MEMS sensors signal preprocessing for vehicle monitoring systems

In the article characteristics of signals recorded by 3-axis MEMS accelerometers and gyroscopes during driving a car was presented. The method of acquisition was discussed as well as the structure of Logger Box measurement system and conditions of conducting experimental research. Signal bands were assigned, typical for maneuvers, vibrations from the road pavement surface and disruptions generated by working engine. Methods of signals filtration and assignment of characteristics describing vehicle's movement were presented. Data processing was proposed, which can be useful for assessment of driving technique. The developed algorithms were verified on signals recorded in trucks and passenger cars in real conditions of driver's work.