Multifunctional measuring positioning rod for restoring video at accident scene
The design of the multi-functional measurement and positioning rod for accident scene video reconstruction solves the problems of limited calibration accuracy and lack of dynamic data in vehicle accident identification, achieving high-precision accident reconstruction and video restoration, and enhancing the legal validity of the identification conclusion.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SOUTHERN MEDICAL UNIVERSITY
- Filing Date
- 2025-06-04
- Publication Date
- 2026-06-09
AI Technical Summary
Existing technologies for vehicle accident identification suffer from limitations in calibration accuracy, lack of dynamic data, and inconvenience in on-site operation, resulting in significant deviations between accident reconstruction models and real-world scenarios, which affects the legal validity of the identification conclusions.
The multi-functional measurement and positioning rod, which uses accident scene video reconstruction, includes a calibration chassis, a calibration rod, and a positioning mechanism. Through the combination of rolling wheels, calibration grids, and positioning mechanism, it achieves continuous calibration and dynamic simulation of vehicle positions, avoiding scene interference.
It improves calibration accuracy and efficiency, ensures the continuity of dynamic data and the accuracy of the calibration process, avoids inconvenience in on-site operation and scene interference, and enhances the accuracy of accident reconstruction models.
Smart Images
Figure CN224340951U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of accident identification equipment technology, and in particular to a multi-functional measuring and positioning rod for accident scene video reconstruction. Background Technology
[0002] Accident investigation is a scientific activity that uses professional theories and technical means to systematically analyze the causal chain, dynamic process, damage consequences, and liability attribution of traffic accidents. Its core value lies in providing objective evidence for judicial decisions, insurance claims, and accident prevention through the construction of a multi-dimensional chain of evidence. This process relies on three major technical pillars: on-site investigation (such as 3D laser scanning and aerial modeling), physical evidence analysis (physical and chemical testing of vehicle fragments and comparison of tire tracks), and technical simulation (reconstruction of multibody dynamics models) to achieve quantitative assessment of key elements such as vehicle trajectory, collision mechanics mechanisms, and driver behavior. Based on the differences in the objects and objectives of the investigation, accident investigation can be subdivided into six categories: forensic (analysis of the causes of injury and death), physical evidence (tracing the source of trace evidence), vehicle (mechanical state and collision parameter inversion), road (compliance assessment of road conditions and traffic facilities), accident causation (attribution of multiple factors), and property damage (calculation of direct / indirect economic losses). Among these, vehicle investigation is the area with the most technical challenges due to its involvement in complex dynamic reconstruction.
[0003] In vehicle identification, high-precision calibration technology is needed to reconstruct the spatial attitude (pitch angle, roll angle), structural deformation (A-pillar curvature, longitudinal beam collapse), and collision energy distribution (peak stress in the energy-absorbing zone) of the accident vehicle. Traditional methods rely on benchmark marking and manual measurement, which has significant drawbacks.
[0004] Calibration accuracy is limited: rigid benchmarks are difficult to adapt to the curved surface features of the vehicle body, resulting in large positioning errors at key points (such as the joints of the anti-collision beams and the deformation nodes of the roof), which affects the collision angle inversion.
[0005] Missing dynamic data: Existing technology cannot continuously calibrate the vehicle's motion process (such as rolling and sliding), resulting in broken motion trajectories between frames during video reconstruction;
[0006] Inconvenient on-site operation: Existing methods mostly involve returning the accident vehicle to the accident scene for reconstruction. This method has many practical difficulties, including factors such as on-site control and control of the accident vehicle's driving trajectory.
[0007] Severe scene interference: Open-air operations are affected by lighting and traffic flow, manual calibration is time-consuming, and operations occupying roads easily lead to secondary accident risks. These problems directly cause the accident reconstruction model to deviate significantly from the actual scene, seriously weakening the legal validity of the appraisal conclusion.
[0008] Therefore, this utility model proposes a multi-functional measuring and positioning rod for accident scene video reconstruction to solve the above-mentioned problems existing in existing monitoring equipment. Utility Model Content
[0009] In view of this, the main purpose of this utility model is to provide a multi-functional measurement and positioning rod for accident scene video reconstruction, so as to solve the problems of limited calibration accuracy, lack of dynamic data, inconvenience of on-site operation and serious scene interference in existing reconstruction methods.
[0010] To achieve the above objectives, the basic concept of the technical solution adopted by this utility model is as follows:
[0011] A multi-functional measuring and positioning rod for accident scene video reconstruction includes a calibration chassis, a calibration rod, and a positioning mechanism;
[0012] The calibration chassis is equipped with rolling wheels at the bottom and a calibration grid is provided on the calibration chassis;
[0013] The calibration rod is movably mounted on the upper side of the calibration chassis via a calibration grid;
[0014] The positioning mechanism is movably mounted at the four corners of the calibration chassis.
[0015] In a preferred embodiment, the calibration grid is formed by a combination of trapezoidal grooves formed on the upper side of the calibration chassis. The trapezoidal grooves include intersecting transverse grooves and longitudinal grooves, and a notch is provided at the edge of the calibration grid to match the calibration rod.
[0016] In a preferred embodiment, the calibration chassis is equipped with traction connectors at both ends near the front of the vehicle and the parking space.
[0017] In a preferred embodiment, the calibration rod includes a bottom sleeve, a first telescopic sleeve, a second telescopic sleeve, and a reflective calibration plate;
[0018] The bottom sleeve is a cylindrical structure with a limiting plate at the lower end, and the limiting plate matches the groove of the calibration grid.
[0019] The first telescopic sleeve is set inside the bottom sleeve by a height limiting component;
[0020] The second telescopic sleeve is set inside the first telescopic sleeve via a height limiting component;
[0021] The reflective marking plate is detachably mounted on the upper end of the second telescopic sleeve.
[0022] In a preferred embodiment, the lower end of the bottom sleeve is provided with a threaded section, which is threadedly connected to the clamping and limiting member.
[0023] In a preferred embodiment, a circular insert is provided at the middle of the upper end of the second telescopic sleeve, and the insert matches the slot at the lower end of the reflective marking plate.
[0024] In a preferred embodiment, the height limiting component includes a locking member, which is rotatably mounted on the outer surfaces of the bottom sleeve and the first telescopic sleeve via a rotating shaft, and is provided with a one-way locking tooth, which matches a locking groove provided on the outer surfaces of the first telescopic sleeve and the second telescopic sleeve.
[0025] In a preferred embodiment, the positioning mechanism includes a threaded adjusting rod and a support plate;
[0026] An adjustment plate is provided at the upper end of the threaded adjustment rod, and an eccentric adjustment handle is provided on the adjustment plate. The threaded adjustment rod is also threadedly connected to the calibration base, and a spherical locking block is provided at the lower end of the threaded adjustment rod.
[0027] The support plate is rotatably mounted at the lower end of the threaded adjusting rod and matches the spherical locking block.
[0028] In a preferred embodiment, the support plate is further provided with a connecting cylinder, and the connecting cylinder is provided with a threaded connector that matches the spherical block.
[0029] In a preferred embodiment, the roller is disposed at the bottom of the calibration chassis; and a spirit level is also disposed on the calibration chassis.
[0030] Compared with the prior art, this utility model provides a multi-functional measuring and positioning rod for accident scene video reconstruction, which has the following beneficial effects:
[0031] 1. This device, through the setting of a calibration chassis, calibration rod and positioning mechanism, can simulate the chassis of an accident vehicle during use, dynamically or statically calibrate the calibration points, form continuous data, facilitate the reconstruction of accident videos, and improve calibration accuracy and efficiency.
[0032] 2. By setting the calibration grid, it is convenient to continuously calibrate the calibrated points at different positions on the calibration chassis, which can effectively avoid the problem of missing calibrated points, avoid the loss of dynamic data, and ensure the accuracy of calibration.
[0033] 3. By using the calibration rod in conjunction with the calibration grid, the adaptability of different calibration points in terms of position and height is effectively ensured during the calibration process. This also facilitates calibration in the laboratory, avoiding the problem of severe scene interference. It solves the problems of limited calibration accuracy, lack of dynamic data, inconvenient on-site operation, and severe scene interference inherent in existing restoration methods.
[0034] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description
[0035] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0036] Figure 1 This is a structural schematic diagram of the multi-functional measuring and positioning rod for accident scene video reconstruction according to this utility model;
[0037] Figure 2 This is a schematic diagram of the calibration rod of this utility model;
[0038] Figure 3 This utility model Figure 2 A magnified view of a section at point A in the middle;
[0039] Figure 4 This is a schematic diagram of the structure of the second telescopic sleeve of this utility model;
[0040] Figure 5 This is a schematic diagram of the positioning mechanism of this utility model.
[0041] [Explanation of Key Component Symbols]
[0042] 1. Calibration chassis; 2. Calibration rod; 21. Bottom sleeve; 22. First telescopic sleeve; 23. Second telescopic sleeve; 231. Insert rod; 24. Reflective calibrating plate; 25. Limiting plate; 26. Pressing limiting component; 27. Locking groove; 28. Locking component; 281. One-way locking tooth; 29. Rotating shaft; 3. Rolling wheel; 4. Positioning mechanism; 41. Threaded adjusting rod; 42. Adjusting plate; 43. Eccentric adjusting handle; 44. Spherical block; 45. Threaded connector; 46. Support plate; 47. Connecting cylinder; 5. Traction connector; 6. Spirit bubble; 7. Calibration grid; 71. Insert. Detailed Implementation
[0043] The structure of the multi-functional measuring and positioning rod for accident scene video reconstruction will be further described in detail below with reference to the accompanying drawings and embodiments of this utility model.
[0044] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0045] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments as described in this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0046] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.
[0047] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.
[0048] The following is combined Figures 1 to 5 This invention describes a multi-functional measuring and positioning rod for accident scene video reconstruction.
[0049] A multi-functional measuring and positioning rod for accident scene video reconstruction includes a calibration chassis 1, a calibration rod 2, and a positioning mechanism 4. The calibration chassis 1 is a movable chassis with rolling wheels 3 at its bottom, and a calibration grid 7 is provided on the calibration chassis 1. The calibration rod 2 is movably mounted on the upper side of the calibration chassis 1 through the calibration grid 7, and is used to calibrate points on the vehicle. The positioning mechanism 4 is movably mounted at the four corners of the calibration chassis 1, and is used to position the calibration chassis 1 during use, while simultaneously simulating the chassis height of the accident vehicle.
[0050] In the above description, during use, the calibration chassis 1 is used to simulate the chassis of the accident vehicle; by adjusting the position and height of the calibration rod 2 on the calibration grille 7, the different position points of the accident vehicle are calibrated to form continuous data of the different position points of the vehicle, which facilitates accident calibration and reconstruction; the rolling wheels 3 facilitate the movement of the calibration chassis 1, which facilitates dynamic simulation and movement of the device; the positioning mechanism 4 facilitates the positioning of the calibration chassis 1, which facilitates static point calibration, and at the same time, the height of the accident vehicle chassis ensures the accuracy of the simulation results.
[0051] In a preferred embodiment, such as Figure 1 As shown, the calibration grid 7 is formed by a combination of trapezoidal grooves formed on the upper side of the calibration chassis 1, and the trapezoidal grooves include intersecting transverse grooves and longitudinal grooves, and a slot 71 is provided at the edge of the calibration grid 7 to communicate with the calibration grid 7.
[0052] In the above description, the transverse and longitudinal sliding grooves facilitate the sliding of the calibration rod 2 within the calibration grid 7, thereby achieving continuous calibration of different positions on the vehicle. Simultaneously, the slot 71 facilitates the installation and removal of the calibration rod 2, making the device easy to transport. In a preferred embodiment, as... Figure 1 As shown, the calibration chassis 1 is equipped with traction connectors 5 at both ends near the front of the vehicle and the parking space. The traction connectors 5 are connected to external traction equipment, which facilitates the movement of this device and the realization of dynamic calibration simulation of the vehicle.
[0053] In a preferred embodiment, such as Figure 1 As shown, the calibration base 1 is also provided with a level bubble 6, which is convenient to use the level bubble 6 to level the calibration base 1 when adjusting the height of the calibration base 1.
[0054] In a preferred embodiment, such as Figure 1 As shown, the calibration chassis 1 is also equipped with horizontal and vertical length scales, which facilitates the accurate determination of the coordinates of the points to be calibrated during use, further improving the calibration accuracy of the device.
[0055] In a preferred embodiment, such as Figure 2 , Figure 3 and Figure 4 As shown, the calibration rod 2 includes a bottom sleeve 21, a first telescopic sleeve 22, a second telescopic sleeve 23, and a reflective calibration plate 24; wherein: the bottom sleeve 21 is a cylindrical structure with a limiting disk 25 at its lower end, the limiting disk 25 is used in conjunction with the sliding groove of the calibration grid 7, is engaged in the sliding groove and slides along the sliding groove; the first telescopic sleeve 22 is movably installed in the bottom sleeve 21 through a height limiting component, and moves along the length direction of the bottom sleeve 21; the second telescopic sleeve 23 is movably installed in the first telescopic sleeve 22 through a height limiting component, and moves along the length direction of the first telescopic sleeve 22; the reflective calibration plate 24 is detachably installed at the upper end of the second telescopic sleeve 23 for point calibration during the calibration process.
[0056] In the above description, during use, the bottom sleeve 21 can slide along the surface of the calibration chassis 1 through the limiting action of the limiting plate 25, so that it reaches the position of the point to be calibrated. The height of the calibration rod 2 can be adjusted by the first telescopic sleeve 22 and the second telescopic sleeve 23, so that the reflective calibration plate 24 can be used to calibrate the vehicle position.
[0057] Specifically, such as Figure 2 As shown, the lower end of the bottom sleeve 21 is also provided with a threaded section that is threadedly connected to the clamping and limiting member 26. In use, the position of the bottom sleeve 21 on the calibration grid 7 is fixed by tightening the clamping and limiting member 26.
[0058] Specifically, such as Figure 4 As shown, a circular insert rod 231 is also provided at the upper middle part of the second telescopic sleeve 23. The insert rod 231 is used in conjunction with the slot provided at the lower end of the reflective marking plate 24, so as to facilitate the rotation of the reflective marking plate 24 during use and to facilitate the marking of the position in different directions.
[0059] Specifically, such as Figure 3 As shown, the height limiting component includes a locking member 28, which is rotatably mounted on the outer side of the bottom sleeve 21 and the first telescopic sleeve 22 via a rotating shaft 29. It works in conjunction with the movable slots provided on the bottom sleeve 21 and the first telescopic sleeve 22 and moves along the movable slots. The locking member 28 is also provided with a one-way locking tooth 281, which works in conjunction with the locking grooves 27 provided on the outer surfaces of the first telescopic sleeve 22 and the second telescopic sleeve 23.
[0060] In the above description, during use, the lower locking end of the locking member 28 always points downward under the action of gravity, thereby keeping the one-way locking tooth 281 always locked in the locking groove 27. When it is necessary to adjust the overall height of the calibration rod 2, by pulling the first telescopic sleeve 22 and / or the second telescopic sleeve 23 upward, the one-way locking tooth 281 and the locking groove 27 can slide relative to each other without locking, so as to facilitate the adjustment of the overall height of the calibration rod 2. After adjustment, due to the action of gravity, the one-way locking tooth 281 and the locking groove 27 lock relative to each other, thus completing the locking of the overall height of the calibration rod 2. This makes it easy to lock the overall height of the calibration rod 2 during adjustment. At the same time, when it is necessary to shorten the height of the calibration rod 2, pressing the upper pressing end of the locking member 28 will move the one-way locking tooth 281 away from the locking groove 27, thereby facilitating the adjustment of the height of the calibration rod 2.
[0061] In a preferred embodiment, such as Figure 1 and Figure 5 As shown, the positioning mechanism 4 includes a threaded adjusting rod 41 and a support plate 46. An adjusting disc 42 is provided at the upper end of the threaded adjusting rod 41, and an eccentric adjusting handle 43 is provided on the adjusting disc 42. The eccentric adjusting handle 43 can drive the threaded adjusting rod 41 to rotate. The threaded adjusting rod 41 is threadedly connected to the calibration base 1, and a spherical locking block 44 is provided at the lower end of the threaded adjusting rod 41. The spherical locking block 44 matches the internal cavity of the connecting cylinder 47 provided on the support plate 46, which is used to realize the rotational connection between the threaded adjusting rod 41 and the support plate 46. A threaded connector 45 is also provided on the connecting cylinder 47 to match the spherical locking block 44, which facilitates the limiting of the spherical locking block 44 after installation.
[0062] The working principle of the multi-functional measuring and positioning rod for accident scene video reconstruction described in this utility model includes:
[0063] During calibration, the device is first moved to the position to be calibrated and simulated under the traction of the traction equipment. Then, the device is fixed by adjusting the positioning mechanism 4. Then, according to the coordinates of the deformation points on the vehicle collected, the position of the calibration rod 2 is moved in conjunction with the horizontal and vertical length scales on the calibration chassis 1. After moving to the corresponding position, the height of the calibration rod 2 is adjusted according to the height of the measured point so that the center of the reflective calibration plate 24 is located at the calibration point. Calibration and data recording are then performed to facilitate the use of large model modeling and video reconstruction for accident situation judgment.
[0064] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model.
Claims
1. A multi-functional measuring and positioning rod for accident scene video reconstruction, characterized in that: It includes a calibration chassis (1), a calibration rod (2), and a positioning mechanism (4); The calibration chassis (1) is provided with a rolling wheel (3) at the bottom and a calibration grid (7) is provided on the calibration chassis (1). The calibration rod (2) is movably mounted on the upper side of the calibration chassis (1) via the calibration grid (7); The positioning mechanism (4) is movably mounted at the four corners of the calibration chassis (1); The calibration rod (2) includes a bottom sleeve (21), a first telescopic sleeve (22), a second telescopic sleeve (23), and a reflective calibration plate (24). The bottom sleeve (21) is a cylindrical structure with a limiting plate (25) at the lower end, and the limiting plate (25) matches the groove of the calibration grid (7); The first telescopic sleeve (22) is set inside the bottom sleeve (21) by a height limiting component; The second telescopic sleeve (23) is set inside the first telescopic sleeve (22) by a height limiting component; The reflective marking plate (24) is detachably mounted on the upper end of the second telescopic sleeve (23).
2. The multi-functional measuring and positioning rod for accident scene video reconstruction as described in claim 1, characterized in that: The calibration grid (7) is formed by a combination of trapezoidal grooves opened on the upper side of the calibration chassis (1). The trapezoidal grooves include intersecting transverse grooves and longitudinal grooves, and a slot (71) is provided at the edge of the calibration grid (7) to match the calibration rod (2).
3. The multi-functional measuring and positioning rod for accident scene video reconstruction as described in claim 1, characterized in that: The calibration chassis (1) is equipped with traction connectors (5) at both ends near the front of the vehicle and the parking space.
4. The multi-functional measuring and positioning rod for accident scene video reconstruction as described in claim 1, characterized in that: The lower end of the bottom sleeve (21) is provided with a threaded section, which is threadedly connected to the clamping and limiting member (26).
5. The multi-functional measuring and positioning rod for accident scene video reconstruction as described in claim 1, characterized in that: The upper middle part of the second telescopic sleeve (23) is provided with a circular insert (231), which matches the slot at the lower end of the reflective marking plate (24).
6. The multi-functional measuring and positioning rod for accident scene video reconstruction as described in claim 1, characterized in that: The height limiting component includes a locking member (28), which is rotatably mounted on the outer side of the bottom sleeve (21) and the first telescopic sleeve (22) via a rotating shaft (29), and is provided with a one-way locking tooth (281) on the locking member (28), which matches the locking groove (27) provided on the outer surface of the first telescopic sleeve (22) and the second telescopic sleeve (23).
7. The multi-functional measuring and positioning rod for accident scene video reconstruction as described in claim 1, characterized in that: The positioning mechanism (4) includes a threaded adjusting rod (41) and a support plate (46). The upper end of the threaded adjusting rod (41) is provided with an adjusting plate (42), and the adjusting plate (42) is provided with an eccentric adjusting handle (43). The threaded adjusting rod (41) is also threadedly connected to the calibration base (1), and a spherical locking block (44) is provided at the lower end of the threaded adjusting rod (41). The support plate (46) is rotatably mounted at the lower end of the threaded adjusting rod (41) and matches the spherical locking block (44).
8. The multi-functional measuring and positioning rod for accident scene video reconstruction as described in claim 7, characterized in that: The support plate (46) is also provided with a connecting cylinder (47), and the connecting cylinder (47) is provided with a threaded connector (45) that matches the spherical block (44).
9. The multi-functional measuring and positioning rod for accident scene video reconstruction as described in claim 1, characterized in that: The rolling wheel (3) is located at the bottom of the calibration chassis (1); and a level (6) is also provided on the calibration chassis (1).