Maintenance-free cooling device
US11790754B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 16, 2021 |
| Grant date | Oct 17, 2023 |
| Priority date | — |
| Expiry date | Apr 13, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/3815
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for monitoring a helium compressor and a magnetic resonance imaging device may include photoelectric converter configured to monitor a status current of a helium compressor; a dry contact signal converter having a dry contact switch and a signal converter. The dry contact switch may include a first pair of switch contacts connected to an output of the photoelectric converter and a second pair of switch contacts connected to an output voltage of the helium compressor. The signal converter may be configured to collect an action signal of the dry contact switch, and convert corresponding fault information into a network signal and send the same to a network server. Personnel may be notified of the fault information in a preset communication mode using a preset communication address.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.