CN202255302U - Automobile wheel hub bolt hole detection device - Google Patents

本实用新型提供一种汽车轮毂螺栓孔检测装置，属于汽车检测领域，该装置由汽车轮毂螺栓孔、CCD摄像头、图像采集器、单片机、液晶显示、报警装置组成，CCD摄像头与图像采集器相连，图像采集器与单片机相连，单片机与液晶显示、报警装置相连，CCD摄像头获取的图像经过图像采集器处理，计算螺栓孔内周围孔圆心坐标、半径所占像素，单片机利用标准螺栓孔内每个孔半径值与其所占像素比例，计算每个孔半径所占像素对应的实际值，周围孔圆心坐标结合最小二乘法，获取周围孔圆心夹角及节圆半径所占像素，单片机利用标准螺栓孔节圆半径值与其所占像素比例，计算节圆半径所占像素对应的实际值，计算值通过液晶显示，若其值超过允许误差，则报警装置启动。

The utility model provides an automobile wheel hub bolt hole detection device, which belongs to the field of automobile detection. The device is composed of an automobile wheel hub bolt hole, a CCD camera, an image collector, a single-chip microcomputer, a liquid crystal display, and an alarm device. The CCD camera is connected with the image collector. The image collector is connected with the single-chip microcomputer, and the single-chip computer is connected with the liquid crystal display and the alarm device. The image acquired by the CCD camera is processed by the image collector, and the center coordinates and radius of the holes around the bolt hole are calculated. The single-chip computer uses each hole in the standard bolt hole Calculate the actual value corresponding to the pixel occupied by the radius value of each hole, and combine the coordinates of the center of the surrounding hole with the least square method to obtain the angle between the center of the surrounding hole and the pixel occupied by the radius of the pitch circle. The single-chip microcomputer uses the standard bolt hole node Calculate the actual value corresponding to the pixel occupied by the radius of the circle and its pixel ratio. The calculated value is displayed on the liquid crystal display. If the value exceeds the allowable error, the alarm device will be activated.

一种汽车轮毂螺栓孔检测装置An automobile wheel hub bolt hole detection device

技术领域 technical field

本实用新型提供一种汽车轮毂螺栓孔检测装置，属于汽车检测领域。  The utility model provides an automobile hub bolt hole detection device, which belongs to the field of automobile detection. the

背景技术 Background technique

汽车轮毂螺栓孔有四孔、五孔、六孔等模型，汽车轮毂螺栓孔的设计要求加工比较准确，孔数和节圆半径是其比较重要的两个参数，但是目前的方法主要是测量其节圆半径，使用方法简单并且不涉及螺栓孔内每孔的半径，周围孔之间的夹角，这样造成的误差比较大，即使车轮能够安装上，其安全性也会受到影响，针对于此，提出一种汽车轮毂螺栓孔检测装置，具有很好的实用性。  There are four-hole, five-hole, and six-hole models for automobile wheel bolt holes. The design of automobile wheel bolt holes requires accurate processing. The number of holes and the radius of the pitch circle are two important parameters, but the current method is mainly to measure its Pitch circle radius, the method of use is simple and does not involve the radius of each hole in the bolt hole, the angle between the surrounding holes, this will cause a relatively large error, even if the wheel can be installed, its safety will be affected, for this , a detection device for automobile wheel hub bolt holes is proposed, which has good practicability. the

发明内容 Contents of the invention

鉴于上述，本实用新型主要目的在于提供一种汽车轮毂螺栓孔检测装置，能够实时的对汽车轮毂螺栓孔进行检测，准确的测量出轮毂螺栓孔内每个孔的半径、轮毂螺栓孔的节圆半径，具有很强的实用性。  In view of the above, the main purpose of this utility model is to provide a detection device for automobile wheel bolt holes, which can detect the automobile wheel bolt holes in real time, and accurately measure the radius of each hole in the wheel bolt holes and the pitch circle of the wheel bolt holes. Radius, has a strong practicality. the

为了达到上述目的，本实用新型发明采取的技术方案是：该装置由汽车轮毂螺栓孔、CCD摄像头、图像采集器、单片机、液晶显示、报警装置组成，其中CCD摄像头与图像采集器相连，图像采集器与单片机相连，单片机与液晶显示装置、报警装置相连，CCD摄像头垂直放置于汽车轮毂螺栓孔的正上方，将CCD摄像头获取的视频图像，经过图像采集器进行处理，运用图像的去噪、二值化、形态学中的膨胀、腐蚀算法获取比较完整的螺栓孔中的每个孔的完整边缘，结合广义Hough算法，计算出轮毂螺栓孔内每个孔圆心坐标及其半径所占像素个数，并将数据送入单片机，利用标准的轮毂螺栓孔内每个孔半径与其所占像素之间的比例，单片机对实际获取的轮毂螺栓孔内每个孔半径所占像素对应实际值进行计算，利用每个孔的圆心坐标、最小二乘法，计算轮毂螺栓孔内周围孔圆心的夹角及其节圆半径所占像素，利用标准的轮毂螺栓孔节圆半径与其所占像素之间的比例，单片机对实际获取的轮毂螺栓孔节圆半径所占像素对应实际值进行计算，并将相关数据进行液晶显示，若实际值超过允许误差，则启动报警装置进行报警。  In order to achieve the above object, the technical solution adopted by the utility model is: the device is made up of automobile hub bolt holes, CCD camera, image collector, single-chip microcomputer, liquid crystal display, and alarm device, wherein the CCD camera is connected with the image collector, image acquisition The device is connected with the single-chip microcomputer, the single-chip microcomputer is connected with the liquid crystal display device and the alarm device, and the CCD camera is vertically placed directly above the bolt hole of the automobile wheel hub. The expansion and erosion algorithms in value and morphology obtain the complete edge of each hole in the relatively complete bolt hole, and combine the generalized Hough algorithm to calculate the center coordinates of each hole in the hub bolt hole and the number of pixels occupied by the radius , and send the data to the single-chip microcomputer, using the ratio between the radius of each hole in the standard hub bolt hole and the pixel it occupies, the single-chip microcomputer calculates the corresponding actual value of the pixel occupied by the radius of each hole in the hub bolt hole actually obtained, Use the center coordinates of each hole and the least square method to calculate the angle between the center of the hub bolt hole and the pixels occupied by the radius of the pitch circle, and use the ratio between the radius of the pitch circle of the standard hub bolt hole and the pixels it occupies. The single-chip computer calculates the actual value corresponding to the pixel occupied by the pitch circle radius of the hub bolt hole actually obtained, and displays the relevant data on the liquid crystal display. If the actual value exceeds the allowable error, the alarm device is activated to give an alarm. the

本实用新型通过图像采集器对汽车轮毂螺栓孔的测量数据进行采集，通过单片机对采集的汽车轮毂螺栓孔内每个孔半径、周围孔圆心的夹角及螺栓孔的节圆半径进行计算，并与标准数据进行比较，在误差允许范围内，获得准确测量值，实用性较强。  The utility model collects the measurement data of the bolt holes of the automobile hub through the image collector, and calculates the radius of each hole in the collected bolt holes of the automobile wheel, the angle between the centers of the surrounding holes and the pitch circle radius of the bolt holes through a single-chip microcomputer, and Compared with the standard data, the accurate measurement value is obtained within the allowable range of error, which has strong practicability. the

附图说明 Description of drawings

图1是本实用新型的系统原理图。该系统由汽车轮毂螺栓孔(1)、CCD摄像头(2)、图像采集器(3)、单片机(4)、液晶显示(5)、报警装置(6)组成。  Fig. 1 is the system schematic diagram of the utility model. The system is composed of an automobile wheel hub bolt hole (1), a CCD camera (2), an image collector (3), a single chip microcomputer (4), a liquid crystal display (5) and an alarm device (6). the

图2是本实用新型的工作流程图。主要由汽车轮毂螺栓孔(1)、CCD摄像头(2)、图像采集器(3)、图像平滑去噪(7)、图像的二值化(8)、形态学膨胀腐蚀计算(9)、广义Hough算法(10)、螺栓孔内每个孔半径所占像素(11)、每个孔的圆心坐标(12)、最小二乘法(13)、周围孔圆心的夹角及其节圆半径所占像素(14)、单片机(4)、标准轮毂螺栓孔内每个孔半径值及其所占像素比例(15)、标准轮毂螺栓孔内每个节圆半径值及其所占像素比例(16)、轮毂螺栓孔内每个孔半径、周围孔圆心夹角及其节圆半径实际值(17)、液晶显示(5)、报警装置(6)组成。  Fig. 2 is a work flow diagram of the utility model. Mainly consists of automobile hub bolt holes (1), CCD camera (2), image collector (3), image smoothing and denoising (7), image binarization (8), morphological expansion and corrosion calculation (9), generalized Hough algorithm (10), the pixels occupied by the radius of each hole in the bolt hole (11), the coordinates of the center of each hole (12), the least square method (13), the included angle of the center of the surrounding holes and the radius of the pitch circle Pixels (14), single-chip microcomputer (4), the radius value of each hole in the standard hub bolt hole and its proportion of pixels (15), the radius value of each pitch circle in the standard hub bolt hole and its proportion of pixels (16) , the radius of each hole in the hub bolt hole, the angle between the center of the surrounding holes and the actual value of the radius of the pitch circle (17), a liquid crystal display (5), and an alarm device (6). the

具体实施方式 Detailed ways

下面结合附图对本实用新型发明进行进一步的说明。  Below in conjunction with accompanying drawing, the utility model invention is further described. the

图2是本实用新型的系统工作流程图，如图2所示，其具体步骤如下：  Fig. 2 is a system work flowchart of the present utility model, as shown in Fig. 2, its concrete steps are as follows:

步骤1CCD摄像头(2)实时采集每一个汽车轮毂螺栓孔(1)的图像；  Step 1CCD camera (2) collects the image of each automobile hub bolt hole (1) in real time;

步骤2将采集的图像送入图像采集器(3)，通过图像平滑去噪(7)、图像的二值化(8)获取螺栓孔内每孔的大体边缘，再通过形态学膨胀腐蚀计算(9)，获取螺栓孔内每孔的完整边缘，结合广义Hough算法(10)，获取螺栓孔内每个孔半径所占像素(11)，利用每个孔的圆心坐标(12)结合最小二乘法(13)，获取周围孔圆心的夹角及其节圆半径所占像素(14)，通过单片机利用(4)标准轮毂螺栓孔内每个孔半径值及其所占像素比例(15)及标准轮毂螺栓孔节圆半径值及其所占像素比例(16)，计算出轮毂螺栓孔内每个孔半径、周围孔圆心夹角及其节圆半径实际值(17)  In step 2, the collected image is sent to the image collector (3), and the general edge of each hole in the bolt hole is obtained through image smoothing and denoising (7), and image binarization (8), and then calculated by morphological expansion and corrosion ( 9), obtain the complete edge of each hole in the bolt hole, combine the generalized Hough algorithm (10), obtain the pixel occupied by the radius of each hole in the bolt hole (11), use the center coordinates of each hole (12) combined with the least squares method (13), obtain the included angle of the center of the surrounding hole and the pixels occupied by the radius of the pitch circle (14), use (4) each hole radius value in the standard hub bolt hole and the pixel ratio (15) and the standard by the single-chip microcomputer The hub bolt hole pitch circle radius value and its pixel ratio (16), calculate the radius of each hole in the hub bolt hole, the angle between the center of the surrounding holes and the actual value of the pitch circle radius (17)

步骤3将轮毂螺栓孔内每孔半径、周围孔圆心夹角及其节圆半径实际值(14)进行液晶显示(5)，如果超出允许的误差范围，则单片机(4)启动报警装置(6)进行报警。  Step 3 Display the radius of each hole in the hub bolt hole, the angle between the center of the surrounding holes and the actual value (14) of the pitch circle radius (14) on the liquid crystal display (5), if it exceeds the allowable error range, the single-chip microcomputer (4) starts the alarm device (6 ) to alarm. the

1. automotive hub bolt hole pick-up unit; It is characterized in that: this device is made up of CCD camera (1), image acquisition device (2), single-chip microcomputer (3), liquid crystal display (4), warning device (5); Wherein CCD camera (1) links to each other with image acquisition device (2); Image acquisition device (2) links to each other with single-chip microcomputer (3), and single-chip microcomputer (3) links to each other with liquid crystal display (4), warning device (5).