Device in a process system for detecting events
US6017143A · kind A · utility
174Cited by
95References
65Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 28, 1996 |
| Grant date | Jan 25, 2000 |
| Priority date | — |
| Expiry date | Mar 28, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B23/0278
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A process device couples to a process control loop. The process device receives process signals. A memory in the process device contains a nominal parameter value and a rule. Computing circuitry calculates a statistical parameter of the process signal and operates on the statistical parameter and the stored nominal value based upon the stored rule and responsively provides an event output based upon the operation. Output circuitry provides an output in response to the event output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.