Design of miniature 9 DoF inertial module with GSM/GPRS and Bluetooth connectivity

The paper represents an innovative miniature 9DoF IMU system based on MEMS digital output inertial sensors which may read the linear and angular rate accelerations and the magnetic field at all three axes, the temperature up and down of the board by integrated analog and digital sensors and transmits the measured data by Bluetooth or GPRS link to the remote servers or devices. The integrated Bluetooth module in the GSM/GPRS modem supports hands-free profile which allows to transmit also the voice with the integrated microphone.