Patent ID: 6803530
Filing Date: 2004-10-12
Classification: G01G

Abstract:
An axle load sensing system for a vehicle having an air bladder support system mounted between the frame of the vehicle and an axle, the axle load sensing system comprising:at least a first pressure sensor providing air pressure readings for at least one air bladder of the air bladder support system; first and second transfer functions relating air pressure in the air bladder to weight carried by the air bladder support system; a transfer function indication responsive to a direction of change in air pressure in the air bladder for indicating which of the first and second transfer functions to interrogate to determine axle load; and a processor connected to receive the air pressure readings and responsive to the transfer function indication for interrogation of one of the first and second transfer functions using the air pressure readings as an input to return an estimate of load carried by the air bladder support system.