CN2938237Y - Money checking machine with forge money discerning function - Google Patents
Money checking machine with forge money discerning function Download PDFInfo
- Publication number
- CN2938237Y CN2938237Y CNU2006201069359U CN200620106935U CN2938237Y CN 2938237 Y CN2938237 Y CN 2938237Y CN U2006201069359 U CNU2006201069359 U CN U2006201069359U CN 200620106935 U CN200620106935 U CN 200620106935U CN 2938237 Y CN2938237 Y CN 2938237Y
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- CN
- China
- Prior art keywords
- magnetic head
- circuit
- amplifying circuit
- long magnetic
- amplifier circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Inspection Of Paper Currency And Valuable Securities (AREA)
Abstract
The utility model discloses a currency count machine with the function of cash discrimination and amount figuring up, which comprises a mechanical cash twisting device, a discrimination device and a counter device; the discrimination device consists of a magnetic head and a short magnetic head; the short magnetic head is installed at the ends of the long magnetic head; the long magnetic head consists of a first amplifier circuit and a second amplifier circuit, which is characterized in that both the first amplifier circuit and the second amplifier circuit adopt the TL084 chip; the input end of the first amplifier circuit is connected with a low-pass filter circuit which comprises two resistances and two capacitances; and a feedback decaying circuit structured by a resistance and a capacitance is connected with the input end and the output end of the first amplifier circuit in parallel. The currency count machine of the utility model is characterized in that the signal of the long magnetic head is input to the low-pass filter circuit and attenuated through the feedback decaying circuit which form a low frequency band pass amplifying circuit; and the collecting of the signal from the safety line of RMB is completely and the noise wave is strongly restrained, the processing is clearly.
Description
[technical field]
The utility model relates to the paper money counter that a kind of financial industry is used, and particularly discerns the paper money counter of false distinguishing at the 5th edition Renminbi.
[background technology]
Paper money counter is widely used in the big places of cash flow such as bank, market, hotel, greatly improved the work efficiency of each several part, human resources have been saved, the paper money counter that particularly has the false distinguishing ability, special especially finance device, the needs that will distinguish along with the distribution and the counterfeit money of new money and constantly upgrading and perfect.
The paper money counter that can distinguish counterfeit money in the prior art is varied, particularly at the paper money counter of the 5th edition Renminbi, basically to declare pseudo-device all be to be made of a long magnetic head and two short magnetic heads in its identification, and short magnetic head is installed in the both sides of long magnetic head, makes it can differentiate old edition and new edition Renminbi simultaneously.In order accurately to differentiate the safety line of the 5th edition Renminbi, its long magnetic head also all is to be made of the two-stage amplifying circuit, long magnetic head electrical line structure as shown in Figure 1 is often to use in the present paper money counter, in this long magnetic head electrical line structure, what its amplifying circuit chip adopted all is the LM324 type, because in the capacitor C 1 of one the 4.7 μ F of input end serial connection of first order amplifying circuit, and the direct ground connection of negative pole that will long magnetic head, make the magnetic head signal be subjected to the influence of power ground and instability, magnetic signal drifts about easily; And coupling capacitance is excessive, easily the low-frequency noise signal is amplified, and signal waveform useful in the magnetic signal is disturbed.Thereby, the paper money counter of this structure, its signal to noise ratio (S/N ratio) is lower, and the ripple amount of making an uproar is big, amplifies the accuracy that the back influences magnetic signal, has reduced the particularly false distinguishing performance of the 5th edition Renminbi of Renminbi.
[utility model content]
In view of the deficiency that exists in the background technology, the technical problems to be solved in the utility model provides a kind of signal to noise ratio (S/N ratio) height, the ripple amount of making an uproar is little, and long magnetic head is gathered the high paper money counter with counterfeit identifying function and amount of money total function of magnetic signal accuracy.
In order to solve the problems of the technologies described above, the utility model takes following technical scheme to realize: a kind of paper money counter with counterfeit identifying function, include machinery and twist with the fingers the paper money device, pseudo-device and counting assembly are declared in identification, described identification is declared pseudo-device and is comprised long magnetic head and short magnetic head, described short magnetic head is installed in the two ends of long magnetic head, described long magnetic head is made of first order amplifying circuit and second level amplifying circuit, what it is characterized in that the employing of described first order amplifying circuit and second level amplifying circuit is the TL084 chip, the input end of its first order amplifying circuit is connected with the low-pass filter circuit that is made of two resistance and electric capacity, and the feedback attenuation circuit that constitutes at its input and output side resistance in parallel and electric capacity.
In the utility model, the signal input of its long magnetic head is through low-pass filter circuit, and by after the decay of feedback attenuation circuit, form the logical amplifying circuit of a low-frequency band, characteristics such as the safety line picking up signal to Renminbi is complete, the ripple of making an uproar suppresses by force, signal Processing is clear, thus higher to Renminbi false distinguishing accuracy rate.
Behind the minus earth that makes long magnetic head, the signal of its amplifying circuit input is not subjected to the influence of power ground, and the negative pole of described long magnetic head connects ground connection behind the resistance.
More accurate for the magnetic signal that makes collection, be connected with shaping circuit at the output terminal of described second level amplifying circuit.
[description of drawings]
Further describe relevant details of the present utility model below more in conjunction with the accompanying drawings.
Fig. 1 is the circuit structure diagram of long magnetic head in the background technology;
Fig. 2 is one-piece construction figure of the present utility model;
Fig. 3 is the circuit structure diagram of the long magnetic head of the utility model.
[embodiment]
As shown in the figure, this paper money counter with counterfeit identifying function, include machinery and twist with the fingers the paper money device, pseudo-device and counting assembly are declared in identification, described identification is declared pseudo-device and is comprised long magnetic head and short magnetic head, described short magnetic head is installed in the two ends of long magnetic head, described long magnetic head is made of first order amplifying circuit and second level amplifying circuit, what described first order amplifying circuit and second level amplifying circuit adopted is the TL084 chip, the input disconnection of its first order amplifying circuit is connected to by two resistance R 50, the low-pass filter circuit that R51 and capacitor C 50 constitute, can the decay signal of 10KHZ of this circuit, resistance R 52, R54 and capacitor C 54 and TL084 type low noise amplifier chip are formed a basic amplifier circuit, and the feedback attenuation circuit that constitutes in the input and output side of a TL084 chip resistance R 53 in parallel and capacitor C 51, capacitor C 51 is 330PF, this high frequency feedback electric capacity disturbs with the attenuate high frequency circuit, and wherein the enlargement factor of first order amplification path is 5000 times.The signal source of above-mentioned long magnetic head mainly is the signal that the magnetic security of Renminbi slips over head surface and produces by the induction of magnetic head interior loop.Described second level amplifying circuit by resistance R 56, R57,58 and the TL084 cake core constitute, the enlargement factor of this amplifying circuit is 2500 times; The negative pole of described long magnetic head connects the resistance R 55 back ground connection of a 300K, so just is not subjected to the influence of power ground, can not make magnetic signal produce drift.Output terminal at described second level amplifying circuit is connected with shaping circuit, and this shaping circuit is a diode D1; The comparator circuit that magnetic signal is formed through R61, R60 and TL084 chip is delivered in one stage arrangement of back after to wave shaping and is handled.In the utility model, the signal input of its long magnetic head is through low-pass filter circuit, and by after the decay of feedback attenuation circuit, form the logical amplifying circuit of a low-frequency band, safety line picking up signal to Renminbi is complete, the ripple of making an uproar suppresses strong, handles characteristics such as clear, thereby higher to Renminbi false distinguishing accuracy rate.
Claims (3)
1, a kind of paper money counter with counterfeit identifying function, include machinery and twist with the fingers the paper money device, pseudo-device and counting assembly are declared in identification, described identification is declared pseudo-device and is comprised long magnetic head and short magnetic head, described short magnetic head is installed in the two ends of long magnetic head, described long magnetic head is made of first order amplifying circuit and second level amplifying circuit, what it is characterized in that the employing of described first order amplifying circuit and second level amplifying circuit is the TL084 chip, the input end of its first order amplifying circuit is connected with the low-pass filter circuit that is made of two resistance and electric capacity, and the feedback attenuation circuit that constitutes at its input and output side resistance in parallel and electric capacity.
2, the paper money counter with counterfeit identifying function according to claim 1, the negative pole that it is characterized in that described long magnetic head connect ground connection behind the resistance.
3, the paper money counter with counterfeit identifying function according to claim 1 is characterized in that the output terminal of described second level amplifying circuit is connected with shaping circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201069359U CN2938237Y (en) | 2006-08-16 | 2006-08-16 | Money checking machine with forge money discerning function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201069359U CN2938237Y (en) | 2006-08-16 | 2006-08-16 | Money checking machine with forge money discerning function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2938237Y true CN2938237Y (en) | 2007-08-22 |
Family
ID=38362265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201069359U Expired - Lifetime CN2938237Y (en) | 2006-08-16 | 2006-08-16 | Money checking machine with forge money discerning function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2938237Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108718208A (en) * | 2018-06-29 | 2018-10-30 | 河南中多科技发展有限公司 | Communicating circuit under a kind of rolling lands D |
| CN109031245A (en) * | 2018-08-21 | 2018-12-18 | 南京华讯方舟通信设备有限公司 | 4 quadrant detector signal amplification circuit for laser radar |
| CN109144213A (en) * | 2018-06-29 | 2019-01-04 | 河南中多科技发展有限公司 | Communicating circuit under a kind of rolling land D with reset function |
-
2006
- 2006-08-16 CN CNU2006201069359U patent/CN2938237Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108718208A (en) * | 2018-06-29 | 2018-10-30 | 河南中多科技发展有限公司 | Communicating circuit under a kind of rolling lands D |
| CN109144213A (en) * | 2018-06-29 | 2019-01-04 | 河南中多科技发展有限公司 | Communicating circuit under a kind of rolling land D with reset function |
| CN109144213B (en) * | 2018-06-29 | 2020-06-30 | 河南中多科技发展有限公司 | D-wave underground communication circuit with reset function |
| CN108718208B (en) * | 2018-06-29 | 2024-04-09 | 河南中多科技发展有限公司 | D wave underground communication circuit |
| CN109031245A (en) * | 2018-08-21 | 2018-12-18 | 南京华讯方舟通信设备有限公司 | 4 quadrant detector signal amplification circuit for laser radar |
| CN109031245B (en) * | 2018-08-21 | 2024-05-10 | 国蓉科技有限公司 | Four-quadrant detector signal amplifying circuit for laser radar |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Zhejiang Weirong Electronic Co., Ltd. Assignor: Wei Wei Contract record no.: 2010330001514 Denomination of utility model: Money checking machine with forge money discerning function Granted publication date: 20070822 License type: Exclusive License Record date: 20100730 |
|
| CX01 | Expiry of patent term |
Granted publication date: 20070822 |
|
| EXPY | Termination of patent right or utility model |