• Title, Summary, Keyword: picking time

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The Picking Lead Time for the Picking Batch Size in a Warehouse System (창고시스템에서 인출 배치크기에 대해 인출소요시간)

  • Chang, Suk Hwa
    • Journal of the Society of Korea Industrial and Systems Engineering
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    • v.36 no.2
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    • pp.17-24
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    • 2013
  • This paper is to analyze the picking lead time for picking batch size in a warehouse system and to get minimum picking batch size that is the warehouse system feasible. The warehouse system consists of aisles and racks, which two racks face each other through aisle. The products are picked from the storage locations by batch size. The probability that items are picked in the each row of the rack in the aisle for order picking activity is derived. The picking lead time for picking batch size is the time passed from the first picking location to arrival at starting location in aisle picking all items included in a batch size. The picking lead time for picking batch size in an aisle is analyzed. The picking lead time for picking batch size in the whole warehouse system is obtained. The warehouse system is feasible if all items that customers order are picked from the storage locations for same period. The picking batch size that is the warehouse system feasible is obtained. The problem is analyzed, a solution procedure is developed, and a numerical example is shown to explain the problem.

The order Picking Time of the S/R Vehicle in a Batch Picking Warehouse System (배치 인출 창고시스템에서 저장/인출 차량의 주문 인출 소요시간)

  • Chang, Suk-Hwa
    • Journal of the Society of Korea Industrial and Systems Engineering
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    • v.34 no.4
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    • pp.1-10
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    • 2011
  • This paper addresses the analysis of the travel distance and order picking time of the vehicle in a aisle when items are picked by the batch in a warehouse system. Batching is to combine several orders in a single tour of the storage/retrieval machine. An advantage of batching is that the length of a tour for a batch of orders is shorter than the sum of the individual orders' tour lengths. The average travel distance and order picking time when a batch is picked in a aisle of the warehouse systems are analyzed for the batch size. And when the vehicle is idle, the dwell point of the vehicle to minimize to the response distance is analyzed. As the batch size is increased, average order picking time per item is decreased. The problem is analyzed and a numerical example is showed to explain the problem.

Transporter Operation Planning for Refrigerated Warehouse Using Simulation Method (냉장물류센터 내 운반장비 운영계획에 관한 연구)

  • Hwang, Heung-Suk;Kim, Ho-Gyun;Cho, Gyu-Sung
    • IE interfaces
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    • v.15 no.4
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    • pp.382-390
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    • 2002
  • This paper deals with planning of order-picking warehouse considering the batch order picking for transportation equipments to pick consumers' orders at a time among order-picking methods and a systematic approach method in order to analyze the order-picking warehouse which can perform optimal operation. To estimate an operating time of transportation equipments to carry out order-picking, this paper suggests three operations : first, to design the refrigerated warehouse using warehouse design parameters, second, to calculate the travel time of transporters considering four types of times with the probabilistic picking frequency, and third, to analyze an order-picking warehouse to construct a simulation model with the AutoMod as a simulation tool. We apply this model to a refrigerated warehouse company in Busan.

Changes in Organic acid, Mineral, Color, Curcumin and Bitter Substance of Curcuma longa L. and Curcuma atomatica Salib According to Picking Time (울금 품종과 채취시기별 유기산, 무기질, 색도, Curcumin 및 쓴맛의 변화)

  • Kang, Seong-Koo
    • Korean Journal of Food Preservation
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    • v.14 no.6
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    • pp.633-638
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    • 2007
  • Changes in organic acid, mineral, color, curcumin and bitter taste of Curcuma longa L. (autumn woolgeom in Korean) and Curcuma atomatica Salib (spring woolgeom) were investigated according to picking time. Oxalic and lactic acid were gradually increased, and then malic acid and malonic acid were decreased by extending the picking time. Total organic acid was increased by extending the picking time and then decreased after January of the coming year. Minerals were increased by extending the picking time and decreased slightly after the coming year. Hunter color index, L, a and b, was increased by extending the picking time. Contents of curcumin in spring woolgeom was slowly increased by extending the picking time and autumn woolgeom was $1.8{\sim}2.5$ times higher than spring woolgeom. Intensity of bitter taste in two woolgeoms were not different by picking time and extracting solvents. Bitterness of spring woolgeom was strong as compared to autumn woolgeom.

The Impact of Picking Performance by the Zone Arrangement Method in Pick to Light Order Picking System (Pick to Light 오더피킹시스템의 존 배치 방법이 피킹 생산성에 미치는 영향)

  • You, Kang-Chul;Shin, Jae-Cheon;Shim, Ho-Seob;Choi, Jong-Su;Choi, Chun-Ho;Kim, Ha-Gon;Kim, Bu-Yeol;Kang, Kyung-Sik
    • Journal of the Korea Safety Management & Science
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    • v.12 no.3
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    • pp.207-214
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    • 2010
  • The picking process in distribution center is one of the most difficult and time-consuming process. The improvement of picking productivity is a core element which decides efficiency of the distribution center. The time to shipping on vehicles from receiving depends on the arrangement of items or picking methods. The Pick to Light system typically is used to improve the efficiency of order picking. In some cases the layout design of Pick to Light system has been performed rather than scientific analysis by a common experience. Therefore, this study analyzed the impact of picking performance by the zone arrangement method in order picking process of Pick to Light system.

A Study in Seismic Signal Analysis for the First Arrival Picking (초동발췌를 위한 탄성파 신호분석연구)

  • Lee, Doo-Sung
    • Geophysics and Geophysical Exploration
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    • v.10 no.2
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    • pp.131-137
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    • 2007
  • With consideration of the first arrival picking methodology and inherent errors in picking process, I propose, from the computerization point of view, a practical algorithm for picking and error computation. The proposed picking procedure consists of 2-step; 1) picking the first coherent peak or trough events, 2) derive a line which approximates the record in the interval prior to the pick, and set the intercept time of the line as the first break. The length of fitting interval used in experiment, is few samples less than 1/4 width of the arriving wavelet. A quantitative measure of the error involved in first arrival picking is defined as the time length that needed to determine if an event is the first arrival or not. The time length is expressed as a function of frequency bandwidth of the signal and the S/N ratio. For 3 sets of cross-well seismic data, first breaks are picked twice, by manually, and by the proposed method. And at the same time, the error bound for each trace is computed. Experiment results show that good performance of the proposed picking method, and the usefulness of the quantitative error measure in pick-quality evaluation.

Application of Bucket-brigades to Order Picking in Warehouses (물류창고에서 Bucket Brigade를 활용한 오더피킹에 대한 연구)

  • Koo, Pyung-Hoi
    • IE interfaces
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    • v.21 no.3
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    • pp.333-342
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    • 2008
  • Warehouses form an important link in a supply chain network. Among a variety of activities in warehouses, order picking is the process of retrieving a number of items out of storage to meet customer orders. Today, as the transactions through direct sales are wide spread, warehouses often receive a large amount of small orders to be handled within tight time windows, which makes fast and efficient order picking more important than ever. This paper examines a new order picking method where the concept of bucket brigade (BB) is applied. Bucket brigade is a way of dynamically coordinating workers who progressively perform a set of operations along a flow line. In bucket brigades, a worker is not assigned his jobs in a static way. Each worker takes a job from his predecessor when he is free. We identify some considerations when bucket brigades are applied to order picking activities. A new BB picking protocol is presented to improve existing BB picking protocols. Through simulation experiments, the performance of BB order picking is evaluated under various logistics environments.

Changes in Proximate Composition, Free Amino Acid, Free Sugar and Vitamin of Curcuma longa L. and Curcuma atomatica Salib According to Picking Time (울금 품종과 채취시기별 일반성분, 유리아미노산, 유리당 및 비타민 함량의 변화)

  • Kang, Seong-Koo
    • Korean Journal of Food Preservation
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    • v.14 no.6
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    • pp.624-632
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    • 2007
  • Changes in proximate composition, amino acid, free sugar, reducing sugar and vitamin contents of Curcuma longa L. (autumn woolgeom in Korean) and Curcuma atomatica Salib (spring woolgeom) were investigated according to picking time. Moisture, crude ash, crude protein and crude lipid were increased and non nitrogen substances was decreased by extending the picking time. Contents and ratio of total amino acid to essential amino acids was increased by extending the picking time. Free amino acid was increased by extending the picking time. Ratio of essential amino acids to total amino acids was decreased. Fructose was gradually increased, and then glucose, sucrose and total free sugars were decreased by extending the picking time. Amino acid and sugar contents of Curcuma longa. L. were higher than those of Curcuma atomatica Salib. In contents of vitamin C and $B_1$, Curcuma longa L. was decreased and Curcuma atomatica Salib was increased by extending the picking time.

A Single Order Assignment Algorithm Based on Multi-Attribute for Warehouse Order Picking (물류창고 오더피킹에 있어서 다 속성 기반의 싱글오더 할당 알고리즘)

  • Kim, Daebeom
    • Journal of the Korea Society for Simulation
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    • v.28 no.1
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    • pp.1-9
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    • 2019
  • Recently, as the importance of warehouses has increased, much efforts are being made to improve the picking process in order to cope with a small amount of high frequency and fast delivery. This study proposes an algorithm to assign orders to pickers in the situation where Single Order Picking policy is used. This algorithm utilizes five attributes related to picking such as picking processing time, elapsed time after receipt of order, inspection/packing workstation situation, picker error, customer importance. A measure of urgency is introduced so that the units of measure for each attribute are the same. The higher the urgency, the higher the allocation priority. In the proposed algorithm, the allocation policy can be flexibly adjusted according to the operational goal of the picking system by changing the weight of each attribute. Simulation experiments were performed on a hypothetical small logistics warehouse. The results showed excellent performance in terms of system throughput and flow time.

Development of Robot System for Colony Picking (II) - Performance test of the robot system - (콜로니 픽킹 로봇 시스템의 개발 (II) - 로봇 시스템의 성능실험 -)

  • 이현동;김기대;나건영;이영규
    • Journal of Biosystems Engineering
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    • v.28 no.5
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    • pp.449-456
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    • 2003
  • A robot system was developed to pick desired colony. This robot system consisted of an image acquisition process which acquires the image information of colony, an illumination device which irradiates the object once when it gets the image of it, a picking head, a replicating head, a bed for fixing well-plates, and a sterilization device of sterilizing pin stained with colony. Picking pins were washed in an ultrasonic wave washing for takes ten seconds. Picking pins were dipped for sterilizing in alcohol for ten seconds. The time for resterilizing picking pins in a heater was five seconds. This performance test resulted 100% success rate for both the colony picking and the colony replication process. Considering the procedure in which 8 pins were smeared by colony, picked on a well plate, and sterilized as one cycle, the system could carry out one cycle in 110 seconds. It took about 138 minutes to pick around 600 colonies.