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This article has a system of automatic weight and dimensional control (weight - and - motion), which allows weighing, measuring geometric characteristics, as well as recognition of state registration plates, passing vehicles without stopping, as well as processing of this data and registered violators. The focus is on the work of measuring the mass along the axes. All conversions are performed on the National Instruments multifunction board, which has a microcontroller, additional I/O peripherals field-programmable gate array, which means user-programmable gate arrays. In a more general case, they are called FPGAs - programmable logic integrated circuits. This study is important because heavy vehicles smash federal and local roads. Therefore, it is necessary to control the passage, however, now this measurement is carried out only in static mode. Measurement of dimensions in dynamics based on piezoelectric elements has an error unacceptable by the legislation of the Russian Federation. The developed method will increase the accuracy, which will lead to a mass measurement of dimensions, and will allow to maintain in good condition the roads of federal and local destination.

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