CN202995874U

CN202995874U - Detection device of incomplete paper money

Info

Publication number: CN202995874U
Application number: CN2012207459109U
Authority: CN
Inventors: 李敏; 沈为民; 黄杰; 朱明凌
Original assignee: China Jiliang University
Current assignee: China Jiliang University
Priority date: 2012-12-27
Filing date: 2012-12-27
Publication date: 2013-06-12
Anticipated expiration: 2022-12-27

Abstract

The utility model discloses a detection device of incomplete paper money. The device comprises a mechanical transmission portion and a detection display portion. The mechanical transmission portion comprises a base, a paper money inlet, a paper money outlet, a driving wheel drive, driving wheels, and a conveyor belt. The detection display portion comprises a CCD, an A/D converter, a one-chip microcomputer, and a display screen. A piece of to-be-tested paper money enters the device from the paper money inlet. The conveyor belt transmits the to-be-tested paper money, and the CCD above the conveyor belt acquires image information of the to-be-tested paper money. The A/D converter converts analog signals to digital signals, and the signals are stored in the one-chip microcomputer. The one-chip microcomputer calculates to obtain area of the to-be-tested paper money by a calculation algorithm based on area of the one-chip microcomputer, compares the area with stored standard paper money data, and determines incomplete levels of the to-be-tested paper money. Finally, the incomplete levels are displayed by the display screen. The detection device is simple in structure, fast in operation speed, and can display incomplete levels of the paper money. The detection device is suitable to be used in conversion of incomplete paper money in banks.

Description

A kind of pick-up unit of incomplete bank note

Technical field

The utility model relates to a kind of note detection device, relates in particular to a kind of pick-up unit of incomplete bank note.

Background technology

Bank note plays an important role in social and economic activities as a kind of means of circulation.Accurately the stained situation of detection bank note has larger impact to the normal circulation of bank note.In the incomplete stained Renminbi exchange way of People's Bank of China, clear the standard that bank note is in full, half amount is exchanged, wherein can distinguish denomination, the nominal value residue is more than 3/4ths (containing 3/4ths), the incompleteness that its pattern, word can in statu quo connect, stained Renminbi, financial institution should fully exchange by former denomination to the possessor; Can distinguish denomination, nominal value remained for 1/2nd (containing 1/2nd) to below 3/4ths, the incompleteness that its pattern, word can in statu quo connect, stained Renminbi, and financial institution should be to possessor's half exchange by former denomination; Bank note is cross shape and lacks 1/4th, by half exchange of former denomination.And at present, the detection of bank note mostly is the true and false and detects, and especially the evaluation for the bank note damaged degree is the observation of leaning on human eye mostly, affected by subjective factor, is difficult to determine incomplete grade.

Summary of the invention

In order to solve above-mentioned prior art problem, the purpose of this utility model is to provide a kind of pick-up unit of incomplete bank note, is characterized in simple in structure, precision is high, can directly show incomplete grade.

The technical scheme that the utility model adopts is: a kind of pick-up unit of incomplete bank note, comprise mechanical transmission part and detection display part, and mechanical transmission partly comprises base, back-note feeder, bank note outlet, power wheel driving, power wheel, travelling belt; Detection display partly comprises CCD, A/D converter, single-chip microcomputer, display screen; Mechanical transmission part and detection display part all are fixed on base, and described power wheel is placed in parallel between back-note feeder and bank note outlet, are driven by power wheel and control; Described travelling belt is placed on power wheel between back-note feeder and bank note outlet; Detection display partly is positioned at above the mechanical transmission part, and described CCD is positioned at directly over travelling belt, and CCD connects A/D converter, and A/D converter connects single-chip microcomputer, and single-chip microcomputer connects display screen.

Described back-note feeder is identical with the bank note exit width, is 8cm-10cm.

Distance range between described power wheel is 16cm-31cm, and the width of travelling belt and back-note feeder, bank note exit width are identical.

Described CCD is dot matrix CCD, can carry out information acquisition to tested bank note simultaneously horizontal and vertical.

Described single-chip microcomputer is the ATMEGA8 single-chip microcomputer in AVR single-chip microcomputer series, and this single-chip microcomputer has adopted advanced RICS Reduced Instruction Set Computer Architecture, has enough fast travelling speed, can reach 1MIPS/MHz, is 10 times of common CISC single-chip microcomputer.

Described display screen is LCDs.

The beneficial effects of the utility model are:

1. adopt dot matrix CCD, tested bank note information is accurately gathered;

2. employing high-speed microprocessor, fast operation;

3. employing liquid crystal display, by the single-chip microcomputer computing, the incomplete grade of direct control display.

Description of drawings

Below in conjunction with drawings and Examples, the utility model is further illustrated.

Fig. 1 is apparatus structure schematic diagram of the present utility model;

Fig. 2 is workflow diagram of the present utility model;

1 is power switch; 2 is power wheel; 3 is travelling belt; 4 is CCD; 5 is display screen; 6 is base; 7 is back-note feeder; 8 are the bank note outlet.

Embodiment

In Fig. 1, a kind of pick-up unit of incomplete bank note comprises mechanical transmission part and detection display part, and mechanical transmission partly comprises base 6, back-note feeder 7, bank note outlet 8, power wheel driving, power wheel 2, travelling belt 3; Detection display partly comprises CCD4, A/D converter, single-chip microcomputer, display screen 5; Mechanical transmission part and detection display part all are fixed on base 6, and described power wheel 2 is placed in parallel between back-note feeder 7 and bank note outlet 8, are driven by power wheel and control; Described travelling belt 3 is placed on power wheel 2 between back-note feeder 7 and bank note outlet 8; Detection display partly is positioned at above the mechanical transmission part, and described CCD4 is positioned at directly over travelling belt 3, and CCD4 connects A/D converter, and A/D converter connects single-chip microcomputer, and single-chip microcomputer connects display screen 5.

In Fig. 2, a kind of pick-up unit workflow of incomplete bank note, tested bank note enters from back-note feeder 7, the travelling belt 3 tested bank note of transmission, simultaneously, travelling belt 3 top CCD4 gather tested banknote image information, and are digital signal by A/D converter with analog signal conversion, and are stored on single-chip microcomputer; Single-chip microcomputer calculates the area of tested bank note by SCM Based area computational algorithm, and compares with the standard bank note data of having preserved, and the incomplete grade of the tested bank note of judgement shows by display screen 5 at last.Detect completely, tested bank note spreads out of from bank note outlet 8.

Described incomplete grade is based on the regulation in the incomplete stained Renminbi exchange way of People's Bank of China, the bank note of nominal value residue more than 3/4ths (containing 3/4ths) is decided to be a grade, nominal value residue 1/2nd (containing 1/2nd) to the bank note below 3/4ths are decided to be two grades, and the bank note of face ticket residue below 1/2nd is decided to be three grades.

Described SCM Based area computational algorithm is based on the method that the triangle area Iterative calculation method is communicated with arbitrarily area of a polygon, the area that this method is applicable to Contiguous graphics calculates, realize quite simple with assembly language, be the simple and practical area measurement approximate data of a kind of measure system based on MCU, its ultimate principle is:

The image that collects is ticked the profile of image with the line segment that multistage connects from beginning to end along object edge, form the polygon that an area approximation equals the target image area, the area of image can draw with the triangle split plot design: with the upper left corner as true origin, vertical direction is X-axis, horizontal direction is Y-axis, all pixels of image all can drop on first quartile, and the leg-of-mutton area that any two points in quadrant and true origin are determined can be released by geometrical principle.In addition, stipulate leg-of-mutton direction, take true origin as axle, set out by true origin and point to triangle and determine that more first the ray on summit is datum line, counterclockwise rotate around axle the angle that is not more than circular constant as datum line and just can arrive another summit that triangle is determined after a while, stipulate that leg-of-mutton direction is for counterclockwise; Otherwise stipulate that leg-of-mutton direction is for clockwise.Equidirectional triangle area addition deducts reciprocal leg-of-mutton area and can obtain polygonal area.

Claims

1. the pick-up unit of an incomplete bank note, comprise mechanical transmission part and detection display part, and it is characterized in that: mechanical transmission partly comprises base, back-note feeder, bank note outlet, power wheel driving, power wheel, travelling belt; Detection display partly comprises CCD, A/D converter, single-chip microcomputer, display screen; Mechanical transmission part and detection display part all are fixed on base, and described power wheel is placed in parallel between back-note feeder and bank note outlet, are driven by power wheel and control; Described travelling belt is placed on power wheel between back-note feeder and bank note outlet; Detection display partly is positioned at above the mechanical transmission part, and described CCD is positioned at directly over travelling belt, and CCD connects A/D converter, and A/D converter connects single-chip microcomputer, and single-chip microcomputer connects display screen.

2. the pick-up unit of a kind of incomplete bank note according to claim 1, it is characterized in that: described back-note feeder is identical with the bank note exit width, is 8cm-10cm.

3. the pick-up unit of a kind of incomplete bank note according to claim 1, it is characterized in that: the distance range between described power wheel is 16cm-31cm, the width of travelling belt and back-note feeder, bank note exit width are identical.

4. the pick-up unit of a kind of incomplete bank note according to claim 1, it is characterized in that: described CCD is dot matrix CCD.

5. the pick-up unit of a kind of incomplete bank note according to claim 1, it is characterized in that: described single-chip microcomputer is the ATMEGA8 single-chip microcomputer in AVR single-chip microcomputer series.

6. the pick-up unit of a kind of incomplete bank note according to claim 1, it is characterized in that: described display screen is LCDs.