Anti-interference double-frequency radio frequency identification device

Abstract

The invention discloses an anti-interference double-frequency radio frequency identification device. The device comprises a double-frequency radio frequency electronic label and further comprises a low-frequency receiving antenna, a low-frequency circuit, a high-frequency circuit and a high-frequency antenna. A microcontroller storing an ID number of the electronic label realizes switching between dormant and starting states through low-frequency information signals, and the microcontroller is programmed in such a manner that the microcontroller reads the low-frequency information signals and generate intensity identification signals according to the intensity; the microcontroller analyzes and extracts the low-frequency information signals and generates signal source codes according to the low-frequency information signals; a timer is stopped in a time interval, and under the stop state, the microcontroller excessively starts the high-frequency circuit, stops the high-frequency circuit and starts the low-frequency circuit, and when the continuous time reaches the time interval, the stopping state of the timer is stopped. According to the invention, the signal coverage range is relatively wide, the signal stability is high, the device is easy to realize, the circuit is simple, the cost is low, popularization and application are facilitated, the emission power is adjusted in many modes, and the installation and construction are more flexible and more convenient.

Description

technical field [0001] The invention relates to the field of radio frequency identification, in particular to an anti-jamming dual-frequency radio frequency identification device. 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 operat...

AI Technical Summary

Problems solved by technology

[0004] The invention provides an anti-interference dual-frequency radio frequency identification device, which increases the coverage of low-frequency signals, improves the stability of low-frequency signals, solves the interference problem between antennas, and can realize precise positioning , Adjustable recognition distance, solve the problem of small signal coverage of a single antenna activation source, multiple card readers read the same electronic tag at the same time and it is unstable, and reduce power consumption, prolong the service life of the battery, and can be used for a long time Trouble-free operation

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