RFID Reader Abnormality Detection via Time Interval Analysis
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Solution Overview
Problem
Conventional technologies for reading information from RFID tags increase processing load due to processes like antenna selection and power control, which are disadvantageous as they complicate error correction and detection.
Innovation Solution
An information processing apparatus that receives and determines abnormalities in the reading process by comparing the time interval or number of reads with predefined thresholds, simplifying the detection of reading errors without the need for antenna selection or error correction codes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If antenna selection and power control processes are used to read RFID tags, then reading reliability is improved, but processing load increases
Solution Approach 1:
The patent extracts and removes the complex antenna selection and power control processes from the RFID reading system. Instead of using these conventional methods, the invention uses a simplified approach where the reader antenna directly reads tags without requiring antenna switching or power adjustment, thereby eliminating the processing overhead while maintaining reading reliability
Solution Approach 2:
The patent segments the RFID system into distinct functional components: a reader with multiple antennas, tags with memory, and a determination unit. Each component performs a specific simplified function, avoiding the need for complex coordinated control processes that increase processing load
2Measurement precision
If error correction codes are used to detect and correct reading errors, then reading accuracy is improved, but device complexity increases
Solution Approach 1:
The patent removes error correction codes and parity bits from the system. Instead of encoding data with redundancy for error detection and correction, the invention relies on the determination unit to identify abnormal readings by comparing time intervals, thereby achieving reading accuracy without the complexity of error correction mechanisms
Solution Approach 2:
The patent replaces the conventional error correction mechanism (which uses mathematical coding and decoding processes) with a time-based detection mechanism. The determination unit substitutes complex error correction algorithms with simple time interval comparisons to identify and handle reading abnormalities
3Reliability
If conventional RFID reading processes are used, then reading capability is maintained, but processing time increases
Solution Approach 1:
The patent implements preliminary action by having the determination unit continuously monitor and compare time intervals between successive tag readings. This proactive time-based monitoring allows the system to immediately identify abnormal readings without waiting for complex error detection processes, thereby reducing processing time while maintaining reading capability
Solution Approach 2:
The patent enables the system to skip complex error correction and re-reading processes when abnormalities are detected through time interval comparison. Instead of time-consuming error correction cycles, the system rapidly identifies and handles abnormal readings by simply comparing time intervals, thereby reducing overall processing time
Data Source
AI summary
An information processing apparatus includes a receiving unit and a determining unit. The receiving unit receives read information that is read by a reading unit from a storage medium a plurality of number of times. The determining unit determines abnormality in a reading process performed by the reading unit, based on a first result acquired by comparing a time interval of reading the read information with a first threshold, or on a second result acquired by comparing the number of times the reading is performed with a second threshold.