Hall measurement system with rotary magnet
US9041389B2 · kind B2 · utility
19Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 7, 2012 |
| Grant date | May 26, 2015 |
| Priority date | — |
| Expiry date | Jun 21, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D11/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
One or more embodiments are directed to a motor configured to rotate at least one magnet at a first frequency, a sensor configured to generate a reference signal of the at least one magnet's rotation, and a lock-in detection system configured to receive the reference signal, supply an excitation current at a second frequency to a device under test, measure a voltage from the device under test and demodulate the second frequency, and demodulate the first frequency from the measured voltage using the reference signal to obtain a Hall voltage associated with the device under test.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.