Magnetic field sensors with self test
US9739846B2 · kind B2 · utility
13Cited by
56References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 3, 2014 |
| Grant date | Aug 22, 2017 |
| Priority date | — |
| Expiry date | Dec 18, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D2218/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system includes a magnetic target and a magnetic field sensor. The magnetic field sensor comprises an output node; a circuit to detect a magnetic field produced by the magnetic target; and a processor. The processor may be configured to transmit a signal onto the output node representing the detected magnetic field; detect whether the transmitted signal is interrupted by an external source; and, if the signal is interrupted, initiate a self-test of the apparatus. Corresponding methods and apparatuses are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.