Systems and methods for damper performance diagnostics
AssigneeJohnson Controls Technology Company
InventorsTroy A. Goldschmidt, Dimitri S. Papadopoulos
Life of this patent
Estimating the term…
Abstract
A computerized method for diagnosing a damper condition in a flow control unit includes providing a control signal to a damper. The control signal instructs the damper to move into a target position or to achieve a target flow rate through the flow control unit. The method further includes receiving pressure information including one or more pressure measurements from a differential pressure sensor of the flow control unit and using the pressure information and the control signal to conduct a damper performance diagnostic. The damper performance diagnostic includes at least one of: a stuck damper diagnostic, a predictive damper failure diagnostic, an improperly-sized damper diagnostic, and a damper leakage diagnostic.
Claims20
A computerized method for diagnosing a damper condition in a flow control unit, the method comprising:
- providing a control signal to a damper, wherein the control signal instructs the damper to move into a target position or to achieve a target flow rate through the flow control unit;
- obtaining a differential pressure value using a measurement from a pressure sensor of the flow control unit;
- using the differential pressure value and the control signal to conduct a damper performance diagnostic process including at least one of:
- a stuck damper diagnostic process, a predictive damper failure diagnostic process, an improperly-sized damper diagnostic process, and a damper leakage diagnostic process;
- and
- outputting a result of the damper performance diagnostic process to at least one of:
- a user interface device, a local memory, and communications electronics.
A system for diagnosing a damper condition in a flow control unit, the system comprising:
- a pressure sensor configured to obtain one or more pressure measurements in the flow control unit;
- and
- a controller configured to obtain a differential pressure value using the one or more pressure measurements and to provide a control signal to a damper, wherein the control signal instructs the damper to move into a target position or to achieve a target flow rate through the flow control unit,
- wherein the controller is further configured to use the differential pressure value and the control signal to conduct a damper performance diagnostic process including at least one of:
- a stuck damper diagnostic process, a predictive damper failure diagnostic process, an improperly-sized damper diagnostic process, and a damper leakage diagnostic process;
- wherein the controller is further configured to output a result of the damper performance diagnostic process to at least one of:
- a user interface device, a local memory, and communications electronics.
One or more non-transitory computer-readable media having instructions for diagnosing a damper condition in a flow control unit stored therein, the instructions being executable by one or more processors to cause the one or more processors to perform operations comprising:
- providing a control signal to a damper, wherein the control signal instructs the damper to move into a target position or to achieve a target flow rate through the flow control unit;
- obtaining a differential pressure value using a measurement from a pressure sensor of the flow control unit;
- using the differential pressure value and the control signal to conduct a damper performance diagnostic process including at least one of:
- a stuck damper diagnostic process, a predictive damper failure diagnostic process, an improperly-sized damper diagnostic process, and a damper leakage diagnostic process;
- and
- outputting a result of the damper performance diagnostic process to a user interface device,
- wherein the damper performance diagnostic is conducted by a local controller for the flow control unit using only the differential pressure value as a measured variable.
Dependencies are inferred from the claim text.