A screen display system and storage method based on avionics joint test environment

Abstract

The present invention relates to the field of avionics system detection and repair technology, specifically to a screen display system and a storage method based on an avionics joint test environment, wherein the screen display system includes three multi-function displays and a head-up display arranged in a simulated cockpit, and two display control management processors connected to the three multi-function displays and the head-up display, the two display control management processors are backed up for each other, and the two display control management processors are correspondingly connected to two four-way passive twisted pair video transmitters, and the two four-way passive twisted pair video transmitters are connected to the same analog matrix video switcher. The present invention projects and displays the screens of the multi-function display and the head-up display in the narrow simulated cockpit, so that the relevant test screens of the avionics system can be presented to multiple people at the same time, so that the debugging and repair personnel inside and outside the simulated cockpit can share the test screens, maintain the real-time and coordination of the test results, and effectively shorten the debugging cycle.

Description

Technical Field

[0001] The present invention relates to the technical field of avionics system detection and repair, and in particular to a screen display system and a storage method based on an avionics joint test environment. Background Art

[0002] The aircraft avionics system is centered on the display management and control subsystem. It organically combines the external storage management subsystem, communication navigation identification subsystem, electronic countermeasure subsystem, radar subsystem, atmosphere subsystem and other avionics subsystems through integration, modularization and functional software. It is a comprehensive system with complex cross-linking relationships and is the "brain" of the aircraft. The aircraft integrated avionics system joint test and debugging environment (hereinafter referred to as the "joint test environment") can conduct comprehensive tests on the aircraft avionics system during the development process and after overhaul, complete the inspection test before installation, and verify that the matching between the subsystems can meet the installation requirements, as well as the coordination and stability of the work in the entire aircraft system.

[0003] The main operations of the traditional "joint test environment" are concentrated in the simulated cockpit. Due to the small space of the simulated cockpit, only one person can debug each subsystem and interpret the results of the multi-function display screen, which causes the personnel of each subsystem to rotate to the cockpit to view the screen, which is not conducive to production operations and communication and discussion of problems; in addition, when abnormal events or special events such as subsystem failures occur during the debugging process, the multi-function display screen cannot be automatically saved or replayed, which brings inconvenience to the repair and debugging personnel. The present invention converts the video screen of the multi-function display into a format, and through an analog matrix video switcher, a group of multi-function display screens are projected onto a large screen for display, and another group of video screens are connected to a computer for automatic saving, meeting the diverse needs of repair and debugging personnel for interpreting test results. Summary of the invention

[0004] In view of the problem of insufficient interpretation of test result images in the existing joint test environment, the present invention proposes a screen display system and storage method based on the avionics joint test environment. On the basis of not changing the original video screen display inside the cockpit, the video screen path of the multi-function display in the simulated cockpit is divided into three, which makes up for the shortcoming that the original test screen can only be viewed by one person. By adding video converters, video switchers, splicing screens, computers and other equipment, the functions of real-time large-screen projection of avionics system test video images, video storage and screenshots of important moments are realized, which improves the work efficiency of repair and debugging personnel, and important test data and images are saved.

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

[0006] A picture display system based on an avionics joint test environment comprises three multi-function displays and a head-up display arranged in a simulated cockpit, and two display control management processors connected to the three multi-function displays and the head-up display, the two display control management processors back up each other, the two display control management processors are correspondingly connected to two four-way passive twisted pair video transmitters, the two four-way passive twisted pair video transmitters are connected to the same analog matrix video switcher, the analog matrix video switcher is respectively connected to a video matrix and a three-dimensional high-definition video acquisition box, wherein the video matrix is ​​connected to an edge fusion splicer, the edge fusion splicer is connected to a splicing screen, and the three-dimensional high-definition video acquisition box is connected to a PC.

[0007] Preferably, the three multi-function displays and the head-up display are used to receive video signals sent by the display control management processor and present video images according to the video signals. The three multi-function displays are divided into a left multi-function display, a middle multi-function display, and a right multi-function display.

[0008] Preferably, the display control management processor is used to output the flight picture and combat picture of the aircraft to three multi-function displays and a head-up display.

[0009] Preferably, the four-channel passive twisted pair video transmitter is used to convert the four-channel CIR-D color video signals output by the display control management processor from UTP unshielded twisted pair to BNC coaxial cable interface mode.

[0010] Preferably, the analog matrix video switcher is used for switching the channels of the video output by the two display control management processors, so as to ensure that only the picture of one display control management processor is output to the video matrix and the three-dimensional high-definition video acquisition box in real time.

[0011] Preferably, the video matrix is ​​used to convert received 4-channel video signals in the form of BNC interfaces into 4-channel video signals in the form of DVI interfaces.

[0012] Preferably, the edge fusion splicer is used to receive high-resolution DVI digital signal input, and adjust and transform the screen size, display position, image ratio and other aspects of the input signal according to user requirements.

[0013] Preferably, the spliced ​​screen is used to enlarge and display a smaller screen of the multi-function display in the simulated cockpit.

[0014] Preferably, a three-dimensional high-definition video capture box is used to capture video images.

[0015] A method for saving a screen display system based on an avionics joint test environment, using a screen display system based on an avionics joint test environment, comprises the following steps:

[0016] (1) Convert the 4-channel CCIR-D color video signals output by the display control management processor from UTP unshielded twisted pair to BNC coaxial cable interface mode;

[0017] (ii) managing the channel switching of the output video through an analog matrix video switcher, and maintaining real-time output of the image of only one display control management processor to the video matrix and computer video acquisition equipment;

[0018] (3) The computer video acquisition device acquires the video images transmitted by the matrix video switch;

[0019] (iv) The PC application program splices the collected three-way multi-function display video and one HUD video to form a video format with one flat and three flat areas filled with black edges;

[0020] (5) storing the spliced ​​video in segments according to preset time in a preset space, and automatically overwriting the earliest segmented video when the storage space is full;

[0021] (VI) A customized player can be used to play back videos. When playing back videos, the player automatically searches for video files in the storage space and reads basic information of video files that are close in time to the current video. If the basic information determines that the pre-read video is connected to the video being played, the pre-read video will be automatically played when the current video is finished playing. The process is then repeated until it is manually stopped by a person or it automatically stops when there is no video that is connected to the video being played.

[0022] The beneficial effects of the present invention are:

[0023] The present invention projects and displays the images of the multi-function display and the head-up display in the narrow simulated cockpit, so that the relevant test images of the avionics system can be presented to multiple people at the same time, so that the debugging and repair personnel inside and outside the simulated cockpit can share the test images, maintain the real-time and coordination of the test results, effectively shorten the debugging cycle, and improve the troubleshooting efficiency. At the same time, the images in the test process are saved, and the repair and debugging personnel can analyze a certain flight scene before and after, which greatly improves the utilization rate of aircraft data. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0025] Figure 1 It is a structural schematic diagram of the screen display system of the present invention;

[0026] Figure 2 A schematic diagram of a display screen of a spliced ​​screen in the present invention;

[0027] Figure 3The present invention is a flowchart of the method for saving. DETAILED DESCRIPTION

[0028] 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.

[0029] like Figure 1 As shown in the figure, a picture display system based on the avionics joint test environment includes three multi-function displays, a head-up display, two display control management processors, two four-way passive twisted pair video transmitters, an analog matrix video switcher, a video matrix, a three-dimensional high-definition video acquisition box, an edge fusion splicer, a splicing screen, and a PC. Figure 1 As shown, the three multi-function displays are the left multi-function display, the middle multi-function display, and the right multi-function display. Figure 1 LMFD corresponds to the left multi-function display; CNFD corresponds to the center multi-function display; RMFD corresponds to the right multi-function display; HUD corresponds to the head-up display; DCMP1 and DCMP2 correspond to two display control management processors, and the two display control management processors back up each other.

[0030] The three multi-function displays, the head-up display, and the two display control management processors are correspondingly arranged in the simulated cockpit. The three multi-function displays, the head-up display and the two display control management processors are correspondingly connected to the two four-way passive twisted pair video transmitters, and the two four-way passive twisted pair video transmitters are both connected to the analog matrix video switcher, and the analog matrix video switcher is respectively connected to the video matrix and the three-dimensional high-definition video capture box, the video matrix is ​​connected to the edge fusion splicer, the edge fusion splicer is connected to the splicing screen, and the three-dimensional high-definition video capture box is connected to the PC.

[0031] Furthermore, the three multi-function displays and the head-up display are display subsystems of the aircraft avionics electronic system. When the display control management processor sends out a video signal, they are responsible for receiving and presenting the video image for use by pilots and debugging and repair personnel.

[0032] The display control management processor, the three multi-function displays and the head-up display are display subsystems of the aircraft's avionics electronic system. According to the display file requirements, they generate strokes and raster character graphics for display, and are responsible for outputting the aircraft's flight screen and combat screen to the three multi-function displays and the head-up display.

[0033] The four-channel passive twisted pair video transmitter is responsible for converting the four-channel CIR-D color video signals output by the display control management processor from UTP unshielded twisted pair to BNC coaxial cable interface mode. This type of video transmitter has the characteristics of long transmission distance, high transmission quality, convenient wiring, strong anti-interference ability, and high reliability.

[0034] The analog matrix video switch serves as a receiving video matrix switch and is responsible for switching the channels of the output videos of the two display control management processors to ensure that only the picture of one display control management processor is output to the video matrix and the three-dimensional high-definition video acquisition box in real time.

[0035] The video matrix is ​​responsible for converting the received 4-channel BNC interface video signals into 4-channel DVI interface video signals.

[0036] The edge fusion splicer is used to receive high-resolution DVI digital signal input, and adjust and transform the screen size, display position, image ratio and other aspects of the input signal according to user requirements, and finally synchronously splice them on the splicing screen in the form of multi-signal pictures.

[0037] The spliced ​​screen has twelve displays, which are used to enlarge and display the smaller images of the multi-function display in the simulated cockpit.

[0038] The three-dimensional high-definition video acquisition box is used to collect video images, is connected to a computer via a USB 3.0 interface, and is compatible with USB 2.0.

[0039] The PC computer integrates the video capture box into the existing system through the SDK development kit provided by the supplier. Through secondary software development, the captured images can be stored and screen screenshots can be triggered according to special events.

[0040] like Figure 3 As shown, a method for saving a screen display system based on an avionics joint test environment, using the above-mentioned screen display system based on an avionics joint test environment, comprises the following steps:

[0041] (i) The 4-channel CCIR-D color video signal output by the display control management processor is converted from UTP unshielded twisted pair cable to BNC coaxial cable interface mode.

[0042] (ii) Manage the channel switching of the output video through an analog matrix video switcher, and keep outputting the image of only one display control management processor to the video matrix and computer video acquisition equipment in real time.

[0043] (3) The computer video acquisition device acquires the video images transmitted by the matrix video switch.

[0044] (IV) The PC application program splices the collected three-way multi-function display video and one-way HUD video to form a video format with three flat displays and black edges added to the insufficient parts. Figure 2 shown.

[0045] (V) The spliced ​​video is stored in segments according to preset time in a preset space, and the earliest segmented video is automatically overwritten when the storage space is full.

[0046] (VI) A customized player can be used to play back videos. When playing back videos, the player automatically searches for video files in the storage space and reads basic information of video files that are close in time to the current video. If the basic information determines that the pre-read video is connected to the video being played, the pre-read video will be automatically played when the current video is finished playing. The process is then repeated until it is manually stopped by a person or it automatically stops when there is no video that is connected to the video being played.

[0047] The present invention projects and displays the images of the multi-function display and the head-up display in the narrow simulated cockpit, so that the relevant test images of the avionics system can be presented to multiple people at the same time, so that the debugging and repair personnel inside and outside the simulated cockpit can share the test images, maintain the real-time and coordination of the test results, effectively shorten the debugging cycle, and improve the troubleshooting efficiency. At the same time, the images in the test process are saved, and the repair and debugging personnel can analyze a certain flight scene before and after, which greatly improves the utilization rate of aircraft data.

[0048] 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 screen display system based on an avionics joint test environment, characterized in that: It includes three multi-function displays, a head-up display, and two display control management processors arranged in the simulated cockpit. The three multi-function displays and the head-up display are connected to the two display control management processors. The three multi-function displays and the head-up display are used to receive video signals sent by the display control management processors and present video images according to the video signals. The two display control management processors are backed up for each other. The two display control management processors are used to output the flight images and combat images of the aircraft to three multi-function displays and a head-up display; the two display control management processors are correspondingly connected to two four-way passive twisted pair video transmitters, which are used to convert the four-way CIR-D color video signals output by the display control management processor from UTP unshielded twisted pair to BNC coaxial cable interface mode; the two four-way passive twisted pair video transmitters are connected to the same analog matrix video switcher, which is used to switch the channels of the output videos of the two display control management processors; the analog matrix video switcher is respectively connected to a video matrix and a three-dimensional high-definition video capture box, and the video matrix is ​​used to convert the received four-way BNC interface video signals into four-way DVI interface video signals, and the three-dimensional high-definition video capture box is used to capture video images; the video matrix is ​​connected to an edge fusion splicer, which is used to receive high-resolution DVI digital signal input, and adjust and transform the screen size, display position, and image ratio of the input signal according to user requirements; The edge fusion splicer is connected to a splicing screen, which is used to enlarge and display the smaller screen of the multi-function display in the simulated cockpit; the three-dimensional high-definition video capture box is connected to a PC.

2. The screen display system based on the avionics joint test environment according to claim 1 is characterized by: The three multi-function displays are divided into a left multi-function display, a center multi-function display, and a right multi-function display.

3. A method for saving a screen display system based on an avionics joint test environment, characterized in that: A screen display system based on an avionics joint test environment according to any one of claims 1 to 2 comprises the following steps: (i) Convert the 4-channel CCIR-D color video signals output by the display control management processor from UTP unshielded twisted pair to BNC coaxial cable interface mode; (ii) Manage the channel switching of the output video through an analog matrix video switcher to ensure that only one display control management processor outputs the image to the video matrix and computer video acquisition equipment in real time; (3) The computer video acquisition device acquires the video images transmitted by the matrix video switch; (iv) The PC application program splices the collected three-way multi-function display video and one HUD video to form a video format with one flat and three flat areas filled with black edges; (5) storing the spliced ​​video in segments according to preset time in preset space, and automatically overwriting the earliest segmented video when the storage space is full; (VI) Using a customized player to play back videos, when playing back videos, the player automatically searches for video files in the storage space and reads basic information about video files with a time close to that of the current video. If the basic information determines that the pre-read video is connected to the video being played, the pre-read video will automatically play when the current video is finished playing, until it is manually stopped by a person or there is no video that is connected to the video being played.

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