Wireless Tag Reader Parameter Selection via Response Intensity

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Solution Overview

Problem

Existing wireless tag processing devices face inefficiencies in determining the optimal radio wave intensity for data acquisition from wireless tags, leading to prolonged processing times when multiple intensities are available.

Innovation Solution

A wireless tag processing device that employs two sets of parameter values to transmit radio waves and determines the appropriate intensity based on response wave conditions, limiting the search range by selecting from pre-defined lists of output values, thereby efficiently acquiring data from wireless tags.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multiple preset intensities are tried to select the appropriate radio wave intensity for data acquisition, then the reliability of data acquisition is improved, but the processing time increases significantly

Engineering Contradiction:

Improvedata acquisition reliabilityVSAvoidprocessing time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent segments the parameter selection process into two distinct phases: a learning phase where multiple intensities are tested to build a response characteristic table, and a subsequent acquisition phase where the pre-built table enables rapid parameter selection. This segmentation moves the time-consuming trials from every data acquisition operation to an initial setup phase, resolving the contradiction between reliability and processing time.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent performs preliminary action by pre-acquiring response characteristics for multiple parameter values and storing them in a table before actual data acquisition operations. This advance preparation eliminates the need to repeat intensive testing during normal operations, maintaining high reliability while dramatically reducing processing time for subsequent acquisitions.

Inventive Principle:

Principle #10Preliminary action

2Measurement precision

If a comprehensive search of all possible parameter values is performed to ensure optimal data acquisition, then the measurement precision is improved, but the device complexity increases

Engineering Contradiction:

Improveparameter selection precisionVSAvoidsearch process complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent replaces the mechanical trial-and-error approach with an information-based system. Instead of physically testing each parameter value during data acquisition, the system substitutes a pre-built response characteristic table that stores optimal parameters, converting a complex iterative search process into a simple table lookup operation.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 allows for rapid determination of the optimal data acquisition output value, reducing processing time and enhancing the efficiency of data retrieval from wireless tags by focusing on specific intensity ranges that meet predetermined conditions.

Implementation Method 1

the wireless tag processing devices determine an intensity of a radio wave to be transmitted to the wireless tag in order to acquire data from the wireless tag

Methodology Applied

Scientific EffectRadio wave transmission and detection: Electromagnetic Induction

Data Source

PatentUS11574161B2Wireless tag processing device configured to select from lists a parameter value to be used to communicate with a wireless tag

Publication Date: 2023.02.07 TOSHIBA TEC KK

AI summary

A wireless tag processing device includes a wireless tag reader-writer and a processor configured to acquire first and second sets of parameter values, control the reader-writer to transmit a radio wave using each parameter value of the first set and acquire a first intensity of a response wave from a wireless tag, when a highest first intensity satisfies a first condition, determine a parameter value of the first set corresponding to the highest intensity as a parameter value to be used by the reader-writer, and when the highest intensity does not satisfy the condition, control the reader-writer to transmit a radio wave using each parameter value of the second set and acquire a second intensity, and when a highest second intensity satisfies a second condition, determine a parameter value of the second set corresponding to the highest second intensity as the parameter value to be used by the reader-writer.