Digital valve and pump control system
US4078196A · kind A · utility
8Cited by
4References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 1, 1976 |
| Grant date | Mar 7, 1978 |
| Priority date | — |
| Expiry date | Mar 1, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P90/02
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A control unit is connected, via a data bus, to a plurality of remote field controllers, each of which is in turn connected to a motor starter and status contacts of a respective valve or pump. Binary codes are communicated between the control unit and field controllers to convey status information, regarding a valve or pump, to the control unit. Likewise, command codes are conveyed from the control unit to a pump or valve to effect a selected operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.