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CN206269744U - Portable electric eddy current sensor in-situ calibration device - Google Patents

Portable electric eddy current sensor in-situ calibration device Download PDF

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Publication number
CN206269744U
CN206269744U CN201621370695.3U CN201621370695U CN206269744U CN 206269744 U CN206269744 U CN 206269744U CN 201621370695 U CN201621370695 U CN 201621370695U CN 206269744 U CN206269744 U CN 206269744U
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China
Prior art keywords
micrometer
sensor
eddy current
chute
current sensor
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Expired - Fee Related
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CN201621370695.3U
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Chinese (zh)
Inventor
周瑞平
冯晓辉
雷俊松
廖鹏飞
陈昊
胡云飞
刘畅
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Wuhan University of Technology WUT
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Wuhan University of Technology WUT
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Abstract

本实用新型公开了一种便携式电涡流传感器现场标定装置,包括底座、传感器支架和千分尺,所述底座包括螺母座、滑槽和压盖;所述传感器支架包括滑块、传感器固定套,以及设置在滑块与传感器固定套之间的千分尺连接部,所述千分尺连接部的正面设置有千分尺连接孔;所述滑块可上下滑动地设置在所述滑槽内;所述压盖可拆卸地固定在滑槽的开口处,以限定所述滑块只能在滑槽内滑动;所述千分尺螺纹连接在螺母座上,所述千分尺的端部伸入所述千分尺连接孔内;所述千分尺连接部的背面设置有弹簧。该装置利用千分尺调节轴系表面与电涡流传感器间的相对位移信号,克服了传统标定作业工作环境恶劣、误差大的弊端,具有结构简单,维护性强,可靠性高等特点。

The utility model discloses a portable eddy current sensor on-site calibration device, comprising a base, a sensor bracket and a micrometer, the base includes a nut seat, a chute and a gland; the sensor bracket includes a slider, a sensor fixing sleeve, and a set In the micrometer connection part between the slider and the sensor fixing sleeve, a micrometer connection hole is provided on the front of the micrometer connection part; the slider can be slid up and down and arranged in the chute; It is fixed at the opening of the chute so that the slider can only slide in the chute; the micrometer is threaded on the nut seat, and the end of the micrometer extends into the connecting hole of the micrometer; the micrometer A spring is arranged on the back of the connection part. The device uses a micrometer to adjust the relative displacement signal between the surface of the shafting and the eddy current sensor, which overcomes the disadvantages of harsh working environment and large errors in traditional calibration operations, and has the characteristics of simple structure, strong maintainability and high reliability.

Description

便携式电涡流传感器现场标定装置Portable eddy current sensor field calibration device

技术领域technical field

本实用新型涉及一种电涡流传感器标定装置,特别是指一种便携式电涡流传感器现场标定装置。The utility model relates to a calibration device for an eddy current sensor, in particular to a portable field calibration device for an eddy current sensor.

背景技术Background technique

电涡流传感器是一种高线性度、高分辨力地测量被测金属导体距探头表面距离的位移非接触式传感器。此类传感器利用法拉第电磁感应原理,即金属导体置于变化的磁场中或在磁场中作切割磁力线运动时,导体内将产生呈涡旋状的感应电流,此电流叫电涡流,以上现象称为电涡流效应。The eddy current sensor is a displacement non-contact sensor that measures the distance between the measured metal conductor and the probe surface with high linearity and high resolution. This type of sensor uses the principle of Faraday's electromagnetic induction, that is, when a metal conductor is placed in a changing magnetic field or cuts the magnetic force line in the magnetic field, a vortex-shaped induced current will be generated in the conductor. This current is called eddy current, and the above phenomenon is called Eddy current effect.

电涡流传感器测量时,被测金属导体的材料、表面平整度、表面磁效应、表面镀层以及表面尺寸等因素对测量过程及结果有一定的影响,因此,电涡流传感器使用前必须要在现场环境中再次标定,绘制传感器的输出特性曲线u=f(d),确定传感器的线性工作范围及灵敏度,正确地选取初始间隙,以保证测量结果的准确性。When measuring eddy current sensors, factors such as the material of the metal conductor to be tested, surface flatness, surface magnetic effect, surface coating, and surface size have certain influence on the measurement process and results. Therefore, the eddy current sensor must be tested in the field environment before use. Calibrate again, draw the output characteristic curve u=f(d) of the sensor, determine the linear working range and sensitivity of the sensor, and correctly select the initial gap to ensure the accuracy of the measurement results.

目前,采用电涡流传感器对轴系振动进行测量时,现场标定一般采用“两点法”。在安装好传感器后,利用塞尺辅助测量传感器端头与轴系表面的间隙,分别在合适的间隙采集传感器数据绘制输出特性曲线u=f(d)。这种方法通常受轴系安装环境和人为操作水平的影响,操作不方便,对间隙的测量误差较大,导致电涡流传感器测量的准确性降低。At present, when the eddy current sensor is used to measure the shafting vibration, the on-site calibration generally adopts the "two-point method". After the sensor is installed, use a feeler gauge to assist in measuring the gap between the sensor end and the shafting surface, and collect sensor data at a suitable gap to draw the output characteristic curve u=f(d). This method is usually affected by the installation environment of the shafting and the level of human operation, the operation is inconvenient, and the measurement error of the gap is relatively large, resulting in a decrease in the accuracy of the eddy current sensor measurement.

发明内容Contents of the invention

本实用新型的目的在于提供一种能省时省力、精确地对电涡流传感器进行现场标定的便携式电涡流传感器现场标定装置。The purpose of the utility model is to provide a portable eddy current sensor on-site calibration device which can save time and labor and accurately perform on-site calibration of the eddy current sensor.

为实现上述目的,本实用新型所设计的便携式电涡流传感器现场标定装置,包括底座、传感器支架和千分尺,所述底座包括螺母座、滑槽和压盖;所述传感器支架包括滑块、传感器固定套,以及设置在滑块与传感器固定套之间的千分尺连接部,所述千分尺连接部的正面设置有千分尺连接孔;所述滑块可上下滑动地设置在所述滑槽内;所述压盖可拆卸地固定在滑槽的开口处,以限定所述滑块只能在滑槽内滑动;所述千分尺螺纹连接在螺母座上,所述千分尺的端部伸入所述千分尺连接孔内;所述千分尺连接部的背面设置有第一弹簧安装孔,所述底座上设置有第二弹簧安装孔,所述第一弹簧安装孔与第二弹簧安装孔之间设置有弹簧。In order to achieve the above object, the portable eddy current sensor field calibration device designed by the utility model includes a base, a sensor bracket and a micrometer, and the base includes a nut seat, a chute and a gland; the sensor bracket includes a slide block, a sensor fixing sleeve, and the micrometer connection part arranged between the slider and the sensor fixed sleeve, the front of the micrometer connection part is provided with a micrometer connection hole; the slider can be slid up and down in the slide groove; the pressure The cover is detachably fixed at the opening of the chute, so as to limit that the slider can only slide in the chute; the micrometer is screwed on the nut seat, and the end of the micrometer extends into the micrometer connecting hole ; The back of the micrometer connecting part is provided with a first spring installation hole, the base is provided with a second spring installation hole, and a spring is provided between the first spring installation hole and the second spring installation hole.

该装置进行现场标定过程为:将电涡流传感器安装在传感器支架上,合理调整传感器支架和传感器的位置,让传感器触头贴在清洁好的轴系表面;调节千分尺,得到传感器触头表面与轴系表面不同间隙,分别采集对应的信号,绘制传感器的输出特性曲线,用以现场测试使用。The on-site calibration process of the device is as follows: install the eddy current sensor on the sensor bracket, adjust the position of the sensor bracket and the sensor reasonably, and let the sensor contact stick to the clean shaft surface; adjust the micrometer to obtain the contact surface of the sensor and the shaft According to different gaps on the surface, the corresponding signals are collected respectively, and the output characteristic curve of the sensor is drawn for on-site testing.

优选地,所述底座的底面为两个120°夹角的光滑平面。Preferably, the bottom surface of the base is two smooth planes with an included angle of 120°.

优选地,所述压盖通过螺钉固定在所述滑槽上。Preferably, the gland is fixed on the chute by screws.

本实用新型的有益效果是:该装置利用千分尺来调节轴系表面与电涡流传感器间的相对位移信号,克服了传统标定中人工来操作工作环境恶劣、误差大的弊端,具有结构简单、维护性强、可靠性高等特点。The beneficial effect of the utility model is: the device uses a micrometer to adjust the relative displacement signal between the shafting surface and the eddy current sensor, overcomes the disadvantages of manual operation in the traditional calibration, which has a bad working environment and large errors, and has simple structure and maintainability. Strong, high reliability and other characteristics.

附图说明Description of drawings

图1为本实用新型所设计的便携式电涡流传感器现场标定装置的立体结构示意图。Fig. 1 is a three-dimensional structural schematic diagram of a portable eddy current sensor field calibration device designed by the utility model.

图2为图1中便携式电涡流传感器现场标定装置的主视结构示意图。Fig. 2 is a schematic diagram of the front view of the on-site calibration device for the portable eddy current sensor in Fig. 1 .

图3为图2的D-D向剖视结构示意图。FIG. 3 is a schematic diagram of a cross-sectional structure along the line D-D in FIG. 2 .

图4为图1中便携式电涡流传感器现场标定装置安装电涡流传感器的示意图。Fig. 4 is a schematic diagram of installing an eddy current sensor in the portable eddy current sensor field calibration device in Fig. 1 .

其中:底座1、螺母座1.1、滑槽1.2、底面1.3、第二弹簧安装孔1.4、压盖1.5、传感器支架2、滑块2.1、千分尺连接部2.2、千分尺连接孔2.3、第一弹簧安装孔2.4、传感器固定套2.5、千分尺3、弹簧4、螺钉5、电涡流传感器6、螺母7Among them: base 1, nut seat 1.1, chute 1.2, bottom surface 1.3, second spring installation hole 1.4, gland 1.5, sensor bracket 2, slider 2.1, micrometer connection part 2.2, micrometer connection hole 2.3, first spring installation hole 2.4, sensor fixing sleeve 2.5, micrometer 3, spring 4, screw 5, eddy current sensor 6, nut 7

具体实施方式detailed description

下面结合附图和具体实施例对本实用新型作进一步的详细说明。Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.

如图1~3所示,本实用新型所设计的便携式电涡流传感器现场标定装置,包括底座1、传感器支架2和千分尺3,各部分均采用非磁性材料制作。As shown in Figures 1 to 3, the portable eddy current sensor field calibration device designed by the utility model includes a base 1, a sensor bracket 2 and a micrometer 3, and each part is made of non-magnetic materials.

底座1包括螺母座1.1、滑槽1.2和压盖1.5。传感器支架2包括滑块2.1、传感器固定套2.5,以及设置在滑块2.1与传感器固定套2.5之间的千分尺连接部2.2。The base 1 includes a nut seat 1.1, a chute 1.2 and a gland 1.5. The sensor bracket 2 includes a slider 2.1, a sensor fixing sleeve 2.5, and a micrometer connecting portion 2.2 arranged between the slider 2.1 and the sensor fixing sleeve 2.5.

滑块2.1可上下滑动地设置在滑槽1.2内。压盖1.5通过螺钉5固定在滑槽1.2的开口处,用以限定滑块2.1使其只能在滑槽1.2内滑动。The slide block 2.1 is arranged in the chute 1.2 so as to slide up and down. Gland 1.5 is fixed on the opening of chute 1.2 by screw 5, in order to limit slider 2.1 so that it can only slide in chute 1.2.

千分尺连接部2.2的正面设置有千分尺连接孔2.3,背面设置有第一弹簧安装孔2.4。千分尺3螺纹连接在螺母座1.1上,千分尺3的端部插入千分尺连接孔2.3内并可推动传感器支架2向下位移。A micrometer connection hole 2.3 is provided on the front of the micrometer connection part 2.2, and a first spring installation hole 2.4 is provided on the back. The micrometer 3 is threaded on the nut seat 1.1, and the end of the micrometer 3 is inserted into the micrometer connecting hole 2.3 and can push the sensor bracket 2 to move downward.

底座1正对第一弹簧安装孔2.4的位置处设置有第二弹簧安装孔1.4,第一弹簧安装孔2.4与第二弹簧安装孔1.4之间设置有弹簧4,弹簧4对传感器支架2施加一个向上的支撑力。The base 1 is provided with a second spring installation hole 1.4 at the position facing the first spring installation hole 2.4, and a spring 4 is arranged between the first spring installation hole 2.4 and the second spring installation hole 1.4, and the spring 4 exerts a force on the sensor bracket 2. upward support.

底座1的底面1.3为两个120°夹角的光滑平面,两平面四条边完全平行。当底座1放在轴上时可以保证底座1的垂线过被测轴系的中心。The bottom surface 1.3 of the base 1 is two smooth planes with an included angle of 120°, and the four sides of the two planes are completely parallel. When the base 1 is placed on the shaft, it can be ensured that the vertical line of the base 1 passes through the center of the measured shaft system.

该装置进行现场标定过程为:如图4所示,电涡流传感器6通过上下两个螺母7安装在传感器支架2上,合理调整传感器支架2和电涡流传感器6的位置,让传感器触头贴在清洁好的轴系表面;调节千分尺3,使传感器支架2带着传感器上下移动,得到传感器触头表面与轴系表面的不同间隙,分别采集对应的信号,绘制传感器的输出特性曲线,完成标定。The on-site calibration process of the device is as follows: as shown in Figure 4, the eddy current sensor 6 is installed on the sensor bracket 2 through two upper and lower nuts 7, and the positions of the sensor bracket 2 and the eddy current sensor 6 are reasonably adjusted so that the sensor contacts are attached to the Clean the shafting surface; adjust the micrometer 3 so that the sensor bracket 2 moves up and down with the sensor to obtain different gaps between the sensor contact surface and the shafting surface, collect corresponding signals respectively, draw the output characteristic curve of the sensor, and complete the calibration.

Claims (3)

1. a kind of portable electric eddy current sensor in-situ calibration device, it is characterised in that:Including base (1), sensor stand (2) With micrometer (3), the base (1) includes nut seat (1.1), chute (1.2) and gland (1.5);The sensor stand (2) Including sliding block (2.1), sensor mounting sleeve (2.5), and it is arranged between sliding block (2.1) and sensor mounting sleeve (2.5) Micrometer connecting portion (2.2), the front of the micrometer connecting portion (2.2) is provided with micrometer connecting hole (2.3);The sliding block (2.1) can slide up and down to and be arranged in the chute (1.2);The gland (1.5) is removably attached to chute (1.2) At opening, can only be slided in chute (1.2) with limiting the sliding block (2.1);The micrometer (3) is threaded in nut seat (1.1) on, the end of the micrometer (3) is stretched into the micrometer connecting hole (2.3);The micrometer connecting portion (2.2) The back side be provided with the first spring mounting hole (2.4), second spring mounting hole (1.4), described are provided with the base (1) Spring (4) is provided between one spring mounting hole (2.4) and second spring mounting hole (1.4).
2. portable electric eddy current sensor in-situ calibration device according to claim 1, it is characterised in that:The base (1) bottom surface (1.3) is two 120 ° of smooth flats of angle.
3. portable electric eddy current sensor in-situ calibration device according to claim 1 and 2, it is characterised in that:The pressure Lid (1.5) is fixed on the chute (1.2) by screw (5).
CN201621370695.3U 2016-12-14 2016-12-14 Portable electric eddy current sensor in-situ calibration device Expired - Fee Related CN206269744U (en)

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Application Number Priority Date Filing Date Title
CN201621370695.3U CN206269744U (en) 2016-12-14 2016-12-14 Portable electric eddy current sensor in-situ calibration device

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Application Number Priority Date Filing Date Title
CN201621370695.3U CN206269744U (en) 2016-12-14 2016-12-14 Portable electric eddy current sensor in-situ calibration device

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111043944A (en) * 2019-12-27 2020-04-21 中水北方勘测设计研究有限责任公司 In-situ calibration device for eddy current displacement sensor
WO2024187853A1 (en) * 2023-03-14 2024-09-19 中国科学院深圳先进技术研究院 Three-degrees-of-freedom hall displacement sensor calibration system and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111043944A (en) * 2019-12-27 2020-04-21 中水北方勘测设计研究有限责任公司 In-situ calibration device for eddy current displacement sensor
WO2024187853A1 (en) * 2023-03-14 2024-09-19 中国科学院深圳先进技术研究院 Three-degrees-of-freedom hall displacement sensor calibration system and method

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