CN106289102A - Automobile pattern based on cylindrical coordinates is without kinematic constraint detector - Google Patents
Automobile pattern based on cylindrical coordinates is without kinematic constraint detector Download PDFInfo
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Abstract
本发明公开了一种基于柱面坐标的汽车形貌无运动约束检测仪，旨在解决采用柱面坐标实现汽车形貌无运动约束检测问题。一种基于柱面坐标的汽车形貌无运动约束检测仪，其特征在于，所述的基于柱面坐标的汽车形貌无运动约束检测仪由楔形底座(2)、圆柱套(3)、发光二极管(4)、激光投线仪(5)与摄像机(6)组成。系统提供了一种结构简单、操作简便、易于安装、成本较低、性能可靠的基于柱面坐标的汽车形貌无运动约束检测仪。
The invention discloses a vehicle appearance non-motion constraint detector based on cylindrical coordinates, aiming at solving the problem of using cylindrical coordinates to realize the non-motion constraint detection of automobile topography. A vehicle appearance without motion constraints detector based on cylindrical coordinates, characterized in that the vehicle shape without motion constraints detector based on cylindrical coordinates consists of a wedge-shaped base (2), a cylindrical sleeve (3), a light-emitting Composed of a diode (4), a laser line projector (5) and a video camera (6). The system provides a cylindrical coordinate-based vehicle shape detector without motion constraints, which is simple in structure, easy to operate, easy to install, low in cost and reliable in performance.
Description
技术领域technical field
本发明涉及一种交通检测领域的检测设备，更具体的说，它是一种基于柱面坐标的汽车形貌无运动约束检测仪。The invention relates to a detection device in the field of traffic detection, more specifically, it is a detection device based on cylindrical coordinates for the shape of a vehicle without movement constraints.
背景技术Background technique
为保证汽车的安全行驶，合理快速的检测汽车的超载超限和尺寸改装，进行汽车的各项几何角度的视觉测量是汽车检测领域的主要检测项目之一。目前，对汽车尺寸和角度的测量主要是固定式检测设备，效率低、精度差。采用机器视觉测量技术对汽车几何参数进行非接触检测由于具有快速、准确和高可靠性等特点有望解决以上技术瓶颈。本发明采用柱面坐标实现摄像机标定并通过激光投线仪实现了检测系统对汽车形貌的扫描检测。系统结构简单、体积小、便于加工和运输，提高了汽车形貌检测结果的准确度，对汽车工业检测领域的技术进步具有重要意义。In order to ensure the safe driving of the car, it is one of the main inspection items in the field of automobile inspection to detect the overloading and size modification of the automobile reasonably and quickly, and to carry out the visual measurement of various geometric angles of the automobile. At present, the measurement of vehicle size and angle is mainly fixed detection equipment, which has low efficiency and poor accuracy. The use of machine vision measurement technology for non-contact detection of automotive geometric parameters is expected to solve the above technical bottlenecks due to its characteristics of fast, accurate and high reliability. The invention adopts cylindrical coordinates to realize camera calibration and realizes the scanning detection of the vehicle shape by the detection system through the laser line throwing instrument. The system has a simple structure, small size, and is convenient for processing and transportation, which improves the accuracy of the vehicle shape detection results and is of great significance to the technological progress in the field of automotive industry detection.
发明内容Contents of the invention
本发明针对无法实现汽车形貌柔性检测的问题，提供了一种体积小、结构简单、操作简便、易于安装、成本较低、性能可靠的基于柱面坐标的汽车形貌无运动约束检测仪。基于柱面坐标的汽车形貌无运动约束检测仪由圆柱套和发光二极管组实现了柱面坐标系下的车身形貌检测。Aiming at the problem that the flexible detection of the automobile shape cannot be realized, the invention provides a small volume, simple structure, easy operation, easy installation, low cost and reliable performance of the automobile shape non-motion constraint detector based on cylindrical coordinates. The vehicle shape detection instrument without motion constraints based on cylindrical coordinates realizes the detection of the shape of the vehicle body in the cylindrical coordinate system by a cylindrical sleeve and a light-emitting diode group.
参阅图1至图8，为解决上述技术问题，本发明采用如下技术方案予以实现。本发明所提供的基于柱面坐标的汽车形貌无运动约束检测仪包括有楔形底座、圆柱套、发光二极管、激光投线仪与摄像机。Referring to Fig. 1 to Fig. 8, in order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions to implement. The vehicle profile non-motion constraint detector based on cylindrical coordinates provided by the present invention includes a wedge-shaped base, a cylindrical sleeve, a light emitting diode, a laser line projector and a camera.
摄像机放置在地面上，一组发光二极管分别插入圆柱套的大圆孔侧面加工的一组圆形阶梯通孔，发光二极管侧面的圆环端面与圆柱套的大圆孔侧面阶梯通孔的端面面接触，楔形底座顶部的楔形圆柱插入圆柱套的大圆孔与大圆孔侧面面接触，一组螺栓分别穿过圆柱套底部四周加工的圆形通孔和楔形底座中部圆盘四周加工的圆形通孔与一组螺母螺纹固定连接，激光投线仪插入楔形底座顶部的楔形圆柱顶端的螺纹孔与楔形底座螺纹固定连接。The camera is placed on the ground, and a group of light-emitting diodes are respectively inserted into a group of circular stepped through holes processed on the side of the large round hole of the cylindrical sleeve. The wedge-shaped cylinder on the top of the wedge-shaped base is inserted into the large circular hole of the cylindrical sleeve and contacts the side surface of the large circular hole. A group of bolts respectively pass through the circular through-holes processed around the bottom of the cylindrical sleeve and the circular through-holes processed around the disc in the middle of the wedge-shaped base. The set of nuts is fixedly connected with threads, and the threaded hole at the top of the wedge-shaped cylinder inserted into the top of the wedge-shaped base is threaded and fixedly connected with the wedge-shaped base.
技术方案中所述的楔形底座为底部的细圆柱、中部的圆盘和顶部的楔形圆柱焊接而成的零件，中部的圆盘四周加工有圆形通孔，顶部的楔形圆柱顶端加工一个螺纹孔。The wedge-shaped base described in the technical proposal is a part welded by a thin cylinder at the bottom, a disc in the middle, and a wedge-shaped cylinder at the top. A circular through hole is processed around the disc in the middle, and a threaded hole is processed at the top of the wedge-shaped cylinder at the top. .
技术方案中所述的圆柱套为阶梯圆柱形零件，沿轴向加工一个带有楔形角的大圆孔，大圆孔侧面加工有一组圆形阶梯通孔，底部四周加工有圆形通孔。The cylindrical sleeve described in the technical solution is a stepped cylindrical part, and a large circular hole with a wedge-shaped angle is processed along the axial direction. A group of circular stepped through holes are processed on the side of the large circular hole, and circular through holes are processed around the bottom.
技术方案中所述的发光二极管为橡胶制作的圆柱形零件，圆柱的侧面中部加工有圆环，圆柱的底面为斜面。The light-emitting diode described in the technical solution is a cylindrical part made of rubber, a circular ring is processed in the middle of the side of the cylinder, and the bottom surface of the cylinder is an inclined plane.
技术方案中所述的激光投线仪为圆柱形零件，外侧加工有螺纹。The laser line thrower described in the technical proposal is a cylindrical part with threads processed on the outside.
本发明的有益效果是：The beneficial effects of the present invention are:
(1)本发明采用圆柱套和发光二极管组实现了柱面坐标系下的车身形貌检测，由于采用了此种方式，避免了采用导轨等占地较大的设备，扫描的方向可以自由控制，大大减小了设备的体积，提高了设备检测的灵活性。(1) The present invention uses a cylindrical sleeve and a light-emitting diode group to realize the detection of the shape of the vehicle body under the cylindrical coordinate system. Due to the adoption of this method, it avoids the use of guide rails and other equipment that occupy a large area, and the scanning direction can be freely controlled. , which greatly reduces the volume of the equipment and improves the flexibility of equipment detection.
(2)本发明的主要零件采用标准量具钢进行加工，首先，标准型钢产量大，机械加工工序少，制作简单，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) main part of the present invention adopts standard measuring tool steel to process, at first, standard section steel output is big, and machining process is few, makes simple, and production cost is lower; Secondly, as the important annex of measuring instrument, adopts standard section steel to have certain Strength, can not be deformed in long-term use, ensures the accuracy of measurement, and can meet the requirements of national standards for measurement accuracy.
图1是基于柱面坐标的汽车形貌无运动约束检测仪和待检汽车1的轴侧图；Fig. 1 is an axonometric view of a vehicle appearance non-motion constraint detector based on cylindrical coordinates and a vehicle 1 to be checked;
图2是基于柱面坐标的汽车形貌无运动约束检测仪的轴测图；Fig. 2 is an axonometric view of a vehicle shape non-motion constraint detector based on cylindrical coordinates;
图3是基于柱面坐标的汽车形貌无运动约束检测仪中楔形底座2、圆柱套3、发光二极管4、激光投线仪5的剖视图；3 is a cross-sectional view of a wedge-shaped base 2, a cylindrical sleeve 3, a light-emitting diode 4, and a laser line throwing instrument 5 in the vehicle shape non-motion constraint detector based on cylindrical coordinates;
图4是基于柱面坐标的汽车形貌无运动约束检测仪中圆柱套3、发光二极管4的局部剖视图；Fig. 4 is a partial cross-sectional view of a cylindrical sleeve 3 and a light emitting diode 4 in a vehicle shape non-motion constraint detector based on cylindrical coordinates;
图5是基于柱面坐标的汽车形貌无运动约束检测仪中楔形底座2的轴测图；Fig. 5 is the axonometric view of the wedge-shaped base 2 in the vehicle shape non-motion constraint detector based on cylindrical coordinates;
图6是基于柱面坐标的汽车形貌无运动约束检测仪中圆柱套3的轴测图；Fig. 6 is the axonometric view of the cylindrical sleeve 3 in the vehicle shape non-motion constraint detector based on cylindrical coordinates;
图7是基于柱面坐标的汽车形貌无运动约束检测仪中发光二极管4的轴测图；Fig. 7 is the axonometric view of the light-emitting diode 4 in the vehicle appearance non-motion constraint detector based on cylindrical coordinates;
图8是基于柱面坐标的汽车形貌无运动约束检测仪中激光投线仪5的轴测图；Fig. 8 is an axonometric view of the laser line projection instrument 5 in the vehicle shape non-motion constraint detector based on cylindrical coordinates;
图中：1.待检汽车,2.楔形底座,3.圆柱套,4.发光二极管,5.激光投线仪,6.摄像机。In the figure: 1. Vehicle to be inspected, 2. Wedge-shaped base, 3. Cylindrical sleeve, 4. Light-emitting diode, 5. Laser line projector, 6. Camera.
具体实施方式detailed description
下面结合附图对本发明作进一步的详细描述:Below in conjunction with accompanying drawing, the present invention is described in further detail:
参阅图1至图8，基于柱面坐标的汽车形貌无运动约束检测仪包括有楔形底座2、圆柱套3、发光二极管4、激光投线仪5与摄像机6。Referring to FIG. 1 to FIG. 8 , the vehicle shape detection instrument based on cylindrical coordinates without movement constraints includes a wedge-shaped base 2 , a cylindrical sleeve 3 , a light emitting diode 4 , a laser line projector 5 and a camera 6 .
摄像机6放置在地面上，楔形底座2为底部的细圆柱、中部的圆盘和顶部的楔形圆柱焊接而成的零件，中部的圆盘四周加工有圆形通孔，顶部的楔形圆柱顶端加工一个螺纹孔，圆柱套3为阶梯圆柱形零件，沿轴向加工一个带有楔形角的大圆孔，大圆孔侧面加工有一组圆形阶梯通孔，底部四周加工有圆形通孔，发光二极管4为橡胶制作的圆柱形零件，圆柱的侧面中部加工有圆环，圆柱的底面为斜面，一组发光二极管4分别插入圆柱套3的大圆孔侧面加工的一组圆形阶梯通孔，发光二极管4侧面的圆环端面与圆柱套3的大圆孔侧面阶梯通孔的端面面接触，楔形底座2顶部的楔形圆柱插入圆柱套3的大圆孔与大圆孔侧面面接触，一组螺栓分别穿过圆柱套3底部四周加工的圆形通孔和楔形底座2中部圆盘四周加工的圆形通孔与一组螺母螺纹固定连接，激光投线仪5为圆柱形零件，外侧加工有螺纹，激光投线仪5插入楔形底座2顶部的楔形圆柱顶端的螺纹孔与楔形底座2螺纹固定连接。The camera 6 is placed on the ground. The wedge-shaped base 2 is a part welded by a thin cylinder at the bottom, a disc in the middle and a wedge-shaped cylinder at the top. A round through hole is processed around the disc in the middle, and a wedge-shaped cylinder is processed at the top of the top. The threaded hole, the cylindrical sleeve 3 is a stepped cylindrical part, and a large circular hole with a wedge-shaped angle is processed along the axial direction. A group of circular stepped through holes are processed on the side of the large circular hole, and circular through holes are processed around the bottom. The light emitting diode 4 is A cylindrical part made of rubber, the middle part of the side of the cylinder is processed with a ring, the bottom of the cylinder is a slope, a group of light-emitting diodes 4 are respectively inserted into a group of circular stepped through holes processed on the side of the large round hole of the cylinder sleeve 3, and the side of the light-emitting diodes 4 The end face of the circular ring is in contact with the end face of the stepped through hole on the side of the large round hole of the cylindrical sleeve 3, the wedge-shaped cylinder on the top of the wedge-shaped base 2 is inserted into the large round hole of the cylindrical sleeve 3 and contacts the side surface of the large round hole, and a group of bolts pass through the cylindrical sleeve 3 respectively The circular through hole processed around the bottom and the wedge-shaped base 2 The circular through hole processed around the middle disc is fixedly connected with a set of nut threads. The laser threading instrument 5 is a cylindrical part with threads processed on the outside. The laser threading instrument 5 The threaded hole at the top of the wedge-shaped cylinder inserted into the top of the wedge-shaped base 2 is screwed and fixedly connected with the wedge-shaped base 2 .
基于柱面坐标的汽车形貌无运动约束检测仪的使用方法：The method of using the vehicle shape non-motion constraint detector based on cylindrical coordinates:
操作者用手握紧楔形底座，将基于柱面坐标的汽车形貌无运动约束检测仪的摄像机放置在待检汽车旁的水平地面上，启动激光投线仪，控制楔形底座用激光投线仪扫描车身，激光投线仪投射的面激光扫描汽车车体，通过图像处理可以重建汽车形貌。The operator holds the wedge-shaped base firmly with his hand, places the camera of the vehicle shape non-motion constraint detector based on cylindrical coordinates on the level ground next to the car to be inspected, starts the laser line projector, and controls the laser line projector for the wedge-shaped base Scanning the car body, the surface laser projected by the laser line projector scans the car body, and the shape of the car can be reconstructed through image processing.
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