Time interval measuring equipment based on high-speed video collector

Abstract

The utility model discloses time interval measuring equipment based on a high-speed video collector, and belongs to the technical field of time interval measurement and metering traceability. In order to solve the technical problems of high measurement uncertainty and incapability of accurately tracing due to difficulty in synchronous triggering of visual triggering type timing equipment, the utility model comprises at least two independently adjustable lenses and light paths, the light guide system is used for receiving and deflecting light of each light path; and a high-speed photosensitive device. The key point is that the light guide system converges light from different lenses and images the light on different areas of the single high-speed photosensitive device respectively. Visual information of a time standard source and a detected object can be synchronously recorded at a high speed through the photosensitive device, and an accurate time interval is calculated by analyzing a video key frame and combining with a known frame rate. According to the utility model, the synchronization error is effectively eliminated, the uncertainty is reduced to millisecond level, the high-precision measurement and traceability of visual trigger equipment are realized, the structure is compact, and the adjustment is convenient.

Description

Technical Field

[0001] This utility model relates to the field of time interval measurement and metrological traceability technology, specifically a time interval measurement device based on a high-speed video acquisition device. Background Technology

[0002] Time interval measurement is widely used in scientific research, industrial production, engineering testing, and metrological calibration. Traditional precision time interval measurement often relies on electrical signal triggering to acquire time information by synchronously starting and stopping the standard and the device under test. However, in practical applications, there are many measurement scenarios where electrical signal triggering is not feasible or convenient, such as timing the movement of a mechanical stopwatch hand, visually judging the moment of crossing the finish line in sports, and observing the moment a projectile leaves the barrel or hits a target in weapons testing. For these devices or events that rely on visual observation to determine the start and end states, existing measurement methods based on electrical signal triggering struggle to achieve precise synchronization between the standard and the measured object, leading to significant time uncertainty introduced into the triggering process (even reaching the second level in long-term measurements), severely affecting the accuracy of the measurement results and the reliability of traceability. Utilizing high-speed camera technology to capture visual information offers a possibility for solving these problems, but how to construct a measurement system that can capture information at high speed while ensuring accurate time synchronization remains a current technical challenge.

[0003] Chinese invention patent CN116074617B discloses an integrated array camera and its imaging control method. The integrated array camera includes a main control unit and multiple camera modules. Each camera module performs focus search and image acquisition only on a sub-level focus search area divided from the focus search area along the focal length adjustment direction. This invention divides the focus search area and performs focus search and image acquisition synchronously by multiple camera modules, thereby greatly improving imaging efficiency.

[0004] Chinese invention patent CN106643669B discloses a method for single-center projection conversion of multi-lens, multi-detector aerial cameras. It establishes a mathematical model reflecting the relative orientational relationships between multi-lens cameras and multi-detectors, and solves the joint orientational elements and distortion parameters of multi-lens and multi-detectors through static geometric calibration. It also establishes a mathematical model that takes into account the relative orientational changes of multi-detector images during dynamic flight. This invention method can be universally applied to the generation of equivalent single-center projection virtual images of multi-lens, multi-detector area array stitched aerial mapping cameras.

[0005] The above designs improve imaging efficiency or achieve geometric accuracy for large-scale mapping by using multiple camera modules working in parallel (CN116074617B) or multiple lenses and multiple detectors for aerial mapping geometric calibration and stitching (CN106643669B). However, they still have certain limitations, such as the inability to effectively solve the key measurement error problem introduced by the inability to guarantee absolute synchronous observation between the standard and the object being measured when performing high-precision, traceable time interval measurements on visual triggering devices. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the existing technology and propose a time interval measurement device based on a high-speed video acquisition device to solve the above-mentioned problems.

[0007] By constructing a measurement system employing a single high-speed photosensitive device but featuring two independent adjustable optical paths, optical methods are used to simultaneously and synchronously present image information from different directions (one aligned with a time standard, and the other with the measured event) onto different areas of this single photosensitive device and record it at high speed. This fundamentally eliminates synchronization errors between multiple cameras and controls trigger uncertainty within an extremely small range (e.g., milliseconds), thus providing a precise and reliable means of measuring and tracing time intervals for visually triggered devices or events.

[0008] The purpose of this utility model is achieved through the following technical solution: A time interval measurement device based on a high-speed video acquisition device includes a rotating frame, a rotating ring fixedly connected to the outer end of the rotating frame, and ball-jointly connected to the rotating frame with symmetrically arranged ball rings one and two. Lens one and lens two are respectively threaded onto ball ring one and ball ring two. A light guide frame is fixedly connected to the end of the rotating frame away from lens one and lens two. Ball head one and ball head two are respectively ball-jointly connected to the two sides of the light guide frame at positions corresponding to ball ring one and ball ring two. Light guide lens one and light guide lens two are respectively fixedly connected to the ends of ball head one and ball head two away from the light guide frame. A photosensitive device is provided on the side of the light guide frame away from the rotating frame. Adjusting rods are fixedly connected to the ends of light guide lens one and light guide lens two away from the light guide frame. An organic body is rotatably connected to the outside of the rotating ring. An organic box is fixedly connected to the end of the organic body away from the rotating frame. A light guide lens slide plate is ball-jointly connected to the ends of light guide lens one and light guide lens two away from the light guide frame.

[0009] The rotating frame has a V-shaped cross-section along the horizontal direction, and the opening of the V-shaped structure is oriented towards the photosensitive device.

[0010] Both the outer ends of ball ring one and ball ring two are spherical structures, and both lens one and lens two are lenses with autofocus function.

[0011] The line connecting ball head one and ball head two passes through the axis of the rotating frame, and the ends of light guide lens one and light guide lens two that are far apart from each other are both spherical structures.

[0012] The adjusting rods, which are fixedly connected to light guide lens one and light guide lens two, pass through the light guide slide plate, the main body and the chassis in sequence at the end away from the light guide frame.

[0013] Both light guide lens one and light guide lens two have wedge-shaped cross-sections along the horizontal direction, which are used to deflect the light from lens one and lens two. The tips of the wedge-shaped structures are both set towards the direction close to 7. The outer end of the rotating ring is rotatably connected to the body.

[0014] The axis of rotation is parallel to the line connecting the body and the chassis. Through holes are provided at the corresponding positions of the light guide mirror slide, the body and the chassis and the adjusting rod, and the diameter of the through holes is larger than the outer diameter of the adjusting rod. The diameter of the through holes on the light guide mirror slide, the body and the chassis increases sequentially.

[0015] The ends of the two light guide mirror slides that are far apart from each other are fixedly connected to the body, while the ends of the two light guide mirror slides that are close to each other are spherical structures that cooperate with the corresponding light guide lens one and light guide lens two.

[0016] The centers of the spherical structures at the ends of light guide lenses one and two away from the light guide frame coincide with the centers of the spherical heads one and two, respectively.

[0017] The beneficial effects of this utility model are:

[0018] 1. Significantly improves measurement accuracy and reliability. By employing a single high-speed photosensitive device to simultaneously capture image information from two independent optical paths (aligned to the time standard and the object under test, respectively), the inherent inter-frame synchronization error when using multiple cameras for synchronous shooting is fundamentally eliminated. This ensures a completely unified benchmark for time measurement, greatly reducing measurement uncertainty, particularly reducing the triggering asynchrony error, which could be as high as seconds in traditional methods, to the millisecond level, thereby significantly improving the accuracy and reliability of time interval measurements.

[0019] 2. This invention enables effective traceability of visually triggered devices. It solves the problem of existing technologies struggling to accurately measure time intervals for timing devices whose start / stop status can only be determined visually (e.g., the movement of a mechanical stopwatch hand, changes in the display of a bullet velocity meter, or the passage of a projectile through a specific area). By simultaneously capturing visual information of the standard time and the measured event, accurate value transfer and calibration of such devices are possible.

[0020] 3. It provides precise, stable, and wide-range optical path adjustment capabilities. Its ingenious mechanical structure design, including ball joints for adjusting lens pointing, specially shaped (e.g., wedge-shaped) light guide lenses for deflecting the optical path, spherical guide plates for stable support and guidance, and an adjustment rod channel with progressively larger through-holes, collectively ensures that the two optical paths can be independently, precisely, and smoothly adjusted over a wide range. This allows the device to flexibly adapt to different measurement distances and target layouts, and to accurately project images from both fields of view onto designated areas of the photosensitive device, guaranteeing the effectiveness of the measurement.

[0021] 4. Ensure high-quality image acquisition for analysis. Select high-performance optical lenses (such as those with autofocus) to ensure clear and sharp images are obtained during high-speed acquisition. High-quality images are the foundation for subsequent video analysis and accurate identification of keyframes (such as the moment of digital transition or the moment an object crosses a line), and directly affect the accuracy of the final time interval calculation.

[0022] 5. Structural optimization enhances equipment integration and stability. Compared to dual-camera or multi-camera systems requiring complex external synchronization devices, this invention integrates dual optical paths into a single unit and outputs through a single sensor, resulting in a more compact and highly integrated overall structure. The optimized mechanical structure (such as the V-shaped rotating frame) effectively utilizes space while maintaining rigidity. This integrated and optimized design helps improve the overall stability and environmental adaptability of the equipment, reducing potential points of failure.

[0023] 6. Convenient and easy to use: The operating end of the adjustment mechanism (such as the end of the adjustment rod) is reasonably arranged (for example, led to the rear of the equipment), and the adjustment process is smooth and interference-free, so that users can easily and intuitively complete the alignment and optical path adjustment of the equipment, which improves the practicality and ease of use of the equipment. Attached Figure Description

[0024] Figure 1 The overall structure of this utility model Figure 1 ;

[0025] Figure 2 This is an exploded view of the entire utility model;

[0026] Figure 3 For the localized explosion of this utility model Figure 1 ;

[0027] Figure 4 For the localized explosion of this utility model Figure 2 ;

[0028] Figure 5 This is a front view of the present invention;

[0029] Figure 6 For the present utility model Figure 5 Sectional view of AA;

[0030] Figure 7 For the present utility model Figure 6 BB section view;

[0031] Figure 8 For the present utility model Figure 7 CC section view;

[0032] Figure 9 For the present utility model Figure 7 Enlarged view at point D;

[0033] Figure 10 The overall structure of this utility model Figure 2 ;

[0034] Figure 11 The appearance and structure of this utility model Figure 1 ;

[0035] Figure 12 The appearance and structure of this utility model Figure 2 .

[0036] Explanation of the labels in the diagram

[0037] 1. Rotating frame; 2. Rotating ring; 3. Ball ring one; 4. Ball ring two; 5. Lens one; 6. Lens two; 7. Light guide frame; 8. Ball head one; 9. Ball head two; 10. Light guide lens one; 11. Light guide lens two; 12. Photosensitive device; 13. Adjusting rod; 14. Body; 15. Chassis; 16. Light guide mirror slide plate. Detailed Implementation

[0038] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0039] It should be noted that the directional concepts of "left", "right", "up", "down", "front", "back", "inner", and "outer" in the following scheme are all relative directions, and will not be listed one by one here.

[0040] Example 1

[0041] like Figures 1 to 12As shown, this embodiment provides a core optical and adjustment structure for a time interval measurement device based on a high-speed video acquisition device. It aims to achieve high-precision and high-reliability time interval measurement and traceability by simultaneously acquiring high-speed images from two different fields of view through a single photosensitive device.

[0042] The main body of the device in this embodiment is based on a rotating frame 1, with a rotating ring 2 securely fixed to its outer end. Ball ring 3 and ball ring 4 are symmetrically mounted on the rotating frame 1 via ball joints. The outer surfaces of these two ball rings 3 and 4 are smooth spherical structures, allowing for flexible angle adjustment within the corresponding ball sockets of the rotating frame 1. High-quality, autofocus-enabled lenses 5 and 6 are securely screwed onto ball ring 3 and ball ring 4 respectively using precision threads. This design allows for easy lens replacement or initial alignment.

[0043] A light guide frame 7 is fixedly connected to the end of the rotating frame 1 furthest from lens 5 and lens 6 (i.e., the rear end). On both sides of the light guide frame 7, corresponding to ball rings 3 and 4, ball heads 8 and 9 are movably connected via ball joints. This ball joint connection ensures that ball heads 8 and 9 can rotate freely around the connection point. In the design, the virtual line connecting the center of ball head 8 and the center of ball head 9 passes precisely through the central axis of the rotating frame 1, ensuring the symmetry of subsequent adjustments.

[0044] At the ends of ball heads 8 and 9 furthest from the light guide frame 7, light guide lenses 10 and 11 are securely connected, respectively. These two light guide lenses 10 and 11 are key components for achieving dual-path convergence. Their horizontal cross-sections are designed with a specific wedge shape, and the tips (thin edges) of the wedge structure are uniformly oriented towards the light guide frame 7. The main function of this wedge structure is to utilize the principle of light refraction to deflect parallel or near-parallel light beams from lens 5 and lens 6 inwards. Simultaneously, the outer surfaces of the ends of light guide lenses 10 and 11 furthest from the light guide frame 7 are machined into precise spherical structures.

[0045] A high-speed, high-resolution photosensitive device 12, such as a CMOS or CCD image sensor with a high frame rate (e.g., ≥1000fps), is mounted on the side of the light guide frame 7 away from the rotating frame 1 (i.e., the rear end face), with its photosensitive surface facing the deflected light from the light guide lenses 10 and 11.

[0046] To achieve precise adjustment of the angles of light guide lenses 10 and 11, adjustment rods 13 are fixedly connected to the outer ends of light guide lens 10 and light guide lens 11, which have spherical structures. The adjustment rods 13 can be pushed, pulled, or rotated through an external mechanism, thereby driving the light guide lenses 10 and 11 to perform precise pitch or yaw movements around their connection points with the ball heads 8 and 9.

[0047] A key geometric feature of this embodiment is that the center of the spherical structure at the end of the light guide lens 10 furthest from the light guide frame 7 precisely coincides with the center of the spherical head 8 to which it is connected. Similarly, the center of the corresponding spherical structure of the light guide lens 11 also precisely coincides with the center of the spherical head 9 to which it is connected. This concentric ball joint structure ensures that when adjusting the light guide lenses 10 and 11 via the adjusting rod 13, the lenses only rotate purely around their centers without any additional translation, greatly simplifying the complexity of optical path alignment and improving adjustment accuracy and stability.

[0048] Finally, the outer end of the rotating ring 2, to which the rotating frame 1 is fixed, is rotatably connected to the body 14 (which serves as the support base or connector of the equipment). This allows the entire core component (rotating frame 1 and all its components) containing the dual lenses and light guide system to rotate as a whole relative to the body 14, facilitating a rough adjustment of the overall observation direction of the equipment.

[0049] Work process:

[0050] Installation and securing: Secure the equipment to a tripod or other stable platform via the body 14.

[0051] Coarse alignment: Rotate the rotating ring 2 connected to the body 14 to roughly align the entire rotating frame 1 and lens assembly towards the target area. Then, using the ball joint connections between ball ring 3 and ball ring 4 and the rotating frame 1, independently adjust the pointing of lens 5 and lens 6 to align with two different targets. For example, point lens 5 at the display of a standard microsecond timer used as a time reference, and point lens 6 at the area where the time interval to be measured occurs (such as the finish line of a timing track, the moment a projectile leaves the barrel, etc.). Activate the autofocus function of lens 5 and lens 6 to ensure both targets are clearly imaged.

[0052] Fine-tuning the light path convergence: By operating the external adjustment mechanism (such as a knob or slider) connected to the adjustment rod 13, the tilt angles of the first light guide lens 10 and the second light guide lens 11 can be adjusted independently. Due to the wedge-shaped structure of the light guide lenses 10 and 11 and the precise rotation around the center of the ball heads 8 and 9 (ensuring the concentric ball joint structure), the deflection angle of the light from the first lens 5 and the second lens 6 can be precisely controlled. This adjustment is repeated until the image from the first lens 5 is precisely projected through the first light guide lens 10 onto half of the photosensitive surface of the photosensitive device 12 (e.g., the left half), while the image from the second lens 6 is precisely projected through the second light guide lens 11 onto the other half of the photosensitive surface of the photosensitive device 12 (e.g., the right half). The two images are displayed side-by-side on the photosensitive device 12 without overlapping.

[0053] High-speed synchronous acquisition: The high-speed video recording function of the photosensitive device 12 is activated. The photosensitive device 12 begins to continuously acquire images at its set high frame rate (e.g., 3500 frames / second or higher). Each frame contains synchronous image information from lens 1 5 (standard time source) and lens 2 6 (the event being measured), located in the left and right (or top and bottom) halves of the image, respectively.

[0054] Data Analysis and Calculation: After acquisition, the recorded high-speed video file is analyzed. In the video sequence, the start and end frames of the standard microsecond meter's digital transitions (in one half of the frame) are precisely identified, as well as the start and end frames of visual markers indicating the occurrence of the measured event (such as an object passing a marker line, a flash of light, etc.) (in the other half of the frame). Since the two images are simultaneously exposed on the same photosensitive device 12, their frames are perfectly synchronized. By calculating the frame difference between the start and end frames of each of the two events (the standard source change and the measured event), and combining this with the precise frame rate (i.e., the time interval between each frame) determined by the photosensitive device 12 through traceability, the precise time interval of the measured event can be calculated.

[0055] By using a single image sensor 12 to simultaneously acquire two field-of-view information from lens 5 and lens 6, the frame synchronization error problem that is unavoidable when using two independent cameras is fundamentally eliminated. All time information is based on the clock reference of the same image sensor 12, which greatly improves the accuracy and reliability of time interval measurement.

[0056] By aligning lens 5 with the standard time source and lens 6 with the object being measured, high-precision time interval measurement and value transmission can be performed directly on devices whose start / stop status can only be judged visually (such as the movement of the pointer of a mechanical stopwatch, the trigger display changes of a bullet velocity meter, etc.), solving the problem that traditional electrical signal triggering methods cannot be applied.

[0057] Lens 1 (5) and Lens 2 (6) are connected by a ball joint of ball ring 1 (3) and ball ring 2 (4) to achieve wide-range pointing adjustment; Light guide lens 1 (10) and Light guide lens 2 (11) are connected by a concentric ball joint with ball head 1 (8) and ball head 2 (9) and a wedge structure to achieve precise, stable and independent deflection control of the light path, ensuring that the images of the two fields of view can be accurately and clearly projected onto the designated area of ​​the photosensitive device 12 respectively.

[0058] The use of lenses 5 and 6, both equipped with autofocus, ensures clear target images at different object distances, which is crucial for accurately identifying keyframes and determining the precise moment of an event in high-speed video.

[0059] By integrating the dual-light-path system and outputting through a single photosensitive element 12, the structure is more compact, has fewer potential points of failure, and the overall reliability of the system is higher compared to a dual-camera system.

[0060] Example 2

[0061] like Figures 1 to 12 As shown, this embodiment, based on the core optical structure described in Embodiment 1, further defines the specific mechanical structure of the device, the component connection method, and the implementation details of the adjustment mechanism, aiming to improve the structural stability, adjustment range, and ease of operation of the device.

[0062] In this embodiment, the rotating frame 1, which serves as the core supporting component, has a V-shaped cross-section when viewed horizontally. The opening of this V-shape faces the rear end where the photosensitive device 12 is mounted. This V-shaped design not only provides good structural rigidity to support the lens and light guide assembly, but also effectively utilizes space, providing a sufficiently unobstructed path for the light converging from lens 5 and lens 6 to the central photosensitive device 12, and may provide space for internal wiring or other components.

[0063] Adjusting rods 13, securely connected to the rear ends (the ends with spherical structures) of light guide lenses 10 and 11, are used to transmit adjustment actions. In this embodiment, each adjusting rod 13 extends from its connection point toward the rear of the device, following a defined path: it first passes through a pre-drilled hole in the light guide slide plate 16, then continues rearward through a corresponding through hole in the main structural component of the device—the body 14, and finally through a through hole in the housing 15 fixed to the rear end of the body 14. Thus, the ends of the adjusting rods 13 are exposed outside the housing 15 or connected to a precision adjustment device (such as a fine-tuning screw) mounted on the housing 15, facilitating user operation.

[0064] To support and guide the adjustment movement of the light guide lenses 10 and 11, two independent light guide slide plates 16 are provided. Each light guide slide plate 16 is structurally robust, with its outermost end (the one furthest from the other) firmly fixed to the body 14, forming a stable support base. The innermost end (the one closest to the other) of each light guide slide plate 16 is precisely machined into a concave spherical structure. This concave spherical surface precisely matches the convex spherical structure at the rear end of the corresponding light guide lens 10 or 11 (i.e., the connection point of the adjusting rod 13), forming a spherical sliding pair. When the adjusting rod 13 moves, the spherical rear ends of the light guide lenses 10 and 11 slide smoothly on the concave spherical surface of the light guide slide plate 16, simultaneously achieving support and guidance.

[0065] To ensure that the adjusting rod 13 can move freely without interference when the light guide lenses 10 and 11 deflect at angles, the diameters of the through holes that the adjusting rod 13 passes through in sequence on the light guide slide plate 16, the body 14, and the housing 15 are all designed to be significantly larger than the outer diameter of the adjusting rod 13 itself, leaving sufficient clearance. Furthermore, the diameters of these three through holes increase sequentially: the diameter of the through hole on the light guide slide plate 16 is the smallest (but still larger than the rod diameter), the diameter of the through hole on the body 14 is the second largest, and the diameter of the through hole on the housing 15 is the largest. This gradually increasing hole diameter design is to accommodate the angle changes of the adjusting rod 13 relative to these fixed planes (slide plate, body, housing) when it makes large-angle deflections, ensuring that there will be no scraping or jamming even at the extreme adjustment positions.

[0066] Furthermore, in the overall assembly, the central axis of the rotating ring 2 (which supports the rotating frame 1 and is rotatably connected to the body 14) is ensured to be perpendicular to the main line connecting the body 14 and the casing 15 (usually the longitudinal axis of the equipment). This ensures the consistency and stability of the equipment's movement during horizontal scanning adjustments.

[0067] Work process:

[0068] Adjustment preparation: After the equipment is aligned with the target as in Example 1, the operator makes fine adjustments by using the end of the adjustment rod 13 extending from the rear of the chassis 15 or the connected adjustment mechanism.

[0069] Adjustment execution: When the operator pushes, pulls or rotates the adjustment lever 13, the force is transmitted to the light guide lens 10 or 11.

[0070] Guiding and Supporting: Under the action of force, the light guide lenses 10 and 11 slide on the concave spherical surface of the precisely matched light guide slide plate 16, with the spherical surface at their rear end as the support point, while rotating around the center of the spherical heads 8 and 9 (refer to Embodiment 1). The light guide slide plate 16 provides stable support, ensuring smooth and precise movement.

[0071] Free travel guarantee: Throughout the adjustment process, the adjusting rod 13 moves freely within the through holes of the light guide slide plate 16, the main body 14, and the housing 15. Because the diameter of the through holes is sufficiently large and increases sequentially, even with a large adjustment angle, the adjusting rod 13 will not interfere with the hole walls, ensuring smooth adjustment and the maximum achievable adjustment range. The V-shaped rotating frame 1 structure also provides the necessary internal space for adjustment.

[0072] Achieving light path deflection: By changing the angles of the light guide lenses 10 and 11, their wedge-shaped structure (refer to Embodiment 1) precisely changes the deflection angle of the light, ultimately accurately projecting the images from lens 5 and lens 6 onto the designated area of ​​the photosensitive device 12.

[0073] When in use, fix the body 14 and the case 15 to the tripod or other support. After adjusting the installation position, rotate the lens 1 5 and the lens 2 6 respectively, and point the lens 1 5 and the lens 2 6 at different objects to be photographed. For example, point the lens 1 5 at the standard microsecond and the lens 2 6 at the object whose time needs to be measured.

[0074] Then, by adjusting lever 13, light guide lens 10 and light guide lens 11 are adjusted independently to ensure that the light from lens 5 and lens 6 converges onto photosensitive device 12, and that the projections of the light from lens 5 and lens 6 onto photosensitive device 12 each occupy half of photosensitive device 12. Measurement can then begin. During measurement, photosensitive device 12 simultaneously records the content from lens 5 and lens 6, enabling the simultaneous recording of content from different directions through a single photosensitive element. This allows for visual observation of start and stop markers, significantly reducing the uncertainty of trigger time during time interval measurement and improving the traceability accuracy of the time interval measurement equipment. Recording through a single photosensitive device 12 effectively reduces synchronization differences between different cameras caused by using multiple cameras, and the acquisition of images from two different directions through a single photosensitive device 12 effectively improves traceability reliability.

[0075] By setting a light guide slide plate 16 fixed on the body 14, and precisely matching its inner concave spherical surface with the convex spherical surface of the light guide lenses 10 and 11, a stable and reliable support and smooth guidance are provided for the adjustment movement, effectively suppressing jitter and misalignment during the adjustment process, and improving the stability and adjustment accuracy of the optical path pointing.

[0076] The diameter of the through holes on the light guide lens slide plate 16, body 14, and housing 15 through which the adjusting rod 13 passes is larger than the rod diameter and increases sequentially. This design provides sufficient movement space for the adjusting rod 13 when it deflects at a large angle, avoids mechanical interference, and thus significantly increases the adjustable angle range of the light guide lenses 10 and 11, enhancing the adaptability of the equipment to targets with different distances and layouts.

[0077] The rotating frame 1 adopts a V-shaped cross-section structure, which may optimize the weight distribution and provide a better spatial layout for internal optical paths and components while ensuring sufficient structural rigidity.

[0078] The design of the adjustment rod 13, which runs through the light guide mirror slide plate 16, the body 14, and the housing 15, leads the adjustment operation end to the rear of the equipment, making it convenient for users to operate centrally, and also provides better protection for the adjustment rod.

[0079] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A time interval measurement device based on a high speed video grabber, characterized in that, The utility model provides a kind of camera, including rotating frame (1), the rotating ring (2) is fixedly connected with the outer end of rotating frame (1), ball hinge is connected with the ball ring one (3) and ball ring two (4) of left and right symmetry arrangement on rotating frame (1), ball ring one (3) and ball ring two (4) are respectively screw-connected with lens one (5) and lens two (6), the light guide frame (7) is fixedly connected with the one end of rotating frame (1) away from lens one (5) and lens two (6), the both sides of light guide frame (7) are respectively ball hinge with ball head one (8) and ball head two (9) in ball ring one (3) and ball ring two (4) corresponding position, the one end of ball head one (8) and ball head two (9) away from light guide frame (7) is respectively fixedly connected with light guide lens one (10) and light guide lens two (11), the side of light guide frame (7) away from rotating frame (1) is equipped with photosensitive device (12), the one end of light guide lens one (10) and light guide lens two (11) away from light guide frame (7) is all fixedly connected with adjusting rod (13), the outer side of rotating ring (2) is rotatably connected with organism (14), the one end of organism (14) away from rotating frame (1) is fixedly connected with machine box (15), the one end of light guide lens one (10) and light guide lens two (11) away from light guide frame (7) is all ball hinge with light guide mirror sliding plate (16).

2. The time interval measurement device based on high-speed video capture according to claim 1, wherein: The cross section of the rotating frame (1) along the horizontal direction is V-shaped structure, and the opening part of the V-shaped structure is arranged towards the direction of the photosensitive device (12).

3. The time interval measurement device based on high-speed video capture according to claim 1, wherein: The outer end of the ball ring one (3) and the ball ring two (4) is spherical structure, and the lens one (5) and the lens two (6) are lenses with automatic focusing function.

4. The time interval measurement device based on high-speed video capture according to claim 1, wherein: The connecting line between the ball head one (8) and the ball head two (9) passes through the axis of the rotating frame (1), and the one end of the light guide lens one (10) and the light guide lens two (11) away from each other is spherical structure.

5. The time interval measurement device based on high-speed video capture according to claim 1, wherein: The one end of the adjusting rod (13) fixedly connected with the light guide lens one (10) and the light guide lens two (11) away from the light guide frame (7) penetrates the light guide mirror sliding plate (16), the organism (14) and the machine box (15) in sequence.

6. The time interval measurement device based on high-speed video capture according to claim 1, wherein: The cross section of the light guide lens one (10) and the light guide lens two (11) along the horizontal direction is wedge-shaped structure, which is used for deflecting the light of the lens one (5) and the lens two (6), and the tip of the wedge-shaped structure is arranged towards the direction close to the light guide frame (7), and the outer end of the rotating ring (2) is rotatably connected with the organism (14).

7. The time interval measurement device based on high-speed video capture according to claim 1, wherein: The axis direction of the rotating ring (2) is parallel to the connecting line direction of the organism (14) and the machine box (15), the through holes are arranged in the corresponding positions of the light guide mirror sliding plate (16), the organism (14) and the machine box (15) and the adjusting rod (13), and the diameters of the through holes are all greater than the outer diameter of the adjusting rod (13), and the diameters of the through holes on the light guide mirror sliding plate (16), the organism (14) and the machine box (15) increase in sequence.

8. The time interval measurement device based on high-speed video capture according to claim 1, wherein: The one end of the two light guide mirror sliding plates (16) away from each other is fixedly connected with the organism (14), and the one end of the two light guide mirror sliding plates (16) close to each other is spherical structure matched with the corresponding light guide lens one (10) and light guide lens two (11).

9. The time interval measurement device based on high-speed video capture according to claim 1, wherein: The spherical centers of the spherical surface structure of the light guide lens one (10) and the light guide lens two (11) far from the light guide frame (7) one end respectively coincide with the spherical centers of the ball head one (8) and the ball head two (9).

Images