CN2172499Y

CN2172499Y - Coin recognizer

Info

Publication number: CN2172499Y
Application number: CN 93226462
Authority: CN
Inventors: 张名魁; 胡其蔚; 谈玲麟
Original assignee: SHANGHAI INST OF PHYSIOLOGY CH
Current assignee: SHANGHAI INST OF PHYSIOLOGY CH
Priority date: 1993-10-21
Filing date: 1993-10-21
Publication date: 1994-07-20
Anticipated expiration: 2003-10-21

Abstract

The utility model relates to a coin recognizer, comprising a microcomputer (2) and coin identification parts (1) connected with the microcomputer through electrocircuits, wherein, the coin identification parts (1) comprise a declined coin examination passageway; the length and the width of a coin slot (100) are matched with the diameter d 0 and the thickness h 0 of the coin to be detected; the coin slot (100) is following provided with small coins exclusion area (101), frequency measurement area (102), a coin receiving branch path (103), and a counterfeit coin exclusion branch path (104) in sequence, and in addition, special control switch members (105) are arranged to achieve the goal of excluding counterfeit coins more reliably. The utility model integrates distinguishing methods of mechanical structure, infrared light detection and oscillation frequency measurement, magnetics property, etc. so as to achieve the goals of simple structure, easy operation, and reliable identification.

Description

Coin recognizer

The utility model relates to a kind of improvement of Coin identifying apparatus, specifically, is a kind of device of discerning magnetic coin, and it can be used as the identification isolated plant of true and false coin, also can be applied to automatic vending machine.

Present employed Coin identifying apparatus, the most frequently used method are to be equipped with plural magnetic test coil on the sense channel of coin at least, so that under the effect of the electromagnetic field that they produce, examined the impedance variation that coin was introduced by time on it.Typical case's recognition method has three kinds: 1. the frequency change detection mode---as oscillator coil, therefore true and false coin, during by magnetic test coil, has different frequencies naturally and takes place owing to there is the difference of material, diameter and thickness with magnetic test coil; 2. the impedance voltage detection mode---as oscillator coil, the variation of the equivalent loss resistance R when coin is passed through is handled as the variable quantity of resonance circuit with magnetic test coil; 3. the detection mode of bridge balance point is formed electric bridge by magnetic test coil and with standard impedance unit and other two place's impedors that this magnetic test coil compares.But, all there are the formation complexity in loop, the shortcomings of a lot of composition of needs circuit element, like this, not only improved cost, and failure rate is also high; Again owing to detect the signal complexity of judgement system, the branch of transmission is also many in addition, and usability is also undesirable.

The purpose of this utility model provide a kind of simple and reliable, reliable Coin identifying apparatus distinguishes the true from the false.

Technical solution of the present utility model is:

1. claimed structure is simple, reliable; 2. easy to implement; 3. multi-usage, promptly the utility model both can be used as the independent true and false Coin identifying apparatus that uses, and also can be used as a building block such as automatic vending machine.For this reason, the utility model is made of microcomputer (for example single-chip microcomputer) and mirror coin parts.These mirror coin parts have diameter d, thickness h and material m and all functions of characteristic e of differentiating coin, so that can distinguish true from false coin reliably.In order to reach purpose simple in structure, reliable operation, mirror coin parts in the utility model adopt the complex art structure of optical, mechanical and electronic integration, be different from prior art thereby reach---adopt the scheme that the coin sense channel is set and on this passage, settles magnetic test coil, specifically, mirror coin parts in the utility model comprise the coin sense channel with the trend of having a down dip, so that coin can rely on gravity to glide automatically.The diameter d of the length and width size of the coin slot of this sense channel and the true coin that will differentiate ₀And thickness h ₀Suitable, like this, just the counterfeit money big or thicker than true coin, foreign material are refused it " outdoors "; The little detection zone of row, frequency measurement district are set and settle the Characteristics Control switching member at this sense channel appropriate location, and receipts coin fork road and the pseudo-road of pitching of row are set at the end of sense channel.Arrange little detection fauna by three pairs of infrared emission---receiving device constitutes three spot check gaging holes and constitutes, and the position distribution of this three spot checks gaging hole is d by diameter just ₀True, pseudo-coin institute topped, diameter d is less than d like this ₀True, pseudo-coin or foreign material just be prevented from entering the frequency measurement district, or be discharged from, or enter next sense channel and told truth from falsehood.The frequency measurement district is mainly by the passage area of oscillator coil to constituting of settling series connection at left and right side's appropriate location of sense channel.Like this, because the oscillation frequency that the coin to be looked into of different materials causes is different, thereby the oscillation frequency person that will depart from true coin is shunted away by the pseudo-fork of row road, and the oscillation frequency person who conforms with true coin is retained, then, restartability behavior gauge tap member---for example, electromagnet, checked again, the true coin that is subjected to the effect of Characteristics Control switching member (as the monobasic coin, belonging to the nicke-clad steel material makes) divide to flow into and receive coin fork road, and the pseudo-coin that is not acted on (for example, aluminum smash) is divided the row of inflow pseudo-fork road.

The utility model has the advantages that: (1) is simple in structure, and is well arranged, is easy to make and maintenance; (2) functional reliability is high good with the discriminating performance; (3) versatility can be used as independently identifier use, also is easy to constitute automatic vending machine.

Accompanying drawing of the present utility model is as follows:

Fig. 1 is a mirror coin parts diagrammatic cross-section of the present utility model.

Fig. 2 is a mirror coin component combined structure synoptic diagram of the present utility model.

Fig. 3 is an electric principle schematic of the present utility model.

Fig. 4 is a microcomputer workflow diagram of the present utility model.

Fig. 5 is a microcomputer synoptic diagram of the present utility model.

Fig. 6 is the enforcement electrical schematic diagram of the little detection zone of row of the present utility model.

Fig. 7 is a frequency measurement electrical schematic diagram of the present utility model.

Fig. 8 is a Characteristics Control switching member embodiment electrical schematic diagram of the present utility model.

Fig. 9 is a detection electrical schematic diagram of the present utility model.

Below we provide one of the utility model identification monobasic people coin embodiment according to Fig. 1-Fig. 9, and, further provide ins and outs of the present utility model in conjunction with description to this embodiment.

See also Fig. 1 and Fig. 2, as seen from the figure, present embodiment mirror coin parts 1 have the have a down dip inspection coin path 10 of trend of a tool, and the length of its coin slot 100 and the size of width are slightly larger than the diameter d of monobasic coin respectively ₀=26mm, thick h ₀=1.9mm, promptly suitable, just allow monobasic coin input.The little detection zone 101 of the row of setting after coin slot 100, present embodiment are to adopt the way of infrared detection to realize, promptly lay three on path 10 and detect

hole

1011,1012 and 1013, and they are d by diameter just ₀The true and false coin of=26mm or foreign material institute are topped, if d＜d ₀=26mm person then is divided to next sense channel and discerns, or is blocked, and present embodiment is that a baffle plate is set, and implements to be communicated with or to cut off with the further part of sense channel 10, generally is the little shunting of by-pass valve 1017 rows of realization is set.The realization of arranging little detection zone 1010 is to detect hole 1011-1013 installation three pairs of infrared emission---reception amplifier spare 1014-1016 the left and right of path 10 corresponding to above-mentioned three, promptly constitute by three pairs of infrarede emitting diodes (emission) and infrared phototriode (reception), before the identification coin, three light emitting diodes all are in " bright " state, phototriode can both receive by detecting the infrared light of hole 1011-1013, in case these three are detected the hole by simultaneously topped, promptly launch infrared light and be cut off, just by Sheffer stroke gate 1018(Fig. 6) input d=d ₀Signal, send signal by microcomputer 2, open baffle plate 1017(or by-pass valve), the little detection zone 101 of the row of allowing is communicated with the follow-up part of sense channel 10, otherwise as long as there is a detection hole not covered, then this baffle plate is in blocking state, little function is arranged in realization.

Next, let us is described the formation in the frequency measurement district 102 on the sense channel 10 in the present embodiment and is differentiated the function of the coin true and false.As everyone knows, this is one of the most frequently used technical scheme.In the present embodiment, frequency measurement district 102 circle that dotted line surrounded as shown in Figure 1, it is that

oscillator coil

1022 and 1023 is in series in the area that is coated, this two oscillator coil is a skeleton with ferrite core 1023, the oscillatory circuit of formation as shown in Figure 7 because the true or false of coin to be identified is because of the different differences that cause oscillation frequency of their material, oscillator signal feed-in microcomputer 2, and handle in real time by microcomputer 2, differentiated, in the frequency f of true coin ₀The epigenesist of scope is pseudo-, belongs to f ₀The person is " very " temporarily in the scope.In the present embodiment, end is provided with to enter and judges hole 1020 before frequency measurement district 102, left side in path 10, infrared emission---reception amplifier spare 1021 is installed in right corresponding position, when the coin process that is identified is judged hole 1020, because of infrared emission light is interdicted, the information that produces, read in by microcomputer 2 gatings after by as shown in Figure 9 circuit light signal being become electric signal, microcomputer 2 enters the action that the true and false is judged in frequency measurement thereupon, belong to pseudo-person, then microcomputer 2 sends instruction, start counterfeit money valve 107 as shown in Figure 8, counterfeit money is entered pseudo-fork road 104, and this counterfeit money moves to counterfeit money notice hole 1041, by its corresponding infrared emission---reception amplifier spare 1042(sees Fig. 2 and Fig. 9) signal that produced.Read in by microcomputer 2 gatings, obtain to receive the information of counterfeit money.If frequency measurement result, the frequency of being checked coin falls into the genuine note frequency range, then send instruction by microcomputer 2 again, starting characteristic gauge tap member 105, in the present embodiment electromagnet (referring to Fig. 1 and Fig. 8), because it is energized magnetization, therefore, if the coin that ferromagnetic material is made---as the monobasic coin is nickel copper-clad material, just be attracted, thereby, the unlatching of genuine note valve 106 also caused, genuine note is entered receive coin fork road 103, and when this genuine note blocked the genuine note notice hole 1031 of receiving on the coin fork road 103, its corresponding infrared emission---reception amplifier spare 1032 promptly was cut off because of it connects light path, thereby as shown in Figure 9, microcomputer 2 gatings read in this signal, obtain taking in the information of genuine note; Otherwise,, be discharged into the pseudo-fork of row road 104 because of the action of ignoring Characteristics Control switching member 105 eventually although if this coin when frequency measurement, is considered to " very " coin.

See also Fig. 4 and Fig. 5, the workflow in the present embodiment is cured in the ROM sheet, thereby realizes differentiating the full-automation of coin process.

Claims

1, a kind of Coin identifying apparatus, by microcomputer (2) with constitute with mirror coin parts (1) that it is connected with circuit, the inspection coin passage (10) that these mirror coin parts (1) have tool to have a down dip, the end of this passage (10) becomes the receipts coin road (103) and the pseudo-fork of the row road (104) of forked, be right after above-mentioned y-bend road (103), (104) and be frequency measurement district (102) before, the right and left in frequency measurement district (102) is equipped with oscillator coil (1022) and (1023) of series connection, it is characterized in that examining length and width and the maximum number person's who waits to look into coin the diameter d of the coin slot (100) of coin passage (10) ₀, thickness h ₀Suitable, and coin slot (100) appropriate location afterwards be provided with row little detection zone (101), and frequency measurement district (102) go up top side mounting characteristics gauge tap member (105), frequency measurement district (102) with receive coin fork roads (103) and row's puppet and pitch road (104) and become connection-blocking-up connection with genuine note valve (106), counterfeit money valve (107) respectively.

2,, it is characterized in that arranging little detection zone (101) and be by just by being diameter d according to the described device of claim 1 ₀True, pseudo-coin topped three detect hole (1011), (1012) and (1013) are determined, and at these three left and right side's appropriate locations installation three pairs of infrared emission---the receiving devices (1014-1016) that detect the hole, and at last portion installation by-pass valve (1017) or a telescopic connection---barrier plate.

3,, it is characterized in that Characteristics Control switching member (105) is an electromagnet according to the described device of claim 1.

4,, it is characterized in that genuine note valve (106) and counterfeit money valve (107) all are to be made of electromagnetic valve according to the described device of claim 1.