Passive Radio-Frequency Identification Tag-Based Indoor Localization in Multi-Stacking Racks for Warehousing

Jaehun Park,Byung Kwon Lee,Yong-Jeong Kim

doi:10.3390/app10103623

Jaehun Park, Byung Kwon Lee + Show 1 more

Open Access

https://doi.org/10.3390/app10103623

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Journal: Applied sciences	Publication Date: May 23, 2020
Citations: 15	License type: CC BY 4.0

Affiliation: Daegu Haany University, Sogang University

Abstract

Radio-frequency identification (RFID) technology-based real-time indoor location awareness has been widely studied. In this paper, a passive RFID-based indoor inventory localization method for small and medium-sized enterprises (SMEs) is proposed to effectively manage their indoor inventory tracking in terms of the multi-stacking racking (MSR). To achieve this, we introduce a concept of reference tags and a calculation of measurement for the distance between the RFID reader and reference tag to improve the accuracy of the item location recognition. To illustrate the efficacy and applicability of the method, an empirical case study that applies it to an electronic device manufacturing company is conducted. It was noted that there was no significant difference in the location awareness rate of the proposed system compared with the existing active RFID-based methods. Also, it is demonstrated that the construction can be relatively inexpensive in terms of identifying the location of the items loaded in MSR and relatively narrow areas using a passive tag. This advantage makes it suitable for SMEs that have issues with large-scale facility investment, applying the method to compare the location difference between the registered location information in the inventory system and the actual location of the item in the rack.

Highlights

A location-based service identifies the location of persons or objects through location awareness technology and provides the necessary information [1]
We propose a passive radio-frequency identification (RFID)-based inventory location identification method that involves the introduction of a concept of reference tags, which are used as a reference point in relation to the stock loaded in multi-stacking racking (MSR)
We extended the size of the MSR to four rows and five columns of 360 cm in width and 288 cm in length

Summary

Introduction

A location-based service identifies the location of persons or objects through location awareness technology and provides the necessary information [1]. The Global Positioning System (GPS) is widely used for identifying the location of objects but has a disadvantage in that the location of objects in indoor areas cannot be grasped because the signals cannot reach there from the satellite. The RFID reader connected with an antenna generates radio-waves toward the tags periodically or continuously to scan them and interprets radio-wave signals as meaningful information. This periodicity for generating radio-waves is typically referred to as the recognition interval and is interpreted as how often the RFID reader generates radio-waves to scan the tags for a specific time (times/sec.)

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