Antenna Group Overlap for RFID Label Detection

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Solution Overview

Problem

Existing RFID-based systems for detecting and reading labels on stored elements, particularly those containing biological substances or medicines, often fail to ensure reliable detection due to issues with label placement on certain zones of shelves, leading to incomplete traceability.

Innovation Solution

A wireless communication device with multiple antennas arranged in groups of four, each antenna's position deduced by translating another, forming specific overlap zones, ensuring reliable reading of labels on pouches containing biological substances or medicines by emitting electromagnetic waves across a continuous communication zone.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a single RFID reader is used to detect labels on stored elements, then the device complexity is low, but the reliability of reading all labels is insufficient

Engineering Contradiction:

Improvelabel detection reliabilityVSAvoidantenna system complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The RFID reader is segmented into multiple antennas (at least four), each responsible for specific zones within the storage compartment. This segmentation allows comprehensive coverage of all label positions while maintaining manageable complexity through modular antenna design and control

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent transitions from a single-point detection approach to a distributed spatial arrangement of multiple antennas in three-dimensional space. By positioning antennas at different locations and orientations, the system achieves complete coverage of all label zones within the storage compartment

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Reliability

If antennas are arranged with extensive overlap to ensure complete label reading coverage, then the reliability of label detection improves, but the device complexity and space requirements increase

Engineering Contradiction:

Improvelabel reading coverageVSAvoidantenna arrangement space

Core Design Contradiction:

ReliabilityVSArea of stationary object

Solution Approach 1:

Each antenna is assigned to cover specific local zones within the storage compartment, with overlap zones strategically positioned only where needed for complete label detection. This localized coverage approach ensures reliable reading without requiring excessive overall antenna arrangement space

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent implements partial overlap between adjacent antenna zones - enough overlap to ensure complete coverage of all possible label positions, but not excessive overlap that would waste space. The overlap is precisely calibrated to cover the transition zones between antenna effective areas

Inventive Principle:

Principle #16Partial or excessive action

3Reliability

If multiple antennas are arranged to cover all zones, then complete label detection is achieved, but the energy consumption increases

Engineering Contradiction:

Improvetraceability completenessVSAvoidantenna power consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The control unit activates antennas periodically or selectively based on detection needs, rather than maintaining all antennas continuously active. This periodic activation reduces overall energy consumption while ensuring complete traceability coverage when required

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The system intelligently determines which antennas need to be active based on the presence and position of stored elements, activating only the necessary antennas for current detection tasks. This self-regulating approach minimizes energy consumption while maintaining complete traceability capability

Inventive Principle:

Principle #25Self-service

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

The solution provides reliable detection and reading of all labels, ensuring proper traceability and flexibility in positioning, even for sensitive items like blood and medicine pouches, by using a configuration of antennas that maximizes overlap areas for effective communication.

Implementation Method 1

by emitting electromagnetic waves across a continuous communication zone

Methodology Applied

Scientific EffectElectromagnetic radiation: Electromagnetic Induction

Data Source

PatentUS20240213676A1Wireless communication device comprising a plurality of antennas, associated facility and communication method

Publication Date: 2024.06.27 BIOLOG ID

AI summary

The invention relates to a wireless communication device (30) comprising a plurality of antennas (42), each antenna (42) having a single loop (44), the antennas (42) of the plurality of antennas being arranged in groups (46) of four antennas (42), the position of each antenna (42) of the same group being deduced by translation from the position of another antenna (42) of the same group (46), each group (46) of four antennas (42) including only five zones of overlap of antennas of the same group (46): a common zone of overlap (ZC) of the four antennas (42) and four zones of overlap (Z1, Z2, Z3, Z4) of two antennas (42).