Patent ID: 6842109

Claim:
A method of setting up an alarm for monitoring pressure in tires of a vehicle comprising: detecting a pressure value in each tire of the vehicle; calculating a base point of pressure according to the detected pressure values; and calculating a safety scope in pressure reference to the base point of pressure such that an alarm will be generated while the pressure value in the tires has a difference relative to the base point and that is more than the safety scope, wherein to calculate the base point is to average the detected pressure values; and the base point has a front-tires base part corresponding to the pressure values in front tires of the vehicle and a rear-tires base part corresponding to the pressure values in rear tires of the vehicle, wherein the front-tires base part is an average of the pressure values detected from the front tires of the vehicle; and the rear-tires base part is an average of the pressure values detected from the rear tires of the vehicle.