Passive Smart Tag With UWB Positioning for Vehicle Parts
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Solution Overview
Problem
Conventional passive RFID tags are limited in recognizing the position of parts due to their short transmission distance and inability to provide position information, making it difficult to efficiently manage inventory and prevent misplacement in vehicle manufacturing.
Innovation Solution
A smart tag incorporating an ultra-wideband (UWB) circuit and a no-power circuit that amplifies electromagnetic induction power to transmit both identification and position information, enabling long-distance recognition without a battery, integrated with a radio frequency identification (RFID) circuit for efficient part identification and tracking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If passive RFID tag is used for identification, then cost is reduced and battery life is eliminated, but transmission distance is short and position recognition capability is lost
Solution Approach 1:
The patent combines passive RFID tag with UWB (Ultra-Wideband) technology to create a hybrid system that maintains the cost advantages and battery-free operation of passive RFID while achieving extended transmission distance and position recognition capabilities through the integrated UWB module
Solution Approach 2:
The smart tag system performs multiple functions simultaneously: identification (RFID), position recognition (UWB), and long-distance communication, making the device universal for various tracking and management applications without requiring separate devices
2Quantity of substance
If active RFID is used for long distance transmission, then transmission distance is extended, but cost increases and battery life is limited
Solution Approach 1:
The system uses electromagnetic energy from the reader to power the passive RFID tag and UWB circuit, eliminating the need for a battery while enabling long-distance transmission through the UWB signal generated from the harvested energy
3Loss of information
If passive RFID tag transmits only ID information, then device complexity is minimized, but position recognition capability is lost
Solution Approach 1:
The patent merges passive RFID with UWB technology to enable the tag to transmit both identification information and position data, with the UWB module providing additional positioning capabilities that complement the RFID identification function
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The smart tag system effectively manages inventory and prevents misplacement by providing stable power to both RFID and UWB circuits, allowing for accurate identification and tracking of parts across a vehicle production line, enhancing supply chain efficiency and reducing errors.
Implementation Method 1
a no power circuit connected to the antenna and configured to amplify driving power generated by an electromagnetic induction phenomenon when the electromagnetic wave is received from the antenna
Data Source
AI summary
A passive smart tag attached for recognition of a part may include an antenna configured to receive electromagnetic wave from a reader; a no power circuit connected to the antenna and configured to amplify driving power generated by an electromagnetic induction phenomenon when the electromagnetic wave is received from the antenna; a radio frequency identification circuit connected to the no power circuit and configured to read tag identification information related to the smart tag stored in a memory according to the driving power to transmit the tag identification information to the reader; and an ultra-wideband circuit connected to the no power circuit and configured to generate an ultra-wideband signal used for recognition of a tag position in a response to the driving power to transmit the ultra-wideband signal to the reader.