公开(公告)号：US20230115115A1

公开(公告)日：2023-04-13

申请号：US18064018

申请日：2022-12-09

Applicant: DENSO CORPORATION

Inventor： Takashi OGAWA

IPC: G06V20/58 ,  B60W30/08

Abstract: An object recognition device mountable to a vehicle includes a tracking processing unit including a first association processing unit, a second association processing unit, and a vehicle likelihood calculation unit. The first association processing unit extracts, for each tracking target and based on a positional relationship, a provisionally associated cluster which is a cluster assumed to indicate the same target as the tracking target. The second association processing unit calculates a posterior confidence indicating a probability that when it is assumed that the provisionally associated cluster and the tracking target indicate the same target, the target is a vehicle, determines whether to perform association based on the calculated posterior confidence, and calculates the posterior confidence based on the posterior confidence calculated for the tracking target in the previous measurement cycle and on a cluster vehicle likelihood of the provisionally associated cluster calculated by the vehicle likelihood calculation unit.

公开(公告)号：US20240219521A1

公开(公告)日：2024-07-04

申请号：US18604161

申请日：2024-03-13

Applicant: DENSO CORPORATION

Inventor： Shingo SHIMIZU ,  Tetsuya KUSUMOTO ,  Masaki YONEDA ,  Takashi OGAWA

IPC: G01S7/41 ,  G01S13/931

CPC classification number: G01S7/412 ,  G01S13/931 ,  G01S2013/9323

Abstract: An object recognition device according to one aspect of the present disclosure includes a target sensor, a tracking unit, a detection probability calculation unit, a presence probability calculation unit, and a recognition unit. The detection probability calculation unit is configured to calculate a detection probability of a target in the current process cycle, wherein the stronger the reflection intensity in the previous processing cycle, the higher is made the calculated detection probability. The presence probability calculation unit is configured to calculate the presence probability of the target with respect to the observed value of the reflection position in the current processing cycle, using the calculated detection probability. The recognition unit is configured to recognize a target being tracked as a target representing an object, in response to the presence probability being greater than or equal to a predetermined value.

公开(公告)号：US20230075000A1

公开(公告)日：2023-03-09

申请号：US18050323

申请日：2022-10-27

Applicant: DENSO CORPORATION

Inventor： Takashi OGAWA

IPC: G01S7/497 ,  G01S17/931

Abstract: An object recognition device includes a detection point acquisition unit that acquires detection points in a plurality of orientations by using a sensor and an object recognition unit that recognizes an object by using at least some of the detection points. The object recognition device includes an exclusion unit. The exclusion unit excludes the detection point that does not satisfy a stereoscopic point condition, the detection point the detection point number of which is a threshold value or smaller, and the detection point the discontinuity index of which is a threshold value or higher, from the detection points acquired by the detection point acquisition unit. The object recognition unit recognizes the object by using the detection point that is acquired by the detection point number calculation unit and has not been excluded by the exclusion unit.

公开(公告)号：US20180312037A1

公开(公告)日：2018-11-01

申请号：US15770344

申请日：2016-09-12

Applicant: DENSO CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yoshihiko UESUGI ,  Kazuya NISHIUMA ,  Takayuki KAMADA ,  Daisuke SETOGUCHI ,  Takashi OGAWA ,  Seiji TANAKA

IPC: B60H1/00 ,  F24F11/46 ,  B60R16/037

Abstract: An evaluation device includes a set temperature evaluation portion, an ecological driving evaluation portion, and a notification portion. The set temperature evaluation portion determines a set temperature evaluation value based on a set temperature that is a target temperature. The ecological driving evaluation portion is configured to determine an ecological driving evaluation value based on at least the set temperature evaluation value. The notification portion is configured to notify the occupant of the ecological driving evaluation value. The level of power saving rises with change of the set temperature evaluation value or the ecological driving evaluation value. When the set temperature is changed, and the change of the set temperature causes increase of the level of power saving without decrease in power consumption of the vehicular air conditioner, the set temperature evaluation portion changes the set temperature evaluation value in the one of positive and negative directions.

公开(公告)号：US20240069187A1

公开(公告)日：2024-02-29

申请号：US18505976

申请日：2023-11-09

Applicant: DENSO CORPORATION

Inventor： Tetsuya KUSUMOTO ,  Shingo SHIMIZU ,  Takashi OGAWA ,  Masaki YONEDA

IPC: G01S13/66

CPC classification number: G01S13/66

Abstract: An observation allocating section exclusively allocates an observation point to each existing tracker in accordance with a distance between observation information acquired by an information acquiring section and observation information indicated by a predictive distribution. A hypothesis generating section generates a hypothesis likelihood and a hypothesis distribution, for each target tracker and for each hypothesis belonging to a hypothesis group including a first hypothesis and a second hypothesis. The first hypothesis is a hypothesis that the observation point is a result of observation of a subject target. The second hypothesis is a hypothesis that the observation point is not a result of observation of the subject target. The hypothesis likelihood is the likelihood of the hypothesis. The hypothesis distribution is the state distribution updated on the assumption that the hypothesis is correct.

公开(公告)号：US20230417873A1

公开(公告)日：2023-12-28

申请号：US18463156

申请日：2023-09-07

Applicant: SOKEN, INC. ,  DENSO CORPORATION

Inventor： Tetsuya KUSUMOTO ,  Shingo SHIMIZU ,  Takashi OGAWA ,  Masaki YONEDA

IPC: G01S7/48 ,  G01S17/66 ,  G01S17/931

CPC classification number: G01S7/4802 ,  G01S17/66 ,  G01S17/931

Abstract: A positional information acquiring unit that acquires positional information in accordance with an object detection signal of the object sensor includes a first acquiring unit that acquires first observation information as positional information using a first threshold, and a second acquiring unit that acquires second observation information as positional information using a second threshold different from the first threshold. The object tracking unit is provided with a first tracking processing unit that executes a tracking process in accordance with the first observation information and a second tracking processing unit that executes the tracking process in accordance with the second observation information. Either one of the first tracking processing unit or the second tracking processing unit has anti-clutter characteristics higher than that of the other one. A state identifying unit identifies the state of the object based on a result of the tracking process executed by the tracking processing unit.

公开(公告)号：US20190229663A1

公开(公告)日：2019-07-25

申请号：US16254307

申请日：2019-01-22

Applicant: DENSO CORPORATION

Inventor： Takashi OGAWA ,  Masaki NISHIYAMA ,  Mitsuharu MATSUNO

IPC: H02P21/14 ,  H02P21/24

Abstract: In a MG control device, a standard voltage calculation part calculates a d-axis standard voltage Vd_std and a q-axis standard voltage Vq_std to be supplied to a MG. A first magnetic flux change amount estimation value calculation part calculates a first magnetic flux change amount estimation value Δϕ1 based on a deviation of a specific value from the q axis standard voltage Vq_std, where the specific value is obtained by multiplying a ratio (Vd_std/Vd_real) with a q-axis real voltage Vq_real, where Vd_real represents a d-axis real voltage. A second magnetic flux change amount estimation value calculation part calculates a second magnetic flux change amount estimation value Δϕ2 based on a deviation of the q-axis real voltage Vq_real from the q-axis standard voltage Vq_std. The calculation switching part selects one of Δϕ1 and Δϕ2 based on an operation state of the MG.

公开(公告)号：US20250138177A1

公开(公告)日：2025-05-01

申请号：US19005635

申请日：2024-12-30

Applicant: DENSO CORPORATION

Inventor： Masaki YONEDA ,  Takashi OGAWA

IPC: G01S13/72 ,  G01S13/931

Abstract: An object tracking device includes: an observation point extractor extracting, based on a state quantity of a target estimated during a previous cycle, an observation point obtained from the target during a current cycle, a prediction point generator generating, based on the state quantity of the target estimated during the previous cycle, a prediction point at a predicted position at which the observation point is expected, an aligner bringing the observation point obtained from the target during the current cycle and the prediction point generated by the prediction point generator into alignment by scan matching, and a residual calculator obtaining a correspondence point of the target at the predicted position corresponding to the observation point from the prediction point brought into alignment with the observation point obtained during the current cycle and calculating a residual between the observation point and the correspondence point.

公开(公告)号：US20190229661A1

公开(公告)日：2019-07-25

申请号：US16254281

申请日：2019-01-22

Applicant: DENSO CORPORATION

Inventor： Takashi OGAWA ,  Masaki NISHIYAMA ,  Mitsuharu MATSUNO

IPC: H02P21/10

Abstract: In a MG control device, a standard voltage calculation part calculates a d axis standard voltage and a q axis standard voltage in a standard state in which no demagnetization occurs in permanent magnets of a MG. A magnetic flux change amount estimation value calculation part calculates a basic magnetic flux change amount estimation value based on a deviation of a specific value from the q-axis standard voltage. This specific value is obtained by multiplying q axis real voltage with a ratio of the d axis standard voltage and the d axis real voltage. A magnetic flux change amount estimation value correction part adjusts a magnetic flux change amount estimation value by correcting the basic magnetic flux change amount estimation value relatively to a detection threshold value based on characteristic change of the MG in a demagnetization state of the permanent magnets of the MG.