CN102540109A - 磁场测量仪 - Google Patents

磁场测量仪 Download PDF

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CN102540109A
CN102540109A CN2010105986042A CN201010598604A CN102540109A CN 102540109 A CN102540109 A CN 102540109A CN 2010105986042 A CN2010105986042 A CN 2010105986042A CN 201010598604 A CN201010598604 A CN 201010598604A CN 102540109 A CN102540109 A CN 102540109A
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magnetic field
swing arm
measuring apparatus
field measuring
base
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梁焰
廖前龙
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Shenzhen Yuzhan Precision Technology Co ltd
Hon Hai Precision Industry Co Ltd
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Shenzhen Yuzhan Precision Technology Co ltd
Hon Hai Precision Industry Co Ltd
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Priority to CN2010105986042A priority Critical patent/CN102540109A/zh
Priority to US13/108,096 priority patent/US8742751B2/en
Publication of CN102540109A publication Critical patent/CN102540109A/zh
Pending legal-status Critical Current

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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
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/30—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y25/00—Nanomagnetism, e.g. magnetoimpedance, anisotropic magnetoresistance, giant magnetoresistance or tunneling magnetoresistance
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B3/00—Measuring instruments characterised by the use of mechanical techniques
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/142—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices
    • G01D5/145—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices influenced by the relative movement between the Hall device and magnetic fields
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/038—Measuring direction or magnitude of magnetic fields or magnetic flux using permanent magnets, e.g. balances, torsion devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/038—Measuring direction or magnitude of magnetic fields or magnetic flux using permanent magnets, e.g. balances, torsion devices
    • G01R33/0385—Measuring direction or magnitude of magnetic fields or magnetic flux using permanent magnets, e.g. balances, torsion devices in relation with magnetic force measurements

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Nanotechnology (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Measuring Magnetic Variables (AREA)

Abstract

一种磁场测量仪，其包括底座及设置底座上的测量机构，测量机构包括与底座相连的安装板、转动连接于安装板上的摆臂、固定连接于安装板顶部的连接块以及位于连接块及摆臂之间的弹性件，摆臂上连接有一个与底座相对的测量磁体，磁场测量仪还包括一个位移传感器，其设置于底座上且与摆臂相对。上述磁场测量仪具有可同时测量极性及强度且操作简单的优点。

Description

磁场测量仪
技术领域
本发明涉及一种磁场测量仪，尤其涉及一种可同时测量极性及强度的磁场测量仪。
背景技术
磁铁广泛应用于电子装置中，如扬声器等。在将磁铁装入电子装置的过程中，需要确保磁铁的安装方向正确，以及磁铁能提供足够的磁场强度，才能使电子装置正常工作。
现在通常采用高斯计来测定磁场的强度，高斯计包括主体部及与主体部连接的测量笔，主体部上设有显示屏。通过将测量笔与被测元件接触，显示屏会得到测量数值。
然而，高斯计无法测量出磁铁的南极和北极，因此，在安装过程中仍然会产生磁铁的安装方向错误的情况。另外，使用高斯计测量时，需与被测元件的多个部位进行接触，以确定其周围的磁场强度，操作较为繁琐。
发明内容
鉴于以上内容，有必要提供一种可同时测量磁铁极性和强度、操作简单的磁场测量仪。
一种磁场测量仪，其包括底座及设置底座上的测量机构，测量机构包括与底座相连的安装板、转动连接于安装板上的摆臂、固定连接于安装板顶部的连接块以及位于连接块及摆臂之间的弹性件，摆臂上连接有一个与底座相对的测量磁体，磁场测量仪还包括一个位移传感器，其设置于底座上且与摆臂相对。
上述磁场测量仪利用同极性的磁铁相互吸引、异极性的磁铁相互排斥的原理，只有待测磁体与测量磁体极性相同时，才能驱动摆臂旋转，并通过弹性件的弹力产生的力矩来平衡磁力矩使摆臂停止运动，然后通过位移传感器来测定摆臂的移动距离，以判断待测磁体产生的磁场强度是否符合要求。
附图说明
图1是本发明实施方式的磁场测量仪的立体示意图。
图2是图1所示磁场测量仪去除底座、安装板及位移传感器后的立体示意图。
图3是图2所示磁场测量仪的立体示意图。
图4是使用图1所示磁场测量仪对待测磁体进行检测的立体示意图。
主要元件符号说明
  磁场测量仪   100
  底座   20
  测量机构   30
  安装板   31
  轴承   32
  转轴   33
  摆臂   34
  测量磁体   35
  连接轴   36
  弹性件   38
  连接块   39
  位移传感器   40
  待测磁体   50
  安装孔   311
  连接段   341
  容纳槽   3411
  螺孔   3412
  配合段   342
  支撑部   3421
  测量端   3422
  固定件   343
  轴帽   361
  螺纹部   362
具体实施方式
下面结合附图及实施方式对本发明的磁场测量仪作进一步的详细说明。
请参阅图1至图3，本发明实施方式的磁场测量仪100包括底座20、设置于底座一侧的测量机构30以及与测量机构30相对设置的位移传感器40。本实施例中，底座20为矩形板状。
测量机构30包括两个相对设置的安装板31及安装在安装板31上的轴承32、转轴33、摆臂34、测量磁体35、连接轴36、弹性件38及连接块39。
安装板31在本实施例中为矩形板，其中部开设有安装孔311以容纳轴承32。
转轴33的两端分别与两个轴承32相连，两个轴承32分别定位于两个安装板31的安装孔311中。
摆臂34包括连接段341、配合段342以及连接两者的固定件343。连接段341的一端与转轴33固定连接，另一端与配合段342固定连接。连接段341的中部开设有容纳槽3411，容纳槽3411的底壁上开设于贯穿连接段341的螺孔3412。配合段342包括支撑部3421及由支撑部3421一端垂直延伸形成的测量端3422。测量磁体35安装于连接段341与配合段342相连的端部。
连接块39连接于两个安装板31的顶端。连接轴36的一端形成有轴帽361，另一端形成有螺纹部362。螺纹部362穿过连接块39上的通孔(图未示)后，螺入摆臂34的螺孔3412中。
弹性件38套设于连接轴36上，其一端与连接块39相抵持，另外一端抵持于摆臂34的容纳槽3411的底壁上。本实施例中，弹性件38为弹簧。
请同时参阅图4，使用磁场测量仪100测量待测磁铁50时，将待测磁铁50放在底座20上，并且与测量磁体35相对。当待测磁铁50与测量磁体35具有相同的极性时，两者之间产生的磁性斥力将使摆臂34绕转轴33逆时针旋转一定角度，并使连接轴36上升且弹性件38发生压缩而产生弹力。当测量磁体35与待测磁铁50之间的磁性斥力与弹性件38的弹力、摆臂34的重力在摆臂34产生的力矩达到平衡时，摆臂34停止转动。此时，位移传感器40将读出摆臂34的测量端3422产生的位移。当位移传感器40读出的数据超过一个内设的预定值时，与位移传感器40相连的灯泡(图未示)就会发光，表明待测磁铁50的磁场强度符合要求。
当待测磁铁50与测量磁体35的极性相反时，由于连接轴36的拉力，两者之间产生的磁性吸引力不能使摆臂34绕转轴33产生旋转。此时，可以判断待测磁铁50的极性不符合要求。
上述磁场测量仪100仅需将待测磁铁50放至于底座20上与测量磁体35相对的位置，即可判断待测磁铁50的极性，以及其产生的磁场强度是否符合要求，操作简单，具有较高的检测效率。另外，通过旋转连接轴36可改变螺纹部362螺入摆臂34的深度，从而调节弹性件38的预压力，以测定磁场强度更大的待测磁铁50是否合格，当然，也可通过更换弹性件38改变预压力。
可以理解，磁场测量仪100可不包括连接轴36，而使用弹性件38直接连接摆臂34及连接块39。磁场测量仪100也可仅包括一个安装板31及一个轴承32，摆臂34同样可以通过转轴33转动连接于安装板31的轴承32上。
另外，本领域技术人员还可在本发明精神内做其它变化，当然，这些依据本发明精神所做的变化，都应包含在本发明所要求保护的范围内。

Claims (10)

1.一种磁场测量仪，其包括底座及设置底座上的测量机构，其特征在于：所述测量机构包括与底座相连的安装板、转动连接于安装板上的摆臂、固定连接于安装板顶部的连接块以及位于连接块及摆臂之间的弹性件，所述摆臂上连接有一个与底座相对的测量磁体，所述磁场测量仪还包括一个位移传感器，其设置于底座上且与摆臂相对。
2.如权利要求1所述的磁场测量仪，其特征在于：所述磁场测量仪还包括转轴，所述摆臂通过转轴转动连接于安装板上。
3.如权利要求2所述的磁场测量仪，其特征在于：所述磁场测量仪还包括设置于安装板上的轴承，所述转轴连接于轴承上。
4.如权利要求1所述的磁场测量仪，其特征在于：所述磁场测量仪还包括连接轴，所述连接轴活动连接于连接块，且与摆臂固定连接。
5.如权利要求4所述的磁场测量仪，其特征在于：所述连接轴的一端形成形成有螺纹部，所述摆臂上开设有螺孔，所述螺纹部螺入摆臂的螺孔。
6.如权利要求4所述的磁场测量仪，其特征在于：所述弹性件套设于连接轴上，且两端分别与摆臂与连接块相抵持。
7.如权利要求6所述的磁场测量仪，其特征在于：所述摆臂上开设有与螺孔相连通的容纳槽，所述弹性件的一端与连接块相抵持，另一端抵持于摆臂的容纳槽中。
8.如权利要求1所述的磁场测量仪，其特征在于：所述摆臂包括连接段、配合段以及连接两者的固定件，所述连接段与安装板转动连接。
9.如权利要求8所述的磁场测量仪，其特征在于：所述测量磁体装设于连接段与配合段相连接的端部。
10.如权利要求8所述的磁场测量仪，其特征在于：所述配合段包括支撑部及由支撑部一端垂直延伸形成的测量端，所述测量端与位移传感器相对设置。
CN2010105986042A 2010-12-21 2010-12-21 磁场测量仪 Pending CN102540109A (zh)

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US13/108,096 US8742751B2 (en) 2010-12-21 2011-05-16 Magnetic field measuring device

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CN104730472A (zh) * 2013-12-20 2015-06-24 贵阳铝镁设计研究院有限公司 一种弹簧磁力计
CN112683152A (zh) * 2020-12-18 2021-04-20 重庆理工大学 一种接触式微位移检测装置
CN112858968A (zh) * 2021-01-28 2021-05-28 浙江英洛华引力科技有限公司 磁回中力检测装置

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* Cited by examiner, † Cited by third party
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CN104730472A (zh) * 2013-12-20 2015-06-24 贵阳铝镁设计研究院有限公司 一种弹簧磁力计
CN112683152A (zh) * 2020-12-18 2021-04-20 重庆理工大学 一种接触式微位移检测装置
CN112683152B (zh) * 2020-12-18 2022-04-22 重庆理工大学 一种接触式微位移检测装置
CN112858968A (zh) * 2021-01-28 2021-05-28 浙江英洛华引力科技有限公司 磁回中力检测装置
CN112858968B (zh) * 2021-01-28 2024-05-28 浙江英洛华引力科技有限公司 磁回中力检测装置

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