CN104089574A - New classroom teaching model based on machine vision technology - Google Patents

New classroom teaching model based on machine vision technology Download PDF

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CN104089574A
CN104089574A CN 201410310028 CN201410310028A CN104089574A CN 104089574 A CN104089574 A CN 104089574A CN 201410310028 CN201410310028 CN 201410310028 CN 201410310028 A CN201410310028 A CN 201410310028A CN 104089574 A CN104089574 A CN 104089574A
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machine vision
workpiece
vision technology
students
step
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CN 201410310028
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Chinese (zh)
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沈宝国
梁佩佩
姜广美
靳春芳
朱和军
宋淑红
石鑫
吴钧
党丽峰
蒋超峰
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镇江高等职业技术学校
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Abstract

The invention discloses a new classroom teaching model based on the machine vision technology. The new classroom teaching model solves the problems existing in traditional measurement technology teaching. Hardware comprises a CCD image sensor of a USB interface, a sphere integration light source, a computer, a standard part with the diameter phi of 40.00 mm and a workpiece to be measured. Software is used for workpiece dimension measurement independent learning software based on the machine vision technology. According to the technical scheme of a system, a program is initialized, and a graphical user interface pops up; a video is started, and communication between the computer and a camera is achieved; calibration is performed, and the unit conversion relation is obtained; judgment is made, and students learn through independent operation; the video is stopped, communication between the computer and the camera is stopped; scores are queried, analysis is performed in time, and thus targeted teaching can be achieved and instructions can be given in good time. The system not only can meet the requirements of a traditional classroom but also can motivate the students, repetitive work of teachers is reduced, classroom efficiency is improved, the information-based teaching development progress of vocational schools is promoted, and the application and popularization prospects are broad.

Description

一种基于机器视觉技术的新型课堂教学模式 The new teaching model based on machine vision technology

技术领域 FIELD

[0001] 本专利涉及到机器视觉技术在制造加工业研究成果推广到职业学校课堂教学中, 尤其涉及一种基于机器视觉技术的新型课堂教学模式。 [0001] This patent relates to machine vision technology in the manufacturing industry to promote research into classroom teaching in vocational schools, in particular, to a new technology based on machine vision classroom teaching.

背景技术 Background technique

[0002] "测量技术"是数控专业主干课程《极限配合与技术测量》中重要的教学单元。 [0002] "Measurement Technology" CNC major courses "limits and measurement technology" an important teaching unit. 对零件的几何参数的测量主要包括长度、角度、表面粗糙度和形位误差。 Measuring the geometric parameters of the part including the length, angle, surface roughness and shape errors. 常用量具主要有游标卡尺、千分尺、内径百分表和万能角度尺。 There are commonly used measuring vernier caliper, micrometer diameter dial indicator and universal angle ruler. 通过该单元的学习与实训,学生要熟练掌握常用的游标卡尺、千分尺、内径百分表和万能角度尺等基本测量工具的使用方法。 By learning and training of the unit, the student to master the conventional vernier caliper, a micrometer, and universal angle ruler diameter dial indicator measurements using the basic method tools.

[0003] 传统教学方法:教师讲解量具的使用方法后,学生自主练习;在学生自主练习的过程中,教师通过看、问来了解学生是否会正确使用量具。 [0003] Traditional teaching methods: teachers on the use of measuring tools, student self practice; in the course of students' independent practice, teachers through Look, ask to see if the student can properly use measuring tools. 在传统教学方法中,学生在反复练习中常会出现错误操作情况,从而造成无法正确掌握使用方法;同时,教师虽然面对全班学生要进行大量的重复性劳动,但是仍不能对每一个同学进行考查测试。 In the traditional teaching methods, the error appears in the operating situation of the students repeated practice the Central Standing Committee, resulting in not master the use of the right; at the same time, although the face of the whole class teacher to a lot of repetitive work, but still can not be carried out for each student test test. 基于以上情况,如何快速有效地检验学生使用量具方法正确与否一直困扰着教师。 Based on the above, how quickly and effectively test students to use measuring method is correct or not, has been plagued by teachers.

发明内容 SUMMARY

[0004] 本发明的目的在于满足正常课堂教学的需求上,提高课堂效率,提出一种基于机器视觉技术的新型课堂教学模式。 [0004] The object of the present invention is to meet the needs of normal classroom teaching to improve the efficiency of class proposed new teaching model based on machine vision technology. 该系统将制造加工业中机器视觉技术研究成果服务于测量技术教学,实时采集工件图像,利用机器视觉技术获取零件的视觉测量值;用该值与学生手工测量值进行比较,从而确定学生手工测量值正确与否,进而判断学生是否正确使用测量工具。 The system manufacturing and processing machine vision technology research industry serve the measurement technique teaching, real-time collection workpiece image, using machine vision technology acquired visual measurement part; comparing that value with a manual measurement value students to determine the student manual measurement value is correct or not, and then determine whether students the proper use of measurement tools. 从学生的角度讲,及时获知使用量具的正确与否的结果,使学生能够及时分析自主学习,从而达到快速掌握量具的使用技巧;从教师的角度讲,可以减少重复性工作,同时还能全面掌握学生使用量具的情况。 From the student's perspective, timely informed of the use of measuring the correctness of the results, so that students can timely analysis of self-learning, so as to quickly master the use of measuring techniques; From a teacher's perspective, can reduce repetitive tasks, while overall to grasp the situation of students to use measuring tools.

[0005] 本发明的技术方案为:一种基于机器视觉技术的新型课堂教学模式,其特征在于, 包括以下步骤: [0005] aspect of the present invention is: A Novel teaching model machine vision technology, which is characterized by comprising the steps of:

[0006] 1)程序初始化; [0006] 1) initialization procedure;

[0007] 2)开启视频; [0007] 2) activate a video;

[0008] 3)标定处理; [0008] 3) the labeling process;

[0009] 4)判断处理; [0009] 4) determining process;

[0010] 5)关闭视频; [0010] 5) off the video;

[0011] 6)成绩查询。 [0011] 6) query results.

[0012] 所述步骤1)程序初始化的具体步骤为:运行可执行文件,将弹出图形用户界面, 主要有命令按钮、静态文本框、编辑框等三种用户控件,其中命令按钮又有开启视频、标定处理、判断处理、关闭视频及成绩查询等五种触发事件;静态文本框又有学生姓名、测量值、 信息反馈,可进行必要的文字说明和提示;编辑框可完成信息的输入输出,与静态文本框--对应。 [0012] step 1) specific program initialization step for: running the executable file, the graphical user interface will pop up, there are command buttons, static text boxes, edit boxes, three user control, there are command buttons which activate a video calibration process, judgment process, turn off the video and performance inquiries in five different trigger events; static text box have the student's name, measurement, feedback, make the necessary text and tips; edit box to be completed by the input and output information, and static text box - correspondence.

[0013] 所述步骤2)开启视频的具体步骤为:鼠标单击该命令按钮后,利用通用串行总线USB接口完成计算机与CCD图像传感器间的数据通信,可获取检测区实时动态场景,并在动态图像显示区域显示。 DETAILED Step [0013] step 2) activate a video is as follows: after the command button click, using a data communication between a universal serial bus USB interface to complete the CCD image sensor and the computer can obtain real-time dynamic scene detection zone, and displaying the dynamic image display area.

[0014] 所述步骤3)标定处理的具体步骤为:由于图像处理获取的尺寸单位为像素,而实际尺寸单位为毫米,那么必须进行单位换算。 DETAILED Step [0014] step 3) the labeling process is as follows: since the size of the unit processing the acquired image pixel, the actual dimensions are in millimeters, it must be Converter. 标定处理能够完成单位换算,获取其比值R,单位为毫米/像素。 To complete the calibration processing unit conversion, obtaining the ratio R, in mm / pixel. 此操作须在判断处理前完成,每次物距(镜头与工件的距离)变化后要重新标定。 This operation must be completed before the determination process, after each object distance (the distance between the lens and the workpiece) changes to re-calibrate. 标定处理时,将标准件摆放在检测区(球积分光源正下方),然后单击该命令按钮,自动完成毫米与像素间的单位换算,获取比值R。 When the calibration process, the standard display in the detection region (just below the light integrating sphere), and then click on the command button, automatically millimeters between the pixel unit conversion, obtaining the ratio R. 与该系统配套的标准件为Φ40. 00mm。 Supporting the system as a standard Φ40. 00mm.

[0015] 所述步骤4)判断处理的具体步骤为:学生将待测工件放到检测区,然后填写姓名和测量值,单击该命令按钮,则自动输出反馈信息。 DETAILED Step [0015] step 4) as the determination process: The test students work into the detection zone, the measured values ​​and then fill in the name, click on the command button, automatically outputs the feedback information. 其具体过程:计算机采集检测区内的工件图像,并在静态图像显示区域显示,进行图像灰度化、二值化、边缘检测,进行霍夫变换检测圆,最后得到工件的直径像素值,并与所述步骤3)处理后获取比值R相乘,确定工件直径的视觉测量尺寸,并与学生的手工测量值进行比较,根据比较的结果给出手工测量结果正确与否的信息反馈,因此学生可以及时了解自己的测量情况,实现自己测量、自己评分、自己分析从而达到自主学习的效果。 The specific process: a workpiece image acquisition detection zone computer, and displayed in the still image display area, the gradation of an image, binarization, edge detection, the Hough transform for detection circle, the diameter of the workpiece to obtain the final pixel value, and and step 3) obtaining the ratio R is multiplied by the post-processing to determine the diameter of the workpiece visual measurements and compared with student's manual measurements, the measurement results are given correct manual feedback or not according to a result of comparison, so students you can keep abreast of their measurement, the measuring realize their own score, so as to achieve self-analysis of their own learning.

[0016] 所述步骤5)关闭视频的具体步骤为:单击该命令按钮后,停止(XD图像传感器的工作,有利于延长其使用寿命。 [0016] step 5) is off video specific steps: After clicking the command button, a stop (XD working image sensor, help to extend its service life.

[0017] 所述步骤6)成绩查询的具体步骤为:成绩统计主要包括测量时间、学生姓名、测量结果等信息,为教师提供学生在某个时间段内测量情况。 [0017] The step 6) concrete steps to query results as: performance statistics including information measurement time, the student's name, measurements, etc., to provide students with a certain measurement period in the case of teachers. 根据成绩查询结果,教师可以了解到各个学生实际操作情况。 According to the results of the query results, teachers can learn each student in action. 对于全班同学存在的错误点进行分类,分别处理:对于大多同学出现的错误点,可以集中讲解;对于少部分同学出现的错误点,可以单独辅导,做到有的放矢,提高教师的工作效率,也使学生更好地利用时间,提高学习效率。 Be wrong for the whole class of students presence points classification, were treated: error point for most students appear to be focused on to explain; error for a small number of points students appear to be counseling alone, be targeted to improve the efficiency of teachers, too to enable students to make better use of time and improve learning efficiency.

[0018] 本发明的有益效果是:本发明针对测量技术的常规教学方法存在的不足问题,构建新型课堂教学模式,满足当前师生的实际需求,调动学生学习积极性,减少教师重复性工作,提高课堂效率,推广应用前景广阔。 [0018] the beneficial effects of the invention are: The invention is directed to the problem of inadequate existing conventional teaching methods of measurement techniques, to build a new teaching model to meet the actual needs of current teachers and students to mobilize the enthusiasm of students, teachers to reduce repetitive work and improve class efficiency, big market potential.

附图说明 BRIEF DESCRIPTION

[0019] 图1为本专利硬件连接示意图; [0019] FIG. 1 is a connection diagram Patent hardware;

[0020] 图2为本专利图形用户界面; [0020] FIG. 2 is a graphical user interface Patent;

[0021] 图3为本专利系统控制流程图; [0021] FIG. 3 is a flowchart illustrating a control system of the patent;

具体实施方式 detailed description

[0022] 下面结合附图对本专利加以详细说明。 [0022] The following detailed description in conjunction with the accompanying drawings be present patent. 本发明针对新型课堂教学模式具有以下特点:①教学改革;②机器视觉技术;③自主学习。 The invention has for new classroom teaching mode following characteristics: ① teaching reform; ② machine vision technology; ③ independent study.

[0023] 基于教学信息化的要求,本专利提出一种新型课堂教学模式。 [0023] Based on the teaching of the request for information, this patent proposes a new teaching model. 该系统由六步实现:1)程序初始化,弹出图形用户界面;2)开启视频,实现计算机与相机间通信;3)标定处理,获取像素尺寸与毫米尺寸间的转换关系;4)判断处理,学生自行操作,自动获取测量判断结果,自主学习;5)关闭视频,停止两者间通信;6)成绩查询,教师及时分析,做到有的放矢,适时点拨。 The system is implemented by six steps: 1) initialization, the pop-up GUI; 2) activate a video realized between the computer and the camera communication; 3) calibration process, to obtain the conversion relationship between the pixel size and millimeter dimensions; 4) Analyzing process, students operate on its own, automatically obtain measurement result of the determination, self-learning; 5) off the video, communication between the two stops; 6) query results, teachers timely analysis, be targeted, timely coaching.

[0024] 本专利的新型课堂教学模式由硬件和软件两部分组成。 [0024] The new teaching model according to the present patent consists of two portions of hardware and software. 硬件包括USB接口的(XD 图像传感器、球积分光源、计算机、Φ40. 00mm标准件及待测工件,其硬件连接如图1所示; 软件用到基于机器视觉技术的工件尺寸检测自主学习软件,其图形用户界面如图2所示, 其系统控制流程如图3所示,其主要包括以下步骤: The hardware includes a USB interface (XD image sensor, a light source integral ball, computer, Φ40 00mm standard parts and workpiece to be measured, which is connected to the hardware shown in Figure 1; based on the size of the workpiece detection software uses machine vision technology self-learning software, the graphical user interface shown in Figure 2, the system control flow shown in Figure 3, which includes the following steps:

[0025] 1.程序初始化:运行可执行文件,将弹出图形用户界面,主要有命令按钮、静态文本框、编辑框等三种用户控件,其中命令按钮又有开启视频、标定处理、判断处理、关闭视频及成绩查询等五种触发事件;静态文本框又有学生姓名、测量值、信息反馈,可进行必要的文字说明和提不;编辑框可完成信息的输入输出,与静态文本框对应。 [0025] 1. initialization: Run the executable file will pop up a graphical user interface, there are command buttons, static text boxes, edit boxes, three user controls, which have open video command button, the calibration process, judgment process, Close video and performance inquiries in five different trigger events; static text box have the student's name, measurement, feedback, make the necessary text and not to mention; edit box to be completed by the input and output information, corresponding to the static text box.

[0026] 2.开启视频:单击该命令按钮后,利用通用串行总线USB接口完成计算机与(XD 图像传感器间的数据通信,可获取检测区实时动态场景,并在动态图像显示区域显示。 [0026] 2. Turn on the video: the command button click, using a universal serial bus USB interface for data communication between the computer and (XD image sensor may obtain real-time dynamic scene detection zone, and the moving image displayed in the display area.

[0027] 3.标定处理:由于图像处理获取的尺寸单位为像素,而实际尺寸单位为毫米,那么必须进行单位换算。 [0027] 3. Calibration process: since the image processing unit acquires a size of pixels, the actual size of millimeters, it must be unit conversion. 标定处理能够完成单位换算,获取其比值R,单位为毫米/像素。 To complete the calibration processing unit conversion, obtaining the ratio R, in mm / pixel. 此操作须在判断处理前完成,每次物距(镜头与工件的距离)变化后要重新标定。 This operation must be completed before the determination process, after each object distance (the distance between the lens and the workpiece) changes to re-calibrate. 标定处理时,将标准件摆放在检测区(球积分光源正下方),然后单击该命令按钮,自动完成毫米与像素间的单位换算,获取比值R。 When the calibration process, the standard display in the detection region (just below the light integrating sphere), and then click on the command button, automatically millimeters between the pixel unit conversion, obtaining the ratio R. 与该系统配套的标准件为Φ40. 00mm。 Supporting the system as a standard Φ40. 00mm.

[0028] 4.判断处理:学生将待测工件放到检测区,然后填写姓名和测量值,单击该命令按钮,则自动输出反馈信息。 [0028] 4. Analyzing process: Students workpiece into the detection zone to be tested, and then fill in the name measurements, clicking the command button, automatically outputs the feedback information. 其具体过程:计算机采集检测区内的工件图像,进行图像灰度化、二值化、边缘检测,进行霍夫变换检测圆,最后得到工件的直径像素值,并与所述步骤3) 处理后获取比值R相乘,确定工件直径的视觉测量尺寸,并与学生的手工测量值进行比较, 根据比较的结果给出手工测量结果正确与否的信息反馈,因此学生可以及时了解自己的测量情况,实现自己测量、自己评分、自己分析从而达到自主学习的效果。 The specific process: computer workpiece image acquisition detection zone, the gradation of an image, binarization, edge detection, the Hough transform for detection circle, a diameter of the final pixel value of the workpiece, and 3) post-processing step obtaining the ratio R multiplied by the diameter of the workpiece is determined visual measurements and compared with student's manual measurements, manual measurement results are given correct or not based on the result of feedback, so the student can understand their own measurement situation, measuring realize their own score, so as to achieve self-analysis of their own learning.

[0029] 5.关闭视频:鼠标单击该命令按钮后,停止C⑶图像传感器的工作,有利于延长其使用寿命。 [0029] 5. Close Video: After-click the command button, stop working C⑶ image sensor, help to extend its service life.

[0030] 6.成绩查询:成绩统计主要包括测量时间、学生姓名、测量结果等信息,为教师提供了学生在某个时间段内测量情况。 [0030] 6. The query results: results including statistical information to measure time, the student's name, measurements, etc., to provide a student-teacher in a period measurement situations. 根据成绩查询结果,教师可以了解到各个学生实际操作情况。 According to the results of the query results, teachers can learn each student in action. 对于全班同学存在的错误点进行分类,分别处理:对于大多同学出现的错误点,可以集中讲解;对于少部分同学出现的错误点,可以单独辅导,做到有的放矢,提高教师的工作效率,也使学生更好地利用时间,提高学习效率。 Be wrong for the whole class of students presence points classification, were treated: error point for most students appear to be focused on to explain; error for a small number of points students appear to be counseling alone, be targeted to improve the efficiency of teachers, too to enable students to make better use of time and improve learning efficiency.

Claims (5)

  1. 1. 一种基于机器视觉技术的新型课堂教学模式,包括硬件和软件两部分。 A new teaching model based on machine vision technology, including hardware and software in two parts. 硬件部分主要有:USB接口的CCD图像传感器、球积分光源、计算机、Φ40. 00mm标准件及待测工件。 Hardware mainly has:. CCD image sensor USB interface, integrating sphere light source, a computer, Φ40 00mm standard parts and workpiece to be measured. 软件用到基于机器视觉技术的工件尺寸检测自主学习软件。 Based on workpiece size detection software uses machine vision technology self-learning software. 其特征在于,包括以下主要步骤: 1) 程序初始化; 2) 开启视频; 3) 标定处理; 4) 判断处理; 5) 关闭视频; 6) 成绩查询。 Characterized in that it comprises the following main steps: 1) initialization; 2) activate a video; 3) calibration process; 4) determination processing; 5) off the video; 6) the query results.
  2. 2. 根据权利要求1所述的一种基于机器视觉技术的新型课堂教学模式,其特征是,所述步骤1)程序初始化的具体步骤为:运行可执行文件,将弹出图形用户界面,主要有命令按钮、静态文本框、编辑框等三种用户控件,其中命令按钮又有开启视频、标定处理、判断处理、关闭视频及成绩查询等五种触发事件;静态文本框又有姓名、测量值、信息反馈,可进行必要的文字说明和提不;编辑框可完成信息的输入输出,与静态文本框对应。 According to claim 1, one of the new teaching model based on machine vision technology, characterized in that the specific step of the step 1) initialization procedure are: running the executable file, the graphical user interface will pop up, mainly command buttons, static text boxes, edit boxes, three user controls, which have open video command button, the calibration process, judgment process, turn off the video and performance inquiries in five different trigger events; there are static text box name, the measured value, feedback information, the text may be necessary and not to mention; edit box input and output information to be completed, which corresponds to the static text box.
  3. 3. 根据权利要求1所述的一种基于机器视觉技术的新型课堂教学模式,其特征是,所述步骤3)标定处理的具体步骤为:每次物距变化后要重新标定,把标准件摆放在检测区, 然后单击该命令按钮,自动完成毫米与像素间的单位换算,其比值为R。 According to claim 1, one of the new teaching model based on machine vision technology, characterized in that the specific step of said step 3) the labeling process is as follows: after each pitch change to object re-calibration, the standard placed in the detection zone, and then click on the command button, automatically millimeters and unit conversion between pixels, which is the ratio R. 与该系统配套的标准件为Φ 40. 00mm。 The system supporting the standard is Φ 40. 00mm.
  4. 4. 根据权利要求1所述的一种基于机器视觉技术的新型课堂教学模式,其特征是,所述步骤4)判断处理的具体步骤为:学生将待测工件放到检测区,然后填写姓名和测量值, 单击该命令按钮,则自动输出反馈信息。 According to one of the claim 1, based on the new teaching model machine vision technology, characterized in that the specific step of Step 4) treatment is determined: the workpiece to be measured into the student detection zone, and then fill in the name and measurements, clicking the command button, automatically outputs the feedback information. 其具体过程:计算机采集检测区内的工件图像,进行图像灰度化、二值化、边缘检测,进行霍夫变换检测圆,最后得到工件的直径像素值,并与所述步骤3)处理后获取比值R相乘,确定工件直径的视觉测量尺寸,并与学生的手工测量值进行比较,根据比较的结果给出手工测量结果正确与否的信息反馈,因此学生可以及时了解自己的测量情况,实现自己测量、自己评分、自己分析从而达到自主学习的效果。 The specific process: computer workpiece image acquisition detection zone, the gradation of an image, binarization, edge detection, the Hough transform for detection circle, a diameter of the final pixel value of the workpiece, and 3) post-processing step obtaining the ratio R multiplied by the diameter of the workpiece is determined visual measurements and compared with student's manual measurements, manual measurement results are given correct or not based on the result of feedback, so the student can understand their own measurement situation, measuring realize their own score, so as to achieve self-analysis of their own learning.
  5. 5. 根据权利要求1所述的一种基于机器视觉技术的新型课堂教学模式,其特征是,所述步骤6)成绩查询的具体步骤为:根据成绩查询结果,教师可以了解到各个学生实际操作情况。 According to claim 1, one of the new teaching model based on machine vision technology, wherein the step 6) of specific steps query results: The performance results of the query, the teacher can understand each student practice Happening. 对于全班同学存在的错误点进行分类,分别处理:对于大多同学出现的错误点,可以集中讲解;对于少部分同学出现的错误点,可以单独辅导,做到有的放矢,提高了教师的工作效率,也使学生更好地利用时间,提高学习效率。 Be wrong for the whole class of students presence points classification, were treated: error point for most students appear to be focused on to explain; error for a small number of points students appear to be counseling alone, be targeted to improve the efficiency of teachers, students also make better use of time and improve learning efficiency.
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