CN103426228B - A kind of Coin recognition circuit - Google Patents
A kind of Coin recognition circuit Download PDFInfo
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- CN103426228B CN103426228B CN201210148721.8A CN201210148721A CN103426228B CN 103426228 B CN103426228 B CN 103426228B CN 201210148721 A CN201210148721 A CN 201210148721A CN 103426228 B CN103426228 B CN 103426228B
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- acquisition circuit
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Abstract
The present invention relates to a kind of Coin recognition circuit, comprising: oscillatory circuit, oscillatory circuit is for exporting oscillation mode analog signal; Acquisition Circuit, Acquisition Circuit comprises the first telefault, the 2nd telefault, and the first telefault is electrically connected with described oscillatory circuit, and the 2nd telefault is coupled with described first telefault; Processing module, processing module is electrically connected with described 2nd telefault, and processing module comprises storer, and processing module judges the coin true and false by the signal amplitude of detection Acquisition Circuit. The Coin recognition circuit that the technical scheme of the present invention provides, by Acquisition Circuit, the information of coin to be detected is gathered, and the data or female coin information with storer contrast, one-piece construction is simple, recognition efficiency height and environmental requirement is low, 2nd telefault and the 3rd telefault adopt bar shaped coil design to make Coin recognition circuit can distinguish the size of coin, material, pattern more efficiently, and then differentiate the true and false of coin.
Description
Technical field
The present invention relates to a kind of Coin recognition circuit.
Background technology
Along with progress and the development of society, what got more and more in commerce and service sectors uses coin-feed machine, the bigger subway of flow of the people, public transport and vending machine provide coin-feed machine, not only greatly improves working efficiency, the great convenience simultaneously also brought. but popularizing along with coin-feed machine, also bring opportunity to lawless person, result in counterfeit money phenomenon and be on the rise, thus the coin truth identification of coin-feed machine is required more and more higher. existing Coin identifying apparatus generally includes mechanical type, piezoelectric type, condenser type is several, but it is big that mechanical type Coin identifying apparatus has volume, complex structure, the feature that cost performance is not high, but and the counterfeit money that the identical material of None-identified geometrical shape is different, piezoelectric type Coin identifying apparatus identification speed is slower, there is discreteness in the parameter of electronic component, need to finely tune in use, and temperature variation is bigger on the impact of piezoelectric type Coin identifying apparatus, recognition efficiency is not high, condenser type Coin identifying apparatus is also owing to there is discreteness in the parameter of electronic component, and envrionment temperature, humidity etc. are also bigger on the impact of condenser type Coin identifying apparatus, thus also less use.
Summary of the invention
The primary and foremost purpose of the present invention is to provide that a kind of structure is simple, recognition efficiency height and the Coin recognition circuit that environmental requirement is low, and for achieving the above object, the concrete scheme of the present invention is as follows:
A kind of Coin recognition circuit, comprises oscillatory circuit, and described oscillatory circuit is for exporting oscillation mode analog signal; Acquisition Circuit, described Acquisition Circuit comprises the first telefault, the 2nd telefault, described first telefault is electrically connected with described oscillatory circuit, described 2nd telefault is coupled with described first telefault, passes through coin to be measured in the middle of described first telefault and described 2nd telefault; Processing module, described processing module is electrically connected with described 2nd telefault, and described processing module comprises storer, and described processing module judges the coin true and false by the signal amplitude of the described Acquisition Circuit of detection.
Preferably, described Acquisition Circuit also comprises the 3rd telefault, described 3rd telefault is electrically connected with described oscillatory circuit, and described 2nd telefault is coupled with described 3rd telefault, is provided with female coin between described 2nd telefault and described 3rd telefault; Described processing module is electrically connected with described 2nd telefault, and described processing module judges the coin true and false by the signal amplitude of the described Acquisition Circuit of detection.
Preferably, described first telefault, the 2nd telefault and the 3rd telefault are bar shaped coil.
The Coin recognition circuit that the technical scheme of the present invention provides, by Acquisition Circuit, the information of coin to be detected is gathered, and the data or female coin information with storer contrast, one-piece construction is simple, recognition efficiency height and environmental requirement is low, 2nd telefault and the 3rd telefault adopt bar shaped coil design to make Coin recognition circuit can distinguish the size of coin, material, pattern more efficiently, and then differentiate the true and false of coin.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the part of the application, does not form inappropriate limitation of the present invention, in the accompanying drawings:
Fig. 1 is the embodiment of the present invention 1 structure block diagram;
Fig. 2 is the embodiment of the present invention 2 structure block diagram;
Fig. 3 is the embodiment of the present invention 3 structure block diagram;
Fig. 4 is embodiment of the present invention bar shaped coil current vortex sensor schematic diagram.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the present invention being described in detail, illustrative examples and explanation in this present invention are used for explaining the present invention, but not as a limitation of the invention.
Embodiment 1:
As shown in Figure 1, a kind of Coin recognition circuit, comprising:
Oscillatory circuit 1, described oscillatory circuit 1 is for exporting oscillation mode analog signal;
Acquisition Circuit, described Acquisition Circuit comprises the first telefault 2, the 2nd telefault 3, and described first telefault 2 is electrically connected with described oscillatory circuit 1, and described 2nd telefault 3 is coupled with described first telefault 2;
Processing module 4, described processing module 4 is electrically connected with described 2nd telefault 3, and described processing module 4 comprises storer 41, and described processing module 4 judges the coin true and false by the signal amplitude of the described Acquisition Circuit of detection.
Between Acquisition Circuit and processing module 4, it is also possible to point frequency circuit 5, a signal shaping circuit 6 are set;
Processing module 4 can also comprise the first infrared tube 42, the 2nd infrared tube 43 form outer red optical detecting module and hummer 44, magnetic valve 45, display module 46.
As shown in Figure 4, as the improvement of above-described embodiment scheme, described first telefault 2, the 2nd telefault 3 are bar shaped coil. When the first telefault 2, the 2nd telefault 3 adopt circular configuration, generation be uneven magnetic field. When same material or pattern, different big minor coin is through uneven magnetic field, and the numerical value of sensor can not change. Therefore can only be judged material or the image of coin by this current vortex sensor, the size of coin must be judged. Judge that the size of coin can only adopt other two kinds of methods: 1. detect coin-size by one pair of correlation electric eye. 2. by structural spacing, the size of coin is judged. And the error of the detection coin-size of these two kinds of methods is all very big, generally there is 1��2mm error. Adopting bar shaped coil current vortex sensor to identify the size of coin, material, pattern, the magnetic field of the coil of coin process is all uniform magnetic field simultaneously.
By above-described embodiment scheme, when coin to be detected passes through in the middle of the first telefault 2 and the 2nd telefault 3, cause the change of frequency of HF oscillation circuit 1, processing module 4 is contrasted by the respective value of the sample coin stored in the frequency of collection HF oscillation circuit 1 and storer 41, and then judges the true and false of coin:
1. coin-freed arrangement is operationally, in advance by a series of coin model to be learned, obtains the test data of these coins under different test frequency, and stored in exterior storage device 41, as reference data;
2. after coin to be measured enters coin road, first by the first telefault 2 and the 2nd telefault 3, first infrared tube 42 sends signal to processing module 4 after coin being detected, processing module 4 controls vibrator instantaneous generation successively three different detection frequencies on the first telefault 2 and the 2nd telefault 3 and is detected by coin to be measured, then the data recorded are fed back to processing module 4, reference data in these data and exterior storage device 41 is contrasted by processing module 4, to determine the true and false of coin to be measured; If being (1) defined as genuine note, processing module 4 immediately opens solenoid valve 45 let pass; If being (2) defined as counterfeit money, then magnetic valve 45 is not opened, and from moving back, coin mouth exits counterfeit money;
3. the 2nd infrared tube 43 detects that coin to be measured is just shown by Shou Bi road and sends corresponding value of money signal, if coin to be measured is not detected as the correct signal of genuine note by the first telefault 2 and the 2nd telefault 3 and is detected by the 2nd infrared tube 43 this coin is described by illegal operation by magnetic valve 45, or so-called fishing action, at this moment processing module 4 makes hummer 44 report to the police 1 minute, and do not send signal, do not accept any coin to be measured in 1 minute simultaneously.
Embodiment 2:
As shown in Figure 2, a kind of Coin recognition circuit, comprises
Oscillatory circuit 1, described oscillatory circuit 1 is for exporting oscillation mode analog signal;
Acquisition Circuit, described Acquisition Circuit comprises the first telefault 2, the 2nd telefault 3, and described first telefault 2 is electrically connected with described oscillatory circuit 1, and described 2nd telefault 3 is coupled with described first telefault 2; Described Acquisition Circuit also comprises the 3rd telefault 7, described 3rd telefault 7 is electrically connected with described oscillatory circuit 1, described 2nd telefault 3 is coupled with described 3rd telefault 7, is provided with female coin between described 2nd telefault 3 and described 3rd telefault 7;
Processing module 4, described processing module 4 is electrically connected with described 2nd telefault 3, and described processing module 4 judges the coin true and false by the signal amplitude of the described Acquisition Circuit of detection.
Between Acquisition Circuit and processing module 4, it is also possible to arrange and amplify circuit 8, signal shaping circuit 6;
Processing module 4 can also comprise the first infrared tube 42, the outer red optical detecting module of the 2nd infrared tube 43 composition, magnetic valve 45, display module 46.
As the improvement of above-described embodiment scheme, described first telefault 2, the 2nd telefault 3 and the 3rd telefault 7 are bar shaped coil. When the first telefault 2, the 2nd telefault 3 and the 3rd telefault 7 adopt circular configuration, generation be uneven magnetic field. When same material or pattern, different big minor coin is through uneven magnetic field, and the numerical value of sensor can not change. Therefore can only be judged material or the image of coin by this current vortex sensor, the size of coin must be judged. Judge that the size of coin can only adopt other two kinds of methods: 1. detect coin-size by one pair of correlation electric eye. 2. by structural spacing, the size of coin is judged. And the error of the detection coin-size of these two kinds of methods is all very big, generally there is 1��2mm error. Adopting bar shaped coil current vortex sensor to identify the size of coin, material, pattern, the magnetic field of the coil of coin process is all uniform magnetic field simultaneously.
By above-described embodiment scheme, during work, female coin has been pressed from both sides between 2nd telefault 3 and the 3rd telefault 7, coin to be detected passes through between the first telefault 2 and the 2nd telefault 3, when coin material to be detected is identical or different from female coin material, the signal amplitude that 2nd telefault 3 produces is close to zero or is certain numerical value, this signal subtraction device, signal shaping circuit 6 are delivered to processing module 4 after processing and are identified, by judging, this signal magnitude identifies that whether coin material is identical to processing module 4.
1, the high-frequency signal that oscillatory circuit 1 produces directly gives the 2nd telefault 3.
(1), when not pressing from both sides female coin when between the 2nd telefault 3 and the 3rd telefault 7, the signal that the first telefault 2 produces with the 3rd telefault 7 is equal.
(2) when having pressed from both sides female coin between the 2nd telefault 3 and the 3rd telefault 7:
1. identical when material and when size is different coin passes through from the uniform magnetic field between the first telefault 2 and the 2nd telefault 3, the signal produced on the first telefault 2 the 3rd telefault 7 coil is inequal.
2. when whether identical unlike material coin is whether great or small, it passes through from the uniform magnetic field between the first telefault 2 and the 2nd telefault 3, inequal with the signal produced on the 3rd telefault 7 at the first telefault 2.
3. when material is identical and coin that size is also identical from the uniform magnetic field between the first telefault 2 and the 2nd telefault 3 by time, equal with the signal of generation on the 3rd telefault 7 at the first telefault 2.
2, the signal warp let-off subtractor computing produced on the first telefault 2 and the 3rd telefault 7, then through signal shaping, finally send processing module 4 to process.
(1), when the first telefault 2 is equal with the signal on the 3rd telefault 7 coil, when electric eye judges do not have coin to drop into simultaneously, microprocessor is thought does not have coin to drop into.
(2), when the first telefault 2 is equal with the signal on the 3rd telefault 7, when electric eye judges have coin to drop into simultaneously, microprocessor thinks that the coin dropped into is genuine note.
(3) when the first telefault 2 is inequal with the signal on the 3rd telefault 7, electric eye judges have coin to drop into simultaneously, and microprocessor thinks that the coin dropped into is counterfeit money.
Embodiment 3:
Embodiment 3 overall technical architecture is identical with embodiment 2, as shown in Figure 3, institute's difference is: oscillatory circuit 1 is electrically connected with the 2nd telefault 3, first telefault 2 and the 3rd telefault 7 are coupled with the 2nd telefault 3 respectively, and the first telefault 2 and the 3rd telefault 7 are electrically connected with processing module 4 respectively.
As the improvement of above-described embodiment scheme, described first telefault 2, the 2nd telefault 3 and the 3rd telefault 7 are bar shaped coil. When the first telefault 2, the 2nd telefault 3 and the 3rd telefault 7 adopt circular configuration, generation be uneven magnetic field. When same material or pattern, different big minor coin is through uneven magnetic field, and the numerical value of sensor can not change. Therefore can only be judged material or the image of coin by this current vortex sensor, the size of coin must be judged. Judge that the size of coin can only adopt other two kinds of methods: 1. detect coin-size by one pair of correlation electric eye. 2. by structural spacing, the size of coin is judged. And the error of the detection coin-size of these two kinds of methods is all very big, generally there is 1��2mm error. Adopting bar shaped coil current vortex sensor to identify the size of coin, material, pattern, the magnetic field of the coil of coin process is all uniform magnetic field simultaneously.
Now Coin recognition circuit principle of work is similar to embodiment 2:
1, the high-frequency signal that oscillatory circuit 1 produces directly gives the 2nd telefault 3.
(1), when not pressing from both sides female coin when between the 2nd telefault 3 and the 3rd telefault 7, the signal that the first telefault 2 produces with the 3rd telefault 7 is equal.
(2) when having pressed from both sides female coin between the 2nd telefault 3 and the 3rd telefault 7:
1. identical when material and when size is different coin passes through from the uniform magnetic field between the first telefault 2 and the 2nd telefault 3, the signal produced on the first telefault 2 the 3rd telefault 7 coil is inequal.
2. when whether identical unlike material coin is whether great or small, it passes through from the uniform magnetic field between the first telefault 2 and the 2nd telefault 3, inequal with the signal produced on the 3rd telefault 7 at the first telefault 2.
3. when material is identical and coin that size is also identical from the uniform magnetic field between the first telefault 2 and the 2nd telefault 3 by time, equal with the signal of generation on the 3rd telefault 7 at the first telefault 2.
2, the signal warp let-off subtractor computing produced on the first telefault 2 and the 3rd telefault 7, then through signal shaping, finally send processing module 4 to process.
(1), when the first telefault 2 is equal with the signal on the 3rd telefault 7 coil, when electric eye judges do not have coin to drop into simultaneously, microprocessor is thought does not have coin to drop into.
(2), when the first telefault 2 is equal with the signal on the 3rd telefault 7, when electric eye judges have coin to drop into simultaneously, microprocessor thinks that the coin dropped into is genuine note.
(3) when the first telefault 2 is inequal with the signal on the 3rd telefault 7, electric eye judges have coin to drop into simultaneously, and microprocessor thinks that the coin dropped into is counterfeit money.
The technical scheme embodiment of the present invention provided above is described in detail, applying specific case herein the principle of the embodiment of the present invention and enforcement mode to have been set forth, the explanation of above embodiment is only applicable to help the principle understanding the embodiment of the present invention; Meanwhile, for one of ordinary skill in the art, according to the embodiment of the present invention, all will change in embodiment and range of application, in sum, this description should not be construed as limitation of the present invention.
Claims (1)
1. a Coin recognition circuit, it is characterised in that comprising:
Oscillatory circuit, described oscillatory circuit is for exporting oscillation mode analog signal;
Acquisition Circuit, described Acquisition Circuit comprises the first telefault, the 2nd telefault, described first telefault is electrically connected with described oscillatory circuit, described 2nd telefault is coupled with described first telefault, and the centre of described first telefault and described 2nd telefault is by coin to be measured;
Described Acquisition Circuit also comprises the 3rd telefault, and described 3rd telefault is electrically connected with described oscillatory circuit, and described 2nd telefault is coupled with described 3rd telefault, is provided with female coin between described 2nd telefault and described 3rd telefault;
Processing module, described processing module is electrically connected with described 2nd telefault, and described processing module comprises storer, and described processing module judges the coin true and false by the signal amplitude of the described Acquisition Circuit of detection;
Described first telefault, the 2nd telefault and the 3rd telefault are bar shaped coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210148721.8A CN103426228B (en) | 2012-05-14 | 2012-05-14 | A kind of Coin recognition circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210148721.8A CN103426228B (en) | 2012-05-14 | 2012-05-14 | A kind of Coin recognition circuit |
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| Publication Number | Publication Date |
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| CN103426228A CN103426228A (en) | 2013-12-04 |
| CN103426228B true CN103426228B (en) | 2016-06-01 |
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| CN201210148721.8A Active CN103426228B (en) | 2012-05-14 | 2012-05-14 | A kind of Coin recognition circuit |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1148224A (en) * | 1995-10-16 | 1997-04-23 | 阮志成 | Coin box mechanism and method for distinguishing coins |
| CN1153363A (en) * | 1995-04-25 | 1997-07-02 | 三洋电机株式会社 | Money discriminator |
| CN1512194A (en) * | 2002-12-26 | 2004-07-14 | 旭精工株式会社 | Coin sensor |
| CN201196806Y (en) * | 2008-03-28 | 2009-02-18 | 江苏金陵机械制造总厂 | Anti-counterfeit coin-recognition module of coin machine |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1031229C (en) * | 1991-12-23 | 1996-03-06 | 王红霞 | Testing and control method of magnetic coin and its device |
| GB9723223D0 (en) * | 1997-11-03 | 1998-01-07 | Coin Controls | Coin validator |
| JP4474563B2 (en) * | 2002-12-26 | 2010-06-09 | 旭精工株式会社 | Bimetal coin detection device |
-
2012
- 2012-05-14 CN CN201210148721.8A patent/CN103426228B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1153363A (en) * | 1995-04-25 | 1997-07-02 | 三洋电机株式会社 | Money discriminator |
| CN1148224A (en) * | 1995-10-16 | 1997-04-23 | 阮志成 | Coin box mechanism and method for distinguishing coins |
| CN1512194A (en) * | 2002-12-26 | 2004-07-14 | 旭精工株式会社 | Coin sensor |
| CN201196806Y (en) * | 2008-03-28 | 2009-02-18 | 江苏金陵机械制造总厂 | Anti-counterfeit coin-recognition module of coin machine |
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| CN103426228A (en) | 2013-12-04 |
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Address after: 511400 3rd floor, no.27-1, Shatu Road, Shawan Town, Panyu District, Guangzhou City, Guangdong Province Patentee after: Guangzhou Likang Electronic Technology Co.,Ltd. Address before: 511455 Room 201, No.1 Fuyong Road, Huangge Town, Nansha District, Guangzhou City, Guangdong Province Patentee before: GUANGZHOU LIKANG ELECTRONIC TECHNOLOGY Co.,Ltd. |
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