Magnetic detection device and equipment

A magnetic detection and magnetic sensor technology, applied in magnetic performance measurement, banknote authenticity inspection, instruments, etc., can solve the problems of small signal amplitude and small signal-to-noise ratio, and achieve small noise signal and increased amplitude , Improve the effect of anti-counterfeiting ability and stability

Inactive Publication Date: 2009-09-09
GRG BAKING EQUIP CO LTD
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Problems solved by technology

[0004] The invention provides a magnetic detection device and equipment, which solves the problem of small signal-to-noise ratio and small signal amplitude when detecting weak and sensitive

Method used

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  • Magnetic detection device and equipment
  • Magnetic detection device and equipment
  • Magnetic detection device and equipment

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Embodiment Construction

[0013] The embodiment of the present invention provides a magnetic detection device and equipment, which solves the problem of low signal-to-noise ratio and low signal amplitude when detecting weak and sensitive signals such as magnetic ink and security thread magnetic encoding similar to banknotes and bills. It can improve the identification and anti-counterfeiting ability and stability of banknotes.

[0014] The specific embodiments of the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0015] figure 1 It is a three-dimensional structural diagram of a magnetic detection device in an embodiment of the present invention. The device includes a magnetic sensor 30 and a pressure wheel assembly. The magnetic object (here, paper currency 5) is transported through the transmission channel between the magnetic sensor 30 and the pressure wheel assembly. As an example for illustration) for magnetic detection, the press...

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Abstract

The embodiment of the invention discloses a magnetic detection equipment and a magnetic detection device, comprising a magnetic sensor and a press wheel component; magnetic detection is carried out by transmitting magnetic objects through a transmission channel between the magnetic sensor and the press wheel component; the press wheel component comprises a driving roller and an elastic cylindrical press wheel which is sleeved on the driving roller; and the surface of the elastic cylindrical press wheel is a threaded flexible deformed narrow strip. By implementing the embodiment of the invention, the anti-counterfeit capability and the stability of bank note discrimination are improved.

Description

Technical field [0001] The invention relates to the field of magnetic detection, in particular to a magnetic detection device and equipment. Background technique [0002] Existing automatic teller machines (ATM) and banknote counters and other financial equipment have real and false identification detection devices for banknotes, and mainly focus on the magnetic distribution of ink on the surface of banknotes and the magnetic coding of magnetic security lines. Detection. However, at present, due to the weak magnetic properties of the magnetic ink on the surface of banknotes, the voltage amplitude that is generally directly detected is in the microvolt level (about 50μv). During use, it needs to be amplified by tens of thousands or even hundreds of thousands of times. During the detection process, the small distance changes between the magnetic sensor and other detection elements and the paper currency to be measured will cause great fluctuations in the effective signal amplitude....

Claims

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Application Information

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IPC IPC(8): G07D7/04G01R33/12
CPCG07D7/04
Inventor 伟文求谭栋刘梦涛黄志军
Owner GRG BAKING EQUIP CO LTD
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