RFID Label Production Aligning Antenna Directivity
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Solution Overview
Problem
RFID labels with directional sensitivity patterns are difficult to recognize after affixation, leading to reduced communication efficiency when the positional relation with the reader changes.
Innovation Solution
An apparatus that produces RFID labels with integrated sensors and antennas, allowing for the detection and alignment of directivity patterns during the manufacturing process, ensuring optimal communication efficiency by matching the label's sensitivity direction with the reader's position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If RFID labels are affixed to target articles with directivity pattern matching, then communication efficiency is improved, but the directivity pattern cannot be visually recognized after affixation leading to potential communication failures
Solution Approach 1:
The patent applies visual indicators (such as colored markings or patterns) on the RFID label to indicate the direction of higher antenna sensitivity. These visual indicators allow users to easily identify and align the directivity pattern during affixation, ensuring the label is oriented correctly relative to the reader while maintaining communication efficiency.
2Ease of manufacture
If RFID labels are produced without visual directivity indicators, then manufacturing complexity is reduced, but alignment accuracy with reader position deteriorates
Solution Approach 1:
The patent incorporates visual indicators such as colored arrows, patterns, or markings on the RFID label that clearly indicate the direction of higher antenna sensitivity. These indicators are integrated into the label design and printing process, adding minimal manufacturing complexity while significantly improving alignment accuracy during affixation to the target article.
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
Ensures accurate recognition of directivity patterns and maintains communication efficiency by aligning the RFID label's sensitivity direction with the reader's position, preventing communication failures due to positional changes.
Implementation Method 1
A RFID (Radio Frequency Identification) system configured to transmit and receive information contactlessly (electromagnetic coupling method using a coil, an electromagnetic induction method, an electric wave method or the like) with a RFID circuit element storing information is known.
Implementation Method 2
This RFID circuit element is formed as a RFID label on a label-like material, and this RFID label is often affixed to a target article and the like for classification/organization of various documents and articles
Data Source
AI summary
An apparatus for producing RFID labels includes a feeding-roller driving shaft configured to feed a base tape on which a RFID circuit element provided with a tag antenna having directivity with sensitivity to one side higher than that to the other side is arranged, a sensor configured to acquire information relating to directivity of the tag antenna, a lower apparatus antenna for radio communication with the RFID circuit element, and a print head configured to make a print on a cover film to be bonded to the base tape and controls the print head according to the directivity information acquired using the sensor.