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US 10,483,792 B2Granted
Methods and apparatus to prevent a false trigger of a shutdown function of a process control component
AssigneeFisher Controls International LLC
InventorStephen George Seberger
Life of this patent
Estimating the term…
Abstract
Methods and apparatus for enhancing reserve power units are described. An example apparatus includes a power source to operate a process control component and a power conditioner to provide power during a disruption of power from the power source to prevent a false trigger of a shutdown function of the process control component.
Claims20
An apparatus comprising:
- a power source configured to operate a process control component;
- a power conditioner configured to prevent a false trigger of a shutdown function of the process control component by providing power, based on energy stored at the power conditioner, from the power conditioner to the process control component during a disruption of power from the power source to the process control component that is less than a threshold disruption time;
- and
- a reserve power unit operable independently from the power conditioner, the reserve power unit configured to move the process control component to a shutdown position by providing power, based on energy stored at the reserve power unit, from the reserve power unit to the process control component in response to a depletion of the energy stored at the power conditioner, the depletion caused by the disruption of power exceeding the threshold disruption time.
1 more element
A method comprising:
- providing power from a power source to a process control component;
- preventing a false trigger of a shutdown function of the process control component by providing power, based on energy stored at a power conditioner, from the power conditioner to the process control component during a disruption of power from the power source to the process control component that is less than a threshold disruption time;
- and
- moving the process control component to a shutdown position by providing power, based on energy stored at a reserve power unit, from the reserve power unit to the process control component in response to a depletion of the energy stored at the power conditioner, the depletion caused by the disruption of power exceeding the threshold disruption time, the reserve power unit being operable independently from the power conditioner.
1 more element
An apparatus comprising:
- an energy storage device including a first storage component and a second storage component operable independently from the first storage component, the first storage component configured to prevent a false trigger of a shutdown function of a process control component by providing power, based on energy stored at the first storage component, from the first storage component to the process control component during a disruption of power from a power source to the process control component that is less than a threshold disruption time, the second storage component configured to move the process control component to a shutdown position by providing power, based on energy stored at the second storage component, from the second storage component to the process control component in response to a depletion of the energy stored at the first storage component, the depletion caused by the disruption of power exceeding the threshold disruption time.
Dependencies are inferred from the claim text.