AVIONIC DATA VALIDATION SYSTEM

• US 20110252295A1
• Filed: 04/09/2010
• Published: 10/13/2011
• Est. Priority Date: 04/09/2010
• Status: Abandoned Application

• Current Assignee: United Technologies Corporation (Raytheon Technologies Corporation d/b/a RTX)
• Original Assignee: United Technologies Corporation (Raytheon Technologies Corporation d/b/a RTX)
• Inventors: Beacham, William H., Mattei, David M.
• Application Number:
  US12/757,449
• Publication Number:
  US 20110252295A1
• Time in Patent Office: Days
• US Class Current: 714/807
• CPC Class Codes: G06F 11/1004 to protect a block of data words, e.g. CRC or checksum G06F11/1076 takes precedence; security arrangements for protecting computers or computer systems against unauthorized activity G06F21/00
• CPC Class Codes: G07C 5/006 Indicating maintenance
• CPC Class Codes: G07C 5/008 communicating information to a remotely located station transmission systems for measured values G08C

Abstract

An example method of verifying avionic data includes establishing a first cyclical redundancy check value associated with a data file. The first cyclical redundancy value is established on an aircraft. The method transmits the data file from the aircraft to a ground system. The method receives a second cyclical redundancy check value associated with the data file. The second cyclical redundancy check value is established by the ground system. The method determines the transmitted data file integrity by comparing the first cyclical redundancy check value to the second cyclical redundancy check value. An example aircraft avionic data verification arrangement includes a collector device that assembles avionic data into a data file that is transmittable to a ground system. A controller is programmed to provide a first cyclical redundancy check value associated with the data file and to identify errors in the data file received by the ground system based on a comparison between the first cyclical redundancy check value and a second cyclical redundancy check value established by the ground system.

Claims

1. ) A method of verifying avionic data, comprising:

establishing a first cyclical redundancy check value associated with at least one data file, the first cyclical redundancy value established on an aircraft;

transmitting the at least one data file from the aircraft to a ground system;

receiving a second cyclical redundancy check value associated with the at least one data file, the second cyclical redundancy check value established by the ground system; and

determining if the at least one data file was transmitted accurately using the first cyclical redundancy check value and the second cyclical redundancy check value.

2. ) The method of claim 1, including sending a transmission success or fail message from the aircraft to the ground system based on the determining.

3. ) The method of claim 1, including using a certified software code to establish the first cyclical redundancy check value.

4. ) The method of claim 3, wherein avionics equipment on the aircraft is programmed with the certified software.

5. ) The method of claim 3, wherein the certified software code is certified to one or more aviation software assurance standards.

6. ) The method of claim 5, wherein the one or more aviation software assurance standards includes a DO178 software assurance standard.

7. ) The method of claim 1, including using a software code that is not certified to DO178 software assurance levels to establish the second cyclical redundancy check value in the ground system.

8. ) The method of claim 1, wherein the at least one data file is established using software developed to DO178 or other applicable avionic software assurance standards

9. ) A method of verifying avionic data, comprising:

receiving at least one data file from an aircraft, the at least one data file associated with a first cyclical redundancy check value;

establishing a second cyclical redundancy check value for the at least one data file; and

identifying an error in the at least one data file received from the aircraft based on a comparison of the first and second cyclical redundancy check values.

10. ) The method of claim 9, wherein the at least one data file is received at a ground system.

11. ) The method of claim 9, wherein the second cyclical redundancy check value is calculated using a software code that is not certified to DO178 or other applicable avionic software assurance level standard.

12. ) The method of claim 9, wherein the first cyclical redundancy check value is calculated using a software code that is certified to DO178 or other applicable avionic software assurance level standard.

13. ) The method of claim 9, including receiving a message from the aircraft indicating whether the error was identified.

14. ) The method of claim 9, adjusting a maintenance procedure of a component of the aircraft if the received at least one data file has a first cyclical redundancy check value that corresponds to the second cyclical redundancy check value.

15. ) The method of claim 9, wherein the at least one data file includes information obtained from the aircraft during flight.

16. ) An avionic data verification arrangement, comprising:

a collector device that assembles avionic data into at least one data file that is transmittable to a ground system; and

a controller programmed to provide a first cyclical redundancy check value associated with the at least one data file, and to identify errors in the at least one data file received by the ground system based on a comparison between the first cyclical redundancy check value and a second cyclical redundancy check value established by the ground system.

17. ) The arrangement of claim 16, including a transmitter configured to communicate the at least one data file to the ground system.

18. ) The arrangement of claim 17, wherein the transmitter is further configured to communicate a message to the ground system indicating whether errors were identified in the at least one data file received by the ground system.

19. ) The arrangement of claim 16, wherein the controller is programmed with a device application code that is certified to DO178 or other applicable avionic software assurance level standards, the device application code providing the first cyclical redundancy check value associated with the at least one data file.