公开(公告)号：US20230065022A1

公开(公告)日：2023-03-02

申请号：US18054265

申请日：2022-11-10

Applicant: DENSO CORPORATION

Inventor： Atsushi KOBAYASHI ,  Michihiro MAKITA ,  Yusuke KARIYA

IPC: G01D5/245

Abstract: A rotation detection device includes: a detector arranged with a gap to a rotating body in which rotation position information is periodically provided at regular intervals, and detecting a magnetic change as a rotation position of the rotating body; and a signal processor acquiring the rotation position information. The detector has first and second magnetic elements arranged with an interval of a/2 in a rotation direction. Each regular interval is defined as a. The first magnetic element outputs a first signal having a period corresponding to the regular intervals. The second magnetic element outputs a second signal having an opposite phase to the first signal and the period. The signal processor acquires a differential signal between the first and second signals as the rotation position information.

公开(公告)号：US20200096368A1

公开(公告)日：2020-03-26

申请号：US16697902

申请日：2019-11-27

Applicant: DENSO CORPORATION

Inventor： Atsushi KOBAYASHI ,  Yasuhiro KITAURA ,  Michihiro MAKITA ,  Akito SASAKI ,  Tetsuya OHMI

IPC: G01D5/14

Abstract: A position sensor includes a detector and a signal processor. The detector includes: a sensor chip having a surface; a first detection element disposed at the surface of the sensor chip; and a second detection element disposed at the surface of the sensor chip. The signal processor processes a signal input from the detector. The first detection element outputs a first detection signal corresponding to a position of a detection target, based on a change in a magnetic field received from the detection target. The second detection element outputs a second detection signal corresponding to the position of the detection target, based on the change in the magnetic field received from the detection target. A center of balance of the first detection element coincides with a center of balance of the second detection element.

公开(公告)号：US20200072863A1

公开(公告)日：2020-03-05

申请号：US16677975

申请日：2019-11-08

Applicant: DENSO CORPORATION

Inventor： Akito SASAKI ,  Atsushi KOBAYASHI ,  Michihiro MAKITA ,  Tetsuya OHMI

IPC: G01P3/52 ,  F16H59/08 ,  F16H61/02

Abstract: A position sensor including: a power supply terminal to which a power supply voltage is applied; a ground terminal to which a ground voltage is applied; an output terminal that outputs a signal; a detection portion that operates based on the power supply voltage and the ground voltage, and detects a position of a detection target by a magnetic resistance element whose resistance value changes according to a movement of the detection target; and a signal processing portion that operates based on the power supply voltage and the ground voltage, and processes a signal input from the detection portion.

公开(公告)号：US20190101416A1

公开(公告)日：2019-04-04

申请号：US16082964

申请日：2016-07-14

Applicant: DENSO CORPORATION

Inventor： Atsushi KOBAYASHI ,  Michihiro MAKITA

IPC: G01D5/245 ,  G01R33/09 ,  G01D5/16 ,  F02D41/00

Abstract: A rotation detection device includes a detection unit and a determination circuit unit. A first magnetoresistive element pair, a second magnetoresistive element pair and a third magnetoresistive element pair are located to be farther from the end part than a fourth magnetoresistive element pair and a fifth magnetoresistive element pair are. The second magnetoresistive element pair is located in a region surrounded by the first magnetoresistive element pair, the third magnetoresistive element pair, the fourth magnetoresistive element pair and the fifth magnetoresistive element pair. The detection unit is to generate a main signal based on outputs of the first magnetoresistive element pair, the second magnetoresistive element pair and the third magnetoresistive element pair and to generate a sub signal based on outputs of the fourth magnetoresistive element pair and the fifth magnetoresistive element pair.

公开(公告)号：US20250155265A1

公开(公告)日：2025-05-15

申请号：US19024600

申请日：2025-01-16

Applicant: DENSO CORPORATION

Inventor： Yasuhiro KITAURA ,  Nagisa ONODA ,  Michihiro MAKITA ,  Tetsuya OHMI ,  Takamasa KIMPARA ,  Tomoyuki HARADA ,  Kazuhiro YOSHINO ,  Naohiro SUGIMOTO ,  Kazuaki WATANABE ,  Takuma ESAKA ,  Koki KAWAKAMI ,  Atsushi KOBAYASHI ,  Hidekazu WATANABE ,  Takeshi ITO ,  Koichiro MATSUMOTO ,  Tsukasa KONO ,  Ryosuke MURAYAMA

IPC: G01D5/20 ,  G01B7/30

Abstract: A position detection device includes a substrate disposed to face a displaceable detection object, a transmitting coil provided in the substrate, a first receiving coil and a second receiving coil which are disposed inside the transmitting coil in a normal direction with respect to a surface direction of the substrate, and a signal processing unit that derives a displacement amount of the detection object in view of a gap between the detection object and the substrate, based on a first characteristic value of the first receiving coil and a second characteristic value of the second receiving coil.

公开(公告)号：US20220227362A1

公开(公告)日：2022-07-21

申请号：US17658224

申请日：2022-04-06

Applicant: DENSO CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Atsushi KOBAYASHI ,  Yoshiki HAYAKAWA ,  Masumi FUKUMAN ,  Akihiro KIDA ,  Kunihiro SUGIHARA

IPC: B60W30/09 ,  B60W30/095 ,  B60W50/14 ,  B60W10/18 ,  B60R21/01 ,  G01S15/36 ,  G01S15/58 ,  G01S15/931 ,  G06V20/58

Abstract: A control device to be applied to a vehicle equipped with an imaging device, a ranging device, and a safety device is configured to, based on moving-object detection information around the vehicle acquired from images captured by the imaging device, perform a first actuation process directed to moving objects to actuate the safety device, and based on stationary-object detection information around the vehicle acquired from measurements made by the ranging device, perform a second actuation process directed to stationary objects to actuate the safety device. In the control device, a mask region setting unit is configured to set at least either neighborhood-of-stationary-object regions or far-side regions as a mask region. An actuation restriction unit is configured to, in response to the moving object determined to be present around the vehicle being present in the mask area, restrict performance of the first actuation process on the moving object.

公开(公告)号：US20200096367A1

公开(公告)日：2020-03-26

申请号：US16697806

申请日：2019-11-27

Applicant: DENSO CORPORATION

Inventor： Yasuhiro KITAURA ,  Atsushi KOBAYASHI ,  Michihiro MAKITA ,  Akito SASAKI ,  Tetsuya OHMI

IPC: G01D5/14 ,  G01D5/245

Abstract: A position sensor includes a detector and a signal processor. The detector includes a magnet generating a bias magnetic field and a detection element configured to be applied by the bias magnetic field, and generates plural detection signals including distinct phase difference and corresponding to plural ranges aligned in one direction along a movement direction of a detection target, based on a change in a magnetic field received by the detection element from the detection target with a movement of the detection target having a magnetic body. The signal processor acquires the detection signals from the detector, compares the detection signals with a threshold value, and specifies a position of the detection target as a position at one of the ranges based on a combination of magnitude relation between the detection signals and the threshold value.

公开(公告)号：US20200072593A1

公开(公告)日：2020-03-05

申请号：US16676645

申请日：2019-11-07

Applicant: DENSO CORPORATION

Inventor： Atsushi KOBAYASHI ,  Yasuhiro KITAURA ,  Michihiro MAKITA ,  Akito SASAKI ,  Tetsuya OHMI

IPC: G01B7/00 ,  F16H59/08 ,  F16H61/02 ,  G01D5/14 ,  G01D5/245 ,  G01P13/02

Abstract: A position sensor includes a detector (122) and a signal processor (123). The detector generates detection signals, which have a distinct phase difference and which respectively correspond to ranges aligned in one direction along a movement direction of a detection target (200, 202, 203) having a magnetic material, based on a change in a magnetic field received from the detection target along with a movement of the detection target. The signal processor acquires the detection signals from the detector, compares the detection signals with a threshold value, and specifies a position of the detection target as a position covered by one of the ranges based on a combination of magnitude relations of the detection signals and the threshold value.

公开(公告)号：US20190137577A1

公开(公告)日：2019-05-09

申请号：US16234938

申请日：2018-12-28

Applicant: DENSO CORPORATION

Inventor： Yasuyuki OKUDA ,  Atsushi KOBAYASHI ,  Hiroki KAJIO ,  Michihiro MAKITA

IPC: G01R33/09

Abstract: A magnetic detection element includes an element part and a metal film. The element part is arranged on a surface of a substrate, and has linear portions arranged in parallel with each other and connecting portions connecting the linear portions in a meandering shape. The metal film has a first layered portion stacked on a turn portion of the element part defined by the connecting portion and a connection between the connecting portion and the linear portion, and a second layered portion formed integrally with the first layered portion to entirely cover a region of the surface surrounded by an internal end of the turn portion. The first layered portion has a peripheral side disposed between the internal end and an external end of the turn portion so as to expose an outer periphery of the turn portion.

公开(公告)号：US20170104479A1

公开(公告)日：2017-04-13

申请号：US15117487

申请日：2015-03-12

Applicant: DENSO CORPORATION

Inventor： Atsushi KANAMORI ,  Sadahiro AKAMA ,  Kiyoshi YAMAMOTO ,  Atsushi KOBAYASHI

IPC: H03K17/14 ,  H03K17/28

CPC classification number: H03K17/14 ,  H03K17/165 ,  H03K17/168 ,  H03K17/28

Abstract: A drive device for controlling a power switching element to turn on and off includes: an on-side circuit performing an on operation of the power switching element; an off-side circuit performing an off operation of the power switching element; and a temperature detector detecting a temperature. At least one of the on-side and off-side circuits includes a current path for supplying or drawing a gate current of the power switching element and a switch circuit for switching the gate current. The switch circuit transitionally changes the gate current based on the temperature of the power switching element when the switching circuit switches the gate current.