Intelligent electronic label system

Abstract

The invention provides an intelligent electronic label system which uses a highly integrated and low cost wireless micropower single chip transceiver to manufacture an intelligent label and a reader-writer respectively. The intelligent label is in a dormant state for a long time and works for an instant after a periodical revival, the reader-writer seizes the instant after the intelligent label is revived to establish a communication contact with the intelligent label through different modes, thereby realizing control management of a system to the intelligent label and other terminal devices connected with the intelligent label with very low average power consumption. The invention also makes that a common button cell battery is not necessary to replace for a plurality of years through flexible regulations to the dormant cycle of the intelligent label, an operating channel, an operation mode, etc. Meanwhile, the invention also greatly accelerates response speed of the intelligent label. The intelligent electronic label system has a simple structure, a long reading and writing distance, low cost, and flexible and convenient use; therefore, intelligent electronic label system can be used as a wireless electronic vehicle license plate, an identification card, etc., and can be used for control management to vehicles, staffs, materials and other remote terminal equipment.

Description

technical field [0001] The invention relates to a wireless micro-power communication technology and a power-saving technology using a battery-driven wireless micro-power communication device. Background technique [0002] Existing electronic tags are mainly used for identification of management objects, while existing active electronic tags are mainly used for long-distance identification and management of targets such as people, objects and vehicles. Its basic working method is to read the code number of the electronic tag on the identified target through radio frequency communication, and compare it with the number of relevant data stored in the computer database in advance to identify and manage the target. Therefore, this The application of this technology must be connected with the relevant database in the computer; [0003] The long-distance electronic tags are divided into two types: active and passive: [0004] Among them, long-distance passive electronic tags (tag...

AI Technical Summary

Problems solved by technology

The problem with this method is: no matter whether the host needs to read the information of the electronic tag or write information to the electronic tag, the electronic tag will work according to the preset working mode and working time, and the host cannot actively Require the electronic tag to change its working mode, for example, require the electronic tag to change the wake-up frequency, shorten the working time after waking up, temporarily extend the working time only when it needs to transmit data, or require the electronic tag not to send information at all for a period of time Wait

As a result, the power consumption will naturally consume a lot, and the service life of the electronic tag battery will be short; in addition, due to the general low-frequency narrow-band communication mode adopted by the existing electronic tags, the communication rate is low and the anti-interference ability is poor, so the bit error The rate is relatively high, and it is not uncommon for a data packet to be retransmitted multiple times, which requires a long working time after waking up, which also increases battery consumption

[0008] In addition, the active electronic tag system using narrow-band general wireless communication is easily disturbed by the outside world. Moreover, due to temperature changes, the deviation of the operating frequency of the crystal oscillator caused by the aging of the crystal oscillator itself, and the possible multipath effect, Doppler Effects, etc., will greatly affect the reliability and stability of the system, especially in those industrial sites with large interference and applications where the identified target is in a fast-moving state

[0009] To sum up, the existing long-distance electronic tag systems are basically limited to the identification of the identity code of the long-distance target by the reader, and then compare the corresponding data in the computer database to realize the management of the identified target. The working method is single, and does not involve the interaction between the reader and the electronic tag according to different actual application needs. This includes that the electronic tag adopts different working methods according to different instructions issued by the reader, for example, changing their own working status, adjust their own transmission power and receiving sensitivity, change their own communication channels or channels, change their own sleep time and wake-up cycle, etc. Moreover, in terms of identity management of long-distance targets, it is also greatly restricted by the service life of the tag battery, as well as the environmental interference caused by the use of narrow-band general communication methods, as well as work stability and reliability, etc. problems

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