System and method for collecting multi-features of banknotes based on fpga

Abstract

The invention discloses a paper currency multi-feature collecting system and a method based FPGA and relates to the inspection device technique field of paper currency. The collecting system comprises an encoder, a paper currency conveyer, an infrared sensor, a magnetic sensor, an image sensor, a thickness sensor, FPGA and a data processing unit, the image sensor comprises an upper image sensor and a lower image sensor being symmetrically formed at the upper side and the lower side; the paper currency conveyer is the conveyor belt type conveyer. The system and the method can collect the image feature, magnetic feature and thickness feature for paper currency based on FPGA, the collected feature data bases on the same corresponding position coordinate system, the coordinate information of the feature data is convenient for registering multi-sensor pixel-level information and the configuration precision reaches the pixel level.

Description

technical field [0001] The present invention relates to the technical field of banknote inspection devices, in particular to an FPGA-based banknote multi-feature acquisition system and method. Background technique [0002] According to the banknote circulation standards of the People's Bank of China, counterfeit banknotes, banknotes with adhesive tape, and defaced banknotes are not suitable for circulation in the market. Therefore, in order to effectively identify whether banknotes are suitable for circulation, it is necessary to obtain various features of banknotes, such as image features, magnetic features, and thickness features. Reconfigurable technology refers to the use of reconfigurable resources in the system under the control of software to rebuild a new system according to the needs of the application to achieve high performance close to the design of dedicated hardware, so that the system is flexible, High performance, upgradeable and other advantages. [0003] ...

AI Technical Summary

Problems solved by technology

[0005] Most of the research on the existing banknote feature collection system focuses on the collection of a single anti-counterfeiting feature of the banknote image; or the collection of multiple anti-counterfeiting features is relatively independent, and the collected feature data has no corresponding position information, and the registration of multiple feature information is difficult. , and the configuration accuracy is difficult to guarantee; or the data acquisition unit is implemented based on a non-reconfigurable device, when the sensor upgrade results in a change in the data communication protocol, the original hardware system cannot adapt to the change through reconfiguration, only the hardware design can be modified

For example, "Paper Money Verifier Image Acquisition and Processing Method and Device", publication number: CN102568081A; only studied the image acquisition of banknotes alone, resulting in incomplete collection of banknote circulation characteristics, which is not convenient for multi-sensor data fusion identification

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