RFID Tag Triggering via Enhancing Surface Wave-guide Coaxial Cable
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current radio frequency identification (RFID) systems require manual scanning of tags, leading to high labor costs and limited triggering range, making them inefficient for automatic triggering of electronic tags.
Innovation Solution
A radio frequency identification device utilizing an enhancing surface wave-guide coaxial cable structure with a breach region and matching resistor to generate and transmit electromagnetic waves, allowing for automatic triggering of RFID tags over a wider range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual scanning method is used to read RFID tags, then reading accuracy can be ensured, but labor cost increases and triggering range is limited
Solution Approach 1:
The patent replaces the manual mechanical scanning operation with an automated electromagnetic field-based triggering system. The coaxial cable structure generates electromagnetic waves that automatically trigger RFID tags within range, eliminating the need for manual scanning while expanding the effective triggering range and improving reading efficiency.
Solution Approach 2:
The patent introduces an intermediary electromagnetic field generation system between the reader and RFID tags. The enhancing surface wave-guide coaxial cable structure acts as a mediator that creates an extended electromagnetic field zone, enabling automatic triggering of tags without direct line-of-sight or manual intervention.
2Productivity
If automatic triggering method is implemented, then labor cost is reduced, but system cost becomes too high to apply
Solution Approach 1:
The patent modifies the electrical parameters and structural configuration of the coaxial cable to create breach regions with matching resistors. These parameter changes enable the cable to function as a surface wave guide that generates electromagnetic fields for automatic RFID triggering, achieving cost-effective automation by modifying existing cable infrastructure rather than deploying complex new systems.
Solution Approach 2:
The patent makes the coaxial cable structure multi-functional by enabling it to serve both as a signal transmission medium and as an electromagnetic field generator for RFID triggering. This universal application reduces system complexity and cost by eliminating the need for separate automated triggering hardware.
3Device complexity
If general coaxial cable is used, then structure is simple, but surface wave-guide effect is insufficient for effective RFID triggering
Solution Approach 1:
The patent applies local quality modification by creating specific breach regions at particular locations along the coaxial cable rather than uniformly changing the entire cable structure. These localized modifications with matching resistors are strategically placed to generate the necessary electromagnetic fields while maintaining the simplicity of the overall cable system.
Solution Approach 2:
The patent segments the coaxial cable structure by introducing discrete breach regions with matching resistors at specific intervals. This segmentation allows the cable to function as a surface wave guide by creating controlled impedance transitions that generate electromagnetic fields, improving the surface wave-guide effect while maintaining structural simplicity.
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 solution reduces labor costs and enhances the surface wave-guide effect, enabling automatic triggering of RFID tags within a radius of 1 to 100 cm, improving efficiency and ease of use while maintaining lower costs.
Implementation Method 1
the current builds up an electromagnetic (EM) wave while flowing through the at least one breach region
Implementation Method 2
the EM wave is transmitted along the outer conducting layer of the coaxial cable until to the matching resistor, such that the surface wave-guide effect can be enhanced
Implementation Method 3
the EM wave generated by the current leaks out of the coaxial cable, and builds up an electromagnetic field
Data Source
AI summary
A radio frequency identification electronic device with enhancing surface wave-guide effect includes a host or a programmable single IC, an identification transmitting/receiving device electrically connected to the host or the programmable single IC for generating a current, and an enhancing surface wave-guide coaxial cable structure. The enhancing surface wave-guide coaxial cable structure comprises a coaxial cable having at least one breach region without an outer conducting layer and a matching resistor, wherein the current builds up an electromagnetic (EM) wave while flowing through the at least one breach region, and the EM wave is transmitted along the outer conducting layer of the coaxial cable until to the matching resistor. Moreover, an electromagnetic field can be built up while the current flows through the at least one breach region, and a RFID electronic tag attached to an object can be automatically triggered by the electromagnetic field.