技术领域technical field
本实用新型涉及金融设备技术领域，特别是涉及一种存取款循环机的钞票识别模块。The utility model relates to the technical field of financial equipment, in particular to a banknote identification module of a deposit and withdrawal recycling machine.
背景技术Background technique
钞票识别模块即BV模块在存取款循环机芯设备中的核心模块，用以识别并计数，为便于计数，通常使用在钞票识别模块中的特定位置安装的光电对射传感器来完成钞票计数功能。而实际过程中，由于钞票存在破洞、粘有胶带或者磨钞异常等都会造成存取款循环机芯的钞票计数错误。而且在存钞过程中出现磨钞故障或者其他特殊情况造成钞票重张等情况也会造成钞票计数错误，一直没有好的解决办法，这就大大影响存取款循环机芯的可靠性和稳定性，如何提高钞票识别模块的测量精度和数据的多样性，成为急需解决的问题。The banknote identification module is the core module of the BV module in the deposit and withdrawal cycle equipment, which is used to identify and count. For the convenience of counting, the photoelectric sensor installed at a specific position in the banknote identification module is usually used to complete the banknote counting function. . However, in the actual process, due to holes in banknotes, adhesive tape or abnormal grinding of banknotes, etc., the counting of banknotes in the deposit and withdrawal cycle movement will be wrong. Moreover, in the process of depositing banknotes, there is a grinding failure or other special circumstances that cause banknotes to be doubled, which will also cause banknote counting errors. There has been no good solution, which greatly affects the reliability and stability of the deposit and withdrawal cycle movement. , How to improve the measurement accuracy and data diversity of the banknote recognition module has become an urgent problem to be solved.
实用新型内容Utility model content
本实用新型的目的是针对现有技术中存在的技术缺陷，而提供一种存取款循环机的钞票识别模块。The purpose of the utility model is to provide a banknote identification module of a deposit and withdrawal recycling machine aiming at the technical defects existing in the prior art.
为实现本实用新型的目的所采用的技术方案是：The technical scheme adopted for realizing the purpose of this utility model is:
一种存取款循环机的钞票识别模块，包括从钞票入口向钞票出口依次间隔设置的图像采集传感器、磁信号传感器和厚度传感器，以及两两成对分别间隔设置在图像采集传感器前部和厚度传感器后部的四个光电断路器，以及主控制器，所述的主控制器分别与所述的图像采集传感器、磁信号传感器和厚度传感器以及光电断路器通讯连接。A banknote identification module of a deposit and withdrawal recycle machine, comprising an image acquisition sensor, a magnetic signal sensor and a thickness sensor arranged at intervals from the banknote inlet to the banknote outlet in sequence, and two pairs of image acquisition sensors are respectively arranged at intervals in front of the image acquisition sensor and the thickness sensor Four photoelectric circuit breakers at the rear of the sensor, and a main controller, the main controller communicates with the image acquisition sensor, the magnetic signal sensor, the thickness sensor and the photoelectric circuit breaker respectively.
所述的厚度传感器包括多个沿钞票横向布列的霍尔式检厚单元，所述的霍尔式检厚单元包括与随动辊组件随动的磁铁，The thickness sensor includes a plurality of Hall-type thickness-detecting units arranged transversely along the banknote, and the Hall-type thickness-detecting unit includes a magnet that follows the follower roller assembly,
霍尔传感器，与所述的磁铁一一对应地固定设置在其上方，用于将由钞票的厚度引起的磁通量变化转换成电压信号；Hall sensors are fixed above the magnets in one-to-one correspondence, and are used to convert the change of magnetic flux caused by the thickness of the banknote into a voltage signal;
检厚信号放大电路，用于将霍尔传感器输出电压信号放大至检测范围内；Thickness detection signal amplification circuit, used to amplify the output voltage signal of the Hall sensor to the detection range;
检厚通道选择电路，用于将信号放大电路处理后的信号进行多通道的切换并连接到信号采集电路；The thickness detection channel selection circuit is used to switch the signal processed by the signal amplification circuit into multiple channels and connect it to the signal acquisition circuit;
检厚控制器，用于接收信号采集电路输出的数字信号并通过外部接口输出给主控制器，同时产生检厚通道选择电路的切换控制信号。The thickness detection controller is used to receive the digital signal output by the signal acquisition circuit and output it to the main controller through the external interface, and simultaneously generate the switching control signal of the thickness detection channel selection circuit.
所述的检厚控制器为FPGA，所述的检厚通道选择电路为数据选通模块，FPGA和数据选通模块之间设置有电压转换模块。The thickness inspection controller is an FPGA, the thickness inspection channel selection circuit is a data gating module, and a voltage conversion module is arranged between the FPGA and the data gating module.
所述的四个光电对射传感器两两为一组分别居中且保持间隔地设置在钞票识别模块的进口和出口且分别与图像采集传感器等间距设置。The four photoelectric cross-beam sensors are arranged in pairs in pairs at the entrance and exit of the banknote recognition module in the center and at intervals, and are arranged equidistantly from the image acquisition sensors.
进口处光电断路器与图像采集传感器间距为H，进口处的两个光电断路器的间距为W，两个光电断路器分别与图像采集传感器对应侧的外侧边间距都为L，则H≥(W*tanα+L*tanα)，其中α为钞票最大的允许斜度。The distance between the photoelectric circuit breaker at the entrance and the image acquisition sensor is H, the distance between the two photoelectric circuit breakers at the entrance is W, and the distance between the two photoelectric circuit breakers and the corresponding sides of the image acquisition sensor is L, then H≥ (W*tanα+L*tanα), where α is the maximum allowable slope of the banknote.
与现有技术相比，本实用新型的有益效果是：Compared with the prior art, the beneficial effects of the utility model are:
本实用新型的钞票识别模块，通过两对光电断路器对钞票的进出角度进行判断，有效保证中间冠字号采集和磁条采集以及厚度采集的有效性，避免出现噪声数据，而且采用霍尔式传感器，有效提高了堆叠的判别效果，可以分析出是几张钞票重叠，更为后续钞票计数处理提供基础。The banknote identification module of the utility model judges the angle of entry and exit of banknotes through two pairs of photoelectric circuit breakers, effectively guarantees the effectiveness of the middle serial number collection, magnetic strip collection and thickness collection, avoids noise data, and uses Hall-type sensors , which effectively improves the discrimination effect of stacking, and can analyze the overlap of several banknotes, which provides a basis for subsequent banknote counting processing.
附图说明Description of drawings
图1所示为本实用新型的存取款循环机的钞票识别模块的结构示意图；Fig. 1 shows the structural representation of the banknote identification module of the deposit and withdrawal recycling machine of the present utility model;
图2所示为本实用新型的用于钞票厚度的霍尔式检测装置的结构示意图；Fig. 2 shows the structure schematic diagram of the Hall-type detection device for banknote thickness of the present invention;
图3所示为信号放大电路的电路示意图。Figure 3 shows a schematic circuit diagram of the signal amplifying circuit.
具体实施方式Detailed ways
以下结合附图和具体实施例对本实用新型作进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本实用新型，并不用于限定本实用新型。Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.
如图1所示，本实用新型的存取款循环机的钞票识别模块，包括从钞票入口向钞票出口依次间隔设置的图像采集传感器2、磁信号传感器3和厚度传感器4，以及两两成对分别间隔设置在图像采集传感器前部和厚度传感器后部的四个光电断路器1，以及主控制器，所述的主控制器分别与所述的图像采集传感器、磁信号传感器和厚度传感器以及光电断路器通讯连接。其中，进口侧和出口侧是依据钞票沿通道行进的方形进行的定义，图像采集传感器为高速接触式图像采集传感器，可有效采集识别钞票的冠字号，所述的磁信号传感器可采集并判断钞票的磁条信息，提高了钞票采集的数据量，为后续处理提供充足的数据支持。即，钞票图像传感器和钞票磁信息传感器采集的钞票信息能提供钞票真伪检测、清分检测等的原始数据，经过钞票识别算法处理，获取钞票的相应信息，进行后续处理钞票识别模块的主体结构，如空间布局和钞票行进路径、驱动方式等与现有技术类似，在此不再展开描述。As shown in Figure 1, the banknote identification module of the deposit and withdrawal recycling machine of the present utility model comprises the image acquisition sensor 2, the magnetic signal sensor 3 and the thickness sensor 4 that are arranged at intervals from the banknote inlet to the banknote outlet successively, and pairwise Four photoelectric circuit breakers 1 arranged at intervals at the front of the image acquisition sensor and the rear of the thickness sensor, and a main controller, the main controller is connected to the image acquisition sensor, the magnetic signal sensor, the thickness sensor and the photoelectric circuit breaker respectively. Circuit breaker communication connection. Among them, the entrance side and the exit side are defined according to the square of banknotes traveling along the channel. The image acquisition sensor is a high-speed contact image acquisition sensor, which can effectively collect and identify the serial number of banknotes. The magnetic signal sensor can collect and judge banknotes. The magnetic stripe information increases the amount of data collected by banknotes and provides sufficient data support for subsequent processing. That is, the banknote information collected by the banknote image sensor and the banknote magnetic information sensor can provide the original data of the banknote authenticity detection, sorting detection, etc., and after the banknote recognition algorithm processing, the corresponding information of the banknote is obtained for subsequent processing. The main structure of the banknote recognition module , such as the spatial layout, banknote travel path, driving mode, etc. are similar to the prior art, and will not be described here.
具体地说，如图2-3所示，本实用新型的用于钞票厚度的厚度传感器，包括与随动辊组件随动的磁铁，与所述的磁铁对应地固定设置在其上方的霍尔传感器，即霍尔传感器不随随动辊动作，所述的霍尔传感器和磁铁构成的霍尔模组用于将由钞票的厚度引起的磁通量变化转换成电压信号；检厚信号放大电路，用于将霍尔传感器输出电压信号放大至检测范围内；检厚通道选择电路，用于将信号放大电路处理后的信号进行多通道的切换并连接到信号采集电路；检厚控制器，用于接收信号采集电路输出的数字信号并通过外部接口输出给主控制器，同时产生通道选择电路的切换控制信号。其中，在设备中，多个浮动辊组件间隔地成列排布并与下方的基准辊一一对应，每对浮动辊组件和基准辊之间构成钞票通过通道，在钞票通过时，浮动辊组件可对通过的钞票对应的区域厚度反应，这样能得出是否叠钞、孔动，折边等情况。即，浮动辊组件通过枢接点(或枢接轴)与机体铰接，浮动辊包括支架和铰接在支架上的浮动辊，浮动辊与基准辊接触并允许钞票通过，支架与机体间设置有压簧使得浮动辊与基准辊之间保持预定的压力，在支架上设置有磁铁，该磁铁与霍尔传感器对应。Specifically, as shown in Figure 2-3, the thickness sensor used for the banknote thickness of the present invention includes a magnet that moves with the follower roller assembly, and a Hall that is fixedly arranged above it correspondingly to the magnet. sensor, that is, the Hall sensor does not move with the follower roller, and the Hall module composed of the Hall sensor and the magnet is used to convert the magnetic flux change caused by the thickness of the banknote into a voltage signal; The Hall sensor output voltage signal is amplified to the detection range; the thickness inspection channel selection circuit is used to switch the signal processed by the signal amplification circuit to multi-channel and connect to the signal acquisition circuit; the thickness inspection controller is used to receive signal acquisition The digital signal output by the circuit is output to the main controller through the external interface, and at the same time, the switching control signal of the channel selection circuit is generated. Among them, in the equipment, a plurality of floating roller assemblies are arranged in a row at intervals and correspond to the reference rollers below. Each pair of floating roller assemblies and the reference rollers form a banknote passing channel. When the banknote passes, the floating roller assembly It can respond to the thickness of the area corresponding to the passed banknotes, so that it can be obtained whether the banknotes are folded, the hole is moved, the edge is folded, etc. That is, the floating roller assembly is hinged with the body through a pivot point (or pivot shaft), the floating roller includes a bracket and a floating roller hinged on the bracket, the floating roller contacts the reference roller and allows banknotes to pass through, and a compression spring is arranged between the bracket and the body To maintain a predetermined pressure between the floating roller and the reference roller, a magnet is arranged on the support, and the magnet corresponds to the Hall sensor.
具体地说，所述的检厚控制器为FPGA(可编程逻辑器件)，所述的检厚通道选择电路为数据选通模块，如74HC4051，FPGA(可编程逻辑器件)和数据选通模块74HC4051之间设置有电压转换模块，如SN74LVCC3245。即FPGA(可编程逻辑器件)和74HC4051之间用SN74LVCC3245实现3.3V电平和5V电平的转换。所述的检厚信号采集电路，即AD采集电路优选为芯片ADS7950，以进行高精度的模数转换。其中，所述的检厚信号放大保持电路包括信号放大电路和信号保持电路，所述的检厚信号放大电路为一级放大电路，如采用一个高速运算放大器，同时在高速运算放大器的输出电阻上并联有增益电容以实现开环增益，此与现有技术类似，如采用图3所示。Specifically, the thickness inspection controller is FPGA (programmable logic device), and the thickness inspection channel selection circuit is a data gating module, such as 74HC4051, FPGA (programmable logic device) and data gating module 74HC4051 A voltage conversion module, such as SN74LVCC3245, is arranged between them. That is, between FPGA (programmable logic device) and 74HC4051, use SN74LVCC3245 to realize the conversion between 3.3V level and 5V level. The said thickness inspection signal acquisition circuit, that is, the AD acquisition circuit is preferably a chip ADS7950 to perform high-precision analog-to-digital conversion. Wherein, the described thickness inspection signal amplifying and holding circuit comprises a signal amplifying circuit and a signal holding circuit, and the described thickness inspection signal amplifying circuit is a first-stage amplifying circuit, such as adopting a high-speed operational amplifier, and at the same time on the output resistance of the high-speed operational amplifier Gain capacitors are connected in parallel to realize open-loop gain, which is similar to the prior art, as shown in FIG. 3 .
本实用新型的厚度传感器功能稳定且响应速度快，能够高精度检测钞票的厚度。本实用新型中钞票识别模块的多组霍尔传感器采用并排排列，尽可能多的获取每张钞票各个位置的钞票厚度信息，能够检测出钞票的状态有破洞、粘胶带等，配合图像传感器可给出每张钞票的厚度，破洞，粘胶带等信息，而且采用霍尔传感器带来高精度的测量结果，具备同时识别出0张、1张、2张、3张、4张、5张的功能，为发生叠张时进行数据修正提供了基础。控制器的电气接口为高速的SPI通信方式，能达到20Mb/s的传输速度，方便主控系统实时更新测量数据。The thickness sensor of the utility model has stable function and fast response speed, and can detect the thickness of banknotes with high precision. In the utility model, multiple sets of Hall sensors of the banknote identification module are arranged side by side to obtain as much banknote thickness information as possible at each position of each banknote, and can detect the state of the banknote with holes, sticky tape, etc., and cooperate with the image sensor It can give information such as the thickness, holes, adhesive tape, etc. of each banknote, and the Hall sensor is used to bring high-precision measurement results, and it can simultaneously identify 0, 1, 2, 3, 4, The function of 5 sheets provides a basis for data correction when overlapping sheets occur. The electrical interface of the controller is a high-speed SPI communication method, which can reach a transmission speed of 20Mb/s, which is convenient for the main control system to update the measurement data in real time.
所述的光电断路器，即光电对射传感器，居中且保持间隔地设置在钞票识别模块的进口和出口，其用于检测钞票通过并触发其他各传感器的信号采集，即，钞票检测模块通过该光电对射传感器得知钞票达到，然后根据钞票的传送速度，可以得知何时开始传感器信号的数据采集，也就是说为中间各传感器提供一个时间上的参考。同时，为检测钞票行进过程中，因为胶带或者其他原因造成的倾斜，倾斜之后会导致各传感器的测量数量发生偏差，尤其是会影响图像采集传感器的冠字号采集，设定钞票最大的允许斜度α，两个光电断路器与钞票识别模块的进口边平行设置，即与图像采集传感器等间距设置，设该间距为H，进口侧的两个光电断路器的间距为W，光电断路器与图像采集传感器该侧的外侧边间距为L，则H≥(W*tanα+L*tanα)，这样能有效避免钞票跑到图像采集传感器的可采集区外侧，造成冠字号采集不全，当两个光电断路器的信号显示该钞票的倾斜角过大时，则可将该张钞票退回以避免出现存钞故障。出口处的两个光电断路器设置间距和居中方式与进口处相同，同样可以反馈出出口时的倾斜角度，如果出口时倾斜角度过大，同样可以采取退钞处理以避免后续存钞错误产生。The photoelectric circuit breaker, that is, the photoelectric through-beam sensor, is centrally and spaced at the entrance and exit of the banknote identification module, and it is used to detect the passage of the banknote and trigger the signal collection of other sensors, that is, the banknote detection module passes through the The photoelectric through-beam sensor knows that the banknote arrives, and then according to the conveying speed of the banknote, it can know when to start the data collection of the sensor signal, that is to say, provide a time reference for the middle sensors. At the same time, in order to detect the inclination caused by tape or other reasons during the banknote travel, the measurement quantity of each sensor will deviate after the inclination, especially it will affect the serial number acquisition of the image acquisition sensor, set the maximum allowable slope of the banknote α, two photoelectric circuit breakers are set parallel to the entrance side of the banknote recognition module, that is, they are set at an equal distance from the image acquisition sensor. Let the distance be H, and the distance between the two photoelectric circuit breakers on the entrance side is W. The photoelectric circuit breaker and the image The distance between the outer sides of the acquisition sensor side is L, then H≥(W*tanα+L*tanα), which can effectively prevent banknotes from running outside the collectable area of the image acquisition sensor, resulting in incomplete collection of the serial number. When the signal of the photoelectric circuit breaker shows that the inclination angle of the banknote is too large, the banknote can be returned to avoid banknote deposit failure. The setting distance and centering method of the two photoelectric circuit breakers at the exit are the same as those at the entrance, and the inclination angle at the exit can also be fed back. If the inclination angle at the exit is too large, the banknote refund process can also be adopted to avoid subsequent banknote deposit errors.
本实用新型的钞票识别模块，通过两对光电断路器对钞票的进出角度进行判断，有效保证中间冠字号采集和磁条采集以及厚度采集的有效性，避免出现噪声数据，而且采用霍尔式传感器，有效提高了堆叠的判别效果，可以分析出是几张钞票重叠，更为后续钞票计数处理提供基础。The banknote identification module of the utility model judges the angle of entry and exit of banknotes through two pairs of photoelectric circuit breakers, effectively guarantees the effectiveness of the middle serial number collection, magnetic strip collection and thickness collection, avoids noise data, and uses Hall-type sensors , which effectively improves the discrimination effect of stacking, and can analyze the overlap of several banknotes, which provides a basis for subsequent banknote counting processing.
以上所述仅是本实用新型的优选实施方式，应当指出的是，对于本技术领域的普通技术人员来说，在不脱离本实用新型原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本实用新型的保护范围。The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made, these Improvement and retouching should also be regarded as the protection scope of the present utility model.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520307468.5UCN204740658U (en) | 2015-05-13 | 2015-05-13 | Banknote recognition module of deposit and withdrawal recycler |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520307468.5UCN204740658U (en) | 2015-05-13 | 2015-05-13 | Banknote recognition module of deposit and withdrawal recycler |
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| CN204740658Utrue CN204740658U (en) | 2015-11-04 |
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| CN201520307468.5UExpired - LifetimeCN204740658U (en) | 2015-05-13 | 2015-05-13 | Banknote recognition module of deposit and withdrawal recycler |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104794803A (en)* | 2015-05-13 | 2015-07-22 | 恒银金融科技有限公司 | Banknote recognition module for deposit and withdrawal circulator |
| CN107025715A (en)* | 2015-12-18 | 2017-08-08 | 冲电气工业株式会社 | Media identification device and automatic transaction device |
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104794803A (en)* | 2015-05-13 | 2015-07-22 | 恒银金融科技有限公司 | Banknote recognition module for deposit and withdrawal circulator |
| CN107025715A (en)* | 2015-12-18 | 2017-08-08 | 冲电气工业株式会社 | Media identification device and automatic transaction device |
| Publication | Publication Date | Title |
|---|---|---|
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address | Address after:300000, Tianjin free trade zone (Airport Economic Zone) West eight road 30 Patentee after:CASHWAY TECHNOLOGY Co.,Ltd. Address before:300308, Tianjin Binhai New Area Airport Economic Development Zone, Central Avenue and West eight road junction Patentee before:CASHWAY TECHNOLOGY Co.,Ltd. | |
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term | Granted publication date:20151104 |