Control for passive wiper system

Patent metadata

Field	Value
Publication number	US-10766463-B2
Application number	US-201715820559-A
Country	US
Kind code	B2
Filing date	Nov 22, 2017
Priority date	Oct 31, 2014
Publication date	Sep 8, 2020
Grant date	Sep 8, 2020

Abstract

A system includes a dome, a wiper assembly, a position sensor and a control device. The wiper assembly includes a wiper blade configured to rotate around the dome. The position sensor may be configured to send a signal to a control device when a wiper blade passes the position sensor. The control device may include one or more processors configured to receive the signal from the position sensor and determine a location of the wiper blade relative to the dome based on the received signal.

First claim

The invention claimed is:

1. A system for controlling movement of a wiper blade assembly, the system comprising:
a wiper blade assembly including at least one wiper blade and a pivoting connector; and
one or more processors configured to:
receive a signal indicating that optical deterrents are present on a surface of a dome;
in response to receiving the signal, cause the wiper blade assembly to move in a first direction around the dome by rotating a ring in a first direction around the dome so as to cause an actuator to move the at least one wiper blade from a stowed condition to a deployed condition, wherein the ring extends around the dome; and
cause the wiper blade assembly to move in a second direction around the dome by rotating the ring in the second direction so as to cause the actuator to move the at least one wiper blade from the deployed condition to the stowed condition,
wherein the second direction is opposite of the first direction,
wherein the pivoting connector includes a post portion and the ring includes a ramp, and
wherein the post portion is configured to interact with the ramp to move the at least one wiper blade from the deployed condition to the stowed condition.

2. The system of claim 1 , further comprising the dome.

3. The system of claim 2 , further comprising a vehicle, wherein the dome is mounted on the vehicle.

4. The system of claim 1 , wherein the first direction is a clockwise direction and the second direction is a counterclockwise direction.

5. The system of claim 1 , wherein the one or more processors are further configured to control a speed that the wiper blade assembly rotates around the dome.

6. The system of claim 1 , wherein the actuator comprises a post mounted to the ring.

7. The system of claim 1 , wherein the signal is a first signal, the one or more processors are further configured to:
receive a second signal indicating that optical deterrents are cleared from the dome; and
wherein the one or more processors are further configured to cause the wiper blade assembly to move in the second direction in response to receiving the second signal.

8. The system of claim 1 , further comprising a drive motor configured to cause the ring to rotate.

9. The system of claim 1 , further comprising a spray nozzle, and wherein the one or more processors are further configured to:
receive a signal from a position sensor indicating detection of the at least one wiper blade at a first position relative to the dome; and
based on the first position, cause fluid to be dispensed through a spray nozzle when the at least one wiper blade is at a pre-determined position.

10. The system of claim 9 , wherein the one or more processors are further configured to:
access information about a speed of the wiper blade as the at least one wiper blade rotates around the dome;
determine a second position of the at least one wiper blade relative to the dome based upon the speed; and
cause the fluid to be dispensed further based on the determined second position.

11. The system of claim 1 , wherein the at least one wiper blade is configured to rotate 360 degrees around the dome.

12. The system of claim 1 , wherein the post portion is configured to interact with the ramp to move the at least one wiper blade from the stowed condition to the deployed condition.

13. The system of claim 1 , wherein the post portion is configured to move along a top surface of the ramp when the ring rotates in the first direction.

14. The system of claim 1 , wherein the post portion is configured to move along a bottom surface of the ramp when the ring rotates in the second direction.

15. The system of claim 1 , wherein the ramp is configured to pivot in order to move the at least one wiper blade from the deployed condition to the stowed condition.

16. The system of claim 1 , wherein the ramp is configured to pivot in order to move the at least one wiper blade from the stowed condition to the deployed condition.

17. The system of claim 1 , further comprising a second ring fixed relative to the dome, the ring being rotatable relative to the second ring, and wherein the ramp is arranged on the second ring.

18. The system of claim 1 , further comprising a top plate, and wherein the wiper blade assembly is coupled to the ring via a mount.

19. The system of claim 1 , wherein the wiper blade assembly includes at least two wiper blades.

20. A system for controlling movement of a wiper blade assembly, the system comprising:
a wiper blade assembly including at least one wiper blade and a pivoting connector; and
one or more processors configured to:
receive a signal indicating that optical deterrents are present on a surface of a dome;
in response to receiving the signal, cause the wiper blade assembly to move around the dome by rotating a ring around the dome,
wherein the pivoting connector includes a post portion and the ring includes a ramp, and
wherein the post portion is configured to interact with the ramp to move the at least one wiper blade from a deployed condition to a stowed condition.

Assignees

• Waymo Llc

Inventors

• Doorley Graham
• Karplus Paul Thomas Hansen
• Avram Peter

Classifications

• B08B1/34

  rotating about an axis parallel to the surface · CPC title

• B08B1/16

  Rigid blades, e.g. scrapers; Flexible blades, e.g. wipers · CPC title

• B60S1/56 Primary

  specially adapted for cleaning other parts or devices than front windows or windscreens {(rear-view mirror arrangements mounted on vehicle exterior including cleaning devices B60R1/0602)} · CPC title

• B60S1/08 Primary

  electrically driven {(conjoint control of windscreen wiper motor and liquid supply of windscreen washer B60S1/482; conjoint control of windscreen wiper motor and means for cleaning parts o parts other than windscreens or front windows B60S1/56, B60S1/58, B60S1/606)} · CPC title

• B60S1/482

  combined with the operation of windscreen wipers · CPC title