In this work, a digital circuit is proposed to eliminate the dependence of measurements of tri-axial accelerometers from the spatial orientation of the sensor. It is suitable for a large number of applications, from wearable system to human activity recognition and prediction. The circuit implements a new, hardware friendly, vector rotation algorithm which contributes to reduce the occupied area and the power dissipation. The design has been targeted to FPGA and std_cells in 65 nm CMOS technology. In the second case, it returns a power dissipation of 1 μW and an area of about 0.024 mm2. The obtained results show the possibility to integrate the module with the embedded circuitry of inertial sensors.
Low-Power Integrated Circuit for Orientation Independent Acquisitions from Smart Accelerometers
De Vita A.;Licciardo G. D.
;Femia A.;Di Benedetto L.;Rubino A.;
2020-01-01
Abstract
In this work, a digital circuit is proposed to eliminate the dependence of measurements of tri-axial accelerometers from the spatial orientation of the sensor. It is suitable for a large number of applications, from wearable system to human activity recognition and prediction. The circuit implements a new, hardware friendly, vector rotation algorithm which contributes to reduce the occupied area and the power dissipation. The design has been targeted to FPGA and std_cells in 65 nm CMOS technology. In the second case, it returns a power dissipation of 1 μW and an area of about 0.024 mm2. The obtained results show the possibility to integrate the module with the embedded circuitry of inertial sensors.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
