Ultra-low Power Sensor Sampling Solutions for Energy Harvesting Applications
(Room 101 B)
10 Jun 15
1:50 PM
-
2:30 PM
Tracks:
EH/Power, Energy Harvesting, Energy Harvesting for Wireless Sensor Networks
To effectively utilize the extremely limited available power inherent in energy harvesting applications, exercising the most energy-aware embedded design practices is an absolute must. This presentation details several, practical, ultra-low power (e.g. 1uA) sensor sampling embedded solutions implemented using low-cost, off-the-shelf components and readily available sensors. The presentation will build-up, through a series of examples, a complete signal-chain starting from a harvested energy source, sensor, data conversion, ultra-low power embedded processor and concluding with a user interface. The importance of a duty-cycle based system architecture, power-gating external sensors, burst processing and data conversion, energy-aware firmware and the impact of supply voltage, temperature and stray capacitance will be reviewed. The concept of managing an overall restricted system power budget will be the fundamental undertone of this presentation. Using the techniques discussed, a working ultra-low power sensor sampling embedded system will be demonstrated as part of this interactive presentation.