Multi-antenna radio frequency identification device for electronic tags

Abstract

The invention discloses a multi-antenna radio identification device used for an electronic tag. An antenna activation source emits out a low frequency activation signal according to a set operating mode, a double frequency radio frequency electronic tag receives the low frequency activation signal, analyzes the low frequency activation signal and adds an intensity identification signal and electronic tag ID information to the analyzed low frequency activation signal so as to form a high frequency coding signal. The antenna activation source comprises a memory, a low frequency radio frequency circuit, a plurality of low frequency antennas connected with the low frequency radio frequency circuit, a power control circuit located between the low frequency radio frequency circuit and a main control circuit and the main control circuit. The memory is used for storing each low frequency antenna ID code and the antenna activation source ID code. The main control circuit is used for generating a low frequency activation signal including the low frequency antenna ID codes, the antenna activation source ID code and operating mode information through the low frequency radio frequency circuit by using the low frequency antenna ID codes and the antenna activation source ID code from the memory. According to the invention, the precise positioning is realized, the identification distance can be adjusted and the coverage of the low frequency signal is widened.

Description

technical field [0001] The invention relates to the field of radio frequency identification, in particular to a multi-antenna radio frequency identification device for electronic tags. Background technique [0002] In recent years, the Internet of Things is a new technology that people generally pay attention to. As a key technology of the Internet of Things, radio frequency identification technology has developed rapidly. The management of complex environments such as communities, mining areas, and highways has always been highly valued by the relevant state departments, but disputes and even accidents caused by negligent management still occur frequently, causing unnecessary losses of many individuals and the interests of the country. How to strengthen management measures, how to accurately, real-time, and quickly grasp the status of non-residents in residential areas, the distribution and flow of personnel in mining areas, the efficiency of road tolls, and the efficient o...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a multi-antenna radio frequency identification device for electronic tags. The multi-antenna radio frequency identification device increases the coverage of low-frequency signals, improves the stability of low-frequency signals, solves the interference problem between antennas, and can realize accurate Adjustable positioning and recognition distance, solving the problem of small signal coverage of a single antenna activation source, multiple card readers reading the same electronic tag at the same time and being unstable, and reducing power consumption, prolonging the service life of the battery, and being able to Long-term trouble-free operation

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