David is pursuing his PhD in the Pister group at UC Berkeley. He graduated from the University of Washington in 2007 and spent several years in government and academic research, including positions at Sandia National Laboratories, Livermore and McMurdo Station, Antarctica. His research interests include wireless sensor networks, data fusion, MEMS design, and robotics. He is formerly a National Defense Science and Engineering Graduate (NDSEG) fellow.
Single Chip Mote [BPN803]
To exploit the true potential of ubiquitous connectivity at scale, wireless nodes in a sensor network need to have a long lifetime and low cost. To reduce the cost of a sensor node, complete system integration is needed, including communication, computation, sensing, and power management on a single integrated circuit with zero external components. Therefore, a Single Chip Mote sensor node is being developed that is intended to operate from harvested energy, requiring no external battery or other components. Low-power wireless communication plays a key role in extending the lifetime of a wireless sensor due to high active power consumption of the radio in comparison to the rest of the node. Traditional transceiver architectures also require off-chip components such as crystal oscillators and passives, which must be eliminated in order to enable a completely monolithic solution. The elimination of external components, combined with reduction in transceiver power consumption, will truly enable perpetual operation of wireless nodes at low-cost and hence realize the vision of ubiquitous connectivity at scale.