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A banknote thickness detection device and calibration method thereof

A technology of thickness detection and calibration method, which is applied to the authenticity inspection of banknotes, handling coins or valuable banknotes, instruments, etc., and can solve the problems of the influence of the thickness of banknotes, its inapplicability, and the influence of running speed

Inactive Publication Date: 2017-12-01
NDT SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. The pressure applied to the two pressure rollers that squeeze each other has an impact on the thickness of the detected banknotes, and it is not easy to adjust during the detection process
[0004] 2. When banknotes pass between the two pressure rollers, the running speed is affected. Such a detection device is not suitable for devices that require banknotes to run at high speed

Method used

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  • A banknote thickness detection device and calibration method thereof
  • A banknote thickness detection device and calibration method thereof
  • A banknote thickness detection device and calibration method thereof

Examples

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Embodiment Construction

[0035] The technical solutions of the present invention will be further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0036] Ultrasonic thickness detection device in the present embodiment is installed in the banknote inlet place of the circulating core banknote checking module of ATM machine, as figure 1 As shown, the ultrasonic thickness detection device includes an ultrasonic thickness detection module 1, an analog-to-digital conversion module 2, an EEPROM module 3, a programmable gate array 4, and a main processing module 5; the ultrasonic thickness detection module 1 is as figure 2 , image 3Shown comprises ultrasonic transmitting tube 11, ultrasonic receiving tube 12, drive module, sampling module; The ultrasonic receiving tube 12 is arranged in a "line" shape and is installed on a PCB board 13 to emit column-shaped longitudinal ultrasonic waves; similarly, the ultrasonic receiving tube 12 is formed by a plurality...

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Abstract

The invention discloses a banknote thickness detection device and a calibration method thereof. The banknote thickness detecting device is installed at the banknote inlet of the banknote checking module of the circulation core, and includes an ultrasonic sensor tube and its drive circuit, an analog-to-digital conversion module, an EEPROM module and a programmable gate array. The calibration method of the banknote thickness detection device includes the following steps: when the programmable gate array extracts banknotes one by one, there is no banknote, there is only one banknote, and the banknote is double-sheeted or stuck with tape, the data of each channel sensor is used to calculate the thickness of the current tape, Compare the thickness of the tape or resheet with the standard thickness value to judge whether the thickness detection requirements have been met, thus completing a calibration. The invention is easy to operate, can help effectively debug the thickness detection module, identify the quality of the sensor, and at the same time perform initialization processing on the banknote thickness detection device.

Description

technical field [0001] The invention relates to the field of automatic teller machines, in particular to a banknote thickness detection device in an automatic teller machine and a method for determining a detection threshold. Background technique [0002] Banknotes are prone to wear and tear during the circulation of people's daily activities. People generally stick the damaged banknotes with adhesive tape and continue to use them. The financial sector must accurately and effectively distinguish the tape-taped banknotes or double-sheeted banknotes when processing banknotes. When distinguishing banknotes with adhesive tape or double-sheeted banknotes, it is necessary to install a banknote thickness detection device in the banknote running channel during the high-speed running of the banknotes. The banknote thickness detection device can detect the thickness of banknotes running at high speed. Then judge whether the banknote is a banknote with an adhesive tape or a double she...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G07D7/08G07D7/164
Inventor 蒋菲杨琼柱李翔
Owner NDT SCI & TECH
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