Patent ID: 7023329
Filing Date: 2006-04-04
Classification: B60R

Abstract:
1. An air pressure induction type vehicle anti-thief device installed in a motor vehicle, comprising: an on-vehicle main unit; at least one sensor mounted in at least one corresponding location of said motor vehicle and electrically connected to said on-vehicle main unit, each said sensor adapted to detect an abnormality of the respective corresponding location of said motor vehicle and to send a corresponding abnormality signal to said on-vehicle main unit; and at least one alarm device electrically connected to said on-vehicle main unit and controlled to output a corresponding alarm upon said on-vehicle main unit in receipt of said corresponding abnormality signal from one said sensor on-vehicle main unit; wherein, said at least one sensor includes an air pressure sensor installed in the inside chamber of said motor vehicle at a predetermined location and adapted to detect the amount of variation of air pressure in said inside chamber and to send an air pressure abnormality signal to said on-vehicle main unit, causing said on-vehicle main unit to control said at least one alarm device to output said alarm when the detected amount of transient variation of air pressure surpassed a predetermined safety air pressure variation value, said amount of transient variation of air pressure being the amount of variation of air pressure in the inside chamber of said motor vehicle within a unit time.