RF Transponder Engagement Verification via Coupled Inductive Loop
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Solution Overview
Problem
Existing methods lack an efficient and automated way to verify proper alignment, engagement, or latching between multiple parts in various applications, making manual verification cumbersome and prone to errors, especially in scenarios where numerous structures need to be checked.
Innovation Solution
A transponder arrangement comprising a transponder IC, an inductive loop, and a dipole antenna that generates RF data signals indicating different levels of engagement based on electrical coupling between wires, allowing an RFID reader to determine if structures are fully engaged, partially engaged, or disengaged.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual verification methods are used to check engagement between parts, then simplicity and low cost are maintained, but verification efficiency and accuracy deteriorate due to human error and time consumption
Solution Approach 1:
The patent replaces manual mechanical verification with an automated RF-based detection system. The transponder IC, inductive loop, and dipole antenna create an automated engagement verification system that eliminates manual inspection, thereby improving productivity and reducing verification time.
Solution Approach 2:
The engagement verification system is self-activating through the interaction between the inductive loop and dipole antenna. When parts engage, the electrical coupling automatically triggers the transponder IC to generate RF signals, eliminating the need for external manual operation and enabling autonomous verification.
2Measurement precision
If automated RF-based engagement verification is implemented, then verification accuracy and efficiency are improved, but device complexity increases due to multiple components including transponder IC, inductive loop, and dipole antenna
Solution Approach 1:
The verification system is divided into functionally independent segments: the transponder IC for signal generation, the inductive loop for magnetic coupling, and the dipole antenna for RF resonance. This segmentation allows each component to be optimized independently while maintaining overall system precision.
Solution Approach 2:
The transponder IC serves multiple functions: it detects the engagement state through the inductive loop, generates RF signals, and encodes engagement level information. This multi-functionality reduces the need for separate dedicated components, thereby managing device complexity while maintaining measurement precision.
3Loss of information
If multi-level engagement verification is implemented to distinguish partial and full engagement, then information completeness is improved, but signal encoding complexity and device complexity increase
Solution Approach 1:
The system provides feedback about engagement levels through distinct RF signal encodings. The transponder IC detects the degree of electrical coupling between wires and encodes this information into the RF signal, allowing the receiving system to determine whether engagement is partial or complete based on the signal characteristics.
Solution Approach 2:
The system uses changes in electrical coupling parameters between wires to indicate different engagement levels. As wires move from disengaged to partially engaged to fully engaged positions, the electrical coupling parameter changes, and these parameter changes are encoded into the RF signal to convey engagement level information.
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 automated and accurate verification of engagement states between multiple structures, reducing manual errors and improving efficiency in applications like manufacturing and assembly lines by signaling distinct levels of engagement through RF data signals.
Implementation Method 1
Engagement of the inductive loop with the induction portion of the dipole antenna induces current flow in the inductive loop in response to the dipole antenna resonating
Implementation Method 2
a first wire and a second wire having respective ends coupled to pins of the transponder IC and having portions configured for different levels of electrical coupling therebetween
Data Source
AI summary
A disclosed transponder arrangement includes a transponder integrated circuit (IC), an inductive loop, and a dipole antenna. First and second wires are coupled to the transponder IC and have portions configured for different levels of electrical coupling between one another. Engagement of the inductive loop with an induction portion of the dipole antenna induces current flow in the inductive loop in response to the dipole antenna resonating from a radio frequency (RF) signal, and disengagement makes the transponder IC non-responsive to the RF signal. Depending on a level of electrical coupling between the first and second wires, the transponder IC generates an RF signal that encodes either a first value indicating partial engagement or a second value indicating full engagement in response to the current flow in the inductive loop.