RFID Reader Signal Analysis Using Internal ADC Storage
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Solution Overview
Problem
Current methods for analyzing errors in data exchange between reading devices and mobile data storage devices, such as UHF RFID transponders, are time-consuming, costly, and prone to measurement interference, as they require external Real Time Spectrum Analyzers, which can falsify results and fail to analyze errors accurately.
Innovation Solution
Equipping the reading device with internal receiving electronics, an analog-to-digital converter, and a storage device to continuously store and analyze low-frequency signals, allowing for real-time error analysis without external equipment, using a ring memory for efficient signal storage and a microprocessor for evaluation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If external Real Time Spectrum Analyzers are used for error analysis, then measurement capability is provided, but measurement interference occurs and analysis quality deteriorates
Solution Approach 1:
The patent combines the error analysis functionality directly into the reading device by integrating an analog-to-digital converter and a storage device into the existing reader system. This merging eliminates the need for separate external measurement equipment, thereby preventing measurement interference while maintaining error analysis capability. The reader's own components are used to capture and analyze the electromagnetic signals, ensuring that the measurement process does not disturb the system being measured.
Solution Approach 2:
The reading device performs self-diagnosis and self-analysis by using its own receiving electronics, analog-to-digital converter, and storage device to capture and evaluate electromagnetic signals. The system serves itself by internally recording and analyzing errors without requiring external intervention, thus avoiding the measurement interference that would be introduced by external equipment while maintaining full error analysis functionality.
2Reliability
If external measuring receivers are deployed for fault analysis, then error detection capability is achieved, but time consumption and cost increase
Solution Approach 1:
The patent merges the error detection and analysis functionality into the existing reading device by integrating an analog-to-digital converter and storage device. This eliminates the need to procure, install, and configure separate external measuring receivers, thereby significantly reducing time consumption and costs while maintaining full error detection capability. The reader itself becomes the measurement instrument.
Solution Approach 2:
The reading device is designed with multi-functionality, serving both as a data reading device and as an error analysis instrument. By integrating the analog-to-digital converter and storage device, the system can simultaneously perform its primary function of reading data from transponders and its secondary function of capturing and analyzing electromagnetic signals for error detection, eliminating the need for dedicated external measurement equipment.
3Loss of information
If external measuring receivers are used, then signal recording is possible, but device complexity increases
Solution Approach 1:
The patent combines the signal recording functionality with the existing reading device by integrating an analog-to-digital converter and storage device into the reader system. This merging eliminates the need for separate external measuring receivers and their associated antennas, thereby reducing system configuration complexity while maintaining full signal recording capability. The reader's own components are used to capture and store electromagnetic signals.
4Measurement precision
If external measuring receivers are deployed, then error analysis is enabled, but cost increases
Solution Approach 1:
The patent merges the error analysis functionality into the existing reading device by integrating an analog-to-digital converter and storage device. This eliminates the need to procure and install expensive external Real Time Spectrum Analyzers and associated equipment, thereby significantly reducing implementation costs while maintaining full error analysis capability. The reader itself becomes the measurement instrument.
Solution Approach 2:
The reading device performs self-analysis using its own integrated components, eliminating the need for expensive external measurement equipment. By using its own analog-to-digital converter and storage device to capture and analyze electromagnetic signals, the system achieves cost-effective error analysis without requiring additional expensive instruments.
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
This approach reduces time and cost by enabling precise analysis of processed signals, improving analysis quality, and allowing for continuous error analysis without external interference, with the ability to store and analyze signals for later evaluation.
Implementation Method 1
receiving electronics for converting a high-frequency signal received via an antenna into a low-frequency signal
Data Source
AI summary
The invention relates to a reader (LG) for data exchange with a mobile data storage device, in particular with a UHF RFID transponder, wherein the reader (LG) comprises receiver electronics for converting a high-frequency signal received via an antenna (ANT) into a low-frequency signal (I, Q) and a decoding device for converting the low-frequency signal into data. The reader (LG) includes an analog-to-digital converter (ADC) for digitization and a storage device (MEM) associated with the ADC for storing the low-frequency signal (I, Q) of at least a temporal segment of a communication event, and furthermore, the reader (LG) includes an analysis device for evaluating such a stored low-frequency signal (I, Q).A reader modified in this way can independently perform an analysis of the processed low-frequency signal in the event of any misreading (misrecognition) of a mobile data storage device, whereby the analog-to-digital converter already used in the readers can also be used to digitize the low-frequency signal stored for analysis purposes.