Patent ID: 6339749
Filing Date: 2002-01-15
Classification: B60T,G01G

Abstract:
A device for determining a weight of a motor vehicle which is being moved by propulsive forces in its longitudinal direction, comprising:a microprocessor; a memory coupled to the microprocessor; and a sensing system coupled to the microprocessor; wherein the microprocessor has stored therein a program for causing the system continuously to detect, at successive points in time separated by regular periodic time intervals, measurement signals which correlate with said propulsive forces and with an associated vehicle longitudinal acceleration; storing successively in the memory a first plurality of continuously detected measurement signals, said first plurality of signal forming in the memory a first time sequence for successive propulsive forces and a second time sequence for associated vehicle longitudinal accelerations; reading out of said memory a second plurality of successively stored measurement signals from said first and second time sequences; and computing an output signal that correlates with a current weight of the vehicle based on said second plurality of successively stored measurement signals; wherein the microprocessor processes the second plurality of successively stored measurement signals read from the memory according to a regression calculation to generate said output signal; and the output signal for the current weight of the vehicle is a value calculated according to the equation mFzg=Sbz-Sz*Sb&af;[-Sb]/N)Sbb-Sb*Sb/N,â€ƒwith Sb=&Sum;i=1N&it;bFzgi,Sz=&Sum;i=1N&it;ZTRLi,Sbb=&Sum;i=1N&it;bFzgi&CenterDot;bFzgi&it;â€ƒ&it;andSbz=&Sum;i=1N&it;bFzgi&CenterDot;ZTRLi,ZTRLi being a value from the first time sequence, and bFzgi being a value from the second time sequence.