Measurement of Velocity and Linear Acceleration during Vehicle Movement

In the article is presented a method for measuring the realized linear accelerations from the motion of an automobile in real roads and operational conditions in the street network of Sofia. The total acceleration of the automobiles is measured by MEMS (Micro-Electro-Mechanical Systems — three-axis accelerometer model LIS3LV02DQ from STMicroelectronics) inertial sensors, the information from which is received by control and conversion unit based on programmable microprocessor controller. The processed information enters a computer, where it's recorded and visualized. Measurements and analysis of the longitudinal accelerations obtained by an automobile from several consecutive attempts on a specific route in different styles (modes) of driving the same automobile under the same climatic conditions were performed. The data obtained from the experiments and the accumulation of databases can be used to create models for determining the driving behavior of the driver, models for determining the unevenness of the road surface, the behavior of the automobile and the comfort of travel.