Testable display system and test method based on integrated modular avionics architecture

Abstract

The invention discloses a testable display system based on an integrated modular avionics architecture, which comprises an integrated modular avionics platform, a resident application and a display application, and is characterized in that the integrated modular avionics platform provides public resources for the resident application and the display application; the display application determines whether to enter a display test mode or not according to the operation state of the integrated modular avionics system and an external signal; in the non-display test mode, a display signal of the display application comes from the resident application; in the display test mode, a display signal of the display application comes from an external display excitation device. According to the method, data cross-linking of the display application and the resident application is decoupled, so that independence of display application testing is realized, complexity of system testing can be effectively reduced, and troubleshooting efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the field of integrated avionics technology, specifically relating to a testable display system and test method based on an integrated modular avionics architecture. Background Technology

[0002] With the rapid development of aviation technology, the integrated modular avionics architecture has gradually become the mainstream architecture for modern avionics systems due to its advantages such as high integration, resource sharing, and strong reconfigurability. Under the integrated modular avionics architecture, the functions of the avionics system are implemented through multiple standardized modules, which greatly improves the reliability and maintainability of the system.

[0003] However, as a crucial human-machine interface in avionics systems, the reliability and accuracy of display systems directly impact flight safety and efficiency. Traditional display system testing suffers from limitations such as limited testing functionality, low efficiency, and difficulty in adapting to the complex system integration within integrated modular avionics architectures. In integrated modular avionics architectures, modules are tightly coupled, requiring the display system to interact with multiple modules offering different functions, which places higher demands on display system testing.

[0004] Existing testing methods cannot comprehensively and accurately detect the performance of display systems under various complex operating conditions, making it difficult to detect potential display faults in a timely manner and posing a threat to flight safety. Therefore, developing a testable display system and its testing method based on an integrated modular avionics architecture is of great significance for improving the reliability and testing efficiency of display systems and ensuring flight safety. Summary of the Invention

[0005] The purpose of this invention is to provide a testable display system and testing method based on an integrated modular avionics architecture. This display system has two modes: a display test mode and a non-display test mode. The non-display test mode is the normal operating mode of the onboard system, while the display test mode is used for system testing. In the display test mode, the display application directly receives display stimulus data from the display stimulus device, thereby simplifying the display interaction process and reducing the complexity of display system testing.

[0006] The objective of this invention is achieved through the following technical solution:

[0007] A testable display system based on an integrated modular avionics architecture includes an integrated modular avionics platform, a resident application, and a display application. The integrated modular avionics platform provides common resources to the resident application and the display application. The display application determines whether to enter the display test mode based on the operating status of the integrated modular avionics system and external signals. In the non-display test mode, the display signal of the display application comes from the resident application. In the display test mode, the display signal of the display application comes from an external display excitation device.

[0008] Ideally, the common resources provided by the integrated modular avionics platform include computing, networking, and interfaces.

[0009] Ideally, the resident application uses public resources to implement aircraft-level functionality and then provides display signals to the display application;

[0010] The display application integrates and processes the display functions of all resident applications, receives display signals from different resident applications or display excitation devices, processes them through display logic, and sends them to the display screen for display.

[0011] A testing method is implemented by a testable display system based on an integrated modular avionics architecture and a ground testing system. The ground testing system includes a high-speed camera, a display stimulus device, and a display test processing tool. The high-speed camera is used to capture display images and digitize the image information before transmitting it to the display test processing tool. The display stimulus device generates display stimuli based on the display signals from the display test processing tool and transmits them to the display application. The display test processing tool provides a human-machine interface for testers to edit, manage, and generate display test cases. It generates display signals based on the test cases and sends them to the display stimulus device. It can also parse the digitized image information from the high-speed camera and automatically generate test results and test reports.

[0012] Preferably, the display test processing tool, display excitation device, and high-speed camera device interact via network, while the display application and display excitation device interact via discrete quantities.

[0013] Preferably, the testing method includes a ground-based testing system testing process, comprising:

[0014] Step A1: The test processing tool provides an interface for testers to generate and display test cases;

[0015] Step A2: At the start of the test, the display test processing tool controls the display excitation device to send a command to the display application to enter the display test mode;

[0016] Step A3: The display excitation device determines whether the display application has entered the display test mode. If yes, proceed to step A4; otherwise, jump to step A3.

[0017] Step A4: The display excitation device sends the display application to the display test processing tool to enter the display test mode;

[0018] Step A5: The display test processing tool determines whether the display application has entered the display test mode. If yes, proceed to step A6; otherwise, jump to step A5.

[0019] Step A6: The display test processing tool generates and sends a display signal based on the test cases;

[0020] Step A7: The display excitation device reads the display signal from the display test processing tool, generates the display test excitation, and sends it to the display application;

[0021] Step A8: The display test processing tool sends a command to the high-speed camera device to activate high-speed video recording;

[0022] Step A9: The high-speed camera device reads the command to activate high-speed camera. If the command is received, proceed to step A10; otherwise, proceed to step A9.

[0023] Step A10: The high-speed camera device starts high-speed video recording to acquire display information and generates a display signal for transmission;

[0024] Step A11: The display test processing tool reads the display signal from the high-speed camera device. If there is a display signal, proceed to step A12; otherwise, proceed to step A8.

[0025] Step A12: The display test processing tool automatically parses the displayed signals and determines whether the test criteria are met, and generates a test report;

[0026] Step A13: The display test processing tool sends a command to the high-speed camera device to shut down the high-speed camera;

[0027] Step A14: The high-speed camera device reads the command to turn off the high-speed camera. If the command is received, proceed to step A15; otherwise, proceed to step A14.

[0028] Step A15: The high-speed camera device sends a high-speed camera shutdown signal to the display test processing tool to shut down the high-speed camera;

[0029] Step A16: Display the test processing tool to read the high-speed camera shutdown signal. If no signal is received, proceed to step A13. If a signal is received, the process ends.

[0030] Preferably, the test method includes displaying the application test process, including:

[0031] Step B1: The application displays whether it is in test mode based on the operating status of the integrated modular avionics system. If not, proceed to step B2; if yes, jump to step B3.

[0032] Step B2: The display application reads the display signals of each stationary application through the integrated modular avionics platform, processes them, and then displays them;

[0033] Step B3: The application reads the command to enter the display test mode. If received, proceed to step B4; otherwise, jump back to step B3.

[0034] Step B4: The display application sends a message to the display excitation device indicating that it has entered display test mode;

[0035] Step B5: The display application reads the display signal from the display excitation device, processes it, displays it, and then ends.

[0036] The beneficial effects of this invention are as follows:

[0037] 1. In actual engineering, resident applications and display applications are developed by different teams, and the resident applications themselves are complex. At the same time, testing resident applications and display applications is extremely complex and time-consuming. This invention achieves the independence of display application testing by decoupling the data crosslinking between display applications and resident applications, which can effectively reduce the complexity of system testing and improve troubleshooting efficiency.

[0038] 2. This invention automates the capture, analysis, and judgment of display images using high-speed camera equipment, effectively reducing human error and improving testing efficiency.

[0039] 3. The testing steps of this invention are simple, the design is reasonable, and it is convenient to implement and use.

[0040] In summary, the technical solution of this invention is reasonably designed, logically clear, simple to implement, and has high practical value. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of a testable display system based on an integrated modular avionics architecture.

[0042] Figure 2 This is a schematic diagram of the test method flow for a testable display system. Detailed Implementation

[0043] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0044] See Figure 1As shown in this embodiment, a testable display system based on an integrated modular avionics architecture includes an integrated modular avionics platform, a resident application, and a display application. These three components are part of the integrated modular avionics system. The integrated modular avionics platform provides common resources to the resident application and the display application. The display application determines whether to enter display test mode based on the operating status of the integrated modular avionics system and external discrete signals. In non-display test mode, the display signal of the display application comes from the resident application; in display test mode, the display signal of the display application comes from the display excitation device, thereby decoupling the signal source and display processing functions and improving the testability of the airborne display system.

[0045] The integrated modular avionics platform provides public resources including computing, networking, and interfaces.

[0046] The resident application uses public resources to implement aircraft-level functions (excluding display functions), including flight management, crew alarms, central maintenance, etc., and then provides display signals to the display application.

[0047] The display application integrates and processes the display functions of all resident applications for unified display. It receives display signals from different resident applications or display excitation devices, processes them through display logic (selecting which display data to prioritize, etc.), and then sends them to the display screen for the crew to see.

[0048] Based on the above display system, this embodiment also provides a testing method, which is implemented by the above display system and the ground testing system.

[0049] See Figure 1 As shown, the ground testing system includes a high-speed camera, a display excitation device, and a display test processing tool. The high-speed camera is used to capture display images and digitize the image information before transmitting it to the display test processing tool. The display excitation device generates display excitations based on the display signals from the display test processing tool and transmits them to the display application. The display test processing tool provides a human-computer interaction interface for testers to edit, manage, and generate display test cases. It generates display signals based on the test cases and sends them to the display excitation device. It can also parse the digitized image information from the high-speed camera and automatically generate test results and test reports.

[0050] Since the display test processing tool, display excitation device, and high-speed camera device are not part of the integrated modular avionics system, the display test processing tool and the display excitation device and high-speed camera device can use network interaction to improve the effect; while the display application, as part of the integrated modular avionics system, has limited interfaces and its network needs to be used for internal data interaction of airborne equipment. Therefore, the display application and the display excitation device use discrete quantity interaction.

[0051] See Figure 2 As shown, this testing method includes both the application testing process and the ground testing system testing process.

[0052] The ground testing system testing process includes:

[0053] Step A1: The test processing tool provides an interface for testers to generate and display test cases;

[0054] Step A2: At the start of the test, the display test processing tool controls the display excitation device to send a command to the display application to enter the display test mode via discrete quantities;

[0055] Step A3: The display excitation device determines whether the display application has entered the display test mode by using discrete quantities. If yes, proceed to step A4; otherwise, jump back to step A3.

[0056] Step A4: The display excitation device sends the display application to the display test processing tool via the network to enter the display test mode;

[0057] Step A5: The display test processing tool determines whether the display application has entered the display test mode via the network. If yes, proceed to step A6; otherwise, jump back to step A5.

[0058] Step A6: The display test processing tool generates and sends a display signal based on the test cases;

[0059] Step A7: The display excitation device reads the display signal from the display test processing tool, generates the display test excitation, and sends it to the display application;

[0060] Step A8: The display test processing tool sends a command to the high-speed camera device to start high-speed video recording via the network;

[0061] Step A9: The high-speed camera device reads the command to start high-speed camera via the network. If the command is received, proceed to step A10; otherwise, proceed to step A9.

[0062] Step A10: The high-speed camera device starts high-speed video recording to acquire display information and generates a display signal for transmission;

[0063] Step A11: The display test processing tool reads the display signal from the high-speed camera device via the network. If there is a display signal, proceed to step A12; otherwise, proceed to step A8.

[0064] Step A12: The display test processing tool automatically parses the displayed signals and determines whether the test criteria are met, and generates a test report;

[0065] Step A13: The display test processing tool sends a command to the high-speed camera device to shut down the high-speed camera via the network;

[0066] Step A14: The high-speed camera device reads the command to turn off the high-speed camera via the network. If the command is received, proceed to step A15; otherwise, proceed to step A14.

[0067] Step A15: The high-speed camera device sends a high-speed camera shutdown signal to the display test processing tool via the network to shut down the high-speed camera;

[0068] Step A16: The display test processing tool reads the high-speed camera shutdown signal from the network. If no signal is received, proceed to step A13; if a signal is received, the process ends.

[0069] The application testing process includes:

[0070] Step B1: The application displays whether it is in test mode based on the operating status of the integrated modular avionics system. If not, proceed to step B2; if yes, jump to step B3.

[0071] Step B2: The display application reads the display signals of each stationary application through the integrated modular avionics platform, processes them, and then displays them;

[0072] Step B3: The display application reads the command to enter the display test mode through discrete quantity. If received, proceed to step B4; otherwise, jump to step B3.

[0073] Step B4: Send the display application to the display excitation device via discrete quantities to enter the display test mode;

[0074] Step B5: The display application reads the display signal from the display excitation device, processes it, displays it, and then ends.

[0075] It is understood that those skilled in the art can make equivalent substitutions or modifications to the technical solution and inventive concept of the present invention, and all such substitutions or modifications should fall within the protection scope of the appended claims.

Claims

1. A testable display system based on an integrated modular avionics architecture, comprising an integrated modular avionics platform, a resident application, and a display application, characterized in that... The integrated modular avionics platform provides common resources to both the resident application and the display application. The display application determines whether to enter the display test mode based on the operating status of the integrated modular avionics system and external signals. In the non-display test mode, the display signal of the display application comes from the resident application. In display test mode, the display signal for the display application comes from an external display excitation device.

2. The testable display system based on integrated modular avionics architecture according to claim 1, wherein The common resources provided by the integrated modular avionics platform include computing, networking, and interfaces.

3. The testable display system based on integrated modular avionics architecture of claim 1, wherein The resident application uses public resources to implement aircraft-level functionality, and then provides display signals to the display application; The display application integrates and processes the display functions of all resident applications, receives display signals from different resident applications or display excitation devices, processes them through display logic, and sends them to the display screen for display.

4. A test method implemented by the testable display system based on the integrated modular avionics architecture of any one of claims 1 to 3 and the ground test system, characterized in that The ground testing system includes high-speed camera equipment, display excitation equipment, and display test processing tools. The high-speed camera equipment is used to capture the display images and digitize the image information before transmitting it to the display test processing tools. The display excitation device generates display excitation based on the display signals from the display test processing tool and transmits them to the display application. The display test processing tool provides a human-computer interaction interface for testers to edit, manage, and generate display test cases. Based on the test cases, it generates display signals for the display excitation device and can parse the digital information from the high-speed camera and automatically generate test results and test reports.

5. A test method according to claim 4, characterised in that The display test processing tool, display excitation device, and high-speed camera device interact via network, while the display application and display excitation device interact via discrete quantities.

6. A test method according to claim 4, characterised in that The testing process for the ground testing system includes: Step A1: The test processing tool provides an interface for testers to generate and display test cases; Step A2: At the start of the test, the display test processing tool controls the display excitation device to send a command to the display application to enter the display test mode; Step A3: The display excitation device determines whether the display application has entered the display test mode. If yes, proceed to step A4; otherwise, jump to step A3. Step A4: The display excitation device sends the display application to the display test processing tool to enter the display test mode; Step A5: The display test processing tool determines whether the display application has entered the display test mode. If yes, proceed to step A6; otherwise, jump to step A5. Step A6: The display test processing tool generates and sends a display signal based on the test cases; Step A7: The display excitation device reads the display signal from the display test processing tool, generates the display test excitation, and sends it to the display application; Step A8: The display test processing tool sends a command to the high-speed camera device to activate high-speed video recording; Step A9: The high-speed camera device reads the command to activate high-speed camera. If the command is received, proceed to step A10; otherwise, proceed to step A9. Step A10: The high-speed camera device starts high-speed video recording to acquire display information and generates a display signal for transmission; Step A11: The display test processing tool reads the display signal from the high-speed camera device. If there is a display signal, proceed to step A12; otherwise, proceed to step A8. Step A12: The display test processing tool automatically parses the displayed signals and determines whether the test criteria are met, and generates a test report; Step A13: The display test processing tool sends a command to the high-speed camera device to shut down the high-speed camera; Step A14: The high-speed camera device reads the command to turn off the high-speed camera. If the command is received, proceed to step A15; otherwise, proceed to step A14. Step A15: The high-speed camera device sends a high-speed camera shutdown signal to the display test processing tool to shut down the high-speed camera; Step A16: Display the test processing tool to read the high-speed camera shutdown signal. If no signal is received, proceed to step A13. If a signal is received, the process ends.

7. A test method according to claim 4, wherein Includes displaying the application testing process, including: Step B1: The application displays whether it is in test mode based on the operating status of the integrated modular avionics system. If not, proceed to step B2; if yes, jump to step B3. Step B2: The display application reads the display signals of each stationary application through the integrated modular avionics platform, processes them, and then displays them; Step B3: The application reads the command to enter the display test mode. If received, proceed to step B4; otherwise, jump back to step B3. Step B4: The display application sends a message to the display excitation device indicating that it has entered display test mode; Step B5: The display application reads the display signal from the display excitation device, processes it, displays it, and then ends.

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