A sheet-like medium detection device with foreign objects attached to the surface

Abstract

An embodiment of the present invention provides a sheet medium detection device with foreign objects stuck on its surface, which is used for quickly identifying the medium to be detected with foreign objects stuck on its surface. The technical solution of the embodiment of the present invention includes: a sheet-type medium detection device with foreign objects stuck on the surface, including an electrostatic supply part that provides electrostatic charges, a medium transport part that transports the medium to be detected, and an electrostatic induction identification part. The medium transport part includes sequentially connected Electrostatic receiving unit, electrostatic adsorption unit, the electrostatic receiving unit is connected to the electrostatic supply part, the electrostatic adsorption unit is connected to the electrostatic induction identification part; the electrostatic receiving unit is used to transfer the electrostatic charge obtained from the electrostatic supply part to the medium to be detected, and the electrostatic adsorption unit is used In order to absorb the electrostatic charge of the medium to be detected, the electrostatic induction identification part is used for judging whether foreign objects are pasted on the surface of the medium to be detected according to the received electrostatic pattern of the medium to be detected.

Description

technical field [0001] The invention relates to the field of identification, in particular to a sheet medium detection device with foreign objects pasted on the surface. Background technique [0002] In the field of existing financial service equipment, the detection of foreign matter pasted on the surface of banknotes is currently commonly used to identify the thickness of foreign matter on mechanical contact with banknotes. This method is realized through the relative rotational movement of the active part and the driven part, wherein the active part is the thickness driving shaft, and the driven part touches the surface of the banknote to trace the thickness trajectory of the banknote. There is a high mutation phenomenon in the local area, and the local thickness trajectory of the banknote is too high, so as to achieve the recognition of the banknote with foreign matter on the surface. [0003] However, due to the machining accuracy requirements of the mechanical contact...

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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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