Assistance control system

Patent metadata

Field	Value
Publication number	US-11255681-B2
Application number	US-201916516824-A
Country	US
Kind code	B2
Filing date	Jul 19, 2019
Priority date	Oct 12, 2018
Publication date	Feb 22, 2022
Grant date	Feb 22, 2022

Abstract

An assistance control system performs assistance control for causing a moving object to move to a destination based on map information. The assistance control system includes an electronic control unit. The electronic control unit is configured to generate or update the map information based on input from a sensor mounted on the moving object, acquire a plurality of route candidates to the destination, evaluate certainty of the map information for each location or each section, and calculate a map information evaluation value, evaluate accuracy of the assistance control in the acquired route candidates based on the calculated map information evaluation value, and present a route candidate having the highest priority among the route candidates to an occupant of the moving object, or control the moving object along the route candidate having the highest priority.

First claim

What is claimed is:

1. An assistance control system including a map database storing map information, and performing assistance control for causing a moving object to move to a destination based on the map information, the assistance control system comprising an electronic control unit configured to
generate or update the map information based on input from a sensor mounted on the moving object,
acquire a plurality of route candidates to the destination,
evaluate certainty of the map information for each location or each section, and calculate a map information evaluation value,
evaluate accuracy of the assistance control in the acquired route candidates based on the calculated map information evaluation value,
set a priority of a route candidate, which is evaluated to have a lower accuracy of the assistance control among the route candidates, to be higher in priority than priorities of other route candidates, and
present a route candidate having the highest priority among the route candidates to an occupant of the moving object, or control the moving object along the route candidate having the highest priority.

2. An assistance control system including a map database storing map information, and performing assistance control for causing a moving object to move to a destination based on the map information, the assistance control system comprising an electronic control unit configured to:
generate or update the map information based on input from a sensor mounted on the moving object,
acquire a plurality of route candidates to the destination,
evaluate certainty of the map information for each location or each section, and calculate a map information evaluation value,
evaluate accuracy of the assistance control in the acquired route candidates based on the calculated map information evaluation value,
set a priority of a route candidate evaluated lower among the route candidates, to be higher than priorities of other route candidates, and
present a route candidate having the highest priority among the route candidates to an occupant of the moving object, or control the moving object along the route candidate having the highest priority,
wherein the electronic control unit is configured to calculate a distance of a section in which the calculated map information evaluation value is smaller than a predetermined threshold value in each of the route candidates, and increase a priority of a route candidate having the longer distance compared with a priority of a route candidate having the shorter distance among the route candidates.

3. An assistance control system including a map database storing map information, and performing assistance control for causing a moving object to move to a destination based on the map information, the assistance control system comprising an electronic control unit configured to:
generate or update the map information based on input from a sensor mounted on the moving object,
acquire a plurality of route candidates to the destination,
evaluate certainty of the map information for each location or each section, and calculate a map information evaluation value,
evaluate accuracy of the assistance control in the acquired route candidates based on the calculated map information evaluation value,
set a priority of a route candidate evaluated lower among the route candidates, to be higher than priorities of other route candidates, and
present a route candidate having the highest priority among the route candidates to an occupant of the moving object, or control the moving object along the route candidate having the highest priority,
wherein the electronic control unit is configured to update the map information evaluation value due to movement of the moving object along the route candidate having the highest priority, and reduce the priority of the route candidate having the highest priority based on a change amount of the map information evaluation value within a predetermined time.

4. The assistance control system according to claim 3 , wherein, when the number of times of the moving object having moved along the route candidate having the highest priority is equal to or larger than a predetermined number of times, the electronic control unit is configured to determine whether the change amount between the map information evaluation value before the moving object moves and the map information evaluation value after the moving object moves is equal to or smaller than a first predetermined amount, and reduce the priority of the route candidate having the highest priority when the electronic control unit determines that the change amount is equal to or smaller than the first predetermined amount.

5. The assistance control system according to claim 4 , wherein the electronic control unit is configured to determine whether the change amount is equal to or larger than a second predetermined amount larger than the first predetermined amount, and reduce the priority of the route candidate having the highest priority when the electronic control unit determines that the change amount is equal to or larger than the second predetermined amount.

Assignees

• Toyota Motor Co Ltd

Inventors

• Sakaguchi Eiji
• Takagi Yasuhiro
• Kamata Nobuhide
• Kawanai Taichi

Classifications

• G01C21/3896

  Transmission of map data from central databases · CPC title

• G01C21/3848

  Data obtained from both position sensors and additional sensors · CPC title

• G08G1/096844

  where the complete route is dynamically recomputed based on new data · CPC title

• G08G1/0145

  for active traffic flow control · CPC title

• G01C21/367

  Details, e.g. road map scale, orientation, zooming, illumination, level of detail, scrolling of road map or positioning of current position marker · CPC title