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(Some Guy)   Rain affects autonomous cars like it does humans. The rush to patent tiny windshield wipers for sensors expected any day now   ( divider line
    More: Awkward, Rain, Sensor, Detection theory, Simulation, Coventry, Rainbow, Type I and type II errors, Vehicle  
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342 clicks; posted to STEM » on 26 Feb 2021 at 4:54 PM (7 weeks ago)   |   Favorite    |   share:  Share on Twitter share via Email Share on Facebook

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TWX [TotalFark]
2021-02-26 4:50:14 PM  
Prior art:

Volvo 240 early e-code headlight wipers in action
Youtube jmHrqhNIPBE

Americans don't realize this because there was a national de-facto standard that limited all vehicles sold in the US to one of three headlamp configurations.  For many, many years, international automakers had to design a specific set of headlamps for the American market.  It wasn't until the 1980s that this was lifted and suddenly we got headlights molded to fit the shape of the vehicle.  The American-spec designs did not lend themselves to wipers like the original designs for other markets did.
2021-02-26 5:09:39 PM  
The backup camera on the wife's car could use one. That thing is always dirty.
2021-02-26 7:40:15 PM  
All high-level AVs rely heavily on sensors, and in the paper, 'Realistic LiDAR with Noise Model for Real-Tim Testing of Automated Vehicles in a Virtual Environment', published in the IEEE Sensors Journal, researchers from the Intelligent Vehicles Group at WMG, University of Warwick have specifically simulated and evaluated the performance of LiDAR sensors in rain.

I'm glad this testing was done by a real Tim.  I hate it when you get some phony Tim who you later learn "goes by Timothy" or some such B.S.
2021-02-26 8:11:20 PM  
Robots, just like us
2021-02-26 9:24:26 PM  
LiDAR.  Camera-based systems have far fewer problems with weather; they in turn have more problems with stationary low-contrast objects in the roadway.
2021-02-26 11:28:41 PM  

natazha: LiDAR.  Camera-based systems have far fewer problems with weather; they in turn have more problems with stationary low-contrast objects in the roadway.

I'm not sure how you program in instincts. Most times you just know how that driver is going to fark up in a certain way. Expect it.
2021-02-27 12:40:42 PM  
One of the issues of LiDAR sensors is the degradation of its performance in rain.


If a LiDAR beam intersects with a raindrop at a short distance from the transmitter, the raindrop can reflect enough of the beam back to the receiver, therefore detecting the raindrop as an object.

You see? It's doing exactly what it supposed to be doing. The performance problem you need to fix is not in the sensor gathering the data. It's in the processing of the data.
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