Embodiment
As shown in Figure 1; The coin checkout equipment that the utility model provided comprises the transmission portion that is used for transmitting coin, the shoot part that is used for the coin of transport process is carried out to picture; And the light source portion that is used for providing the light of suitable angle and intensity, and be used for the electrical measurement parameter detecting portion that the coin electromagnetic parameter detects to shoot part.The coin checkout equipment that the utility model provided also comprises the control system that is used to control transmission portion, shoot part and light source portion.
Transmission portion comprises the driving belt group that is made up of three belts and goes out the coin plate.According to the direction of transfer of coin, the driving belt group comprises the front feed belt 9 that is positioned at into the coin mouth successively, is arranged in the Two surface leather belt 8 of the arc of belt 9 one sides (left side of Fig. 1), and the reverse side feed belt 10 that is arranged in the opposite side (right side of Fig. 1) of belt 9.Go out the downstream on the coin direction of transfer that the coin plate is connected reverse side feed belt 10.
Front feed belt 9 has horizontal part, curved portions and oblique portion, and the starting point of horizontal part is positioned at the below into the coin mouth, and arc part is in the downstream on the coin direction of transfer of horizontal part.Horizontal part has formed positive horizontal channel 22, accepts from the coin of going into the coin mouth, and has enough length to adapt to shoot part and light source portion requirements of one's work.When coin falls on the front feed belt 9 (going into the coin mouth also can be that other makes coin pursue a piece defeated coin device that gets into front feed belt 9); Because frictional resistance can rapid certain one side (front) mode up with coin lie low, and does not have the slip of rotation or phase frontal feed belt 9.
The curved portions of front feed belt 9 with the mode tangent with horizontal part, is connected to the downstream on the coin direction of transfer of horizontal part.The Two surface leather belt 8 of arc just in time matches with the curved portions of front feed belt 9, forms the curved channel 23 with the horizontal part smooth connection.Thus, coin is carried to curved portions from horizontal part, gets into curved channel 23.Because front feed belt 9 is opposite with the traffic direction of Two surface leather belt 8, one is that clockwise another is exactly counterclockwise, so just can make coin in curved channel 23, is being held under the arm and the rapid curved channel 23 that passes through by front feed belt 9 and Two surface leather belt 8 folders.Owing to be that curved channel 23 is arc (being semicircular in Fig. 1), coin still faces up when getting into, and just is flipped to when going to the terminal point of curved channel 23 to have faced down.At this moment, coin is flipped to and is reverse side (side opposite with aforementioned front) state up.
Form rising passway 24 between the oblique portion of front feed belt 9 and the reverse side feed belt 10.Rising passway 24 is connected the terminal point of curved channel 23, and extends to the starting point next door of the horizontal channel 22 of horizontal part.Front feed belt 9 is opposite with the traffic direction of reverse side feed belt 10, and therefore, the coin after being reversed is just keeping reverse side state up after getting into rising passway 24 from curved channel 23, is transported on the positive horizontal channel 22.
Reverse side feed belt 10 has rake and the horizontal rear portion that is complementary with front feed belt 9.Aforementioned rising passway 24 is established and is formed by the oblique portion of front feed belt 9 and the rake folder of reverse side feed belt 10.Horizontal rear portion then is formed on the opposite side (in Fig. 1, the traffic direction of coin is left, and then the starting point at horizontal rear portion is located in the right side into the coin mouth) of coin mouth, and maintenance and front feed belt 9 horizontal alignments, forms reverse side horizontal channel 25.Coin gets into reverse side horizontal channel 25 from rising passway 24 thus.
Go out the destination county that the coin plate is connected reverse side horizontal channel 25, and have a certain degree, so that after coin is slipped to out the coin plate on the horizontal rear portion of feed belt 10 from the negative, lean on self gravitation and along going out the downward landing of coin plate with reverse side horizontal channel 25 shapes.
In the present embodiment, belt 8 turns clockwise, and belt 9 is rotated counterclockwise, and belt 10 turns clockwise.Because Two surface leather belt 8 is identical with turning to of reverse side feed belt 10, can be a belt therefore, just there is not joint between such two belts, coin to be detected is not easy to be stuck.
Introduce the concrete structure of shoot part and light source portion below.
Shoot part comprises front shoot part, reverse side shoot part and goodness of fit shoot part, and corresponding, light source portion also comprises positive light source portion, reverse side light source portion and goodness of fit light source.
Front shoot part and positive light source site are used for the front of coin is taken directly over the horizontal part of front feed belt 9.The front shoot part comprises direction detection camera 1, stealthy engraving detection camera 2 and side detection camera 3.Positive light source portion comprises direction detection light source (4,7) and stealthy engraving detection light source 5.Particularly; 22 the top along the horizontal channel; From going into the starting point of coin mouth to curved channel 23; Be disposed with direction detection camera 1 and corresponding direction detection light source group (4,7), stealthy engraving detection camera 2 and corresponding stealth engraving detection light source 5, and side detection camera 3 and corresponding side detection light source 6.Direction detection camera 1, stealthy engraving detection camera 2 and side detection camera 3 are area array cameras.
Direction detection camera 1 is closed use with the direction detection light source assembly that is positioned at its below.Direction detection light source group comprises first light source assembly 4 and secondary light source assembly 7.First light source assembly 4 is between secondary light source assembly 7 and direction detection camera 1.First light source assembly 4 includes lens (semi-transparent semi-reflecting lens), and secondary light source assembly 7 is middle empty annular light source.The below of direction detection camera 1 can be provided with a light source assembly, also a plurality of light source assemblies can be set.Used light source can be selected according to the difference of coin defective, like coaxial light source, pointolite, line source, area source, directional light etc.Under the situation of using Different Light, utilize first light source assembly 4 different with the image effect that secondary light source assembly 7 obtains.
First light source assembly 4 is cooperated by coaxial light source and semi-transparent semi-reflecting lens, makes the light direct projection of sending under light source assembly 4.When coin arrive light source assembly 4 under the time, the light that first light source assembly 4 sends can shine on the coin, direction detection camera 1 collects first image that the light that sent by first light source assembly 4 forms, with the surface quality of judgement coin.Secondary light source assembly 7 is made up of annular light source, and its irradiate light of sending is to coin, and direction detection camera 1 collects second image that the light that sent by secondary light source assembly 7 forms.First image that obtains according to direction detection camera 1 and with second image, can determine the placing direction after coin enters into horizontal channel 22.In whole belt transmittance process, the placing direction of coin can not change.
First image is the direct light image, and is as shown in Figure 3, but the direct light image can't be seen surface crater clearly.Second image is the ring light pattern, can the edge of coin shown very clear, can be used for detecting the pit on coin surface.Because coin is constantly moving, thus in the gatherer process of first image and second image, direction detection camera 1 stroboscopic, first light source assembly 4 is lighted respectively with secondary light source assembly 7, promptly alternately lights.
In addition, direction detection camera 1 can adopt the area array cameras of high pixel, so that demonstrate the micro text that is easy to distinguish in the pattern of the front side that obtains.
Stealthy engraving detection camera 2 cooperates with stealthy engraving detection light source 5, can obtain the hidden pattern of coin.Stealthy engraving detection light source 5 determines picture quality with the distance of coin.
Stealthy engraving detection light source 5 is one group of low angle annular light source, is made up of at least 12 sections circular arc lamps 40.The startup of every section circular arc lamp 40 is controlled by control system, and every section circular arc lamp 40 can independently be lighted.The image that direction of passage detection camera 1 obtains with the direction of confirming coin after, control system is according to the placing direction of coin, determines one section circular arc lamp 40 on the specific direction at coin (be coin right-hand) in Fig. 4, and starts this section circular arc lamp 40.Like this, stealthy engraving detection camera 2 just can obtain just observable stealthy carved image of visual angle, right side, the right side view picture of the stealthy engraving of as shown in Figure 4 having " Cathay " and the island of Taiwan pattern.Similarly; By of the startup of control system control correspondence at one section circular arc lamp 40 of coin left; Thereby stealthy engraving detection camera 2 obtains just observable left side view picture of visual angle, left side, the Taiwan commemorative coin left side view picture of the stealthy engraving of " people's peace " and plum blossom design of as shown in Figure 5 having.
During though leading portion is described be start the coin left or right-hand on circular arc lamp 40, the circular arc lamp 40 of startup also can be not at the coin left or right-hand circular arc lamp 40.Because at present visible on the market coin hidden pattern is provided with about all being, so need start the circular arc lamp 40 on the left and right directions of coin respectively.If but hidden pattern is positioned on the above-below direction of coin, just need to start the circular arc lamp 40 above or below the coin, from the above-below direction polishing.
Confirm the stealthy stroboscopic number of times of carving detection camera 2,12 according to the quantity of hidden pattern, to take several hidden patterns corresponding with the quantity of hidden pattern.According to the direction of coin on belt and the direction setting of hidden pattern, from annular light source (stealthy engraving detection light source 5), select to be positioned at the circular arc lamp 40 of coin respective angles and to start.If hidden pattern is left side view picture or right side view picture, then control system starts the left side of the direction be positioned at coin or one or more circular arc lamps 40 on right side, to look light image or light image is looked on the right side in a left side that obtains coin; If hidden pattern is side elevation view picture or underside view picture, then control system starts the upside of the direction be positioned at coin or one or more circular arc lamps 40 of downside, with obtain coin on look light image or under look light image.
If one piece of coin has several hidden patterns, and the direction setting of hidden pattern is not simultaneously yet, then according to the direction setting of each width of cloth hidden pattern, starts different arcs lamp 40 respectively and lights, and is that each width of cloth hidden pattern is taken piece image.As shown in Figure 6; If the image that direction detection camera 1 is taken is confirmed the direction (arrow in Fig. 6 shown in direction) of coin at clockwise 45 degree of front feed belt 9; And hidden pattern is the left side view picture; So just start the circular arc lamp 40 in coin place direction (direction shown in the arrow among Fig. 6) left side, promptly be arranged in one or more snippets circular arc lamp 40 of the upper left semicircle of Fig. 6 arrow.Start circular arc lamps 40 such as 1 section, 2 sections, 3 sections or 6 sections all can, but it is higher to start the brightness of 2 sections or 3 sections circular arc lamps 40, image effect is better.If hidden pattern is the side elevation view picture, then start the circular arc lamp 40 of the top of coin place direction, i.e. arrow and the round locational circular arc lamp 40 that intersects in Fig. 6.
Though adopt circumference uniform distribution and interconnective 12 sections circular arc lamps 40 in the utility model, according to the actual requirements or result of use can select the multi-section circular arc lamp 40 of circumference uniform distribution, for example 4 sections, 8 sections or 16 sections circular arc lamps 40 for use.The center of the coin residing scope on belt on corresponding front feed belt 9 in the center of circular arc lamp 40 or the reverse side feed belt 10.The light source that is provided with like this helps stealthy engraving detection camera 2,12 and shoots high-quality hidden pattern.
Side detection camera 3 cooperates with corresponding side detection light source 6, can obtain coin side pattern.In the patent No. is the Chinese invention patent of ZL 200410020692.2, introduced relevant technical scheme, the lens of a special construction have wherein been arranged below the detection camera of side, just specifically do not introduced at this.
The structure of reverse side shoot part and reverse side light source portion is described below.
Reverse side shoot part and reverse side light source site are used for the reverse side of coin is taken directly over the horizontal rear portion of reverse side feed belt 10.The reverse side shoot part comprises direction detection camera 11 and stealthy engraving detection camera 12.The reverse side light source portion comprises direction detection light source (14,17) and stealthy engraving detection light source 15.Particularly; Above reverse side horizontal channel 25; Along from going into the coin mouth (promptly to the direction of the starting point that goes out coin plate 26; Traffic direction along coin), be disposed with direction detection camera 11 and corresponding direction detection light source group (14,17) and stealthy engraving detection camera 12 and corresponding stealth engraving detection light source 15.Direction detection camera 11 is an area array cameras with stealthy engraving detection camera 12.
Behind coin process curved channel 23 and the rising passway 24; Arrive reverse side horizontal channel 25. on reverse side horizontal channel 25; Coin is in the direction after the upset, promptly the reverse side of coin upwards (when entering into positive horizontal channel 22 from going into the coin mouth with coin face up in the opposite direction towards).Under such state, the direction detection camera 11 that is positioned at 25 tops, reverse side horizontal channel can be taken the direct light image of verso, can obtain the ring light image by annular light source 17 equally, thereby the direction after the coin upset is decided.In addition, be positioned at the stealth engraving detection camera 12 of 25 tops, reverse side horizontal channel, under the irradiation of stealth engraving detection light source 15, light image is looked on the left side that can obtain the coin reverse side and light image is looked on the right side.Its principle and stealthy engraving detection camera 2 cooperates a left side that obtains the front side to look light image and the right side with stealthy engraving detection light source 5 to look the principle of light image identical, just do not given unnecessary details at this.
Goodness of fit shoot part comprises goodness of fit detection camera 18 and level crossing 19,20, and goodness of fit light source portion comprises goodness of fit light source 30.As shown in Figure 2, light source 30 is in goodness of fit detection camera 18 and go out between the coin plate 26, is the coaxial light source that axes alignment goes out the coin board plane.Goodness of fit detection camera 18 is a line-scan digital camera, is positioned at a side of coin plate, for example the left side.The shooting direction of goodness of fit detection camera 18 is perpendicular to the moving direction of coin.
With the relative opposite side of a side that is provided with goodness of fit detection camera 18 that goes out coin plate 26, be placed with two respectively with go out the level crossing 19,20 that coin plate 26 forms 45s and 315 ° of angles.Two place's level crossings 19,20 and go out coin plate 26 shapes are in angle of 45 degrees respectively.Go out the slit 26a that has on the coin plate 26 perpendicular to the coin moving direction.The light that sees through in the slit 26a can be radiated on the level crossing 19, thereby demonstrates the image that is attached to out the one side (being the front of coin) on the coin plate 26 of coin.
In the transmission course of coin, as line-scan digital camera, goodness of fit detection camera 18 can obtain the image of the pro and con of coin through the reflection of level crossing 19,20.More than 18 scanning of goodness of fit detection camera to obtain the complete coin pros and cons image of a pair, sends to control system.Control system can obtain the coin pros and cons goodness of fit through the pros and cons image comparison, distinguishes thereby carry out the true and false.
In sum, coin gets into the coin checkout equipment that the utility model provided by going into coin mouth 21, arrives the top of front feed belt 9.Drive coin motion of the left side in Fig. 1 in positive horizontal channel 22 by front feed belt 9.During through direction detection camera 1, know the direction (position) of front side on front feed belt 9; During through stealth engraving detection camera 2, control system is calculated and is also opened the corresponding one section circular arc lamp 40 that is positioned at coin left side or right side according to the direction of known front side on front feed belt 9, thereby detects the hidden pattern of front side.Coin through side detection camera 3 after, arrive in the curved channel 23 of upset belt 8 and 9 clampings of front feed belt.
Through behind the curved channel 23, coin gets into by the rising passway 24 of front feed belt 9 with 10 clampings of reverse side feed belt.Then, coin is sent on the reverse side horizontal channel 25 that reverse side feed belt 10 provides.At this, coin is flipped to reverse side placing direction up.On reverse side horizontal channel 25, coin is through after the direction detection camera 11, and control system can be known the placing direction of coin reverse side on reverse side horizontal transmission belt 10.After coin is through stealthy engraving detection camera 12; Control system is according to the placing direction of coin reverse side on reverse side horizontal transmission belt 10; The circular arc lamp 40 on control coin left side or right side is opened; Thereby obtain the left view picture and the right view picture of coin reverse side, to detect the hidden pattern of coin reverse side.When coin is sent to out on the coin plate 26 by reverse side feed belt 10, coin utilizes self gravitation along going out coin plate 26 to lower slider.
Coin is through being positioned at the goodness of fit detection camera 18 of coin plate 26 1 sides.Goodness of fit detection camera 18 is utilized from the image of the pro and con of the coin of level crossing 19,20 acquisitions.The pro and con image that control system contrast goodness of fit detection camera 18 obtains, the checking true and false.Afterwards, coin arrives coin discharge output.
Afterwards the electromagnetic parameter pick-up unit can be set at goodness of fit pick-up unit (comprising goodness of fit shoot part and goodness of fit light source portion), this electromagnetic parameter pick-up unit is positioned at coin plate top.It can adopt existing mature technology (with reference to Chinese invention patent ZL 200810123603.5), has not just given unnecessary details at this.
On above-mentioned each camera next door an inspection rejects mouth can be set, there is a gas hole on inspection rejects mouth opposite, when detecting unacceptable product; Control system is given signal of air blowing portion; When defective coin arrived the inspection rejects mouth, gas hole blew out the air-flow of sufficient intensity, and coin is skidded off from the inspection rejects mouth.Certainly, also can be behind several cameras an inspection rejects mouth to be set, provide the inspection rejects signal after the testing result of comprehensive several cameras.Perhaps, an inspection rejects mouth is set behind all cameras, comprehensively the testing result of all cameras provides the inspection rejects signal.
Be appreciated that; If need not detect the hidden pattern of coin reverse side; Perhaps the reverse side of coin does not have hidden pattern; Only be formed with hidden pattern in the front side; So transmission portion can form from go into positive horizontal channel that the coin mouth begins to extend directly with go out the coin plate and be connected, detect that (being accomplished by direction detection camera 1 and corresponding light source assembly 4,7), stealthy engraving detect (being accomplished by stealth engraving detection camera 2 and corresponding light source 5), (being accomplished by side detection camera 3 and corresponding light source 6) and goodness of fit detection (by goodness of fit detection camera 18 and corresponding light source completion) are detected in the side thereby only carry out positive direction.But, face up and also have reverse side upwards owing to get into coin on the belt, need forwardly add one under the aforementioned situation that does not detect the coin aspect and make the consistent device of coin direction upset, so that the facing up of the coin on the positive horizontal channel towards being.
The direction detection camera 1 of this coin checkout equipment and 11 and corresponding direction detection light source; Under the control of control system; Not only can detect the direction of coin on belt, can also be through the analysis of image being known surface quality such as the unfilled corner that detects coin, cut, pit.Therefore the utility model true and false that not only can be used for coin detects, and also can be used for the inspection rejects, the online quality testing in mint of coin etc.
The goodness of fit detection camera 18 of this coin checkout equipment can be shot the pattern of front side and reverse side with goodness of fit detection light source ( level crossing 19,20).The pattern of control system frontal and reverse side compares.What this mode not only can be used to verify the coin true and false tests the coin device, also can be used for the quality of online detection coinage.
Above the coin checkout equipment that the utility model provided has been carried out detailed explanation.As far as one of ordinary skill in the art, any conspicuous change of under the prerequisite that does not deviate from the utility model connotation, it being done all will constitute to the utility model infringement of patent right, with corresponding legal responsibilities.