公开(公告)号：US20190212216A1

公开(公告)日：2019-07-11

申请号：US16232643

申请日：2018-12-26

Applicant: DENSO CORPORATION

Inventor： Ken TANAKA ,  Shingo SHIMIZU ,  Toshiro SUZUKI ,  Satoru JINNO ,  Shigetoshi FUKAYA

IPC: G01L3/10

Abstract: A torque detector detects a torsional torque between a first shaft and a second shaft based on a torsional displacement of an elastic member coaxially connecting the first shaft and the second shaft. The torque detector includes a magnetic flux generation unit and a magnetic sensor. The magnetic flux generation unit rotates with rotation of the first shaft and includes a first pole and a second pole into and out of which lines of magnetic force enter and exit. The magnetic sensor rotates with rotation of the second shaft and includes a detection surface for detecting a magnetic flux or a magnetic flux density. The first pole and the second pole are arranged to face each other across the magnetic sensor.

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：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：US20190383679A1

公开(公告)日：2019-12-19

申请号：US16550913

申请日：2019-08-26

Applicant: SOKEN, INC. ,  DENSO CORPORATION

Inventor： Ken TANAKA ,  Shingo SHIMIZU ,  Shigetoshi FUKAYA ,  Satoru JINNO ,  Toshiro SUZUKI

IPC: G01L3/10 ,  G01R33/00 ,  G01R33/02

Abstract: A torque sensor includes: a torsion bar coaxially connecting a first shaft and a second shaft; a multipole magnet; a pair of magnetic yokes; and a magnetic sensor capable of detecting a density of magnetic flux formed by the pair of the magnetic yokes and having an inner magnetosensitive surface facing inward in a radial direction and an outer magnetosensitive surface facing outward in the radial direction when viewed along a central axis of the torsion bar. The torque sensor includes: a magnetic flux guiding member capable of magnetically coupling the magnetic yoke and the outer magnetosensitive surface of the magnetic sensor; and a water blocking portion capable of housing the magnetic sensor and the magnetic flux guiding member to restrict the magnetic sensor from coming into contact with water.