A method for integrity testing and verification of flight parameter data of a jettisonable recorder

Abstract

The present invention provides a method for testing and verifying the integrity of the flight parameter data of a jettisonable recorder, comprising the following steps: S1: generating simulated flight parameter data; S2: the jettisonable recorder receives the flight parameter data; S3: storing the flight parameter data in a storage module; S4: the jettisonable recorder enters a maintenance mode, issues a response command after receiving a maintenance command through a high-speed serial bus interface, and starts downloading the flight parameter data of the jettisonable recorder; S5: after the flight parameter data is downloaded, it is compared with the simulated flight parameter data of S1; S6: an abnormal test is performed to verify whether the flight parameter data recorded by the jettisonable recorder is correct under abnormal circumstances. The method realizes the verification of the integrity, correctness and consistency of the flight data recorded by the jettisonable recorder, improves the safety of aircraft flight training, reduces the probability of omissions and errors in traditional recorders, improves the quality of the product, and reduces the maintenance and use costs of the system.

Description

Technical Field

[0001] The invention belongs to the technical field of avionics, and in particular relates to a method for testing and verifying the integrity of flight parameter data of a jettisonable recorder. Background Art

[0002] Since the mid-1980s, when flight data was equipped to the troops, the Air Force has used flight data to complete graded flight accident analysis and investigation, and used flight data information to conduct extensive comprehensive monitoring of aircraft and engines, discovering and eliminating major hidden faults. Flight data has played an important role in quality monitoring, fault analysis and accident investigation, and has effectively ensured the completion of combat training tasks. With the continuous increase in the intensity and difficulty of flight training in the Air Force, higher requirements have been placed on the ability of flight data to survive a crash. The requirement for the ability of flight data to survive a crash is to "ensure 100% data security as the goal."

[0003] The jettisoning recording device has the function of recording flight data and audio data. It is used to record flight parameters and flight status, engine working status, working status of other important systems, pilot control actions and other flight data continuously collected by the audio recording system during the entire flight process, as well as conversations between crew members and ambient sounds in the cockpit. It has an emergency positioning function. When the jettisoning conditions are met, the jettisoning recorder automatically pops out and separates from the fuselage. The built-in Beidou positioning module and radio positioning module start working to allow search personnel to locate and search for the jettisoning recorder. It has strong impact and crash protection capabilities to ensure the crash survivability of the recorded data. It has the function of floating on the water surface to facilitate search and salvage. It has a data unloading function. Flight data and audio data can be unloaded after ground maintenance or the end of the flight.

[0004] In order to ensure the correctness of the flight parameter data recorded by the jettison recording device, it is necessary to test and verify the integrity of the flight parameter data recorded by the jettison recording device. Summary of the invention

[0005] In order to solve the above technical problems, the present invention designs a method for testing and verifying the integrity of the flight parameter data recorded by a jettisonable recorder based on the real-time data collection, recording, status monitoring and other characteristics of the jettisonable recorder, and proposes a method for testing and verifying the integrity, correctness and consistency of the flight parameter data recorded by the jettisonable recorder.

[0006] The object of the present invention is to provide a method for integrity testing and verification of flight parameter data of a jettisonable recorder, the method comprising the following steps:

[0007] S1: Generate simulated flight parameter data;

[0008] S2: The jettisonable recorder periodically receives the simulated flight parameter data from S1 via a high-speed serial bus interface;

[0009] S3: storing the flight parameter data in a storage module in the crash protection component of the jettisonable recorder;

[0010] S4: The jettisonable recorder enters the maintenance mode, sends a response command after receiving the maintenance command through the high-speed serial bus interface, and starts downloading the flight parameter data of the jettisonable recorder;

[0011] S5: After the flight parameter data is downloaded, it is compared with the simulated flight parameter data of S1;

[0012] S6: Perform an abnormal test to verify whether the flight parameter data recorded by the jettisonable recorder under abnormal conditions is correct.

[0013] The verification method provided by the present invention also has the following characteristics: the simulated flight parameter data includes RS422, ARINC429, 1553B standard bus data of each system / equipment of the simulated aircraft and switch quantity, analog quantity, frequency quantity, and synchronizer standard non-bus data.

[0014] The verification method provided by the present invention also has the feature that the periodicity includes 50ms-200ms.

[0015] The verification method provided by the present invention also has the following characteristics: S5 comprises the following steps:

[0016] S5.1: Check whether the data record format, data record name, and data record size are consistent with the corresponding data in the simulated flight parameter data. If they are consistent, proceed to the next step;

[0017] S5.2: Determine whether the recording time of the flight parameter data is consistent with the recording time in the simulated flight parameter data. If they are consistent, proceed to the next step;

[0018] S5.3: Use the datcheck data frame / packet check tool to check the data frames and packets of the flight data recorded by the jettisonable recorder;

[0019] S5.4: By comparing the hexadecimal source code value of the flight parameter data, determine whether the aircraft model, aircraft number, flight subject, engine status, and product serial number are consistent with the simulated flight parameter data.

[0020] The verification method provided by the present invention also has the following feature: the flight parameter data recording time in S5.2 refers to the time when the jettisonable recorder starts recording when it is powered on and the time when the recording stops when it is powered off.

[0021] The verification method provided by the present invention also has the following characteristics: S6 comprises the following steps:

[0022] S6.1: During the data uploading process, the jettisonable recorder is powered off and the flight parameter data of the jettisonable recorder is checked for a power-off mark.

[0023] S6.2: Restore the flight parameter data recorded by the jettisonable recorder and check whether the last 1s of the flight parameter data has been processed with incomplete frame data.

[0024] The verification method provided by the present invention also has the following feature: the incomplete frame data in S6.2 refers to the data whose last data packet length is less than the specified length of the simulated flight parameter data.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] The integrity test and verification method for the jettisonable recorder flight parameter data provided by the present invention realizes the verification of the integrity, correctness and consistency of the flight data recorded by the jettisonable recorder, improves the safety of aircraft flight training, reduces the probability of omissions and errors in traditional recorders, improves product quality, and reduces the maintenance and use costs of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 : A flowchart of the integrity test verification method of the jettisonable recorder flight parameter data provided by the present invention. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the following embodiments and accompanying drawings specifically illustrate the verification method provided by the present invention.

[0030] In the description of the embodiments of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the invention.

[0031] In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0032] The terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to specific circumstances.

[0033] like Figure 1 As shown, an embodiment of the present invention provides a method for integrity testing and verification of flight parameter data of a jettisonable recorder, the method comprising the following steps:

[0034] S1: After the product completes the startup work, it enters the normal working mode. Generate simulated flight data through the public computer:

[0035] S2: In normal working mode, the jettisonable recorder periodically receives the simulated flight parameter data of S1 through the high-speed serial bus interface;

[0036] S3: storing the flight parameter data in a storage module in the crash protection component of the jettisonable recorder;

[0037] S4: The jettisonable recorder enters the maintenance mode, receives the maintenance command from the public computer through the high-speed serial bus interface, issues a response command, and starts downloading the flight parameter data of the jettisonable recorder;

[0038] S5: After the flight parameter data is downloaded, it is compared with the simulated flight parameter data of S1; the data format, data name, and data size of the flight parameter data are compared, and if they are consistent, proceed to the next step. The consistency of the data recording time is determined according to the start time and end time of the data record; the flight parameter data source code value is compared, and the model number and time information are checked through the source code value to see if they are consistent with the uploaded flight data;

[0039] S6: Perform an abnormal test to verify whether the flight parameter data recorded by the jettisonable recorder under abnormal conditions is correct.

[0040] In some embodiments, the simulated flight parameter data includes RS422, ARINC429, 1553B standard bus data of various systems / equipment of the simulated aircraft and switch quantity, analog quantity, frequency quantity, and synchronizer standard non-bus data.

[0041] In some embodiments, the periodicity includes 50ms-200ms.

[0042] In some embodiments, S5 includes the following steps:

[0043] S5.1: Check whether the data record format, data record name, and data record size are consistent with the corresponding data in the simulated flight parameter data. If they are consistent, proceed to the next step;

[0044] S5.2: Determine whether the recording time of the flight parameter data is consistent with the recording time in the simulated flight parameter data. If they are consistent, proceed to the next step;

[0045] S5.3: Use the datcheck data frame / packet check tool to check the data frames and packets of the flight data recorded by the jettisonable recorder;

[0046] S5.4: By comparing the hexadecimal source code value of the flight parameter data, determine whether the aircraft model, aircraft number, flight subject, engine status, and product serial number are consistent with the simulated flight parameter data.

[0047] In some embodiments, the flight parameter data recording time in S5.2 refers to the time when the jettisonable recorder starts recording when it is powered on and the time when the recording stops when it is powered off.

[0048] In some embodiments, S6 includes the following steps:

[0049] S6.1: During the data uploading process, the jettisonable recorder is powered off and the flight parameter data of the jettisonable recorder is checked for a power-off mark.

[0050] S6.2: Restore the flight parameter data recorded by the jettisonable recorder and check whether the last 1s of the flight parameter data has been processed with incomplete frame data.

[0051] In some embodiments, the incomplete frame data in S6.2 refers to data whose last data packet length is less than the specified length of the simulated flight parameter data.

[0052] In some embodiments, the datcheck data frame / packet inspection tool in S5.3 is used to determine whether a data packet failure is reported when processing the flight parameter data recorded by the jettisonable recorder.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention. These improvements and variations should also be regarded as the protection scope of the present invention.

Claims

1. A method for integrity testing and verification of flight parameter data of a jettisonable recorder, characterized in that: The method comprises the following steps: S1: Generate simulated flight parameter data; S2: The jettisonable recorder periodically receives the simulated flight parameter data from S1 via a high-speed serial bus interface; S3: storing the flight parameter data in a storage module in the crash protection component of the jettisonable recorder; S4: The jettisonable recorder enters the maintenance mode, sends a response command after receiving the maintenance command through the high-speed serial bus interface, and starts downloading the flight parameter data of the jettisonable recorder; S5: After the flight parameter data is downloaded, it is compared with the simulated flight parameter data of S1; S6: Perform an abnormal test to verify whether the flight data recorded by the jettisonable recorder is correct under abnormal conditions. The S5 comprises the following steps: S5.1: Check whether the data record format, data record name, and data record size are consistent with the corresponding data in the simulated flight parameter data. If they are consistent, proceed to the next step; S5.2: Determine whether the recording time of the flight parameter data is consistent with the recording time in the simulated flight parameter data. If they are consistent, proceed to the next step; S5.3: Use the datcheck data frame / packet check tool to check the data frame and data packet of the flight parameter data recorded by the jettisonable recorder to determine whether a data packet fault is reported; S5.4: By comparing the hexadecimal source code value of the flight parameter data, determine whether the aircraft model, flight subject, engine status, and product serial number are consistent with the simulated flight parameter data. The flight parameter data recording time in S5.2 refers to the time when the jettisonable recorder starts recording when it is powered on and the time when it stops recording when it is powered off. The S6 comprises the following steps: S6.1: During the data uploading process, the jettisonable recorder is powered off and the flight parameter data of the jettisonable recorder is checked for a power-off mark. S6.2: Restore the flight parameter data recorded by the jettisonable recorder and check whether the last 1s of the flight parameter data has been processed with incomplete frame data.

2. The verification method according to claim 1, characterized in that: The simulated flight parameter data include RS422, ARINC429, 1553B standard bus data of each system / equipment of the simulated aircraft and switch quantity, analog quantity, frequency quantity, synchronizer standard non-bus data.

3. The verification method according to claim 1, characterized in that: The periodicity includes 50ms-200ms.

4. The verification method according to claim 1, characterized in that: The incomplete frame data in S6.2 refers to the data whose last data packet length is less than the specified length of the simulated flight parameter data.

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