RFID Antenna Net with Waveguide Cable for Automatic Detection
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Solution Overview
Problem
Traditional security management systems require excessive manual labor and equipment to detect radio frequency identification (RFID) tags, especially in large warehouses, due to limited triggering range and high costs associated with manual scanning.
Innovation Solution
A radio frequency identification automatic detecting system with an enhancing surface wave-guide coaxial cable structure that generates an electromagnetic field, allowing RFID tags to be automatically triggered as objects move in and out of receiving spaces, reducing manual labor costs through broader electromagnetic field coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional manual scanning methods are used to detect RFID tags, then detection accuracy can be maintained, but labor cost and time consumption increase significantly
Solution Approach 1:
The system enables automatic detection where RFID tags trigger themselves when entering the electromagnetic field zone. Objects with RFID tags automatically transmit their information to the reader without requiring manual scanning operations, achieving self-service detection that eliminates manual labor while maintaining detection accuracy
Solution Approach 2:
The patent replaces the mechanical manual scanning system with an automatic electromagnetic field-based detection system. The surface wave-guide coaxial cable structure generates an electromagnetic field that automatically triggers RFID tags, substituting manual mechanical scanning with automated electromagnetic interaction
2Area of stationary object
If the electromagnetic field coverage is expanded to increase triggering range, then automatic detection capability improves, but system cost increases
Solution Approach 1:
The system divides the electromagnetic field generation into multiple segments along the surface wave-guide coaxial cable structure. Instead of using one large expensive antenna, the cable is segmented into multiple sections that collectively provide extended coverage, reducing overall system cost while maintaining large coverage area
Solution Approach 2:
The patent changes the physical parameters of the cable structure by creating aperture regions without outer conducting layers and using extension conductive wires to alter the electromagnetic field distribution. These parameter changes enable extended triggering range using cost-effective cable modifications rather than expensive traditional antenna arrays
3Reliability
If surface wave-guide coaxial cable structure with aperture regions is used, then electromagnetic field generation and transmission is improved, but manufacturing complexity increases
Solution Approach 1:
The system transitions from a static cable structure to a dynamic one where the outer conducting layer is selectively removed in aperture regions. This dynamic modification allows the cable to adapt its electromagnetic properties along its length, improving field generation efficiency while the modular nature of the modifications keeps manufacturing manageable
Solution Approach 2:
The surface wave-guide coaxial cable structure acts as an intermediary between the RFID reader and the RFID tags. The cable with its aperture regions serves as a mediator that generates and guides electromagnetic fields, providing reliable field generation while the standardized cable construction keeps manufacturing complexity moderate
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
Enables efficient automatic detection of RFID tags across a wider range, simplifying object management and reducing labor costs by automatically transmitting tag information to a signal processing device when objects with RFID tags are moved within the electromagnetic field.
Implementation Method 1
When the current generated by the radio identification transmitting/receiving device flows along the inner conducting layer of the coaxial cable through the aperture region, an electromagnetic (EM) wave leakage is resulted so as to form an electromagnetic field
Implementation Method 2
The EM wave is transmitted along the outer conducting layer and the extension wires, such that the electromagnetic field is built up in nearby regions adjacent to the receiving spaces
Data Source
AI summary
A radio frequency identification automatic detecting system with an antenna net includes a radio frequency identification module, an enhancing surface wave-guide coaxial cable structure including a coaxial cable having at least one aperture region without an outer conducting layer, a receiving apparatus having a plurality of receiving spaces and a plurality of extension wires disposed adjacent to the receiving spaces and coupled or connected to the outer conducting layer of the coaxial cable. The electromagnetic field is formed in nearby regions adjacent to the receiving spaces because the electromagnetic wave caused by the current generated from the radio frequency identification module is transmitted by the outer conducting layer and extension wires. The radio frequency identification electronic tag on the object is triggered automatically when the object is moved toward or moved out from the respective receiving space such that the automatic detecting effect is achieved.