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commit e9a888914960ed356ac071b494b4f06025ccd69c 1 parent 41e8e09
VictoryIsMine VictoryIsMine authored
6 doc/paper/report.bib
... ... @@ -1,3 +1,9 @@
  1 +@Misc{ maxbotix:maxsonar-datasheet,
  2 + title = "{LV-MaxSonar-EZ1 High Performance Sonar Range Finder}",
  3 + publisher = "{MaxBotix Inc.}",
  4 + note = "\url{http://www.maxbotix.com/uploads/LV-MaxSonar-EZ1-Datasheet.pdf}",
  5 +}
  6 +
1 7 @Misc{ xbow:telosb-datasheet,
2 8 title = "{TelosB Datasheet}",
3 9 publisher = "{Crossbow}",
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89 doc/paper/report.tex
@@ -178,8 +178,54 @@ \section{Design}\label{sec:design}
178 178 knowledge and is described below.
179 179
180 180 \subsection{Hardware}
  181 +When choosing the hardware for our PGI system we had specific goals in mind. The system would need to be low cost, reliable, power efficient, and easily customized to meet the needs of the specific structure/lot.
181 182
182   -In order to monitor the status of individual parking spaces in a lot or garage we need reliable, low cost hardware
  183 +We believe most of our potential business would come from upgrading existing parking structures versus that of new construction. This is why we believe the need for the system to be easily customized is the most important requirement for a successful adoption by the parking industry. When adding a system such as this it is typically the installation cost that are prohibitive vs the devices themselves
  184 +
  185 +By supporting many different sensor types and configurations for existing construction we are providing new construction many options as well.
  186 +
  187 +\subsubsection{Parking Space Monitors}
  188 +
  189 +The Parking Space Monitors need to be able to do more than just determine if a vehicle is present in a parking space. They need to be able to run on a set of batteries for an extended period of time, support multiple sensor types and interfaces, wireless transmit relevant data to a base-station. For all these reasons we chose the TelosB wireless sensor module as the base to our Parking Space Monitors. The TelosBs provide a multitude of features and sensor and still manages to support.
  190 +
  191 +\begin{figure}
  192 + \begin{center}
  193 + \includegraphics[width=\columnwidth]{figures/telosb}
  194 + \end{center}
  195 + \caption{TelosB.}
  196 + \label{fig:telosb}
  197 +\end{figure}
  198 +
  199 +The TelosB is an ultra low power IEEE 802.15.4 compliant wireless sensor module. More about the TelosB.
  200 +
  201 +By choosing the TelosB we have many different options to attach sensors with
  202 +The parking space monitors are the
  203 +
  204 +There are many different types of sensors that we could have been used to monitor if a parking space is occupied or vacant. These include infrared range finders, magnetic
  205 +
  206 +We chose to use ultra sonic
  207 +
  208 +\begin{figure}
  209 + \begin{center}
  210 + \includegraphics[width=\columnwidth]{figures/range_finder}
  211 + \end{center}
  212 + \caption{LV-MaxSonar-EZ1.}
  213 + \label{fig:range_finder}
  214 +\end{figure}
  215 +
  216 +To actual
  217 +
  218 +LV-MaxSonar-EZ1 - Ultrasonic Rangefinder
  219 +Supply voltage 2.5V to 5.5V
  220 +Detects objects from 6 inches out to 254 inches with 1 inch resolution (0-6 inches range as 6 inches)
  221 +Output formats include pulse width, analog voltage, and serial digital
  222 +
  223 +\subsubsection{Base-Station}
  224 +Following with our theme of low cost we tried to keep the requirements of the base-station to a minimum as well. The base-station will support multiple
  225 +
  226 +The base-station has two key roles. First
  227 +
  228 +In order to reliably and cost effectively monitor the status of individual parking spaces in a lot or garage we need reliable, low cost hardware
183 229
184 230 The TelosB mote was chosen to monitor
185 231
@@ -197,26 +243,27 @@ \subsection{Hardware}
197 243
198 244 \subsection{Collection Software}
199 245
200   -Yup we had software.
  246 +\subsubsection{Parking Space Monitors}
  247 +
  248 +The Parking Space Monitors are powered by TinyOS. We chose TinyOS because it fully supports the TelosB and provides many features that rapidly speed-up development and
  249 +
  250 +One of out key design goals was wireless reliability. We need to ensure that packets containing sensor details always make it back to the base-station for processing. This can be very difficult in dynamic environment such as a parking structure.
201 251
202   -A paragraph or two about TinyOS and building whatever we used there
203   -(interfaces, interaction with other sensors and base
204   -station, CTP)~\cite{tep119:collection}.
205 252
206   -A paragraph about the base station software and what it does.
  253 +CTP stuff~\cite{tep119:collection}.
  254 +
  255 +\subsubsection{Base-Station}
  256 +
  257 +The base-station has multiple function. It is responsible for configuring the Parking Space Monitors, ensuring the Parking Space Monitors are
  258 +
  259 +The base station collects sensor reading from the parking space monitors and determines what data is import
  260 +
  261 +Collects sensor data.
  262 +
  263 +Determines what data is important
  264 +
  265 +Since the base-station has a TelosB.
207 266
208   -% from proposal
209   -The major components of this project are building and developing the
210   -sensing devices, writing and testing the networking and communications
211   -software to handle data delivery, and creating a friendly front end to
212   -present and track the information as needed.
213   -If we discover any of these components are significantly easier than
214   -others, it is easy to combine forces to develop new/better methods for any
215   -of them.
216   -We also have an interest in discovering more specific information of
217   -existing systems and getting up-to-date in the area of intelligent
218   -transportation systems.
219   -% end from proposal
220 267
221 268 \subsection{Aggregation Software}
222 269
@@ -390,7 +437,11 @@ \section{Experiment}\label{sec:experiment}
390 437
391 438 \subsection{Sensing and Sending}
392 439
393   -Discussion of how sensing and sending was tested
  440 +Sensing and sending from the Parking Space Monitors to the base-station to the
  441 +
  442 +Testing of the sensing and sending was extensive.
  443 +
  444 +Voltage rangefinder
394 445
395 446 \subsection{Backend and Frontend}
396 447

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