公开(公告)号：US20240109519A1

公开(公告)日：2024-04-04

申请号：US17957252

申请日：2022-09-30

Applicant: Waymo LLC

Inventor： David Duff ,  Michael Hall-Snyder ,  Glenn Wheelock

IPC: B60S1/60 ,  B60S1/34

CPC classification number: B60S1/606 ,  B60S1/3495

Abstract: Example embodiments relate to wiper devices for cleaning sensor housings. An example embodiment includes a wiper device for cleaning a surface of a rotatable sensor housing. The wiper device may have a driving arm having a first end and a second end. The first end of the driving arm is connected to a rotatable shaft. The wiper device may also have a wiper arm pivotally connected to the second end of the driving arm. The pivotal connection is located between a front region and a rear region of the wiper arm. Further, the wiper device may have a wiper blade coupled to the front region of the wiper arm. The wiper blade may be configured to wipe the surface of the rotatable sensor housing. Additionally, the wiper device may have a counterweight coupled to the rear region of the wiper arm.

公开(公告)号：US20220063568A1

公开(公告)日：2022-03-03

申请号：US16950968

申请日：2020-11-18

Applicant: Waymo LLC

Inventor： Seth Gilbertson ,  Stephan Heinrich ,  Michael Hall-Snyder

IPC: B60S1/56 ,  G01S7/40 ,  G01S13/931 ,  B08B3/10 ,  B08B5/02 ,  B60S1/52 ,  B60S1/54

Abstract: Aspects of the disclosure relate to cleaning rotating sensors having a sensor housing with a sensor input surface. For instance, a first signal from a position sensor indicating a current position of the sensor housing may be received. A second signal to activate a liquid nozzle and an air nozzle, the liquid nozzle being configured to provide a spray of liquid and the air nozzle being configured to provide a puff of gas may be received. When to activate the liquid nozzle in order to provide the spray of liquid on the sensor input surface may be determined based on the current position of the sensor housing and the second signal. When to activate the air nozzle in order to provide the puff of gas on the sensor input surface may be determined based on the current position of the sensor housing and the second signal.