A self-powered 2-dimensional motion detection chip

We demonstrate a self-powered chip to detect motion which enables constant, non-invasive monitoring. The chip was implemented in a standard 0.18 μm CMOS process. A P-N junction photodiode array was fabricated in the chip to detect when light is blocked by the movement of a hand or finger. The interface circuit detects the change between the shadowing and the exposure to determine the specific movement. This entire chip operates without any off-chip power supply and provides digitized outputs including 1 bit direction output and an 8 bits output indicative of the velocity in two dimensions.

[1]  Hongjiang Song,et al.  CMOS sensor for sun tracking , 2013, 2013 IEEE SENSORS.

[2]  Suhuai Luo,et al.  A dynamic motion pattern analysis approach to fall detection , 2004, IEEE International Workshop on Biomedical Circuits and Systems, 2004..

[3]  Alexander Fish,et al.  CMOS Image Sensors With Self-Powered Generation Capability , 2006, IEEE Transactions on Circuits and Systems II: Express Briefs.

[4]  Hongjiang Song,et al.  On-chip sensor for light direction detection. , 2013, Optics letters.

[5]  I-Ming Chen,et al.  Integration of Sensing and Feedback Components for Human Motion Replication , 2010, 2010 International Conference on Body Sensor Networks.

[6]  Paul Lukowicz,et al.  Textile Pressure Sensor for Muscle Activity and Motion Detection , 2006, 2006 10th IEEE International Symposium on Wearable Computers.

[7]  Ankit Chaudhary,et al.  Intelligent Approaches to interact with Machines using Hand Gesture Recognition in Natural way: A Survey , 2011, ArXiv.

[8]  C. Yuen,et al.  Review on energy harvesting and energy management for sustainable wireless sensor networks , 2011, 2011 IEEE 13th International Conference on Communication Technology.

[9]  I.P.I. Pappas,et al.  A reliable, gyroscope based gait phase detection sensor embedded in a shoe insole , 2002, Proceedings of IEEE Sensors.