3 ms·
If it is a ball it probably is a ground plate on the bottom and top with sense connector plates on the edge of the box where the ball is in. The ball moves arou
by consp 9y ago
If it is a ball it probably is a ground plate on the bottom and top with sense connector plates on the edge of the box where the ball is in. The ball moves around and if it gets a connection (ground to sense) a counter gets increased and a time gets reset and since you are moving the thing usually moves around and make some connection when braking/accelerating/steering. You need bumpy roads though on longer trips on the highway.
Dirt cheap, but unreliable. Straingauges (in my experience) generally need to be tuned for every gauge which makes them somewhat more expensive.
- function_seven 9y agoOh, I think I misread my parent's comment. On my fob, it was purely to unlock the doors when you approached the car. It didn't involve itself with the ignition or running of the car. That was still an old-school key (but with the tiny improvement of a known resistor ohm-age in the key itself†) † http://ricksfreeautorepairadvice.com/gm-anti-theft-systems-overview/ http://ricksfreeautorepairadvice.com/gm-anti-theft-systems-o...