Visual light measuring device parameter adjustment practical training system and use method thereof
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINESE PEOPLES LIBERATION ARMY STRATEGIC SUPPORT FORCE AEROSPACE ENG UNIV NON-COMMISSIONED OFFICER SCHOOL
- Filing Date
- 2024-04-17
- Publication Date
- 2026-06-26
Smart Images
Figure CN118116258B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of training on parameter adjustment of optical measurement equipment, and in particular to a visual training system for adjusting parameters of optical measurement equipment and its usage method. Background Technology
[0002] Optical measurement equipment is primarily used in aerospace telemetry and control missions to measure the motion, geometric, and physical characteristics of space targets. Because this equipment needs to track and measure parameters of high-speed moving targets such as aircraft, rockets, and reentry capsules under varying environments, it requires adjustments to brightness, focus, and magnification based on different lighting conditions, target sizes, and operating distances. This necessitates a comprehensive brightness, focus, and magnification system. However, as large, precision measuring devices, optical measurement equipment is expensive. Furthermore, the optical components, as part of the optical system, are completely encapsulated within the optical lens barrel and are invisible, making it difficult to intuitively understand the theoretical knowledge involved.
[0003] Besides the fact that the components inside the optical tube are not visible, another reason why it is inconvenient for learning is that there are multiple ways to adjust the brightness, focus, and zoom of optical measurement equipment. This makes it difficult for trainees to compare, summarize, and understand the various methods. Furthermore, while high-precision stepper motors typically drive the movement of optical components in brightness, focus, and zoom systems, actual equipment only allows viewing the adjustment effect and cannot precisely control the displacement of the optical components. This prevents trainees from learning and verifying the relationship between the displacement of optical components and the brightness, focus, and zoom parameters, hindering their understanding and mastery of the principles of brightness, focus, and zoom in aerospace optical measurement equipment. Therefore, developing a visualized training system for adjusting the parameters of optical measurement equipment is particularly important for teaching and training. Summary of the Invention
[0004] The purpose of this invention is to provide a visual training system for adjusting the parameters of optical measurement equipment and its usage method, which helps trainees understand and master the principles of dimming, focusing, and zooming of aerospace optical measurement equipment.
[0005] To achieve the above objectives, the present invention provides the following solution:
[0006] On the one hand, the present invention provides a visual training system for adjusting parameters of optical measurement equipment, including: a mechanical structure mounting platform and an objective lens group, a parameter adjustment execution module, a parameter adjustment control module, a color camera, and a human-computer interaction device sequentially mounted on the mechanical structure mounting platform; the human-computer interaction device is equipped with teaching and training software.
[0007] The teaching and training software is used to provide students with a human-computer interaction interface. Through the human-computer interaction interface, the software obtains the parameter adjustment requirements input by the students, generates parameter adjustment instructions based on the parameter adjustment requirements, and sends the parameter adjustment instructions to the parameter adjustment control module.
[0008] The parameter adjustment control module is used to control the parameter adjustment execution module to change the imaging parameters of the optical measurement equipment according to the parameter adjustment command; the imaging parameters of the optical measurement equipment include at least one of imaging luminous flux, imaging depth of focus and imaging focal length.
[0009] A color camera, used in conjunction with an objective lens group, is used to generate images based on the changed imaging parameters of the optical metering equipment. The imaging results are then displayed to trainees through teaching and training software, enabling them to understand the impact of changing the imaging parameters of the optical metering equipment on the imaging results.
[0010] Optionally, the parameter adjustment execution module includes one or more of the following: dimming module, focusing module, and zoom module.
[0011] The dimming module includes an imaging light flux adjustment module and a dimming stepper motor assembly, which includes at least one stepper motor.
[0012] The focusing module includes an imaging depth-of-focus adjustment module and a focusing stepper motor assembly, which includes at least one stepper motor.
[0013] The zoom module includes an imaging focal length adjustment module and a zoom stepper motor assembly, which includes at least one stepper motor.
[0014] The dimming stepper motor group, the focusing stepper motor group, and the magnification stepper motor group are all electrically connected to the parameter adjustment and control module.
[0015] Optionally, the parameter adjustment requirements include the motor displacement vector and the operating direction of each stepper motor; the motor displacement vector includes the linear displacement distance of each stepper motor or the displacement angle of each stepper motor; the parameter adjustment requirements are the data obtained by the trainee based on the adjustment requirements of the optical measurement equipment; the parameter adjustment instructions include the number of control pulses for each stepper motor and the energizing phase sequence of each stepper motor.
[0016] Optionally, the imaging light flux adjustment module includes one or more of the following: an aperture, a filter wheel, and a neutral density variable disk assembly.
[0017] When the imaging light flux adjustment module includes an aperture, the dimming stepper motor group includes an aperture stepper motor; the aperture stepper motor is electrically connected to the parameter adjustment control module, and the aperture stepper motor is used to rotate the aperture according to the number of control pulses of the stepper motor and the energizing phase sequence of the stepper motor.
[0018] When the imaging light flux adjustment module includes a filter wheel, the dimming stepper motor assembly includes a filter wheel stepper motor; the filter wheel stepper motor is electrically connected to the parameter adjustment control module, and the filter wheel stepper motor is used to rotate the filter wheel according to the number of control pulses of the stepper motor and the energizing phase sequence of the stepper motor.
[0019] When the imaging light flux adjustment module includes a neutral density disk group, the dimming stepper motor group includes a first neutral density disk stepper motor and a second neutral density disk stepper motor; the neutral density disk group includes a first neutral density disk and a second neutral density disk; the first neutral density disk stepper motor is electrically connected to the parameter adjustment control module, and the first neutral density disk stepper motor is used to rotate the first neutral density disk according to the number of control pulses of the stepper motor and the energizing phase sequence of the stepper motor; the second neutral density disk stepper motor is electrically connected to the parameter adjustment control module, and the second neutral density disk stepper motor is used to rotate the second neutral density disk according to the number of control pulses of the stepper motor and the energizing phase sequence of the stepper motor.
[0020] Optionally, the imaging focal length adjustment module includes a front fixed group, a zoom group, a compensation group, and a rear fixed group sequentially arranged on the mechanical structure mounting platform; the zoom stepper motor group includes a zoom group stepper motor and a compensation group stepper motor.
[0021] The variable magnification stepper motor is electrically connected to the parameter adjustment control module. The variable magnification stepper motor is used to move the variable magnification group according to the number of control pulses and the energizing phase sequence of the stepper motor. The compensation group stepper motor is also electrically connected to the parameter adjustment control module. The compensation group stepper motor is used to move the compensation group according to the number of control pulses and the energizing phase sequence of the stepper motor.
[0022] Optionally, the imaging depth-of-focus adjustment module includes a focusing lens group; the focusing stepper motor group includes a focusing lens group stepper motor; the focusing lens group stepper motor is used to move the focusing lens group according to the number of control pulses of the stepper motor and the energizing phase sequence of the stepper motor.
[0023] On the other hand, the present invention provides a method for using a visual optical measurement equipment parameter adjustment training system, applied to a visual optical measurement equipment parameter adjustment training system as described above, the method comprising the following steps:
[0024] Obtain the parameter adjustment requirements input by the students.
[0025] Based on the parameter adjustment requirements input by the student, a parameter adjustment instruction is generated.
[0026] According to the parameter adjustment command, the parameter adjustment execution module is controlled to change the imaging parameters of the optical measurement device; the imaging parameters of the optical measurement device include at least one of imaging luminous flux, imaging depth of focus and imaging focal length.
[0027] Imaging is performed based on the modified imaging parameters of the optical measurement equipment to obtain the imaging results.
[0028] The imaging results are shown to the trainees so that they can understand the impact of changing the imaging parameters of the optical measurement equipment on the imaging results.
[0029] Optionally, the parameter adjustment requirements include the motor displacement vector and the operating direction of each stepper motor; the motor displacement vector includes the linear displacement distance of each stepper motor or the displacement angle of each stepper motor; the parameter adjustment requirements are data obtained by the trainee based on the adjustment requirements of the optical measurement equipment.
[0030] Optionally, the parameter adjustment command includes the number of control pulses for each stepper motor and the energizing phase sequence of each stepper motor; based on the parameter adjustment requirements input by the student, a parameter adjustment command is generated, specifically including:
[0031] The number of control pulses for each stepper motor is determined based on the motor displacement vector and the step accuracy of each stepper motor.
[0032] Determine the energizing phase sequence of each stepper motor based on its rotation direction.
[0033] According to specific embodiments provided by the present invention, the present invention discloses the following technical effects:
[0034] This invention provides a visualized training system for adjusting optical measurement equipment parameters and its usage method. The system includes an objective lens assembly, a parameter adjustment execution module, a parameter adjustment control module, a color camera, and a human-computer interaction device. Each component is sequentially mounted on a mechanical structure platform. The system receives parameter adjustment requirements input by the trainee through the human-computer interface and generates parameter adjustment commands based on these requirements. The parameter adjustment execution module then controls the parameter adjustment execution module to change the imaging parameters of the optical measurement equipment. After imaging based on the changed imaging parameters, the results are displayed to the trainee through the human-computer interface. This allows trainees to better study and understand the impact and principles of adjusting the imaging parameters of the optical measurement equipment on the final image. Based on the teaching needs of optical measurement equipment parameter adjustment, this invention designs a visualized training system for adjusting optical measurement equipment parameters. It has the function of accurately executing parameter adjustment requests, helping trainees learn and verify the relationship between the displacement of various optical elements in the optical measurement equipment system and the imaging luminous flux, imaging depth of focus, and imaging focal length, thereby better understanding and mastering the principles of parameter adjustment for aerospace optical measurement equipment. Attached Figure Description
[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0036] Figure 1 This is a structural block diagram of a visual optical measurement equipment parameter adjustment training system provided in Embodiment 1 of the present invention;
[0037] Figure 2 This is a schematic diagram of the overall structure of a visual optical measurement equipment parameter adjustment training system provided in Embodiment 1 of the present invention;
[0038] Figure 3 This is a schematic diagram illustrating the design requirements for the processing of a neutral density disk in a visual training system for adjusting parameters of an optical measurement device, as provided in Embodiment 1 of the present invention.
[0039] Figure 4 This is a schematic diagram of the imaging focal length adjustment module in a visual optical measurement equipment parameter adjustment training system provided in Embodiment 1 of the present invention;
[0040] Figure 5 This is a schematic diagram of depth of field and focal depth in a visual training system for adjusting parameters of an optical measurement device provided in Embodiment 1 of the present invention.
[0041] Figure 6 This is a flowchart illustrating the usage method of a visual optical measurement equipment parameter adjustment training system provided in Embodiment 2 of the present invention. Detailed Implementation
[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0043] The purpose of this invention is to provide a visual training system for adjusting the parameters of optical measurement equipment and its usage method, which aims to help trainees learn and verify the relationship between the displacement of each optical element in the optical measurement equipment system and the imaging luminous flux, imaging depth of focus and imaging focal length.
[0044] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0045] Example 1
[0046] like Figure 1 As shown in this embodiment, a visualized optical measurement equipment parameter adjustment training system comprises a mechanical structure mounting platform and, sequentially mounted on the platform, an objective lens assembly, a parameter adjustment execution module, a parameter adjustment control module, a color camera, and a human-computer interaction device. This embodiment does not specifically limit the composition of the mechanical structure mounting platform, but it should at least include components such as guide rails, bearings, and lead screws to provide a foundation for the installation and movement of other structural modules. The human-computer interaction device communicates and interconnects with other modules via network cables and serial cables.
[0047] The human-computer interaction device is equipped with teaching and training software. The teaching and training software is used to provide a human-computer interaction interface to the trainees, obtain the parameter adjustment requirements input by the trainees through the human-computer interaction interface, generate parameter adjustment instructions based on the parameter adjustment requirements, and send the parameter adjustment instructions to the parameter adjustment control module.
[0048] The parameter adjustment control module is used to control the parameter adjustment execution module to change the imaging parameters of the optical measurement equipment according to the parameter adjustment command; the imaging parameters of the optical measurement equipment include at least one of imaging luminous flux, imaging depth of focus and imaging focal length.
[0049] A color camera, used in conjunction with an objective lens group, is used to generate images based on the changed imaging parameters of the optical metering equipment. The imaging results are then displayed to trainees through teaching and training software, enabling them to understand the impact of changing the imaging parameters of the optical metering equipment on the imaging results.
[0050] The teaching and training design of this practical training system provided in this embodiment is as follows: First, trainees understand and master the working principle through theoretical analysis: based on the task requirements, trainees calculate and analyze parameter adjustment needs using their learned theoretical knowledge; second, they train and master operational skills through practical operation, i.e., inputting parameter adjustment needs, and the training system controls the parameter adjustment execution module to change the imaging parameters of the optical measurement equipment; finally, they verify and digest the theory and summarize empirical rules through practical operation: obtaining the imaging results after changing the imaging parameters of the optical measurement equipment, and analyzing and summarizing the principles and rules of dimming, focusing, and zooming through experimental phenomena and data. Through this process of theory → practice → theory, the teaching objectives are gradually achieved, and the comprehensive quality of trainees is cultivated.
[0051] The parameter adjustment of the optical measurement equipment specifically includes dimming, focusing, and zooming. In this embodiment, the parameter adjustment execution module includes any one or more of the dimming module, focusing module, and zooming module.
[0052] The dimming module includes an imaging light flux adjustment module and a dimming stepper motor assembly, which includes at least one stepper motor.
[0053] The focusing module includes an imaging depth-of-focus adjustment module and a focusing stepper motor assembly, which includes at least one stepper motor.
[0054] The zoom module includes an imaging focal length adjustment module and a zoom stepper motor assembly, which includes at least one stepper motor.
[0055] The dimming stepper motor group, the focusing stepper motor group, and the magnification stepper motor group are all electrically connected to the parameter adjustment and control module.
[0056] All optical components in the aforementioned dimming module, focusing module, and zoom module are driven by stepper motors. The dimming module uses a stepper motor with angular displacement output, while the focusing and zoom modules use stepper motors with linear displacement output. Parameter adjustment requirements include the motor displacement vector and the operating direction of each stepper motor. The motor displacement vector includes the linear distance or angle of displacement of each stepper motor. Parameter adjustment requirements are data analyzed by the trainee based on the adjustment requirements of the optical measurement equipment. Parameter adjustment commands include the number of control pulses for each stepper motor and the energizing phase sequence of each stepper motor.
[0057] The optical elements of the dimming module, focusing module, and zoom module are the driving loads of each stepper motor. The parameter adjustment requirements input by the student are transmitted to the parameter adjustment control module. After being interpreted by the module, a parameter adjustment command is generated, which controls the parameter adjustment execution module to generate a power signal to drive the stepper motor. This drives the stepper motor to run, thereby dragging the optical elements in the dimming, focusing, and zoom modules to move and change the imaging of the target image in the color camera.
[0058] A stepper motor is a pulse motor that converts electrical pulse signals into angular or linear displacement. For each pulse signal input, the output shaft rotates by a fixed angle (which can be converted into linear displacement via a corresponding mechanical device), thus taking a step forward. Therefore, the total angle (or total displacement) rotated by the output shaft is proportional to the number of input pulses. The step angle α of the stepper motor is related to the number of phases m of the stator winding, the number of teeth z of the rotor, and the energizing method k, and can be expressed by the following formula (1):
[0059]
[0060] The linear displacement step distance l is related to the parameters mentioned above, as well as the rotor radius R of the stepper motor and the reduction ratio P of the mechanical structure. It can be expressed by the following formula (2):
[0061]
[0062] In the formula: α is the step angle of the stepper motor, l is the linear displacement step distance of the stepper motor, m is the number of phases of the stator winding, z is the number of teeth of the rotor, and k is the energizing method. When m phases and m steps are used, k = 1; when m phases and 2m steps are used, k = 2. R is the rotor radius of the stepper motor, and P is the linear displacement output reduction ratio of the stepper motor.
[0063] In practical equipment applications, there are generally three methods for dimming: filter wheel dimming, neutral density disk dimming, and aperture dimming. To facilitate learning these three methods, in this embodiment, the imaging luminous flux adjustment module includes any one or more of the following: aperture, filter wheel, and neutral density disk group. This embodiment provides a schematic diagram of the overall training system that includes an imaging luminous flux adjustment module that simultaneously comprises an aperture, filter wheel, and neutral density disk group, as well as an imaging depth-of-focus adjustment module and an imaging focal length adjustment module. Figure 2 As shown.
[0064] When the imaging light flux adjustment module includes an aperture, the dimming stepper motor group includes an aperture stepper motor; the aperture stepper motor is electrically connected to the parameter adjustment control module, and the aperture stepper motor is used to rotate the aperture according to the number of control pulses of the stepper motor and the energizing phase sequence of the stepper motor.
[0065] If it's aperture dimming, a stepper motor is needed to control the aperture opening size. Based on the dimming requirements, first calculate and analyze the amount of light entering the optical system. The amount of light is directly proportional to the aperture area, which in turn is directly proportional to the square of the aperture diameter. If the dimming amount needs to be reduced to half its original value, then the aperture diameter needs to be reduced to half its original value.
[0066] When the imaging light flux adjustment module includes a filter wheel, the dimming stepper motor assembly includes a filter wheel stepper motor; the filter wheel stepper motor is electrically connected to the parameter adjustment control module, and the filter wheel stepper motor is used to rotate the filter wheel according to the number of control pulses of the stepper motor and the energizing phase sequence of the stepper motor.
[0067] If a filter wheel is used for dimming, such as a 5-level filter wheel (with light transmittance of clear, 1 / 4, 1 / 16, 1 / 32, and 1 / 64 respectively), and the angle between two adjacent filters is 72°, then adjusting from a filter with a light transmittance of 1 / 4 to 1 / 16 requires a 72° rotation. If the stepper motor has a step angle of 1.8°, then a total of 40 pulses are required.
[0068] Q indicates the filter setting (number) of the filter wheel. i Let i be the i-th filter, where i is a natural number, 0 ≤ i ≤ 1. <i<Q。
[0069] When the imaging light flux adjustment module includes a neutral density disk group, the dimming stepper motor group includes a first neutral density disk stepper motor and a second neutral density disk stepper motor; the neutral density disk group includes a first neutral density disk and a second neutral density disk; the first neutral density disk stepper motor is electrically connected to the parameter adjustment control module, and the first neutral density disk stepper motor is used to rotate the first neutral density disk according to the number of control pulses of the stepper motor and the energizing phase sequence of the stepper motor; the second neutral density disk stepper motor is electrically connected to the parameter adjustment control module, and the second neutral density disk stepper motor is used to rotate the second neutral density disk according to the number of control pulses of the stepper motor and the energizing phase sequence of the stepper motor.
[0070] If neutral density variable light-sensing is used, a pair (two) of neutral density variable light-sensing disks are required. The light transmittance follows the same attenuation function relationship: one increases linearly, and the other decreases linearly. This pair of neutral density variable light-sensing disks requires two stepper motors for separate control. The manufacturing and design requirements for the neutral density variable light-sensing disks are as follows... Figure 3 As shown in the figure. The equation for the attenuation curve of the gradient light-transmitting film is shown below.
[0071]
[0072] The coating range is determined according to actual usage needs. The example shows 90° to 360°. In the formula, T represents the light transmittance at the position of the neutral density variable disk at angle θ, where θ is the angular position of the neutral density variable disk, and 90°≤θ≤360°.
[0073] If the required transmittance is T0, the angle θ corresponding to the neutral variable density disk is calculated according to formula (3). The angle β that the stepper motor needs to rotate in this mode is: β=θ-θ0. θ0 is the current angular position of the neutral variable density disk.
[0074] During the entire process of target acquisition by the photoelectric tracking system and aerial camera, the continuous and irregular nonlinear motion of the regularly shaped target relative to the imaging system causes continuous changes in the target's image size within the imaging system's field of view. This is reflected in the image as unstable pixel occupancy by the target, which affects target recognition and tracking. Therefore, it is necessary to implement zoom (i.e., magnification) on the optical system for observation. Specifically, in this embodiment, the imaging focal length adjustment module includes a front fixed group, a zoom group, a compensation group, and a rear fixed group sequentially arranged on the mechanical structure mounting platform; the zoom stepper motor group includes a zoom group stepper motor and a compensation group stepper motor.
[0075] The variable magnification stepper motor is electrically connected to the parameter adjustment control module. The variable magnification stepper motor is used to move the variable magnification group according to the number of control pulses and the energizing phase sequence of the stepper motor. The compensation group stepper motor is also electrically connected to the parameter adjustment control module. The compensation group stepper motor is used to move the compensation group according to the number of control pulses and the energizing phase sequence of the stepper motor.
[0076] The zoom equations are the core of analyzing zoom systems. Their main function is to explain the motion equations of the zoom group and the compensation group, respectively, under the condition that the zoom ratio and image plane displacement are fully compensated to meet the system requirements. Analyzing the equations, we can derive the Gaussian solution region under the condition that the compensation curve tends to be smooth.
[0077] To meet the needs of optical imaging systems for varying field of view, variable focal length optical lenses are generally selected. In this embodiment, the imaging focal length adjustment module adopts a typical four-component zoom system, such as... Figure 4 As shown, the components are the front fixed group, zoom group, compensation group, and rear fixed group. The front and rear fixed groups are stationary. The zoom lens changes the focal length through the intermediate zoom group, which can continuously change the system's focal length within a specific range. This change in focal length causes the focal plane to deviate from the image plane. The compensation group is moved to ensure that the image plane and focal plane coincide. The zoom group and compensation group are each driven by a corresponding stepper motor.
[0078] Only the zoom group and compensation group need to be analyzed. The zoom group lens has a focal length of f2' and an initial position distance of l20, while the compensation group lens has a focal length of f3' and an initial position distance of l30 (the rightward movement is set as positive, and the opposite as negative). For the zoom group φ2, if its slight movement distance dq, the fixed object point will correspondingly move slightly by dξ. Analysis shows that this is equivalent to the image point, object point, and zoom group first moving to the right as a whole by dq, then the object point returns to its original position, and thus the image point also moves to the left accordingly. in, The longitudinal magnification of the variable magnification group (the longitudinal magnifications of the other fixed-magnification group, compensated group, and fixed-magnification group are respectively β1) 2 , Therefore, we can obtain equation (4):
[0079]
[0080] It is evident that when |β2|<1, dq and dξ have the same sign, indicating that the variable magnification group and the compensation group move in the same direction. When |β2|>1, dq and dξ have opposite signs, indicating that the variable magnification group and the compensation group move in opposite directions. According to the object-image exchange relationship, when the variable magnification group is at the positions β2 and 1 / β2, the conjugate distance is the same. When β2=-1, the conjugate distance is the shortest, at which point dq and dξ change from moving in the same direction to moving in opposite directions.
[0081] Based on the above principle, it can be concluded that the offset generated by the zoom group to the image plane in the entire system is Assuming the compensation group itself moves by dΔ, the offset it produces on its image plane is: Let dζ be the variable. According to the basic laws of zoom, in order to maintain the stability of the image plane, the system conjugate distance must be 0, as shown in equation (5):
[0082]
[0083] The above equation can be rewritten as equation (6):
[0084]
[0085] For the variable magnification group, the change in β2 is mainly due to the change in object distance, as shown in equation (7):
[0086]
[0087] For the compensation group, the change in β3 is mainly due to the change in image distance, as shown in equation (8):
[0088] dΔ=f3'dβ3 (8).
[0089] Substituting equations (7) and (8) into equation (6), we obtain equation (9):
[0090]
[0091] From equation (9) above, it can be clearly seen that regardless of the position of each lens group in the system, and without considering the image plane displacement caused by the movement of each group, the existence form of each component in the equation is the same, which is a mathematical expression with β as the independent variable. That is, the existence forms of the ploid group and the compensation group are the same, the ploid group is based on β2 as the variable, and the compensation group is based on β3 as the variable.
[0092] Furthermore, in practical applications, the initial magnification factor β0 is: β0 = β2β3, and the system magnification requirement is β'. Then β' is shown in equation (10):
[0093]
[0094] In the formula This represents the magnification after shifting the zoom group. The magnification after the compensation group is moved.
[0095] Define three intermediate variables c = f2' + β'β0f3'. Therefore, we can calculate the result using equations (11) and (12) respectively. and
[0096]
[0097]
[0098] Based on the zoom requirements, and combining the linear step accuracy (l) of the stepper motor with the zoom principle, the trainees sequentially analyzed and calculated the required linear displacements S1 and S2 for the zoom group stepper motor and the compensation group stepper motor. Then, according to... and Calculate the number of drive pulses N1 and N2 for the stepper motor. Then, in the interface corresponding to the zoom module of the teaching and training software, input the energizing phase sequence (which determines the direction of linear displacement) and the number of pulses N1 and N2 for the zoom group stepper motor and the compensation group stepper motor, respectively.
[0099] The teaching and training software transmits the corresponding position command to the parameter adjustment and control module, which analyzes it to generate the corresponding drive electrical pulse signal, and sends it to the zoom group stepper motor and the compensation group stepper motor corresponding to the zoom module, so as to drive the motor to run.
[0100] The stepper motor drives the zoom and compensation optical components forward by a predetermined linear displacement, thereby changing the size of the target image on the monitor. The target image captured by the color camera changes size accordingly, and the corresponding image is displayed in the image display bar of the training software. Students observe the change in target image size or perform quantitative analysis based on the number of pixels occupied by the target image to verify the zoom principle and the working principle of the stepper motor.
[0101] In addition to visual observation by the human eye, this embodiment also employs an image magnification evaluation calculation method based on photosensitive units to quantitatively analyze the image magnification effect after image magnification is completed.
[0102] Since the photosensitive units on an image detector are all of a certain size, the number of photosensitive units occupied by the same target object in a certain direction (such as the horizontal direction) on the detector will change before and after image magnification. The magnification can be determined based on the number of photosensitive units occupied by the target image. Assuming the focal length before magnification is f1, the number of photosensitive units occupied by the target image in the horizontal direction is P1; and the focal length after magnification is f2, the number of photosensitive units occupied by the target image in the horizontal direction is P2. Then the magnification is P2 / P1.
[0103] In photoelectric tracking and aerospace imaging, the image quality can degrade due to factors such as the motion of the photoelectric imaging system itself, changes in the field of view environment, and the motion of the imaging target, potentially resulting in the loss of important information. To ensure clear images, the position of the lens group in the photoelectric imaging system needs to be continuously adjusted according to changes in the scene and imaging conditions, ensuring that the optical system satisfies the Gaussian law for photoelectric imaging. This adjustment process is called focusing. Specifically, in this embodiment, the imaging depth-of-focus adjustment module includes a focusing lens group; the focusing stepper motor group includes a focusing lens group stepper motor; the focusing lens group stepper motor is used to move the focusing lens group according to the number of control pulses and the energizing phase sequence of the stepper motor.
[0104] Ideally, the image of a target point on the focal plane should also be a point. However, in reality, in optical systems that are out of focus or have imaging errors, the image formed by a point is a blur. Since the photosensitive element itself has a certain size, when the diameter of the blur is smaller than the pixel size, it can be considered a point image, and the image received by the sensor can still be considered a sharp image. Conversely, when the diameter of the blur is larger than the pixel size, the image received by the sensor is a blurry image, requiring refocusing.
[0105] Depth of focus and depth of field are relative concepts. When the sensor position remains unchanged and the target moves, a clear image can be obtained within a certain range. The distance that the target can move is the depth of field. Conversely, if the object remains unchanged and the imaging surface moves within a certain range, a clear image can be obtained. This distance of movement is the depth of focus.
[0106] like Figure 5 As shown, ΔL represents the depth of field, where ΔL1 is the foreground depth of field and ΔL2 is the background depth of field; Δδ represents the depth of focus, where Δδ1 is the foreground depth of focus and Δδ2 is the background depth of focus. L is the shooting distance, d is the diameter of the blur spot, D is the aperture diameter of the lens, and u and v are the object distance and image distance, respectively. In the above model, the depth of field approximately satisfies equations (13) to (15):
[0107]
[0108]
[0109]
[0110] In the formula, F = f / D, which is the relative aperture or lens aperture coefficient. It can be deduced that when the object distance is sufficiently large, the object distance and the shooting distance are very close, and the object distance is greater than... Initially, the theoretical depth of field is infinite, meaning a clear image can be obtained no matter how far the target moves.
[0111] And the depth of focus satisfies (16)~(17):
[0112]
[0113]
[0114] In the above formula, under the object-image relationship at a certain focal length, the depth of focus can be calculated by substituting d with the size of the detector photosensitive unit.
[0115] When training using the training system provided in this embodiment, the trainee first analyzes and calculates the linear displacement S that the focusing stepper motor needs to move, based on the focusing requirements, the linear step accuracy l of the stepper motor, and the focusing principle, and then calculates the number of drive pulses N of the stepper motor. S is the ideal image distance calculated using the current Gaussian object-image formula. The defocusing degree S is the difference between the ideal image distance and the current actual image distance. In the formula, f is the current focal length of the system, y is the object distance, and y is the distance between the two objects. s This represents the actual image distance. Then, the corresponding energizing phase sequence (which determines the direction of linear displacement) and the number of pulses N are input into the teaching and training software.
[0116] The teaching and training software transmits the corresponding position command to the parameter adjustment and control module, which then analyzes and generates the corresponding drive pulse signal, which is sent to the motor corresponding to the focusing method to drive the motor to operate.
[0117] The stepper motor drives the focusing optical component to move forward in a predetermined direction, thus changing the position of the focal plane. The target image captured by the color camera undergoes a corresponding change in sharpness (clarity or blurriness), which is displayed in the image display bar of the training software. Students observe the changes in sharpness (clarity or blurriness) of the target image to verify the focusing principle and the working principle of the stepper motor.
[0118] In addition to visual observation, after image focusing is completed, this system employs an image evaluation method based on informatics functions to quantitatively analyze the image focusing effect. Images with more information in their informatics functions exhibit more uniform grayscale distribution; images with less information contain relatively simple grayscale components. Therefore, in this embodiment, image entropy is used to measure the texture complexity of the image. When the image entropy is at its maximum, the acquired image is the focused image.
[0119] As a two-dimensional information source, an image's entropy is a feature quantity that reflects the spatial characteristics of its gray-level distribution. Image entropy reflects the average amount of information in an image, or simply the uniformity of the gray-level distribution. It characterizes the overall features of the image in an average sense and is often used to determine local texture. The gray-level values of pixels represent various types of information, i.e., different gray-level values. Image entropy is represented by E, and K represents the number of gray levels in the image; p iLet represent the probability of each gray level occurring, then the image entropy is as shown in equation (18):
[0120]
[0121] Ideally, when all gray levels have the same probability, the maximum value of the image entropy is calculated, as shown in equation (19):
[0122]
[0123] Therefore, the maximum entropy value of the image can be calculated according to equation (20).
[0124]
[0125] This embodiment focuses on static images from a laboratory setting, so the window selection remains fixed. Considering the target image size, within the selected M×N (M pixels horizontally, N pixels vertically) focusing window, the maximum grayscale difference is calculated for each row of pixels in the horizontal direction. Taking into account the diversity of grayscale information, the four rows with the largest grayscale differences are selected from the M rows of pixels in the window shown in the gradient pixel row selection diagram. These four rows are then used as the evaluation area, and the average evaluation value is calculated as the current image's sharpness evaluation value. The maximum entropy values before and after focusing are calculated using the aforementioned informatics function formula for comparison, verifying the focusing effect. A higher entropy value indicates a sharper image.
[0126] This embodiment, based on the needs of college teaching and military training, first studies and compares the principles and working methods of dimming, focusing, and zooming in optical measurement equipment. Then, it establishes the optomechanical structure of dimming, focusing, and zooming, analyzing the movement accuracy of the optical lenses for dimming, focusing, and zooming. Based on the movement accuracy, a stepper motor that meets the accuracy and dragging requirements is selected. Finally, combined with teaching and training needs, a training system is developed. This system has the functions of controlling the angular and linear displacement values of the stepper motor according to the dimming, focusing, and zooming needs; controlling the speed and direction of the stepper motor; continuously adjusting the light transmittance of the dimming system within a certain range; continuously adjusting the optical zoom value within a certain range; providing a visually intuitive dimming, focusing, and zooming process; controlling the dimming, focusing, and zooming value by setting adjustment parameters to control the stepper motor; and automatically detecting the focusing and zooming effect. This helps trainees learn and verify the relationship between the displacement of optical components and the dimming, focusing, and zooming index parameters in the dimming, focusing, and zooming system, thereby better understanding and mastering the principles of dimming, focusing, and zooming in aerospace optical measurement equipment.
[0127] Example 2
[0128] This embodiment provides a method for using a visual optical measurement equipment parameter adjustment training system, applied to a visual optical measurement equipment parameter adjustment training system as described in Embodiment 1, such as... Figure 6 The flowchart shown illustrates the following steps for using this method:
[0129] A1. Obtain the parameter adjustment requirements input by the student. Specifically, the parameter adjustment requirements include the motor displacement vector and the operating direction of each stepper motor; the motor displacement vector includes the linear displacement distance of each stepper motor or the displacement angle of each stepper motor; the parameter adjustment requirements are the data obtained by the student based on the adjustment requirements of the optical measurement equipment.
[0130] A2. Generate parameter adjustment instructions based on the parameter adjustment requirements input by the student. Specifically, the parameter adjustment instructions include the number of control pulses for each stepper motor and the energizing phase sequence of each stepper motor.
[0131] A3. According to the parameter adjustment command, control the parameter adjustment execution module to change the imaging parameters of the optical measurement device; the imaging parameters of the optical measurement device include at least one of imaging luminous flux, imaging depth of focus and imaging focal length.
[0132] A4. Perform imaging based on the changed imaging parameters of the optical measurement equipment to obtain the imaging results.
[0133] A5. Present the imaging results to the trainees. This allows trainees to understand, through a visual interface, the impact of changing the imaging parameters of the optical measurement equipment on the imaging results.
[0134] Step A2 specifically includes the following steps:
[0135] A21. Determine the number of control pulses for each stepper motor based on the motor displacement vector and the step accuracy of each stepper motor.
[0136] A22. Determine the energizing phase sequence of each stepper motor according to its rotation direction.
[0137] In practical applications of the equipment, there are generally three ways to adjust the light: filter wheel dimming, neutral density disk dimming, and aperture dimming. To facilitate learning these three methods, in this embodiment, the imaging light flux adjustment module includes any one or more of the aperture, filter wheel, and neutral density disk group.
[0138] When the imaging light flux adjustment module includes an aperture stop, the dimming stepper motor assembly includes an aperture stop stepper motor; the aperture stop stepper motor is electrically connected to the parameter adjustment control module, and the aperture stop stepper motor is used to rotate the aperture stop according to the number of control pulses of the stepper motor and the energizing phase sequence of the stepper motor.
[0139] If it's aperture dimming, a stepper motor is needed to control the aperture opening size. Based on the dimming requirements, first calculate and analyze the amount of light entering the optical system. The amount of light is directly proportional to the aperture area, which in turn is directly proportional to the square of the aperture diameter. If the dimming amount needs to be reduced to half its original value, then the aperture diameter needs to be reduced to half its original value.
[0140] When the imaging light flux adjustment module includes a filter wheel, the dimming stepper motor assembly includes a filter wheel stepper motor; the filter wheel stepper motor is electrically connected to the parameter adjustment control module, and the filter wheel stepper motor is used to rotate the filter wheel according to the number of control pulses of the stepper motor and the energizing phase sequence of the stepper motor.
[0141] If a filter wheel is used for dimming, such as a 5-level filter wheel (with light transmittance of clear, 1 / 4, 1 / 16, 1 / 32, and 1 / 64 respectively), and the angle between two adjacent filters is 72°, then adjusting from a filter with a light transmittance of 1 / 4 to 1 / 16 requires a 72° rotation. If the stepper motor has a step angle of 1.8°, then a total of 40 pulses are required.
[0142] Q indicates the filter setting (number) of the filter wheel. i Let i be the i-th filter, where i is a natural number, 0 ≤ i ≤ 1. <i<Q。
[0143] When the imaging luminous flux adjustment module includes a neutral density disk group, the dimming stepper motor group includes a first neutral density disk stepper motor and a second neutral density disk stepper motor; the neutral density disk group includes a first neutral density disk and a second neutral density disk; the first neutral density disk stepper motor is electrically connected to the parameter adjustment control module, and the first neutral density disk stepper motor is used to rotate the first neutral density disk according to the number of control pulses of the stepper motor and the energizing phase sequence of the stepper motor; the second neutral density disk stepper motor is electrically connected to the parameter adjustment control module, and the second neutral density disk stepper motor is used to rotate the second neutral density disk according to the number of control pulses of the stepper motor and the energizing phase sequence of the stepper motor.
[0144] If neutral density disc dimming is used, a pair (two) neutral density discs are required. The light transmittance follows the same attenuation function, with one disc linearly increasing and the other linearly decreasing. This pair of neutral density discs requires two stepper motors for separate control. The shape of the neutral density discs is as follows: Figure 3 As shown. The coating range is determined according to actual usage requirements; the example shows 90° to 360°. In the formula, T represents the transmittance at angle θ of the neutral density variable disk, where θ is the angular position of the neutral density variable disk, and 90°≤θ≤360°.
[0145] If the required transmittance is T0, then the angle θ corresponding to the neutral variable density disk is calculated according to formula (3). The angle β that the stepper motor needs to rotate in this mode is: β=θ-θ0. θ0 is the current angular position of the neutral variable density disk.
[0146] In actual training, trainees first calculate and analyze the amount of light entering the optical system. The amount of light is directly proportional to the area of the aperture, which in turn is directly proportional to the square of the aperture's aperture diameter. Then, in the dimming module of the training software, they input the corresponding energizing phase sequence (determining the rotation direction) and the number of pulses N.
[0147] The teaching and training software transmits the corresponding position commands (pulse quantity and pulse phase sequence) to the parameter adjustment and control module. After analysis, the module generates corresponding drive pulse signals (including pulse phase sequence, pulse quantity, and pulse frequency), which are then sent to the motor drive motor corresponding to the dimming mode (direction of rotation, total displacement, and speed). Speed formula: In the formula, f is the pulse frequency of the stepper motor, α is the step distance of the stepper motor, and n is the speed of the stepper motor.
[0148] The stepper motor drives the dimming optics to rotate by a predetermined angle, thereby changing the amount of light entering the color camera. The target image captured by the color camera undergoes corresponding changes in brightness, which are then displayed in the image display panel of the training software. Trainees observe these changes in brightness to verify the dimming principle and the working principle of the stepper motor.
[0149] During the entire process of target acquisition by the photoelectric tracking system and aerial camera, the continuous and irregular nonlinear motion of the regularly shaped target relative to the imaging system causes a continuous change in the target's image size within the imaging system's field of view. This is reflected in the image as unstable pixel occupancy by the target, which affects target recognition and tracking. Therefore, it is necessary to implement zoom (i.e., magnification) on the optical system for observation. Specifically, in this embodiment...
[0150] Based on the zoom requirements, and combining the linear step accuracy (l) of the stepper motor with the zoom principle, the trainees sequentially analyzed and calculated the required linear displacements S1 and S2 for the zoom group stepper motor and the compensation group stepper motor. Then, according to... and Calculate the number of drive pulses N1 and N2 for the stepper motor. Then, in the interface corresponding to the zoom module of the teaching and training software, input the energizing phase sequence (which determines the direction of linear displacement) and the number of pulses N1 and N2 for the zoom group stepper motor and the compensation group stepper motor, respectively.
[0151] The teaching and training software transmits the corresponding position command to the control module, which then analyzes it to generate the corresponding drive pulse signal. This signal is then sent to the zoom group stepper motor and the compensation group stepper motor corresponding to the zoom module, driving the motors to operate.
[0152] The stepper motor drives the zoom and compensation optical components forward by a predetermined linear displacement, thereby changing the size of the target image on the monitor. The target image captured by the color camera changes size accordingly, and the corresponding image is displayed in the image display bar of the training software. Students observe the change in target image size or perform quantitative analysis based on the number of pixels occupied by the target image to verify the zoom principle and the working principle of the stepper motor.
[0153] Furthermore, during photoelectric tracking and aerospace photography, factors such as the motion of the photoelectric imaging system itself, changes in the field of view environment, and the motion of the imaging target can cause a decline in system imaging quality, potentially resulting in the loss of important information. To ensure the acquisition of clear images, it is necessary to continuously adjust the position of the lens group of the photoelectric imaging system according to changes in the scene and imaging conditions, so that the optical system satisfies the Gaussian law for photoelectric imaging. This adjustment process of the imaging system is called focusing.
[0154] When training using the training system provided in this embodiment, the trainee first analyzes and calculates the linear displacement S that the focusing stepper motor needs to move, based on the focusing requirements, the linear step accuracy l of the stepper motor, and the focusing principle, and then calculates the number of drive pulses N of the stepper motor. S is the ideal image distance calculated using the current Gaussian object-image formula. The defocusing degree S is the difference between the ideal image distance and the current actual image distance. In the formula, f is the current focal length of the system, y is the object distance, and y is the distance between the two objects. s This represents the actual image distance. Then, the corresponding energizing phase sequence (which determines the direction of linear displacement) and the number of pulses N are input into the teaching and training software.
[0155] The teaching and training software transmits the corresponding position command to the parameter adjustment and control module, which then analyzes and generates the corresponding drive pulse signal, which is sent to the motor corresponding to the focusing method to drive the motor to operate.
[0156] The stepper motor drives the focusing optical component to move forward in a predetermined direction, thus changing the position of the focal plane. The target image captured by the color camera undergoes a corresponding change in sharpness (clarity or blurriness), which is displayed in the image display bar of the training software. Students observe the changes in sharpness (clarity or blurriness) of the target image to verify the focusing principle and the working principle of the stepper motor.
[0157] This embodiment provides a method for using a visualized optical measurement equipment parameter adjustment training system. It features the ability to control the angular and linear displacement of a stepper motor according to dimming, focusing, and zoom requirements; control the stepper motor's speed and direction; continuously adjust the light transmittance of the dimming system within a certain range; continuously adjust the optical zoom value within a certain range; provide a clear and intuitive visualization of the dimming, focusing, and zooming process; control the dimming, focusing, and zoom values by setting adjustment parameters to control the stepper motor; and automatically detect the focusing and zooming effect. This system helps trainees learn and verify the relationship between the displacement of optical components and the dimming, focusing, and zooming parameters in a dimming, focusing, and zooming system, thereby better understanding and mastering the dimming, focusing, and zooming principles of aerospace optical measurement equipment.
[0158] It should be noted that the object information (including but not limited to object device information, object personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this invention are all information and data authorized by the object or fully authorized by all parties, and the collection, use and processing of related data must comply with the relevant laws, regulations and standards of the relevant countries and regions.
[0159] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided by this invention can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided by this invention may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided by this invention may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.
[0160] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0161] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. Furthermore, those skilled in the art will recognize that, based on the ideas of the present invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.
Claims
1. A visual training system for adjusting parameters of optical measurement equipment, characterized in that, include: The mechanical structure mounting platform and the objective lens group, parameter adjustment execution module, parameter adjustment control module, color camera, and human-computer interaction device are sequentially mounted on the mechanical structure mounting platform; the human-computer interaction device is equipped with teaching and training software. The teaching and training software is used to provide a human-computer interaction interface to students, obtain the parameter adjustment requirements input by students through the human-computer interaction interface, generate parameter adjustment instructions according to the parameter adjustment requirements, and send the parameter adjustment instructions to the parameter adjustment control module. The parameter adjustment requirements include the motor displacement vector and the operating direction of each stepper motor. The motor displacement vector includes the linear displacement distance of each stepper motor or the displacement angle of each stepper motor. The parameter adjustment requirements are the data obtained by the trainee based on the adjustment requirements of the optical measurement equipment. The parameter adjustment instructions include the number of control pulses for each stepper motor and the energizing phase sequence of each stepper motor. The parameter adjustment control module is used to control the parameter adjustment execution module to change the imaging parameters of the optical measurement device according to the parameter adjustment command; the imaging parameters of the optical measurement device include at least one of imaging luminous flux, imaging depth of focus and imaging focal length; the parameter adjustment execution module includes any one or a combination of multiple of the following: a dimming module, a focusing module and a zoom module; The dimming module includes an imaging light flux adjustment module and a dimming stepper motor assembly, wherein the dimming stepper motor assembly includes at least one stepper motor; The focusing module includes an imaging depth-of-focus adjustment module and a focusing stepper motor assembly, wherein the focusing stepper motor assembly includes at least one stepper motor. The zoom module includes an imaging focal length adjustment module and a zoom stepper motor assembly, wherein the zoom stepper motor assembly includes at least one stepper motor; The dimming stepper motor group, the focusing stepper motor group, and the magnification stepper motor group are all electrically connected to the parameter adjustment and control module; The color camera is used in conjunction with the objective lens group to capture images based on the changed imaging parameters of the optical metering device, and the imaging results are displayed to the trainees through the teaching and training software, so that the trainees can understand the impact of changing the imaging parameters of the optical metering device on the imaging results.
2. The visual optical measurement equipment parameter adjustment training system according to claim 1, characterized in that, The imaging light flux adjustment module includes one or more of the following: aperture, filter wheel, and neutral density disk group; When the imaging light flux adjustment module includes an aperture, the dimming stepper motor group includes an aperture stepper motor; the aperture stepper motor is electrically connected to the parameter adjustment control module, and the aperture stepper motor is used to rotate the aperture according to the number of control pulses of the stepper motor and the energizing phase sequence of the stepper motor; When the imaging light flux adjustment module includes a filter wheel, the dimming stepper motor group includes a filter wheel stepper motor; the filter wheel stepper motor is electrically connected to the parameter adjustment control module, and the filter wheel stepper motor is used to rotate the filter wheel according to the number of control pulses of the stepper motor and the energizing phase sequence of the stepper motor; When the imaging light flux adjustment module includes a neutral density disk group, the dimming stepper motor group includes a first neutral density disk stepper motor and a second neutral density disk stepper motor; the neutral density disk group includes a first neutral density disk and a second neutral density disk; the first neutral density disk stepper motor is electrically connected to the parameter adjustment control module, and the first neutral density disk stepper motor is used to rotate the first neutral density disk according to the number of control pulses of the stepper motor and the energizing phase sequence of the stepper motor; the second neutral density disk stepper motor is electrically connected to the parameter adjustment control module, and the second neutral density disk stepper motor is used to rotate the second neutral density disk according to the number of control pulses of the stepper motor and the energizing phase sequence of the stepper motor.
3. The visual optical measurement equipment parameter adjustment training system according to claim 1, characterized in that, The imaging focal length adjustment module includes a front fixed group, a zoom group, a compensation group, and a rear fixed group, which are sequentially arranged on the mechanical structure mounting platform; the zoom stepper motor group includes a zoom group stepper motor and a compensation group stepper motor; The variable magnification stepper motor is electrically connected to the parameter adjustment control module. The variable magnification stepper motor is used to move the variable magnification group according to the number of control pulses of the stepper motor and the energizing phase sequence of the stepper motor. The compensation group stepper motor is electrically connected to the parameter adjustment control module. The compensation group stepper motor is used to move the compensation group according to the number of control pulses of the stepper motor and the energizing phase sequence of the stepper motor.
4. The visual optical measurement equipment parameter adjustment training system according to claim 1, characterized in that, The imaging depth-of-focus adjustment module includes a focusing lens group; the focusing stepper motor group includes a focusing lens group stepper motor; the focusing lens group stepper motor is used to move the focusing lens group according to the number of control pulses of the stepper motor and the energizing phase sequence of the stepper motor.
5. A method for using a visual training system for adjusting parameters of optical measurement equipment, characterized in that, The system is applied to the visual optical measurement equipment parameter adjustment training system as described in any one of claims 1-4, comprising: Obtain the parameter adjustment requirements input by the student; Based on the parameter adjustment requirements input by the student, generate parameter adjustment instructions; According to the parameter adjustment command, the parameter adjustment execution module is controlled to change the imaging parameters of the optical measurement device; the imaging parameters of the optical measurement device include at least one of imaging luminous flux, imaging depth of focus and imaging focal length. Imaging is performed based on the modified imaging parameters of the optical measurement equipment to obtain imaging results; The imaging results are shown to the trainees so that they can understand the impact of changing the imaging parameters of the optical measurement equipment on the imaging results.
6. The method of using the visual optical measurement equipment parameter adjustment training system according to claim 5, characterized in that, The parameter adjustment requirements include the motor displacement vector and the operating direction of each stepper motor; the motor displacement vector includes the linear displacement distance of each stepper motor or the displacement angle of each stepper motor; the parameter adjustment requirements are data obtained by the trainee based on the adjustment requirements of the optical measurement equipment.
7. The method of using the visual optical measurement equipment parameter adjustment training system according to claim 6, characterized in that, The parameter adjustment instructions include the number of control pulses for each stepper motor and the energizing phase sequence of each stepper motor; based on the parameter adjustment requirements input by the student, parameter adjustment instructions are generated, specifically including: The number of control pulses for each stepper motor is determined based on the motor displacement vector and the step accuracy of each stepper motor. Determine the energizing phase sequence of each stepper motor based on its rotation direction.