WO2020082305A1 - 一种母线槽尺寸检测***、方法和装置 - Google Patents

一种母线槽尺寸检测***、方法和装置 Download PDF

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Publication number
WO2020082305A1
WO2020082305A1 PCT/CN2018/111959 CN2018111959W WO2020082305A1 WO 2020082305 A1 WO2020082305 A1 WO 2020082305A1 CN 2018111959 W CN2018111959 W CN 2018111959W WO 2020082305 A1 WO2020082305 A1 WO 2020082305A1
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Prior art keywords
busbar
bus bar
busway
difference
length
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PCT/CN2018/111959
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English (en)
French (fr)
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刘鹏
李秋生
薛春芳
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华北电力大学扬中智能电气研究中心
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Priority to PCT/CN2018/111959 priority Critical patent/WO2020082305A1/zh
Publication of WO2020082305A1 publication Critical patent/WO2020082305A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G01B11/04—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/14—Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G5/00—Installations of bus-bars

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  • the invention relates to the technical field of busway product detection, and in particular to a busway size detection system, method and device.
  • the bus trunk system (referred to as the bus duct for short) is a special device in the low-voltage power supply system that is responsible for transmitting and distributing electrical energy. Because of its large current carrying capacity, high safety protection level, convenient distribution of electrical energy, safety and reliability, it is widely used.
  • bus ducts There are many application scenarios of bus ducts, which has led to the production and use of bus ducts by many related companies. However, it is difficult to achieve uniform standards for the size detection of bus ducts. The traditional busbar detection is focused on insulation, fire rating, short-circuit withstand strength, etc., but it ignores the relevant size specifications. The size specifications are controlled by traditional tools.
  • the size of the busway is obtained by manual measurement, the measurement accuracy is difficult to guarantee, and the efficiency is low.
  • mass production of products a lot of manpower and material resources are wasted.
  • the purpose of the embodiments of the present invention is to provide a busway size detection system, method and device to automatically complete the busway size detection, improve the efficiency and accuracy of busway size measurement, improve production efficiency, reduce the need for manpower, and reduce the enterprise's Cost of production.
  • the busway size detection system includes an industrial control host, and a camera, a position sensor and a first display connected to the industrial control host, wherein:
  • the position sensor is opposite to the bus bar slot detection position, and is used to monitor whether the bus bar slot is located in the bus bar slot detection position;
  • the camera is opposite to the detection position of the bus bar, and is used for collecting images of the bus bar;
  • the industrial control host is used to: control the camera to collect images of the busway based on the busway at the busway detection position, and calculate the phase interval of the busway and the length difference of the busbar according to the busway image;
  • the first display is used to display the phase spacing of the busbar slot and the length difference of the busbar.
  • the busbar slot size detection system further includes an alarm device connected to the industrial control host, the industrial control host is also used to: obtain the phase spacing setting value and the busbar length difference setting value, calculate the phase spacing and The first difference between the set values of the phase spacing, and the second difference between the length difference between the busbar and the set length of the busbar, when the first difference is greater than the first set threshold or the second difference is greater than When the second threshold is set, the alarm device issues an alarm.
  • the busbar slot size detection system further includes a fill light, and the fill light is opposite to the busbar detection position.
  • the phase spacing includes the spacing between any two adjacent bus bars; the bus bar includes a first bus bar and a second bus bar, and the length of any second bus bar is shorter than the first A length of a bus bar, and the difference in length of the bus bar includes a difference in length between any second bus bar and the first bus bar.
  • the busway size detection system further includes a server connected to the industrial control host, and a second display connected to the server.
  • the industrial control host sends the calculated data to the server for storage. Two display displays are used to display the data.
  • the position sensor When transporting the busway to the busway detection position, the position sensor can detect that the busway is in place and send the first control signal to the industrial control host. After receiving the first control signal, the industrial control host controls the camera to collect the busway image, thus Obtain the busbar image, the main control host reuse program, combined with computer vision detection technology to calculate the busbar phase spacing and busbar length difference, and the first display will display the above phase spacing and busbar length difference to facilitate work People view.
  • the application of the busway size detection system can automatically complete the busway size detection, improve the efficiency and accuracy of the busway size measurement, improve production efficiency, reduce the need for manpower and supporting equipment required for manual measurement, reducing the company's Cost of production.
  • an embodiment of the present invention also provides a busway size detection method applied to the busway size detection system in the technical solution of the present invention.
  • the method includes:
  • the busbar image calculate the phase interval of the busbar and the difference in the length of the busbar.
  • the above-mentioned busbar slot size detection method further includes:
  • the calculation of the phase interval of the bus bar and the difference in length of the bus bar according to the bus bar image specifically includes:
  • the phase distance and the length difference of the bus bar are calculated according to the straight line information.
  • the calculation of the phase distance and the length difference of the bus bar according to the straight line information further includes:
  • the straight line fitting process includes a strategy of taking the middle point of the left and right end points to obtain processed straight line information
  • the phase distance and the length difference of the bus bar are calculated.
  • the busbar slot size detection can be automatically completed according to the above busbar slot size detection method, improving the efficiency and accuracy of the busbar slot size measurement, improving the production efficiency, reducing the manpower required, and reducing the production cost of the enterprise.
  • embodiments of the present invention also provide a busway size detection device applied to the busway size detection system in the technical solution of the present invention, the detection device including:
  • the control unit controls the camera to collect images of the busway based on the location of the busway in the busway detection position;
  • the processing unit calculates the phase interval of the bus bar and the length difference of the bus bar according to the bus bar image.
  • the above-mentioned busbar slot size detection device can automatically complete the busbar slot size detection, improve the efficiency and accuracy of the busbar slot size measurement, improve the production efficiency, reduce the manpower required, and reduce the production cost of the enterprise.
  • FIG. 1 is a schematic diagram of a busway size detection system in an embodiment of the invention
  • FIG. 2 is a schematic structural diagram of a bus duct in another embodiment of the present invention.
  • FIG. 3 is a schematic flowchart of a method for detecting the size of a bus duct in another embodiment of the present invention
  • FIG. 4 is a schematic flow chart of a method for detecting the size of a bus duct in another embodiment of the invention.
  • FIG. 5 is a schematic diagram of a busbar size detection device in another embodiment of the present invention.
  • a busway size detection system provided by an embodiment of the present invention includes an industrial control host 1, and a camera 2, a position sensor 3 and a first display 4 connected to the industrial control host 1, wherein :
  • the position sensor 3 is opposite to the busway detection position 9 and is used to monitor whether the busway 10 is located at the busway detection position 9;
  • the camera 2 is opposite to the bus duct detection bit 9 and is used to collect the bus duct image
  • the industrial control host 1 is used to: when the bus bar 10 is located at the bus bar detection position, control the camera 2 to collect images of the bus bar, and calculate the phase spacing of the bus bar 10 and the length difference of the bus bar according to the bus bar image;
  • the first display 4 is used to display the phase spacing of the bus bar 10 and the difference in length of the bus bar.
  • the busway size detection system in the embodiment of the present application can be applied to the busway production line.
  • the position sensor 3 can detect that the busway 10 is in place and send it to the industrial control host 1
  • the industrial control host 1 receives the first control signal, and controls the camera 2 to collect the busbar image to obtain the busbar image.
  • the main control host reuses the program, combined with computer vision detection technology to calculate the phase of the busbar 10
  • the difference between the distance and the length of the bus bar, and the first display 4 displays the above-mentioned distance between the phase and the length of the bus bar to facilitate the staff to view.
  • the application of the busway size detection system can automatically complete the busway size detection, improve the efficiency and accuracy of the busway size measurement, improve the production efficiency, reduce the need for manpower and supporting equipment required for manual measurement, reducing the enterprise's Cost of production.
  • the camera 2 and the infrared device work together, and the position sensor 3 is a position extraction device. Only when the product moves to the vertical camera 2 position, the camera 2 will be activated to work. Therefore, the camera 2 can be operated only when the busway 10 reaches the busway detection position 9, so as to obtain more accurate image information, the collected image quality is better, and distortion or blurring defects are less likely to occur, thereby reducing accuracy errors.
  • this solution can also reduce the amount of data and improve the calculation speed.
  • the type of the position sensor is not limited.
  • the position sensor may be an infrared sensor, an ultrasonic sensor, or a touch sensor. Select the appropriate sensor according to the actual situation.
  • the phase spacing includes the spacing between any two adjacent bus bars 11; the bus bar 11 includes a first bus bar 12 and a second bus bar 13, and the length of any second bus bar 13 is shorter than the first
  • the length of the row 12 and the difference in the length of the bus bar include the difference in length between any second bus bar 13 and the first bus bar 12.
  • the phase interval includes d1, d2, and d3.
  • the first busbar 12 refers to the longest busbar 11 among the busbars 11, and r1, r2, and r3 in FIG. 2 are the busbars. Length difference. It is worth noting that the length difference of the busbars only needs to be based on one of the busbars 11, and the longest busbar in the figure is used as a reference, which is only a specific embodiment.
  • the busbar slot size detection system further includes an alarm device
  • the industrial control host 1 is also used to: obtain the phase gap setting value and the bus bar length difference setting value, calculate the phase spacing and the phase spacing setting value of the first The difference, and the second difference between the length difference of the busbar and the set value of the difference between the length of the busbar and the length of the busbar, when the first difference is greater than the first set threshold or the second difference is greater than the second set threshold, the alarm device issues alarm.
  • the phase spacing and bus length difference obtained by the detection are compared with the set values.
  • the deviation detected exceeds the standard, the product is considered to be defective, the alarm device issues an alarm, and the staff can Products are processed to prevent defective products from entering the market.
  • the first display 4 may display information such as the product number, the detection date, the phase spacing of the bus bar and the difference in length of the busbar, the set value of the phase spacing and the difference in the length of the busbar, and alarm information.
  • the display content can be set according to actual needs.
  • the busway size detection system further includes a fill light 5.
  • the fill light 5 is opposite to the busway detection position 9.
  • the fill light 5 illuminates the bus bar at the bus bar detection position 9 to increase the brightness of the light emitted by the bus bar, thereby improving the clarity of the bus bar image captured by the camera 2 and reducing the image processing work.
  • the efficiency and accuracy of image processing, the obtained size information is more accurate.
  • the type of the fill light 5 can be selected according to the lighting conditions of the applied plant.
  • the busway size detection system further includes a server 6 connected to the industrial control host 1 and a second display 7 connected to the server 6.
  • the industrial control host 1 sends the calculated data to the server 6 is stored, and the second display 7 is displayed for displaying data.
  • the embodiment of the present application further includes a server 6 for storing data.
  • the industrial control host sends and stores the processed data information to the server 6.
  • the display area connected to the server 6 can remotely view related data, which is convenient for production management. Please refer to FIG. 1, the power supply 8 supplies power to each device.
  • the camera 2 and the industrial control host 1 are connected through a universal serial bus (Universal Serial Bus, referred to as USB).
  • USB Universal Serial Bus
  • the camera 2 and the industrial control host 1 are connected through a USB interface, which facilitates the installation and disassembly of the camera 2 and thus facilitates later maintenance and management.
  • an embodiment of the present invention also provides a method for detecting the size of a busbar slot applied to the system for detecting the size of a busbar slot in the technical solution of the present invention.
  • Busbar slot image ; calculate the busbar slot phase distance and busbar length difference according to the busbar slot image.
  • Step 101 Control the camera to collect images of the busway based on the location of the busway in the busway detection position;
  • Step 102 Calculate the phase interval of the bus bar and the length difference of the bus bar according to the bus bar image.
  • the busbar slot size detection can be automatically completed according to the above busbar slot size detection method, improving the efficiency and accuracy of the busbar slot size measurement, improving the production efficiency, reducing the manpower required, and reducing the production cost of the enterprise.
  • the method for detecting the size of the busway further includes:
  • the method further includes the following steps:
  • Step 103 Obtain the set value of the phase interval and the set value of the length difference of the bus bar;
  • Step 104 Calculate the first difference between the phase spacing and the set value of the phase spacing, and the second difference between the length difference of the busbar and the set value of the length difference of the busbar;
  • Step 105 When the first difference is greater than the first set threshold or the second difference is greater than the second set threshold, an alarm is issued.
  • the phase spacing and bus length difference obtained by the detection are compared with the set values.
  • the deviation detected exceeds the standard, the product is considered to be defective, the alarm device issues an alarm, and the staff can Products are processed to prevent defective products from entering the market.
  • calculating the phase interval of the bus bar and the length difference of the bus bar according to the bus bar image specifically includes:
  • the distance between the phase and the length of the busbar are calculated.
  • the bus bar contained in the collected plane image is roughly a straight line, so the core method is straight line detection based on Hough transform. Before straight line detection, it is necessary to preprocess the collected original image, which will make the subsequent straight line detection more accurate.
  • the pre-processing includes binarizing, corroding, and expanding the busbar image.
  • the gray range of an 8-bit binary image is distributed between 0 and 255. It is a continuous sequence of information for the pixels of the entire image.
  • the function of binarization is to determine a value ⁇ , which is between 0 and 0. Between 255, make the value less than ⁇ equal to 0, and the value greater than ⁇ equal to 255. In this way, the entire image becomes a black and white image, removing a lot of noise, which is convenient for post-processing.
  • Corrosion treatment and expansion treatment are also filtering operations. After image binarization, although a lot of background noise is filtered out, there are still many undesired background noises, most of which are connected areas. Corrosion and dilation operations are good for dealing with such noises.
  • Hough Transform is a feature extraction technology in image processing. It uses a voting algorithm to detect objects with specific shapes. The process calculates the local maximum value of the cumulative result in a parameter space to obtain a set conforming to the specific shape as the Hough transform result.
  • the Hough transform uses the transformation between two coordinate spaces to map a curve or a straight line in one space to a point in another coordinate space to form a peak, thereby turning the problem of detecting arbitrary shapes into a statistical peak problem.
  • the main idea of the Hough transform is to exchange the parameters and variables of the equation, that is, use x and y as known quantities, and k and b as variable coordinates, so
  • the coordinates of the parameter space are expressed as ⁇ and ⁇ in polar coordinates.
  • the phase distance and the length difference of the bus bar are calculated according to the straight line information of the bus bar slot.
  • the value shows that the above-mentioned straight line information means that each bus bar is represented by a straight line, and the phase spacing of the bus bar and the length difference of the bus bar can be calculated.
  • phase distance and the length difference of the busbar are calculated according to the straight line information, and further include:
  • the straight line fitting process includes the strategy of taking the middle point of the left and right endpoints to obtain the processed straight line information
  • the phase distance and the length difference of the busbar are calculated.
  • the Hough transform will detect multiple straight lines, and the data errors brought by using different straight lines are quite different. Therefore, the straight line fitting strategy is very important.
  • the present invention adopts the strategy of taking the middle point of the left and right end points, which can reduce the error in measurement.
  • an embodiment of the present invention also provides a busway size detection device applied to the busway size detection system in the technical solution of the present invention.
  • the detection device includes:
  • the control unit 100 controls the camera to collect images of the busway based on the location of the busway in the busway detection position;
  • the processing unit 200 calculates the phase interval of the bus bar and the length difference of the bus bar according to the bus bar image.
  • the above-mentioned busbar slot size detection device can automatically complete the busbar slot size detection, improve the efficiency and accuracy of the busbar slot size measurement, improve the production efficiency, reduce the manpower required, and reduce the production cost of the enterprise.

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Abstract

一种母线槽尺寸检测***、方法和装置，以自动完成母线槽尺寸检测，提高母线槽尺寸测量的效率和精度，提高生产效率，减少需要的人力，降低企业的生产成本。该母线槽尺寸检测***包括工控主机（1），以及与工控主机（1）连接的相机（2）、位置传感器（3）和第一显示器（4），其中：位置传感器（3）与母线槽检测位（9）相对，用于监测母线槽（10）是否位于母线槽检测位（9）；相机（2）与母线槽检测位（9）相对，用于采集母线槽图像；工控主机（1）用于：当母线槽（10）位于母线槽检测位（9）时控制相机（2）采集母线槽图像，根据母线槽图像计算母线槽（10）的相间距和母排长度差；第一显示器（4）用于显示母线槽（10）的相间距和母排长度差。

Description

一种母线槽尺寸检测***、方法和装置 技术领域
本发明涉及母线槽产品检测技术领域，特别是涉及一种母线槽尺寸检测***、方法和装置。
背景技术
母线干线***(简称母线槽)是低压供电***中负责传输电能、分配电能的一种专用设备。由于其载流能力大、安全防护等级高、分配电能方便、安全可靠等优点而被广泛应用。母线槽应用场景较多，也就催生很多相关企业生产和使用母线槽，但是母线槽尺寸检测却难以做到统一标准。传统母线槽检测集中在绝缘性、防火等级、短路耐受强度等方面，却忽视了相关的尺寸规格，尺寸规格把控上依赖于传统工具测量。
现有技术中采用人工测量的方式获取母线槽的尺寸，测量精度难以保证，并且效率底下，对于产品的大批量生产，需要浪费大量的人力物力。
发明内容
本发明实施例的目的是提供一种母线槽尺寸检测***、方法和装置，以自动完成母线槽尺寸检测，提高母线槽尺寸测量的效率和精度，提高生产效率，减少需要的人力，降低企业的生产成本。
本发明技术方案提供的母线槽尺寸检测***包括工控主机，以及与所述工控主机连接的相机、位置传感器和第一显示器，其中：
所述位置传感器与母线槽检测位相对，用于监测母线槽是否位于母线槽检测位；
所述相机与所述母线槽检测位相对，用于采集母线槽图像；
所述工控主机用于：基于母线槽位于母线槽检测位，控制所述相机采集母线槽图像，根据所述母线槽图像计算所述母线槽的相间距和母排长度差；
所述第一显示器用于显示所述母线槽的相间距和母排长度差。
进一步的技术方案中，母线槽尺寸检测***还包括与所述工控主机连接的警报装置，所述工控主机还用于：获取相间距设定值和母排长度差设定值，计算相间距和相间距设定值的第一差值，以及母排长度差与和母排长度差设 定值的第二差值，当所述第一差值大于第一设定阈值或者第二差值大于第二设定阈值时，所述警报装置发出警报。
进一步的技术方案中，母线槽尺寸检测***还包括补光灯，所述补光灯与所述母线槽检测位相对。
具体的技术方案中，所述相间距包括任意相邻两个母排之间的间距；所述母排包括第一母排和第二母排，任一第二母排的长度小于所述第一母排的长度，所述母排长度差包括任意第二母排与所述第一母排的长度差。
进一步的技术方案中，母线槽尺寸检测***还包括与所述工控主机连接的服务器，以及与所述服务器连接的第二显示器，所述工控主机将计算得到的数据发送至服务器存储，所述第二显示器显示用于显示所述数据。
将母线槽运输至母线槽检测位时，位置传感器可以检测到母线槽已就位，并向工控主机发送第一控制信号，工控主机接收到第一控制信号以后，控制相机采集母线槽图像，从而获得母线槽图像，主控主机再利用程序，结合计算机视觉检测技术计算得到母线槽的相间距和母排长度差，并由第一显示器将上述相间距和母排长度差显示出来，以便于工作人员查看。该实施例中母线槽尺寸检测***的应用可以自动完成母线槽尺寸检测，提高母线槽尺寸测量的效率和精度，提高生产效率，减少需要的人力以及人工测量所需的配套设备，降低了企业的生产成本。
基于相同的发明构思，本发明实施例还提供了一种应用于本发明技术方案中母线槽尺寸检测***的母线槽尺寸检测方法，该方法包括：
基于母线槽位于母线槽检测位，控制相机采集母线槽图像；
根据所述母线槽图像计算母线槽的相间距和母排长度差。
进一步的技术方案中，上述母线槽尺寸检测方法还包括：
获取相间距设定值和母排长度差设定值；
计算所述相间距和所述相间距设定值的第一差值，以及母排长度差和母排长度差设定值的第二差值；
当所述第一差值大于第一设定阈值或者第二差值大于第二设定阈值时，发出警报。
具体的技术方案中，所述根据所述母线槽图像计算母线槽的相间距和母排长度差，具体包括：
对所述母线槽图像进行二值化处理、腐蚀处理和膨胀处理，得到预处理 母线槽图像；
对所述预处理母线槽图像进行霍夫变换处理，得到母线槽的直线信息；
根据所述直线信息计算得到所述相间距和所述母排长度差。
进一步的技术方案中，所述根据所述直线信息计算得到所述相间距和所述母排长度差，还包括：
对所述直线信息进行直线拟合处理，所述直线拟合处理包括左右端点取中点的策略，得到处理后的直线信息；
根据所述处理后的直线信息，计算得到所述相间距和所述母排长度差。
本发明的技术方案中，根据上述母线槽尺寸检测方法可以自动完成母线槽尺寸检测，提高母线槽尺寸测量的效率和精度，提高生产效率，减少需要的人力，降低企业的生产成本。
基于相同的发明构思，本发明实施例还提供了一种应用于本发明技术方案中母线槽尺寸检测***的母线槽尺寸检测装置，该检测装置包括：
控制单元，基于母线槽位于母线槽检测位，控制相机采集母线槽图像；
处理单元，根据所述母线槽图像计算母线槽的相间距和母排长度差。
本发明的技术方案中，利用上述母线槽尺寸检测装置可以自动完成母线槽尺寸检测，提高母线槽尺寸测量的效率和精度，提高生产效率，减少需要的人力，降低企业的生产成本。
附图说明
为了更清楚地说明本公开实施例或相关技术中的技术方案，下面将对实施例或相关技术描述中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明一实施例中母线槽尺寸检测***的示意图；
图2为本发明另一实施例中母线槽的结构示意图；
图3为本发明另一实施例中母线槽尺寸检测方法的流程示意图；
图4为本发明另一实施例中母线槽尺寸检测方法的流程示意图；
图5为本发明另一实施例中母线槽尺寸检测装置的示意图。
附图标记：
1-工控主机；                  2-相机；
3-位置传感器；                4-第一显示器；
5-补光灯；                    6-服务器；
7-第二显示器；                8-电源；
9-母线槽检测位；              10-母线槽；
11-母排；                     12-第一母排；
13-第二母排；                 100-控制单元；
200-处理单元。
具体实施方式
为使本公开实施例的目的、技术方案和优点更加清楚，下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本公开的一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
如图1所示，本发明一实施例提供的母线槽尺寸检测***，该母线槽尺寸检测***包括工控主机1，以及与工控主机1连接的相机2、位置传感器3和第一显示器4，其中：
位置传感器3与母线槽检测位9相对，用于监测母线槽10是否位于母线槽检测位9；
相机2与母线槽检测位9相对，用于采集母线槽图像；
工控主机1用于：当母线槽10位于母线槽检测位时，控制相机2采集母线槽图像，根据母线槽图像计算母线槽10的相间距和母排长度差；
第一显示器4用于显示母线槽10的相间距和母排长度差。
可以将本申请实施例中的母线槽尺寸检测***应用于母线槽生产线，将母线槽10运输至母线槽检测位9时，位置传感器3可以检测到母线槽10已就位，并向工控主机1发送第一控制信号，工控主机1接收到第一控制信号以后，控制相机2采集母线槽图像，从而获得母线槽图像，主控主机再利用程序，结合计算机视觉检测技术计算得到母线槽10的相间距和母排长度差，并由第一显示器4将上述相间距和母排长度差显示出来，以便于工作人员查看。该实施例中母线槽尺寸检测***的应用可以自动完成母线槽尺寸检测， 提高母线槽尺寸测量的效率和精度，提高生产效率，减少需要的人力以及人工测量所需的配套设备，降低了企业的生产成本。
本申请的实施例中，相机2与红外装置的协同工作，位置传感器3为位置提取装置，只有当产品运动到垂直相机2位置时，相机2才会被激活工作。因此，可以使相机2在母线槽10到达母线槽检测位9时才工作，从而获得较为准确的图像信息，采集到的图像质量较好，不易出现扭曲或者模糊的缺陷，从而可以减少精度误差。此外，与连续拍摄视频方案相比，本方案还可以减少数据量，提高计算速度。
具体的实施例中，位置传感器的类型不限，具体的，位置传感器可以为红外传感器、超声波传感器或者触碰传感器。根据实际情况选择合适的传感器即可。
请参考图2，相间距包括任意相邻两个母排11之间的间距；母排11包括第一母排12和第二母排13，任一第二母排13的长度小于第一母排12的长度，母排长度差包括任意第二母排13与第一母排12的长度差。
如图2所示，相间距包括d1、d2和d3，第一母排12指的是母排11中长度最长的一根母排11，图2中的r1、r2和r3即为母排长度差。值得说明的是，母排长度差只需以其中一条母排11为基准即可，图中以最长的一根母排作为基准，只是一个具体的实施例。
进一步的实施例中，母线槽尺寸检测***还包括警报装置，工控主机1还用于：获取相间距设定值和母排长度差设定值，计算相间距和相间距设定值的第一差值，以及母排长度差与和母排长度差设定值的第二差值，当第一差值大于第一设定阈值或者第二差值大于第二设定阈值时，警报装置发出警报。
该实施例中，将检测获得的相间距以及母排长度差分别与设定值进行对比，当检测到出现偏差超出标准的，则认为产品存在缺陷，报警装置发出警报，工作人员则可以对相关产品进行处理，以防残次品进入市场。
具体的实施例中，第一显示器4可以显示产品编号、检测日期、母线槽的相间距和母排长度差、相间距设定值和母排长度差设定值，以及警报信息等信息，具体显示内容可以根据实际需求设定。
请继续参考图1，进一步的实施例中，母线槽尺寸检测***还包括补光灯5，补光灯5与母线槽检测位9相对。
该实施例中，补光灯5将灯光照在位于母线槽检测位9的母线槽，提高母线槽出的光线亮度，从而提高相机2抓拍的母线槽图像较为清晰，减少图像处理的工作，提高图像处理的效率和精度，获得的尺寸信息较为准确。具体的，补光灯5的类型可以根据应用的厂房的光照条件选择。
请继续参考图1，进一步的实施例中，母线槽尺寸检测***还包括与工控主机1连接的服务器6，以及与服务器6连接的第二显示器7，工控主机1将计算得到的数据发送至服务器6存储，第二显示器7显示用于显示数据。
本申请实施例中，还包括用于存储数据的服务器6，工控主机将处理得到的数据信息发送并存入服务器6，与服务器6连接的显示区则可以远程查看相关数据，便于生产管理。请参考图1，由电源8为各个设备供电。
具体的实施例中，相机2与工控主机1通过通用串行总线(Universal Serial Bus，简称：USB)连接。该实施例中，相机2与工控主机1通过USB接口连接，便于安装和拆卸相机2，从而便于后期的维护与管理。
基于相同的发明构思，本发明实施例还提供了一种应用于本发明技术方案中母线槽尺寸检测***的母线槽尺寸检测方法，该方法包括：基于母线槽位于母线槽检测位，控制相机采集母线槽图像；根据母线槽图像计算母线槽的相间距和母排长度差。
请参考图3，本申请的母线槽尺寸检测方法一个具体的实施例中，包括以下步骤：
步骤101、基于母线槽位于母线槽检测位，控制相机采集母线槽图像；
步骤102、根据母线槽图像计算母线槽的相间距和母排长度差。
本发明的技术方案中，根据上述母线槽尺寸检测方法可以自动完成母线槽尺寸检测，提高母线槽尺寸测量的效率和精度，提高生产效率，减少需要的人力，降低企业的生产成本。
进一步的实施例中，母线槽尺寸检测方法还包括：
获取相间距设定值和母排长度差设定值；
计算相间距和相间距设定值的第一差值，以及母排长度差和母排长度差设定值的第二差值；
当第一差值大于第一设定阈值或者第二差值大于第二设定阈值时，发出警报。
请参考图4，本申请的母线槽尺寸检测方法另一个具体的实施例中，还包括以下步骤：
步骤103、获取相间距设定值和母排长度差设定值；
步骤104、计算相间距和相间距设定值的第一差值，以及母排长度差和母排长度差设定值的第二差值；
步骤105、当第一差值大于第一设定阈值或者第二差值大于第二设定阈值时，发出警报。
该实施例中，将检测获得的相间距以及母排长度差分别与设定值进行对比，当检测到出现偏差超出标准的，则认为产品存在缺陷，报警装置发出警报，工作人员则可以对相关产品进行处理，以防残次品进入市场。
具体的实施例中，根据母线槽图像计算母线槽的相间距和母排长度差，具体包括：
对母线槽图像进行二值化处理、腐蚀处理和膨胀处理，得到预处理母线槽图像；
对预处理母线槽图像进行霍夫变换处理，得到母线槽的直线信息；
根据直线信息计算得到相间距和母排长度差。
由于母排垂直摄像机方向，所以采集到的平面图像所含的母排大致为直线，所以核心方法是基于霍夫变换的直线检测。在直线检测之前，需要对采集到的原始图像进行预处理，这样会使后续的直线检测更加精确。
具体的，预处理包括对母线槽图像进行二值化处理、腐蚀处理和膨胀处理。一幅8位二进制图像的灰度范围分布在0～255之间，对整幅图像的像素来说是一个连续的序列信息，二值化的作用就是确定一个值α，这个值α在0～255之间，使得小于α的值等于0，大于α的值等于255。这样整幅图像就变成黑白色的图像，去除了大量的噪声，方便后期处理。腐蚀处理和膨胀处 理，也是滤波的操作方式。图像二值化后，虽然滤除大量背景噪声，但是还是存在许多不需要的背景噪声，其中大多数的背景噪声为连通区域，腐蚀和膨胀操作对于处理这种噪声，效果良好。
霍夫变换(Hough Transform)是图像处理中的一种特征提取技术，它通过一种投票算法检测具有特定形状的物体。该过程在一个参数空间中通过计算累计结果的局部最大值得到一个符合该特定形状的集合作为霍夫变换结果。霍夫变换运用两个坐标空间之间的变换将在一个空间中具有相同形状的曲线或直线映射到另一个坐标空间的一个点上形成峰值，从而把检测任意形状的问题转化为统计峰值问题。一条直线在直角坐标系下可以用y＝kx+b表示，霍夫变换的主要思想是将该方程的参数和变量交换，即用x和y作为已知量，k和b作为变量坐标，所以直角坐标系下的直线y＝kx+b在参数空间表示为点(k，b)，而一个点(x1，y1)在直角坐标系下表示为一条直线y1＝x1·k+b，其中(k，b)是该直线上的任意点。为了计算方便，将参数空间的坐标表示为极坐标下的γ和θ。因为同一条直线上的点对应的(γ,θ)是相同的，因此可以先将图片进行边缘检测，然后对图像上每一个非零像素点，在参数坐标下变换为一条直线，那么在直角坐标下属于同一条直线的点便在参数空间形成多条直线并内交于一点。因此可用该原理进行直线检测，从而得到母线槽的直线信息。
在根据母线槽的直线信息计算得到相间距和母排长度差。
值的说明的是，上述直线信息，就是用直线表示各个母排，则可以计算出母排的相间距和母排长度差。
进一步的实施例中，根据直线信息计算得到相间距和母排长度差，还包括：
对直线信息进行直线拟合处理，直线拟合处理包括左右端点取中点的策略，得到处理后的直线信息；
根据处理后的直线信息，计算得到相间距和母排长度差。
霍夫变换会检测到多条直线，采用不同的直线带来的数据误差截然不同较大。因此直线拟合策略至关重要，本发明采取左右端点取中点的策略，可以减少测量上的误差。
请参考图5，基于相同的发明构思，本发明实施例还提供了一种应用于本 发明技术方案中母线槽尺寸检测***的母线槽尺寸检测装置，该检测装置包括：
控制单元100，基于母线槽位于母线槽检测位，控制相机采集母线槽图像；
处理单元200，根据母线槽图像计算母线槽的相间距和母排长度差。
本发明的技术方案中，利用上述母线槽尺寸检测装置可以自动完成母线槽尺寸检测，提高母线槽尺寸测量的效率和精度，提高生产效率，减少需要的人力，降低企业的生产成本。
显然，本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。

Claims (10)

  1. 一种母线槽尺寸检测***，其特征在于，包括工控主机，以及与所述工控主机连接的相机、位置传感器和第一显示器，其中：
    所述位置传感器与母线槽检测位相对，用于监测母线槽是否位于母线槽检测位；
    所述相机与所述母线槽检测位相对，用于采集母线槽图像；
    所述工控主机用于：当母线槽位于母线槽检测位时，控制所述相机采集母线槽图像，根据所述母线槽图像计算所述母线槽的相间距和母排长度差；
    所述第一显示器用于显示所述母线槽的相间距和母排长度差。
  2. 如权利要求1所述的母线槽尺寸检测***，其特征在于，还包括与所述工控主机连接的警报装置，所述工控主机还用于：获取相间距设定值和母排长度差设定值，计算相间距和相间距设定值的第一差值，以及母排长度差与和母排长度差设定值的第二差值，当所述第一差值大于第一设定阈值或者第二差值大于第二设定阈值时，所述警报装置发出警报。
  3. 如权利要求1所述的母线槽尺寸检测***，其特征在于，还包括补光灯，所述补光灯与所述母线槽检测位相对。
  4. 如权利要求1所述的母线槽尺寸检测***，其特征在于，所述相间距包括任意相邻两个母排之间的间距；所述母排包括第一母排和第二母排，任一第二母排的长度小于所述第一母排的长度，所述母排长度差包括任意第二母排与所述第一母排的长度差。
  5. 如权利要求1～4任一项所述的母线槽尺寸检测***，其特征在于，还包括与所述工控主机连接的服务器，以及与所述服务器连接的第二显示器，所述工控主机将计算得到的数据发送至服务器存储，所述第二显示器显示用于显示所述数据。
  6. 一种应用于权利要求1所述的母线槽尺寸检测***的母线槽尺寸检测方法，其特征在于，包括：
    基于母线槽位于母线槽检测位，控制相机采集母线槽图像；
    根据所述母线槽图像计算母线槽的相间距和母排长度差。
  7. 如权利要求6所述的母线槽尺寸检测方法，其特征在于，还包括：
    获取相间距设定值和母排长度差设定值；
    计算所述相间距和所述相间距设定值的第一差值，以及母排长度差和母排长度差设定值的第二差值；
    当所述第一差值大于第一设定阈值或者第二差值大于第二设定阈值时，发出警报。
  8. 如权利要求6或7所述的母线槽尺寸检测方法，其特征在于，所述根据所述母线槽图像计算母线槽的相间距和母排长度差，具体包括：
    对所述母线槽图像进行二值化处理、腐蚀处理和膨胀处理，得到预处理母线槽图像；
    对所述预处理母线槽图像进行霍夫变换处理，得到母线槽的直线信息；
    根据所述直线信息计算得到所述相间距和所述母排长度差。
  9. 如权利要求8所述的母线槽尺寸检测方法，其特征在于，所述根据所述直线信息计算得到所述相间距和所述母排长度差，还包括：
    对所述直线信息进行直线拟合处理，所述直线拟合处理包括左右端点取中点的策略，得到处理后的直线信息；
    根据所述处理后的直线信息，计算得到所述相间距和所述母排长度差。
  10. 一种应用于权利要求1所述的母线槽尺寸检测***的母线槽尺寸检测装置，其特征在于，包括：
    控制单元，基于母线槽位于母线槽检测位，控制相机采集母线槽图像；
    处理单元，根据所述母线槽图像计算母线槽的相间距和母排长度差。
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CN102901444A (zh) * 2012-08-29 2013-01-30 浙江大学 一种基于mp小波滤波的零件尺寸检测方法及其检测***
CN103322913A (zh) * 2013-05-31 2013-09-25 上海市电力公司 一种gis内部母线安装质量检测***
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CN106025971A (zh) * 2016-07-20 2016-10-12 新疆特变电工自控设备有限公司 一种密集型母线槽
CN207638292U (zh) * 2017-10-12 2018-07-20 威腾电气集团股份有限公司 一种高压母线专用散热型母线槽

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CN201964873U (zh) * 2010-10-18 2011-09-07 东莞市三姆森光电科技有限公司 一种全自动光学尺寸检测***
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