Operational design domain decision apparatus

Patent metadata

Field	Value
Publication number	US-10414397-B2
Application number	US-201815945332-A
Country	US
Kind code	B2
Filing date	Apr 4, 2018
Priority date	Apr 6, 2017
Publication date	Sep 17, 2019
Grant date	Sep 17, 2019

Abstract

An operational design domain decision apparatus includes: a position estimation unit configured to estimate a vehicle position; a traffic map database in which a restriction related to a vehicle speed and a position are associated with each other; a rule acquisition unit configured to acquire the restriction; a required value calculation unit configured to calculate a required detection distance at which it is necessary for an object detection sensor equipped in the vehicle to have detected a moving object for execution of a predetermined automatic driving; a distance measurement unit configured to calculate a detectable distance based on a detection result of the object detection sensor; and a determination unit configured to determine that the automatic driving system is in the operational design domain, when the detectable distance is equal to or more than the required detection distance.

First claim

What is claimed is:

1. An operational design domain decision apparatus comprising:
a traffic map database in which a restriction related to a vehicle speed and a position corresponding to the restriction are associated with each other; and
an electronic control unit configured to:
estimate a vehicle position of a vehicle;
acquire the restriction from the traffic map database based on the vehicle position;
calculate, based on the restriction, a required detection distance at which it is necessary for an object detection sensor equipped in the vehicle to have detected a moving object for execution of a predetermined automatic driving of the vehicle, the object detection sensor being configured to detect the moving object;
create a required detection distance map in which the vehicle position and the required detection distance are associated with each other, a domain of the required detection distance map database being included in a domain of the traffic map database;
calculate a detectable distance based on a detection result of the object detection sensor, the detectable distance being a distance within which the moving object is detectable by the object detection sensor;
determine that an automatic driving system executing the predetermined automatic driving of the vehicle is in the operational design domain, when the detectable distance is equal to or more than the required detection distance; and
execute the predetermined automatic driving based on a result of a decision whether the automatic driving system is in the operational design domain, the operational design domain being a domain in which the automatic driving system operates as designed.

2. The operational design domain decision apparatus according to claim 1 , wherein the electronic control unit is configured to calculate the required detection distance, by assuming that the vehicle and the moving object travel at a highest speed within the restriction.

3. The operational design domain decision apparatus according to claim 2 , wherein the electronic control unit is configured to re-calculate, in a case where the electronic control unit determines that the automatic driving system is not in the operational design domain, the required detection distance after the electronic control unit decreases an upper limit speed of the vehicle.

4. The operational design domain decision apparatus according to claim 1 , wherein the moving object is an object traveling on a road on which the vehicle travels.

5. The operational design domain decision apparatus according to claim 1 , wherein the electronic control unit is configured to calculate the required detection distance, by calculating, based on the restriction, a first required detection distance and a second required detection distance, and selecting one of the first required detection distance and the second required detection distance.

6. An operational design domain decision apparatus comprising:
a required detection distance map database in which a required detection distance and a position corresponding to the required detection distance are associated with each other, the required detection distance being a distance at which it is necessary for an object detection sensor equipped in the vehicle to have detected a moving object for execution of a predetermined automatic driving of a vehicle, the object detection sensor being configured to detect the moving object, a domain of the required detection distance map database being included in a domain of a traffic map database; and
an electronic control unit configured to:
estimate a vehicle position of the vehicle;
acquire the required detection distance from the required detection distance map database based on the vehicle position;
calculate a detectable distance based on a detection result of the object detection sensor, the detectable distance being a distance within which the moving object is detectable by the object detection sensor;
determine that an automatic driving system executing the predetermined automatic driving of the vehicle is in the operational design domain, when the detectable distance is equal to or more than the required detection distance; and
execute the predetermined automatic driving based on a result of a decision whether the automatic driving system is in the operational design domain, the operational design domain being a domain in which the automatic driving system operates as designed.

7. The operational design domain decision apparatus according to claim 6 , wherein the moving object is an object traveling on a road on which the vehicle travels.

8. The operational design domain decision apparatus according to claim 2 , wherein the electronic control unit is configured to calculate the required detection distance by correcting the restriction in consideration of a computing time of the automatic driving system.

Assignees

• Toyota Motor Co Ltd

Inventors

• Kindo Toshiki

Classifications

• B60W2554/801

  Lateral distance · CPC title

• B60W2555/60

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

• B60W2554/00

  Input parameters relating to objects · CPC title

• B60W2754/30

  Longitudinal distance · CPC title

• B60W50/0097 Primary

  Predicting future conditions · CPC title