Video monitoring automatic glancing method and system for aeroengine test run

Abstract

The invention relates to a video monitoring automatic glancing method and system for an aero-engine test. The method comprises the following steps: determining a to-be-glanded position of an aero-engine; the number and the scanning range of automatic scanning equipment are determined according to the position to be scanned; planning a glancing path based on the automatic glancing equipment, and setting a glancing strategy on the glancing path; and associating the glancing strategy with a test run program, and carrying out glancing according to the test run program. The existing video monitoring process is optimized through an automatic means, and the problems of low efficiency, incomplete monitoring, insufficient operation standardization and the like caused by manual operation are solved. By pre-determining the to-be-glanded position of the aero-engine and planning the automatic glancing path and strategy based on the positions, the invention realizes the standardization of the monitoring work. Manual operation is replaced by automatic glancing, errors and omissions caused by human factors are reduced, and the reliability and comprehensiveness of monitoring are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of engine test state monitoring, and in particular relates to an automatic scanning method and system for video monitoring of an aero-engine test. Background Art

[0002] In order to ensure the safety and efficiency of aircraft engines during ground tests, it is essential to achieve all-round and real-time monitoring of the engine status. In this way, once the engine has oil and gas leakage from pipe joints, abnormal vibration, abnormal temperature rise or any other abnormal situation, the test personnel can immediately detect and take corresponding measures to effectively prevent potential accidents. However, the current aircraft engine video monitoring system mainly relies on manual operation of the test personnel for control and monitoring, which has shown many limitations and shortcomings in practical applications.

[0003] First, the frequency of manual operation greatly affects the efficiency and accuracy of monitoring. According to statistics, during the entire process of engine testing, the tester needs to manually switch the monitoring scanning area once a minute on average, and each manual switching operation takes about 10 seconds. This frequent manual intervention not only makes the monitoring process cumbersome and complicated, increasing the workload of the tester, but also increases the risk of missed detection due to the intervention of human factors, that is, some key abnormal signs may be missed during the switching interval.

[0004] Secondly, the monitoring coverage of the manual operation system is limited and it is difficult to meet the needs of comprehensive monitoring. Limited by the physical limitations of manual operation and the design of the operation interface, the existing monitoring methods can usually only switch between four preset scanning screens. This is obviously far from enough for aircraft engines with complex structures and numerous components. Many key areas may be in the monitoring blind spot, so potential problems cannot be discovered in time, affecting the safety and effectiveness of the test run.

[0005] In addition, the existing monitoring methods lack a set of clear and systematic scanning position specifications. In actual operation, test personnel often choose scanning positions based on personal experience or temporary judgment. This arbitrariness not only leads to inconsistency in monitoring, but also makes it difficult to ensure that each test run can meet comprehensive and detailed inspection standards. The lack of standardized scanning guidelines has greatly reduced the scientificity and effectiveness of monitoring work, which is not conducive to long-term safety management and fault prevention.

[0006] In summary, the problems existing in the current aircraft engine video monitoring system in manual operation mode not only reduce the monitoring efficiency and increase safety hazards, but also limit the comprehensiveness and accuracy of data collection during the engine test. Therefore, it is urgent to develop a more intelligent and automated monitoring system to achieve accurate, efficient and comprehensive monitoring of the aircraft engine test process. Summary of the invention

[0007] The object of the present invention is to provide a method and system for automatic scanning of video monitoring of aircraft engine test run to solve the above-mentioned problem.

[0008] To achieve the above object, the present invention adopts the following technical solutions: An automatic scanning method for video monitoring of an aircraft engine test run, comprising: Determine the location of the aircraft engine to be scanned; Determining the number and scanning range of automatic scanning devices for the position to be scanned; Planning a scanning path based on an automatic scanning device and setting a scanning strategy on the scanning path; Associate the scanning strategy with the test procedure and perform scanning according to the test procedure.

[0009] Further, the determining of the position of the aircraft engine to be scanned includes: According to the aircraft engine structure, the test parts required by the test outline, the parts installed and disassembled before and after the test, the abnormal leakage points that appeared during the previous test, the scanning positions during the test, and the scanning positions required when installing and disassembling the engine on and off the platform before and after the test.

[0010] Furthermore, the monitoring screen is divided into a plurality of automatic scanning areas according to the position of the scanning position in the monitoring screen.

[0011] Furthermore, the method of determining the number of automatic scanning devices and the scanning range for the positions to be scanned includes: dividing the automatic scanning area into upper, lower, left and right scanning areas according to the range that can be monitored by the equipment, the automatic scanning positions and the scanning requirements; and determining the number of automatic scanning devices based on a one-to-one correspondence with all the positions to be scanned of the aircraft engine.

[0012] Furthermore, planning a scanning path based on the automatic scanning device includes: A variety of paths are planned for each scanning device. Based on the running trajectory of the scanning device, the areas that each scanning device needs to scan are covered and planned, and each scanning area is set in an automatic scanning path in sequence.

[0013] Further, setting a scanning strategy on the scanning path includes: According to the test run time of the aircraft engine in various operating states, the scanning time is set for the scanning area in each path, and an automatic scanning strategy table is established. According to the automatic scanning strategy table, the scanning areas included in each path are scanned in sequence, and multiple paths are scanned simultaneously; The automatic scanning strategy table includes the scanning time and scanning times corresponding to each scanning area.

[0014] Furthermore, associating the scanning strategy with the test program and performing scanning according to the test program includes: The established automatic scanning strategy table is associated with the test program. After the test program is sorted out, the scanning time of the key positions that need to be scanned in each test program is increased. After the automatic scanning strategy table is associated with the test program, when each step in the test program is switched, the automatic scanning strategy is switched to the corresponding strategy.

[0015] Furthermore, when the test step exceeds the running time and has not switched to the next step, the automatic scanning strategy will stay on the last scanning area and wait for the next test step.

[0016] A video monitoring automatic scanning system for aircraft engine test is used for running the video monitoring automatic scanning method for aircraft engine test, comprising a monitoring module, a path planning module, a scanning strategy module and a storage module; the monitoring module and the scanning strategy module are both connected to the path planning module, and the monitoring module is connected to the storage module; the monitoring module scans the aircraft engine test based on the path and scanning strategy planned by the path planning module and the scanning strategy module, and stores the scans in the storage module.

[0017] Furthermore, the positions monitored by the monitoring module include the positions tested according to the aircraft engine structure and the test run outline requirements, the positions installed and disassembled before and after the test run, the abnormal leakage points that appeared during the previous test run, the scanning positions during the test run, and the scanning positions required for the installation and disassembly of the engine on and off the platform before and after the test run.

[0018] Compared with the prior art, the present invention has the following technical effects: The technical solution of the present invention proposes a video monitoring automatic scanning method and system for aircraft engine test, which optimizes the existing video monitoring process through automation means and solves the problems of low efficiency, incomplete monitoring and insufficient operation standardization caused by manual operation.

[0019] By predetermining the positions of aircraft engines to be scanned and planning automatic scanning paths and strategies based on these positions, the present invention achieves standardization of monitoring work. Each test run step clearly specifies the scanning requirements to ensure that each test run can be carried out according to unified standards, greatly improving the consistency and accuracy of monitoring. Automated scanning replaces manual operation, reduces errors and omissions caused by human factors, and improves the reliability and comprehensiveness of monitoring.

[0020] The automatic scanning system can automatically switch the scanning area according to the test procedure, without frequent manual operation, significantly reducing the manual operation time and improving the test efficiency. The application of the automation system frees test personnel from tedious manual monitoring tasks and allows them to focus on other tasks that require more human judgment and intervention, thereby improving personnel utilization and job satisfaction.

[0021] By rationally planning the number and scanning range of automatic scanning devices and setting multiple scanning paths and strategies, the present invention can achieve more extensive and detailed monitoring of aircraft engines, covering more key parts and effectively reducing monitoring blind spots. The automatic scanning system can continuously and uninterruptedly scan according to the preset strategy, avoiding missed inspections caused by human negligence and improving the safety and reliability of the test run.

[0022] The automatic scanning method of the present invention provides an important basis for the automation of aircraft engine test. Through close association with the test program, the automatic scanning system can automatically adjust the scanning strategy as the test steps proceed, creating conditions for achieving a higher level of automated test.

[0023] Automated scanning not only improves the real-time monitoring efficiency of the test process, but also provides rich and accurate video data for subsequent data analysis. These data can be used for troubleshooting, performance evaluation and continuous optimization of the test process, further improving the R&D and production efficiency of aircraft engines.

[0024] In summary, the technical solution of the present invention significantly improves the efficiency, safety and reliability of aircraft engine test by introducing an automated and standardized video monitoring scanning method. This method not only solves many problems existing in the existing manual monitoring system, but also lays a solid foundation for the automated and intelligent development of aircraft engine test. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Logic block diagram of the automatic scanning method. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with the accompanying drawings: Embodiment 1, the present invention provides a video monitoring automatic scanning method for aircraft engine test, comprising: Determine the location of the aircraft engine to be scanned; Determining the number and scanning range of automatic scanning devices for the position to be scanned; Planning a scanning path based on an automatic scanning device and setting a scanning strategy on the scanning path; Associate the scanning strategy with the test procedure and perform scanning according to the test procedure.

[0027] By clearly defining the locations to be scanned, the system can deploy monitoring resources in a targeted manner, avoiding the waste of resources caused by blind monitoring, while ensuring that all key parts are within the monitoring range.

[0028] Determining the number and scanning range of automatic scanning devices ensures comprehensive monitoring while avoiding over-allocation of resources. Through precise calculation, it can be ensured that each location to be scanned is covered by appropriate equipment and the working ranges of the equipment do not overlap, thus improving the overall efficiency of the monitoring system.

[0029] Planning the scanning path and setting the scanning strategy are the key to improving monitoring efficiency. Through scientific path planning, it can ensure that the automatic scanning equipment traverses all the positions to be scanned in the best way, reducing invalid movement and monitoring blind spots. At the same time, the setting of the scanning strategy can be adjusted according to the different stages and needs of the engine test, making the monitoring more flexible and intelligent.

[0030] The synchronization of monitoring and test procedures is achieved, ensuring the real-time and effectiveness of monitoring. By associating the scanning strategy with the test procedure, the system can automatically adjust the focus and scope of monitoring according to the progress of the test without manual intervention. This synchronization mechanism greatly improves the automation of monitoring, reduces human errors and monitoring blind spots, and provides more reliable safety protection for engine test.

[0031] In summary, the video monitoring automatic scanning method of the present invention realizes comprehensive, efficient and intelligent monitoring of the aircraft engine test process by accurately determining the position to be scanned, reasonably allocating equipment resources, scientifically planning the scanning path and strategy, and closely linking the monitoring with the test program. This method not only improves the accuracy and real-time performance of monitoring, but also greatly reduces manual intervention and monitoring blind spots, providing a strong guarantee for the safety and efficiency of engine test.

[0032] Embodiment 2, the present invention provides a video monitoring automatic scanning method for aircraft engine test, specifically comprising: (1) Determine the scanning requirements: Based on the aircraft engine structure, the key test parts required by the test run outline, the parts that are installed and disassembled before and after the test run, and the abnormal leakage points that occurred during the previous test run, sort out the positions that need to be scanned under various engine operating conditions. This includes the scanning positions during the test run, as well as the scanning positions required before and after the test run, and when the engine is installed and disassembled on and off the platform.

[0033] (2) Determine the automatic scanning device according to the number of cameras arranged on the test bench and the scanning requirements determined in step (1). Divide the automatic scanning area into upper, lower, left, right, and special scanning areas where the scanning position exists according to the range that the device can monitor, the automatic scanning position, and the scanning requirements.

[0034] (3) Planning scanning paths: According to steps (1) and (2), plan multiple paths for each scanning device. Based on the running trajectory of the scanning device, the areas that each scanning device needs to scan are reasonably planned, and each scanning area and the special scanning areas contained in each scanning area are set in the automatic scanning path in sequence.

[0035] (4) Establish a scanning strategy: According to the test time of the aircraft engine under various operating conditions, set the scanning time for the scanning area in each path and establish an automatic scanning strategy. The scanning path and scanning time are different when the operating state is different. When the operating state is the same but the test procedure is different, the scanning path and scanning time may also be different. For example, in the starting state, the starter area needs to be scanned for 1 minute; and in the maximum take-off state, the main oil leak area needs to be scanned for 15 seconds. Therefore, in each operating state. A reasonable automatic scanning strategy needs to be established.

[0036] (5) Associate the test program: Associate the automatic scanning strategy established in step (4) with the test program. After sorting out the test program, increase the scanning time of the key positions that need to be scanned in each test program. For example, a test program 1 needs to focus on the AC generator; a test program 2 needs to focus on the extracorporeal circulation device. After the automatic scanning strategy is associated with the test program, when each step in the test program is switched, the automatic scanning strategy will switch to the corresponding strategy. When the test step exceeds the running time and has not switched to the next step, the automatic scanning strategy will stay on the last scanning area and wait for the next test step.

[0037] The present invention determines the automatic scanning position according to the key parts that need to be monitored during the aircraft engine test, establishes the automatic scanning strategy according to the test program time, and verifies through automatic scanning software that the automatic scanning method can replace manual operation. The method effectively reduces the manual operation time and improves the efficiency of aircraft engine test.

[0038] Take the video surveillance system of a test bench as an example: the scanning device is determined according to the camera layout position, and the automatic scanning device is determined. There are 10 automatic scanning devices in total. According to the focus requirements of the test outline, 27 automatic scanning positions are arranged. According to the position of the scanning position in the monitoring screen, the monitoring screen is divided into 36 automatic scanning areas, as shown in Table 1.

[0039]

[0040] According to the test program time, the scanning path is planned, the time is set, and the automatic scanning strategy based on the aircraft engine test is established. Taking the aircraft bleed air power extraction program as an example, the automatic scanning strategy required for monitoring is shown in Table 2. The scanning areas contained in each path are scanned in sequence, and multiple paths are scanned simultaneously.

[0041]

[0042] The automatic scanning strategy is associated with the test program, and the operating states included in the test program are shown in Table 3.

[0043]

[0044] Among them, the automatic scanning strategy can be added or changed according to the statistics of data that are easy to leak in the future test run. There are 5 strategies listed in Table 3, and 7 should be used in the actual test run. There are 15 test run procedures for a certain type of engine, and a total of 260 (30 types) automatic scanning strategies are arranged in the actual test run.

[0045] After the automatic scanning strategy is associated with the test program, the automatic scanning strategy will switch to the corresponding strategy when each step in the test program switches. When the test step exceeds the running time and the next step is not switched, the automatic scanning strategy will stay on the last scanning area and wait for the next test step.

[0046] 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 above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A video monitoring automatic scanning method for aircraft engine test, characterized in that: include: Determine the location of the aircraft engine to be scanned; Determining the number and scanning range of automatic scanning devices for the position to be scanned; Planning a scanning path based on an automatic scanning device and setting a scanning strategy on the scanning path; Associate the scanning strategy with the test procedure and perform scanning according to the test procedure.

2. The video monitoring automatic scanning method for aircraft engine test according to claim 1 is characterized in that: Determining the position of the aircraft engine to be scanned includes: According to the aircraft engine structure, the test parts required by the test outline, the parts installed and disassembled before and after the test, the abnormal leakage points that appeared during the previous test, the scanning positions during the test, and the scanning positions required when installing and disassembling the engine on and off the platform before and after the test.

3. The video monitoring automatic scanning method for aircraft engine test run according to claim 2 is characterized in that: The monitoring screen is divided into several automatic scanning areas according to the positions of the scanning positions in the monitoring screen.

4. The video monitoring automatic scanning method for aircraft engine test run according to claim 1, characterized in that: The method of determining the number of automatic scanning devices and the scanning range for the positions to be scanned includes: dividing the automatic scanning area into upper, lower, left and right scanning areas according to the range that can be monitored by the equipment, the automatic scanning positions and the scanning requirements; and determining the number of automatic scanning devices based on a one-to-one correspondence with all the positions to be scanned of the aircraft engine.

5. The video monitoring automatic scanning method for aircraft engine test run according to claim 1, characterized in that: The scanning path is planned based on the automatic scanning device, including: A variety of paths are planned for each scanning device. Based on the running trajectory of the scanning device, the areas that each scanning device needs to scan are covered and planned, and each scanning area is set in an automatic scanning path in sequence.

6. The video monitoring automatic scanning method for aircraft engine test run according to claim 1, characterized in that: The step of setting a scanning strategy on the scanning path includes: According to the test run time of the aircraft engine in various operating states, the scanning time is set for the scanning area in each path, and an automatic scanning strategy table is established. According to the automatic scanning strategy table, the scanning areas included in each path are scanned in sequence, and multiple paths are scanned simultaneously; The automatic scanning strategy table includes the scanning time and scanning times corresponding to each scanning area.

7. The video monitoring automatic scanning method for aircraft engine test run according to claim 6, characterized in that: The step of associating the scanning strategy with the test program and scanning according to the test program includes: The established automatic scanning strategy table is associated with the test program. After the test program is sorted out, the scanning time of the key positions that need to be scanned in each test program is increased. After the automatic scanning strategy table is associated with the test program, when each step in the test program is switched, the automatic scanning strategy is switched to the corresponding strategy.

8. The video monitoring automatic scanning method for aircraft engine test run according to claim 7, characterized in that: When the test step exceeds the running time and has not switched to the next step, the automatic scanning strategy will stay on the last scanned area and wait for the next test step.

9. An automatic scanning system for video monitoring of aircraft engine test, characterized in that: A video monitoring automatic scanning method for running an aircraft engine test run as described in any one of claims 1 to 8, comprising a monitoring module, a path planning module, a scanning strategy module and a storage module; the monitoring module and the scanning strategy module are both connected to the path planning module, and the monitoring module is connected to the storage module; the monitoring module scans the aircraft engine test run based on the path and scanning strategy planned by the path planning module and the scanning strategy module, and stores the scans in the storage module.

10. The video monitoring automatic scanning system for aircraft engine test according to claim 9, characterized in that: The monitoring positions of the monitoring module include the test positions required by the aircraft engine structure and test run outline, the installation and disassembly positions before and after the test run, the abnormal leakage points that appeared in the previous test run, the scanning positions during the test run, and the scanning positions required for installation and disassembly of the engine on and off the platform before and after the test run.

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