Auxiliary device for parallelism of vision measurement camera and target

Abstract

The utility model relates to an auxiliary device for parallelism of a vision measurement camera and a target. The auxiliary device comprises laser parallelism detection equipment, a telescopic auxiliary sighting telescope, a clamping mechanism and a display module. The laser parallel detection equipment is provided with a front area, two sliding rails are arranged on the outer wall of the front area along the diagonal line, at least two high-precision laser distance detection units are arranged in the sliding rails in a sliding mode, each unit has an independent operation function, and the high-precision laser distance detection units can move in the length direction of the sliding rails. The telescopic auxiliary sighting telescope is arranged at the top of the laser parallel detection equipment; the clamping mechanism is arranged at the bottom of the laser parallel detection equipment and comprises an adjustable clamping device, and the adjustable clamping device is used for clamping a vision measurement camera; the display module is in data connection with the laser parallel detection equipment, and the display module is used for displaying detection numerical values of the high-precision laser distance detection units. The auxiliary device for enabling the vision measurement camera to be parallel to the target can improve the measurement efficiency and precision.

Description

Technical Field

[0001] The present application relates to the field of visual measurement technology, and in particular to an auxiliary device for making a visual measurement camera parallel to a target. Background Art

[0002] Among the many structural health monitoring technologies, high-precision outdoor visual measurement is being widely used in engineering surveying, building deformation monitoring, and geographic information system (GIS) data collection due to its non-contact, efficient, and reliable nature. The core of this technology is to assess the health of a structure by accurately measuring its geometric changes. The accuracy of this measurement directly determines the reliability of the monitoring results.

[0003] The outdoor visual measurement technology in related technologies still has the following significant defects in practical applications: 1. Low measurement efficiency: Before each measurement, a lot of time is required to adjust the parallelism of the camera and the target, which seriously affects work efficiency. 2. The parallelism of the camera and the target is difficult to ensure: Ensuring that the measuring camera and the target remain parallel is the key to obtaining accurate measurement data, but traditional methods rely on the operator's experience and visual judgment, which is prone to human errors. 3. Insufficient portability of equipment: Existing auxiliary equipment is usually large in size and complex in structure, which is not convenient for carrying and rapid deployment during field operations. 4. Poor versatility: Many auxiliary equipment are only suitable for specific models of cameras or targets and lack wide applicability. Utility Model Content

[0004] An embodiment of the present application provides an auxiliary device for paralleling a visual measurement camera with a target. The auxiliary device for paralleling a visual measurement camera with a target is smaller in size and has better portability. It can also quickly and accurately adjust the relative position between the visual measurement camera and the target, thereby improving measurement efficiency and accuracy.

[0005] The auxiliary device for making the visual measurement camera parallel to the target provided in the embodiment of the present application includes:

[0006] A laser parallelism detection device, the laser parallelism detection device having a front area, the outer wall of the front area being provided with two slide rails along a diagonal line, at least two high-precision laser distance detection units being slidably provided within the slide rails, the high-precision laser distance detection units being movable along the length direction of the slide rails;

[0007] A telescopic auxiliary sight, the telescopic auxiliary sight is arranged on the top of the laser parallel detection device;

[0008] A clamping mechanism, the clamping mechanism being arranged at the bottom of the laser parallel detection device, the clamping mechanism comprising an adjustable clamper, the adjustable clamper being used to clamp a visual measurement camera;

[0009] A display module is connected to the laser parallel detection device in data communication, and is used to display the detection values ​​of the plurality of high-precision laser distance detection units.

[0010] In addition, the auxiliary device for paralleling the visual measurement camera and the target provided in the embodiment of the present application may also have the following additional technical features:

[0011] In an optional solution, the laser parallel detection device further has a rear area, in which a temperature compensation device and an illumination compensation device are arranged, and a temperature sensor and an illumination sensor are arranged on the side wall of the rear area, the temperature sensor is data-connected to the temperature compensation device, and the illumination sensor is data-connected to the illumination compensation device; the temperature compensation device and the illumination compensation device are data-connected to the display module, and are used to correct the influence of temperature and illumination changes on measurement.

[0012] In an optional solution, the clamping mechanism further includes a quick-release plate seat, a coarse adjustment knob, and a fine adjustment knob;

[0013] The quick-release plate seat connects the laser parallel detection device and the adjustable clamp, and the coarse adjustment knob and the fine adjustment knob can adjust the clamping arm spacing of the adjustable clamp to adjust the clamping range and clamping force of the adjustable clamp.

[0014] In an optional solution, the coarse adjustment knob is connected to the adjustable clamp through a spiral adjustment mechanism, and the clamping range that the coarse adjustment knob can adjust is 50 to 200 mm; the fine adjustment knob is connected to the adjustable clamp through a gear fine adjustment mechanism, and when the fine adjustment knob rotates one circle, the clamping arm of the adjustable clamp moves relative to each other by 0.5 mm.

[0015] In an optional solution, the adjustable clamp is provided with anti-slip silicone pads on opposite sides of the clamping arm, and at least one of the adjustable clamp and the quick-release plate seat is made of a lightweight high-strength alloy.

[0016] In an optional solution, a U-shaped buckle is provided on the top of the laser parallel detection device, and the telescopic auxiliary sight is detachably connected to the laser parallel detection device through the U-shaped buckle; the telescopic auxiliary sight includes a zoom optical lens, and the focal length adjustment range of the zoom optical lens is 24 to 200 mm.

[0017] In an optional solution, the slide rail is a dovetail groove slide rail, the base of the high-precision laser distance detection unit is a dovetail tenon structure, and the dovetail tenon structure is movably clamped in the dovetail groove slide rail.

[0018] In an optional solution, the display module includes a computer or a mobile device, and the laser parallel detection device is connected to the display module via a data line to transmit and display real-time data.

[0019] The beneficial effects of the embodiments of the present application are:

[0020] The overall structure of the auxiliary device for paralleling the visual measurement camera and the target is small, lighter and easier to carry. During operation, it can quickly and accurately adjust the parallelism of the camera and the target through the cooperation of a high-precision laser distance detection unit and a telescopic auxiliary sight. Multiple high-precision laser distance detection units can move relative to each other to better adapt to the needs of parallelism adjustment for targets of different sizes, greatly reducing human errors and improving measurement efficiency and accuracy.

[0021] It should be understood that the foregoing general description and the following detailed description are merely illustrative and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the overall structure of the auxiliary device provided in this application in a specific embodiment;

[0023] Figure 2 for Figure 1 Schematic diagram of the structure of the laser parallel detection equipment;

[0024] Figure 3 A schematic structural diagram of a telescopic auxiliary sight provided in this application in a specific embodiment;

[0025] Figure 4 This is a schematic structural diagram of the clamping mechanism provided in this application in a specific embodiment.

[0026] Figure numerals: laser parallel detection device 1, front area 11, slide rail 12, high-precision laser distance detection unit 13, rear area 14, temperature sensor 15, illumination sensor 16, U-shaped buckle 17, data cable 18, telescopic auxiliary sight 2, zoom optical lens 21, clamping mechanism 3, adjustable clamp 31, quick-release plate base 32, coarse adjustment knob 33, fine adjustment knob 34, anti-slip silicone pad 35.

[0027] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application. DETAILED DESCRIPTION

[0028] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0029] It should be clear that the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0030] The terms used in the embodiments of the present application are for the purpose of describing specific embodiments only and are not intended to limit the present application. The singular forms "a", "an", "the" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise.

[0031] It should be understood that the term "and / or" as used herein is merely a description of the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0032] It should be noted that the directional words such as "upper", "lower", "left", and "right" described in the embodiments of the present application are described based on the angles shown in the accompanying drawings and should not be understood as limiting the embodiments of the present application. In addition, in the context, it should be understood that when it is mentioned that an element is connected to another element "on" or "under", it can not only be directly connected to the other element "on" or "under", but also be indirectly connected to the other element "on" or "under" through an intermediate element.

[0033] Structural health monitoring plays a vital role in modern engineering. With the acceleration of urbanization and the continued expansion of infrastructure, the safety and durability of large-scale engineering structures such as bridges, high-rise buildings, and tunnels are receiving increasing attention. Effective structural health monitoring not only promptly identifies potential safety hazards but also optimizes maintenance strategies, extending the service life of structures and maximizing economic and social benefits.

[0034] Traditional vision measurement systems typically rely on complex camera calibration processes to ensure measurement accuracy. While this calibration method can achieve high accuracy in laboratory environments, it often faces numerous challenges in real-world engineering applications. In contrast, proportional calibration offers simplicity and adaptability, making it particularly suitable for field or rapid measurement scenarios. However, the accuracy of this method depends heavily on the parallelism between the camera and the target plane, and ensuring this parallelism remains a challenge in practical applications.

[0035] In this regard, the embodiments of the present application improve the defects of outdoor visual measurement technology in related technologies in practical applications. Specifically, Figure 1-4As shown, an embodiment of the present application provides an auxiliary device for paralleling a visual measurement camera with a target. The auxiliary device mainly includes a laser parallel detection device 1, a telescopic auxiliary sight 2, a clamping mechanism 3, and a display module. The laser parallel detection device 1 has a front area 11, and two slide rails 12 are provided along the diagonal of the outer wall of the front area 11. At least two high-precision laser distance detection units 13 are slidably provided in the slide rails 12. Each unit has an independent operation function, and the high-precision laser distance detection unit 13 can move along the length direction of the slide rail 12; the telescopic auxiliary sight 2 is provided at the top of the laser parallel detection device 1; the clamping mechanism 3 is provided at the bottom of the laser parallel detection device 1, and the clamping mechanism 3 includes an adjustable clamp 31, which is used to clamp the visual measurement camera; the display module is data-connected to the laser parallel detection device 1, and the display module is used to display the detection values ​​of multiple high-precision laser distance detection units 13.

[0036] In this embodiment, the overall structure of the auxiliary device for paralleling the visual measurement camera and the target is smaller, lighter, and therefore easier to carry. During operation, the parallelism between the camera and the target can be quickly and accurately adjusted through the cooperation of the high-precision laser distance detection unit 13 and the telescopic auxiliary sight 2. The multiple high-precision laser distance detection units 13 can move relative to each other to better adapt to the need for parallelism adjustment of targets of different sizes, greatly reducing human errors and improving measurement efficiency and accuracy. In addition, the auxiliary device can also overcome many limitations of existing technologies in field applications to a certain extent, providing more reliable and efficient technical support for structural health monitoring.

[0037] like Figure 1-2 As shown, in a specific embodiment, the laser parallel detection device 1 further has a rear area 14, in which a temperature compensation device and an illumination compensation device are arranged, and a temperature sensor 15 and an illumination sensor 16 are arranged on the side wall of the rear area 14, the temperature sensor 15 is data-connected to the temperature compensation device, and the illumination sensor 16 is data-connected to the illumination compensation device; the temperature compensation device and the illumination compensation device are data-connected to the display module, and are used to correct the influence of temperature and illumination changes on the measurement, the temperature sensor 15 and the illumination sensor 16 are used to monitor the temperature and illumination data of the measurement environment, and transmit the data to the corresponding temperature compensation device and illumination compensation device through the data line 18.

[0038] like Figure 4As shown, in a specific embodiment, the adjustable clamp 31 of the clamping mechanism 3 is designed with an adjustable clamping range, which can be flexibly fixed above various camera models to meet the needs of different measurement environments. In addition, the clamping mechanism 3 also includes a quick-release plate base 32, a coarse adjustment knob 33, and a fine adjustment knob 34; the quick-release plate base 32 connects the laser parallel detection device 1 and the adjustable clamp 31, and the coarse adjustment knob 33 and fine adjustment knob 34 can adjust the distance between the clamping arms of the adjustable clamp 31, thereby adjusting the clamping range and clamping force of the adjustable clamp 31.

[0039] In one specific embodiment, the coarse adjustment knob 33 is connected to the adjustable clamp 31 via a screw adjustment mechanism, allowing the clamping range to be adjusted from 50 to 200 mm. The fine adjustment knob 34 is connected to the adjustable clamp 31 via a gear fine adjustment mechanism, and each rotation of the fine adjustment knob 34 causes the clamping arms of the adjustable clamp 31 to move relative to each other by 0.5 mm. Furthermore, the adjustable clamp 31 is provided with non-slip silicone pads 35 on opposite sides of the clamping arms. At least one of the adjustable clamp 31 and the quick-release plate base 32 is constructed from a lightweight, high-strength alloy.

[0040] Specifically, the adjustable clamp 31 utilizes a bidirectional screw adjustment structure, including left-hand and right-hand threaded sections. A coarse adjustment knob 33 allows simultaneous adjustment of both clamping arms, achieving a clamping range of 50 to 200 mm. A gear-operated fine adjustment mechanism allows for precise adjustment of the clamping force by 0.5 mm per rotation of the fine adjustment knob 34, ensuring precise control of the clamping force. The entire clamping mechanism 3 is mounted above the visual measurement camera, without affecting its normal operation or field of view. The main components of the clamping mechanism 3 are constructed from a lightweight, high-strength alloy, and the clamping surface is provided with a non-slip silicone pad 35, ensuring stability while reducing overall weight. By adjusting the clamping range of the clamping mechanism 3, the device can be securely fixed above various types of measurement cameras, achieving stable and reliable auxiliary measurement functions. It should be noted that adjusting the relative distance between two clamping members using a screw adjustment mechanism and a gear-operated fine adjustment mechanism is already widely used in various fields, and this structure is not the key structure to solve the technical problem solved by this application. Therefore, this article does not elaborate on the screw adjustment mechanism and the gear-operated fine adjustment mechanism.

[0041] like Figure 2-3 As shown, in one specific embodiment, a U-shaped buckle 17 is provided on the top of the laser parallelism detection device 1. The telescopic auxiliary sight 2 is detachably connected to the laser parallelism detection device 1 via the U-shaped buckle 17, facilitating quick installation and removal. The telescopic auxiliary sight 2 includes a zoom optical lens 21 with a focal length adjustment range of 24 to 200 mm, allowing the measurement beam to be quickly aligned with targets at different distances to accommodate targets at different distances.

[0042] like Figure 1-2 As shown, in a specific embodiment, the slide rail 12 is a dovetail groove slide rail, and the base of the high-precision laser distance detection unit 13 is a dovetail tenon structure, and the dovetail tenon structure is movably clamped in the dovetail groove slide rail. Specifically, a total of 4 high-precision laser distance detection units 13 are provided, and the base of each high-precision laser distance detection unit 13 is designed as a dovetail tenon structure, which is installed in a matching dovetail groove slide rail. Two high-precision laser distance detection units 13 are configured on each dovetail groove slide rail. By moving the high-precision laser distance detection unit 13 along the slide rail 12, the need for parallelism adjustment of targets of different sizes can be better adapted. In addition, the display module includes a computer or mobile device, and the laser parallel detection device 1 is connected to the display module via a data line 18 to realize real-time data transmission and display.

[0043] The auxiliary device for paralleling the visual measurement camera and the target in the embodiment of the present application adopts a modular design, including an independently operable laser distance detection unit, a telescopic auxiliary sight 2 with adjustable focal length, and an adjustable clamp 31 suitable for a variety of camera models, so that it can adapt to various complex outdoor environments and different measurement needs. This flexibility greatly expands the application range of the device and improves its practicality in different engineering projects. The lightweight design and quick installation mechanism make the device easy to carry and deploy, and is particularly suitable for field operations. In addition, the connection to the computer display device and the real-time data feedback function simplify the operating process and reduce the requirements for the operator's professional skills, so that even relatively inexperienced personnel can quickly master the use method, thereby improving work efficiency and reducing training costs.

[0044] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. An auxiliary device for paralleling a visual measurement camera with a target, characterized in that: include: A laser parallelism detection device, the laser parallelism detection device having a front area, the outer wall of the front area being provided with two slide rails along a diagonal line, at least two high-precision laser distance detection units being slidably provided within the slide rails, the high-precision laser distance detection units being movable along the length direction of the slide rails; A telescopic auxiliary sight, the telescopic auxiliary sight is arranged on the top of the laser parallel detection device; A clamping mechanism, the clamping mechanism being arranged at the bottom of the laser parallel detection device, the clamping mechanism comprising an adjustable clamper, the adjustable clamper being used to clamp a visual measurement camera; A display module is connected to the laser parallel detection device in data communication, and is used to display the detection values ​​of the plurality of high-precision laser distance detection units.

2. The auxiliary device for paralleling the visual measurement camera and the target according to claim 1, characterized in that: The laser parallel detection device also has a rear area, in which a temperature compensation device and an illumination compensation device are arranged, and the side walls of the rear area are provided with a temperature sensor and an illumination sensor, the temperature sensor is data-connected to the temperature compensation device, and the illumination sensor is data-connected to the illumination compensation device; the temperature compensation device and the illumination compensation device are data-connected to the display module, and are used to correct the influence of temperature and illumination changes on measurement.

3. The auxiliary device for paralleling the visual measurement camera and the target according to claim 1 or 2, characterized in that: The clamping mechanism also includes a quick-release plate seat, a coarse adjustment knob and a fine adjustment knob; The quick-release plate seat connects the laser parallel detection device and the adjustable clamp, and the coarse adjustment knob and the fine adjustment knob can adjust the clamping arm spacing of the adjustable clamp to adjust the clamping range and clamping force of the adjustable clamp.

4. The auxiliary device for paralleling the visual measurement camera and the target according to claim 3, characterized in that: The coarse adjustment knob is connected to the adjustable clamp through a screw adjustment mechanism, and the clamping range that can be adjusted by the coarse adjustment knob is 50 to 200 mm; the fine adjustment knob is connected to the adjustable clamp through a gear fine adjustment mechanism, and when the fine adjustment knob rotates one circle, the clamping arm of the adjustable clamp moves relative to each other by 0.5 mm.

5. The auxiliary device for paralleling the visual measurement camera and the target according to claim 3, characterized in that: The adjustable clamp is provided with anti-slip silicone pads on the opposite side of the clamp arm, and at least one of the adjustable clamp and the quick-release plate seat is made of a lightweight high-strength alloy.

6. The auxiliary device for paralleling a vision measurement camera with a target according to any one of claims 1-2 or 4-5, characterized in that: A U-shaped buckle is provided on the top of the laser parallel detection device, and the telescopic auxiliary sight is detachably connected to the laser parallel detection device through the U-shaped buckle; the telescopic auxiliary sight includes a zoom optical lens, and the focal length adjustment range of the zoom optical lens is 24 to 200 mm.

7. The auxiliary device for paralleling the vision measurement camera and the target according to claim 6, characterized in that: The slide rail is a dovetail groove slide rail, the base of the high-precision laser distance detection unit is a dovetail tenon structure, and the dovetail tenon structure is movably clamped in the dovetail groove slide rail.

8. The auxiliary device for paralleling the vision measurement camera and the target according to claim 6, characterized in that: The display module includes a computer or a mobile device, and the laser parallel detection device is connected to the display module via a data line to transmit and display real-time data.

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