[논문]A Construction Supply Chain Management Process with RFID/WSN-based Logistics Equipment

Shin, Tae-Hong; Yoon, Su-Won; Chin, Sangyoon

doi:10.6106/jcepm.2012.2.4.011

A Construction Supply Chain Management Process with RFID/WSN-based Logistics Equipment 원문보기

Journal of construction engineering and project management, v.2 no.4, 2012년, pp.11 - 19

Shin, Tae-Hong (Samsung SDS) , Yoon, Su-Won (R&D Center, POSCO E&C) , Chin, Sangyoon (Department of Civil, Architectural, and Environmental System Engineering, Sungkyunkwan University)

Abstract ▼ AI-Helper

Construction supply chain management (CSCM) has become one of the critical factors that determine the success of a construction project as it becomes increasingly complicated and mega-sized. Particularly for high-rise or mega-sized building construction, just-in-time supply chain management is required due to lack of storage space and effective logistics for construction components and materials at a construction site. Despite the fact that research and development of radio frequency identification (RFID) and wireless sensor network (WSN) technology have been performed, construction project managers still need to carry mobile devices and check material and component flow at each stage of the supply chain process. This research proposes that the equipment used in the construction supply chain process, such as movers, trailers, gates, and hoists, can become main actors in the supply chain process using RFID and WSN technologies. And the proposed equipment and process focused on a solution to the redundancy identification problem, which has been observed in operations that use RFID/WSN-based processes for construction logistics. This paper also presents issues identified through verification and validation of the research results and proposes further studies.

주제어

AI 본문요약
AI-Helper

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문제 정의

Since 2006, the authors have conducted a research project called Next Generation Intelligent Construction Supply Chain Management (NICS), the aim of which is to develop a process and system that support proactive construction supply chain management in real time by utilizing WSN and RFID technologies. Such a system could then be used to solve problems associated with technology evolution, errors made in the collection of information, differences in the levels of information shown by project-participating parties, and additional work that may become necessary to complete the gathering of information (Figure II).
As such, an extended range should be allowed, which may cause structural redundancy identification. The focus of this study was how to address redundancy identification as opposed to identification performance and range.
2011). The proposed framework was adopted during the testing of this research to support information management in heterogeneous CSCM environments.
Therefore, the objective of this research is to build an effective construction supply chain process framework by transforming the equipment mentioned above into active actors that can recognize materials and components and can communicate and share the collected information with others, including logistics servers. Field tests were performed to verify and validate the framework proposed by this research.
This paper discusses the redundancy identification problem that may arise during the building of an automated system for CSCM using RFID/WSN technologies. The redundancy identification problem discussed in this paper (Figure IX) focuses on the following: 1) the case in which intelligent equipment recognizes an RFID tag that is not loaded on the equipment but is located within the RFID reader’s recognition area, and 2) the case in which the RFID tag is simultaneously read by more than one piece of intelligent equipment.
This research focuses on the CSCM process that spans from the material order to the production, delivery, and erection at a construction site and the monitoring and controlling of the flow of material/components. This research considers the equipment involved in the logistics main actors in CSCM. Although there are various kinds of CSCM-related equipment, four kinds of equipment were selected and transformed as main actors using RFID/WSN technologies: 1) a mover; 2) a trailer that horizontally transports material and components; 3) a gate that can monitor the passage of material/components; and 4) a hoist that can vertically move materials and components.
This research focuses on the CSCM process that spans from the material order to the production, delivery, and erection at a construction site and the monitoring and controlling of the flow of material/components. This research considers the equipment involved in the logistics main actors in CSCM.
This research proposes that RFID/WSN-based logistics equipment can become main process actors. As shown in Table I, seven main actors, such as humans, materials, RFID tags, RFID/WSN-based equipment, management devices, and ERP/MRP, are involved in the RFID/WSNbased CSCM process.

제안 방법

(4) The RFID/WSN-based CSCM process along with toolkits and equipment were verified and validated using field tests to show the process feasibility.
A test was performed at a construction site in Hwaseong, Korea, to verify and validate the RFID/WSNbased CSCM process developed in this research. The details of the test process are described in Shin et al.
An RFID/WSN-based CSCM process was proposed with various actors such as IM, IT, GateSensor, and IH, and the process was verified and validated in a pilot test. The test result showed the benefits and savings in process time as well as effective and efficient information management of CSCM.
Therefore, the objective of this research is to build an effective construction supply chain process framework by transforming the equipment mentioned above into active actors that can recognize materials and components and can communicate and share the collected information with others, including logistics servers. Field tests were performed to verify and validate the framework proposed by this research. Further research and issues identified during the field tests are described and discussed below.
In this study, it was assumed that the RFID antennas of the IM performed as indicated by their specifications and could identify all of the materials loaded onto the IM within the specified range. Moreover, as shown in Figure VIII, if the identification range of the WSN-based equipment was limited to the equipment size, then the loaded material sets may not have all been identified depending on the material set configuration.
The test result was analyzed to validate the benefits of the proposed process by comparing time and manpower consumption of the proposed process with conventional ‘as-is’ process.
This research proposes that the equipment involved in the supply chain process, such as movers, trailers, gates, and hoists, can become main actors that collect and share information with other actors(e.g. human, material etc.) in the process using RFID and WSN technologies (Figure I).
Material flow is recognized by RFID and ZigBee nodes, and the flow information is communicated in real time through WSN. This research recognized that a redundancy identification problem can occur due to the current limitations of RFID/USN technology, the proposed process removes the reading procedures required at each step of the construction supply chain process and manual collection of the material flow.

이론/모형

With regard to the construction industry, this research adopted ZigBee technology as the wireless data communication protocol for inter-equipment communication. ZigBee technology is structurally simple, and the cost of its implementation is less than that of its competitors.

성능/효과

(2) RFID/WSN-based CSCM processes are developed with the assumption that logistics equipment can become main actors in a RFID/WSN-based CSCM process.
An RFID/WSN-based CSCM process was proposed with various actors such as IM, IT, GateSensor, and IH, and the process was verified and validated in a pilot test. The test result showed the benefits and savings in process time as well as effective and efficient information management of CSCM.

후속연구

When the problem is recognized by the server, it notifies an IM manager and provides a list of materials then the manager can correct by mapping the correct material information to the correct IM. Although this research developed the recognition algorithm for redundancy identification, further research is needed regarding the automatic resolution method that does not require human intervention.
The authors believe that this research envisions the future of the CSCM process using state-of-the-art technologies such as RFID and WSN. Further research issues (described chapter V: reading performance, heterogeneous environments, and redundant identification) were identified as well, and this information will hopefully invoke future relevant research.
The authors believe that this research envisions the future of the CSCM process using state-of-the-art technologies such as RFID and WSN. Further research issues (described chapter V: reading performance, heterogeneous environments, and redundant identification) were identified as well, and this information will hopefully invoke future relevant research.
However, these papers do not show or propose the full process of CSCM in which RFID/WSN-based equipment is utilized, nor do they show what kind of roles RFID/WSN-based equipment can have in the CSCM process. Therefore, this paper aims to shed new light on RFID/WSN-based equipment and service-based logistics information management environments from the aspect of the full CSCM process and proposes that use of the RFID/WSN-based equipment can improve the CSCM process by having them participate in the process.
This research proposes that equipment related to the supply chain process, such as movers, trailers, hoists, and gates, can become main actors in the process via integration with RFID and WSN technologies to create more effective and efficient construction supply chain processes. Material flow is recognized by RFID and ZigBee nodes, and the flow information is communicated in real time through WSN.

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