Real-time data acquisition and recording system for avionics system

Abstract

The invention relates to the technical field of data recording, in particular to an avionics system data real-time collecting and recording system, which comprises a time service device, a data collecting and recording device and a data collecting and recording device, a storage server; the audio synchronous recording system comprises audio recording equipment, an on-board headset and a complete machine cable, the video synchronous recording system comprises a video acquisition device, an optical splitter, a cabin display and a complete machine cable, the flight parameter acquisition system comprises flight parameter acquisition equipment, an airborne data management computer and an airborne data recorder; the GJB289A bus acquisition system comprises a GJB289A bus acquisition device, a GJB289A bus acquisition system and a GJB289A bus The FC optical fiber acquisition system comprises optical fiber acquisition equipment, an airborne optical fiber switch and an airborne data management computer. According to the method, a good incidence relation is provided for complex heterogeneous data, and an analysis platform is provided for comprehensive management and application of the data.

Description

Technical Field

[0001] The invention relates to the technical field of data recording, in particular to a real-time data acquisition and recording system for an avionics system. Background Art

[0002] Avionics system equipment is developed by many research and development units, each of which uses different communication methods and records different types of data. In addition, the timing and logical relationships when the avionics system is powered on are strong. Therefore, an avionics system data acquisition and recording system is needed to complete the real-time collection and recording of test process data, providing a data source for the management and control of the health status of the avionics system.

[0003] "Aviation Computing Technology" Volume 49, Issue 6, Pages 81-84, published in November 2019, disclosed a data acquisition and recording system based on a hybrid bus, but it only realized the recording of multiple buses, and failed to realize the comprehensive recording of audio, video and bus and the comprehensive recording function at the same time. Summary of the invention

[0004] In order to solve the above technical problems, the present invention proposes a real-time data acquisition and recording system for an avionics system.

[0005] The technical problem to be solved by the present invention is achieved by adopting the following technical solutions:

[0006] A real-time data acquisition and recording system for an avionics system, comprising:

[0007] Timing equipment, including satellite signal receivers and satellite receiving antennas, is used to convert time information into defined RS422 signals for output, provide the time information required by the boards in the system, and complete the unified timing of the system;

[0008] Storage servers;

[0009] An audio synchronization recording system, comprising an audio recording device connected to the timing device and a storage server, an on-board headset connected to the audio recording device, and a whole machine cable connected to the on-board headset, wherein the audio recording device is used to collect RS422 time information provided by the timing device, complete time synchronization management, and complete a voice recording function under dual channels, and upload the recorded file to the storage server via Gigabit Ethernet;

[0010] A video synchronization recording system, comprising a video acquisition device connected to the timing device and a storage server, an optical splitter connected to the video acquisition device, a cockpit display connected to the optical splitter, and a whole machine cable, wherein the video acquisition device is used to acquire RS422 time information provided by the timing device, complete time synchronization management, complete recording of video signals, and upload the video signals to the storage server via Gigabit Ethernet;

[0011] A flight parameter collection system, comprising a flight parameter collection device connected to the timing device and the storage server, an airborne data management computer and an airborne data recorder connected to the flight parameter collection device, wherein the flight parameter collection device is used to collect RS422 time information provided by the timing device as the start time of system collection and recording, and to obtain data transmitted by the airborne data management computer to the airborne data recorder in real time through HDLC communication, and upload the data to the storage server through Gigabit Ethernet after collection and analysis;

[0012] A GJB289A bus acquisition system, comprising a GJB289A bus acquisition device connected to the timing device and the storage server, the GJB289A bus acquisition device being connected to a bus monitoring terminal in the GJB2889A bus, the GJB289A bus acquisition device being used to acquire RS422 time information provided by the timing device as an initial acquisition time, and to acquire and record multiple GJB2889A bus communication data in real time through multiple acquisition cards and then upload them to the storage server through Gigabit Ethernet;

[0013] The FC optical fiber acquisition system includes an optical fiber acquisition device connected to the timing device and the storage server, an airborne optical fiber switch connected to the optical fiber acquisition device, and an airborne data management computer. The optical fiber acquisition device is used to collect RS422 time information provided by the timing device as the initial acquisition time, and to obtain in real time the communication data sent by the optical fiber switch to the airborne data management computer, forward the optical signal to the airborne data management computer for normal operation, and upload the collected and parsed data to the storage server via Gigabit Ethernet.

[0014] As a further improvement of the present invention, the satellite signal receiver includes a satellite navigation receiver connected to the satellite receiving antenna, a control circuit module and a timing signal distribution module connected to the satellite navigation receiver, and a keyboard, mouse and display connected to the control circuit module. The control circuit module is connected to the timing signal distribution module, and the timing signal distribution module is respectively connected to the audio recording device, video acquisition device, flight parameter acquisition device, GJB289A bus acquisition device, and optical fiber acquisition device through an RS422 line.

[0015] As a further improvement of the present invention, the optical splitter is connected to an optical-to-DVI device, and the optical-to-DVI device is connected to a video acquisition device.

[0016] As a further improvement of the present invention, the video acquisition device includes six video acquisition boards, and the optical splitter, cockpit display, whole machine cable and optical-to-DVI device are all provided in six groups.

[0017] The beneficial effects of the present invention are:

[0018] The present invention collects audio and video data, flight parameter data, optical fiber data, and GJB289A bus data generated during ground power-on detection of an avionics system in real time, unifies the reference time source of all data through the configured timing equipment, and completes the storage management of the data by a storage server, thereby providing a good correlation relationship for complex heterogeneous data and an analysis platform for comprehensive data management and data application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0020] Figure 1 It is the overall structural diagram of the present invention;

[0021] Figure 2 This is a structural block diagram of the timing device of the present invention;

[0022] Figure 3 It is a structural block diagram of the audio synchronous recording system of the present invention;

[0023] Figure 4 It is a structural block diagram of the video synchronous recording system of the present invention;

[0024] Figure 5 This is a structural block diagram of the flight parameter acquisition system of the present invention;

[0025] Figure 6 It is the structural block diagram of the GJB289A bus acquisition system of the present invention;

[0026] Figure 7 This is a structural block diagram of the FC optical fiber acquisition system of the present invention. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below with reference to the accompanying drawings and embodiments.

[0028] like Figure 1 As shown,

[0029] There are five main types of data generated by the avionics system during the power-on process: one is video data, which mainly includes cockpit display screen information; one is audio data, which mainly includes cockpit personnel voice communication information; one is FC optical fiber data, which mainly includes data communication information between nodes under the bus; one is GJB289A bus data, which mainly includes communication information between devices under the bus format; and one is data based on HDLC (High-Level Data Link) communication, which mainly includes flight parameter data information.

[0030] Since there are five types of data generated during the test of avionics systems, Figure 1 As shown, a real-time data acquisition and recording system for an avionics system in this embodiment includes a timing device, an audio synchronization recording system, a video synchronization recording system, a video synchronization recording system, a flight parameter acquisition system, a GJB289A bus acquisition system, an FC optical fiber acquisition system, and a storage server.

[0031] Specifically, Figure 2 As shown, the timing device includes a satellite signal receiver and a satellite receiving antenna. The satellite signal receiver includes a satellite navigation receiver connected to the satellite receiving antenna, a control circuit module and a timing signal distribution module connected to the satellite navigation receiver, a keyboard, a mouse and a display connected to the control circuit module, the control circuit module is connected to the timing signal distribution module, and the timing signal distribution module is connected to the audio recording device, the video acquisition device, the flight parameter acquisition device, the GJB289A bus acquisition device, and the optical fiber acquisition device through RS422 lines.

[0032] The timing device receives GPS or Beidou satellite signals through the satellite receiving antenna, extracts the time information of the satellite signal through the satellite navigation receiver, and the timing signal distribution converts the time information into a defined RS422 signal for output, and provides the time information required by the board in the system to complete the unified timing of the system.

[0033] like Figure 3 As shown, the audio synchronization recording system includes an audio recording device, an onboard headset, and a whole machine cable. The audio recording device is connected to the timing device and the storage server, the onboard headset is connected to the whole machine cable, and the audio recording device is connected in series between the onboard headset and the whole machine cable. The audio synchronization recording system collects the RS422 time information provided by the timing device through the audio recording device, completes time synchronization management, and completes the voice recording function under dual channels (including pilot speaking information and receiving information), and uploads the recorded files to the storage server via Gigabit Ethernet.

[0034] like Figure 4As shown, the video synchronous recording system includes a video acquisition device, an optical splitter, a cockpit display, an optical-to-DVI device, and a whole machine cable. The video acquisition device is connected to the timing device and the storage server, and the video acquisition device contains six video acquisition boards; therefore, the optical splitter, cockpit display, optical-to-DVI device, and whole machine cable are all provided in six groups. The cockpit display is connected to the optical splitter, the optical splitter is connected to the optical-to-DVI device and the whole machine cable, and the optical-to-DVI device is connected to the video acquisition device.

[0035] The video synchronization recording system first converts the video signal transmitted from the cockpit display into two outputs through the optical splitter, one of which is connected by the whole machine cable to ensure the communication, and the other is uploaded to the video acquisition device after passing through the optical to DVI converter; the video acquisition device is used to collect the RS422 time information provided by the timing device, complete the time synchronization management, and complete the recording of the video signal, and upload the video signal to the storage server via Gigabit Ethernet.

[0036] like Figure 5 As shown, the flight parameter acquisition system includes a flight parameter acquisition device, an onboard data management computer and an onboard data recorder. The onboard data management computer is connected to the onboard data recorder, and the flight parameter acquisition device is connected in parallel between the onboard data management computer and the onboard data recorder; the flight parameter acquisition device is connected to the timing device and the storage server. The flight parameter acquisition system acquires the RS422 time information provided by the timing device through the flight parameter acquisition device as the start time of the system acquisition record, and acquires the data transmitted by the onboard data management computer to the onboard data recorder in real time through HDLC communication, and uploads it to the storage server through Gigabit Ethernet after acquisition and analysis.

[0037] like Figure 6 As shown, the GJB289A bus acquisition system includes a GJB289A bus acquisition device. According to the GJB289A bus communication protocol, the GJB2889A bus is divided into a bus controller (BC), a remote terminal (RT) and a bus monitoring terminal (BM). Through the inherent communication protocol of the bus, the configured GJB289A acquisition device is connected to the bus monitoring terminal, and is connected to the timing device and the storage server. The GJB289A bus acquisition system acquires the RS422 time information provided by the timing device through the GJB289A bus acquisition device as the initial acquisition time, and acquires and records multiple GJB2889A bus communication data in real time through multiple acquisition cards and uploads them to the storage server through Gigabit Ethernet.

[0038] like Figure 7As shown, the FC optical fiber acquisition system includes an optical fiber acquisition device, an airborne optical fiber switch and an airborne data management computer. The airborne optical fiber switch is connected to the airborne data management computer. According to the FC-AE-ASM bus communication protocol, the optical fiber acquisition device is connected in series between the optical fiber switch and the airborne data management computer for the switching topology adopted by the avionics system, and the optical fiber acquisition device is connected to the timing device and the storage server. The FC optical fiber acquisition system collects the RS422 time information provided by the timing device through the optical fiber acquisition device as the initial acquisition time, and obtains the communication data sent by the optical fiber switch to the airborne data management computer in real time, forwards the optical signal to the airborne data management computer for normal operation, and uploads the collected and parsed data to the storage server via Gigabit Ethernet.

[0039] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A real-time data acquisition and recording system for an avionics system, characterized in that: include, Timing equipment, including satellite signal receivers and satellite receiving antennas, is used to convert time information into defined RS422 signals for output, provide the time information required by the boards in the system, and complete the unified timing of the system; Storage servers; An audio synchronization recording system, comprising an audio recording device connected to the timing device and a storage server, an on-board headset connected to the audio recording device, and a whole machine cable connected to the on-board headset, wherein the audio recording device is used to collect RS422 time information provided by the timing device, complete time synchronization management, and complete a voice recording function under dual channels, and upload the recorded file to the storage server via Gigabit Ethernet; A video synchronization recording system, comprising a video acquisition device connected to the timing device and a storage server, an optical splitter connected to the video acquisition device, a cockpit display connected to the optical splitter, and a whole machine cable, wherein the video acquisition device is used to acquire RS422 time information provided by the timing device, complete time synchronization management, complete recording of video signals, and upload the video signals to the storage server via Gigabit Ethernet; A flight parameter collection system, comprising a flight parameter collection device connected to the timing device and the storage server, an airborne data management computer and an airborne data recorder connected to the flight parameter collection device, wherein the flight parameter collection device is used to collect RS422 time information provided by the timing device as the start time of system collection and recording, and to obtain data transmitted by the airborne data management computer to the airborne data recorder in real time through HDLC communication, and upload the data to the storage server through Gigabit Ethernet after collection and analysis; A GJB289A bus acquisition system, comprising a GJB289A bus acquisition device connected to the timing device and the storage server, the GJB289A bus acquisition device being connected to a bus monitoring terminal in the GJB2889A bus, the GJB289A bus acquisition device being used to acquire RS422 time information provided by the timing device as an initial acquisition time, and to acquire and record multiple GJB2889A bus communication data in real time through multiple acquisition cards and then upload them to the storage server through Gigabit Ethernet; The FC optical fiber acquisition system includes an optical fiber acquisition device connected to the timing device and the storage server, an airborne optical fiber switch connected to the optical fiber acquisition device, and an airborne data management computer. The optical fiber acquisition device is used to collect RS422 time information provided by the timing device as the initial acquisition time, and to obtain in real time the communication data sent by the optical fiber switch to the airborne data management computer, forward the optical signal to the airborne data management computer for normal operation, and upload the collected and parsed data to the storage server via Gigabit Ethernet.

2. The real-time data acquisition and recording system for an avionics system according to claim 1, characterized in that: The satellite signal receiver includes a satellite navigation receiver connected to the satellite receiving antenna, a control circuit module and a timing signal distribution module connected to the satellite navigation receiver, and a keyboard, mouse and display connected to the control circuit module. The control circuit module is connected to the timing signal distribution module, and the timing signal distribution module is connected to the audio recording device, video acquisition device, flight parameter acquisition device, GJB289A bus acquisition device, and optical fiber acquisition device through RS422 lines.

3. The real-time data acquisition and recording system for an avionics system according to claim 1, characterized in that: The optical splitter is connected to an optical-to-DVI device, and the optical-to-DVI device is connected to a video acquisition device.

4. The real-time data acquisition and recording system for an avionics system according to claim 3, characterized in that: The video acquisition equipment includes six video acquisition boards, and the optical splitter, cockpit display, whole machine cable and optical-to-DVI equipment are all provided in six groups.

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