Multifunctional radio frequency reading-writing device of national legal electronic certificate

Abstract

The invention discloses a multifunctional radio frequency reading-writing device of a national legal electronic certificate, which is formed by a control module, a radio frequency module, a USB (Universal Serial Bus) interface, a driving module, a safety module, a power supply module and an antenna interface. According to the multifunctional radio frequency reading-writing device, the signal to noise ratio of radio frequency communication is not reduced, the output field strength is not reduced and the distortion of a signal is not caused; and the multifunctional radio frequency reading-writing device has a high communication success rate and good certificate compatibility. Meanwhile, the cost of the radio frequency module is greatly reduced; furthermore, through an electronic passport and a second-generation identity card for automatically identifying for entering operations of finding a card, selecting a card, selecting an application and establishing the connection with the card can be finished, so that the card can automatically enter an application layer to do preparation for communication between the card and the application layer; and the automation degree of reading-writing operation is extremely improved, the working efficiency of certificate reading-writing equipment is improved and the market competitiveness is high.

Description

Technical field [0001] The invention relates to a multifunctional radio frequency reading and writing device for national legal electronic certificates, which belongs to the technical field of non-contact IC cards. Background technique [0002] At present, there is no multifunctional radio frequency reading and writing component that can simultaneously read and write electronic passports and read and write functions of China’s second-generation resident ID card (hereinafter referred to as the second-generation ID card). Therefore, if you want to develop it at the same time, The multifunctional document reader that reads and writes electronic passports and second-generation certificates can only stack one electronic passport read-write component and one second-generation card radio frequency read-write component inside the device, and stack their corresponding antennas together. However, The stacked antennas will inevitably influence each other and absorb energy, which will reduce...

AI Technical Summary

Problems solved by technology

[0002] At present, in the prior art, there is no multifunctional radio frequency reading and writing component that can simultaneously read and write electronic passports and China's second-generation resident ID card (hereinafter referred to as the second-generation card). For a multi-functional document reader that reads and writes electronic passports and second-generation cards, only one electronic passport reading and writing component and one second-generation card RF reading and writing component can be stacked inside the device, and the corresponding antennas are stacked together. However, Such stacked antennas will inevitably affect each other and absorb energy, which will reduce the signal-to-noise ratio of radio frequency communication, reduce the output field strength of the antenna, cause distortion of the communication waveform, and lead to communication failure.

Therefore, the communication success rate of such multifunctional document reading devices is not high, and the compatibility with documents is also poor

At the same time, since this type of equipment is realized by using two radio frequency reading and writing components, its cost will naturally be higher, and the volume of the equipment will also be larger

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