In order to realize the automatic identification of structural road of proving ground

a road structural characteristics acquisition system based on MPU6050 is designed. Tri-axial acceleration and angular velocity are acquired from acquisition system and the quaternion method is applied to calculate the pitch and roll angle of the vehicle. Vertical acceleration of test vehicle can be calculated through these data. A set of uniform interval road characteristics in spatial domain can be derived with vehicle speed based on Fourier transform. Data truncation is carried out and the spatial frequency domain eigenvector can be obtained with DFT algorithm. Template matching method is adopted in order to realize the classification of six roads. Test result shows that comprehensive accuracy is over 95 % and it is robust to sensor location

different vehicles and different speeds.