US 12,269,314 B2
Detecting and mitigating window condensation
Mohammad Naserian, Windsor (CA); and Allan Kenneth Lewis, Windsor (CA)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM Global Technology Operations LLC, Detroit, MI (US)
Filed on Jun. 16, 2022, as Appl. No. 17/841,883.
Prior Publication US 2023/0406063 A1, Dec. 21, 2023
Int. Cl. B60H 1/00 (2006.01); B60S 1/02 (2006.01)
CPC B60H 1/00785 (2013.01) [B60H 1/0073 (2019.05); B60H 1/00871 (2013.01); B60S 1/023 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A system for detecting and mitigating window condensation for a vehicle, the system comprising:
an interior camera;
a heating, ventilation, and air conditioning (HVAC) system; and
a controller in electrical communication with the interior camera and the HVAC system, wherein the controller is programmed to:
determine an opacity of a first window of the vehicle using the interior camera;
compare the opacity of the first window to a first opacity threshold; and
adjust the HVAC system to decrease the opacity of the first window of the vehicle at least by increasing an airflow to the first window using the HVAC system in response to determining that the opacity of the first window is greater than or equal to the first opacity threshold, wherein to increase the airflow to the first window, the controller is further programmed to:
calculate a first difference between the opacity of the first window and the first opacity threshold;
determine an opacity of a second window of the vehicle;
compare the opacity of the second window to a second opacity threshold;
calculate a second difference between the opacity of the second window and the second opacity threshold;
identify a first HVAC outlet, wherein the first HVAC outlet is configured to provide airflow to the first window;
identify a second HVAC outlet, wherein the second HVAC outlet is configured to provide airflow to the second window; and
increase an airflow to the first HVAC outlet using the HVAC system in response to determining that the opacity of the first window is greater than or equal to the first opacity threshold and that the opacity of the second window is less than the second opacity threshold;
decrease an airflow to the second HVAC outlet using the HVAC system in response to determining that the opacity of the first window is greater than or equal to the first opacity threshold and that the opacity of the second window is less than the second opacity threshold;
set the airflow to the first HVAC outlet proportionally to the first difference in response to determining that the opacity of the first window is greater than or equal to the first opacity threshold and that the opacity of the second window is greater than or equal to the second opacity threshold; and
set the airflow to the second HVAC outlet proportionally to the second difference in response to determining that the opacity of the first window is greater than or equal to the first opacity threshold and that the opacity of the second window is greater than or equal to the second opacity threshold.