Location dependent control access in a process control system
US9244455B2 · kind B2 · utility
17Cited by
12References
54Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 5, 2008 |
| Grant date | Jan 26, 2016 |
| Priority date | — |
| Expiry date | Jan 21, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P90/02
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method of accessing an element in a process control environment using a portable communicator includes defining a plurality of control areas within the process control environment, determining a position of a user operating a portable communicator with respect to one or more of the control areas, establishing an identity of the user, and selectively allowing the user to access an element within the process control environment via the portable communicator depending on the determined position of the user with respect to the one or more control areas and on the identity of the user.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.