CN2765260Y - A safety line authenticator for paper money with capacitor type sensor - Google Patents
A safety line authenticator for paper money with capacitor type sensor Download PDFInfo
- Publication number
- CN2765260Y CN2765260Y CN 200520053839 CN200520053839U CN2765260Y CN 2765260 Y CN2765260 Y CN 2765260Y CN 200520053839 CN200520053839 CN 200520053839 CN 200520053839 U CN200520053839 U CN 200520053839U CN 2765260 Y CN2765260 Y CN 2765260Y
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- safety line
- circuit
- bank note
- type sensor
- identifying device
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Abstract
The utility model relates to a safety line counterfeit discriminating device with a capacitor type sensor for paper money, which comprises an oscillation circuit, a capacitor type pole board with pairs of emitting pole pieces and receiving pole pieces in cross distribution and a signal processing circuit. The high frequency waves generated by the oscillation circuit are conveyed in the capacitor type pole board. The high frequency waves are emitted through the emitting pole pieces on the pole board. When the safety line position of paper money contacts the pole pieces of the sensor and capacitor type pole board, the high frequency waves emitted by a high frequency wave emitting board can be reflected back to the capacitor type pole board by the safety line of the paper money. The receiving pole pieces on the capacitor type pole board can gain a changing and modulated sinusoidal wave electrical signal. The signal is processed with high-power amplification, impedance matching, whole wave rectification, filtering, impedance transformation, re-amplification, etc. through the signal processing circuit. The sinusoidal wave signal capable of being discriminated is conveyed out to a single chip computer for quantized analysis, and the safety line can be discriminated whether the safety line is real or counterfeit. The missing discrimination rate and the wrong discrimination rate of counterfeit paper money discriminating devices carrying out the discrimination of the materials and the manufacturing technologies of the safety lines can be further reduced.
Description
(1) technical field
The utility model relates to a kind of financial machine and tool, especially relates to a kind of device of differentiating forge or true or paper money.Enterprise, public institution and self-employed entrepreneur that the utility model is suitable for being engaged in the domestic and international bank of cash business and cash receipt and payment business is arranged are used to discern safety line material and manufacturing process on the various bank note.
(2) background technology
At present, the false distinguishing mode that generally adopts on point, the cash inspecting machine has: false distinguishing modes such as magnetic, infrared, fluorescence; Wherein magnetic false distinguishing principle of work is to adopt magnetic head to pick up the magnetic number at magnetic position on the genuine notes, and converts thereof into electric signal, through amplify and comparison process after differentiate; Infrared false distinguishing principle of work is to have adopted infrared sensor to pick up the light characteristic that infrared printing printing ink is shown in the specific region on the genuine notes under the infrared excitation of specific wavelength, and converts thereof into electric signal, through amplify and comparison process after differentiate; Fluorescence false distinguishing principle of work is that to adopt purple light that ultraviolet light sent to shine on the counterfeit money fluorescence reflection stronger, fluorescence reflects more weak this physical characteristics on the genuine notes and shine, pick up the reflected fluorescent light of counterfeit money, and convert thereof into electric signal, after amplification and comparison process, differentiate.Along with the raising of the manufacturing technology of counterfeit money, the fidelity of counterfeit money strengthened in recent years, adopted the leakage of the discriminating machine for fake RMB of above several false distinguishing modes to distinguish that rate and mistake distinguish that rate just progressively improves, and can not adapt to the needs of current identification counterfeit money fully.
(3) summary of the invention
The purpose of this utility model is: according to bank note the feature of anti-fake safety line is set generally, designs a kind of sensing device that can detect bank note safety line.
For achieving the above object, a kind of bank note safety line false-identifying device with capacitance type sensor of the utility model adopts following technical scheme: all imbedded the safety line of making matrix with the Polyurethane material at nearly all bank note in manufacture process, and special this operational characteristic of chemical bisque is arranged in its surface-coated, the utility model device will verify that it comprises to the material and the manufacturing process thereof of bank note safety line: oscillatory circuit, condenser type pole plate, signal processing circuit.Described condenser type pole plate comprises that high frequency waves emission pole piece and reflection wave receive pole piece.The high frequency waves that oscillatory circuit produces are sent into the condenser type pole plate, outwards launch high frequency waves by the emission pole piece on the pole plate; When the bank note safety line position contacts with the pole piece of sensor capacitance formula pole plate, the high frequency waves that the high frequency waves expelling plate is launched can be by the safety line reflected back condenser type pole plate of bank note, and a variation and modulated sinusoidal wave electric signal is obtained in the receiving pole sector-meeting on the condenser type pole plate.This signal is through high power amplification, impedance matching, full-wave rectification, filtering, impedance conversion and a series of processing such as amplification once more of signal processing circuit, export a sine wave signal at last, be connected with discriminating machine for fake RMB by interface, deliver to single-chip microcomputer and carry out quantitative analysis, just can identify the true and false of safety line.
Signal processing circuit comprises: the preamplifying circuit that prime signal amplification circuit and prime high input impedance match circuit are formed; The detection shaping circuit that full-wave rectifying circuit and high-frequency filter circuit are formed; The back level amplification output circuit that back level high input impedance match circuit and back level amplifying circuit are formed.
The special feature of the utility model device is: the emission pole piece of the condenser type pole plate of bank note safety line capacitance type sensor false-identifying device and reception pole piece dispose in pairs, and cross-distribution guarantees that the safety line of bank note contacts fully with pole piece on the condenser type pole plate.
In order further to improve the reliability of the utility model bank note safety line capacitance type sensor false-identifying device, described condenser type pole plate is positioned at a side of inspection paper money passage, over against the opposite side wall be provided with the bank note contact roller.Contact roller is installed is helped into paper money, can guarantee that again the pole piece on the condenser type pole plate reliably contacts with bank note.
Compared with prior art, the advantage of the utility model device has been to increase new technological means and has improved distinguishing ability to counterfeit money, and after discriminating machine for fake RMB had adopted the utility model device, its leakage distinguished that rate and mistake distinguish that rate can further reduce.
(4) description of drawings
The description of drawings of the bank note safety line false-identifying device of the utility model capacitance type sensor is as follows:
Fig. 1 is the functional-block diagram with bank note safety line false-identifying device of capacitance type sensor;
Fig. 2 is the pole piece distribution plan that has on the condenser type pole plate of bank note safety line false-identifying device of capacitance type sensor;
Fig. 3 is the reception pole piece line graph that has on the condenser type pole plate of bank note safety line false-identifying device of capacitance type sensor;
Fig. 4 is the liner plate distribution plan that has on the condenser type pole plate of bank note safety line false-identifying device of capacitance type sensor;
Fig. 5 be have capacitance type sensor the bank note safety line false-identifying device the condenser type pole plate and the structural representation of contact roller;
Fig. 6 is the electrical schematic diagram with bank note safety line false-identifying device of capacitance type sensor.
(5) embodiment
As shown in Figure 1, the bank note safety line false-identifying device that the utlity model has capacitance type sensor comprises: high-frequency oscillating circuits 1, have the condenser type pole plate 2 that high frequency waves emission pole piece and reflection wave receive pole piece, the preamplifying circuit 31 that prime signal amplification circuit and prime high input impedance match circuit are formed, the detection shaping circuit 32 that full-wave rectifying circuit and high-frequency filter circuit are formed, the back level amplification output circuit 33 that back level high input impedance match circuit and back level amplifying circuit are formed.
As shown in Figure 6, this bank note safety line false-identifying device power supply is+12VDC.Described oscillatory circuit 1 is made up of Sheffer stroke gate U2 and resistance R 4, R5, and it produces a frequency is the high frequency waves of 12V for the 2.5-3MHz amplitude, and these high frequency waves are sent into condenser type pole plate 2, outwards launch high frequency waves by the emission pole piece on the pole plate; Because the safety line of genuine notes is to make with the polyurethane material, and its surface-coated has special immersion coating, is equivalent to a utmost point of capacitor.When the bank note safety line position contacts with condenser type pole plate 2, the high frequency waves that the high frequency waves expelling plate is launched can be by the safety line reflected back condenser type pole plate 2 of bank note, a variation and modulated sinusoidal wave electric signal is obtained in reflection wave receiving pole sector-meeting on the condenser type pole plate 2, this signal is via operational amplifier U3, resistance R 6, R7, R8, R10, R11, R12 and capacitor C 6, C7, C8, after the amplifying circuit that C9 forms carries out high power amplification and impedance matching, be transferred to by Schottky commutation diode D1, D2, D3, D4, capacitor C 10, full-wave rectification and filtering circuit that resistance R 13 constitutes, after this obtain a sinusoidal wave envelope signal, again after the emitter follower that U4 constitutes carries out impedance conversion, deliver to by C11, R14, R9, R15, the benchmark that R16T and U5 constitute amplifies once more for the full pendulum volt operational amplifier of+6V, like this at the output terminal sine wave signal that can to obtain an amplitude be 0-12V.
The characteristics that the utlity model has the bank note safety line false-identifying device of capacitance type sensor are: the condenser type pole plate 2 of this false-identifying device is fixed on the upper wall or the lower wall of inspection paper money passage.The pole piece that adopts condenser type pole plate 2 with enter the mode that the bank note of examining the paper money passage fully contacts, guarantee that condenser type pole plate 2 picks up fully by the emission pole piece on the condenser type pole plate 2 and outwards launch high frequency waves and by a variation and the modulated sinusoidal wave electric signal of the reception pole piece on the bank note safety line reflected back condenser type pole plate 2, this signal is after a series of processing such as amplification shaping, be connected with discriminating machine for fake RMB by interface, deliver to single-chip microcomputer and carry out quantitative analysis, just can identify the true and false of safety line.And because the difference of its safety line distributing position of bank note of different denominations, so the utility model can also be used to bank note is assisted the branch version.
The condenser type pole plate of bank note safety line false-identifying device, as Fig. 2, Fig. 3, shown in Figure 4, emission pole piece wherein and reception pole piece dispose in pairs, and cross-distribution, can guarantee that the safety line of bank note can contact fully with the pole piece on the condenser type pole plate.
As shown in Figure 5, in order further to improve the reliability of the utility model bank note safety line false-identifying device, its condenser type pole plate is positioned at a side of inspection paper money passage, over against the opposite side wall be provided with the bank note contact roller, both contact roller was installed in the inspection paper money passage wall relative with the condenser type pole plate.Contact roller can help into paper money, can guarantee that again the pole piece on the condenser type pole plate reliably contacts with bank note.
The principle of work of the utility model embodiment is: after discriminating machine for fake RMB work, when the safety line position of bank note is passed through from the centre of contact roller and condenser type pole plate 2, the pole piece of the condenser type pole plate 2 of bank note safety line false-identifying device contacts fully with bank note, condenser type pole plate 2 picks up by the pole piece on the condenser type pole plate 2 outwards launches high frequency waves and by a variation and the modulated sinusoidal wave electric signal of bank note safety line reflected back condenser type pole plate 2, this signal is after a series of processing such as amplification shaping, the single-chip microcomputer of delivering to discriminating machine for fake RMB carries out quantitative analysis, just can identify the true and false of safety line; It is that genuine bank note passes through that discriminating machine for fake RMB can make the safety line signal, shuts down and the safety line signal is reported to the police for other false bank note.And because the difference of its safety line distributing position of bank note of different denominations, so the utility model can also be used to bank note is assisted the branch version; Just can branch away for 50 yuan such as 100 yuan of dollars and dollar.
Claims (9)
1. the bank note safety line false-identifying device with capacitance type sensor comprises: oscillatory circuit (1), condenser type pole plate (2) and the signal processing circuit of the unidirectional connection of order; It is characterized in that: the high frequency waves that described oscillatory circuit (1) produces are outwards launched by the emission pole piece of described condenser type pole plate (2), the safety line reflection that enters the bank note of inspection paper money passage is launched the outwards high frequency waves of emission of pole piece by condenser type pole plate (2), these reflection high frequency waves receive and are sent to described signal processing circuit (3) processing by the reception pole piece of condenser type pole plate (2), and can be for the signal of discriminating machine for fake RMB identification by signal processing circuit output.
2. the bank note safety line false-identifying device with capacitance type sensor according to claim 1 is characterized in that: the emission pole piece of described condenser type pole plate (2) and reception pole piece dispose in pairs.
3. the bank note safety line false-identifying device with capacitance type sensor according to claim 1 and 2 is characterized in that: the emission pole piece of described condenser type pole plate (2) and reception pole piece cross-distribution.
4. the bank note safety line false-identifying device with capacitance type sensor according to claim 1 and 2 is characterized in that: described condenser type pole plate (2) is positioned at a side of inspection paper money passage, over against the opposite side wall be provided with the bank note contact roller.
5. the bank note safety line false-identifying device with capacitance type sensor according to claim 1, it is characterized in that: described signal processing circuit comprises: preamplifying circuit (31), detection shaping circuit (32), back level amplification output circuit (33).
6. the bank note safety line false-identifying device with capacitance type sensor according to claim 5 is characterized in that: described preamplifying circuit (31) comprising: prime signal amplification circuit and prime high input impedance match circuit.
7. the bank note safety line false-identifying device with capacitance type sensor according to claim 5 is characterized in that: described detection shaping circuit (32) comprising: full-wave rectifying circuit and high-frequency filter circuit.
8. the bank note safety line false-identifying device with capacitance type sensor according to claim 5 is characterized in that: described back level amplification output circuit (33) comprising: back level high input impedance match circuit and back level amplifying circuit.
9. the bank note safety line false-identifying device with capacitance type sensor according to claim 1 is characterized in that: the described signal of being discerned by Gong the discriminating machine for fake RMB of signal processing circuit output is that amplitude is 0 to 12 volt a sine wave signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520053839 CN2765260Y (en) | 2005-01-13 | 2005-01-13 | A safety line authenticator for paper money with capacitor type sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520053839 CN2765260Y (en) | 2005-01-13 | 2005-01-13 | A safety line authenticator for paper money with capacitor type sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2765260Y true CN2765260Y (en) | 2006-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520053839 Expired - Fee Related CN2765260Y (en) | 2005-01-13 | 2005-01-13 | A safety line authenticator for paper money with capacitor type sensor |
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| CN (1) | CN2765260Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103578172A (en) * | 2012-07-23 | 2014-02-12 | 辽宁聚龙金融设备股份有限公司 | Module for recognizing safety line of paper money |
| CN104049003A (en) * | 2014-06-10 | 2014-09-17 | 中国人民银行印制科学技术研究所 | Array-capacitor inductive sensor and negotiable-securities anti-counterfeit detection method |
| CN105809811A (en) * | 2014-12-31 | 2016-07-27 | 聚龙股份有限公司 | Safety line detection method in paper currency processing |
-
2005
- 2005-01-13 CN CN 200520053839 patent/CN2765260Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103578172A (en) * | 2012-07-23 | 2014-02-12 | 辽宁聚龙金融设备股份有限公司 | Module for recognizing safety line of paper money |
| CN104049003A (en) * | 2014-06-10 | 2014-09-17 | 中国人民银行印制科学技术研究所 | Array-capacitor inductive sensor and negotiable-securities anti-counterfeit detection method |
| CN105809811A (en) * | 2014-12-31 | 2016-07-27 | 聚龙股份有限公司 | Safety line detection method in paper currency processing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060315 Termination date: 20120113 |