So in driving in the rain over the Thanksgiving weekend along the east coast, I got quite a bit of experience with my auto sensing wipers and it got me wondering what is the mechanism used to determine when to wipe.
I know the manual says that they adjust based on the vehicle speed. I'm wondering what else factors into the equation and how.
Two ideas have come to mind:
1. A sensor(s) measures the tiny impact of rain drops on the windshield.
2. The wiper resistance after a swipe determines how wet the windshield is based on the resistance from friction.
It is probably some combination or something else altogether. Anyone know more?
I know the manual says that they adjust based on the vehicle speed. I'm wondering what else factors into the equation and how.
Two ideas have come to mind:
1. A sensor(s) measures the tiny impact of rain drops on the windshield.
2. The wiper resistance after a swipe determines how wet the windshield is based on the resistance from friction.
It is probably some combination or something else altogether. Anyone know more?