Re: Alpinestars introduces a jacket with airbags for BMW Motorrad riders A welcome move, but a few questions:
1. How does the air-bag deploy by itself? Is it mechanical release or electrical release?
2. If the air-bag is triggered and released electrically, which electric supply (battery) does it use? Bike's battery or a separate battery in the jacket (that needs charging)?
3. Looks like the gas chamber (needed to inflate the airbag) is mounted on the jacket. This can cause injury if you fall on it.
4. Will you get the same level of protection that you get by an airbag that is fixed to a sturdy surface (car-dashboard)
5. Going to the next level, how about designing an airbag that is a replacement for a helmet (an 'inflatable' helmet) Quote:
Originally Posted by anshumandun I think the sensors in the jacket measure g forces. If the g forces exceed a threshold, it is assumed that impact is imminent and the airbags deploy in a few milliseconds. |
The problem with this approach is that the g forces vary drastically at the time of impact, not long before the impact. That means you would get a measureable change in g forces only when you actually fall down and hit something, not when you are about to fall (assuming the sensor is on you, not on the bike).
Car air-bags, on the other hand, have all the time between the 'bumper-hit' and 'you-hitting-the-dashboard' to activate the sensor and inflate the air-bag.
Last edited by jinojohnt : 30th September 2016 at 10:34.
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