Electronic control system and process for electromagnetic pump
US6595756B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2001 |
| Grant date | Jul 22, 2003 |
| Priority date | — |
| Expiry date | Dec 27, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K33/10
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An electronic control systems and process for infusion devices and pump configurations can provide highly efficient use of electrical power. The system may include a capacitor which is controlled to partially, but not fully discharge, to provide a power pulse to a pump coil. In this manner, the capacitor remains partially charged and need not be re-charged from a fully discharged state. In addition, the power applied to the coil in a given discharge pulse signal may be controlled to correspond to the power needs of the pump, by controlling the degree to which the capacitor is discharged to produce the pulse signal. A power cut-off switch may be provided to control the discharge of the capacitor such that the capacitor is stopped from discharging prior to the actual end of the armature stroke. The time at which the capacitor discharge is stopped may be selected such that energy remaining in the coil after the capacitor stops discharging is sufficient to continue the pump stroke to the actual end of the stroke. The time at which the capacitor discharge is cut off may be based on the location of the armature in its stroke motion. A power disconnect switch may be provided between the c…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.