RFID Tag Reader Minimum Power Detection Without Host Iteration
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Solution Overview
Problem
Existing tag reading systems require a series of commands from the host device to determine the minimum output value for reading an RFID tag, which is time-consuming and inefficient.
Innovation Solution
A tag reader with a communication controller, communication interface, and processor that autonomously determines the minimum output level for reading an RFID tag and transmits this value to the host device, allowing for repeated reading attempts with incremental changes to the output level.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the host device supplies commands to change the output value gradually, then the minimum output value can be determined through reading results, but the process requires significant time
Solution Approach 1:
The tag reader performs preliminary actions by autonomously executing a series of reading attempts at different output levels and storing the results in memory. This preliminary determination of the minimum output value eliminates the need for time-consuming interactive command sequences with the host device, as the tag reader has already performed the necessary measurements and stored the optimal value for future use.
2Productivity
If the tag reader autonomously determines the minimum output level, then the time required is reduced, but the tag reader must perform multiple reading attempts with incremental changes
Solution Approach 1:
The tag reader serves itself by autonomously controlling its own output level through the communication controller and performing repeated reading attempts without requiring continuous intervention from the host device. The processor independently analyzes reading results, determines the minimum output value, and stores it in memory, enabling the tag reader to self-optimize its performance while maintaining high productivity.
3Ease of operation
If the host device controls the output value changes, then the system follows a standardized command protocol, but the processing load on the host device increases
Solution Approach 1:
The invention extracts the complex processing function of determining the minimum output value from the host device and relocates it to the tag reader. The host device retains its simple role of issuing basic reading commands and receiving results, while the tag reader independently handles the iterative reading attempts, output level adjustments, and minimum value determination, thereby reducing the processing load on the host device while maintaining protocol compatibility.
Data Source
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AI summary
A tag reader includes a communication controller, a communication interface, and a processor. The communication controller controls an output level of an output signal to be output from an antenna for reading an RFID tag. The communication interface communicates with a host device. The processor specifies a minimum output level of the output signal at which the RFID tag can be read and transmits the minimum output level to the host device through the communication interface.