Wireless IC Tag Counter for Communication Failure Diagnosis
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Solution Overview
Problem
Existing wireless IC tags and information management systems fail to accurately identify the cause of communication failures between the tag and the reader/writer, and they are unable to estimate the remaining life of the tag effectively, especially during data transmission and environmental sensing, which affects the reliability and efficiency of operations.
Innovation Solution
Incorporating a counter mechanism within the wireless IC tag that increments or decrements a count value based on specific actions such as signal transmission, data reading/writing, and environmental sensing, allowing the system to track and analyze these events to diagnose communication issues and estimate the tag's life, using a combination of antennas, controllers, and memory for data storage and processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a counter mechanism is added to the wireless IC tag to track communication events and estimate remaining life, then the reliability and diagnostic capability are improved, but the device complexity increases
Solution Approach 1:
The counter function is merged into the existing memory structure of the wireless IC tag. The counter uses the same memory cells and control logic resources already present in the tag, combining multiple functions (data storage, communication event counting, and life estimation) into a single integrated system rather than adding separate dedicated hardware components.
Solution Approach 2:
The memory structure in the wireless IC tag is designed to serve multiple purposes: storing communication data, counting read/write operations, tracking signal transmission events, and estimating remaining tag life. This multi-functional approach allows the same hardware resources to support both traditional RFID operations and the new diagnostic capabilities without increasing physical complexity.
2Measurement precision
If the counter tracks multiple events including signal transmission, data read/write operations, and environmental sensing, then the measurement precision and diagnostic capability are improved, but the loss of energy increases
Solution Approach 1:
The counter mechanism selectively tracks only the most critical communication events (signal transmission, data read/write operations) rather than every possible tag operation. This partial tracking approach provides sufficient diagnostic information to identify communication failures and estimate remaining life without requiring the tag to monitor and count every single event, thereby reducing unnecessary power consumption while maintaining adequate measurement precision.
3Ease of manufacture
If the counter is implemented within the tag memory structure, then the ease of manufacture is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The memory structure is segmented into distinct functional regions: one area dedicated to storing communication data, another area for counter variables tracking different event types (signal transmissions, read operations, write operations), and a third area for life estimation calculations. This segmentation allows each region to be optimized independently during manufacturing while maintaining overall system simplicity and reducing the complexity of precise memory cell allocation.
Data Source
AI summary
The wireless IC tag has a counter for counting on the basis of a signal received via the antenna or for counting in cases where a signal transmits via the antenna. The wireless IC tag may have a counter for each required data field and incrementing/decrementing a count value when data is read from the data field. The wireless IC tag may have a counter for each byte field in a memory and incrementing/decrementing a count value when data is read from the byte field.