CN205246012U - Car appearance measurement system mechanical type distortion coefficient measuring apparatu - Google Patents
Car appearance measurement system mechanical type distortion coefficient measuring apparatu Download PDFInfo
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- CN205246012U CN205246012U CN201521095343.7U CN201521095343U CN205246012U CN 205246012 U CN205246012 U CN 205246012U CN 201521095343 U CN201521095343 U CN 201521095343U CN 205246012 U CN205246012 U CN 205246012U
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- 238000005259 measurement Methods 0.000 title claims abstract description 26
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- 238000009434 installation Methods 0.000 abstract description 2
- 238000011179 visual inspection Methods 0.000 abstract 1
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- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
本实用新型公开了一种汽车形貌测量系统机械式畸变系数测量仪，旨在解决汽车形貌视觉检测系统摄像机镜头畸变系数无法简便测量的问题。汽车形貌测量系统机械式畸变系数测量仪主要由方架(1)、钢丝(2)、套筒(3)与调整螺钉(4)组成，通过调整螺钉(4)控制钢丝的拉伸，使畸变图像中的钢丝图像变为原本的直线，根据调整螺钉(4)的旋转圈数获得畸变系数,提供了一种结构简单、检测精度高、操作简便、易于安装、成本较低、性能可靠的汽车形貌测量系统机械式畸变系数测量仪。
The utility model discloses a mechanical distortion coefficient measuring instrument for an automobile appearance measuring system, which aims to solve the problem that the distortion coefficient of a camera lens of an automobile appearance visual inspection system cannot be easily measured. The mechanical distortion coefficient measuring instrument of the automobile shape measurement system is mainly composed of a square frame (1), a steel wire (2), a sleeve (3) and an adjusting screw (4). The tension of the steel wire is controlled by the adjusting screw (4), so that The steel wire image in the distorted image becomes the original straight line, and the distortion coefficient is obtained according to the number of rotations of the adjustment screw (4), which provides a simple structure, high detection accuracy, easy operation, easy installation, low cost, and reliable performance. Mechanical distortion coefficient measuring instrument for automobile shape measurement system.
Description
技术领域technical field
本实用新型涉及一种汽车工业领域的检测设备的检定设备，更具体的说，它涉及一种汽车形貌测量系统机械式畸变系数测量仪。The utility model relates to a verification device for a detection device in the field of the automobile industry, more specifically, it relates to a mechanical distortion coefficient measuring instrument for an automobile shape measurement system.
背景技术Background technique
在进行汽车形貌测量系统的摄像机标定时，由于畸变的存在会导致较大的测量误差。在理想情况下，空间中任一直线在像平面的投影仍然为一直线，由于存在畸变，实际直线成像为一曲线。通过调整汽车形貌测量系统机械式畸变系数测量仪使图像中的钢丝由曲线变为直线，记录钢丝移动的距离从而计算摄像机的镜头畸变系数对汽车形貌测量系统和汽车工业检测领域的技术进步具有重要意义。During the camera calibration of the automobile shape measurement system, the existence of distortion will lead to large measurement errors. In an ideal situation, the projection of any straight line in space on the image plane is still a straight line. Due to the existence of distortion, the actual straight line is imaged as a curve. By adjusting the mechanical distortion coefficient measuring instrument of the automobile shape measurement system, the steel wire in the image changes from a curve to a straight line, and the moving distance of the wire is recorded to calculate the lens distortion coefficient of the camera. is of great significance.
发明内容Contents of the invention
本实用新型针对汽车形貌测量系统的摄像机镜头存在较大畸变误差的现状，提供了一种结构简单、检测精度高、累积误差小、功能完整、操作简便、易于安装、通用性强、成本较低、性能可靠的可满足汽车检测行业对汽车车体形貌检测系统进行检定要求的汽车形貌测量系统机械式畸变系数测量仪。The utility model aims at the current situation that the camera lens of the automobile shape measurement system has a large distortion error, and provides a simple structure, high detection accuracy, small cumulative error, complete function, simple operation, easy installation, strong versatility, and low cost. It is a mechanical distortion coefficient measuring instrument for automobile shape measurement system with low cost and reliable performance, which can meet the requirements of the automobile inspection industry for the verification of the automobile body shape inspection system.
参阅图1至图4，为解决上述技术问题，本实用新型采用如下技术方案予以实现。本实用新型所提供的汽车形貌测量系统机械式畸变系数测量仪包括有方架、钢丝、套筒与调整螺钉。Referring to Fig. 1 to Fig. 4, in order to solve the above-mentioned technical problems, the utility model adopts the following technical solutions to realize it. The mechanical distortion coefficient measuring instrument of the automobile shape measuring system provided by the utility model includes a square frame, a steel wire, a sleeve and an adjusting screw.
四个调整螺钉的标准六角螺栓分别穿过方架的四个螺纹孔与方架螺纹固定连接，四个调整螺钉端部的梯形圆台楔入套筒沿轴向加工的阶梯圆孔，两根钢丝分别穿过两个套筒的两个径向圆形通孔，两根钢丝的两端分别焊接在方架水平方向内表面的两侧，两根钢丝相互平行，两根钢丝分别穿过两个套筒的两个径向圆形通孔，两根钢丝的两端分别焊接在方架垂直方向内表面的两侧，两根钢丝相互平行。The standard hexagonal bolts of the four adjusting screws pass through the four threaded holes of the square frame and are fixedly connected with the square frame. Pass through the two radial circular through holes of the two sleeves respectively. The two ends of the two steel wires are respectively welded on both sides of the inner surface of the square frame in the horizontal direction. The two steel wires are parallel to each other, and the two steel wires respectively pass through two The two radial circular through holes of the sleeve, the two ends of the two steel wires are respectively welded on both sides of the vertical inner surface of the square frame, and the two steel wires are parallel to each other.
技术方案中所述的方架由方钢焊接而成的矩形框架，矩形框架四边的内表面中部各加工一个螺纹孔。The square frame described in the technical proposal is a rectangular frame welded by square steel, and each of the four sides of the rectangular frame is processed with a threaded hole in the middle of the inner surface.
技术方案中所述的套筒为圆柱体钢件，套筒沿轴向加工一个阶梯圆孔，套筒底部沿径向加工一个圆形通孔。The sleeve described in the technical solution is a cylindrical steel piece, a stepped circular hole is processed in the axial direction of the sleeve, and a circular through hole is processed in the radial direction at the bottom of the sleeve.
技术方案中所述的调整螺钉为标准六角螺栓与梯形圆台焊接制成，梯形圆台的小直径的底面直径与螺栓直径相同，梯形圆台的短边长度小于套筒顶端的圆孔直径0.5毫米，梯形圆台长边长度大于梯形圆台短边长度1毫米。The adjustment screw described in the technical proposal is made by welding a standard hexagonal bolt and a trapezoidal circular platform. The diameter of the bottom surface of the small diameter of the trapezoidal circular platform is the same as the diameter of the bolt. The length of the long side of the circular platform is greater than the length of the short side of the trapezoidal circular platform by 1 mm.
本实用新型的有益效果是：The beneficial effects of the utility model are:
(1)传统方法通过分析空间中直线的实际投影曲线，建立投影曲线的像点方程，考虑像点坐标关系建立径向畸变模型，最终求解摄像机的畸变系数。该方法需要建立较复杂的数学模型，并求解一系列的线性方程组。本实用新型利用简单的机械材料，通过调整螺钉调整汽车形貌测量系统机械式畸变系数测量仪中钢丝的弯度，使图像中的由曲线变为直线，并将螺钉旋转圈数换算为钢丝移动的距离，从而方便快捷地得出摄像机的镜头畸变系数。(1) The traditional method analyzes the actual projection curve of a straight line in space, establishes the image point equation of the projection curve, considers the coordinate relationship of the image point to establish a radial distortion model, and finally solves the distortion coefficient of the camera. This method needs to establish a relatively complex mathematical model and solve a series of linear equations. The utility model uses simple mechanical materials to adjust the curvature of the steel wire in the mechanical distortion coefficient measuring instrument of the automobile shape measurement system by adjusting the screw, so that the curve in the image becomes a straight line, and the number of screw rotations is converted into the movement of the steel wire. Distance, so that the lens distortion coefficient of the camera can be obtained conveniently and quickly.
(2)本实用新型的主要零件采用标准型钢进行加工，首先，标准型钢产量大，机械加工工序少，生产成本较低；其次，作为测量仪器的重要附件，采用标准型钢具有一定的强度，能够在长期使用中不变形，保证测量的精度，可以满足国家标准对测量精度的要求。(2) The main parts of the utility model adopt standard section steel to process, at first, the output of standard section steel is big, and machining process is few, and production cost is lower; Secondly, as the important accessory of measuring instrument, adopt standard section steel to have certain intensity, can It will not be deformed in long-term use, and the accuracy of measurement can be guaranteed, which can meet the requirements of national standards for measurement accuracy.
附图说明Description of drawings
图1是汽车形貌测量系统机械式畸变系数测量仪的轴测图；Figure 1 is an axonometric view of the mechanical distortion coefficient measuring instrument of the automobile shape measurement system;
图2是汽车形貌测量系统机械式畸变系数测量仪中套筒3、调整螺钉4的剖视图；Fig. 2 is a cross-sectional view of the sleeve 3 and the adjusting screw 4 in the mechanical distortion coefficient measuring instrument of the automobile shape measurement system;
图3是汽车形貌测量系统机械式畸变系数测量仪中套筒3的轴侧图；Fig. 3 is an axonometric view of the sleeve 3 in the mechanical distortion coefficient measuring instrument of the automobile profile measurement system;
图4是汽车形貌测量系统机械式畸变系数测量仪中调整螺钉4的轴侧图；Fig. 4 is an axonometric view of the adjusting screw 4 in the mechanical distortion coefficient measuring instrument of the automobile profile measurement system;
图中：1.方架，2.钢丝，3.套筒，4.调整螺钉。In the figure: 1. Square frame, 2. Steel wire, 3. Sleeve, 4. Adjusting screw.
具体实施方式detailed description
下面结合附图对本实用新型作进一步的详细描述:Below in conjunction with accompanying drawing, the utility model is described in further detail:
参阅图1至图4，汽车形貌测量系统机械式畸变系数测量仪包括有方架1、钢丝2、套筒3与调整螺钉4。Referring to FIGS. 1 to 4 , the mechanical distortion coefficient measuring instrument of the automobile profile measurement system includes a square frame 1 , a steel wire 2 , a sleeve 3 and an adjusting screw 4 .
方架1由方钢焊接而成的矩形框架，矩形框架四边的内表面中部各加工一个螺纹孔,套筒3为圆柱体钢件，套筒3沿轴向加工一个阶梯圆孔，套筒3底部沿径向加工一个圆形通孔。Square frame 1 is a rectangular frame welded by square steel. A threaded hole is processed in the middle of the inner surface of the four sides of the rectangular frame. The sleeve 3 is a cylindrical steel part. A circular through hole is machined radially at the bottom.
调整螺钉4为标准六角螺栓与梯形圆台焊接制成，梯形圆台的小直径的底面直径与螺栓直径相同，梯形圆台的短边长度小于套筒3顶端的圆孔直径0.5毫米，梯形圆台长边长度大于梯形圆台短边长度1毫米，四个调整螺钉4的标准六角螺栓分别穿过方架1的四个螺纹孔与方架1螺纹固定连接，四个调整螺钉4的标准六角螺栓的端部与四个梯形圆台的大直径的底面焊接连接，四个调整螺钉4端部的梯形圆台楔入套筒3沿轴向加工的阶梯圆孔。The adjustment screw 4 is made by welding the standard hexagonal bolt and the trapezoidal table. The diameter of the bottom surface of the small diameter of the trapezoidal table is the same as the diameter of the bolt. The length of the short side of the trapezoidal circular platform is 1 mm, and the standard hexagonal bolts of the four adjustment screws 4 pass through the four threaded holes of the square frame 1 and are fixedly connected with the square frame 1. The ends of the standard hexagonal bolts of the four adjustment screws 4 are connected with the The large-diameter bottom surfaces of the four trapezoidal circular pedestals are welded and connected, and the trapezoidal circular pedestals at the ends of the four adjustment screws 4 are wedged into the stepped circular holes machined in the axial direction of the sleeve 3 .
两根钢丝2分别穿过两个套筒3的两个径向圆形通孔，两根钢丝2的两端分别焊接在方架1水平方向内表面的两侧，两根钢丝2相互平行，两根钢丝2分别穿过两个套筒3的两个径向圆形通孔，两根钢丝2的两端分别焊接在方架1垂直方向内表面的两侧，两根钢丝2相互平行。The two steel wires 2 pass through the two radial circular through holes of the two sleeves 3 respectively, and the two ends of the two steel wires 2 are respectively welded on both sides of the inner surface of the square frame 1 in the horizontal direction, and the two steel wires 2 are parallel to each other. The two steel wires 2 respectively pass through the two radial circular through holes of the two sleeves 3, and the two ends of the two steel wires 2 are respectively welded on both sides of the vertical inner surface of the square frame 1, and the two steel wires 2 are parallel to each other.
汽车形貌测量系统机械式畸变系数测量仪的使用方法：将汽车形貌测量系统机械式畸变系数测量仪放置在汽车形貌测量系统摄像机的正面，通过调节调整螺钉4使摄像机采集的焊接在方架1上的钢丝2的图像为直线，同时记录调整螺钉4的旋转圈数并换算为调整螺钉4的轴向位移，根据轴向位移得出汽车形貌测量系统摄像机的畸变系数。How to use the mechanical distortion coefficient measuring instrument of the automobile shape measurement system: place the mechanical distortion coefficient measuring instrument of the automobile shape measurement system on the front of the camera of the automobile shape measurement system, and adjust the adjustment screw 4 so that the welded data collected by the camera is in the square The image of the steel wire 2 on the frame 1 is a straight line. At the same time, the number of rotations of the adjustment screw 4 is recorded and converted into the axial displacement of the adjustment screw 4. According to the axial displacement, the distortion coefficient of the camera of the automobile shape measurement system is obtained.
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| CN201521095343.7U CN205246012U (en) | 2015-12-24 | 2015-12-24 | Car appearance measurement system mechanical type distortion coefficient measuring apparatu |
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| CN201521095343.7U CN205246012U (en) | 2015-12-24 | 2015-12-24 | Car appearance measurement system mechanical type distortion coefficient measuring apparatu |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105423952A (en) * | 2015-12-24 | 2016-03-23 | 吉林大学 | Automobile morphology measurement system mechanical distortion coefficient measuring instrument |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105423952A (en) * | 2015-12-24 | 2016-03-23 | 吉林大学 | Automobile morphology measurement system mechanical distortion coefficient measuring instrument |
| CN105423952B (en) * | 2015-12-24 | 2018-01-05 | 吉林大学 | The mechanical distortion factor measuring instrument of automobile shape measurement system |
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Granted publication date: 20160518 Effective date of abandoning: 20180105 |