In recent years, with the popularization and application of the real-name system, the frequency of use of ID cards has increased day by day. We have to use the ID card reading machine for identity verification in all aspects of travel, going to the bank, living in hotels, etc. The manufacturers that produce ID card reading machines in the market have Many, as the industry leader, VisionChina has been committed to identity certification products and research and development. Next, Shenzhen Huashi Electronic Reading and Writing Equipment Co., Ltd. (referred to as: China Vision Electronics) introduced the basic composition and working principle of the ID card reading machine.
The ID card reading machine is a device that uses non-contact IC card technology to connect with a computer or other device and can read text, photo information and fingerprint information in the resident ID card. It complies with GA 450-2013 "General Requirements for Desktop Resident Identity Card Reader" and complies with GA 467-2013 "Resident ID Card Verification Security Control Module Interface Technical Specification" and is also compatible with ISO 14443 Type B standard. It supports the resident ID card, the permanent residence permit for foreigners, and the reading of the residence permit for Hong Kong, Macao and Taiwan residents.
1. The basic composition of the ID card reading machine
The ID card reading machine is mainly composed of a security control module SAM, a main control chip MCU, and an RF radio circuit.
The RF RF circuit is an important unit for data exchange between ID card readers and documents. It interacts wirelessly with the document via an antenna. Its role is to establish a high-frequency energy field to activate the document and provide energy, then modulate and transmit the signal, send the data to the document, and then accept and demodulate the response signal returned by the document.
The main control chip MCU is the center of the card reader, and its internal software controls the card reader module to operate the card, the security control module and the card encryption information.
2, ID card reading machine works
Its working principle is that the PC forwards the card reading instruction to the master MCU through the SAM module, and the master MCU communicates with the ID card through the RF module, and decodes the read ID card information through the SAM module and returns it to the PC.
When the card reader communicates with the ID card, it sends a set of fixed-frequency electromagnetic waves to the ID card. The card has an IC series resonant circuit with the same frequency as the card reader, so that the LC resonant circuit is excited by the electromagnetic wave. Resonance is generated so that there is a charge in the capacitor. At the other end of the charge, a one-way electronic pump is connected to store the charge in the capacitor to another capacitor. When the accumulated charge reaches 2V, the capacitor can be used as a power source to supply operating voltage to other circuits. Send data from the card or accept data from the reader. Therefore, when reading the card, you need to put the ID card in the card reading area, and you can't shake it at will, so that the voltage inside the ID card can be stabilized, thus ensuring the card reading is normal.
3, card reader selection
At present, ID card reading machines are widely used in banking, telecommunications, transportation, railway, civil aviation, hotels, etc. Due to the uncertainty of the needs of front-end customers, card readers are divided into desktop ID cards and built-in ID cards. Read the machine two.
CTV's desktop resident ID card reading machine CVR-100U, CVR-100UC can be directly connected to the computer through the USB cable to read ID card information.
The built-in resident ID card reader is mainly used in integrated devices, and it functions as a component of the device. From the working principle of the card reader, the alternating electromagnetic field induced by the card reader is easily attenuated by the eddy current of the metal, so that the signal strength is greatly weakened, resulting in read failure. Therefore, when the built-in resident ID card reading device is applied to the integrated device, it is necessary to avoid metal devices around the antenna, and other things that do not interfere with the antenna, such as acrylic.
The above is about the basic composition and working principle of China Vision ID card reading machine. Welcome to discuss with industry customers and China Vision Electronics. As early as 2004, China Vision Electronics was first listed by the Ministry of Public Security as one of the ten “second-generation resident ID card reading (verification) machine-designated production enterprisesâ€, as a leading enterprise in China’s identity identification, in the field of information technology and identity identification. Technical strength and rich experience, in the second generation of resident ID card reading industry sales of more than 2 million sets for 16 consecutive years, and in the public security, political and legal, industry and commerce, taxation, customs, human society, transportation, finance, petrochemical, communications, aviation and other industries The range of applications, sales and services has been covered nationwide and has been recognized by customers and users in the industry.
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