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vehicle speed Observation Models Based on the Data on the Smartphone GPS

Computer Technology and Application 2016年第6期7卷 300-307页

作者： Gede Herdian Setiawan I Made Oka Widyantara Made Sudarma Magister Electrical Engineering Department Engineering Faculty and Udayana University Denpasar Bali Indonesia

The development of GPS （global positioning system） receiver now can be integrated on a smartphone. GPS receiver on smartphones has been developed for location-based applications. Smartphones are very suitable to be used as an experimental tool, because smartphones are usually equipped with various types of sensors. This paper proposes a model observation vehicle speed on a road section based on the GPS data on the smartphone. Observations made by calculating the speed of the speed of vehicles moving through the data transfer at the GPS location of the smartphone, the data are then sent periodically to the server and server processing and storage of vehicle speed data. After tested with test reliability indicators use RMSE, observations with model observations speed, speed based on GPS data on a smartphone are relevant when compared with the speed directly from the vehicle＇s speedometer with the difference between the value of the difference of speed that is 3.1785 km/h.

关键词： GPS smartphone vehicle speed observations.

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Research on vehicle speed Estimation Algorithm Based on AMESim platform

Research on Vehicle Speed Estimation Algorithm Based on AMES...

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第24届中国控制与决策会议

作者： Meng Fankunr State Key Laboratory of Automotive Simulation and Control Jilin University Department of Control Science and Engineering Jilin University

To get the exact vehicle speed can effectively improve vehicle control performance in the vehicle’s safety control system. Depending on the simulation advantage of AMESim, the highly precise vehicle model is built as an experimental model reference model, and then adaptive kalman filter algorithm combining with the AMESim and matlab co-simulation was adopted to realize estimation of vehicle speed. In the AMESim simulation environment the algorithm was verified with the different working conditions. The simulation results show that the estimated effect is good.

关键词： vehicle speed AMESim and matlab Co-Simulation Adaptive kalman filter

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Field measurement of strain response for typical asphalt pavement

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Journal of Central South University 2021年第2期28卷 618-632页

作者： PAN Qin-xue ZHENG Ce-ce Lü Song-tao QIAN Guo-ping ZHANG Jun-hui WEN Pi-hua MILKOS Borges Cabrera ZHOU Huai-de Key Laboratory of Road Structure and Material of Ministry of Transport(Changsha) School of Traffic and Transportation EngineeringChangsha University of Science&TechnologyChangsha 410114China School of Engineering and Materials Science Queen Mary University of LondonLondon E14NSUK

In order to reveal the changing law of the mechanical response of asphalt pavements under the action of vehicle load and provide references for the design of durable pavements,three typical asphalt pavement structures with flexible base(S1),combined base(S2),and semi-rigid base(S3)were selected to perform field strain tests under static and dynamic load using the fiber Bragg grating optical sensing *** changing characteristics of the strain field along the horizontal and depth directions of pavements were *** results indicate that the most unfavorable asphalt pavement layers were the upper-middle surface layer and the lower base *** addition,the most unfavorable loading positions on the surface layer and the base layer were the center of wheel load and the gap center between two wheels,*** most unfavorable layer of the surface layers gradually moved from the lower layer to the upper layer with the increase of base layer *** power function relationships between structural layer strain and vehicle speed were *** semi-rigid base asphalt pavement was the most durable pavement type,since its strain value was lower compared to those of the other structures.

关键词： asphalt pavement strain duration curve load position vehicle speed fiber Bragg grating optical sensors

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