Energy harvesting and control for sensor node
US9882428B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 15, 2013 |
| Grant date | Jan 30, 2018 |
| Priority date | — |
| Expiry date | May 16, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D10/00
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An integrated circuit, such as included as a portion of a sensor node, can include a regulator circuit having an input coupleable to an energy harvesting transducer. The integrated circuit can include a wireless receiver circuit coupled to the regulator circuit and configured to wirelessly receive at least enough operating energy to establish operation of the sensor node without requiring the energy harvesting transducer. The integrated circuit can include a digital processor circuit coupled to the regulator circuit and a power management processor circuit. The digital processor circuit or one or more other circuits can include a subthreshold operational mode established by the power management processor circuit based on the selected energy consumption level. For example, establishing the subthreshold operational mode can include adjusting or selecting a supply voltage so as to establish subthreshold operation of a field effect transistor (FET) in the digital processor circuit or other circuits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.