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Evaluation of Vending Machine Location with Simulation. IL HAN CHUNG. Team Member. ME KYUNG BAE. YU MEE LEE. LUC. 2006 . 11 . 15. Definition of Problem The Current Location of Vending Machine Data Collection Method for Solving Problem Result of Simulation. Contents. - PowerPoint PPT Presentation
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Evaluation of Vending Machine Locationwith Simulation
Evaluation of Vending Machine Locationwith Simulation
2006 . 11 . 15
IL HAN CHUNG
YU MEE LEEME KYUNG BAE
LUC
TeamMember
ContentsContents
I. Definition of Problem
II. The Current Location of Vending Machine
III. Data Collection
IV. Method for Solving Problem
V. Result of Simulation
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Definition of ProblemDefinition of Problem
Purpose
Reducing the Waiting Time of Customers
Reducing Routing Distance of Customers
Reducing of Shortage count of Raw material with Inspection/
Maintenance Interval
Range of Problem
Vending Machine in PNU
Consider Vending Machine for Beverage (with Can)
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The Current Location of Vending Machine The Current Location of Vending Machine
# of Building : 43# of Bending Machine : 54
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Data Collection (Continued) Data Collection (Continued)
Customers
Under-graduate/graduate students
Arrival time to PNU
Routing Path of Students
Ex) Sojourn time of Building 1
Ex) Next Moving Building to Current Building
Probability of using Vending Machine in current building
Service Time of Vending Machine
Probability of Leaving Queue of Vending Machine.
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Data Collection Data Collection
Service man
Routing Path for inspecting vending machine
Distance and time of each path
Inspection or maintenance time of vending machine
# of available service per maintenance
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The Method for Solving Problem The Method for Solving Problem
The Expression of Building
Consider Station Module
Routing Path of Students
Consider Route Module
Entity Type
Under-graduate Students : Maybe, Move to Several Building for Class
Graduate Students : Maybe, Sojourn to One Building
Resource
Beverage
Decide
Probability for Drinking Beverage in Current Building
Probability for Moving Current Building to Another Building
And So on…
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Result of Simulation Result of Simulation
We will consider several case as following
# of vending machine in each building
Routing Path of service man
Maintenance/Inspection Interval of service man
Statistics for Result
Waiting Time in Queue
Routing Distance Until Searching Vending Machine
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교수님 , 11 월 15 일 수업 후 교수님께서 주신 Tip 을 토대로 늦게까지 상의를 해 보았습니다 .
어제 너무 열심히 상의를 하느라 마감시간을 놓쳐 버렸습니다 .^^;
다음 프레젠테이션을 증거로 올리겠습니다 .
수정 프로젝트
ContentsContents
I. Definition of Problem
II. Data Collection
III. Simulation Approach
IV. Result of Simulation
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I. Definition of ProblemI. Definition of Problem
Introduction
Vending machines are convenient for customer to buy the favorite beverages.
However, sometimes, some favorite beverages are empty before service man’s inspection.
Objectives
Increasing the customer’s satisfaction.
Increasing the profit of vending machines.
Reducing of the shortage of beverage by inspection / maintenance.
Scope of problem
Vending machines for beverage can only.
Four vending machines at mechanical buildings in PNU have close relationship of
movement of customer.
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I. Definition of Problem (cont-)I. Definition of Problem (cont-)
The location of considered vending machines
The location of considered
vending machines.
Number considered vending
machines: 4
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I. Definition of Problem (cont-)I. Definition of Problem (cont-)
Flow chart of operations
Customer Drinking?Select
beverage?Go to Bld.?
Other Blds.
Leaving
Customer
Service man
Service man Vending machine Finish
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II. Data CollectionII. Data Collection
Customer
Under-graduate / Graduate / Passing
student
Arrival time of each type
Portion of drinking of each type
Portion of selecting favorite
beverage of each type
Portion of coming the building
Vending machine
Types of beverage
Number of each beverage type
Service time of vending machine
Service man
Inspection time of service man
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III. Simulation ApproachIII. Simulation Approach
Formulate problem
Collect data and define a model
Construct a computer program
and verify
Valid?
Make pilot runs
Design experiments
Valid?
Make production runs
Analyze output
Select the “best”
Yes
Yes
No
No
The steps in simulation study Validation method
Using statistical tools for
analyzing.
- No. of sold beverages.
- Waiting time of
customer.
- No. of customer in
queue.
- …
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IV. Result of SimulationIV. Result of Simulation
Alternatives
Number of position of each beverage in the vending machine.
Number of vending machine in each building.
Maintenance / inspection interval of service man.
Statistics
No. of sold beverages.
Waiting time of customer.
No. of customer in queue.
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