| 摘要 |
PURPOSE:To measure axle loads accurately, to measure the total weight of a vehicle highly accurately together with the axle loads, and to make it possible to perform automatic totalling and the judgement of the kind of the vehicle, without flattening the upper surface of a measuring girder and the surfaces of roads before and after the girder. CONSTITUTION:The length of a bridge shaped girder is longer than the longest wheel base of a vehicle. On said girder, shearing force detectors 5A-5L are arranged at an equal interval, which is shorter than the shortest wheel base. The outputs of the detectors 5A-5L are inputted to a control circuit 9. When a vehicle 6 passes on the girder 1 from the lect to the right, the detector 5A sends the output corresponding the weight of front wheels (front axle) 7. Then the detectors 5B-5L sequentially output the weights. The front axle outputs and the rear axle outputs are sequentially overlapped in the order of the outputs, and upper envelops are formed. The half period to several periods of the synthesized waves are averaged by a procedure 11. Then axle loads WF and WB of the front axle and the rear axle are obtained by a procedure 12. |
