【谷歌老司机:雨天自驾系统】

【谷歌老司机:雨天自驾系统】谷歌自驾车虽然一直被科技爱好者们所看好,但其在恶劣条件下的驾驶能力尚未接受考验。近日,谷歌开始为自驾车装备激光传感器和圆顶式雨刷,从而使其能够穿透大雨和尾气云感应四周状况,并针对不同程度的恶劣天气条件调整雨刷状态和驾驶的稳定性。

 

Google forces its self driving cars to pull over in a storm - as they haven't yet been taught how to drive in the rain
By CHEYENNE MACDONALD
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Self-driving cars may be smart enough to navigate the streets on their own, but that doesn't mean they don't get a driving lesson every once in a while.
The recent California rains have given Google valuable practice time for its self-driving cars, allowing them to learn how to drive safely in poor weather conditions.
Using laser sensors and the dome-mounted equivalent of windshield wipers, the company is working to help these cars 'see through' rain and exhaust clouds.
The updates were released in Google's December report.
While the cars have gotten plenty of practice in sunny conditions, hitting between 10-15,000 autonomous miles each week, it's necessary to acclimate them to other kinds of weather.
Now, with El Niño bringing much needed rains to California, Google is among those celebrating.
'After a multi-year drought, we're finally starting to get some rain in California.
'It's not only a welcome relief for farmers and gardeners, but an opportunity for our cars to get more time learning in cold and rainy weather,' the report says.
Like human drivers, self-driving cars will have to adjust their speed and movements to stay safe on rainy roads.
In the report, the team says 'we've made sure our cars are aware of how rain may affect their ability to drive.
'Our cars can determine the severity of the rain, and just like human drivers they drive more cautiously in wet conditions when roads are slippery and visibility is poor.'
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As these smart cars continue to get even smarter, it's necessary to make sure their sensors are capable of keeping up with the unpredictability of weather.
For now, the cars will automatically pull over and wait out the storm, or test drivers will take over control, the company writes.
'Things that human drivers do as a knee-jerk reaction, such as driving slower and taking slower, wider turns in heavy rain or snow, are things that the self-driving cars have to be taught,' writes Android Headlines.
To help its cars through the storm, Google has developed a type of 'windscreen wiper on the dome,' which keeps the sensors' view clear.
'Our laser sensors are able to detect rain, so we have to teach our cars to see through the rain drops and clouds of exhaust on cold mornings, and continue to properly detect objects,' the report says.
'We're helped by our diversity of sensors, since our radars have no problem seeing through this sort of clutter.'
Google is now beginning to collect data in snowy and rainy conditions to give its self-driving cars the skills to drive safely, no matter the weather.
http://www.dailymail.co.uk/sciencetech/article-3394737/Google-having-tell-self-driving-cars-slower-rain-human-driver-s-t-up.html

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