Sensor cleaning system

Patent metadata

Field	Value
Publication number	US-11548481-B2
Application number	US-202016741244-A
Country	US
Kind code	B2
Filing date	Jan 13, 2020
Priority date	Jan 13, 2020
Publication date	Jan 10, 2023
Grant date	Jan 10, 2023

Abstract

A sensor lens cleaning system for a cylindrical sensor having a sensor lens surface includes an extended member having a first end coupled to the cylindrical sensor and a second end opposite the first end, a nozzle coupled to the second end of the extended member, an actuator coupled to the extended member and configured to control the extended member, and a controller in electronic communication with the actuator and configured to communicate an actuator control signal to the actuator. The nozzle generates an air stream directed at the sensor lens surface.

First claim

What is claimed is:

1. A sensor lens cleaning system comprising:
a cylindrical sensor couplable to a vehicle body, the cylindrical sensor having a top surface, a bottom surface opposite the top surface, and a sensor lens surface perpendicular to both of the top and bottom surfaces, the sensor lens surface extending around a periphery of the cylindrical sensor;
an extended member having a first end coupled to the cylindrical sensor and a second end opposite the first end;
a nozzle coupled to the second end of the extended member;
an actuator coupled to the extended member and configured to control the extended member; and
a controller in electronic communication with the actuator and configured to communicate an actuator control signal to the actuator;
wherein the nozzle generates an air stream directed at the sensor lens surface to remove debris from at least a portion of the sensor lens surface of the cylindrical sensor.

2. The sensor lens cleaning system of claim 1 , wherein the extended member is rotatably coupled at the first end to the cylindrical sensor at a pivot point such that the nozzle moves in an arc about the pivot point.

3. The sensor lens cleaning system of claim 1 , wherein the actuator control signal controls the actuator to rotate the extended member in an arc.

4. The sensor lens cleaning system of claim 1 , wherein the nozzle extends parallel to the sensor lens surface.

5. The sensor lens cleaning system of claim 4 , wherein the nozzle extends along at least a portion of the sensor lens surface.

6. The sensor lens cleaning system of claim 1 , wherein the nozzle is coupled to the second end of the extended member at approximately a 90-degree angle.

7. The sensor lens cleaning system of claim 1 , wherein the extended member is rotatably coupled to the cylindrical sensor and the nozzle rotates in an arc adjacent to and not in contact with the sensor lens surface as the extended member rotates about the first end.

8. The sensor lens cleaning system of claim 1 , wherein the extended member is rotatably coupled to the cylindrical sensor, the nozzle includes a linear array of micro fans, and the micro fans rotate in an arc adjacent to and not in contact with the sensor lens surface as the extended member rotates about the first end.

9. The sensor lens cleaning system of claim 1 , wherein the extended member is rotatably coupled to the cylindrical sensor, the nozzle includes an array of resonant actuators configured to generate ultrasonic pulses to simulate air surrounding the sensor lens surface, and the resonant actuators rotate in an arc adjacent to and not in contact with the sensor lens surface as the extended member rotates about the first end.

10. The sensor lens cleaning system of claim 1 , wherein the extended member is rotatably coupled to the cylindrical sensor, the nozzle includes a contactless airfoil blade, and the blade rotates in an arc adjacent to and not in contact with the sensor lens surface as the extended member rotates about the first end.

11. A sensor assembly for a vehicle, comprising:
a vehicle sensor having a cylindrical sensor body including a top surface, a bottom surface laterally spaced from the top surface, and a sensor lens surface perpendicular to the top and bottom surfaces, the sensor lens surface extending around a periphery of the vehicle sensor;
an extended member having a first end coupled to the cylindrical sensor body and a second end opposite the first end;
a nozzle coupled to the second end of the extended member;
an actuator configured to control the extended member; and
a controller in electronic communication with the actuator and configured to communicate an actuator control signal to the actuator;
wherein the nozzle generates an air stream directed at the sensor lens surface to remove debris from at least a portion of the sensor lens surface of the cylindrical sensor.

12. The sensor assembly of claim 11 , wherein the extended member is rotatably coupled to the top surface of the cylindrical sensor body at the first end such that the nozzle moves in an arc around the sensor lens surface without contacting the sensor lens surface.

13. The sensor assembly of claim 11 , wherein the extended member is rotatably coupled to the bottom surface of the cylindrical sensor body at the first end such that the nozzle moves in an arc around the sensor lens surface without contacting the sensor lens surface.

14. The sensor assembly of claim 11 wherein the controller generates an actuator control signal to control the actuator to rotate the extended member in an arc.

15. The sensor assembly of claim 11 , wherein the vehicle sensor is a 360-degree LIDAR sensor and the sensor lens surface fully encircles the cylindrical sensor body.

16. The sensor assembly of claim 11 , wherein the vehicle sensor is a 180-degree LIDAR sensor and the sensor lens surface encircles approximately half of the cylindrical sensor body.

17. The sensor assembly of claim 11 , wherein the nozzle extends parallel to and along at least a portion of the sensor lens surface.

18. An automotive vehicle, comprising:
a vehicle body;
a cylindrical vehicle sensor coupled to the vehicle body, the cylindrical vehicle sensor having a top surface, a bottom surface opposite the top surface, and a sensor lens surface perpendicular to both of the top and bottom surfaces, the sensor lens surface extending around a periphery of the cylindrical vehicle sensor; and
a sensor lens cleaning system coupled to the cylindrical vehicle sensor, the sensor lens cleaning system configured to remove debris from at least a portion of the sensor lens surface of the cylindrical vehicle sensor, the sensor lens cleaning system comprising:
an extended member having a first end rotatably coupled to the cylindrical vehicle sensor and a second end opposite the first end;
a nozzle coupled to the second end of the extended member;

an actuator configured to control the extended member; and
a controller in electronic communication with the actuator and configured to communicate an actuator control signal to the actuator;
wherein the nozzle generates an air stream directed at the sensor lens surface.

19. The automotive vehicle of claim 18 , wherein the cylindrical vehicle sensor is a 360-degree LIDAR sensor and the extended member is rotatably coupled to the top surface of the cylindrical sensor at the first end such that the nozzle moves in an arc around the sensor lens surface without contacting the sensor lens surface.

20. The automotive vehicle of claim 18 , wherein the cylindrical vehicle sensor is a 360-degree LIDAR sensor and the extended member is rotatably coupled to the bottom surface of the cylindrical sensor at the first end such that the nozzle moves in an arc around the sensor lens surface without contacting the sensor lens surface.

Assignees

• Gm Global Tech Operations Llc

Inventors

• Hart Nathaniel W
• Wright Adam L
• Clem Michelle M

Classifications

• G01S7/4812

  transmitted and received beams following a coaxial path · CPC title

• B60R11/00

  Arrangements for holding or mounting articles, not otherwise provided for · CPC title

• G02B27/0006

  with means to keep optical surfaces clean, e.g. by preventing or removing dirt, stains, contamination, condensation (G02B1/18 takes precedence; cleaning in general B08B) · CPC title

• G01S17/931

  of land vehicles · CPC title

• B60S1/544 Primary

  moving gas spreading means, e.g. arranged in wiper arms · CPC title