Hello,
I was just wondering, how do these automatic wipers work that switch on and speed up when it rains? I know there is a magic box behind the mirror but what is in it and how does it work?
Thanks.
- posted
14 years ago
automatic wipers
Loading thread data ...
- Vote on answer
- posted
14 years ago
Stephen gurgled happily, sounding much like they were saying:
formatting link
"The most common modern rain sensors are based on the principle of total internal reflection: an infrared light is beamed at a 45-degree angle into the windshield from the interior ? if the glass is wet, less light makes it back to the sensor, and the wipers turn on."
- Vote on answer
- posted
14 years ago
Not very well is the answer - in my experience.
Think it looks at light scatter in the glass.
- Vote on answer
- posted
14 years ago
Various methods but the latest use image sensors and DSPs to work it out. Here's the patent for one of Donnelly's systems: