时间间隔发生轮胎充气压力降低之前更频繁地发送帧 频率传输期。
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