METHOD FOR DIAGNOSING A FAULT IN A CABIN TEMPERATURE CONTROL SYSTEM OF AN AIRCRAFT

• US 20170052072A1
• Filed: 02/21/2014
• Published: 02/23/2017
• Est. Priority Date: 02/21/2014
• Status: Abandoned Application

• Current Assignee: Taleris Global LLP
• Original Assignee: Taleris Global LLP
• Inventors: BEAVEN, Frank, HORABIN, Robert William, HOWARD, Julia Ann
• Application Number:
  US15/120,019
• Publication Number:
  US 20170052072A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B64D 13/06 the air being conditioned pressurising B64D13/02
• CPC Class Codes: B64D 2013/0655 with zone or personal climate controls
• CPC Class Codes: G01K 15/007 Testing
• CPC Class Codes: G01K 2201/02 in vehicles
• CPC Class Codes: G05B 23/0235 based on a comparison with predetermined threshold or range, e.g. "classical methods", carried out during normal operation; threshold adaptation or choice; when or how to compare with the threshold
• CPC Class Codes: G05B 23/0267 Fault communication, e.g. human machine interface [HMI]
• CPC Class Codes: G07C 5/008 communicating information to a remotely located station transmission systems for measured values G08C

Abstract

A method of diagnosing a fault in a cabin temperature control system of an air-conditioning system of an aircraft includes transmitting multiple temperature sensor readings from temperature sensors operably coupled to the air-conditioning system, comparing the transmitted multiple temperature sensor readings to related reference values, and diagnosing a fault in the cabin temperature control system based on the comparing.

Claims

1. A method of diagnosing a fault in a cabin temperature control system of an air-conditioning system of an aircraft, the method comprising:

transmitting multiple temperature sensor readings from temperature sensors, wherein the temperature sensors are operably coupled to the air-conditioning system;

comparing the transmitted multiple temperature sensor readings to related reference values;

diagnosing, by a controller, a fault in the cabin temperature control system based on the comparing; and

providing an indication of the diagnosed fault.

2. The method of claim 1, wherein the multiple temperature sensor readings are transmitted during a phase of flight.

3. The method of claim 2, further comprising calculating one of a median, maximum, minimum, or standard deviation of the multiple temperature sensor readings transmitted during the phase of flight.

4. The method of claim 2, wherein transmitting the multiple temperature sensor readings comprises transmitting multiple temperature sensor readings during a pre-flight, a cruise, or a post-flight.

5. The method of claim 2, wherein transmitting the multiple temperature sensor readings comprises transmitting multiple temperature sensor readings during multiple phases of flight.

6. The method of claim 5, further comprising calculating one of a median, maximum, minimum, or standard deviation of the multiple temperature sensor readings transmitted for each of the multiple phases of flight where data is transmitted.

7. The method of claim 1, wherein the controller utilizes an algorithm to diagnose the fault.

8. The method of claim 1, wherein the aircraft has multiple zones within a cabin of the aircraft.

9. The method of claim 8, wherein the multiple temperature sensor readings of the air-conditioning system comprise at least one air temperature sensor reading from within at least one of the multiple zones, wherein a duct temperature is feeding the at least one of the multiple zones.

10. The method of claim 9, wherein diagnosing the fault comprises diagnosing a fault of an air temperature sensor when the comparing indicates an air temperature measurement is out of bounds and the duct temperature is within bounds.

11. The method of claim 8, wherein the multiple temperature sensor readings comprise air temperature readings from multiple zones.

12. The method of claim 11, wherein diagnosing the fault comprises diagnosing the fault of one of the temperature sensors when the comparing indicates an air temperature measurement in one of the zones is out of bounds.

13. The method of claim 12, wherein the fault is diagnosed with the one of the temperature sensors when the comparing indicates an air temperature measurement in an adjacent zone is in bounds.

14. The method of claim 1, wherein comparing the transmitted data to a reference value comprises determining a difference between related temperatures in the air-conditioning system and comparing the difference to a reference difference value.

15. The method of claim 3, wherein transmitting the multiple temperature sensor readings comprises transmitting multiple temperature sensor readings during a pre-flight, a cruise, or a post-flight.

16. The method claim 3, wherein transmitting the multiple temperature sensor readings comprises transmitting multiple temperature sensor readings during multiple phases of flight.

17. The method claim 4, wherein transmitting the multiple temperature sensor readings comprises transmitting multiple temperature sensor readings during multiple phases of flight.

18. The method of claim 9, wherein the multiple temperature sensor readings comprise air temperature readings from multiple zones.

19. The method of claim 10, wherein the multiple temperature sensor readings comprise air temperature readings from multiple zones.