Detection of plunger movement in DC solenoids through current sense technique
US10895608B2 · kind B2 · utility
3Cited by
8References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 11, 2019 |
| Grant date | Jan 19, 2021 |
| Priority date | — |
| Expiry date | Apr 11, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F2007/185
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus and method of detecting movement of a plunger of the solenoid includes detecting a peak (IPEAK) in a current signal applied to a coil of the solenoid. A predetermined threshold is added to the current signal applied to the coil of the solenoid to generate a level shifted signal. The level shifted signal and the peak signal are compared to detect movement of a plunger of the solenoid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.