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Banknote foreign object detection using pressure sensing array

A pressure sensor and banknote technology, which is applied in the measurement of the property force of the piezoelectric resistance material, the verification of the authenticity of the banknote, and the measurement force, etc., can solve the problems of damage to the banknote processing element of the automatic teller machine, etc.

Active Publication Date: 2019-05-03
NCR CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Foreign objects such as staples, paper clips, or rubber bands have the potential to damage one or more of the banknote processing elements inside the ATM

Method used

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  • Banknote foreign object detection using pressure sensing array
  • Banknote foreign object detection using pressure sensing array
  • Banknote foreign object detection using pressure sensing array

Examples

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Embodiment Construction

[0012] Foreign objects have the potential to damage one or more of the banknote processing components inside the ATM. For example, if two or more banknotes are stapled together, the staples may jam a mechanism that processes the banknotes one at a time. As another example, a rubber band surrounding two or more banknotes may also jam the processing mechanism.

[0013] To detect these foreign objects, the system discussed below may apply pressure to a stack of banknotes. Any foreign object of appreciable thickness, such as a paper clip, staple, or rubber band, can present as an area of ​​relatively high pressure. For example, when a stack of banknotes is under pressure, a staple at the corner of a banknote can create an area of ​​relatively high stress at the corner of the stack.

[0014] In some examples, an ATM may use an array of pressure sensors such as piezoresistive sensors to detect the presence of foreign objects such as staples, paper clips or rubber bands in a stack ...

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PUM

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Abstract

An automated teller machine can use an array of pressure sensors, such as piezo-resistive sensors, to detect the presence of foreign objects, such as staples, paper clips, or rubber bands, in a stackof banknotes. A user can insert a stack of banknotes into an automated teller machine. A pair of opposing clamping surfaces can apply pressure to the stack of banknotes. An array of pressure sensors can sense non-uniformities in pressure over the area of the array. If circuitry coupled to the pressures sensors senses a presence of a high pressure area in the surface area of the banknotes, then thecircuitry can generate a signal indicating that one or more foreign objects has been detected. The automated teller machine can then prompt the user to remove the stack of banknotes and remove the foreign object from the stack of banknotes.

Description

technical field [0001] The present disclosure relates to detecting the presence of one or more foreign objects in a stack of banknotes. Background technique [0002] Foreign objects such as staples, paper clips, or rubber bands have the potential to damage one or more of the bill processing elements inside the ATM. Efforts are ongoing to improve the detection of these foreign objects so that the ATM can prompt the user to remove the foreign object. Contents of the invention [0003] In a first example, a system may include: a housing having a port sized and shaped to receive a stack of banknotes; a pair of opposing gripping surfaces positioned inside the housing and configured to controllably apply pressure to the stack of banknotes; an array of pressure sensors positioned on at least one of the pair of opposing gripping surfaces and configured to measure pressure exerted on a surface area of ​​the stack of banknotes; and positioned in the housing A circuit coupled to th...

Claims

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Application Information

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IPC IPC(8): G07D11/22
CPCG01L1/2293B65H2701/1912B65H7/06G01L1/18G07D7/189G07D7/187B65H2515/34B65H2511/521B65H2220/01B65H2220/03G01V9/00G07D7/023G07D7/026
Inventor 菲利普·凯斯·施塔福亚历山大·斯图尔特·麦克唐纳德
Owner NCR CORP
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