Paper money has played a vital role in national economic activities. The appearance of counterfeit banknotes will endanger the society and disrupt the normal economic order. Therefore, new requirements are put forward for the counterfeit counterfeiting function of the banknote counter. Starting from the anti-counterfeiting features of the new version of banknotes (RBM), the commonly used banknote (RBM) verification technology is introduced, and the verification functions of the banknote counter in fluorescence, magnetism, infrared, and image recognition are analyzed, and the comprehensive signal is extracted. The technology has made preliminary predictions, and briefly introduced new forgery verification functions such as weak magnetic encoding, fluorescent barcode ", W" anti-counterfeiting signal reading. These technologies will play a positive role in the development of counterfeit detectors.
With the rapid development of my country’s national economy, various economic activities have become more frequent and industrial In business, taxation, trade and other departments and daily activities, the cash flow is increasing, and the circulation cycle is getting shorter and shorter. With my country's accession to the WTO, foreign banknotes such as the US dollar, the euro, and the Japanese yen will also form a certain amount of circulation in the country.
At present, cash circulation in my country is dominated by banknotes. Paper currency has light weight and large face value,It is easy to carry and other advantages, so it has been widely used for a long time. However, for a long time, some criminals on the
market have used fake currency and altered currency to gain profits and disrupt financial order. How to distinguish between genuine and counterfeit banknotes has become a topic of concern to countries, banks, merchants, and consumers.To accurately identify the authenticity of banknotes, sophisticated instruments must be used. In recent years, with the development of science and technology, the development of various banknote counterfeit machines and intelligent counterfeit detectors has been successful.The authenticity of banknotes played a positive role. Mainly discuss the development status and development trend of the banknote counterfeiting technology applied on the banknote detector.
Preliminary Research on the Development Trend of Counterfeit Counterfeit Counterfeiting Technology
The money counter is a dynamic counterfeit device. Due to its unique structure, in completion
The counterfeit counterfeit of banknotes is also verified while counting the money. Compared with the simple static counterfeit counterfeiting instrument, the function is more powerful. At the same time, the signal collected by the special sensor is analyzed and processed by the computer to identify the true and false, and the reliability is greatly improved compared with the static authenticator.
As mentioned above, the banknote counter can easily achieve ultraviolet fluorescence, magnetic ink, and infrared
And the function of authenticating forgery of image analysis. The currency counters currently on the market have at least two or more basic functions. In order to meet the needs of financial office automation and desktopization, the volume of the money counter is getting smaller and smaller, and the internal structure is getting simpler and simpler. But the function is getting more and more powerful, because how to reasonably arrange the sensor and the electronic control part under the premise of satisfying the traditional function is the main concern in the design. At present, some manufacturers' equipment integrates all sensors into one device, saving space. How many sensors should be integrated, that is, how many intermediate functions should the banknote counter have? Because the banknote has four states (front left, front right, back right, back left) during the counting process, there are only two basic functions Obviously, it cannot meet the needs of the market. For example, because the renminbi in circulation on the market is not only the fifth set of renminbi, and the degree of new and old renminbi is different, and the wear and tear are different, the mixture of new and old versions of renminbi puts higher requirements on the counterfeit counterfeit function of the banknote counter. According to the characteristics of the renminbi and the Hong Kong dollar, there are at least four other technologies that can be used for authenticating banknotes.
3.1 Technology of weak magnetic coding forgery verification
A special sensor is used to detect the internal information of the magnetic security thread. And will get
Use computers to analyze the information to determine the authenticity. This method has the characteristics of reliability, high accuracy, and wide application.
3.2 Fluorescence coding technology
At present, the Hong Kong dollar has adopted fluorescent barcode technology to improve the anti-counterfeiting ability of the Hong Kong dollar
To a new level, of course, a corresponding device is also needed to complete the reading of this information and realize the function of forgery detection.
3.3 Magnetic barcode technology
In some currencies, magnetic bar code technology is applied. This bar code does not have any characteristics under light. Only through a specially set sensor device can the corresponding information be accurately read. This also increases the difficulty of making counterfeit banknotes. Improve the security of banknote circulation.
3.4 Infrared information
Infrared images are used in banknotes. Infrared laser technology has become more and more. Especially the infrared light has a wide range of wavelengths (more than 780 nanometers to 5000 nanometers).
In addition, 5000 nanometers and above belong to far-infrared) In such a wide wavelength range, select a substance that has a migration to the infrared wavelength to excite another infrared wave. Such anti-counterfeiting technology is difficult to measure.