CN106248723A - Measure instrument and the method for bitumen mixture specimen change in volume when sensing is heated - Google Patents
Measure instrument and the method for bitumen mixture specimen change in volume when sensing is heated Download PDFInfo
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- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
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- G—PHYSICS
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Abstract
本发明属于沥青性能测试技术领域，具体来说，涉及到一种测量感应加热时沥青混合料试件体积变化的仪器及方法。所述仪器包括电磁发射装置、可伸缩导电连接杆、温度传感器A、温度传感器B、温度传感器C、温度传感器D、温度传感器E、摄像头定位装置、摄像头、刻度、试件11、贴片、固定杆、接口、屏幕、控制键盘、交流发电机、图像分析装置、风热控温装置、连接杆控制装置、图像采集装置控制系统、控制箱、控制器、环境箱和可伸缩杆。与现有技术相比，本发明结构简单、操作简便、使用效果好，能简便、快速测定感应加热过程沥青混合料试件体积变化情况，并且感应加热过程易于控制。
The invention belongs to the technical field of asphalt performance testing, and in particular relates to an instrument and a method for measuring the volume change of an asphalt mixture specimen during induction heating. The instrument includes an electromagnetic emission device, a retractable conductive connecting rod, a temperature sensor A, a temperature sensor B, a temperature sensor C, a temperature sensor D, a temperature sensor E, a camera positioning device, a camera, a scale, a test piece 11, a patch, a fixed Rod, interface, screen, control keyboard, alternator, image analysis device, wind heat temperature control device, connecting rod control device, image acquisition device control system, control box, controller, environmental box and retractable rod. Compared with the prior art, the invention has the advantages of simple structure, convenient operation and good application effect, and can simply and quickly measure the volume change of the asphalt mixture specimen during the induction heating process, and the induction heating process is easy to control.
Description
技术领域technical field
本发明属于沥青性能测试技术领域，具体来说，涉及到一种测量感应加热时沥青混合料试件体积变化的仪器及方法。The invention belongs to the technical field of asphalt performance testing, and in particular relates to an instrument and a method for measuring the volume change of an asphalt mixture specimen during induction heating.
背景技术Background technique
沥青混凝土路面在常温下可以自愈合，但速度非常缓慢，且要求没有行车荷载的循环作用。当沥青混合料中的黏结剂在间歇期受到高温时，沥青的愈合率会提高，沥青愈合会修复沥青混凝土路面由低温、疲劳和基层反射所导致的裂缝松散等病害，因此会提高沥青混凝土路面的服务寿命，减少路面的养护和修复，带来经济和交通等方面的益处。沥青混凝土路面自愈合技术与密封剂等修复措施相比，不会给修复路面带来负面影响，如抗滑性能等。因此国内外学者广泛开展了沥青路面感应加热自愈合技术研究。Asphalt concrete pavements can self-heal at room temperature, but at a very slow rate and require no cycling of traffic loads. When the binder in the asphalt mixture is exposed to high temperature during the intermittent period, the healing rate of the asphalt will increase, and asphalt healing will repair the asphalt concrete pavement due to low temperature, fatigue and base reflection. service life, reduce pavement maintenance and repair, and bring economic and traffic benefits. Compared with repair measures such as sealants, asphalt concrete pavement self-healing technology will not bring negative effects on the repaired pavement, such as anti-skid performance. Therefore, scholars at home and abroad have extensively carried out the research on induction heating self-healing technology of asphalt pavement.
沥青路面感应加热自愈合技术是通过掺加导电纤维的沥青混凝土在电磁发射装置产生的的磁场里做切割磁感线的运动时，掺加导电纤维的沥青混凝土中就会产生电流，从而升温，愈合已有的损伤。但是感应加热是否会使得沥青路面的体积发生较大变化，而引起鼓包等病害的发生是我们关心的关键问题之一。但是，目前仍然没有很好的一体化的室内试验设备用于测量感应加热过程沥青混合料试件体积变化情况的仪器及方法。Asphalt pavement induction heating self-healing technology is that when the asphalt concrete mixed with conductive fibers cuts the magnetic field line in the magnetic field generated by the electromagnetic emission device, a current will be generated in the asphalt concrete mixed with conductive fibers, thereby heating up , to heal existing damage. However, whether induction heating will cause a large change in the volume of the asphalt pavement and cause bulges and other diseases is one of the key issues we are concerned about. However, there is still no well-integrated indoor test equipment for measuring the volume change of asphalt mixture specimens and methods during induction heating.
发明内容Contents of the invention
为解决上述技术问题，本发明提供了一种结构简单、操作简便、使用效果好的测量感应加热时沥青混合料试件体积变化的仪器及方法。In order to solve the above technical problems, the present invention provides an instrument and method for measuring the volume change of asphalt mixture specimens during induction heating with simple structure, easy operation and good use effect.
本发明所述的一种测量感应加热时沥青混合料试件体积变化的仪器，所述仪器包括分为左侧和右侧，左侧为环境箱24，右侧顶部为控制箱22；控制箱22下方为交流发电机17；交流发电机17的左下方往下依次为风热控温装置19和连接杆控制装置20，右下方往下依次为图像分析装置18和图像采集装置控制系统21；环境箱24内在顶部设有电磁发射装置1，两侧壁各刻有刻度10，中央放有试件11，试件11上下侧设有摄像头定位装置8；电磁发射装置1的两端通过两根可伸缩导电连接杆2与环境箱24的两侧壁水平连接，其还与交流发电机17连接；电磁发射装置1在两根可伸缩导电连接杆2的引导下，做水平运动；可伸缩导电连接杆2与连接杆控制装置20连接；摄像头定位装置8有两个，其横截面为圆弧状，且突起侧通过可伸缩杆25与环境箱24的顶面或底面连接；摄像头定位装置8内凹侧安装有四个将圆弧面等分的摄像头9；摄像头9的方向180°可调；调节可伸缩杆25的长度能调节摄像头定位装置8与摄像头9的高度；摄像头定位装置8、摄像头9及可伸缩杆25与图像采集控制系统21连接；固定杆13有两个，分别位于试件11两侧，能将试件11固定在环境箱24的中间；每根固定杆13的一端通过贴片12与试件11连接，另一端与环境箱24侧壁的接口14连接；两排刻度10的上下两端共设有四个温度传感器，分别为温度传感器B4、温度传感器C5、温度传感器D6和温度传感器E7；温度传感器A3设在试件表面位置；五个温度传感器与风热控温装置19连接；控制箱22包括箱体、箱体内的电子线路板以及箱体外侧壁上的屏幕15和控制键盘16；电子线路板上安装有控制器23；五个温度传感器、屏幕15、控制键盘16、交流发电机17、图像分析装置18、连接杆控制装置20和图像采集装置控制系统21与控制器23连接。An instrument for measuring the volume change of asphalt mixture specimens during induction heating according to the present invention, said instrument includes a left side and a right side, the left side is an environmental box 24, and the top right side is a control box 22; the control box Below 22 is the alternator 17; from the lower left of the alternator 17 are the air-heat temperature control device 19 and the connecting rod control device 20, and from the lower right are the image analysis device 18 and the image acquisition device control system 21; The environmental box 24 is provided with an electromagnetic emission device 1 at the top, each side wall is engraved with a scale 10, and a test piece 11 is placed in the center, and the upper and lower sides of the test piece 11 are provided with a camera positioning device 8; the two ends of the electromagnetic emission device 1 pass two The retractable conductive connecting rod 2 is horizontally connected to the two side walls of the environmental box 24, which is also connected to the alternator 17; the electromagnetic emission device 1 moves horizontally under the guidance of the two retractable conductive connecting rods 2; The connecting rod 2 is connected with the connecting rod control device 20; there are two camera positioning devices 8, the cross section of which is arc-shaped, and the protruding side is connected with the top or bottom surface of the environmental box 24 through a telescopic rod 25; the camera positioning device 8 The inner concave side is equipped with four cameras 9 that divide the arc surface into equal parts; the direction of the camera 9 is adjustable by 180 °; the length of the adjustable telescopic rod 25 can regulate the height of the camera positioning device 8 and the camera 9; the camera positioning device 8, The camera 9 and the telescopic rod 25 are connected with the image acquisition control system 21; there are two fixed rods 13, which are respectively located on both sides of the test piece 11, and can fix the test piece 11 in the middle of the environmental chamber 24; one end of each fixed rod 13 The test piece 11 is connected through the patch 12, and the other end is connected with the interface 14 on the side wall of the environmental box 24; four temperature sensors are arranged at the upper and lower ends of the two rows of scales 10, which are respectively temperature sensor B4, temperature sensor C5, temperature Sensor D6 and temperature sensor E7; temperature sensor A3 is located at the surface position of the test piece; five temperature sensors are connected with air-heat temperature control device 19; Screen 15 and control keyboard 16; controller 23 is installed on the electronic circuit board; five temperature sensors, screen 15, control keyboard 16, alternator 17, image analysis device 18, connecting rod control device 20 and image acquisition device control system 21 is connected with controller 23.
本发明所述的测量感应加热时沥青混合料试件体积变化的方法，所述方法具体步骤为：The method for measuring the volume change of an asphalt mixture specimen during induction heating according to the present invention, the specific steps of the method are:
1)在沿着试件直径的两侧用环氧胶固定两个贴片12，在试件表面采用环氧胶固定温度传感器A3，试件11在常温下养生24h，使得环氧胶完成固化，两个贴片12和温度传感器A3牢固的黏结在试件表面；1) Fix the two patches 12 with epoxy glue on both sides along the diameter of the test piece, fix the temperature sensor A3 with epoxy glue on the surface of the test piece, and cure the test piece 11 at room temperature for 24 hours, so that the epoxy glue is completely cured , the two patches 12 and the temperature sensor A3 are firmly bonded to the surface of the test piece;
2)将试件11上的两个贴片12分别与两根固定杆13连接，将两根固定杆的另一端与两个接口14连接，从而将试件11固定在环境箱24中；2) Connect the two patches 12 on the test piece 11 to the two fixing rods 13 respectively, and connect the other ends of the two fixing rods to the two interfaces 14, thereby fixing the test piece 11 in the environmental chamber 24;
3)通过图像采集控制系统21调节两根可伸缩杆25的长度、调节八个摄像头9的方向，保证八个摄像头9能够全面的采集试件11全方位的图像；3) Adjust the lengths of the two telescopic rods 25 and the directions of the eight cameras 9 through the image acquisition control system 21, so as to ensure that the eight cameras 9 can comprehensively collect all-round images of the test piece 11;
4)设定环境箱温度，环境箱的温度采用沥青混合料感应加热修复工程的现场大气温度，将固定好的试件11在环境箱中保温5h；4) Set the temperature of the environmental box, the temperature of the environmental box adopts the on-site atmospheric temperature of the asphalt mixture induction heating repair project, and keep the fixed test piece 11 in the environmental box for 5 hours;
5)通过图像分析装置18，并借助环境箱24两侧的刻度10与环境箱的结构图，将八个摄像头9采集的八张视图做立体拼接；借助图像分析装置18计算试件11的体积；5) Through the image analysis device 18, and with the help of the scale 10 on both sides of the environmental box 24 and the structural diagram of the environmental box, the eight views collected by the eight cameras 9 are stereoscopically spliced; the volume of the test piece 11 is calculated by the image analysis device 18 ;
6)感应加热前试件体积计算完毕后，开启交流发电机17，在电磁发射装置1产生固定强度的电磁波信号，并通过两根可伸缩导电连接杆(2)和连接杆控制装置20，让电磁发射装置1做水平向的匀速运动；这相当于试件11在磁场中做切割磁感线运动，这时如果试件11中掺加有导电介质，试件11内部就会产生电流，从而升温，加速修复已有的损伤；6) After the calculation of the volume of the test piece before induction heating is completed, the alternator 17 is turned on to generate an electromagnetic wave signal of fixed intensity at the electromagnetic emission device 1, and through two retractable conductive connecting rods (2) and the connecting rod control device 20, the The electromagnetic emission device 1 moves at a constant speed in the horizontal direction; this is equivalent to the movement of the test piece 11 cutting the magnetic field lines in the magnetic field. At this time, if the test piece 11 is mixed with a conductive medium, a current will be generated inside the test piece 11, thereby Raise the temperature to speed up the repair of existing damage;
7)随着试件表面的升温,根据温度传感器A3传输的温度情况，控制器实时采集感应加热时间、试件表面温度；图像采集控制系统21实时采集试件11图像，并通过图像分析装置18，并借助环境箱24两侧的刻度10与环境箱的结构图，将八个摄像头9采集的八张视图做立体拼接；借助图像分析装置18实时计算试件11的体积；最后得到感应加热时间、试件表面温度、试件体积于一体的试验数据；试验过程中，当试件表面温度大于沥青软化点温度时，设备自动会通过交流发电机17、温度传感器A3与控制器23的协同工作将试件表面的温度恒定在沥青软化点温度。7) With the temperature rise of the surface of the test piece, according to the temperature condition transmitted by the temperature sensor A3, the controller collects the induction heating time and the surface temperature of the test piece in real time; , and with the help of the scale 10 on both sides of the environmental box 24 and the structural diagram of the environmental box, the eight views collected by the eight cameras 9 are stereoscopically spliced; the volume of the test piece 11 is calculated in real time by means of the image analysis device 18; finally the induction heating time is obtained , test piece surface temperature, and test piece volume in one test data; during the test, when the test piece surface temperature is higher than the asphalt softening point temperature, the equipment will automatically work together through the alternator 17, the temperature sensor A3 and the controller 23 The temperature of the surface of the specimen was kept constant at the softening point of asphalt.
与现有技术相比，本发明所述的测量感应加热时沥青混合料试件体积变化的仪器及方法具有以下优点：Compared with the prior art, the instrument and method for measuring the volume change of asphalt mixture specimen during induction heating of the present invention have the following advantages:
1)仪器结构简单、设计合理且安装及使用操作简便，投入成本较低，安装紧凑，占用空间较小；1) The instrument has simple structure, reasonable design, easy installation and operation, low input cost, compact installation and small footprint;
2)仪器参数调整简便，能对环境箱温度、感应加热速度、试件表面感应加热温度、数据采集频率等参数进行调整，并且设置有控制箱，控制简易，能精确控制环境箱温度、感应加热速度、试件表面感应加热温度，精确地模拟了一定现场使用条件下的沥青路面不同感应加热修复过程中沥青路面体积变化规律；2) The instrument parameters are easy to adjust, and can adjust the temperature of the environmental chamber, induction heating speed, surface induction heating temperature of the test piece, data acquisition frequency and other parameters, and is equipped with a control box, which is easy to control and can accurately control the temperature of the environmental chamber and induction heating The speed and surface induction heating temperature of the test piece accurately simulate the volume change of the asphalt pavement in the process of different induction heating repairs of the asphalt pavement under certain field use conditions;
3)仪器设置有环境箱、风热控温装置、温度传感器B、温度传感器C、温度传感器D、温度传感器E，形成了特定路面的大气环境条件，模拟了沥青路面感应修复工程的大气环境；3) The instrument is equipped with an environmental box, a wind-heat temperature control device, a temperature sensor B, a temperature sensor C, a temperature sensor D, and a temperature sensor E, forming the atmospheric environment conditions of a specific road surface and simulating the atmospheric environment of the asphalt pavement induction repair project;
4)仪器在试件表面设置有温度传感器A，并将温度传感器A与控制器连接，试验过程中能够精确地采集试件表面温度，并控制感应加热一段时间后试件表面的温度恒定在沥青软化点温度；4) The instrument is equipped with a temperature sensor A on the surface of the test piece, and the temperature sensor A is connected to the controller. During the test, the surface temperature of the test piece can be accurately collected, and the surface temperature of the test piece is controlled to be constant after induction heating for a period of time. softening point temperature;
5)仪器设置有摄像头定位装置、摄像头、刻度、图像采集装置控制系统、图像分析装置，它们在控制器的连接下协同工作，实现了沥青混合料试件体积变化情况的精确测量与计算；5) The instrument is equipped with a camera positioning device, a camera, a scale, an image acquisition device control system, and an image analysis device. They work together under the connection of the controller to realize the accurate measurement and calculation of the volume change of the asphalt mixture specimen;
6)使用效果好且实用价值高，外形美观且环保，极大程度上方便了感应加热前后沥青混合料试件体积变化情况的测量，并且模拟感应加热过程易于控制，具有一体化操作方便等优点。6) Good use effect and high practical value, beautiful appearance and environmental protection, which greatly facilitates the measurement of the volume change of asphalt mixture specimens before and after induction heating, and the simulated induction heating process is easy to control, and has the advantages of convenient integrated operation, etc. .
附图说明Description of drawings
图1：本发明所述仪器示意图；图2：电磁发射装置示意图；图3：控制器电路原理示意图；1-电磁发射装置；2-可伸缩导电连接杆；3-温度传感器A；4-温度传感器B；5-温度传感器C；6-温度传感器D；7-温度传感器E；8-摄像头定位装置；9-摄像头；10-刻度；11-试件；12-贴片；13-固定杆；14-接口；15-屏幕；16-控制键盘；17-交流发电机；18-图像分析装置；19-风热控温装置；20-连接杆控制装置；21-图像采集装置控制系统；22-控制箱；23-控制器；24-环境箱；25-可伸缩杆。Fig. 1: schematic diagram of the instrument of the present invention; Fig. 2: schematic diagram of electromagnetic emission device; Fig. 3: schematic diagram of controller circuit principle; 1-electromagnetic emission device; 2-scalable conductive connecting rod; 3-temperature sensor A; 4-temperature Sensor B; 5-temperature sensor C; 6-temperature sensor D; 7-temperature sensor E; 8-camera positioning device; 9-camera; 10-scale; 11-test piece; 12-patch; 13-fixing rod; 14-interface; 15-screen; 16-control keyboard; 17-alternator; 18-image analysis device; 19-wind heat temperature control device; 20-connecting rod control device; 21-image acquisition device control system; 22- Control box; 23-controller; 24-environmental box; 25-extensible rod.
具体实施方式detailed description
下面结合具体的实施例对本发明所述的测量感应加热时沥青混合料试件体积变化的仪器及方法做进一步说明，但是本发明的保护范围并不限于此。The instrument and method for measuring the volume change of asphalt mixture specimens during induction heating according to the present invention will be further described below in conjunction with specific examples, but the protection scope of the present invention is not limited thereto.
实施例1Example 1
一种测量感应加热时沥青混合料试件体积变化的仪器，所述仪器包括分为左侧和右侧，左侧为环境箱24，右侧顶部为控制箱22；控制箱22下方为交流发电机17；交流发电机17的左下方往下依次为风热控温装置19和连接杆控制装置20，右下方往下依次为图像分析装置18和图像采集装置控制系统21；环境箱24内在顶部设有电磁发射装置1，两侧壁各刻有刻度10，中央放有试件11，试件11上下侧设有摄像头定位装置8；电磁发射装置1的两端通过两根可伸缩导电连接杆2与环境箱24的两侧壁水平连接，其还与交流发电机17连接；电磁发射装置1在两根可伸缩导电连接杆2的引导下，做水平运动；可伸缩导电连接杆2与连接杆控制装置20连接；摄像头定位装置8有两个，其横截面为圆弧状，且突起侧通过可伸缩杆25与环境箱24的顶面或底面连接；摄像头定位装置8内凹侧安装有四个将圆弧面等分的摄像头9；摄像头9的方向180°可调；调节可伸缩杆25的长度能调节摄像头定位装置8与摄像头9的高度；摄像头定位装置8、摄像头9及可伸缩杆25与图像采集控制系统21连接；固定杆13有两个，分别位于试件11两侧，能将试件11固定在环境箱24的中间；每根固定杆13的一端通过贴片12与试件11连接，另一端与环境箱24侧壁的接口14连接；两排刻度10的上下两端共设有四个温度传感器，分别为温度传感器B4、温度传感器C5、温度传感器D6和温度传感器E7；温度传感器A3设在试件表面位置；五个温度传感器与风热控温装置19连接；控制箱22包括箱体、箱体内的电子线路板以及箱体外侧壁上的屏幕15和控制键盘16；电子线路板上安装有控制器23；五个温度传感器、屏幕15、控制键盘16、交流发电机17、图像分析装置18、连接杆控制装置20和图像采集装置控制系统21与控制器23连接。An instrument for measuring the volume change of asphalt mixture specimens during induction heating. The instrument is divided into a left side and a right side. The left side is an environmental box 24, and the top right side is a control box 22; the bottom of the control box 22 is an AC power generator. machine 17; from the bottom left of the alternator 17, there are wind-heat temperature control device 19 and connecting rod control device 20, and from the bottom right, there are image analysis device 18 and image acquisition device control system 21; the environment box 24 is inside the top An electromagnetic emission device 1 is provided, with scales 10 engraved on both side walls, a test piece 11 is placed in the center, and a camera positioning device 8 is provided on the upper and lower sides of the test piece 11; two ends of the electromagnetic emission device 1 pass through two telescopic conductive connecting rods 2 is horizontally connected with the two side walls of the environmental box 24, and it is also connected with the alternator 17; the electromagnetic emission device 1 moves horizontally under the guidance of two telescopic conductive connecting rods 2; the telescopic conductive connecting rod 2 is connected with The rod control device 20 is connected; the camera positioning device 8 has two, and its cross section is arc-shaped, and the protruding side is connected with the top surface or the bottom surface of the environment box 24 by a telescopic rod 25; the concave side of the camera positioning device 8 is installed with Four cameras 9 that divide the arc surface into equal parts; the direction of the camera 9 is adjustable by 180°; the length of the adjustable telescopic rod 25 can regulate the height of the camera positioning device 8 and the camera 9; the camera positioning device 8, the camera 9 and the retractable The rod 25 is connected with the image acquisition control system 21; there are two fixed rods 13, which are respectively located on both sides of the test piece 11, and can fix the test piece 11 in the middle of the environmental chamber 24; one end of each fixed rod 13 is connected with the patch 12 The test piece 11 is connected, and the other end is connected to the interface 14 on the side wall of the environmental chamber 24; there are four temperature sensors at the upper and lower ends of the two rows of scales 10, which are respectively temperature sensor B4, temperature sensor C5, temperature sensor D6 and temperature sensor E7; the temperature sensor A3 is located on the surface of the test piece; five temperature sensors are connected with the air-heat temperature control device 19; the control box 22 includes a box body, an electronic circuit board in the box body, and a screen 15 and a control keyboard on the outer wall of the box body 16; controller 23 is installed on the electronic circuit board; five temperature sensors, screen 15, control keyboard 16, alternator 17, image analysis device 18, connecting rod control device 20 and image acquisition device control system 21 and controller 23 connect.
本发明所述的测量感应加热时沥青混合料试件体积变化的方法，所述方法具体步骤为：The method for measuring the volume change of an asphalt mixture specimen during induction heating according to the present invention, the specific steps of the method are:
1)在沿着试件直径的两侧用环氧胶固定两个贴片12，在试件表面采用环氧胶固定温度传感器A3，试件11在常温下养生24h，使得环氧胶完成固化，两个贴片12和温度传感器A3牢固的黏结在试件表面；1) Fix the two patches 12 with epoxy glue on both sides along the diameter of the test piece, fix the temperature sensor A3 with epoxy glue on the surface of the test piece, and cure the test piece 11 at room temperature for 24 hours, so that the epoxy glue is completely cured , the two patches 12 and the temperature sensor A3 are firmly bonded to the surface of the test piece;
2)将试件11上的两个贴片12分别与两根固定杆13连接，将两根固定杆的另一端与两个接口14连接，从而将试件11固定在环境箱24中；2) Connect the two patches 12 on the test piece 11 to the two fixing rods 13 respectively, and connect the other ends of the two fixing rods to the two interfaces 14, thereby fixing the test piece 11 in the environmental chamber 24;
3)通过图像采集控制系统21调节两根可伸缩杆25的长度、调节八个摄像头9的方向，保证八个摄像头9能够全面的采集试件11全方位的图像；3) Adjust the lengths of the two telescopic rods 25 and the directions of the eight cameras 9 through the image acquisition control system 21, so as to ensure that the eight cameras 9 can comprehensively collect all-round images of the test piece 11;
4)设定环境箱温度，环境箱的温度采用沥青混合料感应加热修复工程的现场大气温度，将固定好的试件11在环境箱中保温5h；4) Set the temperature of the environmental box, the temperature of the environmental box adopts the on-site atmospheric temperature of the asphalt mixture induction heating repair project, and keep the fixed test piece 11 in the environmental box for 5 hours;
5)通过图像分析装置18，并借助环境箱24两侧的刻度10与环境箱的结构图，将八个摄像头9采集的八张视图做立体拼接；借助图像分析装置18计算试件11的体积；5) Through the image analysis device 18, and with the help of the scale 10 on both sides of the environmental box 24 and the structural diagram of the environmental box, the eight views collected by the eight cameras 9 are stereoscopically spliced; the volume of the test piece 11 is calculated by the image analysis device 18 ;
6)感应加热前试件体积计算完毕后，开启交流发电机17，在电磁发射装置1产生固定强度的电磁波信号，并通过两根可伸缩导电连接杆2和连接杆控制装置20，让电磁发射装置1做水平向的匀速运动；这相当于试件11在磁场中做切割磁感线运动，这时如果试件11中掺加有导电介质，试件11内部就会产生电流，从而升温，加速修复已有的损伤；6) After the volume calculation of the test piece before induction heating is completed, the alternator 17 is turned on to generate an electromagnetic wave signal of fixed intensity at the electromagnetic emission device 1, and through two retractable conductive connecting rods 2 and the connecting rod control device 20, the electromagnetic emission The device 1 moves at a constant speed in the horizontal direction; this is equivalent to the movement of the test piece 11 cutting the magnetic field lines in the magnetic field. At this time, if the test piece 11 is mixed with a conductive medium, a current will be generated inside the test piece 11, thereby increasing the temperature. Speed up the repair of existing damage;
7)随着试件表面的升温,根据温度传感器A3传输的温度情况，控制器实时采集感应加热时间、试件表面温度；图像采集控制系统21实时采集试件11图像，并通过图像分析装置18，并借助环境箱24两侧的刻度10与环境箱的结构图，将八个摄像头9采集的八张视图做立体拼接；借助图像分析装置18实时计算试件11的体积；最后得到感应加热时间、试件表面温度、试件体积于一体的试验数据；试验过程中，当试件表面温度大于沥青软化点温度时，设备自动会通过交流发电机17、温度传感器A3与控制器23的协同工作将试件表面的温度恒定在沥青软化点温度。7) With the temperature rise of the surface of the test piece, according to the temperature condition transmitted by the temperature sensor A3, the controller collects the induction heating time and the surface temperature of the test piece in real time; , and with the help of the scale 10 on both sides of the environmental box 24 and the structural diagram of the environmental box, the eight views collected by the eight cameras 9 are stereoscopically spliced; the volume of the test piece 11 is calculated in real time by means of the image analysis device 18; finally the induction heating time is obtained , test piece surface temperature, and test piece volume in one test data; during the test, when the test piece surface temperature is higher than the asphalt softening point temperature, the equipment will automatically work together through the alternator 17, the temperature sensor A3 and the controller 23 The temperature of the surface of the specimen was kept constant at the softening point of asphalt.
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