Display picture monitoring system and method for cabin test

Abstract

The invention provides a display picture monitoring system and method for a cabin test, and belongs to the technical field of cabin monitoring. The system comprises a cabin display screen, an image acquisition module, an image analysis module and a fault alarm module. The system collects image data of a cabin display screen in real time through an image collection module, preprocesses the image data through an image analysis module, carries out image analysis on the preprocessed image data, extracts image features, and judges whether a display picture corresponding to the image features is abnormal or not based on a preset threshold value. And finally, when the fault alarm module judges that the display picture is abnormal, a fault alarm is given in a preset alarm mode, so that the display picture fault can be found and reported in time, and the accuracy of cabin test data is ensured. Meanwhile, the system can automatically detect display picture faults, manual intervention is reduced, and the monitoring efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cockpit monitoring, and in particular to a display screen monitoring system and method for cockpit testing. Background Art

[0002] In modern aviation and automotive cockpit tests, the cockpit display screen is used to display various key data and operation information, and its status directly affects the reliability and safety of the test results. Existing technologies mainly rely on manual inspection or simple hardware self-test, which cannot monitor the status of the display screen in real time and comprehensively, which easily leads to untimely fault detection and affects the test results. Therefore, there is an urgent need for a system that can automatically monitor the display screen in real time to improve the accuracy and reliability of the test. Summary of the invention

[0003] In view of this, an embodiment of the present invention provides a display screen monitoring system and method for cockpit testing, so as to solve the problem that it is difficult to monitor the status of the display screen in real time and comprehensively during the existing cockpit testing process.

[0004] The technical solution adopted by the present invention is:

[0005] In a first aspect, the present invention provides a display screen monitoring system for cockpit testing, comprising: a cockpit display screen, an image acquisition module, an image analysis module and a fault alarm module; the image acquisition module is connected to an input end of the image analysis module, and the fault alarm module is connected to an output end of the image analysis module; wherein,

[0006] The image acquisition module is used to collect image data of the cockpit display screen in real time;

[0007] The image analysis module is used to preprocess the image data, perform image analysis on the preprocessed image data, extract image features, and determine whether the display screen corresponding to the image features is abnormal based on a preset threshold;

[0008] The fault alarm module is used to issue a fault alarm through a preset alarm method when it is determined that the display image is abnormal.

[0009] Furthermore, the image analysis module includes a data acquisition unit and a data processing unit; the data acquisition unit is connected to the data processing unit via a high-speed transmission interface; wherein,

[0010] The data acquisition unit is used to centrally collect the image data collected by the image acquisition module and perform image preprocessing on the image data to obtain preprocessed image data; the image preprocessing operation includes noise reduction, image enhancement and data filtering;

[0011] The data analysis unit is used to perform image analysis on the preprocessed image data through an image processing algorithm, extract image features, and determine whether the image features exceed the preset threshold based on the preset threshold. If the preset threshold is exceeded, it is determined that the display screen is abnormal.

[0012] Furthermore, the image analysis is performed on the preprocessed image data by an image processing algorithm to extract image features, and based on a preset threshold, it is determined whether the image features exceed a preset threshold, including:

[0013] Perform brightness analysis on the pre-processed image data, detect the overall brightness change of the image, and determine whether the overall brightness change exceeds the preset brightness threshold. If the overall brightness change exceeds the preset brightness threshold, the display screen has uneven brightness abnormality;

[0014] Performing image contrast detection on the preprocessed image data, and judging whether the detected image contrast exceeds the preset contrast according to the preset contrast, if the image contrast exceeds the preset contrast, the display screen has contrast abnormality;

[0015] The pre-processed image data is subjected to color detection through the OpenCV tool, and the detected image color is judged to be abnormal based on the preset color change threshold. If the image color change exceeds the preset color change threshold, the displayed image has color distortion abnormality;

[0016] The preprocessed image data is analyzed for inter-frame differences in turn, and a preset inter-frame difference threshold is used to determine whether there is an inter-frame difference between the two frames of the image. If there is an inter-frame difference, the displayed image has a lag abnormality.

[0017] Furthermore, the image acquisition module is specifically a camera installed in front of the display screen, and the camera is connected to the image analysis module via a wired connection or a wireless connection.

[0018] Furthermore, the system also includes a communication module and a monitoring center; the communication module is connected to the output end of the image analysis module, and the monitoring center establishes a communication connection with the communication module through a preset communication network; wherein the communication module transmits the real-time status of the cockpit display screen and abnormal information of the display screen to the monitoring center through the preset communication network; the monitoring center displays the real-time status of the cockpit display screen and abnormal information of the display screen in real time through the monitoring interface.

[0019] Furthermore, the system also includes a storage module, which is connected to the image analysis module and is used to store status data of the cockpit display screen and abnormal information of the display screen.

[0020] In a second aspect, an embodiment of the present invention provides a display screen monitoring method for a cockpit test, comprising:

[0021] Collecting image data of a display screen on a cockpit display screen, and preprocessing the image data of the display screen to obtain preprocessed image data;

[0022] Perform image analysis on the preprocessed image data, and determine whether the displayed image has display abnormality according to a preset threshold;

[0023] If there is an abnormality in the display screen, an alarm signal will be issued according to the preset alarm method and the abnormal information of the display screen will be recorded.

[0024] Furthermore, the performing of image analysis on the preprocessed image data and judging whether the displayed image has display abnormality according to a preset threshold value includes:

[0025] Perform brightness analysis on the pre-processed image data, detect the overall brightness change of the image, and determine whether the overall brightness change exceeds the preset brightness threshold. If the overall brightness change exceeds the preset brightness threshold, the display screen has uneven brightness abnormality;

[0026] Performing image contrast detection on the preprocessed image data, and judging whether the detected image contrast exceeds the preset contrast according to the preset contrast, if the image contrast exceeds the preset contrast, the display screen has contrast abnormality;

[0027] The pre-processed image data is subjected to color detection through the OpenCV tool, and the detected image color is judged to be abnormal based on the preset color change threshold. If the image color change exceeds the preset color change threshold, the displayed image has color distortion abnormality;

[0028] The preprocessed image data is analyzed for inter-frame differences in turn, and a preset inter-frame difference threshold is used to determine whether there is an inter-frame difference between the two frames of the image. If there is an inter-frame difference, the displayed image has a lag abnormality.

[0029] In summary, the beneficial effects of the present invention are as follows:

[0030] Through the display screen monitoring system for cockpit testing provided by the present invention, the system collects image data of the cockpit display screen in real time through the image acquisition module, and uses the image analysis module to preprocess the image data, and performs image analysis on the preprocessed image data to extract image features, and judge whether the display screen corresponding to the image features is abnormal based on the preset threshold. Finally, when the fault alarm module determines that the display screen is abnormal, it issues a fault alarm through a preset alarm method, which can timely discover and report display screen faults and ensure the accuracy of cockpit test data. At the same time, the system of the present invention can also automatically detect display screen faults, reduce manual intervention, and improve monitoring efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the following is a brief introduction to the drawings required for use in the embodiment of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work, and these are all within the protection scope of the present invention.

[0032] Figure 1 This is a structural diagram of a display screen monitoring system for cockpit testing of the present invention;

[0033] Figure 2 The present invention is a flow chart of display screen monitoring for cockpit testing. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. If there is no conflict, the various features of the present invention and the embodiments can be combined with each other, all within the scope of protection of the present invention.

[0035] Embodiment 1:

[0036] See also Figure 1 , Figure 1 FIG. 1 is a structural diagram of a display screen monitoring system for cockpit testing in Example 1 of the present invention. Figure 1 As shown, the display screen monitoring system for cockpit test provided by the present invention includes: a cockpit display screen, an image acquisition module, an image analysis module and a fault alarm module; the image acquisition module is connected to the input end of the image analysis module, and the fault alarm module is connected to the output end of the image analysis module; wherein,

[0037] The image acquisition module is used to collect image data of the cockpit display screen in real time;

[0038] The image analysis module is used to preprocess the image data, perform image analysis on the preprocessed image data, extract image features, and determine whether the display screen corresponding to the image features is abnormal based on a preset threshold;

[0039] The fault alarm module is used to issue a fault alarm through a preset alarm method when it is determined that the display image is abnormal.

[0040] Specifically, in the embodiment of the present invention, the working process of the system is as follows:

[0041] Image data acquisition: The image acquisition module collects image data of the display screen in real time. The sensor can be a high-resolution camera that can capture detailed changes in the display screen.

[0042] Data transmission: The collected image data is transmitted to the data acquisition unit through a wired or wireless connection. The data acquisition unit performs preliminary processing on the data, filters out noise and invalid data, and ensures the integrity and accuracy of the transmitted data.

[0043] Data processing and analysis: The data acquisition unit transmits the preliminarily processed image data to the data processing unit. The data processing unit uses image processing algorithms to analyze the data, extract image features (such as brightness, contrast, color changes, etc.), and judge whether the display screen is normal based on the preset threshold.

[0044] Fault detection and alarm: If the data processing unit detects an abnormality in the display (such as uneven brightness, color distortion, image lag, etc.), the fault alarm module is immediately triggered. The fault alarm module issues an alarm through sound, light signal or other means to alert the technicians.

[0045] Fault information transmission: At the same time, the fault alarm module transmits the fault information to the monitoring center or other related systems through the communication module. The communication module can use wireless network, Ethernet or other data transmission methods to ensure real-time transmission and accuracy of data.

[0046] Fault handling and recording: After the monitoring center receives the fault information, the technicians can handle the fault in a timely manner according to the alarm information and record the fault information for subsequent analysis and maintenance.

[0047] Specifically, in the system of the embodiment of the present invention, the cockpit display screen is used to display cockpit test data and operation information.

[0048] Further, in the embodiment of the present invention, referring to Figure 1 As shown, the image analysis module includes a data acquisition unit and a data processing unit; the data acquisition unit is connected to the data processing unit via a high-speed transmission interface. The data acquisition unit is used to centrally collect the image data acquired by the image acquisition module and perform image preprocessing on the image data to obtain preprocessed image data; the image preprocessing operation includes noise reduction, image enhancement and data filtering.

[0049] The data analysis unit is used to perform image analysis on the preprocessed image data through an image processing algorithm, extract image features, and determine whether the image features exceed the preset threshold based on the preset threshold. If the preset threshold is exceeded, it is determined that the display screen is abnormal.

[0050] Specifically, in some embodiments, the data acquisition unit continuously receives the image data acquired by the image acquisition module, and performs preliminary preprocessing on the data, including noise reduction, image enhancement and other operations, to ensure the quality of the data and the stability of transmission.

[0051] The image data after preliminary preprocessing is transmitted to the data processing unit through a high-speed transmission interface (such as Ethernet, USB3.0). Specifically, a high-bandwidth transmission interface can be used to transmit data to reduce delay.

[0052] Furthermore, in an embodiment of the present invention, image analysis is performed on the preprocessed image data by an image processing algorithm to extract image features, and based on a preset threshold, it is determined whether the image features exceed a preset threshold, specifically including:

[0053] Perform brightness analysis on the preprocessed image data to detect the overall brightness change of the image and determine whether the overall brightness change exceeds the preset brightness threshold. If the overall brightness change exceeds the preset brightness threshold, the displayed image has uneven brightness abnormality.

[0054] The brightness analysis process can draw a grayscale histogram of the image to understand the distribution of the number of pixels at each grayscale level in the image and determine the brightness distribution of the image. In addition, the average grayscale value of all pixels in the image can be calculated to obtain the overall brightness level of the image, and then determine the brightness change before and after the image.

[0055] The pre-processed image data is subjected to image contrast detection, and according to the preset contrast, it is determined whether the detected image contrast exceeds the preset contrast. If the image contrast exceeds the preset contrast, the display screen has contrast abnormality. The image contrast detection can be performed by comparing the image pixels of different frames before and after, or by comparing based on the histogram of two pictures.

[0056] The preprocessed image data is subjected to color detection through the OpenCV tool, and the detected image color is judged to be abnormal based on the preset color change threshold. If the image color change exceeds the preset color change threshold, the displayed image has color distortion abnormality.

[0057] The preprocessed image data is analyzed for inter-frame differences in turn, and a preset inter-frame difference threshold is used to determine whether there is an inter-frame difference between the two frames of the image. If there is an inter-frame difference, the displayed image has a lag abnormality.

[0058] The embodiment of the present invention realizes judging the image processing result according to the preset threshold value. For example, the threshold values ​​of brightness, contrast and color change are set, and when it is detected that these features exceed the threshold value, it is judged that the display image is abnormal.

[0059] Furthermore, in an embodiment of the present invention, the image acquisition module is specifically a camera installed in front of the display screen, and the camera is connected to the image analysis module via a wired connection or a wireless connection.

[0060] Specifically, in some embodiments, the present invention chooses to install a high-resolution camera in front of the cockpit display screen. The camera installation position should ensure that the display screen can be fully covered, and the angle and focal length can be adjusted to adapt to display screens of different sizes and types. At the same time, the resolution and frame rate of the camera should meet the requirements of real-time acquisition. It is recommended to use a camera with at least 1080p resolution and 30fps.

[0061] In addition, the embodiment of the present invention also includes configuring an image sensor (i.e., a camera), specifically configuring the parameters of the image sensor through a data acquisition unit, including resolution, frame rate, exposure time, etc., to ensure that the camera can work normally under different lighting conditions. The image sensor can be connected to the data acquisition unit via a wired (such as USB, HDMI) or wireless (such as Wi-Fi, Bluetooth). Wireless connection is suitable for scenarios that require flexible installation, while wired connection provides more stable data transmission.

[0062] Furthermore, in an embodiment of the present invention, the system further includes a communication module and a monitoring center; the communication module is connected to the output end of the image analysis module, and the monitoring center establishes a communication connection with the communication module through a preset communication network. The communication module transmits the real-time status of the cockpit display screen and abnormal information of the display screen to the monitoring center through the preset communication network.

[0063] In the embodiment of the present invention, the communication module is mainly used for transmitting the fault information of the cockpit display screen. When transmitting information, the preset communication network can adopt a wireless network, Ethernet or other data transmission methods to ensure the real-time transmission and accuracy of the data. The image analysis module transmits the fault information to the monitoring center through the communication module. The fault information includes detailed information such as the current status of the display screen, the fault type, and the time when the fault occurred.

[0064] The monitoring center displays the real-time status of the cockpit display screen and abnormal information of the display screen through the monitoring interface. Technicians can remotely view and analyze the working status of the display screen and take corresponding measures in time.

[0065] Furthermore, in an embodiment of the present invention, the system also includes a storage module, which is connected to the image analysis module and is used to store status data of the cockpit display screen and abnormal information of the display screen to facilitate subsequent fault analysis and system maintenance.

[0066] Furthermore, in the embodiment of the present invention, the specific working process of the fault alarm module is as follows:

[0067] 1) Anomaly Detection

[0068] When the data processing unit detects an abnormality in the display image, the alarm mechanism is immediately triggered. The abnormality includes but is not limited to uneven brightness, color distortion, abnormal contrast and image lag.

[0069] 2) Alarm signal

[0070] The fault alarm module sends out an alarm signal through an audible alarm, indicator light or other alarm device to alert the technician to the display fault. The audible alarm can be set to different tones and volumes to distinguish different types of faults; the indicator light can be set to different colors and flashing frequencies to indicate the severity of the fault.

[0071] In addition, in the embodiment of the present invention, after the image analysis module finds that the cockpit display screen has a fault, the specific fault handling and recording process is as follows:

[0072] 1) Troubleshooting

[0073] Based on the alarm information, the technicians quickly went to the site to check the display screen failure and took corresponding measures, such as adjusting the display screen parameters and replacing faulty components.

[0074] 2) Fault record

[0075] The technicians record the detailed information of the fault, including the fault type, occurrence time, treatment measures and treatment results. This information will be stored in the database of the monitoring system for subsequent analysis and maintenance.

[0076] 3) Regular maintenance

[0077] According to the fault records and system monitoring data, formulate a regular maintenance plan for the display screen to ensure that the display screen is always in the best working condition.

[0078] The system of the embodiment of the present invention has the following technical advantages:

[0079] 1. Real-time monitoring: The system can collect and analyze the status of the display screen in real time to ensure the continuity and reliability of the cockpit test.

[0080] 2. Automatic detection: The system automatically detects display screen failures, reduces manual intervention, and improves monitoring efficiency.

[0081] 3. High reliability: The system can detect and report display screen failures in a timely manner to ensure the accuracy of cockpit test data.

[0082] 4. Strong adaptability: The system can adapt to different types of display screens and cockpit test environments and has broad application prospects.

[0083] Example 2: Reference Figure 2As shown, an embodiment of the present invention further provides a display screen monitoring method for a cockpit test, comprising:

[0084] Collecting image data of a display screen on a cockpit display screen, and preprocessing the image data of the display screen to obtain preprocessed image data;

[0085] Perform image analysis on the preprocessed image data, and determine whether the displayed image has display abnormality according to a preset threshold;

[0086] If there is an abnormality in the display screen, an alarm signal will be issued according to the preset alarm method and the abnormal information of the display screen will be recorded.

[0087] Furthermore, in an embodiment of the present invention, image analysis is performed on the preprocessed image data, and judging whether the displayed image has display abnormality according to a preset threshold value includes:

[0088] Perform brightness analysis on the pre-processed image data, detect the overall brightness change of the image, and determine whether the overall brightness change exceeds the preset brightness threshold. If the overall brightness change exceeds the preset brightness threshold, the display screen has uneven brightness abnormality;

[0089] Performing image contrast detection on the preprocessed image data, and judging whether the detected image contrast exceeds the preset contrast according to the preset contrast, if the image contrast exceeds the preset contrast, the display screen has contrast abnormality;

[0090] The pre-processed image data is subjected to color detection through the OpenCV tool, and the detected image color is judged to be abnormal based on the preset color change threshold. If the image color change exceeds the preset color change threshold, the displayed image has color distortion abnormality;

[0091] The preprocessed image data is analyzed for inter-frame differences in turn, and a preset inter-frame difference threshold is used to determine whether there is an inter-frame difference between the two frames of the image. If there is an inter-frame difference, the displayed image has a lag abnormality.

[0092] The display screen monitoring method for cockpit testing according to the embodiment of the present invention can monitor the status of the display screen in real time and automatically, and promptly discover and report display screen faults, thereby improving the reliability and accuracy of the cockpit testing.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technologies therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A display screen monitoring system for cockpit testing, characterized in that: include: Cockpit display screen, image acquisition module, image analysis module and fault alarm module; The image acquisition module is connected to the input end of the image analysis module, and the fault alarm module is connected to the output end of the image analysis module; wherein, The image acquisition module is used to collect image data of the cockpit display screen in real time; The image analysis module is used to preprocess the image data, perform image analysis on the preprocessed image data, extract image features, and determine whether the display screen corresponding to the image features is abnormal based on a preset threshold; The fault alarm module is used to issue a fault alarm through a preset alarm method when it is determined that the display image is abnormal.

2. The display screen monitoring system for cockpit testing according to claim 1, characterized in that: The image analysis module includes a data acquisition unit and a data processing unit; the data acquisition unit is connected to the data processing unit via a high-speed transmission interface; wherein, The data acquisition unit is used to centrally collect the image data collected by the image acquisition module and perform image preprocessing on the image data to obtain preprocessed image data; the image preprocessing operation includes noise reduction, image enhancement and data filtering; The data analysis unit is used to perform image analysis on the preprocessed image data through an image processing algorithm, extract image features, and determine whether the image features exceed the preset threshold based on the preset threshold. If the preset threshold is exceeded, it is determined that the display screen is abnormal.

3. The display screen monitoring system for cockpit testing according to claim 2, characterized in that: The image processing algorithm is used to analyze the preprocessed image data, extract image features, and determine whether the image features exceed a preset threshold based on a preset threshold, including: Perform brightness analysis on the pre-processed image data, detect the overall brightness change of the image, and determine whether the overall brightness change exceeds the preset brightness threshold. If the overall brightness change exceeds the preset brightness threshold, the display screen has uneven brightness abnormality; Performing image contrast detection on the preprocessed image data, and judging whether the detected image contrast exceeds the preset contrast according to the preset contrast, if the image contrast exceeds the preset contrast, the display screen has contrast abnormality; The pre-processed image data is subjected to color detection through the OpenCV tool, and the detected image color is judged to be abnormal based on the preset color change threshold. If the image color change exceeds the preset color change threshold, the displayed image has color distortion abnormality; The preprocessed image data is analyzed for inter-frame differences in turn, and a preset inter-frame difference threshold is used to determine whether there is an inter-frame difference between the two frames of the image. If there is an inter-frame difference, the displayed image has a lag abnormality.

4. The display screen monitoring system for cockpit testing according to claim 1, characterized in that: The image acquisition module is specifically a camera installed in front of the display screen, and the camera is connected to the image analysis module by wired connection or wireless connection.

5. The display screen monitoring system for cockpit testing according to claim 1, characterized in that: It also includes a communication module and a monitoring center; the communication module is connected to the output end of the image analysis module, and the monitoring center establishes a communication connection with the communication module through a preset communication network; wherein the communication module transmits the real-time status of the cockpit display screen and abnormal information of the display screen to the monitoring center through the preset communication network; the monitoring center displays the real-time status of the cockpit display screen and abnormal information of the display screen in real time through the monitoring interface.

6. The display screen monitoring system for cockpit testing according to claim 1, characterized in that: It also includes a storage module, which is connected to the image analysis module and is used to store status data of the cockpit display screen and abnormal information of the display screen.

7. A display screen monitoring method for cockpit testing, characterized in that: include: Collecting image data of a display screen on a cockpit display screen, and preprocessing the image data of the display screen to obtain preprocessed image data; Perform image analysis on the preprocessed image data, and determine whether the displayed image has display abnormality according to a preset threshold; If there is an abnormality in the display screen, an alarm signal will be issued according to the preset alarm method and the abnormal information of the display screen will be recorded.

8. The display screen monitoring method for cockpit testing according to claim 7, characterized in that: The performing of image analysis on the pre-processed image data and judging whether the displayed image has display abnormality according to a preset threshold value includes: Perform brightness analysis on the pre-processed image data, detect the overall brightness change of the image, and determine whether the overall brightness change exceeds the preset brightness threshold. If the overall brightness change exceeds the preset brightness threshold, the display screen has uneven brightness abnormality; Performing image contrast detection on the preprocessed image data, and judging whether the detected image contrast exceeds the preset contrast according to the preset contrast, if the image contrast exceeds the preset contrast, the display screen has contrast abnormality; The pre-processed image data is subjected to color detection through the OpenCV tool, and the detected image color is judged to be abnormal based on the preset color change threshold. If the image color change exceeds the preset color change threshold, the displayed image has color distortion abnormality; The preprocessed image data is analyzed for inter-frame differences in turn, and a preset inter-frame difference threshold is used to determine whether there is an inter-frame difference between the two frames of the image. If there is an inter-frame difference, the displayed image has a lag abnormality.

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