Vehicle control device

Patent metadata

Field	Value
Publication number	US-2022227387-A1
Application number	US-202017609462-A
Country	US
Kind code	A1
Filing date	Jun 19, 2020
Priority date	Jul 3, 2019
Publication date	Jul 21, 2022
Grant date	—

Abstract

A vehicle control device includes a processor, a memory and a sensor that acquires surrounding environment information of the vehicle, a host vehicle position estimation unit that estimates the route of the vehicle, a surrounding environment storage unit that stores the surrounding environment information and the route estimated by the host vehicle position estimation unit in association with each other, a vehicle-speed threshold determination unit that sets a vehicle-speed threshold value when the surrounding environment storage unit stores the surrounding environment information and the route in association with each other, and determines whether or not a current vehicle speed exceeds the vehicle-speed threshold value when the surrounding environment storage unit stores the surrounding environment information and the route, and a warning unit that performs a notification of an excess of the vehicle speed when the vehicle-speed threshold determination unit determines that the vehicle speed exceeds the vehicle-speed threshold value.

First claim

1 . A vehicle control device that includes a processor and a memory and controls traveling of a vehicle, the vehicle control device comprising:
a sensor that acquires surrounding environment information of the vehicle; a host vehicle position estimation unit that estimates a traveling route of the vehicle; a surrounding environment storage unit that stores the surrounding environment information acquired by the sensor and the traveling route estimated by the host vehicle position estimation unit in association with each other; a vehicle-speed threshold determination unit that sets a vehicle-speed threshold value when the surrounding environment storage unit stores the surrounding environment information and the traveling route in association with each other, and determines whether or not a current vehicle speed exceeds the vehicle-speed threshold value when the surrounding environment storage unit stores the surrounding environment information and the traveling route; and a warning unit that performs a notification of an excess of the vehicle speed when the vehicle-speed threshold determination unit determines that the vehicle speed exceeds the vehicle-speed threshold value.

2 . The vehicle control device according to claim 1 , further comprising:
a vehicle control unit that performs autonomous driving based on the traveling route and the surrounding environment information stored in the surrounding environment storage unit, wherein the vehicle control unit sets a target vehicle speed which is equal to or smaller than the vehicle-speed threshold value.

3 . The vehicle control device according to claim 1 , further comprising:
an input unit that receives a start position at which storing of the surrounding environment information and the traveling route is started, wherein the surrounding environment storage unit stores the surrounding environment information and the traveling route in association with each other from the start position to a target position set in advance.

4 . The vehicle control device according to claim 2 , further comprising:
an input unit that receives a start position at which storing of surrounding environment information and traveling route is started, wherein the surrounding environment storage unit stores the surrounding environment information and the traveling route in association with each other from the start position to a target position set in advance, and the vehicle control unit performs autonomous driving in accordance with the surrounding environment information and the traveling route from the start position to the target position, which are stored in the surrounding environment storage unit, when a command of the autonomous driving is received from the input unit.

5 . The vehicle control device according to claim 1 , wherein the surrounding environment storage unit stops storing of the surrounding environment information and the traveling route when the vehicle has traveled at a vehicle speed exceeding the vehicle-speed threshold value for a predetermined time or longer.

6 . The vehicle control device according to claim 1 , wherein the host vehicle position estimation unit detects a number of revolutions of a wheel of the vehicle, and estimates a position of the vehicle from the number of revolutions.

7 . The vehicle control device according to claim 1 , wherein the vehicle-speed threshold determination unit sets the vehicle-speed threshold value as an upper limit value of a vehicle speed allowing accuracy of estimating a position of the vehicle to be secured.

8 . The vehicle control device according to claim 7 , wherein the vehicle-speed threshold value is set to be equal to or more than a lower limit value of the vehicle speed allowing the accuracy of estimating the position of the vehicle to be secured.

9 . The vehicle control device according to claim 2 , wherein the vehicle control unit refers to road map information to acquire a speed limit from road type information of traveling road, and set a target vehicle speed to be equal to or smaller than the speed limit.

10 . The vehicle control device according to claim 2 , wherein, when the surrounding environment information includes a sign indicating a speed limit, the vehicle control unit sets the target vehicle speed to be equal to or smaller than a value of the sign.

11 . The vehicle control device according to claim 2 , wherein the vehicle control unit changes the target vehicle speed in accordance with a relation between a position of the vehicle estimated by the host vehicle position estimation unit and a target position set in advance.

12 . The vehicle control device according to claim 2 , wherein the host vehicle position estimation unit estimates a position of the vehicle by using information of a satellite positioning system, and changes a target vehicle speed in accordance with a distance to a target position set in advance.

13 . The vehicle control device according to claim 1 , wherein the surrounding environment storage unit stores the surrounding environment information and the traveling route in an external device.

14 . The vehicle control device according to claim 2 , wherein
the surrounding environment storage unit stores the surrounding environment information and the traveling route in an external device, and the vehicle control unit acquires the traveling route and the surrounding environment information stored in the external device, and performs the autonomous driving.

Assignees

• Hitachi Astemo Ltd

Inventors

• Ozaki Koichiro
• Seimiya Masashi
• Sakaguchi Tomoyasu
• FUKASAWA Yoshitaka

Classifications

• G01C21/28

  with correlation of data from several navigational instruments · CPC title

• B60W2555/60

  Traffic rules, e.g. speed limits or right of way · CPC title

• B60W2552/35

  Road bumpiness, e.g. potholes · CPC title

• B60W2510/186

  Status of parking brakes · CPC title

• B60W30/146

  Speed limiting · CPC title