RFID Transponder Corner Placement in Insulating Glazing Units
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Solution Overview
Problem
Conventional RFID-based identification systems for insulating glazing units are ineffective in metallic frame constructions due to interference with radio waves, limiting their readability and application range.
Innovation Solution
Placing an RFID transponder at a corner of the insulating glazing unit, with the transponder's end positioned close to the corner, allows reliable reading even in electrically conductive frames, enhancing readability up to 1 meter and improving signal strength by electromagnetic coupling with the conductive spacer profile.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an RFID transponder is attached to the insulating glazing unit for identification, then the identification capability is improved, but the readability is greatly attenuated or interrupted when installed in electrically conductive metallic frames
Solution Approach 1:
The patent applies local quality by specifically positioning the RFID transponder at the corner of the insulating glazing unit, where the electromagnetic field distribution is more favorable. This corner position creates a local zone with reduced interference from the metallic frame, allowing the transponder to maintain reliable communication despite the conductive environment. The corner location optimizes the electromagnetic coupling between the transponder antenna and the reading device while minimizing the harmful shielding effect of the metal frame.
2Length of stationary object
If the RFID transponder is placed at the corner of the insulating glazing unit, then the readability distance is extended to up to 1 meter, but the transponder requires precise positioning close to the corner
Solution Approach 1:
The patent applies preliminary action by pre-defining the optimal transponder position at the corner of the insulating glazing unit during the design and manufacturing phase. This predetermined positioning ensures that the transponder is always located in the electromagnetic field zone with maximum readability distance (up to 1 meter). By establishing this fixed corner position in advance, the system eliminates the need for complex real-time positioning adjustments during installation or operation.
3Ease of operation
If conventional identifying markings such as barcodes or QR codes are used, then the identification is visible and readable, but the markings are susceptible to copying and overwriting
Solution Approach 1:
The patent applies mechanics substitution by replacing the mechanical/optical identification system (barcodes, QR codes) with an electromagnetic field-based RFID transponder system. This substitution eliminates the vulnerabilities of visual markings to copying and overwriting, as the RFID transponder stores identification data in encrypted form that can be read remotely via electromagnetic fields. The transponder's data can be protected with passwords and cannot be easily overwritten or copied, providing superior security while maintaining identification functionality.
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 reliable and long-distance reading of RFID transponders in insulating glazing units installed in metallic frames, overcoming the limitations of conventional systems by maintaining readability and reducing power requirements, thus improving identification efficiency.
Implementation Method 1
which interrupts or at least greatly attenuates the passage of radio waves from or to the RFID transponder on the insulating glazing unit
Implementation Method 2
improving signal strength by electromagnetic coupling with the conductive spacer profile
Data Source
AI summary
An insulating glazing unit, includes at least two glass panes and a circumferential spacer profile between the at least two glass panes near edges of the at least two glass panes, for use in a window, a door, or a façade glazing, which has in each case an electrically conductive frame surrounding the edges of the insulating glazing, wherein at least one RFID transponder is attached to the insulating glazing unit as an identification element, and wherein the at least one RFID transponder is arranged at a corner of the insulating glazing unit, and wherein an end of the at least one RFID transponder pointing toward the nearest corner of the insulating glazing unit is not more than 30 cm from the nearest corner of the insulating glazing unit.