公开(公告)号：US20230003854A1

公开(公告)日：2023-01-05

申请号：US17930667

申请日：2022-09-08

Applicant: DENSO CORPORATION

Inventor： Masahiro YAMAMOTO ,  Tetsumasa KAWAGUCHI

IPC: G01S7/497 ,  G01S7/481 ,  G01S17/08 ,  G01S17/931

Abstract: A distance measurement apparatus measures a distance to an object by irradiating emission light and detecting reflected light from the object onto which the emission light is irradiated. This apparatus includes a transmission window, a heater wire, and a flexible substrate that is provided in the transmission window. The flexible substrate includes: a surface-mounted-type electronic component; a land to which an electrode of the electronic component is electrically connected, and a conductive adhesive that is formed on the land and adheres the electrode of the electronic component and the land. When a longitudinal direction of a surface of the electronic component that opposes the land is a reference direction, a length along the reference direction of a contact surface between the land and the conductive adhesive is equal to or greater than twice a length along the reference direction of a mounting surface of the electrode of the electronic component.

公开(公告)号：US20210373134A1

公开(公告)日：2021-12-02

申请号：US17399866

申请日：2021-08-11

Applicant: DENSO CORPORATION

Inventor： Masahiro YAMAMOTO

IPC: G01S7/481 ,  G01S17/08 ,  G01S17/931

Abstract: A ranging apparatus works to measure a distance to an object and includes an emitter, a receiver, a housing, an optical window, a heater, an outlet hole formed in the housing, a power conductor, and a guide. The housing has the emitter and the receiver disposed therein and also has the optical window formed therein. The heater supplies heat to the optical window. The power conductor connects with the heater and extends outside the housing through the outlet hole. The guide is disposed in the housing and works to guide movement of the power conductor toward the outlet hole. The guide is equipped with a cover which covers at least a portion of the power conductor and is less able to reflect light emitted from the emitter and light reflected from the object than the power conductor.

公开(公告)号：US20210258004A1

公开(公告)日：2021-08-19

申请号：US17224749

申请日：2021-04-07

Applicant: DENSO CORPORATION

Inventor： Hironori AKIYAMA ,  Akimasa NIWA ,  Masahiro YAMAMOTO

IPC: H03K17/082 ,  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：US20210036697A1

公开(公告)日：2021-02-04

申请号：US17072724

申请日：2020-10-16

Applicant: DENSO CORPORATION

Inventor： Masahiro YAMAMOTO ,  Akimasa NIWA

IPC: H03K17/082

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：US20190107475A1

公开(公告)日：2019-04-11

申请号：US16086391

申请日：2017-02-09

Applicant: DENSO CORPORATION

Inventor： Kazuhiko KOIKE ,  Masahiro YAMAMOTO

IPC: G01N15/06

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：US20180195933A1

公开(公告)日：2018-07-12

申请号：US15740507

申请日：2016-06-08

Applicant: DENSO CORPORATION

Inventor： Go MIYAGAWA ,  Kouji ANDOH ,  Masayuki TAMURA ,  Hirokatsu IMAGAWA ,  Takao MISHIMA ,  Hideki YAMADA ,  Masahiro YAMAMOTO

IPC: G01M15/10 ,  G01N15/06 ,  G01N27/04 ,  F01N11/00

CPC classification number: G01M15/102 ,  F01N11/002 ,  G01M15/10 ,  G01N15/0606 ,  G01N15/0656 ,  G01N27/04 ,  G01N2015/0046

Abstract: A particulate matter sensor and a particulate matter sensing system using such a sensor are provided which are capable of being produced at decreased cost and accurately measuring the temperature of a heater. The particulate matter sensor includes a deposition portion on which particulate matter contained in exhaust gas is accumulated, a pair of electrodes which are disposed on the deposition portion and separate from each other, a heater which heats the deposition portion, and a pair of heater leads which form a path through which electrical current is delivered to the heater. A sensing line is connected to at least one of the heater leads to measure a resistance of the heater lead.

公开(公告)号：US20220003848A1

公开(公告)日：2022-01-06

申请号：US17479445

申请日：2021-09-20

Applicant: DENSO CORPORATION

Inventor： Masahiro YAMAMOTO

IPC: G01S7/481 ,  G01S17/931

Abstract: A heater is disposed on an inner surface or an outer surface of a transmission window to cover a transmission region where at least either the transmission waves or the reflected waves pass through and a circuit component is disposed on the inner surface or the outer surface of the transmission window, in a region other than a region where the heater is disposed.

公开(公告)号：US20210190924A1

公开(公告)日：2021-06-24

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：US20200348397A1

公开(公告)日：2020-11-05

申请号：US16936379

申请日：2020-07-22

Applicant: DENSO CORPORATION

Inventor： Masahiro YAMAMOTO

IPC: G01S7/481

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：US20180313243A1

公开(公告)日：2018-11-01

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 ,  G01N15/06 ,  G01N27/04 ,  F02D41/14

CPC classification number: F01N3/00 ,  F01N3/023 ,  G01N15/06 ,  G01N27/04

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.