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The universal measurement device for barrel angle acquisition in the simulated fire training of armored vehicles is designed and implemented. The device eventually becomes a measurement element in universal mounting simulated shooting training system. This paper presents the principles and methods of this device in details. The ADXL345 three-axis accelerometer is adopted in the tilt and pitch angles' acquisition of this device to achieve high accuracy requirements. In the measurements of azimuth angle, the groove coupler and grating disk are used as the core counting elements for the angle's measurement. The solving process is conducted in the device for the collected data of each angle of the barrel, and the data transfer and display are achieved though serial interface or LCD. [ABSTRACT FROM AUTHOR]