SYSTEM AND METHOD FOR MONITORING A MESHED CURRENT RETURN NETWORK OF AN AIRCRAFT

• US 20150293163A1
• Filed: 10/21/2013
• Published: 10/15/2015
• Est. Priority Date: 10/29/2012
• Status: Abandoned Application

• Current Assignee: Safran Electrical & Power
• Original Assignee: Labinal Power Systems
• Inventors: Ayme, Arnaud Camille, Lebreton, Thibaud
• Application Number:
  US14/438,772
• Publication Number:
  US 20150293163A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B64D 2221/00 Electric power distribution systems onboard aircraft
• CPC Class Codes: G01R 15/14 Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
• CPC Class Codes: G01R 31/008 on air- or spacecraft, railway rolling stock or sea-going vessels
• CPC Class Codes: G01R 31/58 Testing of lines, cables or conductors testing of electric windings G01R31/72
• CPC Class Codes: H02J 13/00006 characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
• CPC Class Codes: H02J 2310/44 for aircrafts
• CPC Class Codes: Y02E 60/00 Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• CPC Class Codes: Y04S 10/00 Systems supporting electrical power generation, transmission or distribution

Abstract

A method for monitoring a meshed current-return network on an aircraft, the meshed network including at least two sub-networks electrically connected by a plurality of electrical junctions, the method including: measuring a current intensity in at least one electrical junction in which a nominal current is circulating for given flight conditions of the aircraft; wirelessly transmitting the measured current intensity value; receiving the measured current intensity; comparing the measured current intensity with a reference intensity of the nominal current determined for the electrical junction for the given flight conditions; and diagnosing soundness of the electrical junction following the comparing.

Claims

1-12. -12. (canceled)

13. A method for monitoring a meshed current-return network on an aircraft, the meshed network including at least two sub-networks electrically connected by a plurality of electrical junctions, the method comprising:

measuring a current intensity in at least one electrical junction in which a nominal current is circulating for given flight conditions of the aircraft;

wirelessly transmitting the measured current intensity value;

receiving the measured current intensity;

comparing the measured current intensity with a reference intensity of the nominal current determined for the electrical junction for the given flight conditions; and

diagnosing soundness of the electrical junction following the comparing.

14. A monitoring method according to claim 13, wherein the reference intensity of the nominal current determined for the electrical junction for the given flight conditions is obtained by feedback over a plurality of flights of the aircraft.

15. A monitoring method according to claim 13, further comprising determining a fault in the junction if its measured current intensity is lower than a fault intensity threshold.

16. A monitoring method according to claim 13, further comprising confirming the soundness of the junction if its measured current intensity is higher than a soundness intensity threshold.

17. A monitoring method according to claim 13, further comprising:

measuring a current intensity in a plurality of electrical junctions in a region of the meshed network in which nominal currents circulate for given flight conditions;

wirelessly transmitting the values of the current intensities measured;

receiving the current intensities measured;

comparing the current intensities measured with reference intensities of the nominal currents determined for the electrical junctions in the region for the given flight conditions; and

determining a fault in a given junction in the region if its measured current intensity is less than its reference intensity of the nominal current while the other junctions in the region have a measured current intensity which is higher than their reference intensity of the nominal current.

18. A system for monitoring a meshed current-return network in an aircraft, the meshed network comprising at least two sub-networks connected electrically by a plurality of electrical junctions, the system comprising:

at least one intensity sensor associated with at least one electrical junction configured to circulate a nominal current for given flight conditions of the aircraft, the intensity sensor configured to measure a current intensity, the intensity sensor comprising means for wireless transmission of the value of the current intensity measured; and

a maintenance computer comprising wireless data reception means, the maintenance computer configured to compare a value of the current intensity measured with a reference intensity of the nominal current determined for the electrical junction for given flight conditions of the aircraft, to determine soundness of the electrical junction.

19. A system according to claim 18, wherein the intensity sensor is passive.

20. A system according to claim 18, wherein the intensity sensor comprises radio-wave transmission means, or is of RFID type.

21. A system according to claim 18, wherein the intensity sensor is configured to take an intensity measurement by a giant magnetoresistor.

22. A system according to claim 18, wherein a plurality of electrical junctions in a same region of the meshed network each comprise at least one intensity sensor, and the maintenance computer is configured to compare the value of the current intensity measured for each electrical junction with a reference intensity of the nominal current determined for the electrical junction to determine the soundness of the electrical junction.

23. A meshed current-return network in an aircraft, comprising at least one system according to claim 18.

24. An aircraft, comprising a meshed current-return network according to claim 23.