This paper persents the entire development process of Data-acquisition System for Cold Starting Testing of Automobile, especially expatiates the found process of data-fusion model and arithmetic in detail; and do volumes practice testing, the facts indicate that the development of the Testing System is successful; The data-fusion model and arithmetic basically ensured the accuracy of data processing, The whole system reachs the anticipated goal., and the system can offer credible measuring for auto-trade. In addition, the means of the establish of data-fusion and data- calculate can be use for reference to others testing system .
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