Safety critical control system that includes control logic or machine readable instructions that selectively locks or enables the control system based on one or more machine implemented state machines that includes states associated with detection or matching of one or more predetermined signals on distinct conduction paths between elements of the control system and related methods
US9599970B2 · kind B2 · utility
1Cited by
10References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 3, 2014 |
| Grant date | Mar 21, 2017 |
| Priority date | — |
| Expiry date | Jan 28, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/10
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
This disclosure involves a method of controlling a safety critical control device, the method comprising: sending user inputs to a first state machine, identifying user inputs by the first state machine, determining the correct state to communicate to a second state machine, the correct state being determined by selecting one state of a plurality of states depending on the user inputs, communicating the correct state to a second state machine through a control bus, and determining the correct state for the second state machine based on communication from the control bus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.