A device for non-contact power supply for electronic display tags using spatial electromagnetic coupling

Abstract

The invention discloses a device for conducting non-contact power supply on an electronic display tag by space electromagnetic coupling. The device comprises a high-frequency coupling power supply coil, a high-frequency power signal generator and an electronic display tag powered module. The high-frequency coupling power supply coil is arranged around the electronic display tag powered module and is connected with the high-frequency power signal generator, the high-frequency power signal generator generates a high-frequency AC signal, an alternating magnetic field is generated when the high-frequency AC signal passes through the high-frequency coupling power supply coil, the electronic display tag powered module senses the alternating magnetic field and obtains electric energy through oscillation tuning, and accordingly the electronic display tag is powered up. The device for conducting non-contact power supply on the electronic display tag by space electromagnetic coupling meets the power supply requirement of the electronic display tag in actual use, and the electronic display tag can obtain stable, sufficient and reliable power supply in a non-contact coupling mode.

Description

technical field [0001] The invention relates to a power supply device for electronic display labels, in particular to a device for non-contact power supply for electronic display labels by using space electromagnetic coupling. Background technique [0002] At present, in warehousing, materials, retail and other industries, electronic display labels with new electronic inks and TFT liquid crystal display screens are gradually replacing traditional paper labels. Due to the advantages of fast update speed, high management efficiency, low error rate, and low operating costs, electronic display tags will become the first choice for information display in the future storage, material, and retail business fields. [0003] However, in the fields of warehousing, logistics, and retail business, when electronic display tags are used, how to obtain long-term, sufficient and reliable power supply for tags has become a difficult problem. Traditional battery-powered methods are limited by...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a non-contact power supply device for electronic display labels using spatial electromagnetic coupling that is not limited by battery power in view of the defects that electronic shelf labels need to use batteries and cannot run for a long time in the prior art

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