CN202472788U - Thickness measuring device in paper currency sorter - Google Patents
Thickness measuring device in paper currency sorter Download PDFInfo
- Publication number
- CN202472788U CN202472788U CN 201120536409 CN201120536409U CN202472788U CN 202472788 U CN202472788 U CN 202472788U CN 201120536409 CN201120536409 CN 201120536409 CN 201120536409 U CN201120536409 U CN 201120536409U CN 202472788 U CN202472788 U CN 202472788U
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- paper currency
- thickness
- currency sorter
- pcb
- slide block
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Abstract
The utility model relates to a thickness measuring device in a paper currency sorter, comprising a base, a thickness sensing metal sheet, a plurality of PCB (Printed Circuit Board) planar coils, a sliding block, a driving wheel, a driven wheel, a transmission shaft, and a signal processing circuit. The thickness measuring device in the paper currency sorter of the utility model accurately measures the thickness of the paper currency by utilizing an eddy current effect caused by the thickness of the paper currency, thus the thickness measuring device has the advantages of simple structure, convenient operation, high accuracy, capacity for providing a powerful tool for discriminating counterfeit currency, and strong practicality.
Description
Technical field
The utility model relates to a kind of device of measuring thickness, especially, relates to the device of the bank note measurement thickness in a kind of paper currency sorter.
Background technology
Paper currency sorter is mainly used in different other Renminbi of version is cleared up sorting and classification work through adopting the structure of electromechanical integration, and it can realize functions such as counting, counting, identification to rmb paper currency is true and false.Paper currency sorter has that speed is fast, noise is little, power consumption less, advantage such as in light weight.
For paper currency sorter, the precision of its properties of product is degree of accuracy of most important index, especially its measurable banknote thickness.Yet; Present employed paper currency sorter can only be measured the thickness about 0.03mm; And this is equivalent to the thickness after sticking one layer tape on the bank note; Had a strong impact on the accuracy of paper currency sorter work, and existing cleaning-sorting machine can not quantize to the result who measures, cause to make accurately measurement result and analyze.
The utility model content
The purpose of the utility model is to improve the measuring thickness device in a kind of paper currency sorter, and its eddy current effect that utilizes banknote thickness change to cause is measured the thickness of bank note accurately, thereby necessary condition is provided for the effective recognition counterfeit money.
To achieve these goals, the measuring thickness device in a kind of paper currency sorter of the utility model, it comprises base, thickness perception sheet metal; Some PCB spiral windings, slide block, driving wheel; Engaged wheel, transmission shaft and signal processing circuit, wherein; Said base top is provided with cavity, and the bottom is provided with said slide block, and the lug boss of said slide block stretches out said base upper surface; Said thickness perception sheet metal one end is fixed on said base top, and the other end is close to the lug boss of said slide block; Said some PCB spiral windings are arranged on the bottom of pcb board, are oppositely arranged with said thickness perception sheet metal, and constitute resonator cavity with cavity and said thickness perception sheet metal in the said base; Said engaged wheel is arranged on said slide block bottom, and said driving wheel is set on the said transmission shaft, and said relatively engaged wheel setting, and said signal processing circuit is arranged on the said pcb board.
Measuring thickness device in the above-mentioned paper currency sorter, wherein, the diameter of said PCB spiral winding is 3.9mm, live width is 0.12mm.
Measuring thickness device in the above-mentioned paper currency sorter, wherein, the inductance value of said PCB spiral winding is 2uH.
Measuring thickness device in the above-mentioned paper currency sorter wherein, also comprises display, is used to show the banknote thickness that obtains.
Measuring thickness device in the above-mentioned paper currency sorter, wherein, the number of said PCB spiral winding is 12.
Measuring thickness device in the above-mentioned paper currency sorter, wherein, said several PCB spiral windings are equidistant to be arranged on said pcb board bottom.
Measuring thickness device in the above-mentioned paper currency sorter, wherein, said signal processing circuit comprises fpga chip.
Measuring thickness device in the above-mentioned paper currency sorter, wherein, said driving wheel, base, the axle center of thickness perception sheet metal and some PCB spiral windings is fixed.
Measuring thickness device in the above-mentioned paper currency sorter, wherein, the position of the axle center of said engaged wheel and slide block right-hand member is variable.
Therefore, the measurer for thickness in a kind of paper currency sorter of the utility model is measured the thickness of bank note accurately through the eddy current effect that utilizes banknote thickness to cause, and it is simple in structure; Easy to operate; And accuracy is high, for differentiating that counterfeit money provides strong instrument, has very strong practicality.
Description of drawings
Fig. 1 is the side structure synoptic diagram of the measuring thickness device in the paper currency sorter of the utility model;
Fig. 2 is the perspective view of the measuring thickness device in the paper currency sorter of the utility model;
Fig. 3 is the structural representation of the PCB spiral winding in the sensor of the utility model;
Fig. 4 is the structural representation of a plurality of PCB spiral windings in the measuring thickness device in the paper currency sorter of the utility model;
Fig. 5 is the structural representation of the signal processing circuit in the measuring thickness device in the paper currency sorter of the utility model.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is done further detailed explanation, but not as the qualification to the utility model.
As depicted in figs. 1 and 2, the measuring thickness device in the paper currency sorter of the utility model comprises base 5, thickness perception sheet metal 3, some PCB spiral windings 1, slide block 4, driving wheel 7, engaged wheel 6, transmission shaft 8 and signal processing circuit (not shown).Wherein, base 5 tops are provided with cavity, and the bottom is provided with slide block 4, and lug boss protuberate basic unit 5 upper surfaces of slide block 4; One end of thickness perception sheet metal 3 is fixed on the upper left quarter of base 5, and the other end is close to the lug boss of slide block 4; Some PCB spiral windings 1 are arranged on the bottom of pcb board 2, are oppositely arranged with thickness perception sheet metal 3, and constitute resonator cavitys jointly with cavity and thickness perception sheet metal 3 in the base 5; Engaged wheel 6 is arranged on slide block 4 bottoms, and driving wheel 7 fixed covers are located on the transmission shaft 8, and engaged wheel 6 is provided with relatively, and the distance between the two only can be passed through by paper supply coin 9.Signal processing circuit then is arranged on the pcb board 2.Wherein, in cavity in PCB spiral winding 1, base 5 and the thickness perception sheet metal 3 common formation resonator cavitys, PCB spiral winding 1 has constituted oscillation circuit with stray capacitance and building-out capacitor that thickness perception sheet metal 3 forms.
Wherein, the concrete structure of PCB spiral winding 1 is as shown in Figure 3.Can know that by figure the PCB spiral winding is to begin helically coiling by electric wire from central authorities to form, its repeatability is fabulous.In order to guarantee the accurate measurement of banknote thickness, wherein, the diameter of PCB spiral winding is set at 3.9mm, and live width is 0.12mm, and inductance value is 2 uH.In the utility model, on the bottom of pcb board 1, be provided with 12 PCB spiral windings 1 with equidistant mode, specifically as shown in Figure 4.
In the measuring thickness device in the paper currency sorter of the utility model, the axle center of driving wheel 7, base 5, thickness perception sheet metal 3, pcb board 2 and some PCB spiral windings 1 is fixed.The right-hand member of the axle center of engaged wheel 6, slide block 4 then moves up and down with the insertion of bank note.
In a preferred embodiment of the utility model, also comprise a display, thereby the banknote thickness that measures is shown.This display directly links to each other with signal processing circuit.In addition, comprise fpga chip in the signal processing circuit, be used for the correlation computations of banknote thickness.
Need to prove, when thickness perception sheet metal 3 is close to an end and the variable in distance between some PCB spiral windings 1 of slide block 4, has two physical phenomenons simultaneously and take place:
Capacity effect; The reducing of distance between PCB spiral winding 1 and the thickness perception sheet metal 3 means the increase of stray capacitance, thereby oscillation frequency f is descended;
Eddy current effect; Distance reduces between PCB spiral winding 1 and the thickness perception sheet metal 3; Cause the current vortex of oscillation frequency on thickness perception sheet metal 3 to increase; Thereby reduced the inductance of oscillation circuit equivalently, can know that by the computing formula of oscillation frequency oscillation frequency f will raise again.
Therefore, caused capacity effect of variable in distance between PCB spiral winding 1 and the thickness perception sheet metal 3 and eddy current effect are opposite to the influence and the effect of oscillation circuit.And experimental result shows: in the measuring thickness device in the paper currency sorter of the utility model, along with reducing of distance between thickness perception sheet metal 3 and the PCB spiral winding 1, oscillation frequency f will rise.So in the utility model, eddy current effect is playing a major role.
More than the specific embodiment of the utility model is described in detail, but the utility model is not restricted to the specific embodiment of above description, it is just as example.To those skilled in the art, any equivalent modifications that measuring thickness device in this paper currency sorter is carried out with substitute also all among the category of the utility model.Therefore, impartial conversion and the modification under spirit that does not break away from the utility model and scope, done all should be encompassed in the scope of the utility model.
Claims (9)
1. the measuring thickness device in the paper currency sorter is characterized in that, comprises base, thickness perception sheet metal; Some PCB spiral windings, slide block, driving wheel; Engaged wheel, transmission shaft and signal processing circuit, wherein; Said base top is provided with cavity, and the bottom is provided with said slide block, and the lug boss of said slide block stretches out said base upper surface; Said thickness perception sheet metal one end is fixed on said base top, and the other end is close to the lug boss of said slide block; Said some PCB spiral windings are arranged on the bottom of pcb board, are oppositely arranged with said thickness perception sheet metal, and constitute resonator cavity with cavity and said thickness perception sheet metal in the said base; Said engaged wheel is arranged on said slide block bottom, and said driving wheel is set on the said transmission shaft, and said relatively engaged wheel setting, and said signal processing circuit is arranged on the said pcb board.
2. the measuring thickness device in the paper currency sorter according to claim 1 is characterized in that, the diameter of said PCB spiral winding is 3.9mm, and live width is 0.12mm.
3. the measuring thickness device in the paper currency sorter according to claim 1 is characterized in that, the inductance value of said PCB spiral winding is 2uH.
4. the measuring thickness device in the paper currency sorter according to claim 1 is characterized in that, also comprises display, is used to show the banknote thickness that obtains.
5. the measuring thickness device in the paper currency sorter according to claim 1 is characterized in that, the number of said PCB spiral winding is 12.
6. the measuring thickness device in the paper currency sorter according to claim 1 is characterized in that, said several PCB spiral windings are equidistant to be arranged on said pcb board bottom.
7. the measuring thickness device in the paper currency sorter according to claim 1 is characterized in that said signal processing circuit comprises fpga chip.
8. the measuring thickness device in the paper currency sorter according to claim 1 is characterized in that, said driving wheel, and base, the axle center of thickness perception sheet metal and some PCB spiral windings is fixed.
9. the measuring thickness device in the paper currency sorter according to claim 1 is characterized in that, the position of the axle center of said engaged wheel and slide block right-hand member is variable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120536409 CN202472788U (en) | 2011-12-20 | 2011-12-20 | Thickness measuring device in paper currency sorter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120536409 CN202472788U (en) | 2011-12-20 | 2011-12-20 | Thickness measuring device in paper currency sorter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202472788U true CN202472788U (en) | 2012-10-03 |
Family
ID=46920932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120536409 Expired - Fee Related CN202472788U (en) | 2011-12-20 | 2011-12-20 | Thickness measuring device in paper currency sorter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202472788U (en) |
-
2011
- 2011-12-20 CN CN 201120536409 patent/CN202472788U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121003 Termination date: 20171220 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |