Smartphone screens are getting bigger
Screen ratio is getting higher and higher
The risk of broken screens also increases
When the phone falls from your hands
Everything seems to stop
You seem to hear your heartbeat
There is silence all around …
You seem to be looking at your pocket money this month
Follow the phone to spin and fall to the ground
Now most young people are worried that putting a heavy mobile phone protective case will affect the beauty of the mobile phone, but we also don’t want to fall into the ground and break the mobile phone screen because of the pursuit of beauty. So why not design a protective case that can only be opened when the phone is in danger? Therefore, Philip Frisel, an engineering student at the University of Allen in Germany, designed a mobile phone case with an “airbag” for his mobile phone. This newly designed “active shock absorption” protective case uses the principle of airbags. So that you no longer have to worry about your phone falling.
The structure of the vehicle airbag is mainly composed of a sensor, a generator and an airbag system. The sensor can detect the vehicle speed impact parameter when a collision occurs. When the sensor feels a certain degree of impact, it will continue to trigger the subsequent ejection of the generator and the airbag, thereby protecting it. The sensor can sensitively measure the speed, pressure, temperature and other information of the physical world. Similar to the principle of automotive airbags, Fritzer’s early activation device mainly relies on the smart sensors in it. It can detect the acceleration of gravity by detecting the acceleration of the phone, and then activate the reed buffer devices on the four corners of the phone. .
As shown in the figure, the reeds on the four corners of the phone are connected to eight thin metal rings, which are usually flat in the phone case. Once the smart sensor detects the falling of the mobile phone, the reed cushioning devices at the four corners of the mobile phone case will be quickly triggered, popped up and rolled up, becoming the “airbag” of the mobile phone, greatly reducing the impact and protecting the edge of the mobile phone from direct impact In contrast, if there is no such protective case, the mobile phone will directly “hard-hit” with the ground. It only takes a few seconds for us to pick up the mobile phone that fell to the ground, and we can easily plug these reeds back into the phone case for later use.
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