CN1173301C - Composite type coin identifier - Google Patents
Composite type coin identifier Download PDFInfo
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- CN1173301C CN1173301C CNB001025503A CN00102550A CN1173301C CN 1173301 C CN1173301 C CN 1173301C CN B001025503 A CNB001025503 A CN B001025503A CN 00102550 A CN00102550 A CN 00102550A CN 1173301 C CN1173301 C CN 1173301C
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- coin
- detection
- magnetic field
- plate antenna
- composite type
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Abstract
The present invention discloses a composite coin identifying device which comprises a coin clamping groove, and is characterized in that two side boards of the coin clamping groove are formed into plate capacitance which is connected with capacitance detecting circuit; a magnetic field detecting circuit is arranged on the outer side of the plate capacitance corresponding to the coin position. The present invention detects geometric size of the coins and electromagnetic parameters to distinguish the truth of the throw-in coins by utilizing the capacitance and the magnetic field for composite detection, and thus, achieves the effects of anti-interference, high accuracy, etc.
Description
Technical field
The present invention relates to a kind of Coin identifying apparatus, be widely used in the application apparatuss of inserting coins such as Coin-freed vending machine.
Background technology
Along with the development of society, the raising of people's living standard, in order to reduce human cost, the robotization service equipment---as employings more and more at large such as automatic vending machines, Coin identifying apparatus is a requisite device in this kind equipment.Coin recognizing method will accomplish fast, accurately.Existing coin identifying equipment also can reach above-mentioned requirements not to the utmost.As adopting pure physical construction to detect the physical dimension of coin, its major defect is that accuracy of detection is low, is not easy to connect electric control gear and setting, therefore is mainly used in the lower occasion of requirement.Another kind of electronics and the appliance circuit of adopting carries out qualitative analysis methods to coin, owing to be the single parameter test, still can not meet the demands.
In addition, because this device in use needs round-the-clock awaiting orders often, can use at any time, not have under the situation of mains-supplied, the stand-by time weak point is a very fatal shortcoming.
Summary of the invention
Purpose of the present invention is exactly to provide a kind of Coin identifying apparatus in order to overcome the above problems, and can discern coin quickly and accurately, and saves electric energy, reduction expense and lengthen working hours.
The present invention realizes that the scheme of above-mentioned purpose is: a kind of composite type coin identifier, include the coin draw-in groove, and two side plates of described coin draw-in groove constitute capacity plate antenna, and described capacity plate antenna links to each other with capacitive detection circuit; It is characterized in that: corresponding to the coin position detection of magnetic field circuit is arranged in the capacity plate antenna outside; At the coin entry place whereabouts chute that epimere is narrow, hypomere is wide is arranged, establish a normal open switch in the chute, described normal open switch comprises two sheet metals that are in normally open, and when coin fell, coin touches sheet metal can make switch conduction; After being in series, described normal open switch and relay coil, another normally closed switch be connected on the power supply; When conducting, can make the relay coil energising, thereby make an one contacting; And under the relay power state, when switch is bumped out, can cause the outage of line electric apparatus coil, thereby its contact is resetted.
Owing to adopted above scheme, detect the variation of the electric capacity that causes after the coin input with capacitive detection circuit, detect the variation in its caused magnetic field with the detection of magnetic field device, the two constitutes electric capacity and magnetic field compound sensor, can carry out fast detecting to the physical dimension and the electromagnetic parameter of coin, compare with the related parameter that has of standard coinage, can correctly judge the true and false of coin.Owing to be provided with the power supply automatic open device, reached the purpose of saving electric energy, reduction expense and lengthening working hours.
Description of drawings
Fig. 1 is an embodiment of the invention compound sensor basic structure synoptic diagram.
Fig. 2 is that embodiment of the invention single-chip microcomputer detects and system's control synoptic diagram.
Fig. 3 is an embodiment of the invention power supply automatic open device synoptic diagram.
Fig. 4 is an embodiment of the invention power supply automatic open device electrical connection graph.
Fig. 5 is an embodiment of the invention system circuit diagram.
Embodiment
Also the invention will be further described in conjunction with the accompanying drawings below by specific embodiment.
Embodiment one: this routine composite type coin identifier includes coin draw-in groove, power source starting apparatus, composite sensing assembly, central processing unit, coin conveying device.Two side plates of described coin draw-in groove constitute capacity plate antenna 3, and described capacity plate antenna 3 links to each other with capacitive detection circuit; Corresponding to the coin position detection of magnetic field circuit is arranged in capacity plate antenna 3 outsides.Capacitive detection circuit and detection of magnetic field circuit are respectively applied for to be surveyed because the electric capacity that introducing brought of coin and the variation in magnetic field.
The output terminal of described capacitive detection circuit and detection of magnetic field circuit links to each other with central processing unit respectively, and central processing unit links to each other with operating means with demonstration again, to show result of detection and to carry out relevant operation according to result of detection.Described central processing unit can be single-chip microcomputer, single card microcomputer, central processing unit (CPU) etc., but wherein caused electric capacity of storage standards proof coin and changes of magnetic field numerical value, so that compare, thereby judge the true and false with caused electric capacity of tested coin and changes of magnetic field numerical value.
But proof coin numerical value wherein also can be to obtain in real time.Particularly in order to compensate the extraneous interference (as humidity, temperature, electromagnetic field etc.) that produces, described capacity plate antenna 3, capacitive detection circuit and detection of magnetic field circuit respectively can be provided with two, be respectively applied for and survey proof coin and tested coin, like this, even external condition changes, proof coin and the caused electric capacity of tested coin and changes of magnetic field amount change simultaneously, thereby are compensated.
The method of capacitance detecting can have a lot, be to utilize the correlativity of RC oscillation frequency and electric capacity to survey in this example: promptly described capacitive detection circuit comprises an electro coupled oscillator, described capacity plate antenna 3 is elements in this oscillator, makes its oscillation frequency relevant with the electric capacity of capacity plate antenna 3.The variation that records oscillation frequency like this can record the changes in capacitance of capacity plate antenna 3.
Respectively the various piece in the device is described below.
1, power supply automatic open device
Consider that some selling apparatus of inserting coins uses dry cell, rechargeable battery, its most of the time is to be in the state of selling goods of waiting for, in order to reach the purpose of saving electric energy, reduction expense and lengthening working hours, the spy is provided with the power supply automatic open device.The structure of this device as shown in Figure 3, electrical connection graph is as shown in Figure 4.At coin entry 5 places a whereabouts chute that epimere is narrow, hypomere is wide is arranged, establish a normal open switch K1 in the chute, described normal open switch K1 comprises two sheet metals that are in normally open, and when coin fell, coin touches sheet metal can make K switch 1 conducting; Described normal open switch K1 and relay coil J0, another normally closed switch K2 are connected on the power supply after being in series; When the K1 conducting, can make relay coil J0 energising, thereby make an one contacting; And under the relay power state, when K switch 2 is bumped out, can cause line electric apparatus coil J0 outage, thereby its contact is resetted.
When off position, Coin identifying apparatus is in the outage power save mode, and when coin dropped into, coin made normal open switch K1 conducting, and then makes whole recognition device enter " coin detection " state; After detection is finished, disconnect normally closed switch K2 by another mechanical action (, selling the whereabouts of goods etc.) as the discharge of coin, make whole recognition device be in the outage power save mode.So circulation.The terminals that indicate "+", "-" mark among Fig. 4 are meant power supply, and wherein a place is the input power supply, and another place is out-put supply.
After coin enters the whereabouts chute that epimere is narrow, hypomere is wide from coin entry 5, at A place percussion contact-making switch K1, this switch by two parallel up and down and sheet metal that locate often to open form, contact-making switch K1 connects after by percussion, thus engage relay coil J0, relay enters self-locking state, one of them normally opened contact J0-2 connects system power supply, after the work of selling goods is finished, disconnects normally closed switch K2 by the mechanical action switch, thereby disconnect the relay latching circuit, the shutdown system power supply.(J0-1 is another normally opened contact of relay among Fig. 4)
2, coin detects compound sensor
Its basic structure as shown in Figure 1, as mentioned above, this compound sensor comprises capacity plate antenna 3 and detection of magnetic field device, the detection of magnetic field device comprises magnet steel 1, hall device 2.4 is tested coins among the figure.
In the gap of capacity plate antenna 3, place the object of different size and specific inductive capacity, will change the capacity of this capacity plate antenna, can understand the parameter of tested coin according to the numerical value change of electric capacity.In fixing magnetic circuit, put into the difference that different objects will cause magnetic flux and change, detect this parameter with hall device herein.
3, single chip microcomputer detects and system controller
Its principle as shown in Figure 2.Single-chip microcomputer reads the parameter of tested coin and standard coinage respectively, the two is compared, thereby make judgement, and can show or carry out relevant operation according to judged result.
Fig. 5 is the physical circuit of an embodiment, adopts the AT89C2051 single-chip microcomputer in this example, utilizes its P32, P33 mouth to gather the capacitance parameter of compound sensor output, adopts P10, P11 mouth to gather the parameter of hall device output in the compound sensor.Its flow chart as shown in Figure 6.Gather the relevant parameter value of standard jig before coin drops into, the relevant parameter value (or the two is gathered simultaneously) of tested coin after the coin input calculates the two difference, whether within the limits prescribed to judge this difference, thereby determines the true and false of tested coin.
The implication of the relevant label of Fig. 5 circuit is as follows: X1 is a quartz oscillator; RESET, P30/RXD, P31/TXD, XTAL2, XTAL1, P32/INT0, P33/INT1, P34/T0, P35/T1, GND, P37, P10-P17, VCC are the standard terminals titles of AT89C2051 single-chip microcomputer; SCM peripheral label 1-20 is a number of pins; D1, D2, D3 are light emitting diodes; D4, D5 are diode; A2, A3 are triode; R1-R7 is a resistance; C1, C2, C3 are capacitor; A1 is a single-chip microcomputer; Vref is a reference voltage.
Claims (5)
1, a kind of composite type coin identifier includes the coin draw-in groove, and two side plates of described coin draw-in groove constitute capacity plate antenna (3), and described capacity plate antenna (3) links to each other with capacitive detection circuit; It is characterized in that: corresponding to the coin position detection of magnetic field circuit is arranged in capacity plate antenna (3) outside; Locate a whereabouts chute that epimere is narrow, hypomere is wide at coin entry (5), establish a normal open switch (K1) in the chute, described normal open switch (K1) comprises two sheet metals that are in normally open, and when coin fell, coin touches sheet metal can make switch (K1) conducting; Described normal open switch (K1) is connected on the power supply after being in series with relay coil (J0), another normally closed switch (K2); When (K1) conducting, can make relay coil (J0) energising, thereby make an one contacting; And under the relay power state, when switch (K2) is bumped out, can cause line electric apparatus coil (J0) outage, thereby its contact is resetted.
2, composite type coin identifier as claimed in claim 1 is characterized in that: described capacity plate antenna (3), capacitive detection circuit and detection of magnetic field circuit respectively have two, are respectively applied for to survey proof coin and tested coin.
3, composite type coin identifier as claimed in claim 1 or 2, it is characterized in that: described capacitive detection circuit comprises an electro coupled oscillator, described capacity plate antenna (3) is an element in this oscillator, makes its oscillation frequency relevant with the electric capacity of capacity plate antenna (3).
4, composite type coin identifier as claimed in claim 1 or 2, it is characterized in that: the output terminal of described capacitive detection circuit and detection of magnetic field circuit links to each other with central processing unit respectively, central processing unit links to each other with operating means with demonstration again, to show result of detection and to carry out relevant operation according to result of detection.
5, composite type coin identifier as claimed in claim 3, it is characterized in that: the output terminal of described capacitive detection circuit and detection of magnetic field circuit links to each other with central processing unit respectively, central processing unit links to each other with operating means with demonstration again, to show result of detection and to carry out relevant operation according to result of detection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001025503A CN1173301C (en) | 2000-03-02 | 2000-03-02 | Composite type coin identifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001025503A CN1173301C (en) | 2000-03-02 | 2000-03-02 | Composite type coin identifier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1311496A CN1311496A (en) | 2001-09-05 |
| CN1173301C true CN1173301C (en) | 2004-10-27 |
Family
ID=4576462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001025503A Expired - Fee Related CN1173301C (en) | 2000-03-02 | 2000-03-02 | Composite type coin identifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1173301C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100414567C (en) * | 2006-02-07 | 2008-08-27 | 上海造币厂 | Nondestructive total constant value testing method for coin type objects and special testing device |
| CN103679912A (en) * | 2012-09-20 | 2014-03-26 | 吉鸿电子股份有限公司 | Pipeline coin detection method |
| TW202022335A (en) * | 2018-12-05 | 2020-06-16 | 奇異平台股份有限公司 | Multi-axis force sensor |
| CN110660151A (en) * | 2019-08-16 | 2020-01-07 | 北京智尚捷付科技股份有限公司 | Self-adaptive mixed change-making subway ticket selling equipment and method |
| CN113570772A (en) * | 2021-08-06 | 2021-10-29 | 广州新丽华科技有限公司 | Coin-freed apparatus for frequency-changing identifying coin |
-
2000
- 2000-03-02 CN CNB001025503A patent/CN1173301C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1311496A (en) | 2001-09-05 |
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