Experimental Study On Denomination And Thickness Detection Of RMB

With the development of social economy,the improvement of people's living standard,the increasing circulation and circulation of RMB,and the increasing level of counterfeit money produced by lawless elements,counterfeit money is also emerging,and the quantity and type are increasing year by year trend.Point money detector as a set of notes,counterfeit,clear points and other functions in a favorable tool,you can in the realization of the RMB inventory at the same time to its inspection of false.In the process of RMB circulation,part of the RMB inevitably there is damage,folding and paste the tape and other foreign matter phenomenon.RMB thickness of the true and false and the impact of the thickness of the changes,the thickness of the RMB can be used as a distinction between its true and false,old and new,whether broken and so on the standard and angle,so this paper on the denomination of denomination and thickness of the experimental study for the market changes in the thickness of the yuan Distinguish between true and false,old and new reference.In this paper,the multi-section mechanical thickness sensor and acceleration sensor are used to locate the quantitative value of the RMB,and the high-speed camera is used to collect the movement state of the RMB in the thickness sensor.The motion law is analyzed and compared with the data of the thickness sensor.Finally,Of the safety line magnetic signal was carried out face recognition experiment.In this paper,the RMB denomination identification and thickness testing of the RMB and the RMB thickness detection platform for the Kangyi 9000 model were carried out to provide the basis for distinguishing the damaged,the angle and the adhesive tape according to the change of the thickness of the RMB.This paper mainly completed the following aspects of the work:(1)Introduce the principle of RMB thickness detection and the detection platform,and make a brief introduction to the principle of RMB denomination recognition using safety magnetic signal.(2)In this paper,the experimental study of multi-stage mechanical thickness sensor is carried out.The thickness of RMB is quantitatively detected by 12-stage mechanical thickness sensor.The thickness of RMB is transformed into the corresponding electrical signal by mechanical structure and eddy current principle.Thickness detection.This paper studies the reliability and consistency of the thickness sensor when the thickness of the different positions of the RMB changes,and analyzes the initial large displacement of the shrapnel caused by the mechanical structure of the high speed impact sensor when the paper money enters.(3)Although the multi-stage mechanical thickness sensor has high precision,there are still some shortcomings such as complicated mechanical structure,large volume and high cost.In order to ensure the accurate detection of the adhesive tape on the paper,the mechanical structure is simplified,the volume is reduced and the cost is saved.In this study,the acceleration sensor is used to study the change of the thickness of the RMB.The acceleration sensor is used to collect the RMB Note the note,the normal banknotes and sticky tape paper paper data analysis and comparison,to determine whether the paper sticky adhesive tape.(4)The high speed camera is used to study the movement of RMB in mechanical thickness sensor,and its motion trajectory and mechanical thickness sensor data are compared to verify the experimental results.Taking into account the characteristics of commodity-type cash dispenser,complex structure,compact,is not conducive to high-speed camera to collect the yuan in the thickness sensor in the state of motion,so the use of RMB thickness detection platform for high-speed camera data acquisition and analysis experiments.The platform is based on the counting system of the counting machine to simulate the movement state of the RMB in the thickness sensor.Compared with the real machine,the experimental platform retains the basic sensor under the premise of reducing the movement state of the RMB in the real machine,Simplifies the mechanical structure to facilitate the high-speed camera to observe the acquisition of RMB in the thickness of the sensor in the movement of the state and data.(5)In the realization of the thickness detection at the same time RMB denomination recognition of RMB,the RMB acquisition using the head safety line 5 yuan and 10 yuan,20 yuan,50 yuan,100 yuan and 100 yuan 2015 edition and 6 denominations of the magnetic signal,analyzed 6 kinds of denomination of the safety line signal due to the safety rules,line 10 yuan and 20 yuan of waveform similarity is very high,so the are analyzed.To extract the peak number and peak distance,variance characteristics from the safety line waveform,according to the different characteristics of the different denominations of RMB,randomly selected 600 groups of different denominations of RMB security line data classification experiments,comparing the classification results and the calculation of real denomination,classification accuracy.Data processing and conclusion: the thickness of the RMB in different denominations is different,and the thickness and thickness of the same RMB are also different.The thickness of the RMB is between 0.09mm~0.12 mm.Because the thickness of the RMB is very small,the thickness and the resonant impedance of the sensor output are approximately linear.Using 12 mechanical sensors,the thickness of the RMB can be accurately detected,and the acceleration sensor can be used to detect whether the RMB is glued to the tape.The motion state of the RMB in the thickness sensor is collected by high-speed camera,which is consistent with the output data of the sensor.Using the RMB security line magnetic signal can be more accurate identification of the value of the RMB.This paper studies two yuan by mechanical means thickness measuring method and a recognition method of RMB denomination,the RMB market according to the different thickness to separate the breakage,angle and paste the tape according to the safety line for RMB and RMB denomination recognition has the reference significance.