Wireless Tag Initialization Device Power Threshold Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless tag initialization devices struggle to specify and initialize tags that output response waves with a predetermined intensity regardless of the received power intensity, as they cannot be distinguished from other tags.
Innovation Solution
A wireless tag initialization device that adjusts power supply to a first threshold value to activate only the intended tag, inverts a flag to transition it to a response state, and then increases power to a second threshold for writing initial values, ensuring only the specified tag is initialized.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the intensity of response waves from wireless tags is measured to specify a tag to be initialized, then tags can be identified, but tags that output response waves with a predetermined intensity regardless of received power intensity cannot be distinguished from other tags
Solution Approach 1:
The patent changes the parameter used for tag identification from response wave intensity to a unique identification code transmitted by the tag. This allows reliable distinction between tags even when response wave intensities are predetermined and cannot be used for differentiation. The reader measures the intensity to determine which tag to address, then uses the tag's unique ID for precise identification and initialization.
2Productivity
If a wireless tag initialization device continuously initializes multiple wireless tags using one reader and writer, then initialization efficiency is improved, but the problem of how to specify a particular wireless tag to be initialized arises
Solution Approach 1:
The patent implements a feedback mechanism where the reader measures response wave intensities from multiple tags, uses this feedback to determine which tag to address by adjusting excitation power levels, and continuously initializes tags in sequence. This feedback loop enables efficient continuous initialization while maintaining precise control over which specific tag is being initialized at any given time.
Solution Approach 2:
The system dynamically adjusts the excitation power level to different tags based on their response characteristics. By changing the power level dynamically, the reader can selectively activate and initialize specific tags from a group of supported tags, enabling continuous high-throughput initialization while maintaining the ability to specify individual tags.
3Ease of operation
If power supply is adjusted to a first threshold value to activate only the intended tag, then specific tag activation is achieved, but power must be increased to a second threshold for writing initial values
Solution Approach 1:
The patent applies preliminary action by first activating the target tag at a low power threshold to perform identification and flag inversion, then subsequently increasing power to the writing threshold only when needed for the actual initialization data transfer. This two-stage power approach enables precise tag selection without requiring high power continuously, reducing overall power consumption while maintaining operational precision.
Data Source
AI summary
A wireless tag initialization device includes a reader and writer that weakens supply power to a first threshold value at which a wireless tag to be initialized is activated and other wireless tags are not activated, transmit a first command to invert a flag of the wireless tag to be initialized, increases the supply power to a second threshold value which is sufficient to write an initial value, and writes the initial value in the wireless tag with the inverted SL flag.