Device for monitoring interference of static test structural member

Abstract

The utility model provides a device for monitoring interference of a static test structural member, and the device comprises a plurality of strain gauges which are disposed in an area where interference may occur on the structural member, and are used for collecting deformation of the area where interference may occur; the collector is connected with a plurality of strain gauges and is used for converting the deformation collected by the strain gauges into stress; the calculation device is connected with the collector and the display alarm device, and is used for generating a load-stress curve by using the stress converted by the collector and a load in a static test, judging whether the load-stress curve exceeds a threshold value or not, and generating an alarm signal when the load-stress curve exceeds the threshold value; and the display alarm device is used for displaying a load-stress curve in the static test process and giving an alarm when an alarm signal exists. The device for monitoring interference of the static test structural member can perform real-time monitoring in an open space or a narrow space, and is less affected by the environment.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of aircraft static test, and particularly relates to a device for monitoring interference of a static test component. BACKGROUND

[0002] During the process of aircraft static test, a load needs to be applied to the aircraft structure, and then it is observed whether the structure is damaged. During the test process, the component A is prone to collide with the nearby component B after deformation under force, thereby causing inconsistency between the loaded form and the designed force transmission form. To avoid such a situation, it is necessary to monitor whether the component A interferes with the component B due to deformation during the test process.

[0003] The existing interference monitoring method of static test mainly monitors through high-definition camera. However, for the interference monitoring of open space, due to the influence of environmental factors such as angle of view and light, it is impossible to accurately determine whether interference occurs. For the interference monitoring of narrow space, high-definition camera equipment cannot be arranged due to space limitation, so it is impossible to directly monitor whether interference occurs. CONTENT OF THE INVENTION

[0004] The present application aims to provide a device for monitoring interference of a static test component to solve or alleviate at least one problem in the background art.

[0005] The technical solution of the present application is: a device for monitoring interference of a static test component, comprising:

[0006] A plurality of strain gauges, which are arranged on a region of the component where interference is likely to occur, are used to collect deformation of the region where interference is likely to occur;

[0007] A collector connected to the plurality of strain gauges is used to convert the deformation collected by the strain gauges into stress;

[0008] A computing device connected to the collector and a warning display device is used to generate a load-stress curve by comparing the stress converted by the collector with the load in the static test, and to determine whether the load-stress curve exceeds a threshold value, and to generate a warning signal when the threshold value is exceeded;

[0009] The warning display device is used to display the load-stress curve in the process of static test, and to give a warning when the warning signal exists.

[0010] Preferably, the strain gauge is a resistance strain gauge.

[0011] Preferably, the computing device comprises a computer and a single-chip microcomputer.

[0012] Preferably, the display alarm device comprises a display and an alarm unit, the alarm unit comprising a combination of one or more of LED lights, a horn or a vibrator.

[0013] The device for monitoring interference of structural members in static test provided by the application can effectively monitor the interference of structural members in static test in real time, can monitor in real time in open space or narrow space, is less affected by environment, and can be widely applied to test fields such as aviation, aerospace, bridges and ships. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions provided by the application, the drawings will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the application.

[0015] Figure 1 The device for monitoring interference of structural members in static test provided by the application is a schematic diagram.

[0016] Figure 2 The relative position schematic diagram of structure A and structure B in the embodiment of the application.

[0017] Figure 3 The relative position schematic diagram of structure A and structure B based on Figure 2 . DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the application clearer, the technical solutions in the embodiments of the application will be described in more detail below with reference to the drawings in the embodiments of the application.

[0019] In order to monitor whether interference occurs in the process of static test, the application provides a device for monitoring interference of structural members in static test.

[0020] As shown in Figure 1 , the device for monitoring interference of structural members in static test provided by the application comprises: a plurality of strain gauges 11, a collector 12, a computing device 13 and a display alarm device 14. The plurality of strain gauges 11 are connected to the computing device 13 through the collector 12, and the computing device 13 is connected to the display alarm device 14.

[0021] The strain gauge 11 is installed on the surface of the structural component that may interfere, and it serves as a sensing element to convert the deformation of the structural component surface into a relative change in resistance. The data acquisition unit 12 is used to convert the relative change in resistance into a change in voltage or current, and after amplification and filtering, obtains the strain value of the corresponding structural component surface, and sends the strain value to the computing device 13. The computing device 13 generates a load-strain curve based on the strain value and the test load, and determines whether the load-strain curve meets the interference requirements. When the interference requirements are met, an alarm signal is generated and sent. The display alarm device 14 receives the load-strain curve and / or alarm signal generated by the computing device 13, displays the load-strain curve in real time, and issues an alarm when an alarm signal is present.

[0022] In this application, strain gauge 11 is a resistive strain gauge that is sensitive to load changes.

[0023] In this application, the computing device 13 may be, for example, a computer, a microcontroller, etc., and the computing device may typically include a processor, memory, etc.

[0024] In this application, the display alarm device 14 may be, for example, a display, including but not limited to a liquid crystal display (LCD), an organic light-emitting diode (OLED) display, or a digital light processing (DLP) display. Furthermore, the display alarm device 14 may also include an alarm unit, which may be an LED light, a speaker, a vibrator, or the like.

[0025] like Figure 2 and Figure 3 The diagram shows a static test state of the first structural member 21 and the second structural member 22 in an embodiment of this application. To monitor whether the deformation of the first structural member 21 under load F will interfere with the second structural member 22, three strain gauges 11A-11C are arranged in the area where the second structural member 22 may interfere, according to the site environment. The three strain gauges 11A-11C are arranged along the edge of the second structural member 22. During the static test, the load-strain curves of the three strain gauges 11A-11C are measured and monitored. The calculation device 13 determines whether the load-strain curve has changed. If it changes and exceeds the set threshold, it is determined that the first structural member 21 and the second structural member 22 have interfered, and an alarm is issued; otherwise, it is determined that there is no interference. For example, when the load-strain curve monitored by strain gauge 11B issues an alarm, it indicates that interference has occurred at strain gauge 11B.

[0026] The device provided in this application for monitoring interference of structural components in static tests can effectively monitor the interference of structural components in real time during static tests. It can be monitored in real time in both open and narrow spaces, is less affected by the environment, and can be widely used in aviation, aerospace, bridge, ship and other testing fields.

[0027] The above description is only specific embodiments of the present application, but the protection scope of the present application is not limited thereto, any changes or replacements within the technical scope disclosed by the present application can be easily thought by those skilled in the art, and should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An apparatus for monitoring interference of a structural member under static test, characterized by, The application relates to a static load test device and method. The application comprises: a plurality of strain gauges arranged on a structure in a possible interference area for collecting deformation of the possible interference area; a collector connected with the plurality of strain gauges for converting the deformation collected by the strain gauges into stress; a computing device connected with the collector and a display alarm device for generating a load-stress curve by converting the stress converted by the collector and the load in the static load test, and judging whether the load-stress curve exceeds a threshold value, and generating an alarm signal when the threshold value is exceeded; 2. The apparatus for monitoring the interference of a structure under static test according to claim 1, characterized in that, a display alarm device for displaying the load-stress curve in the static load test process and alarming when the alarm signal exists.

3. The apparatus for monitoring the interference of a structure under static test according to claim 1, characterized in that, The strain gauge is a resistance strain gauge.

4. The apparatus for monitoring the interference of a structure under static test according to claim 1, characterized in that, The computing device comprises a computer and a single-chip microcomputer. The display alarm device comprises a display and an alarm unit, and the alarm unit comprises a combination of one or more of LED lamps, loudspeakers or vibrators.

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