Vehicle safety device for engine shut-off and emergency assistance

Abstract

A vehicle safety device for detecting vehicle tilt automatically shuts-off power to an ignition system and fuel pump and summons emergency assistance using a bistable switch circuit that toggles between a first bistable switch position in response to a reset signal and a second bistable switch position in response to an alert signal. The safety device can remain in the bistable switch positions without a power source and employ an encrypted bi-directional protocol to summon emergency assistance and generate the reset signal without vehicle operator intervention.

What is claimed is: 
     
         1 . A vehicle safety device, comprising:
 a tilt sensor that generates an alert signal in response to vehicle tilt; and   a bistable switch circuit that toggles between a first bistable switch position and a second bistable switch position to:
 selectively connect a power source to an ignition system and a fuel pump in the first bistable switch position in response to a reset signal; and 
 selectively disconnect the power source from the ignition system and the fuel pump and generate a notification signal in the second bistable switch position in response to the alert signal to shut off the engine and summon emergency assistance at a remote location.