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Calibration of currency validators

A currency and calibration data technology, applied in the field of calibration of currency verification devices, can solve problems such as inaccurate classification and poor reliability

Inactive Publication Date: 2007-04-11
MICRO ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the problem with this technique is that the classification may be inaccurate, and therefore, for recalibration, unless special measurements are used to prevent the above from happening, it may lead to poor reliability

Method used

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  • Calibration of currency validators
  • Calibration of currency validators
  • Calibration of currency validators

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Experimental program
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Embodiment Construction

[0024] A coin validating device will first be described which is calibrated using the techniques of the present invention.

[0025] Referring to Figure 1, the coin validating device 2 includes a validating unit 4 which includes an inclined surface 6 along which coins, such as shown at 8, roll down. When the coin moves down the slope 6, it passes through three sensors 10, 12 and 14 in succession. The outputs of these sensors are sent to an interface circuit 16 to generate digital values ​​which are read by a processor 18 . Processor 18 determines whether the coin is valid, and if so, determines the face value of the coin. In response to this determination, the accept / reject gate 20 is operated to allow the coin to be accepted or left in its original state to move the coin to the reject channel 22 . If the coin is accepted, it is moved through an acceptance lane 24 to the coin storage area 26 . Various portals may be provided in the storage area 26 to allow coins of different...

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PUM

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Abstract

Articles belonging to known calibration classes are fed, in any sequence, to a currency acceptor in order to derive measurements which are used for calibration purposes. The calibration articles are classified, preferably by normalising a number of the measurements using a further measurement as a normalisation factor, and then calculating a Mahalanobis distance using the normalised measurements. The measurements are prevented from being used for calibration purposes if an integrity check suggests that they are unreliable.

Description

[0001] This application is a divisional application of the following application filed on December 28, 2002: the application number is 02161132.7; the title of the invention is "calibration of currency verification device". technical field [0002] The present invention relates to the calibration of currency verification devices. It can be applied to banknote verification devices and coin verification devices, as well as initial calibration of verification devices in the manufacturer's factory and recalibration of verification devices in the field of use. Background technique [0003] It is well known that money accepting or validating devices require calibration to account for the nuances in sensor response to money items. A common technique for calibration (see eg patent GB-A-1 452 740) involves measuring items of money, storing data relating to these measurements (eg upper and lower limits), and then determining whether the item's measurements correspond to the stored Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G07D5/00G07D7/00G01N27/72
CPCG07D2205/0012G07D7/00G07D5/00G07D5/08
Inventor K·L·金
Owner MICRO ELECTRONICS INC