• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2011.10a
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• pp.738-741
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• 2011

창고관리 시스템은 RFID(Radio Frequency Identification) 기술을 이용하여 입 출고 관리에 대한 데이터를 자동으로 기록할 수 있을 뿐만 아니라 상품의 적재 위치를 정확히 보여주고, 적재된 상품의 현재 상태, 배치된 상품의 수량, 재고 상황 등의 정보를 실시간으로 확인 할 수 있게 해준다. 특히 냉동창고의 경우, 물품이 외부환경 요소에 민감하기 때문에 물품보관을 요청한 화주의 입장에서는 물품의 상태를 실시간으로 모니터링 하기를 원한다. 본 논문에서는 RFID 냉동창고를 이용하는 화주에게 본인의 물품상태를 실시간 원격으로 모니터링할 수 있도록 해 주는 스마트폰 기반의 애플리케이션의 개발내용에 대해 기술한다. 본 애플리케이션을 통해 화주는 물품의 입고요청, 출고요청을 실시간으로 보낼 수 있을 뿐만 아니라, 적재되어 있는 물품의 현재위치, 적재위치 이동경로, coldroom의 온도 등의 상태정보도 확인 할 수 있다. 냉동창고 업체는 RFID 냉동창고 관리시스템과 더불어 화주가 편리하게 이용할 수 있는 본 애플리케이션을 갖춤으로써 화주에 대한 서비스 향상에 기여하게 된다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2010.05a
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• pp.425-429
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• 2010

최근 들어 단순 보관의 기능만을 가지고 있던 기존의 냉동창고가 보관뿐만 아니라, 규격화된 유통시스템을 갖추어 전체 물류 공급망 관리의 효율성과 경쟁력을 갖추고자 한다. 이를 위해 라디오 주파수를 이용하여 움직이는 물체를 인식, 추적, 분류할 수 있는 기술인 RFID (Radio Frequency Identification)를 적용할 수 있다. 그러나 RFID 기술을 도입하기 위해서는 여러 시나리오를 통해 최적의 실행 방안을 도출해 내야하며, 이를 바탕으로 자동화 프로세스를 지원해 줄 수 있는 RFID 애플리케이션을 개발할 수 있다. 본 논문에서는 RFID 기술을 적용하여 최적화된 비즈니스 프로세스를 지원하는 냉동창고 관리 시스템을 개발하고자 한다. 이를 위해 냉동창고 업무 프로세스를 분석하고 RFID 기술 도입에 따른 의사 결정이 필요한 설계요소들을 식별한다. 식별된 설계요소들은 RFID 배치 시뮬레이터를 이용하여 RFID 데이터가 비즈니스 프로세스에 통합되는 과정에 대하여 그 효율성을 판단할 수 있게 한다.

• Journal of the Korea Society of Computer and Information
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• v.19 no.6
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• pp.109-117
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• 2014

A cold storage is a warehouse of a insulated building with cooling installations. It has many different types of cold rooms with temperatures below 0 degrees Celsius, and the sequential workflow such as receiving, picking and packing runs in that rooms. Recently, the cold storages have adopted RFID technology, and consequently, warehouse product management in them are becoming intelligent and network. However, information inconsistency in warehouses caused by physical and logical errors reduces reliability in the RFID cold storage management system and worsens their work efficiency. Therefore, it is necessary to develop an early detection system to identify errors. In this paper, we suggest a supervisory system detecting logical errors on business processes of the RFID cold storage. It is composed of a master supervisor and mobile supervisor. In the master supervisor, the manager can set the constraints conditions and get alerts, and in the mobile supervisor, the workers confirm and deal with these faults directly. The supervisory system improve reliability of the RFID cold storage management system by recognizing a failure to identify physically and logically using these constraint conditions. This paper shows that the supervisory system can reduce the average recovery time to improve reliability by decreasing the time for detecting and analyzing errors in the RFID cold storage management system.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.15 no.9
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• pp.1971-1978
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• 2011

In RFID-based cold-storage systems, product locations are recognized as the logical locations of RFID readers which are attached to the entrance of the cold rooms. However, through these methods, product locations can be incorrect in many different situations of a storage. Cold storage rooms have a huge rage in temperature, and the product in the cold-storage spoils easily. Therefore, highly precise product locations is very important for the product quality In this paper, a new approach is suggested to manage the storage location inaccuracy by adding two readers to existing forklift and attaching RFID tags to the ceiling. One reader recognizes ceiling tags to acquire location data, and the other recognizes product tags to acquire product detail data loaded on the forklift. The product can be seamlessly tracked and traced in realtime by monitoring and analyzing data gathered from these readers. Through the proposed location management method, the effectiveness of the product management in cold-storage can be improved consequently.

• Proceedings of the Korean Society of Disaster Information Conference
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• 2023.11a
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• pp.345-346
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• 2023

본 연구에서는 냉장·냉동 창고의 화재 위험성을 최소화시키기 위해 적용 가능한 화재대응시설을 조사하고, 설치 시 발생할 수 있는 문제점을 파악하였다. 문제점을 해결하기 위해 국외에서 사용 중인 건식 스프링클러설비와 준비작동식 스프링클러설비의 작동 원리 및 특징을 분석하였다. 또한, 냉장·냉동 창고에서의 감지기 및 헤드의 오작동으로 인한 수손피해를 최소화할 수 있는 더블 인터록 시스템을 적용한 준비작동식 스프링클러설비의 적합성을 확인하였고, 이를 국내 냉장·냉동 창고에 적용하고자 한다.

• Journal of Digital Convergence
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• v.15 no.11
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• pp.121-131
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• 2017

The Fuzzy-analytic hierarchy process (AHP) was adopted as the methodology for this study because it allows for the use qualitative judgments by experts. Based on results of the analysis of the success factors for frozen storage/cold storage warehouses, the facility factor was identified as the most important to consider. This factor had a weight of 0.307, followed by systems and operations, accessibility, and standardization/automation with weights of 0.263, 0.255, and 0.175, respectively. The conclusions and implications of the study are as follows. First, the efficiency of constant temperature and humidity systems and the heat insulation property of buildings need to be enhanced. Second, the efficiency of the operations should be enhanced through the standardization of equipment rather than by standardizing product loading. Finally, since logistics and transportation costs are higher for frozen storage/cold storage warehouses than for general distribution, accessibility needs to be considered as the first priority.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.14 no.6
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• pp.1453-1459
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• 2010

Recently, the aim of cold storage warehouse is not only to provide preservation of the quality of perishable foods but also to use state-of-the-art information systems to rapidly move products across the cold chain. An RFID (Radio Frequency Identification) is an automatic identification method that detects signals from mobile objects, and tracks and traces movement of the objects. RFID can be used to turn a cold storage warehouses into a real-time system. In this paper, we develop an cold storage management system to support the optimized business processes with RFID system. First of all, business processes in the cold storage warehouse are analyzed. Then design factors which should be considered for incorporating RFID are defined. Design values which set to the design factors can be extracted from using RFID deployment simulator. as a result, the design values make RFID to be efficiently integrated to existing business processes.

• Journal of the Society of Disaster Information
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• v.19 no.1
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• pp.117-127
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• 2023

Purpose: The number of Cold Storages at home and abroad is on the rise, fires in large Cold Storages have recently occurred. As fires continue to occur and property damage is on the rise every year, the importance of preventing fires in large Cold Storage is growing. Method: Real Cold Storages were investigated on-site and fire cases were analyzed to derive and analyze fire risk, and the ORS, which is emerging as an adaptive fire prevention technology of Cold Storage, was investigated through FDS. Result: oxygen concentration 21, 15.7% and 17.7, 16.7% were analyzed through FDS, and flashover was reached within 3~4 minutes from 21, 17.7, 16.7%, but if oxygen concentration was lowered to 15.7%, it didn't ignite for 13 minutes. Conclusion: This study understood the concept and general part of the ORS, modeled the freezer through FDS, and analyzed the oxygen concentration to analyze the fire protection adaptability of the ORS. In the future, it is expected that large-scale empirical experiments and related regulations will be prepared to provide solutions for fire prevention in Cold Storages in blind spots of fire.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2011.10a
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• pp.105-108
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• 2011

RFID(Radio Frequency Identification)를 이용한 창고관리시스템은 작업환경을 개선시키고 작업처리 속도와 정확성을 증가시킨다. RFID 기술은 기존의 바코드를 대체하여 물품관리를 네트워크화하고 지능화함으로써 창고의 물품관리에 혁신을 선도하고 있다. 그러나 RFID는 포장의 물질적 특성, 태그부착 위치, 노이즈 발생원이 있는 주위작업 환경 등에 따라 인식률에 상당한 차이를 낼 수 있고, 이러한 문제 때문에 실제 비즈니스 영역에서의 적용이 다소 제한받고 있다. 그러므로 RFID를 이용한 창고관리시스템이 모든 업무에 가동되어 업무 효율성을 높이기 위해서는 업무 흐름 도중에 발생할 수 있는 다양한 예외상황을 찾아내고 이를 빠르게 해결할 수 있는 방안이 필요하다. 본 논문에서는 RFID를 이용하는 냉동창고에서 업무 자동화가 끊어짐없이(seamless) 이어질 수 있도록 다양한 유형의 RFID 오류원인을 식별해내고 이를 해결할 수 있는 방안에 대해 제시한다. 이를 위해 RFID가 동작하는 작업환경을 업무 별로 분류하고, 각 작업환경에서 진행되는 업무흐름을 분석하여 각 오류를 유형별로 체계화 시킨다. 분류된 오류들에 대해 이를 감지하고 해결할 수 있는 방안을 찾음으로써 냉동창고 내의 전체적인 업무흐름을 원활히 하여 업무처리 소요시간을 줄일 수 있게 한다.

• Journal of Food Hygiene and Safety
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• v.34 no.2
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• pp.199-204
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• 2019

This study aimed to generate a probability distribution model based on temperature data of frozen food storage facility as input variables for microbial risk assessment (MRA). We visited 8 food-handling businesses to collect temperature data from their cold storage warehouses. The overall mean temperature inside the storage facilities was $-20.48{\pm}3.08^{\circ}C$, with 20.4% of the facilities having above $-18^{\circ}C$, with minimum and maximum temperature values of -10.3 and $-25.80^{\circ}C$ respectively. Temperature distributions by space locations of natural and forced convection were $-22.57{\pm}0.84$ and $-17.81{\pm}1.47^{\circ}C$, $-22.49{\pm}1.05$ and $-17.94{\pm}1.44^{\circ}C$, and $-22.68{\pm}1.03$ and $-18.08{\pm}1.42^{\circ}C$ in the upper (2.4~4 m), middle (1.5~2.4 m), and lower (0.7~1.5 m) shelves, respectively. Probability distributions from the temperature data were obtained using the program @RISK. Statistical ranking was determined using goodness of fit to determine the probability distribution model. Our results show that a log-normal distribution [5.9731, 3.3483, shift (-26.4281)] is most appropriate for relative MRA conduction.