Pre-Safe Sound: Playing ‘pink noise’ in the split second before impact (2015)
This is a comment from Reddit on the same [0]; though I cannot vouch for its veracity, I found it interesting nonetheless:<p>Former Benz master tech here.<p>I&#x27;ve spent a good bit of time diving into the nitty gritty of these systems.<p>It uses all of the vehicle sensors to determine crash logic.<p>You want to fire the pretensioners before the airbags if at all possible. This locks the occupants in a much more secure and predictable psition.<p>Accelerometers can determine if something like a rollover is in progress.<p>Heavy braking + high speed + sudden activation of the parking sensors indicates a crash before physical contact happens.<p>It can use the radar on distronic equipped cars to predict a crash.<p>If the vehicle is in a slide, and a sudden yaw correction happens, this means a collision has occurred, even if the airbag sensors haven&#x27;t been triggered. This is useful because the airbag sensors are only good at detecting force in one dimension.<p>It&#x27;s even possible for the vehicle to determine to fire the pretensioners but no airbags based on occupant size and weight (determined through seat&#x2F;steering wheel position and capacitive mats in the seats) and impact vectors.<p>It will even do things like full field the alternator up to 18+ volts to slam the windows shut super fast in the event of a rollover.<p>The actual detection logic fills a 4&quot; thick book.<p>It&#x27;s a big reason those cars are so damn expensive.<p>Mercedes doesn&#x27;t fuck around with safety.<p>If I had to be in a wreck, it would be in an S class. Hands down.<p>0: <a href="http:&#x2F;&#x2F;www.reddit.com&#x2F;r&#x2F;todayilearned&#x2F;comments&#x2F;59qhaw&#x2F;til_new_mercedesbenz_cars_will_play_a_short_blast&#x2F;d9avtav" rel="nofollow">http:&#x2F;&#x2F;www.reddit.com&#x2F;r&#x2F;todayilearned&#x2F;comments&#x2F;59qhaw&#x2F;til_ne...</a>