Motor current based air circuit obstruction detection
AssigneeHoneywell International Inc.
InventorsRaj Mohan Bharadwaj, David Lazarovich
Life of this patent
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Abstract
A method for determining an obstruction in an air circuit, the air circuit having a fan and a motor that drives the fan, includes the steps of obtaining a load current of a motor coupled to the air circuit, comparing the load current to a predetermined value, and determining the obstruction using the load current and the predetermined value.
Claims20
A method for determining an obstruction in an air circuit, the air circuit comprising a fan and a motor that drives the fan, for an environmental control unit, the method comprising the steps of:
- obtaining a load current of the motor;
- comparing the load current to a predetermined value;
- and
- determining the obstruction using the load current and the predetermined value.
A program product for determining an obstruction in an air circuit for an environmental control unit, the program product comprising:
- a program configured to at least facilitate:
- obtaining a load current of a motor coupled to the air circuit;
- comparing the load current to a predetermined value;
- and
- determining the obstruction using the load current and the predetermined value;
- and
- a computer readable signal bearing media bearing the program.
A system for determining an obstruction in an air circuit for an environmental control unit, the system comprising:
- a sensor configured to at least facilitate obtaining a load current of a motor coupled to the air circuit;
- and
- a processor coupled to the sensor, the processor configured to at least facilitate:
- comparing the load current to a predetermined value;
- and
- determining the obstruction using the load current and the predetermined value.
Dependencies are inferred from the claim text.