公开(公告)号：US20210163014A1

公开(公告)日：2021-06-03

申请号：US16939381

申请日：2020-07-27

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yosuke KIMURA ,  Takeo MORIAI ,  Masaya FUJIMORI ,  Tatsuya OBUCHI

IPC: B60W40/06 ,  B60W50/14

Abstract: A road surface damage detection device is configured to calculate, for each of road sections, a maximum variation rate that is a maximum value of a variation amount of a wheel speed per unit time in each of vehicles. Next, the device is configured to periodically select, for each of the road sections, a maximum value from the maximum variation rate of each of the vehicles in a first prescribed period, set the selected maximum value as a section maximum variation rate, and determine whether or not the road surface damage has occurred by comparing the section maximum variation rate with a threshold. The device sets the threshold, for each of the road sections, based on a behavior of each of the vehicles in a second prescribed period or based on the behavior of each of the vehicles when a predetermined condition is satisfied.

公开(公告)号：US20240185404A1

公开(公告)日：2024-06-06

申请号：US18387940

申请日：2023-11-08

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Shusuke YAMAMOTO ,  Chikara OKAZAKI ,  Kohta WATATSU ,  Hideyuki TANAKA ,  Shinya MURASE ,  Tatsuya OBUCHI ,  Yuki TATSUMOTO

IPC: G06T7/00 ,  G06V20/10 ,  G06V20/13

CPC classification number: G06T7/0002 ,  G06V20/13 ,  G06V20/182 ,  G06T2207/10032 ,  G06T2207/30181 ,  G06T2207/30236 ,  G06V2201/08

Abstract: An information processing device includes a satellite image acquisition section, a vehicle extraction section, an analysis section, and a prediction section. The satellite image acquisition section acquires a satellite image. The vehicle extraction section extracts large-sized vehicles, which have a size equal to or greater than a predetermined value, from the satellite image acquired by the satellite image acquisition section. The analysis section detects, in the satellite image, a road on which travel of the large-sized vehicles is equal to or greater than a predetermined value, and analyzes vehicle data for the detected road. The prediction section predicts a state of deterioration of a surface of the road based on an analysis result by the analysis section.

公开(公告)号：US20210064891A1

公开(公告)日：2021-03-04

申请号：US17002226

申请日：2020-08-25

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yosuke KIMURA ,  Tatsuya OBUCHI ,  Masaya FUJIMORI ,  Takeo MORIAI ,  Hiroshi MAJIMA

IPC: G06K9/00 ,  G06F3/14 ,  G01C21/36

Abstract: An object is to enable a user to more readily design a maintenance plan according to the type of an abnormality of road. A first abnormal section that is a road section having a road condition of a first abnormality and a second abnormal section that is a road section having the road condition of a second abnormality that is different from the first abnormality are detected, based on vehicle information from a plurality of vehicles. Out of roads in a displayed map, the first abnormal section is provided with the state information in a first display mode, and the second abnormal section is provided with the state information in a second display mode that is different from the first display mode. The first abnormal section and the second abnormal section provided with the state information are displayed in a display device.

公开(公告)号：US20210165012A1

公开(公告)日：2021-06-03

申请号：US16927289

申请日：2020-07-13

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yosuke KIMURA ,  Takeo MORIAI ,  Masaya FUJIMORI ,  Tatsuya OBUCHI

IPC: G01P3/44

Abstract: A road surface damage detection device is configured to calculate, for each of road sections, a maximum variation rate that is a maximum value of a variation amount of a wheel speed per unit time in each of vehicles. The device is configured to periodically select, for each of the road sections, a maximum value from the maximum variation rate of each of the vehicles in a prescribed period, set the selected maximum value as a section maximum variation rate, and determine whether or not the road surface damage has occurred by comparing a determination target value with a positive threshold, the determination target value being obtained by subtracting a comparison value, based on at least one of the section maximum variation rates set before last time, from the section maximum variation rate that is set latest.

公开(公告)号：US20230391342A1

公开(公告)日：2023-12-07

申请号：US18295850

申请日：2023-04-05

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yosuke KIMURA ,  Tatsuya OBUCHI

IPC: B60W40/06

CPC classification number: B60W40/06 ,  B60W2400/00 ,  B60W2552/35 ,  B60W2556/65

Abstract: The calculation server aggregates the fluctuation per unit time of the physical quantity indicating the behavior of each of the plurality of detected vehicles, the plurality of maximum values by each of the plurality of vehicles in the first predetermined period, the section average fluctuation which is an average value for the plurality of vehicles, and each of the section maximum fluctuation which is a maximum value of the plurality of maximum values in the first predetermined period in a second predetermined period longer than the first predetermined period, and detects the road surface damage location based on the result of removing the noise component from the aggregated result.