Method and apparatus for measuring axle load of a running vehicl

Details Method and apparatus for measuring axle load of a running vehicl Method and apparatus for measuring axle load of a running vehicl

1995-07-05

1996-08-20

Chilcot, Richard

Measuring and testing

Tire, tread or roadway

Tire inflation testing installation

E01C 2300

Patent

active

055467962

ABSTRACT:
Axle load meters are arranged in an axle load measuring area of a road. Instantaneous axle load values W.sub.1, W.sub.2, . . ., W.sub.n are sampled from outputs of the axle load meters at time points t.sub.1, t.sub.2, . . ., t.sub.n as measured from a time point when the running vehicle enters the axle load measuring area. Pairs of instantaneous axle load values (W.sub.1, W.sub.1+Tk), (W.sub.2, W.sub.2+Tk), . . ., (W.sub.i, W.sub.i+Tk) at time points (t.sub.1, t.sub.1+k), (t.sub.2, t.sub.2+k), . . ., (t.sub.i, t.sub.i+k) each having a fixed time interval T.sub.k (k=1 to j) are determined based on the measured instantaneous axle load values W.sub.1, W.sub.2, . . ., W.sub.n, and average values W.sub.1Tk, W.sub.2Tk, . . ., W.sub.iTk of the respective pairs are calculated, to thereby produce average value groups for the respective fixed time intervals T.sub.1, T.sub.2, . . ., T.sub.j. An average value group having a minimum variation is selected from the average value groups, and an average of the selected average value group is employed as the axle load of the running vehicle.

REFERENCES:
patent: 4049069 (1977-09-01), Tamamura et al.
patent: 4912967 (1990-04-01), Shiraishi et al.
patent: 5289718 (1994-03-01), Mousseau

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