Radio frequency tag identification system based on multiple antennas

Abstract

The present invention discloses a radio frequency tag identification system based on multiple antennas. An antenna activation source comprises a memory configured to store the ID coding of each low-frequency antenna and the ID coding of the antenna activation source, a low-frequency radio-frequency circuit and 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 master control circuit is configured to regulate the antenna transmitting power. A double-frequency radio frequency identification includes: a low-frequency receiving antenna configured to receive low-frequency radio-frequency signals from the antenna activation source and generate inductive signals consisting of signal source codes; a low-frequency circuit configured to generate low-frequency information signals according to the inductive signals from the low-frequency receiving antenna; a high-frequency circuit configured to modulate intensity identification signals, signal source codes and radio frequency identification ID numbers to coding signals; and a high-frequency antenna configured to emit the coding signals to the space through a high-frequency carrier. The radio frequency tag identification system based on multiple antennas is able to increase the coverage area of low-frequency signals and improve the stability of low-frequency signals, the signal coverage area is adjustable, and radio frequency tag identification system based on multiple antennas may be suitable for more different application environments.

Description

technical field [0001] The invention relates to the field of radio frequency identification, in particular to a multi-antenna-based radio frequency tag identification system. 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 operation o...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a multi-antenna-based radio frequency tag identification system, which increases the coverage of low-frequency signals, improves the stability of low-frequency signals, solves the interference problem between antennas, and can realize Accurate positioning, adjustable recognition distance, solving the problem of small signal coverage of a single antenna activation source, multiple readers reading the same electronic tag at the same time and being unstable, and reducing power consumption, extending battery life. Long-term trouble-free operation

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