Automobile running speed detection method based on smart phone audio perception
A technology of driving speed and smart phones, applied in the direction of neural learning methods, measuring devices, computer components, etc., can solve the problems of high cost and weak anti-interference, and achieve low cost, strong anti-interference, and not easy to interfere Effect
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[0055] In order to test the performance of this method, this method is written as an Android application and deployed in different models of Android phones. And recruited 6 volunteers, 3 as drivers driving different vehicles, 3 as pedestrians carrying mobile phones for testing. In order to ensure safety, an open and empty road was chosen as the experimental site.
[0056] First, test the overall error of the method in various cases. figure 2 Cumulative distribution functions of speed detection errors for electric vehicles, gasoline vehicles, and overall are shown. It can be seen from the figure that the speed detection error of 90% of electric vehicles is less than 2.9km / h; the speed detection error of 90% of gasoline vehicles is less than 2.4km / h; 90% of the overall detection error is less than 2.7km / h, which fully illustrates This method has smaller error and higher accuracy.
[0057] Then, test the accuracy of the electric vehicle speed interval classifier. image 3 Th...
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