CN104952141A - Bank-note identifying and receiving apparatus with galvanometer scanning - Google Patents
Bank-note identifying and receiving apparatus with galvanometer scanning Download PDFInfo
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- CN104952141A CN104952141A CN201410119823.6A CN201410119823A CN104952141A CN 104952141 A CN104952141 A CN 104952141A CN 201410119823 A CN201410119823 A CN 201410119823A CN 104952141 A CN104952141 A CN 104952141A
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Abstract
The invention discloses a bank-note identifying and receiving apparatus which employs a light beam focusing and scanning device with a curved-surface axial galvanometer projecting structure to scan and analyze spectrum and patterns. The bank-note identifying and receiving apparatus further comprises a bank-note transmission system with a cylindrical surface and a cofrequency inhaling high-speed micro-vibrating bank-note transmission structure.
Description
Art
Present invention relates in general to a kind of use and have the light beam focusing scanning device of the axial galvanometer projective structure of curved surface to carry out the paper money recognition receiving trap of spectrum and graph scanning analysis, this device also has the paper currency transmission system of cylindrical shape and the same micro-paper currency transmission structure of shaking of air-breathing high speed frequently.
Background technology
1. laser galvanometer is a kind of scanning galvanometer being used in laser industry, and its professional term is called Galvo scanning system.So-called galvanometer, can be referred to as reometer meter again, its mentality of designing follows the method for designing of reometer completely, and eyeglass instead of indicator, and the signal of probe is replaced by the direct current signal of computer-controlled-5V-5V or-10V-+10V.Laser galvanometer scanning system completes predetermined reflex action by the high speed swinging of two independent eyeglasses, realizes the fixed point projection of light.Laser galvanometer is mainly used in laser marking, body laser inner carving, light of stage control, laser boring, laser projection etc.Industrial high-precision laser galvanometer system is in order to accurately locate the device that have employed a lot of closed-loop control, and these are all quite expensive elements, if same device is used in Money receiver, finally the price of possibility Money receiver is several times as much as Vending Machine.Also there is a problem in this galvanometer, is exactly that projectional angle is smaller, and to the area that projection is larger, so projection distance will be very large.And these laser galvanometers do not need to collect feedback light information, and the shape that laser scans out is that wire is unfavorable for feedback light optical detection, Laser Focusing point is not in one plane but at a curved surface, cause difficulty to vernier focusing.And on cost, this system is of a great variety, various model output is less, without the accessory of large-scale production.This common laser scanning system is not suitable for Money receiver.
2. currency on the market identifies or receiving trap has a variety of automatically:
Have less expensive product only to verify by the presence or absence of Ultraviolet radiation by resolved fluorometric on the market, clearly this method is too simple, and accuracy rate is not high.Vending machine can not be used at all.
The comparatively ripe paper currency acceptor that uses of Vending Machine on the market, the scheme that optical identification aspect uses uses multispectral solid-state light emitting element to irradiate currency and receives feedback optical information by array CIS contact-type image sensor and super-sensitive photoelectric sensor, namely as gathered image information as scanner and analyzing.Although this kind of scheme comparative maturity, price is also quite expensive.Because it use multiple light-emitting component, multiple image or optical sensor, the motion by controlling precision electric motor is also needed to move bank note, also want while according to the motion of bank note while to perform an analysis calculating in conjunction with the optical information of above-mentioned complexity, so this also needs the microcomputer chip that an arithmetic capability is stronger.Such cost is just very high.The price of this type paper currency acceptor, usually all more than thousand yuan, even exceedes 20% of common Vending Machine cost.
3. holder of the patent right party controls the flat utility model patent " multifunctional laser scanning identifies money identifier automatically " (number of patent application: 00226791.8 patent publication No.: CN2445381) being first born in 2000-09-08 registration and proposes and can utilize Laser Focusing scanning paper currency, and spectral signature and stereosopic printing feature etc. the much information of bank note is obtained by the reflected light after laser scanning confocal, again according to the comparative analysis computing of the electric signal of these features, realize the object of banknote validation, and devise a kind of device that can realize this function accordingly.But, this device be scanning system based on similar CD-ROM device, that is to say that whole laser beam emitting device moves and focus on (this high speed machine system be adopt be the high speed reciprocating structure of CD-ROM device or hard disk) along with mechanical system at a high speed.
(description in abridgments of specifications is: a kind ofly adopt laser scanning and computing machine to carry out automatically contrast the instrument identifying and process to true and false paper money graphic feature information.Particularly automatically to differentiate currency figure various lines fine feature information, be aided with the multifunctional detecting device of magnetic, fluorescent effect, papery.)
The concrete practical project organization of this patent this device unexposed, implements quite difficulty.Even so, with regard to its scheme: although the laser scanning system of this similar CD-ROM device does not need to use imageing sensor, but this structure all makes removable form laser optical element and all parts of sensor, so moving part quality is very large, and have a large amount of wires to be connected to moving part, and the move mode used is numerical-control motor, consequently mechanism is complicated, sweep velocity and hydraulic performance decline, cost there is no too big difference with using the paper money recognition verifying attachment of imageing sensor.As for the scheme of the extraction bank note stereosopic printing information described in its literary composition, although possible in theory, there are no the utilization scheme of practicable.
4. the paper currency transmission system in paper currency acceptor mainly uses the component combinations such as numerical-control motor, transport tape, rolling wheel, friction pulley and pinch roller to get up to transmit the device of currency.Although this class device technology maturation, parts are a lot, and required precision die is also a lot, and assembling procedure is also many, and because of complex structure design difficulty also just large.Be exactly generally speaking that cost compare is high.
beneficial effect
The present invention's light beam focusing scanning instead of the element of these high costs of imageing sensor of existing ripe Money receiver, combines the advantage of galvanometer and CD-ROM device scanning laser head assembly, reduces the requirement to microprocessor chip or micro computer.Therefore, the present invention significantly reduces the cost of Money receiver, and its cost is even less than 10% of existing Money receiver.Its speed is faster, discrimination is more accurate, can extract the more optical signature of currency to be tested, comprises multiple spectrum and the distributed intelligence of stereosopic printing letter etc.
Summary of the invention
The present invention is the same with the principle of the system described in background 3, is all to utilize light to focus on to scan, and obtains bank note feature to be verified, then make statistical study comparison by light signal fed back.But the scheme adopted is that galvanometer focuses on light beam the scanister combined, because galvanometer system is the separate electromagnetic mechanism swung at a certain angle, and galvanometer itself there is no the connections such as wire, sweep velocity is very high, and problem is the focusing difficulty of projecting laser and feedback light.And the light beam focusing scanning device in CD-ROM device, technology maturation, production scale is huge, and accessory cost is very low, and the focusing technology of projecting laser and feedback light is ripe, and both combinations can realize high speed currency scanning.
The present invention applies above-mentioned two kinds of systems by particular design simultaneously and carries out optical focus scanning and verify bank note by feedback light spectrum and distribution, and according to banknote validation need improvement has been made to galvanometer system, and the galvanometer system after this kind of improvement and paper currency transmission device are combined, and further propose a kind of method and apparatus, the optical information beyond spectral signature can be obtained, comprise stereosopic printing distributed intelligence.And propose the method utilizing these optical information to verify.
Specific as follows:
The present invention proposes a kind of paper money recognition receiving trap, comprising: galvanometer device, paper currency transmission device, beam projection feedback system; Described galvanometer rotor shaft direction is consistent relative to the moving direction of paper currency transmission device with bank note; Described beam projection feedback system, to galvanometer device outgoing beam, accepts the feedback light of galvanometer device simultaneously.
The invention allows for: the rotating shaft of described galvanometer is consistent with the incident light axle center of beam projection feedback system; Described galvanometer becomes miter angle with the rotating shaft of galvanometer.
The invention allows for: the mirror shape of described galvanometer is circular cone tangent plane; The projection light incidence point of axle center on galvanometer minute surface of described circular cone.
The invention allows for: described paper currency transmission device has the face of cylinder, described axle center, the face of cylinder is consistent with galvanometer rotating shaft.
The invention allows for: described paper currency transmission device has the bank note drive mechanism pointing to galvanometer rotating shaft.
The invention allows for: described beam projection feedback system is launched and accepted the light beam of multiple wavelength;
The invention allows for: described beam emissions feedback system has automatic focusing system; Light beam focuses on bank note face.
The invention allows for: described beam emissions feedback system has three-dimensional sensor, two-dimension photoelectric sensor array symmetrical centered by described three-dimensional sensor
The invention allows for: described beam emissions feedback system has chromatographic detection apparatus, and chromatographic detection apparatus comprises: reflection grating, convex lens and linear photosensor arrays.
The invention allows for: described beam emissions feedback system has air-breathing vibration transmission device, involving vibrations panel and air suction structure; Described vibration panel and air suction structure are with identical frequency collaborative work.
Accompanying drawing explanation
Fig. 1 is that circular arc focuses on projection surface schematic rear view
Fig. 2 is two kinds of mode side views of galvanometer light inlet
Fig. 3 is galvanometer system structure side view
Fig. 4 is multiband beam projection feedback system schematic diagram
Fig. 5 is light reflection mirror face portion part-conical cross-sectional shapes schematic side view
Fig. 6 is face of cylinder paper currency transmission system
Fig. 7 is the flat micro-paper currency transmission system side cross-sectional, view of shaking of same frequency air-breathing high speed
Fig. 8 is displacement detector rear view
Embodiment
The present invention includes: galvanometer device, paper currency transmission device and beam emissions feedback system.
Laser galvanometer scanning system (or tilting mirror) is known technology.Its structure and principle are as described in background one.
The projection surface of the present invention to laser galvanometer (or tilting mirror) system being applied to paper money recognition receiving trap has made improvement.As shown in Figure 1, what conventional laser galvanometer scanning system (1) adopted usually is flat projection surface (2), flat projection surface is because the length of different light paths is inconsistent, cause focus (3) not at grade, during result Laser Focusing, need significantly zoom.And the semicircle pillar projection surface (4) that use of the present invention is concentric with light path rotating shaft, the amplitude of zoom significantly reduces, and corresponding zoom rate significantly increases.And because the luminous point of projection is exactly directly polar coordinate system, be transformed into the planimetric coordinates of rectangular coordinate system without the need to the pendulum angle from polar coordinate system as flat projection surface, the control of galvanometer system and debugging difficulty are significantly reduced.
As shown in Figure 2, the direction that the laser beam of the laser instrument of conventional galvanometer injection enters galvanometer is radial light inlet (1), and namely cylindrical end face radius of a circle or diametric(al) inject injection.But after projection surface changes Cylinder Surface into, both sides, face of cylinder projection causes obstacle to light path.If the words away from the face of cylinder are brought up in axle center, except increasing equipment volume, light path also can be elongated, the flux that the feedback light of scattering is turned back along original optical path will significantly reduce, the light signal fed back of scattering so just can only be collected along bypass, can cause complex structure like this, detectability declines, or needs to use photoelectric sensor that is more sensitive and high cost.So galvanometer system of the present invention employ axial light inlet (2) enter angular and entrance positions, be just in time the center line of galvanometer rotating shaft.In order to realize spindle central axis light inlet, the minute surface of the catoptron used becomes miter angle with vibration spindle central axis, and mirror center and central axes.Such laser in the focusing incident point of projection surface just in time on the surface in the forward cross section of Cylinder Surface.In addition in order to collect more reflected light, catoptron should when not affecting rotation, and area is large as much as possible.
As described in background one, industrial precision laser galvanometer system price is expensive.But fortunately, currency accepters just needs the optical feedback information obtaining intensive analyzing spot array, and it does not need stably the luminous point of beam projection to be fixed on some accurate positions.It it is desirable that light beam focus on projection luminous point with uniform speed and be inswept note surface to high-density.Because bank note inherently has border and figure, can be used as the use of the initial location of photosignal.So, here it is desirable that the fast and uniform galvanometer system of a kind of speed.The present invention devises a kind of simplification structure accordingly, this galvanometer system, as shown in Figure 3, rotating shaft (9) is fixed on bracing frame (4), there are two bearings (8) between bracing frame and rotating shaft, rotating shaft has strong magnets (3) between two bearings.External stability have stacked multiple coils (2), in parallel on homonymy coil circuit, the effect of multiple coil reduces induction electromotive force.Then rotating shaft also has code-wheel (5), code-wheel can with axis of rotation, and code-wheel here requires lower, and be common single-phase photoelectric coded disk, available laser printer prints on hard transparent film.Photoelectric coding web there is optical sensor (10) scale of code-wheel can be detected, thus position and test the speed.Photoelectric coded disk there is the fan-shaped scale of equalization that angularly light and shade replaces, and have two large fan-shaped scales at one-sided end of travel.Large fan-shaped scale can allow micro computer know that code-wheel goes to end of travel by calculating.Shaft end has the reflective mirror (6) becoming miter angle (other angles are also passable, but 45 degree is best) with axis.Multiband beam projection feedback system (7) outgoing laser beam, enters projection surface after laser beam (11) reflection.
Here multiband beam projection feedback system (7) is a kind of auto-focusing light source that can accept feedback light, and the laser head of principle and structure and CD-ROM device is similar.The large-scale production of this laser head, has on the market and sells various forms of CD-ROM device laser head, and price is very cheap, just can buy less than 20 yuan.The accessory of these laser heads can use in the system of the present invention, and multiband beam projection feedback system (7) of the present invention has made following improvement to this laser head, as shown in Figure 4:
Light required for paper money recognition spectral analysis has several wavelength period, has ultraviolet, infrared and visible ray, and the light of this several different wavelength is by conputer controlled alternation.If use laser beam merging apparatus that system then can be caused quite complicated.Because the light of each wavelength does not need to work simultaneously, so one can be arranged have the light path adjustment servo-drive system that can turn to plane mirror with rapid adjustment light path.So just can omit a large amount of dissimilar customization optical elements.The light that the circuit board (1) posting light emitting diode (or laser diode) sends becomes directional light by collimation lens (2).Because the position of light emitting diode and collimation lens is through accurate Calculation, its directional light produced is beaten on the same position of servo reflector (3), reflect and pass through light shaping orifice plate (4), light beam narrows, from the injection of fixing position.Light beam is divided into two after reflexing to spectroscope (17) by catoptron (5).
1. wherein a part of incident light electric transducer (6), by detecting the intensity of incident light, can adjust servo reflector (3), making its folded light beam perpendicular to shaping unthreaded hole plate (4).The injection angle of the light beam of the different wave length finally making different light emitting diode launch has consistance.
2. another part enters the directional light autofocus system similar with above mentioned laser head.Successively by collimation lens (13), servo-focus lens (14), axial catoptron (15), bank note mirror image (16), the light then focused on returns to spectroscope (17) by diffuse reflection.Then inject on the photosensor arrays of circuit board (10) respectively by spectroscope (12) and reflection grating (11).
The sensor one of feedback light has 4
1. verticality sensor (6) irradiates the electric current that produces of light and the intensity that obtains irradiation by amplifying, when electric current is maximum, and beam orthogonal.Verticality sensor (6) and servo reflector (3) adjust the angle of light beam jointly.
2. inclined-plane sensor (7) is a kind of centrosymmetric photosensor arrays, known the reflection angle of focal beam spot on bank note by the intensity of feedback light in photoelectric sensor display all directions or region, thus understand the stereosopic printing information of bank note.
3. focus sensor (8) is similar with the focus sensor of CD-ROM device, according to the light beam of the cylindrical lens difference at transverse axis and vertical pivot focus point, and focus condition detected, and adjust servo-focus lens (14), and then light beam is focused on bank note.
4. chromatogram sensor (9) is a kind of linear photoelectric sensor, and the light beam of different wave length impinges upon in reflection grating, the reflection of different angles occurs, and then is radiated at the diverse location of linear photoelectric sensor through convex lens again.Thus understand, the roughly wavelength kind of feedback beam and scope.Such as, the fluorescent wavelength ranges that bank note is subject to the bank note fluorescent ink after UV-irradiation is analyzed.
Here as CD-ROM device laser head, polarized light beam splitter and 1/4 wavelength plate is not used, because these need the light beam coordinating specific wavelength.The present invention is applied to multi-wavelength, so directly use common aluminizer spectroscope.
The concrete scheme obtaining bank note stereosopic printing information is: note surface has the pattern of fine rough similar embossment, when the slightly-inclined face of Laser Focusing point focusing in different gradient, the intensity of the reflected light of different directions is inevitable different, inclined-plane sensor (7) in photosensor arrays, certain photoelectric sensing region detection wherein to variation of light intensity must vary, by when light beam focusing scanning, utilize COMPREHENSIVE CALCULATING and the statistical study of the difference between the different variable quantity of these corresponding light electric signal, such as add up the frequency disribution of extreme value on bank note on the grid of different divided area of the difference between different variable quantity, the respective Density Distribution of concavo-convex micro-pattern of bank note difference trend can be assessed, thus verify bank note by stereosopic printing information.The mathematical procedure of this analysis is the same with the process of voice print analysis and identification, is all to carry out Fast Fourier Transform (FFT) (FFT) to waveform, then takes statistics and Intelligent Recognition according to obtained spectrogram.It is pointed out that the rotation along with galvanometer, the mirror image being looped around the several photoelectric sensors around laser head is also rotate around mirrored center, needs to revise during calculating.
Mirror image for above-mentioned photoelectric sensor rotates the problem causing needs to calculate correction around mirrored center, in order to reduce the complexity of calculating, whole galvanometer optical feedback system needs a kind of symmetric design, and namely reflected light light path is symmetrical around the laser beam of injection.As shown in index path Fig. 5, the shape of the reflective mirror of reflective mirror (2) should be: the tangent plane of mirror plane and the reflected light cone (1) symmetrical along projecting laser bundle axle center (3).The mirror portion that reflective mirror exceeds this tangent plane should shield.
Paper currency transmission system also coordinates the cylindrical shape in laser projection face to make change.The system of transport tape, rolling wheel, friction pulley and pinch roller etc. that so usual paper currency transmission system uses also will make corresponding change of shape.These all mechanical parts all will make distortion around axle center and projecting plane.Remainder, as infrared emission sensor region, magnetic induction region, photosensor region all will make distortion around projecting plane.Transmission system as shown in Figure 6, transmission zone face (1) is concordant with the face of cylinder (2), and transmission zone face (1) is towards the axle center of the face of cylinder (2).4, front and back pinch rollers (3) are also pressed in transmission zone face (1) with same angle.
Bank note reverse side context of detection, for cost-saving, (there is light emitting diode (5) at the back side can to adopt simple linear checking, the light sent is in bank note backside reflection, on bank note, the reflected light of certain point is having the upper imaging of the photoelectric sensor (4) of condenser lens, by the motion of bank note thus, obtain towards the printing information of the line of in bank note direction of motion) verify that it has corresponding printed patterns.To the reason of entire paper coin checking be not: suppose that a counterfeit money technically can be mixed the spurious with the genuine in front, so take same technology to be also easy at counterfeit money reverse side, so there is no need the whole reverse side checking of bank note.Required is whether its reverse side of checking has damaged putting up, and prevents from accepting damaged bank note.
In addition transmitting device transmission direction end pinch roller (3) slightly before position, flexible electromagnetism falls fork (6), bank note by time open, bank note, by rear closedown, prevents bank note from being fished out by fine rule.
Above-mentioned mechanical type structure is somewhat complicated, proposed heres a kind of device be called with the micro-paper currency transmission system of shaking of frequency air-breathing high speed.The simple cost of this system architecture is low.
The micro-paper currency transmission system of shaking of same frequency air-breathing high speed on the face of cylinder, as shown in side cross-sectional Fig. 7, has two cavitys, in order to produce the pressure generating chamber (2) of positive/negative pressure, with for the pressure distribution room (1) of transmission of pressure.
There is the piston calutron (8) producing vibration in pressure generating chamber (2), and intercept the piston sheet (10) of air, also have the venting channels (9) with outside air UNICOM.Pressure generating chamber (2) is divided into two parts in left and right by piston sheet (10).Because above-mentioned two cavitys are all semi-open, so impermeability aspect requires comparatively simple, here vibration velocity and the serviceable life of piston sheet is importantly improved, so here piston sheet (10) does not need to seal completely, piston sheet (10) and housing (13) are can be non-contacting.During work, piston calutron (8) vibration type piston sheet (10), makes pressure generating chamber (2) produce air pressure vibration; Air pressure vibration is discharged by venting channels (9) at its right part; Air pressure vibration is transmitted to pressure distribution room (1) by suction transmission channels (12) at its left part.Suction transmission channels (12) is a kind of one-way cock, so it only transmits suction to pressure distribution room (1).And the pressure in pressure generating chamber (2) can be led passage (11) off by another one-way cock and pressure and outwardly discharges.
Pressure distribution room (1) vibrates the air pressure that pressure generating chamber (2) produces to there being the treadmill (5) adsorbing micropore (3) in a large number evenly to transmit.Namely like this, when piston sheet (10) moves right that pressure generating chamber (2) produces negative pressure time, (5) will produce suction to treadmill; Namely, when piston sheet (10) is moved to the left that pressure generating chamber (2) produces malleation time, suction will disappear.
The main calutron (7) that treadmill (5) vibrates with generation is equally connected.The stiff end (4) of treadmill (5), is fixed on motion bar (6).During work, main calutron (7) makes treadmill (5) produce displacement vibration by sliding active bar (6).
The process of transmission is exactly the process of piston calutron (8) and main calutron (7) collaborative work.When the direction of vibration of treadmill (5) is consistent with the transmission direction of bank note, treadmill (5) produces suction, and suction makes to produce friction between bank note and treadmill (5), and bank note is moved along transmission direction.When the direction of vibration of treadmill (5) is contrary with the transmission direction of bank note time, suction disappears and causes friction to reduce, and bank note is less by treadmill (5) impact, still roughly keeps original motion state.As long as two calutrons are with identical frequency vibration like this, bank note will move along transmission direction.Only need the direction of current changing one of them calutron under same frequency, just can change the transmission direction of bank note.
Have employed above-mentioned with frequently air-breathing vibration transmission device, its locator meams just and normal transmission device different.Normal transmission device is controlled by the displacement of numerical-control motor to bank note.This control mode significant discomfort contract is air-breathing vibration transmission device frequently.Here can adopt the mode of similar laser mouse to locate.Laser mouse determines displacement by the comparison of the micro-photographic/optical image of high speed or laser interference image, can obtain the displacement information of two dimensions or both direction simultaneously.Laser mouse is quite ripe scheme, and its element is quite cheap and easy acquisition also.As shown in elevational sectional view 8, bank note is positioned in the middle of gap narrow between optical devices district (1) and transmitting device district (3), the installation site of this laser displacement inspecting device (2) in optical devices district (1) towards bank note.If from the side, this laser displacement inspecting device (2) has two one or two laser projection districts and is clipped in the middle, and two laser displacement inspecting devices detect bank note displacement jointly.So no matter how to move before and after bank note, have one of them laser displacement inspecting device the movement of bank note to be detected.In addition, the interference of the laser that laser displacement inspecting device sends to galvanometer optical system also should be noted that, the direction of the Laser emission of two laser displacement inspecting devices should back to the projection in zone of galvanometer optical system, and the distance that interval is large as far as possible, this needs the half of the minimum Paper Money Size detected apart from the chances are.
Claims (10)
1. a paper money recognition receiving trap, comprising: galvanometer device, paper currency transmission device, beam projection feedback system;
Described galvanometer rotor shaft direction is consistent relative to the moving direction of paper currency transmission device with bank note;
Described beam projection feedback system, to galvanometer device outgoing beam, accepts the feedback light of galvanometer device simultaneously.
2. device as claimed in claim 1, is characterized in that:
The rotating shaft of described galvanometer is consistent with the incident light axle center of beam projection feedback system;
Described galvanometer becomes miter angle with the rotating shaft of galvanometer.
3. device as claimed in claim 2, is characterized in that:
The mirror shape of described galvanometer is circular cone tangent plane;
The projection light incidence point of axle center on galvanometer minute surface of described circular cone.
4. device as claimed in claim 2, is characterized in that:
Described paper currency transmission device has the face of cylinder,
Described axle center, the face of cylinder is consistent with galvanometer rotating shaft.
5. device as claimed in claim 4, is characterized in that:
Described paper currency transmission device has the bank note drive mechanism pointing to galvanometer rotating shaft.
6. device as claimed in claim 1, is characterized in that:
Described beam projection feedback system is launched and is accepted the light beam of multiple wavelength.
7. device as claimed in claim 6, is characterized in that:
Described Laser emission feedback system has automatic focusing system; Light beam focuses on bank note face.
8. device as claimed in claim 7, is characterized in that:
There is three-dimensional sensor, two-dimension photoelectric sensor array symmetrical centered by described three-dimensional sensor.
9. device as claimed in claim 6, is characterized in that:
Have chromatographic detection apparatus, chromatographic detection apparatus comprises: reflection grating, convex lens and linear photosensor arrays.
10. device as claimed in claim 4, is characterized in that:
There is air-breathing vibration transmission device, involving vibrations panel and air suction structure;
Described vibration panel and air suction structure are with identical frequency collaborative work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410119823.6A CN104952141A (en) | 2014-03-26 | 2014-03-26 | Bank-note identifying and receiving apparatus with galvanometer scanning |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410119823.6A CN104952141A (en) | 2014-03-26 | 2014-03-26 | Bank-note identifying and receiving apparatus with galvanometer scanning |
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| CN104952141A true CN104952141A (en) | 2015-09-30 |
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| CN201410119823.6A Pending CN104952141A (en) | 2014-03-26 | 2014-03-26 | Bank-note identifying and receiving apparatus with galvanometer scanning |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI629504B (en) * | 2016-10-21 | 2018-07-11 | 揚明光學股份有限公司 | Light path adjustment mechanism and light path adjustment element |
| CN109758753A (en) * | 2019-03-05 | 2019-05-17 | 深圳市杰普特光电股份有限公司 | Golf marking device and its Vision imaging system, marking method |
| CN110900635A (en) * | 2019-12-27 | 2020-03-24 | 湖南万景台科技有限公司 | Scenic spot intelligent robot |
| CN116379971A (en) * | 2023-05-29 | 2023-07-04 | 华北理工大学 | Laser measuring device and measuring method for verticality of metal component |
-
2014
- 2014-03-26 CN CN201410119823.6A patent/CN104952141A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI629504B (en) * | 2016-10-21 | 2018-07-11 | 揚明光學股份有限公司 | Light path adjustment mechanism and light path adjustment element |
| CN109758753A (en) * | 2019-03-05 | 2019-05-17 | 深圳市杰普特光电股份有限公司 | Golf marking device and its Vision imaging system, marking method |
| CN109758753B (en) * | 2019-03-05 | 2023-06-20 | 深圳市杰普特光电股份有限公司 | Golf ball marking device, visual imaging system thereof and marking method |
| CN110900635A (en) * | 2019-12-27 | 2020-03-24 | 湖南万景台科技有限公司 | Scenic spot intelligent robot |
| CN116379971A (en) * | 2023-05-29 | 2023-07-04 | 华北理工大学 | Laser measuring device and measuring method for verticality of metal component |
| CN116379971B (en) * | 2023-05-29 | 2023-08-11 | 华北理工大学 | Laser measuring device and measuring method for verticality of metal component |
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