公开(公告)号：US11867839B2

公开(公告)日：2024-01-09

申请号：US16936379

申请日：2020-07-22

Applicant: DENSO CORPORATION

Inventor： Masahiro Yamamoto

IPC: G01S7/481

CPC classification number: G01S7/4813 ,  G01S7/4812

Abstract: A heater is provided to heat an optical window. The inner face of the optical window is partitioned by the shield plate into a first part for the phototransmitter and a second part for the photoreceiver, the first part for the phototransmitter being arranged to face the first space, the second part for the photoreceiver being arranged to face the second space. The heater includes a first film, a second film, two phototransmitter electrodes, and two photoreceiver electrodes. The first film is a transparent conductive film arranged to cover the first part for the phototransmitter. The second film is a transparent conductive film arranged to cover the second part for the photoreceiver. The two phototransmitter electrodes are configured to energize the first film. The two photoreceiver electrodes are configured to energize the second film.

公开(公告)号：US11624308B2

公开(公告)日：2023-04-11

申请号：US17711533

申请日：2022-04-01

Applicant: DENSO CORPORATION

Inventor： Masahiro Yamamoto

IPC: F01N9/00 ,  F01N11/00

Abstract: In a control apparatus, a heater adjuster performs a regeneration task of causing a heater to heat a sensing member of a particulate matter sensor to burn particulate matter deposited on the sensing member to thereby remove the particulate matter from the sensing member. The heater adjuster performs a deposition reduction task of maintaining, for a predetermined duration, a temperature of the sensing member at a deposition reduction temperature that reduces additional particulate-matter deposition on the sensing member. The predetermined duration is defined from completion of a regeneration task to a time when an environmental condition around the particulate matter sensor is determined to be stable. The heater adjuster stops the heater from heating the sensing member if a condition determiner determines that the environmental condition around the particulate matter sensor is stable.

公开(公告)号：US11431332B2

公开(公告)日：2022-08-30

申请号：US17072724

申请日：2020-10-16

Applicant: DENSO CORPORATION

Inventor： Masahiro Yamamoto ,  Akimasa Niwa

IPC: H03K17/082 ,  H03K17/08

Abstract: A gate drive circuit includes a driver for driving a gate of a switching element, a peak voltage detector, and a drive capacity calculator. The peak voltage detector detects a peak voltage at a main terminal of the switching element when the switching element is OFF. The drive capacity calculator calculates a voltage difference value between the detected peak voltage and an allowable voltage value at the main terminal of the switching element, where the allowable voltage is based on the specifications of the switching element. The drive capacity calculator changes a drive capacity of the driver to gradually decrease the difference between the detected peak voltage and the allowable voltage.

公开(公告)号：US10890517B2

公开(公告)日：2021-01-12

申请号：US16086391

申请日：2017-02-09

Applicant: DENSO CORPORATION

Inventor： Kazuhiko Koike ,  Masahiro Yamamoto

IPC: G01N15/06 ,  G01N15/00

Abstract: A particulate matter detection device includes a sensor unit which has a detection unit provided with a pair of electrodes and a heater unit provided with a heater electrode and which is configured to output a signal corresponding to the amount of particulate matter, and a sensor control unit which detects the number of particles of the particulate matter. The sensor control unit has a capture control unit, a heating control unit to heat the detection unit to a first temperature at which a SOF is volatilizable and a second temperature at which soot is burnable, an output changing ratio calculation unit to calculate a ratio between a first output value at the first temperature and a second output value as the maximum output upon heating to the second temperature, and a particle number calculation unit to estimate the average particle diameter of the particulate matter from a value corrected based on the temperature of the sensor unit at the second output value to calculate the number of particles.

公开(公告)号：US09431775B2

公开(公告)日：2016-08-30

申请号：US14465447

申请日：2014-08-21

Applicant: DENSO CORPORATION

Inventor： Masahiro Yamamoto ,  Hideyuki Kato

IPC: H01K1/00 ,  H01R13/66 ,  H01R43/20 ,  H01R43/26 ,  G01N27/406

CPC classification number: H01R13/6683 ,  G01N27/4062 ,  H01R13/6658 ,  H01R43/205 ,  H01R43/26 ,  Y10T29/49208

Abstract: A connector with built-in electronic circuit board includes an electronic circuit board for a sensor, the electronic circuit board including a first connection terminal, an inner case housing the electronic circuit board, and an outer case having a chamber housing the inner case. The connector further includes a second connection terminal extending from inside the chamber to outside the outer case, a third connection terminal disposed in the chamber, and a cable connected to the sensor at one end thereof at outside the outer case and connected to the third connection terminal at the other end thereof. The inner case is sealed by resin in a state of the first connection terminal being exposed. The first connection terminal is connected to the second and third connection terminals. The chamber is closed by a lid.

Abstract translation: 具有内置电子电路板的连接器包括用于传感器的电子电路板，所述电子电路板包括第一连接端子，容纳电子电路板的内壳体和具有容纳内壳体的腔室的外壳体。 所述连接器还包括从所述室内部延伸到所述外壳外部的第二连接端子，设置在所述室中的第三连接端子，以及连接到所述传感器的电缆的一端处于外壳外部并连接到所述第三连接 端子的另一端。 在暴露第一连接端子的状态下，内壳由树脂密封。 第一连接端子连接到第二和第三连接端子。 房间被盖子封闭。

公开(公告)号：US12235395B2

公开(公告)日：2025-02-25

申请号：US17190809

申请日：2021-03-03

Applicant: DENSO CORPORATION

Inventor： Masahiro Yamamoto

IPC: G01S7/497 ,  G01S13/931 ,  H05B3/84

Abstract: A distance measuring device is configured to emit a transmitted wave and detect a reflected wave from an object irradiated with the transmitted wave to measure a distance to the object. At least one of the transmitted wave and the reflected wave is transmitted through a transmission window. A heater is configured to heat the transmission window from an inside of the distance measuring device. A control unit is configured to control energization of the heater according to an inside air temperature which is an air temperature inside the distance measuring device and an outside air temperature which is an air temperature outside the distance measuring device.

公开(公告)号：US11892422B2

公开(公告)日：2024-02-06

申请号：US17265495

申请日：2019-08-09

Applicant: IBIDEN CO., LTD. ,  DENSO CORPORATION

Inventor： Yasutaka Ito ,  Tomoyoshi Nakamura ,  Takeshi Ushida ,  Takehito Kimata ,  Masahiro Yamamoto

IPC: G01N27/16 ,  G01N15/06 ,  G01N15/00

CPC classification number: G01N27/16 ,  G01N15/0606 ,  G01N15/0656 ,  G01N2015/0046

Abstract: A particulate-matter detecting sensor including an insulating substrate which has a detecting face, detecting conductors formed in the insulating substrate, and a heating section formed on the insulating substrate. Each detecting conductor includes a detecting electrode part, a terminal part, and a connecting part. A portion of the detecting conductor is constituted of a noble metal conductor mainly formed of at least one noble metal selected from Pt, Au, Pd, Rh and Ir. At least a portion of the connecting part is formed of a low expansion conductor mainly formed of a low expansion coefficient metal having linear expansion coefficient lower than that of the noble metal. Both conductors are joined at an overlapping part at which the noble metal conductor and the low expansion conductor are partly overlapped with each other on an insulating layer forming the insulating substrate in a normal line direction of the insulating layer.

公开(公告)号：US11283438B2

公开(公告)日：2022-03-22

申请号：US17224749

申请日：2021-04-07

Applicant: DENSO CORPORATION

Inventor： Hironori Akiyama ,  Akimasa Niwa ,  Masahiro Yamamoto

IPC: H03K3/00 ,  H03K17/00 ,  H03K17/082 ,  H03K17/16 ,  H02M1/08

Abstract: A gate drive apparatus includes a driver, a peak voltage detector and a drive capability controller. The driver drives a gate of a first switching element as one of two switching elements respectively in an upper arm and a lower arm of a half-bridge circuit. The peak voltage detector detects a peak voltage at a second switching element in a situation where the first switching element is turned on. The drive capability controller calculates a value of drive capability when the driver turns on the first switching element, in a condition that the peak voltage at the second switching element does not exceed a tolerance value of a voltage at the second switching element according to a specification of the second switching element, and modifies the drive capability when the driver turns on the first switching element, based on a calculated result of the value of the drive capability.

公开(公告)号：US10648381B2

公开(公告)日：2020-05-12

申请号：US15769794

申请日：2016-10-21

Applicant: DENSO CORPORATION

Inventor： Masayuki Tamura ,  Takashi Araki ,  Masahiro Yamamoto ,  Go Miyagawa ,  Manabu Yoshidome ,  Masato Katsuno ,  Toshihiro Sakawa

IPC: F01N3/023 ,  G01N27/04 ,  G01N15/06 ,  F01N3/00 ,  F02D41/14

Abstract: A particulate matter detecting device includes: an element unit on which particulate matter contained in exhaust gas from an internal combustion engine is deposited; a heater that heats the element unit; a detecting unit that detects the amount of particulate matter on the basis of electrical characteristics of the element unit; and a control unit that controls the operation of the heater. For a predetermined period that does not include a period in which the particulate matter is deposited on the element unit, the control unit operates the heater using a predetermined amount of control set in advance such that the temperature of the element unit is higher than the temperature of the exhaust gas and lower than a predetermined temperature at which the element unit is thermally degraded.

公开(公告)号：US10539493B2

公开(公告)日：2020-01-21

申请号：US15657503

申请日：2017-07-24

Applicant: DENSO CORPORATION

Inventor： Hironobu Shimokawa ,  Kazuhiko Koike ,  Masahiro Yamamoto ,  Go Miyagawa

IPC: G01N15/06 ,  G01M15/10 ,  G01N15/00

Abstract: The particulate matter detection sensor includes a conductive part, and the pair of electrodes that are arranged at specified spacing so as to face each other. The conductive part is formed into a plate shape using a conductive material having electrical resistivity that is higher than particulate matter. One major surface of the conductive part functions as an accumulation surface on which particulate matter accumulates. The pair of electrodes are formed on this accumulation surface.