Wireless flexible magnetic sensor based on magnetothermal effect, and preparation method and detection method thereof
US11846686B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 2022 |
| Grant date | Dec 19, 2023 |
| Priority date | — |
| Expiry date | Jan 11, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/032
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present disclosure provides a wireless flexible magnetic sensor based on magnetothermal effect, and a preparation method and a detection method thereof. The magnetic sensor includes an aerogel substrate, and magnetic nanoparticles having magnetothermal effect that are attached to a surface of the aerogel substrate. The magnetic sensor is placed in the alternating magnetic field to be measured, and then a trigger signal is generated by a data collecting device and sent to an infrared camera. The infrared camera can collect temperature distribution information at different instants of time from the surface of the magnetic sensor. A curve of temperature rise changes at different positions on the surface of the magnetic sensor can be obtained by analyzing a temperature distribution image captured by the infrared camera. Thus, a spatial distribution of the strength of the alternating magnetic field at different positions on the surface of the sensor can be determined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.