RFID Receiving Device With Segmented Antennas

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Solution Overview

Problem

Conventional RFID receiving devices with closely arranged objects struggle to accurately read RFID tags due to overlapping reading spaces, resulting in reduced identification rates.

Innovation Solution

The design includes a receiving device with multiple spacing shelves and reading antenna modules positioned on the inner walls of the device housing, allowing for overlapping reading spaces and optimized placement of radiators, dielectric materials, and a glass door to enhance RFID identification rates.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If objects are closely arranged on spacing shelves to increase storage capacity, then the quantity of objects that can be received increases, but the reading antenna module cannot accurately read the RFID of each object due to signal interference

Engineering Contradiction:

Improvequantity of objectsVSAvoidRFID reading accuracy

Core Design Contradiction:

Quantity of substanceVSMeasurement precision

Solution Approach 1:

The device housing is divided into multiple receiving spaces by spacing shelves, with each space containing objects at controlled intervals. The reading antenna modules are segmented and positioned at different locations (front wall, rear wall, side walls) to serve different receiving spaces independently, reducing signal interference between closely arranged objects

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Dielectric materials are introduced as intermediary elements between the reading antenna modules and the objects. These materials are positioned on the inner walls of the device housing to optimize signal propagation and reduce interference, enabling accurate RFID reading even when objects are closely arranged

Inventive Principle:

Principle #24Intermediary (Mediator)

2Area of stationary object

If reading antenna modules are positioned to cover all receiving spaces, then the coverage area increases, but the overlapping of reading spaces causes signal interference and reduces identification rate

Engineering Contradiction:

Improvereading space coverageVSAvoididentification rate

Core Design Contradiction:

Area of stationary objectVSReliability

Solution Approach 1:

Different reading antenna modules are positioned with distinct local characteristics - some on front walls, others on rear walls or side walls - each optimized for its specific receiving space. This local differentiation reduces overlapping coverage and signal interference while maintaining comprehensive identification capability

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

Reading antenna modules are distributed across multiple spatial dimensions (front, rear, and side walls) rather than concentrated in a single plane. This three-dimensional arrangement optimizes coverage of closely arranged objects while minimizing reading space overlap and interference

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Measurement precision

If dielectric materials are added to enhance signal clarity, then the RFID reading accuracy improves, but the device complexity increases

Engineering Contradiction:

ImproveRFID reading accuracyVSAvoiddevice structure complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

Thin dielectric film materials are applied to the inner walls of the device housing to enhance RFID signal reading. These thin-film dielectric layers improve signal clarity and reading accuracy without significantly increasing device complexity or occupying substantial space within the receiving device

Inventive Principle:

Principle #30Flexible shells and thin films

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 configuration significantly improves the identification rate of RFID tags, potentially reaching almost 100%, by minimizing overlapping effects and utilizing dielectric materials to enhance signal clarity.

Implementation Method 1

The reading antenna modules are respectively disposed in the receiving spaces, and are capable of reading the RFID tags of the objects

Methodology Applied

Scientific EffectElectromagnetic induction: Electromagnetic Induction

Implementation Method 2

utilizing dielectric materials to enhance signal clarity

Methodology Applied

Scientific EffectDielectric: Dielectric

Data Source

PatentUS11217876B2Receiving device

Publication Date: 2022.01.04 WISTRON NEWEB CORP

AI summary

A receiving device is provided. The receiving device is adapted to receive a plurality of objects, wherein each object includes an RFID. The receiving device includes a device housing, a plurality of spacing shelves and a plurality of reading antenna modules. The spacing shelves are disposed in the device housing, wherein the spacing shelves define a plurality of receiving spaces in the device housing, and at least some of the receiving spaces overlap each other. The reading antenna modules are respectively disposed in the receiving spaces, and are adapted to read the RFIDs of the objects. The device housing includes an inner wall and an opening. The inner wall includes a first wall, a second wall and a third wall. The first wall faces the third wall. The second wall faces the opening. The reading antenna modules are disposed on the inner wall.