CN203163699U - Automobile drum brake friction plate detection system - Google Patents

Automobile drum brake friction plate detection system Download PDF

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CN203163699U
CN203163699U CN 201320177858 CN201320177858U CN203163699U CN 203163699 U CN203163699 U CN 203163699U CN 201320177858 CN201320177858 CN 201320177858 CN 201320177858 U CN201320177858 U CN 201320177858U CN 203163699 U CN203163699 U CN 203163699U
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friction plate
displacement sensor
drum brake
automobile drum
brake friction
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赖剑锋
曹丽娟
王汝发
王宇
潘士涛
于克丽
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Yantai Automobile Engineering Professional College
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Yantai Automobile Engineering Professional College
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Abstract

本实用新型提供一种汽车鼓式制动器摩擦片检测系统,属于自动控制检测领域,该系统由CCD摄像头、图像采集器、计算机、数据采集卡、四个位移传感器组成,CCD摄像头与图像采集卡相连,位移传感器与数据采集器相连,图像采集卡、数据采集卡与计算机相连。同侧位移传感器、不同侧位移传感器分别获取摩擦片垂直高度、弦长信息,经过数据采集卡送至计算机,将CCD摄像头获取视频图像,经过图像采集器进行处理,获取该摩擦片弧长信息送入计算机,利用实际弦长测量值与图像显示弦长所占像素之间比例,获取图像中该摩擦片弧长所占像素对应的实际弧长值,将获取的该摩擦片的直径、弧长、垂直高度信息与标准直径、弧长、垂直高度信息进行比较,并产生实时报警。

Figure 201320177858

The utility model provides an automobile drum brake friction plate detection system, which belongs to the field of automatic control detection. The system is composed of a CCD camera, an image collector, a computer, a data acquisition card and four displacement sensors. The CCD camera is connected with the image acquisition card. , the displacement sensor is connected with the data collector, and the image acquisition card and the data acquisition card are connected with the computer. The displacement sensor on the same side and the displacement sensor on different sides obtain the vertical height and chord length information of the friction plate respectively, and send it to the computer through the data acquisition card, and the video image is obtained by the CCD camera, processed by the image collector, and the arc length information of the friction plate is obtained and sent to the computer. into the computer, using the ratio between the actual measured value of the chord length and the pixel occupied by the image display chord length, to obtain the actual arc length value corresponding to the pixel occupied by the arc length of the friction plate in the image, and the obtained diameter and arc length of the friction plate , The vertical height information is compared with the standard diameter, arc length, and vertical height information, and a real-time alarm is generated.

Figure 201320177858

Description

一种汽车鼓式制动器摩擦片检测系统An automobile drum brake friction plate detection system

技术领域technical field

本实用新型提供一种汽车鼓式制动器摩擦片检测系统,属于自动控制检测领域。The utility model provides an automobile drum brake friction plate detection system, which belongs to the field of automatic control detection.

背景技术Background technique

制动器是汽车上的安全部件,汽车鼓式制动器摩擦片的直径和垂直高度是两个重要的指标,现有的技术只是在设计制动器摩擦片时,提出较好的解决方法,但是对后续的鼓式制动器摩擦片进行检测时,却没有一种合适有效的方法,传统方法利用人工测量检测,但是效果不是很好,在此提出一种汽车鼓式制动器摩擦片的检测系统,可以有效的对汽车鼓式制动器摩擦片的直径及垂直高度进行检测,同时能够计算出汽车鼓式制动器摩擦片的弧长,具有很好的实用性。The brake is a safety component on the car. The diameter and vertical height of the friction pad of the automobile drum brake are two important indicators. However, there is no suitable and effective method for the detection of drum brake friction pads. The traditional method uses manual measurement and detection, but the effect is not very good. Here, a detection system for automobile drum brake friction pads is proposed, which can effectively detect automobile drum brake friction pads. The diameter and vertical height of the drum brake friction plate are detected, and the arc length of the automobile drum brake friction plate can be calculated at the same time, which has good practicability.

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鼓式制动器摩擦片检测系统,能够实时的对汽车鼓式制动器摩擦片进行检测,准确的测量出摩擦片的直径、垂直度以及弧长信息,具有很强的实用性。In view of the above, the main purpose of this utility model is to provide an automobile drum brake friction lining detection system, which can detect the automobile drum brake friction lining in real time, and accurately measure the diameter, verticality and arc length information of the friction lining. Has a strong practicality.

为了达到上述目的,本实用新型发明采取的技术方案是:该系统由CCD摄像头、图像采集器、计算机、数据采集卡、四个位移传感器组成,其中CCD摄像头与图像采集器相连,四个位移传感器与数据采集卡相连,图像采集器、数据采集卡分别与计算机相连。CCD摄像头垂直放置于汽车鼓式制动器摩擦片生产线中间正方上位置,保持汽车鼓式制动器摩擦片的弦高与生产线平行,在与汽车鼓式制动器摩擦片弦长保持垂直的生产线两侧分别放置位两个位移传感器,并保持同侧两个位移传位移传感器与另一侧两个位移传感器恰好与标准汽车鼓式制动器摩擦片的垂直高度持平。结合图像采集器和数据采集卡利用计算机将实际测量的汽车鼓式制动器摩擦片的弧长、直径和垂直高度信息与标准汽车鼓式制动器摩擦片的弧长、直径、垂直高度信息进行比较,如果在允许误差范围之内,则不产生警报,如果超出误差范围,则进行报警。In order to achieve the above object, the technical solution adopted by the utility model is: the system is composed of a CCD camera, an image acquisition device, a computer, a data acquisition card, and four displacement sensors, wherein the CCD camera is connected with the image acquisition device, and the four displacement sensors It is connected with the data acquisition card, and the image collector and the data acquisition card are respectively connected with the computer. The CCD camera is vertically placed on the middle square of the production line of the automobile drum brake friction plate, keeping the chord height of the automobile drum brake friction plate parallel to the production line, and respectively placed on both sides of the production line perpendicular to the chord length of the automobile drum brake friction plate Two displacement sensors, and keep the two displacement sensors on the same side and the two displacement sensors on the other side just equal to the vertical height of the standard automobile drum brake friction plate. Combining the image collector and data acquisition card with the computer to compare the actual measured arc length, diameter and vertical height information of the automobile drum brake friction plate with the arc length, diameter and vertical height information of the standard automobile drum brake friction plate, if Within the allowable error range, no alarm will be generated, and if it exceeds the error range, an alarm will be issued.

本实用新型通过图像采集器和数据采集卡对汽车鼓式摩擦片进行数据采集,通过计算机对采集的汽车鼓式制动器摩擦片的弧长、垂直高度、直径进行计算,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 data on the automobile drum brake friction plate through an image collector and a data acquisition card, calculates the arc length, vertical height and diameter of the collected automobile drum brake friction plate through a computer, and compares it with the standard data. Accurate measurement values are obtained within the allowable range of error, and the practicability is strong.

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CCD摄像头(1)、图像采集器(2)、计算机(3)、数据采集卡(4)、位移传感器(5)、位移传感器(6)、位移传感器(7)、位移传感器(8)组成。Fig. 1 is the system schematic diagram of the utility model. The system consists of CCD camera (1), image acquisition device (2), computer (3), data acquisition card (4), displacement sensor (5), displacement sensor (6), displacement sensor (7), displacement sensor (8 )composition.

图2是本实用新型的弦长获取流程图。主要由位移传感器(5)、位移传感器(6)、位移传感器(7)、位移传感器(8)、计算汽车鼓式制动器摩擦片上侧弦长(9)、计算汽车鼓式制动器摩擦片下侧弦长(10)、数据采集卡(4)、两弦长比较并计算平均值(11)、平均值作为汽车鼓式制动器摩擦片弦长(12)组成。Fig. 2 is a flow chart of obtaining the chord length of the utility model. It is mainly composed of displacement sensor (5), displacement sensor (6), displacement sensor (7), displacement sensor (8), calculating the upper side chord length of the automobile drum brake friction plate (9), and calculating the lower side chord length of the automobile drum brake friction plate length (10), data acquisition card (4), two chord lengths are compared and calculate the average value (11), and the average value is formed as the chord length (12) of the automobile drum brake friction plate.

图3是本实用新型的工作流程图。主要由CCD摄像头(1)、图像采集器(2)、数据采集卡(4)、位移传感器(5)、位移传感器(6)、位移传感器(7)、位移传感器(8)、获取汽车鼓式制动器摩擦片一侧垂直高度(13)、获取汽车鼓式制动器摩擦片另一侧垂直高度(14)、两侧平均值比较并进行平均值计算(15)、将平均值作为汽车鼓式制动器摩擦片的垂直高度(16)、获取汽车鼓式制动器摩擦片的弧长形状特征(17)、计算汽车鼓式制动器摩擦片弦长所占像素(18)、汽车鼓式制动器摩擦片弦长测量值(19)、计算两者对应比例(20)、计算出汽车鼓式摩擦片的弧长、直径(21)、计算机输出结果(22)、报警(23)组成。Fig. 3 is a work flow diagram of the utility model. It is mainly composed of CCD camera (1), image collector (2), data acquisition card (4), displacement sensor (5), displacement sensor (6), displacement sensor (7), displacement sensor (8), and obtains the car drum type The vertical height of one side of the brake friction plate (13), obtain the vertical height of the other side of the automobile drum brake friction plate (14), compare the average value of both sides and calculate the average value (15), and use the average value as the friction value of the automobile drum brake The vertical height of the disc (16), obtaining the arc length and shape characteristics of the friction disc of the automobile drum brake (17), calculating the pixels occupied by the chord length of the friction disc of the drum brake of the automobile (18), and the measured value of the chord length of the friction disc of the drum brake of the automobile (19), calculate the two corresponding ratios (20), calculate the arc length of the automobile drum friction plate, the diameter (21), the computer output result (22), and report to the police (23) to form.

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.

图2是本实用新型中弦长获取流程图,位移传感器一般采用红外激光位移传感器,如图2所示,其具体步骤如下:Fig. 2 is the acquisition flow chart of chord length in the utility model, and displacement sensor generally adopts infrared laser displacement sensor, as shown in Fig. 2, its specific steps are as follows:

步骤1利用位移传感器(5)、位移传感器(7)计算汽车鼓式制动器摩擦片上侧弦长(9);Step 1 utilizes the displacement sensor (5) and the displacement sensor (7) to calculate the chord length (9) on the upper side of the friction plate of the automobile drum brake;

步骤2利用位移传感器(6)、位移传感器(8)计算汽车鼓式制动器摩擦片下侧弦长(10);Step 2 utilizes the displacement sensor (6) and the displacement sensor (8) to calculate the chord length (10) of the lower side of the friction plate of the automobile drum brake;

步骤3将上述两个步骤获取的弦长信息送至数据采集卡(4)进行处理,两弦长进行比较并计算平均值(11),如果两弦长相差比较大,则认为检测的汽车鼓式制动器摩擦片有缺陷,如果两弦长信息相差不大,则计算平均值,将平均值作为汽车鼓式制动器摩擦片弦长(12);Step 3 sends the chord length information obtained in the above two steps to the data acquisition card (4) for processing, and compares the two chord lengths and calculates the average value (11). If the difference between the two chord lengths is relatively large, it is considered that the detected car drum If the disc brake friction plate is defective, if the information on the two chord lengths has little difference, calculate the average value and use the average value as the chord length of the drum brake friction plate (12);

图3是本实用新型的系统工作流程图,如图3所示,其具体步骤如下:Fig. 3 is a system work flowchart of the present utility model, as shown in Fig. 3, its concrete steps are as follows:

步骤1利用位移传感器(5)、位移传感器(6)计算汽车鼓式制动器摩擦片一侧的垂直高度(13),利用位移传感器(7)、位移传感器(8)计算汽车鼓式制动器摩擦片另一侧的垂直高度(14),将两次获取的垂直高度信息送至数据采集卡(4),对两侧垂直高度进行比较并进行平均值计算(15),如果两侧垂直高度相差比较大,则认为检测的汽车鼓式制动器摩擦片有缺陷,如果误差偏小,则将平均值作为汽车鼓式制动器摩擦片的垂直高度(16);Step 1 Use the displacement sensor (5) and the displacement sensor (6) to calculate the vertical height (13) of one side of the friction plate of the automobile drum brake, and use the displacement sensor (7) and the displacement sensor (8) to calculate the vertical height (13) of the friction plate of the automobile drum brake on the other side For the vertical height on one side (14), send the vertical height information obtained twice to the data acquisition card (4), compare the vertical heights on both sides and calculate the average value (15), if the vertical height difference between the two sides is relatively large , then it is considered that the automobile drum brake friction lining detected is defective, if the error is too small, then the average value is used as the vertical height (16) of the automobile drum brake friction disk;

步骤2将CCD摄像头(1)采集的视频图像送至图像采集器(2)进行实时处理,利用图像二值化、数学形态学计算等,获取汽车鼓式制动器摩擦片弧长形状特征(17),并计算汽车鼓式制动器摩擦片弦长所占像素(18),利用图2流程图可得实际的汽车鼓式制动器摩擦片弦长测量值(19),将汽车鼓式制动器摩擦片弦长所占像素与汽车鼓式制动器摩擦片弦长测量值进行比较,计算两者的对应比例(20),对获取汽车鼓式制动器摩擦片弧长形状特征(17)进行所占像素数进行计算,利用对应比例和弧长所占像素数,可以获得实际的弧长和半径,即计算出汽车鼓式制动器摩擦片的弧长、直径(21)。Step 2 Send the video image collected by the CCD camera (1) to the image collector (2) for real-time processing, and use image binarization, mathematical morphology calculation, etc. to obtain the arc length shape feature of the friction plate of the automobile drum brake (17) , and calculate the pixels (18) occupied by the chord length of the automobile drum brake friction plate, the actual measurement value (19) of the chord length of the automobile drum brake friction plate can be obtained by using the flowchart in Figure 2, and the chord length of the automobile drum brake friction plate The occupied pixels are compared with the measured value of the chord length of the friction plate of the automobile drum brake, and the corresponding ratio (20) of the two is calculated, and the number of pixels occupied by the arc length shape feature (17) of the friction plate of the automobile drum brake is calculated, Using the corresponding ratio and the number of pixels occupied by the arc length, the actual arc length and radius can be obtained, that is, the arc length and diameter (21) of the automobile drum brake friction plate can be calculated.

步骤3将步骤1和步骤2运行结果通过计算机进行输出,即计算机输出结果(22),如果输出结果中汽车鼓式制动器摩擦片的弧长、直径和垂直高度信息与标准汽车鼓式制动器摩擦片的信息在允许的误差范围内,则认为该汽车鼓式制动器摩擦片合格,否则认为产品不合适,并进行报警(23)。Step 3 outputs the operation results of step 1 and step 2 through the computer, that is, the computer output result (22), if the arc length, diameter and vertical height information of the automobile drum brake friction plate in the output result are the same as the standard automobile drum brake friction plate If the information is within the allowable error range, then it is considered that the friction lining of the automobile drum brake is qualified, otherwise it is considered that the product is not suitable, and an alarm is issued (23).

Claims (2)

1.一种汽车鼓式制动器摩擦片检测系统,其结构特点是:该系统由CCD摄像头(1)、图像采集器(2)、计算机(3)、数据采集卡(4)、位移传感器(5)、位移传感器(6)、位移传感器(7)、位移传感器(8)组成,其中CCD摄像头(1)与图像采集器(2)相连,位移传感器(5)、位移传感器(6)、位移传感器(7)、位移传感器(8)与数据采集卡(4)相连,图像采集卡(2)、数据采集卡(4)分别与计算机(6)相连。1. A kind of automobile drum brake friction plate detection system, its structural feature is: this system is made of CCD camera (1), image acquisition device (2), computer (3), data acquisition card (4), displacement transducer (5 ), displacement sensor (6), displacement sensor (7), displacement sensor (8), wherein CCD camera (1) is connected with image acquisition device (2), displacement sensor (5), displacement sensor (6), displacement sensor (7), the displacement sensor (8) is connected with the data acquisition card (4), and the image acquisition card (2), the data acquisition card (4) is connected with the computer (6) respectively. 2.根据权利要求书1,所述的一种汽车鼓式制动器摩擦片检测系统,其特征是:CCD摄像头(1)垂直放置于汽车鼓式制动器摩擦片生产线中间正方上位置,保持汽车鼓式制动器摩擦片的弦高与生产线平行,在与汽车鼓式制动器摩擦片弦长保持垂直的生产线两侧分别放置位两个位移传感器,并保持同侧位移传位移传感器(5)、位移传感器(6)、与另一侧位移传感器(7)、位移传感器(8)恰好与标准汽车鼓式制动器摩擦片的垂直高度持平,结合图像采集器(2)和数据采集卡(4)利用计算机(3)将实际测量的汽车鼓式制动器摩擦片的弧长、直径和垂直高度信息与标准汽车鼓式制动器摩擦片的弧长、直径、垂直高度信息进行比较,如果在允许误差范围之内,则不产生警报,如果超出误差范围,则进行报警。2. According to claim 1, the described a kind of automobile drum brake friction lining detection system is characterized in that: the CCD camera (1) is placed vertically on the position in the middle of the automobile drum brake friction lining production line, keeping the automobile drum brake The chord height of the brake friction plate is parallel to the production line, and two displacement sensors are respectively placed on both sides of the production line perpendicular to the chord length of the automobile drum brake friction plate, and the displacement sensor (5) and the displacement sensor (6) are kept on the same side. ), the displacement sensor (7) on the other side, and the displacement sensor (8) are just on par with the vertical height of the standard automobile drum brake friction plate, and the computer (3) is utilized in conjunction with the image acquisition device (2) and the data acquisition card (4) Compare the arc length, diameter and vertical height information of the actual measured automobile drum brake friction plate with the arc length, diameter and vertical height information of the standard automobile drum brake friction plate. If it is within the allowable error range, no Alarm, if the error range is exceeded, an alarm will be issued.
CN 201320177858 2013-04-02 2013-04-02 Automobile drum brake friction plate detection system Expired - Fee Related CN203163699U (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103940344A (en) * 2014-04-11 2014-07-23 西安敏文电子科技有限公司 High-precision remote displacement sensor
CN105043319A (en) * 2015-07-07 2015-11-11 成都亨通兆业精密机械有限公司 Workpiece dimension automatic detection device
CN107966232A (en) * 2017-11-24 2018-04-27 中国特种设备检测研究院 Hoisting equipment brake performance monitoring method and system based on machine vision
CN110192080A (en) * 2017-01-12 2019-08-30 克诺尔轨道车辆系统有限公司 For determining the application of the optical lasers triangulation method of the non-contact operation of the geometrical property of brake lining
CN111023985A (en) * 2019-12-31 2020-04-17 芜湖哈特机器人产业技术研究院有限公司 Clutch friction plate measuring device and data processing method thereof

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103940344A (en) * 2014-04-11 2014-07-23 西安敏文电子科技有限公司 High-precision remote displacement sensor
CN103940344B (en) * 2014-04-11 2017-08-11 西安敏文电子科技有限公司 A kind of High Precision Long-distance displacement transducer
CN105043319A (en) * 2015-07-07 2015-11-11 成都亨通兆业精密机械有限公司 Workpiece dimension automatic detection device
CN110192080A (en) * 2017-01-12 2019-08-30 克诺尔轨道车辆系统有限公司 For determining the application of the optical lasers triangulation method of the non-contact operation of the geometrical property of brake lining
US11099006B2 (en) 2017-01-12 2021-08-24 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Use of a contactlessly working optical laser triangulation method for determining geometric properties of a brake lining
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CN107966232A (en) * 2017-11-24 2018-04-27 中国特种设备检测研究院 Hoisting equipment brake performance monitoring method and system based on machine vision
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