A road surface recognition method for strengthening roads in automobile proving grounds

Abstract

Provided is a pavement identification method for a reinforced road in an automobile proving ground. The method comprises steps of: acquiring the motion information of a vehicle body and axles by an acceleration sensor and an angular rate gyroscope, and acquiring CAN message data on a vehicle bus via an OBD interface of the vehicle; preprocessing acquired multi-source data to obtain stable time-domain data; computing the attitude information of the vehicle body and the axles and analyzing the protocol of the CAN messages; transforming the vibration acceleration data and attitude data from the time domain into the spatial domain by using vehicle speed; performing time-domain and frequency-domain feature extraction on the data in the spatial domain; designing a artificial neural network pavement classifier based on the extracted time-domain and frequency-domain features to identify the reinforced road in the automobile proving ground. The method solve a problem that an independent suspension is insensitive to landforms, compensates the defect of a conventional method that identifies the pavements just by using acceleration data, and greatly increases the identification accuracy and application range of the test road landform and ground.

Description

technical field [0001] The invention relates to the technical field of road surface recognition, in particular to a road surface recognition method aimed at strengthening roads in automobile proving grounds. Background technique [0002] In order to ensure the overall performance and component reliability of new products, a large number of vehicle tests are required during the development and finalization of new models. The automobile proving ground is an important place for vehicle testing. It has a variety of typical test roads that have been concentrated and concentrated, mainly including high-speed ring roads, combined enhanced roads, noise test roads and standard ramps. In these typical road tests, the enhanced road test is used to test the durability of vehicle parts and subsystems. The enhanced road mainly includes typical roads such as block stone roads, wave roads, twisted roads, gravel roads, washboard roads, and billy stone roads. Strengthen the road. These loop...

AI Technical Summary

Problems solved by technology

These loops require a large number of tests. However, at present, the test data of major automobile proving grounds in China are basically recorded manually. This method is difficult to ensure the authenticity, accuracy and integrity of the test records.

Images