CN210109904U

CN210109904U - Banknote checking device

Info

Publication number: CN210109904U
Application number: CN201920995877.7U
Authority: CN
Inventors: 周严; 杜飞飞; 曹宝莲
Original assignee: Wuhan Zmvision Technology Co Ltd
Current assignee: Wuhan Zhuomu Technology Co ltd
Priority date: 2019-06-28
Filing date: 2019-06-28
Publication date: 2020-02-21
Anticipated expiration: 2029-06-28

Abstract

The utility model relates to a currency examine device, including LED lamp, light filter, silicon photocell and processing unit, the LED lamp sets up in walking paper money passageway top for shine the false region of distinguishing of paper money through walking the paper money passageway, the light filter set up in walk paper money passageway below for the transmission light that passes through the false region of paper money distinguishing carries out the filtering process, only lets the light of specific wave band pass through, the silicon photocell is located the light filter below for absorb the light energy of specific wave band, and convert light energy into the electric energy, processing unit with the silicon photocell electricity is connected, because the transmissivity of the 365nm wave band's of true coin and false coin is different, promptly through silicon photocell conversion back, the size of its electric energy is also different, consequently, processing unit can judge the true and false of paper money with the electric energy size and the standard value contrast of silicon photocell photoelectric conversion.

Description

Banknote checking device

Technical Field

The utility model relates to a currency examine field, concretely relates to currency examine device.

Background

In the large background of economic globalization, cash counters capable of recognizing multinational currencies are the first choice for more and more international banks. The security features of paper currency are very numerous, as only the security features of the RMB are as many as 18, plus a wide variety of foreign currencies. The paper money has the common anti-counterfeiting characteristics of paper money, so that the paper money can be developed in multiple countries, but special methods are needed when the paper money is made of special materials.

The image discrimination of the cash register is realized by a contact type image sensor, which is called a CIS image sensor for short. In a general currency counting and checking device, a currency image false distinguishing area is composed of a pair of CIS image sensors which are oppositely arranged up and down, a currency conveying channel is arranged between the two sensors, and when a currency passes through the currency conveying channel, the CIS image sensors directly collect light ray information reflected by the currency. However, in the process of identifying counterfeit money in multiple countries, it is found that the material of some banknotes does not absorb light in the UVA band, that is, the light in the UVA band is directly transmitted, so that the CSI image sensor cannot receive the light information in the UVA band, thereby causing a counterfeit detection hole, for example, the problem of us dollars used in many countries exists. In order to make up for the defect of the CIS image sensor, two pairs of UVA transmission modules are additionally arranged outside the CIS image sensor in the current market, so that the requirement on the structural angle of a banknote checking machine part is high, the service life of the module is short due to the influence of external factors such as easy dust accumulation and deformation of the module, the function is weakened quickly, the size of the counterfeit detection part is increased due to the additionally arranged module, and the production cost is increased.

In UVA wave band light, 365nm light exists specially, and is applied to many industries, the transmission effect of different paper money materials to 365nm wave band light is different, namely, the energy of 365nm wave band light which can be transmitted by real money and counterfeit money is different due to different materials, and then the counterfeit money can be identified according to the characteristic by using a method or not.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a currency examine device, including LED lamp, light filter, silicon photocell and processing unit, the LED lamp sets up in walking paper money passageway one side for shine the false region of distinguishing of paper money through walking the paper money passageway, the light filter set up in walk the opposite side of paper money passageway for the transmission light that passes through the false region of paper money distinguishing carries out the filtering process, only lets the light of specific wave band pass through, the silicon photocell is located light filter shady face for absorb the light energy of the specific wave band after the filtering process, and convert light energy into the electric energy, processing unit with the silicon photocell electricity is connected for the true and false of paper money is judged to the electric energy size through silicon photocell photoelectric conversion.

Further, the LED lamp and the optical filter are oppositely arranged.

Further, the optical filter is a 365nm band-pass filter, and light in a 365nm wave band passes through the optical filter.

Further, CIS image sensors are arranged on two sides of the money walking channel, the LED lamp is located on the CIS image sensor on one side, and the optical filter and the silicon photocell are located on the CIS image sensor on the other side.

Further, the LED lamps are LED lamps emitting light with a wave band of 365nm, and the number of the LED lamps is multiple.

Furthermore, the currency detecting device comprises a plurality of groups of optical filters and silicon photocells, the silicon photocells in each group of optical filters and the silicon photocells are all located on the backlight surfaces of the corresponding optical filters, and each silicon photocell is electrically connected with the processing unit.

Furthermore, the device also comprises a light shield made of a full-shading material, the light shield and the optical filter jointly form a closed space, and the silicon photocell is positioned in the closed space.

The utility model discloses following beneficial effect has:

1. when the LED lamp irradiates the counterfeit identification area of the paper money, 365nm band light penetrates through the paper money to form transmission light, the transmission light only allows specific band light to pass through after passing through the optical filter, for example, 365nm band light, the specific band light is absorbed by the silicon photocell to convert light energy into electric energy, and the processing unit can judge the authenticity of the paper money by comparing the standard value photoelectric conversion electric energy of the silicon photocell with the standard value of the electric energy of the real money and the counterfeit money because the 365nm band light has different transmittances, namely the electric energy is also different after being converted by the silicon photocell.

2. The utility model discloses the wave transmission of special wave band has only been passed to the filter plate, has reduced the wave band, is convenient for calculate the energy size of light through the size of electric energy, and the method is simple convenient.

3. The optical filter, the LED lamp and the silicon photocell are arranged on the CIS image sensor, the LED is directly arranged on the CIS image sensor, the CIS image sensor is slightly changed, and the operation is simple.

4. The CIS image sensor is only required to be changed, the two are combined into one, and a counterfeit identification part is not required to be additionally arranged, so that the space and the cost are saved.

5. Through the silicon photocell, light energy which is difficult to quantify is displayed through quantifiable electric energy, and the data contrast is more distinct and accurate.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a structural diagram of a banknote checking device provided by the present invention;

description of reference numerals: 1. the system comprises an upper CIS image sensor, a lower CIS image sensor, a light-emitting diode (LED) lamp, a light filter, a silicon photocell, a processing circuit, a banknote passing channel and a light filter, wherein the upper CIS image sensor is 2, the lower CIS image sensor is 3, the LED lamp is 4, the light filter is 5, the silicon photocell is 6, and the.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1, the utility model provides a pair of currency examine device, including LED lamp 3, light filter 4, silicon photocell 5 and processing unit 6, LED lamp 3 sets up in walking paper money passageway 7 top for shine the false region of distinguishing of paper money through walking paper money passageway 7, light filter 4 sets up in walking paper money passageway 7 below for filter treatment is carried out to the transmission light that passes through the false region of paper money distinguishing, only lets the light of specific wave band pass through, silicon photocell 5 is located light filter 4 below for absorb the light energy of specific wave band after filter treatment, and change light energy into the electric energy, processing unit 6 with silicon photocell 5 electricity is connected for judge the true and false of paper money through the electric energy size of silicon photocell 5 photoelectric conversion.

It should be noted that, the LED lamp 3 and the optical filter 4 of the present invention are respectively located at two sides of the banknote passing channel, as shown in fig. 1, the LED lamp 3 is disposed above the banknote passing channel 7, and the optical filter is disposed below the banknote passing channel 7; in addition, the other way round can be adopted, namely the LED lamp is arranged below the cash channel 7, and the optical filter is arranged above the cash channel 7.

The utility model discloses, when the false region of appraising of paper currency is shone to LED lamp 3, the light of specific wave band passes paper currency and forms the transmitted light, transmitted light is through light filter 4 back, only let the light of specific wave band pass through, for example, the light of 365nm wave band, the light of specific wave band is absorbed the back by silicon photocell 5, convert light energy into electric energy, because the transmissivity of the light of the 365nm wave band of true coin and false coin is different, promptly through silicon photocell 5 conversion back, the size of its electric energy is also different, therefore, processing unit 6 can judge the true and false of paper currency with the electric energy size and the standard value contrast of silicon photocell 5 photoelectric conversion.

The utility model provides a pair of currency examine device can be applied to the counting currency machine alone on, also can set up on the original CIS image sensor of counting currency machine, in addition on original CIS image sensor currency examine device, change to the counting currency machine is little, and has compensatied the false-proof leak of the unable special paper currency of discernment of original CIS image sensor.

Preferably, the LED lamp 3 and the optical filter 4 are oppositely disposed.

Preferably, the optical filter 4 is a 365nm band-pass filter 4, so that light with a 365nm wave band passes through, the wave band is reduced, the energy of the light can be calculated conveniently according to the size of electric energy, and the method is simple and convenient.

Preferably, a condenser lens is arranged below the LED lamp 3, light emitted by the LED lamp 3 is irradiated onto the paper money passing through the paper money passing channel 7 after passing through the condenser lens, and the light is condensed by the condenser lens to irradiate an area.

Preferably, an upper CIS image sensor 1 is arranged above the banknote passage, a lower CIS image sensor 2 is arranged below the banknote passage, the LED lamp 3 is positioned on the upper CIS image sensor, and the optical filter and the silicon photocell are positioned on the lower CIS image sensor.

Preferably, the LED lamp 3 is an LED lamp capable of emitting light in a 365nm wave band, and the number of the LED lamps 3 is plural.

Preferably, a plurality of sets of optical filters 4 and silicon photocells 5 are arranged below the banknote passing channel 7, the silicon photocells 5 in each set of optical filters 4 and silicon photocells 5 are all arranged below the corresponding optical filters 4, and each silicon photocell 5 is electrically connected with the processing unit 6.

In the above embodiment, the newly added LED lamp is located on the lower CIS image sensor 2 below the banknote passage 7 for a special waveband, and the filter 4 and the silicon photocell 5 are added on the basis of the LED lamp of the special waveband added to the upper CIS image sensor 1, and without additionally adding a false distinguishing component, light energy which is difficult to quantify is presented through quantifiable electric energy through the silicon photocell 5, so that data contrast is clearer and more accurate.

Preferably, the device further comprises a light shield 8 made of a full-shading material, the light shield 8 and the optical filter 4 together form a closed space, and the silicon photocell is located in the closed space.

In the above embodiment, the silicon photocell is located in the closed space, so that only light passing through the optical filter 4 can irradiate the silicon photocell, and other light rays are prevented from entering the silicon photocell to influence the measurement accuracy.

It should be noted that the claimed solution of the present invention is to select and connect various hardware devices, and those skilled in the art can obtain the corresponding program without objection when learning the hardware solution of the present invention, so that the claimed solution of the present invention does not relate to the improvement of the program.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. The utility model provides a currency examine device, its characterized in that, includes LED lamp, light filter, silicon photocell and processing unit, the LED lamp sets up in walking paper money passageway one side for shine the false-distinguishing region of the paper currency through walking the paper money passageway, the light filter set up in walk the opposite side of paper money passageway, be used for carrying out the filtering process to the transmission light that passes through the false-distinguishing region of paper currency, only let the light of specific wave band pass through, the silicon photocell is located the light filter shady face for absorb the light energy of the specific wave band after the filtering process, and convert light energy into the electric energy, processing unit with the silicon photocell electricity is connected for judge the true and false of paper currency through the electric energy size of silicon photocell photoelectric conversion.

2. The banknote validator as claimed in claim 1, wherein the LED lamp and the optical filter are oppositely disposed.

3. The banknote validator as claimed in claim 1, wherein the optical filter is a 365nm band pass filter.

4. The banknote detection device as claimed in claim 1, wherein CIS image sensors are arranged on two sides of the banknote transport channel, the LED lamp is arranged on one CIS image sensor, and the optical filter and the silicon photocell are arranged on the other CIS image sensor.

5. The banknote validator as claimed in claim 1, wherein the LED lamp is an LED lamp emitting light in 365nm band.

6. The banknote validator as claimed in claim 1, wherein the LED lamp is plural.

7. The banknote checking device according to claim 1, wherein the banknote checking device comprises a plurality of sets of optical filters and silicon photocells, the silicon photocells in each set of optical filters and silicon photocells are located on the backlight surfaces of the corresponding optical filters, and each silicon photocell is electrically connected with the processing unit.

8. The apparatus for inspecting paper money as claimed in claim 1, further comprising a light shield made of a fully opaque material, wherein the light shield and the optical filter together form an enclosed space, and the silicon photocell is located in the enclosed space.