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An energy harvesting sensor system architecture emerges through multiple generations of sensor development and deployment for smart building applications. Energy-harvesting sensors for monitoring plug-loads and circuit panels, light fixtures, air flow, hot water flow, and door openings are presented. This article is part of a special issue on energy harvesting.
We propose an ultra-low power interconnect bus for millimeter-scale wireless sensor nodes. Using only 4 IO pads, the bus minimizes the required chip real estate, enabling ultrasmall form factors in modular sensor node designs. Low power is achieved using a “clockless” design of member nodes while aggressive power gating allows an ultra-low power standby mode with only 53 gates powered on. An integrated...
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