Systems and methods for adaptive sensor angle positioning in vehicles

Patent metadata

Field	Value
Publication number	US-9835719-B2
Application number	US-201615131540-A
Country	US
Kind code	B2
Filing date	Apr 18, 2016
Priority date	Apr 18, 2016
Publication date	Dec 5, 2017
Grant date	Dec 5, 2017

Abstract

A system and method are provided and include a subject vehicle having a sensor that senses information about an environment of the subject vehicle. An actuator rotates the sensor according to a commanded angle. A controller determines a position and a trajectory path of the subject vehicle, determines an adaptive point along the determined trajectory path based on the position, and generates the commanded angle for the actuator to rotate the sensor towards the adaptive point.

First claim

What is claimed is:

1. A system comprising:
a sensor that senses information about an environment of a subject vehicle;
an actuator that rotates the sensor according to a commanded angle;
a controller that determines a position and a trajectory path of the subject vehicle, that determines an adaptive point along the determined trajectory path based on the position, and that generates the commanded angle for the actuator to rotate the sensor towards the adaptive point; wherein
the position determined by the controller includes coordinates of a location of the subject vehicle and a direction of the subject vehicle, and wherein the controller stores a preset distance, determines a preset point located the preset distance from the subject vehicle in the direction of the subject vehicle, and determines the adaptive point as a closest point to the preset point along the determined trajectory path.

2. The system of claim 1 , wherein the sensor includes at least one of a camera, a Lidar sensor, a radar sensor, and an ultrasonic sensor.

3. The system of claim 1 , further comprising a global positioning system, wherein the controller determines the position of the subject vehicle based on data from the global positioning system.

4. The system of claim 1 , further comprising a vehicle speed sensor that determines a speed of the subject vehicle, wherein the controller determines the trajectory path of the subject vehicle based on the speed of the subject vehicle.

5. The system of claim 1 , wherein the controller generates a map of an area surrounding the subject vehicle based on data from the sensor and determines the position of the subject vehicle based on the map of the area surrounding the subject vehicle.

6. The system of claim 1 , wherein the controller receives feedback data from the sensor, determines a feedback angle of the sensor based on the feedback data, determines an angle error based on the commanded angle and the feedback angle, and adjusts the commanded angle based on the angle error.

7. The system of claim 1 , wherein the controller controls at least one of a steering system, a throttle system, a transmission system, and a braking system of the subject vehicle based on data from the sensor.

8. The system of claim 1 , wherein the controller generates an alert based on the information sensed by the sensor about the environment of the subject vehicle.

9. A method comprising:
sensing, with a sensor, information about an environment of a subject vehicle;
determining, with a controller, a position and a trajectory path of the subject vehicle;
determining, with the controller, an adaptive point along the determined trajectory path based on the position;
generating, with the controller, a commanded angle for an actuator of the sensor to rotate the sensor towards the adaptive point;
rotating, with the actuator, the sensor according to the commanded angle; wherein
the position determined by the controller includes coordinates of a location of the subject vehicle and a direction of the subject vehicle, the method further comprising:
storing, with the controller, a preset distance;
determining, with the controller, a preset point located the preset distance from the subject vehicle in the direction of the subject vehicle; and
determining, with the controller, the adaptive point as a closest point to the preset point along the determined trajectory path.

10. The method of claim 9 , wherein the sensor includes at least one of a camera, a Lidar sensor, a radar sensor, and an ultrasonic sensor.

11. The method of claim 9 , further comprising determining, with the controller, the position of the subject vehicle based on data from a global positioning system of the subject vehicle.

12. The method of claim 9 , further comprising determining, with the controller, the trajectory path of the subject vehicle based on a speed of the subject vehicle as sensed by a vehicle speed sensor that determines the speed of the subject vehicle.

13. The method of claim 9 , further comprising generating, with the controller, a map of an area surrounding the subject vehicle based on data from the sensor and determining, with the controller, the position of the subject vehicle based on the map of the area surrounding the subject vehicle.

14. The method of claim 9 , further comprising:
receiving, with the controller, feedback data from the sensor;
determining, with the controller, a feedback angle of the sensor based on the feedback data;
determining, with the controller, an angle error based on the commanded angle and the feedback angle; and
adjusting, with the controller, the commanded angle based on the angle error.

15. The method of claim 9 , further comprising controller, with the controller, at least one of a steering system, a throttle system, a transmission system, and a braking system of the subject vehicle based on data from the sensor.

16. The method of claim 9 , further comprising generating, with the controller, an alert based on the information sensed by the sensor about the environment of the subject vehicle.

Assignees

• Denso Int America Inc

Inventors

• Nguyen Trong Duy

Classifications

• B60T8/171

  Detecting parameters used in the regulation; Measuring values used in the regulation · CPC title

• G01S15/89

  for mapping or imaging · CPC title

• G01S7/52004

  Means for monitoring or calibrating (short-range imaging G01S7/5205) · CPC title

• B60T2210/32

  Vehicle surroundings · CPC title

• G01S15/02

  using reflection of acoustic waves (G01S15/66 takes precedence) · CPC title