Long-life active electronic tag

Abstract

The invention provides a long-life active electronic tag. In order to overcome the defects of the conventional active electronic tag, such as battery capacity waste and short service life, the invention provides a long-life active electronic tag by combining an active wireless RF (radio frequency) recognition technology with ultra-low power consumption and a capacitor energy storage technology. The power supply system of the active electronic tag consists of a lithium battery and a capacitor energy storage unit, and has such a work mode that the lithium battery supplies power to the capacitor energy storage unit in a continuous small-current manner, and the capacitor energy storage unit supplies power to the work circuit of the active electronic tag in a discharge mode of combining large current and micro-current. The wireless RF microprocessing unit and RF circuit of the active electronic tag are of ultra-low power consumption designs, and use large current only in a small time window during work to transmit the inherent ID (identify) information in the wireless manner; and then the microprocessing unit and the RF circuit enter a dormant state using the micro-current.

Description

Technical field [0001] The invention relates to a realization method suitable for low power consumption active electronic tags. Background technique [0002] The People's Republic of China patents 200420037164.3 "Container electronic label device" and 200810039151.2 "Active RFID radio frequency identification label and reader for container electronic seals" have announced two design methods for active electronic tags, but they all have the following disadvantages: Due to the ultra-low self-discharge characteristics of lithium batteries, active electronic tags use lithium batteries as internal power sources to work. Due to the working principle of lithium battery discharge, the best way to work is to release current smoothly and stably, so that lithium batteries can work The service life reaches the maximum and the power release is the most complete. However, the working mode of the active electronic tag is to transmit information periodically. After a period of time, it wil...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the waste of battery capacity and short service life of traditional active electronic tags, the present invention proposes a method for implementing long-life active electronic tags, the specific content of which includes abandoning the design method of traditional active electronic tags, A capacitive energy storage unit is added between the original power supply system of the active electronic tag and the working circuit, so that the active electronic tag power system composed of lithium batteries does not directly provide power to the active electronic tag working circuit, but first supplies power to the active electronic tag working circuit. The capacitive energy storage unit supplies power, and then the capacitive energy storage unit directly supplies current to the working circuit of the active electronic label

Such a design mechanism makes the lithium battery avoid the use of high current and intermittent working mechanism that is very harmful to cooperate with the working mode of the active electronic tag, and can protect the lithium battery to the greatest extent and exert all the power of the lithium battery, while the capacitance energy The working mechanism of the storage unit needs to be continuously charged and discharged, which can just match the working mode of the active electronic tag, which completely solves the defects of capacity waste and short service life caused by the use of lithium batteries in the active electronic tag.

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