CN2327015Y

CN2327015Y - Coin-identifying-part improved structure in coin-identifying device

Info

Publication number: CN2327015Y
Application number: CN 97243123
Authority: CN
Inventors: 张名魁; 胡其蔚
Original assignee: SHANGHAI INST OF PHYSIOLOGY CH
Current assignee: SHANGHAI INST OF PHYSIOLOGY CH
Priority date: 1997-12-26
Filing date: 1997-12-26
Publication date: 1999-06-30
Anticipated expiration: 2007-12-26

Abstract

The utility model relates to a coin identifying part improved structure in a coin identifying device, which is used for identifying ferromagnetic coins. The utility model comprises a coin feed port and a coin channel body connected with the back portion of the coin feed port. The utility model is characterized in that the appropriate position of the coin channel wall of the coin channel body is provided with a hard magnet and a hall element which is connected with a power supply whose output end is connected with the input end of an amplifier. The output signals of the hall element are enlarged by the amplifier, and then, the identified signals are output by a comparer. Therefore, the utility model has the advantage of simple structure, easy operation and long service life.

Description

Mirror coin parts in the Coin identifying apparatus improve structure

The utility model relates to a kind of improvement of Coin identifying apparatus, specifically, is the improvement to the coin detection means of tool ferromagnetic characteristic.

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, frequency change detection mode---and 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, 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, transmission branch is also many in addition, and usability is also undesirable.

For this reason, China utility model patent CN 93226462.X (title: Coin identifying apparatus, the applying date 931021), wherein, mirror coin parts are adopted the optical, mechanical and electronic integration structure, promptly adopt the scheme that the coin sense channel is set and settles magnetic test coil on this passage, its mirror coin parts comprise the coin sense channel with the trend of having a down dip, so that coin can rely on gravity to glide automatically.The length and width size of the coin slot of this sense channel is suitable with the diameter d 0 and the thickness h 0 of the true coin that will differentiate, 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.

Obviously, this scheme is different from former technology, tangible technical progress is also arranged, but with regard to the coin that has ferromagnetic characteristic at detection, for example be used to detect Chinese Renminbi's monobasic coin, the monobasic coin belongs to the nicke-clad steel material to be made, and the Characteristics Control switching member then remains in big, the bulky shortcoming of power consumption, and the defective that causes the weak point in serviceable life because of power consumption greatly.

The purpose of this utility model provides a kind of mirror coin parts simple in structure that are applicable to the ferromagnetism coin.

The utility model is used to differentiate that the ferromagnetism coin is to realize like this, it comprises coin slot and the coin passage body that connects thereafter, be characterized in, coin conduit wall appropriate location at this coin passage body is installed hard magnetic body and Hall element, this Hall element connects power supply, its output terminal is connected with amplifier input terminal, and the output signal of this Hall element is exported distinguishing signal through comparer again after this amplifier amplifies.

Structure as mentioned above, after the ferromagnetism coin enters the coin passage, form one " magnetic line of force concentrator " when it has played the effect of the concentration magnetic line of force during by Hall element, magnetic induction density is strengthened, linear hall element output just changes, just can obtain a pulse signal through amplification with relatively, nonferromagnetic coin to be checked is through then pulse-free signal output of Hall element.

Further, the utility model hard magnetic body and Hall element are sub-divided in the corresponding two side of coin conduit wall.At this moment, the ferromagnetism coin to be checked that enters the coin passage plays a part " fin shunt ", when its during through Hall element, play effect to the shunting of the magnetic line of force, magnetic induction density is weakened, and linear hall element output just changes, through amplification with relatively, export an identification pulse signal, nonferromagnetic coin, counterfeit money etc. then do not have the output of identification pulse signal.

The utility model has the advantages that: 1, simple in structure, the normalization components and parts are arranged again, easy to implement, maintenance is also convenient; 2, volume is little, power consumption is little, long service life.

Accompanying drawing of the present utility model is simply described as follows:

Fig. 1 is the perspective exploded view of existing Coin identifying apparatus.

100-coin slot 105-Characteristics Control switch

106-genuine note valve 107-counterfeit money valve

1014,1015,1016-arranges little detection reception amplifier

1017-by-pass valve 1021-enters the Photoelectric Detection reception amplifier

1023-frequency measurement ferrite core 1032-genuine note Photoelectric Detection reception amplifier

1042-counterfeit money Photoelectric Detection reception amplifier

Fig. 2 is a perspective exploded view of the present utility model.

Fig. 3 is a diagrammatic cross-section of the present utility model.

Fig. 4 is another embodiment synoptic diagram of the present utility model.

Fig. 5 is circuit theory diagrams of the present utility model.

Provide better embodiment of the utility model according to Fig. 2, Fig. 3 and Fig. 5 below.

As shown in the figure, the utility model comprises coin slot 2, and connects coin passage body 3 thereafter, this coin passage body 3 is established coin passage 30, sidewall 31 at the appropriate location of coin passage 30 is installed linear hall element 4 and hard magnetic bodies 5, and connect amplifier 41, the comparer 42 of this Hall element 4 after having successively, for avoiding ferromagnetism coin to be measured or other ferromagnetic sundries to be caused the coin passage to stop up, should select that magnetic is weak, the less magnet 5 of volume for use by strong magnetic jail.So magnetic coin magnetic line of force when the Hall element 4 changes less, for this reason, must select linear hall element for use.Present embodiment uses the magnetic ferrites Hard Magnetic of φ 6mm, and Hall element 4 is the UGN3501 type.

Other sees also Fig. 4, hard magnetic body 5 of the present utility model and Hall element 4 also can be installed in respectively on the two

lateral walls

31,32 of coin passage 30, though, here be that tested coin institute role is different with last routine difference, precedent has been the effect of " magnetic line of force concentrator ", the latter then has been the effect of " fin shunt ", but effect then is identical, because Hall element 4 detections is the variable quantity of magnetic field intensity.

Claims

1, the mirror coin parts in a kind of Coin identifying apparatus improve structure, be used to differentiate the ferromagnetism coin, it comprises coin slot and the coin passage body that connects thereafter, it is characterized in that hard magnetic body and Hall element being installed at the coin conduit wall appropriate location of this coin passage body, this Hall element connects power supply, its output terminal is connected with amplifier input terminal, and the output signal of this Hall element is exported distinguishing signal through comparer again after this amplifier amplifies.

2, the mirror coin parts in the Coin identifying apparatus according to claim 1 improve structure, it is characterized in that hard magnetic body and Hall element are installed in the same side of coin conduit wall or are divided in corresponding two side.