Detector for sheet class media with foreign bodies stuck to surfaces

Abstract

The embodiment of the invention provides a detector for sheet class media with foreign bodies stuck to the surfaces, and aims to rapidly recognize to-be-detected media with foreign bodies stuck to the surfaces. The detector is characterized by comprising an electrostatic supply part for providing electrostatic charge, a media transporting part for transporting the to-be-detected media and an electrostatic induction recognizing part; the media transporting part comprises an electrostatic receiving unit and an electrostatic absorbing unit which are connected in sequence; the electrostatic receiving unit is connected with the electrostatic supply part; the electrostatic absorbing unit is connected with the electrostatic induction recognizing part; the electrostatic receiving unit is used for transferring electrostatic charge obtained from the electrostatic supply part to the to-be-detected media; the electrostatic absorbing unit is used for absorbing the electrostatic charge of the to-be-detected media; the electrostatic induction recognizing part is used for judging whether foreign bodies are stuck to the surfaces of the to-be-detected media or not according to a received electrostatic pattern of the to-be-detected media.

Description

technical field [0001] The invention relates to the field of identification, in particular to a sheet-like medium detection device with foreign objects attached to the surface. Background technique [0002] In the field of existing financial service equipment, the detection method of foreign matter attached to the surface of banknotes is currently a method of discriminating the thickness of foreign matter by mechanical contact. This method is realized by the relative rotational motion of the active part and the driven part, in which the active part is the thickness driving shaft, and the driven part contacts the surface of the banknote to describe the thickness track of the banknote. When encountering foreign objects pasted on the surface of the banknote, the driven part will There is a high degree of sudden change in the local area, and the local thickness trajectory of the banknote is high, so as to achieve the recognition of the foreign currency banknotes pasted on the su...

AI Technical Summary

Problems solved by technology

[0003] However, due to the machining accuracy requirements of the mechanical contact thickness identification device, the machining accuracy of the full runout of the thickness driving shaft and the driven shaft is extremely strict, resulting in high manufacturing and processing costs; There will be gaps, resulting in partial missed detection of banknotes and reducing the recognition rate of foreign banknotes

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