CN104361678A - Experimental device for visualization research of motion state of passing banknotes in currency counter-detector - Google Patents
Experimental device for visualization research of motion state of passing banknotes in currency counter-detector Download PDFInfo
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
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Abstract
The invention discloses an experimental device for visualization research of motion state of passing banknotes in a currency counter-detector. The experimental device comprises a visual model counter-detector, an angle adjustment, a high-speed camera, a spotlight and a PC (personal computer); an internal currency roller set structure of the visual model counter-detector is clear to view, the angle adjustment allows a driven roller of a first roller set to be adjusted relative to a driving roller, the relative angle of the driven roller and the driving roller is adjusted to allow different feed positions, and different feed paths are obtained; the high-speed camera is used for capturing motion attitudes of a banknote during passing; the spotlight is used for ensuring that the high-speed camera can capture vivid images; the PC is used for processing the images acquired by the high-speed camera, drawing banknote motion paths and fitting a banknote displacement curve graph of the whole passing process. The experimental device has the advantages that the whole motion path of the banknote passing in the currency roller sets with different structural parameters can be reconstructed, and optimal relative deflection angle with optimal banknote conveying smoothness is obtained by research on the reconstructed path.
Description
Technical field
The present invention relates to the technical field of currency counting and detecting machine dynamic experiment, refer in particular to the experimental provision that a kind of currency counting and detecting machine crosses paper money motion state visual research.
Background technology
Study general currency counting and detecting machine being walked to paper money wheels is studied based on the aspect of mechanics, and then is better study its ride comfort and some other performance.At present, main several as follows to the research method walking paper money wheels: 1) based on the research method of mechanics, for the contact problems of elastic roller and paper, utilize stress function in conjunction with simple theoretical algorithm and iterative program, obtain the equation that can be used to show contact area, stressed by elastomeric nonlinear theory derivation elastic body, set up the model of power between it.Optimization and the upgrading of its corresponding structure is studied further according to its mechanics result drawn.Although but this rationalistic research method seems very is precisely can not conform to completely with actual conditions in fact, concrete data foundation clearly can not be provided for Optimal Development structure new construction.2) utilize the method for emulation of the computer software, based on experiment and mechanical relationship, calculate necessary parameter, set up the mechanical model of relation between its inside.Dynamics simulation software is utilized to carry out simulation analysis.Its motion state can be manifested to a certain extent and transmit attitude.And then study upgrading and the optimization of Zou Chao mechanism.But still there are some differences with actual conditions in this method, for some important parameters can only be limited setting and supposition, some parameter can not be completely consistent with truth, and be that bank note is set as rigid body in simulation process, but actual conditions are not rigid bodies, institute in this way can only react general condition to a certain extent, and bank note a kind of hold yielding flexible body and cannot simulate completely with simulation software.
Existing method all to a certain degree with in there are some defects, and the place that this experimental provision can compensate its defect in these areas, the Zou Chao mechanism for research paper money counter is significant.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of high precision is provided, experimental provision that simple to operate, practical currency counting and detecting machine crosses paper money motion state visual research, the drawback that theory when forefathers can be avoided to study or emulation can not conform to actual conditions completely, and the visual field restricted problem when former machine gathers can be avoided.
For achieving the above object, technical scheme provided by the present invention is: a kind of currency counting and detecting machine crosses the experimental provision of paper money motion state visual research, includes:
Visualization point currency examine model machine, its shell adopts transparent material to make, and clearly can observe model machine inside and walk paper money wheel group structure, the first roller set including note-twisting wheel, the second roller set and be located between note-twisting wheel and the second roller set;
Angle adjusting mechanism, makes the engaged wheel in described first roller set adjustable relative to the position of its driving wheel, realizes different entering paper money position by adjustment engaged wheel and the relative angle between driving wheel, thus obtains different entering paper money track;
High speed camera, is crossing the athletic posture in paper money process for catching bank note;
Spotlight, for guaranteeing that described high speed camera can capture picture rich in detail;
PC, processes for the picture adopted described high speed camera, draws bank note movement locus, and simulates the whole bank note displacement curve figure crossing paper money process.
Described PC is configured with autocad software and matlab software, wherein, utilize the picture editing function of autocad software to carry out mark to the picture that high speed camera imports to measure, its process is: in the master menu hurdle of autocad software interface, select the reference of insertion-raster image, image file dialog box can be ejected, after finding the picture needing to measure to confirm, formulate insertion point, get final product insert pictures, then by SC the Scale command adjustment size of software, by Image Adjusting ratio to mechanism's physical size, the mapping function recycling software is afterwards demarcated bank note leading edge point, circulation like this, a large amount of high speed camera picture can be inserted, realize the object that in setting insertion point, scaling, acquisition picture, physical dimension is equal with practical structures size, and in the process editing and processing is carried out to picture, mark a large amount of bank note front ends calibration point, their distribution is roughly a curve, has so just reappeared the track that paper money crossed by bank note, thus obtains the displacement variable between the displacement of bank note leading edge end points relative reference initial point and each leading edge end points, utilize matlab software programming to realize the least square method of curve, experimental data is processed, and then obtain the whole bank note displacement curve figure crossing paper money process.
The relative angle that described angle adjusting mechanism adopts three angle index flaps to come in accurate adjustment first roller set between engaged wheel and driving wheel, described engaged wheel is positioned at the below of driving wheel, and be assemblied on driven shaft, described driving wheel is assemblied on main drive shaft, and described relative angle is engaged wheel axis and the corner dimension through between the vertical curve of driving wheel axis, wherein, described three angle index flaps have two pieces of symmetries to be located at inside the biside plate of visualization point currency examine model machine, every block three angle index flap is provided with drive shaft bearing pilot hole successively from top to bottom from drift angle, driven shaft bearing pilot hole, pin positioning runner, the biside plate of described visualization point currency examine model machine is provided with symmetrical pin-and-hole and the chute for the slip of driven shaft end bearing, described two piece of three angle index flap is fixed in the bearings at both ends of main drive shaft by respective drive shaft bearing pilot hole, described driven shaft is arranged on two or three angle index flap by its bearings at both ends, described three angle index flaps can main drive shaft axis be that rotation center deflects, thus drive engaged wheel skew, and then realize regulating the relative angle between engaged wheel and driving wheel, described pin-and-hole is suitable to pin positioning runner corresponding separately, after regulating the relative angle between engaged wheel and driving wheel, can be positioned adjusted good deflection angle by the tommy inserted in pin-and-hole and pin positioning runner, fixed triangle scale flap.
The range of deflection angles of described three angle index flaps is deflection 10 °.
Compared with prior art, tool has the following advantages and beneficial effect in the present invention:
The present invention is based in the thinking of experiment, avoid theoretical calculation when studying at present or emulate the drawback that can not conform to actual conditions completely.Clearly can capture bank note High Speed Transfer process in currency counting and detecting machine, caught paper money motion state in real time, and by arranging adjustable angle mechanism, engaged wheel phase in adjustable first roller set and the relative angle of driving wheel, to realize the change transmitting track, finally by the software process of computing machine, the whole movement locus in paper money wheels walked by restructural bank note at Different structural parameters, and then research show that bank note transmits the relative deflection angle of the best the best of smooth-going performance, thus it is the most smooth-going to realize bank note transmission, transfer efficiency is the highest, and bank note warpage degree is minimum.
Accompanying drawing explanation
Fig. 1 is the structure diagram of visualization point currency examine model machine of the present invention.
Fig. 2 is the structural representation of three angle index flaps of the present invention.
Fig. 3 is cursor present position coordinate precision display figure in autocad.
Fig. 4 is bank note full range transmission leading edge endpoint trace figure.
Fig. 5 draws movement locus figure for connecting bank note leading edge end points.
Fig. 6 is bank note moving displacement curve map.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described.
Currency counting and detecting machine described in the present embodiment crosses the experimental provision of paper money motion state visual research, includes:
Visualization point currency examine model machine, its structural parameters and size are all the same with former machine, as shown in Figure 1, consistent effect can be reached, unique difference is the panel beating plate adopting the high poly (methyl methacrylate) plate of transparency to replace former machine, even if its shell is visual, walk paper money wheel group structure clearly can observe model machine inside, described model machine inside is walked paper money wheel group structure and is included note-twisting wheel 3, second roller set 2 and be located at the first roller set 1 between note-twisting wheel 3 and the second roller set 2;
Angle adjusting mechanism, makes the position of engaged wheel 101 its driving wheel 102 relative in described first roller set 1 adjustable, realizes different entering paper money position by adjustment engaged wheel 101 and the relative angle between driving wheel 102, thus obtains different entering paper money track;
High speed camera, the athletic posture in paper money process is being crossed for catching bank note, adopt the high-speed camera that Vision Research company of the U.S. releases for 1,000,000 Pixel-level, full width capture rate is 1630 frames/second, the highest capture rate can reach 400000 frames/second, and 500ns double exposure minimum interval can meet the needs of PIV application;
Spotlight, for guaranteeing that described high speed camera can capture picture rich in detail, ensures that Success in Experiment is carried out;
PC, processes for the picture adopted described high speed camera, draws bank note movement locus, and simulates the whole bank note displacement curve figure crossing paper money process.
The relative angle that described angle adjusting mechanism adopts three angle index flaps to come in accurate adjustment first roller set between engaged wheel and driving wheel, described engaged wheel is positioned at the below of driving wheel, and be assemblied on driven shaft, described driving wheel is assemblied on main drive shaft, and described relative angle is engaged wheel axis and the corner dimension through between the vertical curve of driving wheel axis, wherein, described three angle index flaps have two pieces of symmetries to be located at inside the biside plate of visualization point currency examine model machine, every block three angle index flap is provided with drive shaft bearing pilot hole 401 successively from top to bottom from drift angle, driven shaft bearing pilot hole 402, pin positioning runner 403, as shown in Figure 2, the biside plate of described visualization point currency examine model machine is provided with symmetrical pin-and-hole and the chute for the slip of driven shaft end bearing, described two piece of three angle index flap is fixed in the bearings at both ends of main drive shaft by respective drive shaft bearing pilot hole 401, described driven shaft is assemblied on the driven shaft bearing pilot hole 402 of two or three angle index flap by its bearings at both ends, and then be arranged on this two piece of three angle index flap, and drive skew by this two piece of three angle index flap, described three angle index flaps can main drive shaft axis be that rotation center deflects, thus drive engaged wheel skew, and then realize regulating the relative angle between engaged wheel and driving wheel, and the range of deflection of described three angle index flaps is deflection 10 °, described pin-and-hole is suitable to pin positioning runner 403 corresponding separately, after regulating the relative angle between engaged wheel and driving wheel, can be fixed three angle index flaps by the tommy inserted in pin-and-hole and pin positioning runner, and then realize positioning adjusted good deflection angle.
Described PC is configured with autocad software and matlab software, after high speed camera shooting, what do is exactly data be put in PC software to process, specifically: utilizing high speed camera to collect paper currency transmission image is JPG form, this data image is imported in the autocad software of PC, utilize the picture editing function of autocad software to carry out mark to the picture that high speed camera imports to measure, its process is as follows:
The reference of insertion-raster image is selected in the master menu hurdle of autocad software interface, image file dialog box can be ejected, after finding the picture needing to measure to confirm, formulate insertion point, get final product insert pictures, then by SC the Scale command adjustment size of software, by Image Adjusting ratio to mechanism's physical size, the mapping function recycling software is afterwards demarcated bank note leading edge point, former picture is removed after demarcating, demarcation is left in autocad base map, demarcate to carry out bank note leading edge endpoint location more accurately, demarcate after the image zooming function of software can be adopted to amplify, after in autocad, cursor present position coordinate precision can reach radix point, four meet measurement requirement, as shown in Figure 3, circulation like this, a large amount of high speed camera picture can be inserted, realize the object that in setting insertion point, scaling, acquisition picture, physical dimension is equal with practical structures size, and in the process editing and processing is carried out to picture, mark a large amount of bank note front ends calibration point, their distribution is roughly a curve, mark by circles mark, as shown in Figure 4, so just reappeared the track that paper money crossed by bank note, rear connection bank note leading edge end points draws movement locus, as shown in Figure 5.
Need seek a kind of better simply approximation of function according to the lot of experimental data recorded to solve, the least square method of curve is applied widely in this kind of Data Processing in Experiment of solution and error analysis, can improve the Efficiency and accuracy of data processing.Utilize matlab software programming to realize the least square method of curve in the present invention, experimental data is processed, and then obtain the whole bank note displacement curve figure crossing paper money process.
In addition, affect to some extent bank note motion state to reduce the vibration produced that operates of currency counting and detecting machine definite-purpose motor, the drive motor be equipped with for platform is that design model is YYD40R-4H definite-purpose motor and is cordless with the connected mode of platform.Transmission between gear is not toothed belt but circular strap transmission, can increase the stationarity of transmission like this, prevents belt slip phenomenon.
During experiment, be mainly divided into following three steps: first step is the relative angle of measuring engaged wheel and driving wheel when being 0 °, and whether inspection bank note can cross paper money smoothly, and utilize high speed camera gather bank note paper money situation; Second step is whether the relative angle (different angles, 1 °, 2 °, 3 ° ... .10 °) when left and right dynamic change measuring engaged wheel and driving wheel can cross paper money smoothly, and utilizes high speed camera collection bank note to cross paper money situation; Third step arranges the picture that captures of high speed camera, and import in PC and process.
Concrete implementation method is as follows:
1) first experiment test equipment connection is completed, then by high speed camera and spotlight location.
2) PC, high speed camera, spotlight are opened, warming-up about half an hour, determine to keep stable state at experimental test procedures Instrumental.
3) experiment starts front most important work is regulate the irradiation position of spotlight, and adjust its its light intensity is reached to suitable position object that high speed camera collects picture rich in detail, after adjustment, high speed camera can obtain visual field clearly.
4) three angle index flaps on visualization point currency examine model machine side plate are regulated, determine the relative position relation of engaged wheel and driving wheel, start experiment table motor, place bank note determination bank note from note input mouth to pass through to walk paper money wheels completely, experiment table motor is stopped, determining to collect whole walk all images of paper money process.
5) view data above-mentioned steps collected arranges and is kept on PC, to carry out next step process.
6) in PC according to the image processing method of above-mentioned software, demarcation is one by one carried out to bank note leading edge end points in every pictures, thus obtains the displacement variable between the displacement of bank note leading edge end points relative reference initial point and each leading edge end points.Wherein, test whole paper currency transmission process by high speed camera collection under left avertence 10 ° and collect altogether 44 bank note motion pictures, wherein 33 whole processes of having reacted bank note and having transmitted under the effect walking paper money wheels, what high speed camera sample frequency selected setting is 500 frames/second, that is to say that 0.002s/ opens.33 image times used of high speed camera collection are approximately 0.002 × 33=0.066s by analysis, that is to say that the time that individual bank note moves is 0.066s.The displacement variable obtained between the displacement of bank note leading edge end points relative reference initial point and each leading edge end points is as shown in table 1 below.
The displacement of table 1-bank note leading edge end points
| Reference point | Time t (s) | Displacement S (mm) | Displacement Δ S |
| 1 | 0.000 | 0.0000 | 0.0000 |
| 2 | 0.002 | 1.4924 | 1.4876 |
| 3 | 0.004 | 3.0313 | 1.5389 |
| 4 | 0.006 | 5.2297 | 2.1984 |
| 5 | 0.008 | 7.4281 | 2.1984 |
| 6 | 0.010 | 9.7584 | 2.3303 |
| 7 | 0.012 | 11.6270 | 1.8686 |
| 8 | 0.014 | 13.5675 | 1.9405 |
| 9 | 0.016 | 15.5061 | 1.9386 |
| 10 | 0.018 | 17.2993 | 1.7932 |
| 11 | 0.020 | 19.1762 | 1.9469 |
| 12 | 0.022 | 21.1578 | 1.9816 |
| 13 | 0.024 | 24.0010 | 2.8432 |
| 14 | 0.026 | 26.7522 | 2.7512 |
| 15 | 0.028 | 29.1506 | 2.3984 |
| 16 | 0.030 | 31.4080 | 2.2574 |
| 17 | 0.032 | 34.5832 | 1.9396 |
| 18 | 0.034 | 40.8058 | 6.2226 |
| 19 | 0.036 | 46.2376 | 5.4318 |
| 20 | 0.038 | 50.7524 | 4.5148 |
| 21 | 0.040 | 54.4707 | 3.7183 |
| 22 | 0.042 | 59.6870 | 5.2163 |
| 23 | 0.044 | 63.9781 | 4.2911 |
| 24 | 0.046 | 69.2704 | 5.2923 |
| 25 | 0.048 | 74.1336 | 4.8632 |
| 26 | 0.050 | 84.1461 | 5.0063 |
| 27 | 0.052 | 88.5802 | 4.4341 |
| 28 | 0.054 | 92.4422 | 3.8620 |
| 29 | 0.056 | 96.3041 | 3.8611 |
| 30 | 0.060 | 102.1686 | 5.8645 |
| 31 | 0.062 | 107.3219 | 5.1533 |
| 32 | 0.064 | 119.1899 | 7.8600 |
| 33 | 0.066 | 124.4822 | 5.2923 |
Matlab software programming is utilized to realize least square method, the carrying out of experimental data is processed, result after process as shown in Figure 6, by finding out in figure that the actual curvilinear trend simulated is roughly the same with model emulation curve, bank note becomes accelerated motion state, enter the paper money stage in realistic model completes when 0.03s, next carries out walking the paper money stage.Because the bank note equation of motion carrying out deriving sets up according to the friction model revised before, parameter value set in some models is certain to different with actual parameter.And emulation can not observe bank note attitudes vibration what suppose to carry out under bank note is the condition of film rigid body, in realistic model, the starting condition of bank note motion is not identical with the starting condition that actual banknote is moved yet, little to actual design directive significance, the curve movement not having the directly actual data measured to draw is more convincing to research bank note motion state.
Choose three angle index flaps at 0 °, left avertence 2 °, 5 °, 10 °, right avertence 2 °, 5 °, 10 °, the time that these seven groups typical diverse location relations walk the transmission bank note that paper money process consumes is as shown in table 2 below, the tilting situation at bank note note output angle is as shown in table 3 below, the frequency acquisition of high speed camera is set as 500 frames/second, and the time of a namely pictures consumption is 0.002s.
Table 2-seven groups of different angles walk paper money process statistics
Wish the mechanism designed can to cross paper money and transmission speed smoothly The faster the better when design point cash inspecting machine, can greatly improve counting speed like this, increase work efficiency.By the date comprision in above form, transmission time increases along with the increase of right avertence angle, reduces with the increase of left avertence angle, ensure transmitting procedure smooth cross paper money and not card paper money when, there is minimum value in a certain number of degrees of left avertence, ensures the time that the consumption of paper money transmitting procedure is the shortest.
Table 3-deflection angle and note output Angle Measurements
| Measure group | Driving wheel and engaged wheel center line corner (°) | Note output angle (°) |
| 1 | 0° | 0° |
| 2 | Right avertence 2 ° | 3° |
| 3 | Right avertence 5 ° | 6° |
| 4 | Right avertence 10 ° | 12° |
| 5 | Left avertence 2 ° | -4° |
| 6 | Left avertence 5 ° | -3° |
| 7 | Left avertence 10 ° | -10° |
By above form induction and conclusion, note output angle can be changed by change engaged wheel and driving wheel relative position relation, that is to say the direction that bank note subsequent time transmits.And the relative angle size of engaged wheel and driving wheel exists close relationship with note output angle, engaged wheel deflection angle can be seen substantially with bank note note output angle equal and opposite in direction from table.
In sum, can be reached a conclusion by above experimental technique: bank note bank note leading edge under different deflection angle warpage can occur when leaving roller by motion and being secondary, and warpage angle is roughly the same with deflection angle.When engaged wheel relative position left avertence, paper currency transmission is the most smooth-going, and transfer efficiency is the highest, and bank note warpage degree is minimum, and individual bank note transmission time is the shortest is 0.076s.
The examples of implementation of the above are only the preferred embodiment of the present invention, not limit practical range of the present invention with this, therefore the change that all shapes according to the present invention, principle are done, all should be encompassed in protection scope of the present invention.
Claims (4)
1. currency counting and detecting machine crosses an experimental provision for paper money motion state visual research, it is characterized in that, includes:
Visualization point currency examine model machine, its shell adopts transparent material to make, and clearly can observe model machine inside and walk paper money wheel group structure, the first roller set including note-twisting wheel, the second roller set and be located between note-twisting wheel and the second roller set;
Angle adjusting mechanism, makes the engaged wheel in described first roller set adjustable relative to the position of its driving wheel, realizes different entering paper money position by adjustment engaged wheel and the relative angle between driving wheel, thus obtains different entering paper money track;
High speed camera, is crossing the athletic posture in paper money process for catching bank note;
Spotlight, for guaranteeing that described high speed camera can capture picture rich in detail;
PC, processes for the picture adopted described high speed camera, draws bank note movement locus, and simulates the whole bank note displacement curve figure crossing paper money process.
2. a kind of currency counting and detecting machine according to claim 1 crosses the experimental provision of paper money motion state visual research, it is characterized in that: described PC is configured with autocad software and matlab software, wherein, utilize the picture editing function of autocad software to carry out mark to the picture that high speed camera imports to measure, its process is: in the master menu hurdle of autocad software interface, select the reference of insertion-raster image, image file dialog box can be ejected, after finding the picture needing to measure to confirm, formulate insertion point, get final product insert pictures, then by SC the Scale command adjustment size of software, by Image Adjusting ratio to mechanism's physical size, the mapping function recycling software is afterwards demarcated bank note leading edge point, circulation like this, a large amount of high speed camera picture can be inserted, realize the object that in setting insertion point, scaling, acquisition picture, physical dimension is equal with practical structures size, and in the process editing and processing is carried out to picture, mark a large amount of bank note front ends calibration point, their distribution is roughly a curve, has so just reappeared the track that paper money crossed by bank note, thus obtains the displacement variable between the displacement of bank note leading edge end points relative reference initial point and each leading edge end points, utilize matlab software programming to realize the least square method of curve, experimental data is processed, and then obtain the whole bank note displacement curve figure crossing paper money process.
3. a kind of currency counting and detecting machine according to claim 1 crosses the experimental provision of paper money motion state visual research, it is characterized in that: the relative angle that described angle adjusting mechanism adopts three angle index flaps to come in accurate adjustment first roller set between engaged wheel and driving wheel, described engaged wheel is positioned at the below of driving wheel, and be assemblied on driven shaft, described driving wheel is assemblied on main drive shaft, and described relative angle is engaged wheel axis and the corner dimension through between the vertical curve of driving wheel axis, wherein, described three angle index flaps have two pieces of symmetries to be located at inside the biside plate of visualization point currency examine model machine, every block three angle index flap is provided with drive shaft bearing pilot hole successively from top to bottom from drift angle, driven shaft bearing pilot hole, pin positioning runner, the biside plate of described visualization point currency examine model machine is provided with symmetrical pin-and-hole and the chute for the slip of driven shaft end bearing, described two piece of three angle index flap is fixed in the bearings at both ends of main drive shaft by respective drive shaft bearing pilot hole, described driven shaft is arranged on two or three angle index flap by its bearings at both ends, described three angle index flaps can main drive shaft axis be that rotation center deflects, thus drive engaged wheel skew, and then realize regulating the relative angle between engaged wheel and driving wheel, described pin-and-hole is suitable to pin positioning runner corresponding separately, after regulating the relative angle between engaged wheel and driving wheel, can be positioned adjusted good deflection angle by the tommy inserted in pin-and-hole and pin positioning runner, fixed triangle scale flap.
4. a kind of currency counting and detecting machine according to claim 3 crosses the experimental provision of paper money motion state visual research, it is characterized in that: the range of deflection angles of described three angle index flaps is deflection 10 °.
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| CN108877032A (en) * | 2018-06-01 | 2018-11-23 | 山东女子学院 | A kind of cash inspecting machine twirl paper money device buffering means for correcting |
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| CN104361678B (en) | 2017-03-29 |
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