Snowplow_Ops_ DSS_Manual - University of Minnesota Duluth

Snowplow_Ops_ DSS_Manual - University of Minnesota Duluth
Minnesota Department of
Transportation
Northland Advanced
Transportation Systems
Research Laboratory
University of Minnesota
Duluth
Decision Support System for
Snowplow Operations in
Northeastern Minnesota
Version 1.00
User’s Manual
Dr. Martha C. Wilson
Yanpeng Zhang
Ravindra Bharadia
July 2004
___________________________________________________________________________
Abstract
This user’s manual describes the use of the Decision Support System (DSS) for Snowplow
Operations in Northeastern Minnesota computer program. This program is designed to assist
winter maintenance supervisors at Minnesota Department of Transportation (Mn/DOT) in
making better decisions through simulation methodology, leading to more effective and
efficient use of limited resources. Essential information of snowplow operations such as time
to bare lane, material application and cost, labor and equipment cost are generated by
operating the program based on the snow event scenarios. In addition, time to bare lane of
each route is presented and compared against performance measure targets, and the average
time to bare lane according to each route class is portrayed as well as that of the routes in the
entire sub-district. An optical disc containing the DSS for Snowplow Operations in
Northeastern Minnesota program is included. The program requires Windows 95® or higher
to operate.
___________________________________________________________________________
The Authors
DR. MARTHA C. WILSON, PH.D., Assistant Professor at the Department of Mechanical
and Industrial Engineering, the University of Minnesota Duluth. She has been the Principal
Investigator throughout the duration of the Snowplow Operations and Resource Management
Project since 2002.
YANPENG ZHANG, M.S. in Engineering Management, University of Minnesota Duluth.
He jointed the research team in the fall of 2003, mainly working on the development of the
simulation model.
RAVINDRA BHARADIA, M.S. in Computer Science, University of Minnesota Duluth. He
jointed the project in the fall of 2003, developing user interface and output report.
___________________________________________________________________________
Acknowledgements
The authors would like to thank the organizations who have made contributions to the
development of this DSS, including Mn/DOT, Northland Advanced Transportation Systems
Research Laboratory (NATSRL), and University of Minnesota Duluth. Special thanks go to
Mr. Gregory Pierzina and Mr. Tim Sheehy, area supervisor and area superintendent
respectively of District 1B of Mn/DOT, Virginia Minnesota, for their great cooperation in this
project.
Table of Contents
1
Overview ............................................................................................................................ 1
1.1
Purpose of the DSS for Snowplow Operations .......................................................... 1
1.2
Who Should Use the DSS .......................................................................................... 1
1.3
Components of the DSS ............................................................................................. 1
1.4
Technical Support (Getting Help) .............................................................................. 2
2 Installation.......................................................................................................................... 3
2.1
System Requirements ................................................................................................. 3
2.1.1
Hardware ............................................................................................................ 3
2.1.2
Software ............................................................................................................. 3
2.2
Disc Contents ............................................................................................................. 3
2.3
Installation Procedures ............................................................................................... 3
3 Running the DSS for Snowplow Operations...................................................................... 4
Chapter 1
1 Overview
1.1 Purpose of the DSS for Snowplow Operations
DSSs in general and simulation in particular provide a platform for conveniently
experimenting and analyzing different scenarios in the operations. Decisions in snowplow
operations are based on numerous factors. Any appreciable change in a single variable could
lead to significant variation in decision-making. For instance, the weather conditions change
continuously, which requires the management of operations to adjust their decisions
correspondingly. Thus, the capability of running different scenarios in a timely manner will
greatly assist the winter maintenance managers in their decision-making and benefit the
general public whose life largely relies on the transportation efficiency.
Additionally, successfully developed and implemented, DSSs will serve as a general
management tool that can be modified for future needs. The flexibility and ease of updating
will be integrated in this DSS, which will enable the software maintenance personnel to
conveniently revise the model in case of change in route definition or equipment availability
and assignment.
1.2 Who Should Use the DSS
The DSS is intended for use by the winter maintenance managers and supervisors at Mn/DOT
Virginia Sub-District 1 B to improve decision-making regarding snowplow operations
management.
1.3 Components of the DSS
Generally, the DSS consists of four components: data base, simulation model, user interface,
and output report. The data base contains the essential information of snowplow operations
for the DSS to operate. The simulation model includes all algorithms and rules necessary for
decision making process. The user interface enables effective interaction between DSS users
and the machine. The output report presents the simulated results to the users.
1
Decision Support
system
Data Base
Simulation
Model
User
Interface
Output
Report
1.4 Technical Support (Getting Help)
To make the DSS easier to use, help is available in several ways.
•
•
•
Go through Running the DSS for Snowplow Operations provided in Chapter
3. This will introduce you to many of the features of the DSS.
Read this User’s Manual and keep it handy as a reference as you begin to use
the DSS.
If the sources above do not answer your questions, we will be glad to help
you through any problem you may have with the program. Please contact:
Snowplow Simulation Research
105 Voss-Kovach Hall
1305 Ordean Court
Duluth, MN 55812
Telephone: 218-726-6161
Fax: 218-726-8596
2
Chapter 2
2 Installation
2.1 System Requirements
2.1.1 Hardware
•
•
•
166 MHz Intel Pentium processor or greater
32 MB or more of installed RAM
An optical drive
2.1.2 Software
•
•
Microsoft Windows® Version 95 or higher
ProModel® 2002 or higher
2.2 Disc Contents
The installation optical disc contains several files necessary to install the DSS for Snowplow
Operations for Northeastern Minnesota. The following is a list of the installation disc. If any
of the following files are missing, the DSS may have critical problem running.
File Name
File Type
File Size
PROMOD4
All_Routes
Results
User_Interface
All_Routes
ALL_RO~1
GLB File
Microsoft Excel Worksheet
Microsoft Excel Worksheet
Microsoft Excel Worksheet
MOD File
Model Package
191 kb
62 kb
29 kb
338 kb
149 kb
237 kb
2.3 Installation Procedures
Follow these steps to install the DSS:
1. Install ProModel® 2002 or higher version, following the installation guide provided
by the software vendor.
2. Copy the entire folder “Models&Interface” on the installation disc to the drive C: \ on
your hard disc.
3
Chapter 3
3 Running the DSS for Snowplow Operations
Follow the steps below to simulate a snowplow operation.
1. Double click on C: drive and then trouble click on the folder “Models&Interface”.
2. Open the Excel® file “User_Interface” in the “Models&Interface” folder and a general
interface will show up as follows.
3. Click on “About Program” to gain a brief introduction of the program; Click on “Exit
Program” to exit the DSS; Click on “Start Simulation” to start simulation and then a
dialogue window requiring the user to input critical parameters of snowplow
operations will appear as follows.
4
4. In the dialogue window shown above, select the routes you want to simulate by
checking “All” or a combination of several route numbers. Continue to fill out “Storm
Characteristics”, “Pavement Temperature”, and “Material Application”. If you want to
erase all the inputs and start over, click on “Clear” button at the lower right corner.
Otherwise, make sure all the inputs are correct and click on the orange “Simulate!”
button and the system will automatically launch ProModel® to run the simulation.
5. The simulation process may take a few minutes. When it is completed, a small
window as follows will pop up.
6. Click on “No” button in the above window because another more advanced output
report has been created when the simulation was completed. To view the output report,
activate the Excel® file “Results” by clicking on the window named “Results” on your
taskbar at the lowest of your computer screen.
7. Close the dialogue window “Simulation Results” shown as follows.
5
8. By clicking on the corresponding tabs in this Excel® file, you can view the simulated
results, performance plots of the different route classes and the entire sub-district, and
information you just inputted at the beginning of the simulation, in different
spreadsheets.
9. You can now print the output reports by the appropriate operations in Excel®. Close
the active files including ProModel® simulation file “All_Routes” and Excel® files
“User_Interface” and “Results” when all inquiries are completed.
10. Repeat these steps if you want to simulate other snow events.
6
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