CN1737817A - Bank note safety line magnetic code recognition method - Google Patents
Bank note safety line magnetic code recognition method Download PDFInfo
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- CN1737817A CN1737817A CN 200510094286 CN200510094286A CN1737817A CN 1737817 A CN1737817 A CN 1737817A CN 200510094286 CN200510094286 CN 200510094286 CN 200510094286 A CN200510094286 A CN 200510094286A CN 1737817 A CN1737817 A CN 1737817A
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- magnetic
- bank note
- signal
- magnetic code
- safety line
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Abstract
This invention relates to one cash identification method on magnetic code, which is characterized by the following: the cash with magnetic code safety generates one series of faint magnetic signals through magnetic sensors that are amplified with its peak at testable signal voltage; the high speed AD converter is into digital signal in single machine to process the series signals to find out cash accurate magnetic codes.
Description
Technical field
What bank note safety line magnetic code recognition method of the present invention related to is a kind of recognition methods of bank note of safety line of encoding to being magnetic, and is applicable to that various paper money counters, cleaning-sorting machine, application bank note carry out automatic ticketing, the business machine of selling goods and deposits, withdraws money equipment automatically.
Background technology
Present bank note detection can only detect safety line magnetic and have or not, and can't judge magnetic code, can't collect the inner relevant face amount feature of bank note, relevant specific information feature, can not effectively utilize the identification of bank note safety line internal information forge or true or paper money, face amount and magnetic special distribution feature, the development of existing coinage technology, make safety line magnetic code become increasingly complex, prior art can't adapt to the requirement that bank note is detected.
Summary of the invention
The present invention seeks to provides a kind of bank note safety line magnetic code recognition method at above-mentioned weak point, adopt magnetic sensor, signal amplifier, change minute differences by magnetic in the high speed signal treatment technology identification safety line, multiple bank note is effectively differentiated to reach.
Bank note safety line magnetic code recognition method takes following scheme to realize: the bank note of carrying magnetic coding safety line produces a series of faint magnetic signals during at the volley by magnetic sensor, faint magnetic signal its signal peak after signal amplifier amplifies of this series reaches the signal voltage that can detect, converting digital signal to by high-speed A/D converter deposits in the single-chip microcomputer, single-chip microcomputer carries out analyzing and processing to the series of signals that deposits in, find out the correct magnetic code of this bank note, judge the magnetic properties of this bank note according to the magnetic code of finding out, and then determine the signal characteristic of this bank note according to the magnetic properties of this bank note, Currency Type, value of money.
Single-chip data signal analysis and processing flow process:
Single-chip microcomputer image data signal, bank note in the motion is through magnetic sensor, produce a series of magnetic signals, single-chip microcomputer carries out high speed to this signal, high density, sampling with high precision, and sampled result deposited in the storer, then the data that collect are carried out analyzing and processing one by one: the feature of at first finding out magnetic code, find out the numeral " 1 " in the coding one by one, " 11 ", " 111 " and digital " 0 ", " 00 ", " 000 ", magnetic code with various known values of money mates then, thereby find the magnetic code of this bank note, for judging the signal characteristic of this bank note, Currency Type, value of money provides foundation.
The characteristics of bank note safety line magnetic code recognition method: the inventive method is reasonable in design, be applicable to that various countries have the bank note discriminating Currency Type and the value of money of magnetic code safety line, the method reliability height, accurately, discriminating speed is fast, can be widely used in various paper money counters, cleaning-sorting machine, application bank note and carry out automatic ticketing, the business machine of selling goods and deposit, withdraw money equipment automatically.
Description of drawings
The invention will be further described below with reference to accompanying drawing.
Fig. 1 is a safety line magnetic code recognition method block diagram of the present invention.
Fig. 2 is a single-chip data signal analysis and processing process flow diagram of the present invention.
Concrete real mode
With reference to accompanying drawing 1,2, bank note safety line magnetic code recognition method: the bank note of carrying magnetic coding safety line produces a series of faint magnetic signals during at the volley by the paper money counter magnetic sensor, faint magnetic signal its signal peak after signal amplifier amplifies of this series reaches the signal voltage that can detect, the signal voltage that can detect is 1～5V, converting digital signal to by high-speed A/D converter deposits in the single-chip microcomputer, single-chip microcomputer carries out analyzing and processing to the series of signals that deposits in, find out the correct magnetic code of this bank note, judge the magnetic properties of this bank note according to the magnetic code of finding out, and then determine the signal characteristic of this bank note according to the magnetic properties of this bank note, Currency Type, value of money.
Single-chip microcomputer adopts the DSPIC30F series monolithic.High-speed A/D converter speed 〉=100kb/s.The magnetic detector width valid window width≤1.5mm of magnetic sensor.Magnetic sensor is highly sensitive, and the magnetic material that it adopts must be the little material of remanent magnetism.
With reference to accompanying drawing 2, the single-chip data signal analysis and processing flow process of bank note safety line magnetic code recognition method:
Single-chip microcomputer image data signal, bank note in the motion is through magnetic sensor, produce a series of magnetic signals, single-chip microcomputer carries out high speed to this signal, high density, sampling with high precision, and sampled result deposited in the storer, then the data that collect are carried out analyzing and processing one by one: the feature of at first finding out magnetic code, find out the numeral " 1 " in the coding one by one, " 11 ", " 111 " and digital " 0 ", " 00 ", " 000 ", magnetic code with various known values of money mates then, thereby find the magnetic code of this bank note, for judging the signal characteristic of this bank note, Currency Type, value of money provides foundation.
Claims (4)
1, a kind of bank note safety line magnetic code recognition method, the bank note that it is characterized in that carrying magnetic coding safety line produces a series of faint magnetic signals during at the volley by magnetic sensor, faint magnetic signal its signal peak after signal amplifier amplifies of this series reaches the signal voltage that can detect, converting digital signal to by high-speed A/D converter deposits in the single-chip microcomputer, single-chip microcomputer carries out analyzing and processing to the series of signals that deposits in, find out the correct magnetic code of this bank note, judge the magnetic properties of this bank note according to the magnetic code of finding out, and then determine the signal characteristic of this bank note according to the magnetic properties of this bank note, Currency Type, value of money.
2, bank note safety line magnetic code recognition method according to claim 1, it is characterized in that single-chip microcomputer image data signal, bank note in the motion is through magnetic sensor, produce a series of magnetic signals, single-chip microcomputer carries out high speed to this signal, high density, sampling with high precision, and sampled result deposited in the storer, then the data that collect are carried out analyzing and processing one by one: the feature of at first finding out magnetic code, find out the numeral " 1 " in the coding one by one, " 11 ", " 111 " and digital " 0 ", " 00 ", " 000 ", magnetic code with various known values of money mates then, thereby find the magnetic code of this bank note, for judging the signal characteristic of this bank note, Currency Type, value of money provides foundation.
3, bank note safety line magnetic code recognition method according to claim 1 is characterized in that high-speed A/D converter speed 〉=100kb/s.
4, bank note safety line magnetic code recognition method according to claim 1 is characterized in that the magnetic detector valid window width≤1.5mm of magnetic sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510094286 CN1737817A (en) | 2005-09-09 | 2005-09-09 | Bank note safety line magnetic code recognition method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510094286 CN1737817A (en) | 2005-09-09 | 2005-09-09 | Bank note safety line magnetic code recognition method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1737817A true CN1737817A (en) | 2006-02-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510094286 Pending CN1737817A (en) | 2005-09-09 | 2005-09-09 | Bank note safety line magnetic code recognition method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105160756A (en) * | 2015-08-18 | 2015-12-16 | 深圳怡化电脑股份有限公司 | Paper money facing direction recognition method and device |
| CN105574981A (en) * | 2015-12-10 | 2016-05-11 | 武汉大学 | RMB banknote denomination identification method based on safety line magnetic information |
| CN105809811A (en) * | 2014-12-31 | 2016-07-27 | 聚龙股份有限公司 | Safety line detection method in paper currency processing |
| CN110706398A (en) * | 2018-06-22 | 2020-01-17 | 厦门临泰微科技有限公司 | Magnetic signal identification circuit module compatible with world currency (paper money) |
-
2005
- 2005-09-09 CN CN 200510094286 patent/CN1737817A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105809811A (en) * | 2014-12-31 | 2016-07-27 | 聚龙股份有限公司 | Safety line detection method in paper currency processing |
| CN105160756A (en) * | 2015-08-18 | 2015-12-16 | 深圳怡化电脑股份有限公司 | Paper money facing direction recognition method and device |
| CN105574981A (en) * | 2015-12-10 | 2016-05-11 | 武汉大学 | RMB banknote denomination identification method based on safety line magnetic information |
| CN105574981B (en) * | 2015-12-10 | 2018-12-14 | 武汉大学 | A kind of rmb paper currency denomination identifying method based on safety line magnetic information |
| CN110706398A (en) * | 2018-06-22 | 2020-01-17 | 厦门临泰微科技有限公司 | Magnetic signal identification circuit module compatible with world currency (paper money) |
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