A lost item search radio frequency tag

By designing radio frequency antennas and electrical appliance structures and using induced current for power supply, the problem of difficult positioning of RFID tags in large-scale environments was solved, enabling a close connection between the tags and goods, providing long-term item tracking capabilities, and improving query efficiency.

CN224609494UActive Publication Date: 2026-08-07JIANGSU KERUITAN ELECTRONICS TECH CO LTD
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Patent Information

Application Number
CN202521981117.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-09-15
Publication Date
2026-08-07
Estimated Expiration
2035-09-15

AI Technical Summary

Technical Problem

In high-volume applications, RFID tags are difficult to locate accurately, resulting in long search times and reduced work efficiency.

Method used

Design a tracking RFID tag comprising an RF antenna, a chip, a rectifier bridge, a ceramic capacitor, a Zener diode, and an electrical appliance. The RF antenna generates AC pulses which are converted into DC current to provide a long-term power supply for the electrical appliance. Combined with a flexible battery and a substrate layer, the tag achieves a tight connection with the goods and is suitable for long-term storage.

Benefits of technology

This technology enables RFID tags to provide item location capabilities throughout the entire process, ensuring long-term effectiveness and making it suitable for goods stored for extended periods. It also prevents tags from becoming invalid due to battery depletion, thus improving search efficiency.

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Abstract

This utility model belongs to the field of radio frequency antenna technology, specifically relating to a location-finding radio frequency tag. The utility model includes: a radio frequency antenna comprising an inductor coil, with a first binding point on one side and a second binding point on the other side; a chip electrically connected to the first binding point; a rectifier bridge, with its input terminal electrically connected to the second binding point; a power supply circuit electrically connected to the output terminal of the rectifier bridge; a ceramic capacitor connected in parallel with the power supply circuit; a Zener diode connected in parallel with the power supply circuit; and at least one electrical appliance connected in parallel with the power supply circuit. This utility model addresses the technical problem of existing tags being difficult to accurately locate in large-scale applications.
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