Double-frequency electronic label system

Abstract

The invention discloses a double-frequency electronic label system. An antenna activation source of the system comprises a memory used for storing each low-frequency antenna ID code and an antenna activation source ID code; a low-frequency radio frequency circuit and a plurality of low-frequency antennas connected with the low-frequency radio frequency circuit, wherein the low-frequency radio frequency circuit comprises an and gate and a power MOS tube driving module which are connected in series, the and gate is used for modulating a data signal from a main control circuit into a 125 KHz carrier signal and forming a low-frequency activation signal; a power control circuit arranged between the low-frequency radio frequency circuit and the main control circuit, wherein the power control circuit is used for adjusting the emission power of the low-frequency antennas; and the main control circuit, wherein according to a set work mode, the main control circuit utilizes the low-frequency radio frequency circuit to generate low-frequency activation signals containing the low-frequency antenna ID codes, the antenna activation source ID code and work mode information based on the low-frequency antenna ID codes and the antenna activation source ID code received from the memory. According to the invention, the coverage range of the low-frequency signals is increased, the stability of the low-frequency signals is improved, and the interference problem among the antennas is solved.

Description

technical field [0001] The invention relates to the field of radio frequency identification, in particular to a dual-frequency electronic label 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 of emergency rescue are ...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a dual-frequency electronic label system. The dual-frequency electronic label system 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 and identification distance. Adjust and solve the problem of small signal coverage of single antenna activation source, multiple card readers read the same electronic tag at the same time and be unstable, and reduce power consumption, prolong the service life of the battery, and can operate without failure for a long time

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