CN114323636A - Monitoring method and device for gear fatigue test, electronic equipment and storage medium - Google Patents
Monitoring method and device for gear fatigue test, electronic equipment and storage medium Download PDFInfo
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Abstract
The application provides a monitoring method and device for a gear fatigue test, electronic equipment and a storage medium. The method comprises the following steps: analyzing and determining a monitoring area of the gear to be tested, and calculating the size of the monitoring area; constructing a field range of the monitoring device based on the size of the monitoring area; constructing a visual field distance of the monitoring equipment based on the visual field range; and acquiring fatigue test image data of the gear to be tested according to the size, the field range and the visual field distance of the monitoring area so as to acquire the appearance information of the gear to be tested. The gear to be tested is monitored by using monitoring equipment based on the optical imaging principle, detection technicians can visually acquire the shape information of the surface of the gear to be tested at each moment in the testing process under the conditions of no shutdown and no disassembly and assembly of the gear to be tested, the purpose of monitoring fatigue characteristics and the testing process is achieved, the testing time can be greatly shortened, and the efficiency of a fatigue test is remarkably improved.
Description
Technical Field
The application relates to the technical field of gear fatigue strength testing, in particular to a monitoring method and device for a gear fatigue test, electronic equipment and a storage medium.
Background
The gear is used as an important mechanical transmission component, and is very easy to generate fatigue failure under the action of complex alternating periodic or aperiodic cyclic load. In order to ensure safe and stable operation of a gear transmission system and reduce potential risks brought by fatigue damage to mechanical equipment, a gear part is generally required to be subjected to a fatigue test, fatigue performance of the gear part under the conditions of specific materials, processing techniques, structural parameters, operating conditions, test environments and the like is explored, and theoretical guidance is provided for processes of design, checking, use, maintenance, optimization and improvement of a transmission component.
At present, for monitoring the gear fatigue test process, a mode of manual inspection by stopping machine at intervals is adopted, and the problem of low test efficiency exists.
Disclosure of Invention
An object of the embodiment of the application is to provide a monitoring method and device for a gear fatigue test, an electronic device and a storage medium, so as to solve the problem of low monitoring efficiency of the gear fatigue test in the prior art.
In a first aspect, an embodiment of the present application provides a method for monitoring a gear fatigue test, including: analyzing and determining a monitoring area of the gear to be tested, and calculating the size of the monitoring area; constructing a field range of the monitoring device based on the size of the monitoring area; constructing a field of view distance of the monitoring device based on the field of view range; and acquiring fatigue test image data of the gear to be tested according to the size of the monitoring area, the field range and the field distance so as to acquire the appearance information of the gear to be tested.
In the process of the realization, the gear to be tested is monitored by using monitoring equipment based on the optical imaging principle, detection technicians can intuitively acquire the appearance information of the surface of the gear to be tested at each moment in the test process under the conditions of no shutdown and no disassembly and assembly of the gear to be tested, the purpose of monitoring fatigue characteristics and the test process is achieved, the test time can be greatly shortened, and the efficiency of the fatigue test is remarkably improved.
In some embodiments, the analyzing determines a monitoring area for the gear under test, including: under the condition that the gear to be tested is in a single gear tooth pulse loading fatigue test, acquiring a complete area of loaded gear teeth of the gear to be tested as a monitoring area; and under the condition that the gear to be tested is in a pulse loading fatigue test of a plurality of gear teeth, acquiring the complete area of loaded gear teeth of the gear to be tested and the complete area of gear teeth among the loaded gear teeth, or acquiring the complete areas of all the gear teeth of the gear to be tested as a monitoring area.
In some embodiments, the analyzing determines a monitoring area for the gear under test, including: and under the condition that the gear to be tested is in a load running fatigue test, acquiring a complete gear tooth area of a meshing gear tooth pair of the meshing gear pair to be tested, or acquiring a complete gear tooth area of all gear teeth of a single gear to be tested, or acquiring a complete gear tooth area of all gear teeth of the meshing gear pair to be tested as a monitoring area.
In the implementation process, the shape information of the complete monitoring area of the gear to be tested is directly obtained, so that the investment cost can be reduced, the economy and the efficiency of the fatigue test of the gear to be tested are improved, and meanwhile, the influence of the experience and subjective judgment of detection technicians on the stability and consistency of the detection result is weakened to a certain extent.
In some embodiments, said constructing a field of view range of a monitoring device based on a size of said monitoring area comprises: acquiring a circumscribed rectangle of the monitoring area; and adjusting the size of the circumscribed rectangle based on the resolution of the circumscribed rectangle and the monitoring equipment to construct the field range of the monitoring equipment.
In the implementation process, the circumscribed rectangle of the monitoring area is obtained in advance, and the size of the circumscribed rectangle is adjusted according to the resolution of the monitoring equipment, so that the appearance of the gear to be tested, which is acquired by the monitoring equipment, is in the clearest imaging state and the best observation visual field.
In some embodiments, said constructing a distance of a field of view of said monitoring device based on said range of fields of view comprises: acquiring the focal length of the monitoring equipment; acquiring the transverse size and the longitudinal size of the field range; acquiring the transverse dimension and the longitudinal dimension of a photosensitive element of the monitoring equipment; and constructing the visual field distance of the monitoring device according to the focal length, the transverse dimension and the longitudinal dimension of the visual field range, and the transverse dimension and the longitudinal dimension of a photosensitive element of the monitoring device.
In the implementation process, the visual field distance of the monitoring equipment is determined according to the focal length, the transverse size and the longitudinal size of the visual field range, and the transverse size and the longitudinal size of a photosensitive element of the monitoring equipment, so that the acquired appearance of the gear to be tested is in the clearest imaging state and the best observation visual field.
In some embodiments, the acquiring the lateral dimension and the longitudinal dimension of the photosensitive element of the monitoring device includes: acquiring the diagonal size of the photosensitive element; acquiring the number of transverse pixels and the number of longitudinal pixels of the resolution of the monitoring equipment; and acquiring the transverse size and the longitudinal size of the photosensitive element of the monitoring equipment based on the diagonal size of the photosensitive element, the transverse pixel point number and the longitudinal pixel point number of the resolution of the monitoring equipment.
In the implementation process, reasonable optical imaging parameter calculation is carried out according to the diagonal size of the photosensitive element, the number of transverse pixels and the number of longitudinal pixels of the resolution of the monitoring equipment, so that the most reasonable observation visual field is obtained, the acquired appearance of the gear to be tested reaches the clearest imaging state, and the accuracy of the monitoring result is ensured.
In some embodiments, the distance of the field of view of the monitoring device, the focal length of the monitoring device, the lateral and longitudinal dimensions of the field of view, the lateral and longitudinal dimensions of the photosensitive element of the monitoring device, the number of lateral and longitudinal pixel points of the resolution of the monitoring device, and the diagonal dimension of the photosensitive element are related by:
in the formula, f represents the focal length of the monitoring device, fov (H) and fov (V) represent the transverse dimension and the longitudinal dimension of the field of view range, respectively, sensor (H) and sensor (V) represent the transverse dimension and the longitudinal dimension of the photosensitive element of the monitoring device, respectively, H and V represent the number of transverse pixels and the number of longitudinal pixels of the resolution of the monitoring device, L represents the diagonal dimension of the photosensitive element, and SD represents the field of view distance of the monitoring device.
In a second aspect, an embodiment of the present application provides a monitoring device for a gear fatigue test, including: the processing unit is used for analyzing and determining a monitoring area of the gear to be tested and calculating the size of the monitoring area; the first construction unit is used for constructing a view field range of the monitoring equipment based on the size of the monitoring area; the second construction unit is used for constructing the visual field distance of the monitoring equipment based on the visual field range; and the acquisition unit is used for acquiring fatigue test image data of the gear to be tested according to the size of the monitoring area, the field range and the field distance so as to acquire the appearance information of the gear to be tested.
In the process of the realization, the gear to be tested is monitored by using monitoring equipment based on the optical imaging principle, detection technicians can intuitively acquire the appearance information of the surface of the gear to be tested at each moment in the test process under the conditions of no shutdown and no disassembly and assembly of the gear to be tested, the test time consumption can be greatly shortened, and the efficiency of a fatigue test is remarkably improved.
In a third aspect, an electronic device provided in an embodiment of the present application includes: memory, a processor and a computer program stored in the memory and executable on the processor, the processor implementing the steps of the method according to any of the first aspect when executing the computer program.
In a fourth aspect, a storage medium is provided in an embodiment of the present application, where the storage medium has instructions stored thereon, and when the instructions are executed on a computer, the instructions cause the computer to perform the method according to any one of the first aspect.
In a fifth aspect, embodiments of the present application provide a computer program product, which when run on a computer, causes the computer to perform the method according to any one of the first aspect.
Additional features and advantages of the present application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the embodiments of the present application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
FIG. 1 is a schematic flow chart of a monitoring method for a gear fatigue test provided in an embodiment of the present application;
FIG. 2 is a schematic layout of a monitoring device for a gear tooth pulsating loading fatigue test according to a monitoring method for a gear fatigue test provided by an embodiment of the present application;
FIG. 3 is a schematic diagram of an arrangement of a monitoring device for a gear rack load running fatigue test according to an embodiment of the present disclosure;
FIG. 4 is a schematic structural diagram of a monitoring device for a gear fatigue test provided in an embodiment of the present application;
fig. 5 is a schematic structural diagram of an electronic device for a gear fatigue test provided in an embodiment of the present application.
Reference numerals
100. A processing unit; 200. a first building element; 300. a second building element; 400. a collection unit; 510. a processor; 520. a communication interface; 530. a memory; 540. a communication bus; 600. monitoring equipment; 700. a gear to be tested.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
The embodiment of the application provides a monitoring method and device for a gear fatigue test, electronic equipment and a storage medium, which can be applied to the gear fatigue performance test under the conditions of specific materials, processing technology, structural parameters, operating conditions, test environment and the like, and provide theoretical guidance for the processes of design, check, use, maintenance, optimization and improvement and the like of a transmission component.
According to different fatigue characteristics, the fatigue performance of the gear 700 to be tested can be researched from the aspects of contact fatigue strength and bending fatigue strength, and at present, the contact fatigue strength and the bending fatigue strength of the gear 700 to be tested are analyzed and determined mainly by adopting a simulation analysis mode, a sample test mode or a mode of combining the two modes.
The inventor finds that when a sample test of the gear 700 to be tested is carried out, a special fixture is needed to fix the sample of the gear 700 to be tested on a gear fatigue testing machine to carry out a rack load operation fatigue test or a gear tooth pulsation loading fatigue test so as to measure the fatigue strength of the gear 700 to be tested, and for monitoring the whole test process, a mode of stopping the machine at intervals is adopted, a professional technician carries out disassembly and assembly on the sample of the gear 700 to be tested from the fatigue testing machine, and carries out fatigue damage analysis on the gear 700 to be tested by means of experience through a visual inspection mode or by means of instruments such as an optical microscope, a metallographic microscope, a scanning electron microscope and the like; or a contact sensor such as a strain gauge is used and is stuck to a part of the gear 700 to be tested, which is easy to generate fatigue damage, and data information such as vibration and deformation in the test process is collected and analyzed, so that fatigue characteristic information such as damage type, damage part and damage degree is determined.
If the gear fatigue test monitoring is carried out in the mode, the machine is stopped at intervals in the test process, the problems of low test efficiency, long test time consumption, high cost and the like exist in visual inspection after the gear to be tested 700 is manually disassembled and assembled from the fatigue testing machine, and meanwhile, the detection result is influenced by the experience and subjective judgment of detection technicians, and the problems of poor stability and poor consistency exist; by means of instruments such as an optical microscope, a metallographic microscope, a scanning electron microscope and the like, fatigue damage analysis is carried out on the disassembled and assembled gear 700 to be tested, and although the problems of poor stability and consistency of detection results can be solved to a certain extent, the problems of high test cost and low efficiency still exist due to the fact that professional detection equipment is required; the method is characterized in that a contact sensor such as a strain gauge is used and is adhered to a part of a gear 700 to be tested, which is easy to generate fatigue damage, so as to collect and analyze data information such as vibration and deformation in the test process, although the data information in the fatigue test process of the gear 700 to be tested can be effectively collected and monitored under the condition of not stopping and not disassembling a sample of the gear 700 to be tested, factors such as the tooth shape, structural parameters and the size of the strain gauge of the gear 700 to be tested can cause great limitation on the arrangement number, adhesion position and arrangement mode of the strain gauge, so that only fatigue damage information of a specific part and direction can be collected in the test process, the overall and all-directional data information of the gear 700 to be tested cannot be comprehensively monitored, and certain limitation exists.
In view of this, as shown in fig. 1, fig. 1 is a schematic flow chart of a monitoring method for a gear fatigue test provided in an embodiment of the present application; in a first aspect, an embodiment of the present application provides a method for monitoring a gear fatigue test, which can collect global fatigue characteristic information of a gear 700 to be tested in real time without contacting the gear 700 to be tested and without shutdown, and perform effective fatigue damage monitoring and analysis, and the method includes:
s100: analyzing and determining a monitoring area of the gear 700 to be tested, and calculating the size of the monitoring area;
as shown in fig. 2, the analysis determines a monitoring area of the gear under test 700, including: under the condition that the gear 700 to be tested is in a single gear tooth pulse loading fatigue test, acquiring a complete area of loaded gear teeth of the gear 700 to be tested as a monitoring area.
For example, the monitoring area of the gear to be tested 700 obtained under the scheme includes a portion from the tooth top to the tooth bottom of the loaded gear of the gear to be tested 700, and the scheme of the bending fatigue strength test of the gear to be tested 700 may adopt the test method in GB/T14230 and 2021, which is not repeated herein.
In the implementation process, the complete monitoring area of the gear 700 to be tested is directly obtained, so that the investment cost can be reduced, the economy and the efficiency of the fatigue test of the gear 700 to be tested are improved, and meanwhile, the influence of experience and subjective judgment of detection technicians on the stability and consistency of the detection result is weakened to a certain extent.
As further shown in fig. 2, the analysis determines a monitoring area for the gear under test 700, including: under the condition that the gear 700 to be tested is in a pulse loading fatigue test of a plurality of gear teeth, acquiring a complete area of loaded gear teeth of the gear 700 to be tested and a complete area of gear teeth among the loaded gear teeth, or acquiring a complete area of all gear teeth of the gear 700 to be tested as a monitoring area.
In the pulsating loading fatigue test, when the gear to be tested 700 is loaded in a double tooth, the monitoring area is a complete area of two gear teeth of the gear to be tested 700 which are correspondingly loaded and a complete area of the gear teeth between the two loaded gear teeth of the gear to be tested 700, and the complete area is a part from the tooth top to the tooth bottom of the gear teeth; when the gear to be tested 700 is loaded with more than two gear teeth, the monitoring area may be a complete area of corresponding loaded gear teeth of the gear to be tested 700 and a gear tooth portion between the loaded gear teeth of the gear to be tested 700, or the complete area of all the gear teeth of the gear to be tested 700 may be set as the monitoring area.
As shown in fig. 3, the analysis determines a monitoring area of the gear under test 700, including: under the condition that the gear 700 to be tested is in a rack load operation fatigue test, acquiring a complete gear tooth area of a meshing gear tooth pair of the meshing gear pair to be tested, or acquiring a complete gear tooth area of all gear teeth of a single gear 700 to be tested, or acquiring a complete gear tooth area of all gear teeth of the meshing gear pair to be tested as a monitoring area.
Illustratively, when the bench load operation fatigue test is carried out, different monitoring areas can be flexibly set according to different monitoring purposes, the investment cost can be reduced by directly acquiring the complete monitoring area of the gear 700 to be tested, the economy of the fatigue performance test of the gear 700 to be tested is improved, and meanwhile, the influence of experience and subjective judgment of detection technicians on the stability and consistency of a detection result is weakened to a certain extent.
It should be noted that different monitoring areas are flexibly set according to different monitoring purposes, for example, when the to-be-tested meshing gear pair is two to-be-tested gears 700 to be meshed and a rack load running fatigue test is performed, the complete areas of the gear teeth of the meshing gear teeth pair of the two to-be-tested gears 700 may be used as the monitoring areas, the complete area of all the gear teeth of one of the to-be-tested gears 700 may also be used as the monitoring areas, and the complete areas of all the gear teeth of the two to-be-tested gears 700 may also be used as the monitoring areas; similarly, when the meshing gear pair to be tested is used for meshing more than two gears 700 to be tested to perform the bench load operation fatigue test, the setting of the monitoring area can refer to the setting mode of the monitoring area where the two gears 700 to be tested are meshed to perform the bench load operation fatigue test, which is not described in detail herein.
S200: constructing a field of view range for the monitoring device 600 based on the size of the monitoring area;
in some embodiments, constructing the field of view range of the monitoring device 600 based on the size of the monitoring area includes: acquiring a circumscribed rectangle of the monitoring area; based on the circumscribed rectangle and the resolution of the monitoring device 600, the size of the circumscribed rectangle is adjusted so that the aspect ratio of the circumscribed rectangle is equal to the ratio of the transverse size to the longitudinal size of the photosensitive element of the monitoring device 600, so as to construct the field of view range of the monitoring device 600, wherein the field of view range of the monitoring device 600 is the area of the adjusted circumscribed rectangle.
For example, the circumscribed rectangle of the monitoring area may be obtained according to different test modes, for example, the circumscribed rectangle corresponds to the circumscribed rectangle of the complete area of a single loaded gear tooth of the gear to be tested 700 under the monitoring condition that the gear to be tested 700 is in the gear tooth pulsating loading fatigue test with a single loaded gear tooth.
In the implementation process, the circumscribed rectangle of the monitoring area is obtained in advance, and the size of the circumscribed rectangle is adjusted according to the resolution of the monitoring device 600, so that the appearance of the gear 700 to be tested, which is acquired by the monitoring device 600 (the monitoring device 600 may be a photographic device such as an industrial camera, a digital camera, a mobile phone, a video camera, etc.), is in the clearest imaging state and the best observation field.
S300: constructing a field of view distance for the monitoring device 600 based on the field of view range;
in some embodiments, said constructing a distance of a field of view of said monitoring device 600 based on said range of fields of view comprises: acquiring the focal length of the monitoring device 600; acquiring the transverse size and the longitudinal size of the field range; acquiring the transverse dimension and the longitudinal dimension of a photosensitive element of the monitoring device 600; and constructing the visual field distance of the monitoring device 600 according to the focal length, the transverse dimension and the longitudinal dimension of the visual field range, and the transverse dimension and the longitudinal dimension of a photosensitive element of the monitoring device 600, so that the acquired appearance of the gear 700 to be tested is in the clearest imaging state and the best observation visual field.
Further, the acquiring the transverse dimension and the longitudinal dimension of the photosensitive element of the monitoring apparatus 600 includes: acquiring the diagonal dimension of the photosensitive element of the monitoring device 600; acquiring the number of horizontal pixels and the number of vertical pixels of the resolution of the monitoring device 600; the lateral size and the longitudinal size of the photosensitive element of the monitoring apparatus 600 are obtained based on the diagonal size of the photosensitive element, the number of the lateral pixel dots and the number of the longitudinal pixel dots of the resolution of the monitoring apparatus 600.
In the implementation process, reasonable optical imaging parameter calculation is performed according to the diagonal size of the photosensitive element of the monitoring device 600, the number of the transverse pixels and the number of the longitudinal pixels of the resolution of the monitoring device 600, so that the most reasonable observation field of view is obtained, the collected to-be-tested gear 700 shape achieves the clearest imaging state, and the accuracy of the monitoring result is ensured.
In some embodiments, the distance of the field of view of the monitoring device 600, the focal length of the monitoring device 600, the lateral and longitudinal dimensions of the field of view, the lateral and longitudinal dimensions of the photosensitive elements of the monitoring device 600, the number of lateral and longitudinal pixel points of the resolution of the monitoring device 600, and the diagonal dimensions of the photosensitive elements of the monitoring device 600 are in a relationship:
where f denotes a focal length of the monitoring device, fov (H) and fov (V) denote a transverse dimension and a longitudinal dimension of the field of view range, respectively, sensor (H) and sensor (V) denote a transverse dimension and a longitudinal dimension of the photosensitive element of the monitoring device 600, H and V denote a transverse pixel count and a longitudinal pixel count of the resolution of the monitoring device 600, respectively, L denotes a diagonal dimension of the photosensitive element of the detection device 600, and sd (sight distance) denotes a field distance of the monitoring device 600.
S400: and acquiring fatigue test image data of the gear 700 to be tested according to the size of the monitoring area, the field range and the field distance so as to acquire the appearance information of the gear 700 to be tested.
Illustratively, the gear 700 to be tested is fixed on a fatigue testing machine through a special fixture, working conditions are set, a gear tooth pulse loading fatigue test or a rack load running fatigue test is carried out to determine the fatigue strength of the gear 700 to be tested, different monitoring areas can be set according to different monitoring purposes, and the field range of the monitoring equipment 600 and the field distance of the monitoring equipment 600 are reasonably adjusted, so that the appearance of the gear 700 to be tested, which is acquired by the monitoring equipment 600, is in the clearest imaging state and the best observation field.
It should be noted that parameters such as an angle, an aperture, a focal length, and an exposure time of the monitoring device 600 are reasonably adjusted, so that the appearance of the gear 700 to be tested, which is acquired by the monitoring device 600, is in a clearest imaging state and an optimal observation field; as shown in fig. 2 to 3, when the monitoring device 600 is arranged according to the calculated visual field distance, the angle between the optical axis of the monitoring device 600 and the end surface of the gear 700 to be tested is ensured to be 90 ° as much as possible, after the visual field distance and the angle are determined, the focal length of the monitoring device 600 is adjusted, so that the image formed by the end surface of the gear 700 to be tested falls on the focal plane of the monitoring device 600, and the clearest imaging state is achieved, and similarly, the size of the aperture of the monitoring device 600 is reasonably adjusted, and the light quantity entering the photosensitive surface in the monitoring device 600 is controlled; according to the brightness of the environment, the exposure time of the monitoring device 600 is reasonably adjusted, and the time interval from the opening to the closing of the shutter is controlled to obtain the optimal acquired image.
Specifically, according to the condition of the test environment, the type, the number and the arrangement direction of the light sources can be flexibly selected, the monitored area of the gear 700 to be tested is supplemented with light, and the acquired image of the monitored area of the gear 700 to be tested is ensured to have the best definition; when the test environment is dark, a light source is added properly to supplement light for the monitoring area of the gear 700 to be tested, so that the definition of the collected image is improved; in consideration of the problem of metal reflection, a warm light source can be adopted to inhibit the influence of the reflection of the metal surface of the gear 700 to be tested, and meanwhile, the arrangement number and the direction of the light source are required to ensure that the brightness of the monitored area is uniform and consistent so as to obtain a high-quality collected image.
In the testing process, according to the measurement and analysis requirements of the fatigue characteristics of the gear, the acquisition frequency of the image is flexibly set (if necessary, a high-precision signal trigger device can be used), the time interval for acquiring the image is adjusted, the overall and omnibearing appearance information of the gear 700 to be tested can be accurately acquired timely and effectively in the whole life process of the gear fatigue test, and the fatigue damage analysis and the tracking and monitoring of the fatigue failure process can be completed by detection technicians.
In the implementation process, the monitoring device 600 is used for monitoring the fatigue test of the gear 700 to be tested based on the optical imaging principle, detection technicians can intuitively acquire the appearance information of the surface of the gear 700 to be tested at each moment in the test process under the conditions of no halt and no disassembly and assembly of the gear 700 to be tested, the purpose of monitoring the fatigue characteristics and the test process is achieved, the test time can be greatly shortened, and the efficiency of the fatigue test is remarkably improved.
As shown in fig. 4, fig. 4 is a block diagram schematically illustrating a structure of a monitoring device for a gear fatigue test according to an embodiment of the present disclosure; in a second aspect, the present application further provides a monitoring device for a gear fatigue test, including: the processing unit 100 is used for analyzing and determining a monitoring area of the gear 700 to be tested and calculating the size of the monitoring area; a first constructing unit 200 for constructing a field of view range of the monitoring device 600 based on the monitoring area; a second constructing unit 300 for constructing a viewing distance of the monitoring apparatus 600 based on the viewing range; the acquisition unit 400 is configured to acquire fatigue test image data of the gear 700 to be tested according to the monitoring area, the field range and the field distance, so as to acquire morphology information of the gear 700 to be tested.
In the implementation process, the monitoring device 600 is used for monitoring the fatigue test of the gear 700 to be tested based on the optical imaging principle, detection technicians can intuitively acquire the appearance information of the surface of the gear 700 to be tested at each moment in the test process under the conditions of no halt and no disassembly and assembly of the gear 700 to be tested, the purpose of monitoring the fatigue characteristics and the test process is achieved, the test time can be greatly shortened, and the efficiency of the fatigue test is remarkably improved.
Fig. 5 shows a schematic structural diagram of an electronic device for a gear fatigue test according to an embodiment of the present application. The device may include a processor 510, a communication interface 520, a memory 530, and at least one communication bus 540. Wherein the communication bus 540 is used for realizing direct connection communication of these components. The communication interface 520 of the device in the embodiment of the present application is used for communicating information or data with other node devices.
The processor 510 may be an integrated circuit chip having signal processing capability; may be a general purpose Processor including, but not limited to, a microprocessor including a Central Processing Unit (CPU), a Network Processor (NP), and the like; but may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present application may be implemented or performed. Or the processor 510 may be any conventional processor or the like.
The Memory 530 may be, but is not limited to, a Random Access Memory (RAM), a Read Only Memory (ROM), a Programmable Read Only Memory (PROM), an Erasable Read Only Memory (EPROM), an electrically Erasable Read Only Memory (EEPROM), and the like. The memory 530 stores computer readable instructions that, when executed by the processor 510, cause the apparatus to perform the steps involved in the method embodiments of fig. 1-3.
Optionally, the electronic device may further include a memory controller, an input output unit.
The memory 530, the memory controller, the processor 510, the peripheral interface, and the input/output unit are electrically connected to each other directly or indirectly, so as to implement data transmission or interaction. For example, these elements may be electrically coupled to each other via one or more communication buses 540. The processor 510 is adapted to execute executable modules stored in the memory 530, such as software functional modules or computer programs comprised by the electronic device.
The input and output unit is used for providing functions including task creation and starting of optional time periods or preset execution time for the task for a user, so that interaction between the user and the server is achieved. The input/output unit may be, but is not limited to, a mouse, a keyboard, and the like.
It will be appreciated that the configuration shown in fig. 5 is merely illustrative and that the electronic device may include more or fewer components than shown in fig. 5 or may have a different configuration than shown in fig. 5. The components shown in fig. 5 may be implemented in hardware, software, or a combination thereof.
The embodiment of the present application further provides a storage medium, where the storage medium stores instructions, and when the instructions run on a computer, the method in the method embodiment is implemented, and details are not repeated here to avoid repetition.
The present application also provides a computer program product which, when run on a computer, causes the computer to perform the method of the method embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The embodiments described above are merely illustrative, and the flowcharts and block diagrams in the figures, for example, illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved and the actual requirements. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, functional modules in the embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (10)
1. A monitoring method for a gear fatigue test is characterized by comprising the following steps:
analyzing and determining a monitoring area of the gear to be tested, and calculating the size of the monitoring area;
constructing a field range of the monitoring device based on the size of the monitoring area;
constructing a field of view distance of the monitoring device based on the field of view range;
and acquiring fatigue test image data of the gear to be tested according to the size of the monitoring area, the field range and the field distance so as to acquire the appearance information of the gear to be tested.
2. The method of claim 1, wherein the analyzing determines a monitoring area for the gear under test, comprising:
under the condition that the gear to be tested is in a single gear tooth pulse loading fatigue test, acquiring a complete area of loaded gear teeth of the gear to be tested as a monitoring area;
and under the condition that the gear to be tested is in a pulse loading fatigue test of a plurality of gear teeth, acquiring the complete area of loaded gear teeth of the gear to be tested and the complete area of gear teeth among the loaded gear teeth, or acquiring the complete areas of all the gear teeth of the gear to be tested as a monitoring area.
3. The method of claim 1, wherein the analyzing determines a monitoring area for the gear under test, comprising:
and under the condition that the gear to be tested is in a load running fatigue test, acquiring a complete gear tooth area of a meshing gear tooth pair of the meshing gear pair to be tested, or acquiring a complete gear tooth area of all gear teeth of a single gear to be tested, or acquiring a complete gear tooth area of all gear teeth of the meshing gear pair to be tested as a monitoring area.
4. The method of claim 1, wherein constructing a field of view range for a monitoring device based on a size of the monitoring area comprises:
acquiring a circumscribed rectangle of the monitoring area;
and adjusting the size of the circumscribed rectangle based on the resolution of the circumscribed rectangle and the monitoring equipment to construct the field range of the monitoring equipment.
5. The method of claim 1, wherein said constructing a distance of a field of view of the monitoring device based on the range of fields of view comprises:
acquiring the focal length of the monitoring equipment;
acquiring the transverse size and the longitudinal size of the field range;
acquiring the transverse dimension and the longitudinal dimension of a photosensitive element of the monitoring equipment;
and constructing the visual field distance of the monitoring device according to the focal length, the transverse dimension and the longitudinal dimension of the visual field range, and the transverse dimension and the longitudinal dimension of a photosensitive element of the monitoring device.
6. The method of claim 5, wherein the obtaining the lateral dimension and the longitudinal dimension of the photosensitive element of the monitoring device comprises:
acquiring the diagonal size of the photosensitive element;
acquiring the number of transverse pixels and the number of longitudinal pixels of the resolution of the monitoring equipment;
and acquiring the transverse size and the longitudinal size of the photosensitive element of the monitoring equipment based on the diagonal size of the photosensitive element, the transverse pixel point number and the longitudinal pixel point number of the resolution of the monitoring equipment.
7. The method of claim 6, wherein the distance of the field of view of the monitoring device, the focal length of the monitoring device, the lateral and longitudinal dimensions of the field of view, the lateral and longitudinal dimensions of the photosensitive elements of the monitoring device, the number of lateral and longitudinal pixel points of the resolution of the monitoring device, and the diagonal dimensions of the photosensitive elements are related by:
in the formula, f represents the focal length of the monitoring device, fov (H) and fov (V) represent the transverse dimension and the longitudinal dimension of the field of view range, respectively, sensor (H) and sensor (V) represent the transverse dimension and the longitudinal dimension of the photosensitive element of the monitoring device, respectively, H and V represent the number of transverse pixels and the number of longitudinal pixels of the resolution of the monitoring device, L represents the diagonal dimension of the photosensitive element, and SD represents the field of view distance of the monitoring device.
8. A monitoring device for a gear fatigue test is characterized by comprising:
the processing unit is used for analyzing and determining a monitoring area of the gear to be tested and calculating the size of the monitoring area;
the first construction unit is used for constructing a view field range of the monitoring equipment based on the size of the monitoring area;
the second construction unit is used for constructing the visual field distance of the monitoring equipment based on the visual field range;
and the acquisition unit is used for acquiring fatigue test image data of the gear to be tested according to the size of the monitoring area, the field range and the field distance so as to acquire the appearance information of the gear to be tested.
9. An electronic device, comprising: memory, a processor and a computer program stored in the memory and executable on the processor, the processor implementing the steps of the method of monitoring a gear fatigue test according to any one of claims 1-7 when executing the computer program.
10. A storage medium having stored thereon instructions which, when run on a computer, cause the computer to perform the method of monitoring a gear fatigue test of any one of claims 1-7.
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