Study On The Key Problem Of Dynamic-Weighting System Of Thruway

Along with the development of the economy and economy regional division of work expansion, the thruway freight automobile phenomenon is more and more graved."The method of Biquadratic equation"that the experiment gets is to tell us: the automobile axis lotus enhances 2 times , the road surface breakdown will enhance original 16 times. This feasible express highway wait to be going to have gained some understanding to the load passing a vehicle in the process designing that , building, and be necessary according to that the automobile collects the cost passing by the load of an automobile to the highway. The system of weighting in highway dynamic——WIM (Weigh-In-Motion)was produced, and its requirement of precision is rigor more and more. How the accuracy premise moves downwards in guarantee weighing, structure dimension diminishing weighing systematically, raising a vehicle's further passes speed, is that dynamic weighing needs the problem solving in a hurry in system design.The main task of this disquisition is that systematic accepting is strenuously analytical to highway dynamic weighing, mathematic model having got dynamic weighing, mathematic model analyses on this account for the basis is in progress to various noise in system, noise signal characteristic, has brought forward automobile dynamic weighing algorithm inside the country according to different frequency: The frequency making use of wavelet analysis to be used for mark to the signal first is handled , is have the pertinences field to distinguish and get rid of noise and then in one by one different frequency region, the method using the nonlinearity data fitting especially has distinguished and got rid of the signal disturbing, and then highly valuing structure in low frequency signal since the doughnut pounds the low frequency period bringing about to sensor spring, the signal that the signal acquisition and the reality controlling monolithic machine system to that measure by weighing carries out the data handling queen , goes to except relevance noise signal. Via the studies of hardware designing having and having WIM system on the algorithm analysis basis in theory, the interior analogue test is having been in progress studies. The result is indicated, wavelet analysis method application, under speed more current than high vehicle, have improved systematic weighing of WIM system accuracy, and the effect is obvious.