Sensor node with wireless energy harvesting and method for operating the sensor node
US12015277B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 25, 2022 |
| Grant date | Jun 18, 2024 |
| Priority date | — |
| Expiry date | Nov 2, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A sensor node is provided having a radio frequency (RF) circuit and a sensor interface circuit. The RF circuit wirelessly harvests energy from an external device such as a smart phone to produce a voltage at an output to charge a storage capacitor. The sensor interface circuit is configured to communicate with a sensor. In response to a request from the external device, the sensor node provides a voltage level of the capacitive element to the external device. The external device uses the voltage level to determine capabilities of the sensor node and to control sensing functions of the sensor node. In another embodiment, a method is provided to operate the sensor node.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.