Method and system of detecting faults in a breathing assistance device
First Claim
1. A method of detecting a fault condition in a breathing assistance system, comprising:
- receiving a plurality of pressure measurements taken over time, each pressure measurement comprising a measurement of a gas pressure in the breathing assistance system;
determining a filtered pressure error value based at least on the plurality of pressure measurements and a target pressure value, the determination including filtering a plurality of values;
receiving a plurality of flow rate measurements taken over time, each flow rate measurement comprising a measurement of a gas flow rate in the breathing assistance system;
filtering the plurality of flow rate measurements to determine a filtered flow rate value; and
determining the existence of a fault condition based at least on the filtered pressure error value and the filtered flow rate value.
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Accused Products
Abstract
A breathing assistance system with functionality for detecting the existence of a fault condition may include a pressure detector, a flow detector and a fault detection system. The pressure detector may take pressure measurements, each measurement comprising a measurement of a gas flow rate in the breathing assistance system. The flow detector may take flow rate measurements, each flow rate measurement comprising a measurement of has flow rate in the breathing assistance system. The fault detection system may process the pressure measurements and/or flow rate measurements to determine the existence of a fault condition associated with the breathing assistance system.
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Citations
72 Claims
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1. A method of detecting a fault condition in a breathing assistance system, comprising:
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receiving a plurality of pressure measurements taken over time, each pressure measurement comprising a measurement of a gas pressure in the breathing assistance system; determining a filtered pressure error value based at least on the plurality of pressure measurements and a target pressure value, the determination including filtering a plurality of values; receiving a plurality of flow rate measurements taken over time, each flow rate measurement comprising a measurement of a gas flow rate in the breathing assistance system; filtering the plurality of flow rate measurements to determine a filtered flow rate value; and determining the existence of a fault condition based at least on the filtered pressure error value and the filtered flow rate value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A breathing assistance system, comprising:
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a pressure detector operable to take pressure measurements, each pressure measurement comprising a measurement of a gas pressure in the breathing assistance system; a flow detector operable to take flow rate measurements, each flow rate measurement comprising a measurement of a gas flow rate in the breathing assistance system; and a fault detection system communicatively coupled to the pressure detector and the flow detector, the fault detection system operable to; receive a plurality of pressure measurements taken over time from the pressure detector; determine a filtered pressure error value based at least the plurality of pressure measurements and a target pressure value, the determination including filtering a plurality of values; receive a plurality of flow rate measurements taken over time, each flow rate measurement comprising a measurement of a gas flow rate in the breathing assistance system; filter the plurality of flow rate measurements to determine a filtered flow rate value; and determine the existence of a fault condition based at least on the filtered pressure error value and the filtered flow rate value. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48)
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49. A method of detecting a fault condition in a breathing assistance system, comprising:
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receiving a plurality of pressure measurements taken over time, each pressure measurement comprising a measurement of a gas pressure in the breathing assistance system; determining a filtered pressure measurement by processing the plurality of pressure measurements to reduce the effects of outlying pressure measurements; comparing the filtered pressure measurement with a target pressure value to determine a pressure error value; determining the existence of a fault condition based at least on the determined pressure error value. - View Dependent Claims (50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60)
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61. A method of detecting a fault condition in a breathing assistance system, comprising:
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receiving a plurality of pressure measurements taken over time, each pressure measurement comprising a measurement of a gas pressure in the breathing assistance system; comparing the plurality of pressure measurements with a target pressure value to determine a plurality of pressure error values; determining a filtered pressure error value by processing the plurality of pressure error values to reduce the effects of outlying pressure error values; determining the existence of a fault condition based at least on the filtered pressure error value. - View Dependent Claims (62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72)
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Specification