Design and fabrication of three axes accelerometer

Technology can provide safety in physical practices and improving the performance of these activities, so manufacturing of equipments for these purposes has been considered widely. The aim of the present paper was design and fabrication of three-axis accelerometer. hree acceleration sensors, three gyroscopes for angular velocity measurement, a microcontroller for converting analog data to digital, a semiconductor memory for storing the sampled data, a rechargeable battery and a spreadsheet in MATLAB environment have been used. In order to examine the validity of fabricated instrument, the earth gravity acceleration in three perpendicular axes have been measured and compared with 9.8m/S2. In order to examine the reliability of the fabricated accelerometer the ICC and test-re-test method have been used. The results showed that the accelerometer has both reliability and validity. Due to its special features, it enables us to sample in the offline mode and wireless manner. Such system may be used for measuring the acceleration of the athletes in wide variety of applications.