Maxim Integrated Products, Inc.

Hanking Electronics, Ltd.

Simone Sabatelli

Leonardo Sala

Gabriele Cazzaniga

Igino Padovani

The present invention relates to a signal processor, and more particularly, to systems, devices and methods of using a comprehensive sensor fusion algorithm to integrate sensor data collected by accelerometers, gyroscopes and magnetometers. The signal processor dynamically applies a Complementary Filter to merge a rotation based gyro output and a FQA output that is obtained by combining acceleration rates and magnetic field magnitudes. Therefore, motion information is derived to generate a motion control signal. Such a comprehensive sensor fusion algorithm significantly reduces the complexity of computation, and the power and area overhead is controlled. As a result, the signal processor may be implemented based on local computation capability of a sensor system, and its integration within such a sensor system is made possible without relying on an external microprocessor.

Comprehensive sensor fusion algorithm

Various embodiments of the invention provide for fully-integrated, low-latency power reduction in multi-sensor systems. In certain embodiments, power consumption is minimized by modulating power and mode of operation of gyroscopes, magnetometers, and accelerometers under certain conditions. Certain embodiments provide for reduction of power consumption by the use of emulated gyroscope data.

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Pisa, Italy

Simone Sabatelli