WO2010111904A1 - 一种磁性检测装置及设备 - Google Patents

一种磁性检测装置及设备 Download PDF

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Publication number
WO2010111904A1
WO2010111904A1 PCT/CN2010/070909 CN2010070909W WO2010111904A1 WO 2010111904 A1 WO2010111904 A1 WO 2010111904A1 CN 2010070909 W CN2010070909 W CN 2010070909W WO 2010111904 A1 WO2010111904 A1 WO 2010111904A1
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Prior art keywords
magnetic
pressure roller
elastic cylindrical
detecting device
roller assembly
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PCT/CN2010/070909
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English (en)
French (fr)
Inventor
伟文求
谭栋
刘梦涛
黄志军
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GRG Banking Equipment Co Ltd
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GRG Banking Equipment Co Ltd
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Publication of WO2010111904A1 publication Critical patent/WO2010111904A1/zh
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    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/04—Testing magnetic properties of the materials thereof, e.g. by detection of magnetic imprint

Definitions

  • the present invention relates to the field of magnetic detection, and in particular to a magnetic detection device and device.
  • the noise signal is also amplified by the same multiple, and the tiny piezoelectric Effects and the like can cause a lot of noise, which causes interference and difficulty in identification.
  • the banknote is difficult to be completely attached to the detection surface of the magnetic sensor due to the influence of wrinkles and air pressure, so that the signal-to-noise of the magnetic signal is relatively small, and the amplitude of the effective signal is small, so In the magnetic anti-counterfeiting detection of banknotes, it is difficult to quantitatively detect the magnetic distribution or magnetic encoding of the genuine banknotes.
  • a pressure roller is often added on the upper part of the magnetic sensor to facilitate the sticking of the banknote on the detecting surface of the magnetic sensor.
  • the Chinese Patent Publication No. CN1818978A mentions that the driving roller is disposed at the relative position of the magnetic sensor, and China.
  • Patent Publication No. CN200993799Y also mentions that a plurality of head pressure rollers are hooked on the corresponding positions of the magnetic sensors, but in practical applications, it is often difficult to achieve good detection of the magnetic signals of the banknotes.
  • the magnetic sensor Since the magnetic signal such as magnetic ink on the surface of the banknote is weak, the magnetic sensor generally has a high amplification factor and high sensitivity, and the arrangement of the transfer roller at the relative position of the magnetic sensor tends to cause a large piezoelectric effect noise.
  • the invention provides a magnetic detecting device and device, which solves the problem that the signal-to-noise ratio is small when the weak and sensitive signals such as the magnetic ink of the banknote, the bill and the magnetic line of the security thread are detected, and the signal amplitude is not large, which can be improved.
  • the identification of the banknotes anti-counterfeiting ability and stability.
  • the invention provides a magnetic detecting device, comprising a magnetic sensor and a pressure roller assembly, wherein a magnetic object is transmitted through a transmission channel between the magnetic sensor and the pressure roller assembly for magnetic detection, and the pressure roller assembly comprises a a driving roller and an elastic cylindrical pressing wheel sleeved on the driving roller, wherein the surface of the elastic cylindrical pressing wheel is a thread-shaped flexible deformation narrow strip.
  • the elastic cylindrical pinch has a hardness of between 35 degrees Shore and 43 degrees Shore.
  • the thread-shaped flexible deformation strips are finely spaced and uniformly hooked on the surface of the elastic cylinder.
  • the elastic cylindrical pressure is a high wear resistant material fluororubber, or fluorosilicone rubber, or chlorosulfonated polyethylene rubber, or polyurethane.
  • the pressure roller assembly further includes an adjustment mechanism with an eccentric wheel, the rotation center of the adjustment structure being offset from the axis of the drive roller.
  • the adjustment mechanism with the eccentric is adjusted in accordance with the type of paper passing through the transport path.
  • the eccentric wheel in the adjusting mechanism with the eccentric wheel rotates around the spindle center at an angle of between 0 and 30 degrees.
  • the present invention also provides a magnetic detecting apparatus comprising: a mechanism for inputting a magnetic substance and a mechanism for outputting a magnetic substance, the mechanism and the magnetic substance having a magnetic substance at the input a magnetic detecting device is disposed between the mechanisms, wherein the magnetic detecting device comprises a magnetic sensor and a pressure roller assembly, and the magnetic object is transmitted through the transmission channel between the magnetic sensor and the pressure roller assembly for magnetic detection,
  • the pressure roller assembly includes a driving roller and an elastic cylindrical pressing wheel sleeved on the driving roller, and the surface of the elastic cylindrical pressing wheel is a thread-shaped flexible deformation narrow strip.
  • the elastic cylindrical pressing wheel has a hardness of between 35 degrees Shore and 43 degrees Shore.
  • the thread-shaped flexible deformation strips are closely spaced and uniformly hooked on the surface of the elastic cylindrical pressure roller.
  • the elastic cylindrical pressure is a high wear-resistant material fluororubber, or fluorosilicone rubber, or chlorosulfonated polyethylene rubber, or polyurethane.
  • the pressure roller assembly further includes an adjustment mechanism with an eccentric wheel, and the upper and lower positions of the pressure roller assembly are adjusted by the adjustment mechanism with an eccentric wheel, thereby adjusting between the elastic cylindrical pressure roller and the magnetic sensor The distance of the transmission channel, the adjustment mechanism with the eccentric wheel according to the paper passing through the transmission channel Type is adjusted.
  • the eccentric wheel in the adjusting mechanism with the eccentric wheel rotates around the spindle from 0 to 30 degrees.
  • the magnetic object When detecting that the magnetic object passes through the transmission channel, the magnetic object is pressed on the magnetic sensor through a narrow flexible deformation on the pressure roller assembly, and the noise signal of the magnetic sensor caused by the piezoelectric effect is small. It can simultaneously ensure the increase of the effective signal amplitude, thereby improving the anti-counterfeiting ability and stability of the banknote identification.
  • FIG. 1 is a perspective view showing the structure of a magnetic detecting device in an embodiment of the present invention
  • FIG. 2 is a schematic structural view of a pressure roller assembly in an embodiment of the present invention.
  • Figure 3 is a front elevational view showing the magnetic detecting apparatus in the embodiment of the present invention.
  • Figure 4 is a front elevational view showing an adjustment mechanism with an eccentric wheel in an embodiment of the present invention
  • Fig. 5 shows another front view of the adjustment mechanism with the eccentric wheel in the embodiment of the invention.
  • the embodiment of the invention provides a magnetic detecting device and device, which solves the problem that the signal-to-noise ratio is small and the signal amplitude is small when detecting weak and sensitive signals such as magnetic inks of bills and bills and magnetic lines of security lines. It can improve the identification and anti-counterfeiting ability and stability of banknotes.
  • FIG. 1 is a schematic perspective view of a magnetic detecting device according to an embodiment of the present invention, the device includes a magnetic sensor 30 and a pressure roller assembly, and a magnetic object is transmitted through a transmission channel between the magnetic sensor 30 and the pressure roller assembly (here The banknote 5 is exemplified for magnetic detection.
  • the pressure roller assembly 20 includes a driving roller 8 and an elastic cylindrical pressure roller 20 sleeved on the driving roller 8, and an elastic cylindrical pressure.
  • the surface of the wheel 20 is a thread-shaped flexible deformed strip.
  • the detection range of the magnetic sensor 30 can be covered, and the surface of the elastic cylindrical pressure roller 20 has a threaded (or toothed) narrow strip with a uniform hook and a small interval, and the elastic cylinder thereof
  • the optimum width of the threaded flexible strip on the surface of the pressure roller 20 is 2 mm.
  • the surface of the elastic cylindrical pressing wheel 20 has evenly spaced thread-shaped (or tooth-like) narrow strips, when the bills are transported through, they are only in contact with the narrow strips having elasticity, and when subjected to pressure, the strips are not only in the longitudinal direction ( The direction of the vertical axis is contracted and deformed, and oblique deformation can also occur in the lateral direction (along the axis), thereby making the noise signal caused by the piezoelectric effect or the like while ensuring that the banknote-to-measurement element is close to the magnetic sensor 30.
  • the magnetic detecting device shown in FIG. 1 further includes an adjusting mechanism 1 with an eccentric wheel for adjusting the elastic cylinder by adjusting the upper and lower positions of the pressure roller assembly.
  • the distance between the pressure roller 20 and the magnetic sensor 30 is the transmission path.
  • the adjustment mechanism with the eccentric wheel is adjusted according to the type of paper passing through the conveying path, and the eccentric wheel in the adjustment mechanism with the eccentric wheel is rotated around the spindle from 0 to 30 degrees.
  • Figure 3 is a front elevational view of the magnetic detecting apparatus of Figure 1, wherein the magnetic detecting apparatus is illustrated in conjunction with Figures 1 and 2, the adjusting mechanism 1 with the eccentric includes a left and right adjusting mechanism 10, an eccentric 2 and a bearing 3; It is composed of upper and lower transmission channel plates 40.
  • 4 and 5 show a front view of an adjustment mechanism 1 with an eccentric wheel in an embodiment of the invention, showing an adjustment mechanism 1 with an eccentric wheel, an eccentric piece 2, a shaft 7
  • the elastic cylindrical pressure roller 20 and the magnetic sensor 30 are adjusted to a suitable distance by adjusting the rotation angle of the eccentric shaft of the eccentric wheel, and the output signals of the sensitive components such as the magnetic sensor can be viewed through an output device such as an oscilloscope.
  • the amplitude and the signal-to-noise ratio are used to determine the optimal value of its distance.
  • the adjusting mechanism 1 with the eccentric wheel achieves the purpose of finely adjusting the detection distance by the eccentric distance and the scale mark on the eccentric piece 2, thereby obtaining a large signal-to-noise ratio, which is convenient for the recognition algorithm detection.
  • By rotating around the axis 0' of the eccentric piece its axis 0 changes with the axis.
  • the first adjustment is performed after the first adjustment, so the S angle is small, so the horizontal position change distance of the eccentric axis can be approximately ignored.
  • the eccentric sheet can be roughly marked with a scale, so that it is convenient to realize the fine adjustment of the detection distance between the elastic cylindrical pressure roller and the sensitive component.
  • the distance between the cylindrical pressure roller and the magnetic sensor transmission channel can be adjusted according to the type of the magnetic object, and the distance is usually adjusted to about 0.2 mm according to the thickness of the banknote to be detected, combined with the normal transmission.
  • the detection state it is necessary to detect whether the actual detection gap at this time is appropriate. For example, whether the signal-to-noise ratio and the amplitude satisfy the requirements, the quality of the measured signal can be directly observed by an oscilloscope, and the elastic cylindrical pressure roller can also be detected by an optical test instrument.
  • the actual distance between the transmission channel 20 and the magnetic sensor 30 is within the theoretical range. If the requirements are not met, the angle of rotation of the adjustment mechanism 1 with the eccentric is fine-tuned to meet the actual detection requirements.
  • the magnetic detecting device is mainly used for detecting the magnetic distribution of the ink on the upper surface of the paper and the magnetic encoding of the magnetic security thread, etc., and can also be applied to the verification process of the coin, and the banknote identification mainly set in the ATM machine. Between the inlet and outlet of the device, it is used to detect magnetic safety wires in coins, and so on.
  • the elastic cylindrical pressure roller 20 checks the magnetic code of the security thread such as banknotes. The test also has a good effect.
  • the interval between the narrow strips on the surface of the elastic cylindrical pressure roller 20 is small, about twice the width of the safety thread, and the threaded narrow strip can be obliquely deformed in the lateral direction of the bill, even if the wrinkled bill passes through the magnetic
  • the safety line portion can also be well detected, and the amplitude of the magnetic coded signal can be accurately confirmed.
  • the thread-shaped flexible deformation strip on the elastic cylindrical pressing wheel can make the surface of the banknote-like object to be better approached to the detecting surface of the sensitive detecting component such as a magnetic sensor, so that the ink and metal on the surface of the banknote are made.
  • the signal amplitude of the safety line is larger, and does not generate too much noise signal, so that the effective signal is better recognized and detected.
  • the distance between the surface of the banknote-like object to be detected and the detecting surface of the sensitive detecting component such as the magnetic sensor is adjusted, so that the surface of the banknote and the sensitive sensor such as the magnetic sensor are detected.
  • the distance of the surface is fixed to meet the needs of different types of paper inspection.
  • the magnetic detecting device in the embodiment of the invention can accurately detect weak sensitive signals such as magnetic ink on the paper, the ticket or the security line code, thereby improving the anti-counterfeiting ability and stability of the banknote.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)

Description

一种磁性检测装置及设备
本申请要求于 2009 年 04 月 02 日提交中国专利局、 申请号为 200910038381.1、 发明名称为"一种磁性检测装置及设备"的中国专利申请的优 先权， 其全部内容通过引用结合在本申请中。
技术领域
本发明涉及磁性检测领域， 尤其涉及一种磁性检测装置及设备。
背景技术
现有的自动存取款机（Automatic Teller Machine , ATM )及点钞机等金 融设备中都有纸币的真假识别检测装置，而主要针对纸币表面油墨的磁性分布 和磁性安全线的磁性编码进行检测。但是目前由于纸币表面的磁性油墨的磁性 较弱， 一般直接检测的电压幅值都在微伏级（约 50 左右）， 在使用的过程中都 需要经过几万乃至几十万倍的放大，故检测过程中磁性传感器等检测元件与纸 币类待测量件的微小距离变化都会引起很大的有效信号幅值的波动，在对信号 放大的同时， 噪声信号亦得到同倍数的放大，微小的压电效应等都会引起很大 的噪声，从而给识别带来干扰和难度。 另在传输过程中纸币由于褶皱和空气压 力等影响， 在识别检测装置中很难完全贴在磁性传感器检测表面上，从而磁信 号的信噪比较小，有效信号的幅值较小，故在纸币的磁性防伪检测中很难对真 钞的磁性分布或磁性编码做到定量的检测。
现有的识别检测装置中往往在磁性传感器的上部增加压轮，以利于纸币贴 在磁性传感器的检测表面上， 如中国专利公开号 CN1818978A中提到在磁性传 感器相对位置上配置传动辊， 以及中国专利公开号 CN200993799Y中亦提到在 磁性传感器的对应位置上均勾设置若干磁头压轮，但在实际的应用中往往很难 实现对纸币磁信号的很好检测。 由于纸币表面的磁性油墨等磁信号较弱，磁传 感器一般具有很高的放大倍数， 灵敏度较高，在磁性传感器相对位置上配置传 动辊易引起较大的压电效应噪声。
发明内容
本发明提供了一种磁性检测装置及设备，解决了对类似于纸币、票据的磁 性油墨及安全线磁编码等微弱、敏感信号检测时信噪比小，信号幅值不大的问 题， 可提高纸币的鉴别防伪能力和稳定性。 本发明提供了一种磁性检测装置， 包括磁性传感器和压轮组件， 通过所述 磁性传感器和所述压轮组件间的传输通道传输带有磁性的物件进行磁性检测， 所述压轮组件包括一传动辊和套在所述传动辊上的弹性圆柱状压轮，所述弹性 圆柱状压轮表面为螺纹状的柔性变形窄条。
优选地， 所述弹性圆柱状压轮的硬度为邵氏 35度至邵氏 4 3度之间。
优选地，所述螺纹状的柔性变形窄条间隔细小且均勾的分布在所述弹性圆 柱^大压轮表面。
优选地， 所述弹性圆柱状压为高耐磨材料氟橡胶、 或氟硅橡胶、 或氯磺化 聚乙烯橡胶、 或聚氨脂。
优选地， 所述压轮组件还包括带有偏心轮的调节机构， 所述调节结构的旋 转中心偏离所述传动辊的轴心。
优选地，所述带有偏心轮的调节机构根据通过所述传输通道的纸张的类型 进行调节。
优选地，所述带有偏心轮的调节机构中的偏心轮左右绕主轴心旋转角度为 Q度到 30度之间。
相应的， 本发明还提供了一种磁性检测设备， 其包括一输入带有磁性物质 的机构和一输出带有磁性物质的机构，在所述输入带有磁性物质的机构与输出 带有磁性物质的机构间设有一磁性检测装置， 其特征在于， 所述磁性检测装置 包括磁性传感器和压轮组件，通过所述磁性传感器和所述压轮组件间的传输通 道传输带有磁性物件进行磁性检测 ,所述压轮组件包括一传动辊和套在所述传 动辊上的弹性圆柱状压轮， 所述弹性圆柱状压轮表面为螺纹状的柔性变形窄 条。
其中所述弹性圆柱状压轮的硬度为邵氏 35度至邵氏 43度之间。所述螺纹状 的柔性变形窄条间隔细小且均勾的分布在所述弹性圆柱状压轮表面。其中弹性 圆柱状压为高耐磨材料氟橡胶、或氟硅橡胶、或氯磺化聚乙烯橡胶、或聚氨脂。 所述压轮组件还包括带有偏心轮的调节机构，通过所述带有偏心轮的调节机构 调节所述压轮组件的上下位置，从而调节所述弹性圆柱状压轮与所述磁性传感 器间传输通道的距离，带有偏心轮的调节机构根据通过所述传输通道的纸张的 类型进行调节。所述带有偏心轮的调节机构中的偏心轮左右绕主轴心旋转角度 为 0度到 30度之间。
在检测带有磁性物件通过所述传输通道时，通过压轮组件上的柔性变形窄 带来压紧该带有磁性物件在磁性传感器上，其由压电效应引起的磁性传感器的 噪声信号较小， 能同时保证有效信号幅值增大，从而提高纸币鉴别防伪能力和 稳定性。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施 例或现有技术描述中所需要使用的附图作筒单地介绍，显而易见地， 下面描述 中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲， 在不付 出创造性劳动性的前提下， 还可以根据这些附图获得其他的附图。
图 1示出了本发明实施例中的磁性检测设备的立体结构示意图；
图 2示出了本发明实施例中的压轮组件结构示意图；
图 3示出了本发明实施例中的磁性检测设备的主视图；
图 4示出了本发明实施例中的带有偏心轮的调节机构主视图；
图 5示出了本发明实施例中的带有偏心轮的调节机构另一主视图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清 楚、 完整地描述， 显然， 所描述的实施例仅仅是本发明一部分实施例， 而不是 全部的实施例。基于本发明中的实施例， 本领域普通技术人员在没有做出创造 性劳动前提下所获得的所有其他实施例， 都属于本发明保护的范围。
本发明实施例提供了一种磁性检测装置及设备， 解决了对类似于纸币、 票据的磁性油墨及安全线磁编码等微弱、敏感信号检测时信噪比小， 信号幅 值不大的问题， 可提高纸币的鉴别防伪能力和稳定性。
下面结合附图来详细说明本发明实施例中的具体实施例。
图 1为本发明实施例中的磁性检测设备的立体结构示意图，该设备包括磁 性传感器 30和压轮组件，通过该磁性传感器 30和压轮组件间的传输通道传输 带有磁性的物件（这里以纸币 5为例来进行说明的 )进行磁性检测， 该压轮组 件 20包括一传动辊 8和套在传动辊 8上的弹性圆柱状压轮 20, 弹性圆柱状压 轮 20表面为螺纹状的柔性变形窄条。
图 2示出了本发明实施例中的压轮组件结构示意图，该压轮组件包括弹性 圆柱状压轮 20和传动辊 8 , 其中： 弹性圆柱状压轮 20的耐磨材料可以为氟 橡胶 （FPM ), 氟硅橡胶 （FMVQ ), 氯磺化聚乙烯橡胶 （CSM ), 优选为 聚氨酯 （PU ), 另外弹性圆柱状压轮 20的硬度范围在邵氏 35-43度之间进 行取值。 通过实施本发明实施例中的压轮组件， 可覆盖磁性传感器 30所检测 范围， 同时弹性圆柱状压轮 20表面具有均勾、 细小间隔的螺纹状（或称牙状） 窄条， 其弹性圆柱状压轮 20表面的螺纹状柔性窄条的最佳宽度为 2mm。 当 纸币类待测量元件被传送通过磁性传感器 30表面时， 由于经过磁性传感器 30 表面的敏感信号的幅值够大，信噪比大，且不会产生遗漏，其表面的磁性油墨、 安全线等敏感信号可以被很好检测出。 另由于弹性圆柱状压轮 20表面具有均 匀间隔的螺纹状（或称牙状）窄条， 当纸币传送通过时， 仅与具有弹性的窄条 接触， 当受到压力时， 窄条不仅在纵向 （垂直轴心）方向发生收缩形变， 而且 在横向（沿轴心）上也可以发生倾斜变形， 从而在保证纸币类待测量元件与磁 性传感器 30贴近的同时，使由压电效应等引起的噪声信号较小、稳定性较好， 且保证了较大的信噪比和精度；同时由于弹性螺纹状窄条能较好的压紧纸币等 待测量元件的局部位置， 故对于柔软、褶皱的残旧纸币的磁信号检测亦有较好 的效果。
需要说明的是，在图 1中所示的磁性检测设备中还包括带有偏心轮的调节 机构 1 , 该带有偏心轮的调节机构 1用于通过调节压轮组件的上下位置来调节 弹性圆柱状压轮 20和磁性传感器 30间传输通道的距离。该带有偏心轮的调节 机构根据通过传输通道的纸张的类型进行调节，该带有偏心轮的调节机构中的 偏心轮左右绕主轴心旋转角度为 0度到 30度之间。
图 3为图 1中磁性检测设备的主视图，这里结合图 1和图 2中说明磁性检 测设备，该带有偏心轮的调节机构 1包括左右调节机构 10、偏心片 2和轴承 3; 传输通道由上下传输通道板 40构成。 图 4和图 5示出了本发明实施例中的带 有偏心轮的调节机构 1的主视图， 其示出了带有偏心轮的调节机构 1、 偏心片 2、 轴 7| 3和传动辊 8 , 其中 0为传动辊 8的轴心， 0'为偏心片的轴心。 需要说明的是，这里通过调节偏心轮偏心轴心的旋转角度来调节弹性圆柱 状压轮 20和磁性传感器 30到合适的距离，可以通过输出装置如示波器等查看 磁性传感器等敏感元件的输出信号的幅值和信躁比， 从而确定其距离的最优 值。该带有偏心轮的调节机构 1通过偏心的距离及偏心片 2上的刻度标记来达 到微调测检测距的目的， 从而得到较大的信噪比， 便于识别算法检测。 通过绕 偏心片的轴心 0'旋转， 其轴心 0就随着发生变化， 当偏心轮左右偏心时， 绕 偏心片的轴心 0，旋转偏心轮， 就可主要调整传动辊 8的上下位移， 从而调整 套在传动辊 8上的弹性圆柱压轮 20的上下位移， 假设偏心距为向左偏心"， 绕主轴心旋转角度为^ 则偏心轴在上下位置上变化的距离 Z = " x sin 此时水 平 位 置 变 化 距 离 = a - a x C0 。 当 =30。 时 ， / = x sin = « , = a - a x cos ^ * 0.13« , 若设定偏心轮的调节角度 S为 ±30。时， 则偏心轴的上下 位置则偏心轴的上下位置变化距离卿为 ± 0·5" ,即总的调节距离为一个偏心距， 而在此调节范围内偏心轴的水平位置变化距离 = ±0·Β« , 此相对于上下位置 较小。 而在实际使用中， 都是先行安装后再行微调整， 所以 S角较小， 故偏心 轴的水平位置变化距离 可以近似忽略。 同时依据量程， 大致可以对偏心片进 行刻度标记， 从而很方便实现弹性圆柱状压轮与敏感元件检测距离的微调节。
在实际应用过程中，可以根据带有磁性物件的类型来调节圆柱状压轮和磁 性传感器间传输通道的距离， 通常依据待检测纸币的厚度将该距离调节到约 0.2mm左右， 结合正常的传输检测状态，需要检测此时的实际检测间隙是否合 适， 如信噪比、 幅值是否满足要求， 其可以通过示波器直接观察被测量信号的 质量， 也可以通过光学测试仪器检测调节弹性圆柱状压轮 20和磁性传感器 30 间传输通道的实际距离是否在理论范围内。如果不满足要求， 则微调节带有偏 心轮的调节机构 1的旋转角度来满足实际的检测需求。
需要说明的是，该磁性检测设备其主要用于检测纸张上表面油墨的磁性分 布以及磁性安全线的磁性编码等等， 其也可以应用于钱币的验证过程中， 主要 设置在 ATM机的钞票识别装置的进出钞口之间， 用于检测钱币中的磁性安全 线等等。 在具体实施中， 该弹性圆柱状压轮 20对于纸币等安全线磁编码的检 测亦有良好的效果。 由于弹性圆柱状压轮 20表面的 （或称牙状） 窄条的间隔 较小， 约为两倍安全线的宽度， 且螺纹状窄条可在纸币横向方向倾斜变形， 就 算褶皱的纸币通过磁性传感器与压轮时， 安全线部分也能得到很好的检测，磁 编码信号幅值等亦能精确得到确认。
综上所述，该弹性圆柱状压轮上的螺纹状的柔性变形窄条能使钞票类待测 物表面更好的与磁性传感器等敏感检测元件的检测表面接近，使钞票表面的油 墨、 金属安全线的信号幅值更大， 且不会产生太大的噪声信号， 从而较好的识 别和检测出有效信号。通过使用带有偏心轮机构调整弹性圆柱状压轮的上下位 置的，从而调整钞票类待检测物表面与磁性传感器等敏感检测元件检测表面的 距离， 以使钞票表面与磁传感器等敏感检测元件检测表面的距离是固定的，从 而满足不同类型纸张检测的需求。通过本发明实施例中磁性检测设备可以精确 检测出类似于纸张、票据上的磁性油墨或者安全线编码等微弱敏感信号，从而 提高纸币的鉴别防伪能力和稳定性。
以上所揭露的仅为本发明较佳实施例而已，当然不能以此来限定本发明之 权利范围，因此依本发明权利要求所作的等同变化，仍属本发明所涵盖的范围。

Claims

权 利 要 求
1、 一种磁性检测装置， 包括磁性传感器和压轮组件， 通过所述磁性传感 器和所述压轮组件间的传输通道传输带有磁性的物件进行磁性检测，其特征在 于， 所述压轮组件包括一传动辊和套在所述传动辊上的弹性圆柱状压轮， 所述 弹性圆柱状压轮表面为螺纹状的柔性变形窄条。
2、 如权利要求 1所述的磁性检测装置， 其特征在于， 所述弹性圆柱状压 轮的硬度为邵氏 35度至邵氏 43度之间。
3、 如权利要求 1所述的磁性检测装置， 其特征在于， 所述螺纹状的柔性 变形窄条均勾的分布在所述弹性圆柱状压轮表面。
4、 如权利要求 1所述的磁性检测装置， 其特征在于， 所述弹性圆柱状压 为高耐磨材料氟橡胶、 或氟硅橡胶、 或氯磺化聚乙烯橡胶、 或聚氨脂。
5、 如权利要求 1至 4任一项所述的磁性检测装置， 其特征在于， 所述压 轮组件还包括带有偏心轮的调节机构，所述调节结构的旋转中心偏离所述传动 昆的轴心。
6、 如权利要求 5所述的磁性检测装置， 其特征在于， 所述带有偏心轮的 调节机构根据通过所述传输通道的纸张的类型进行调节。
7、 如权利要求 5所述的磁性检测装置， 其特征在于， 所述带有偏心轮的 调节机构中的偏心轮左右绕主轴心旋转角度为 0度到 30度之间。
8、 一种磁性检测设备， 其包括一输入带有磁性物质的机构和一输出带有 磁性物质的机构，在所述输入带有磁性物质的机构与输出带有磁性物质的机构 间设有一磁性检测装置， 其特征在于， 所述磁性检测装置包括磁性传感器和压 轮组件，通过所述磁性传感器和所述压轮组件间的传输通道传输带有磁性物件 进行磁性检测，所述压轮组件包括一传动辊和套在所述传动辊上的弹性圆柱状 压轮， 所述弹性圆柱状压轮表面为螺纹状的柔性变形窄条。
9、 如权利要求 8所述的磁性识别设备， 其特征在于， 所述压轮组件还包 括带有偏心轮的调节机构，通过所述带有偏心轮的调节机构调节所述弹性圆柱 状压轮与所述磁性传感器间传输通道的距离。
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