Ticketless Parking Structure
By USC EE579 Group 10
Beibei
Zhang, Ming-Tsan Yueh, Sa Yang
Motivation:
We want to design a system
that could combine what we learned in this course together. We want a system
that is low-cost, low-energy and easy to deploy in our daily life. That¡¯s why
we came to this idea to build a parking system using Tmote Sky.
System
Features:
w Mobile device app to register and reserve parking
space
w Automatic parking space detection
w Parking information tracking
Essential
Component:
Tmote Sky
Ultra-low power wireless sensor module
Humidity, light and temperature sensor
Leverage industry standards like USB and IEEE 802.15.4
Increase robustness while decreasing cost and package
size
System
Architecture:
System
Algorithm:
w Tmote (Sender) Side:
• Two parts are involved:
– A) Oscilloscope:
•
Sample the
default sensor via DemoSensor
– B) DemoSensorC:
•
Components new VoltageC()
as DemoSensor
•
Change the VoltageC()
sensor into HamamatsuS1087ParC()
w Server Side:
– Keep getting the information from Tmote every second
– Server socket (as a parent socket) listens to the
users RSVP
– Multiple child sockets accept from user connections
– Get user info and return a lot number
Tmote
Signal Feedback:
Space0, Space3 are occupied
Two users parked at Space 1 and 2
User 3 left parking spot
User 1 left parking spot, User 3 parked without reservation
Android
UI:
System
Evaluation:
w Efficiency:
¡ì Using HashMap as database to gain fast access
¡ì Using Socket between server and users: flexible,
sufficient, low network traffic
w Safety:
¡ì Synchronized method to avoid concurrency access and
data error
¡ì Lightweight design to avoid dead lock
¡ì Various test cases (more than 20) before real-world
implementation
w Improvement:
¡ì Dynamic threshold
¡ì Server-side GUI
Related
Works:
w [1]
Sangwon Lee, Dukhee Yoon, Amitabha Ghosh, ¡°Intelligent Parking Lot Application
Using Wireless Sensor Networks¡±
w [2]
Vanessa W.S. Tang, Yuan Zheng, Jiannong Cao, ¡°An Intelligent Car Park
Management System based on Wireless Sensor Networks¡±
w [3] J. Barton,
J. Buckley, B. O¡¯Flynn, S.C. O¡¯Mathuna,
J. P. Benson, T. O¡¯Donovan, U. Roedig, C. Sreenan, ¡°The D-Systems Project -
Wireless Sensor Networks for Car-Park Management¡±
w [4] J. P.
Benson, T. O¡¯Donovan, P. O¡¯Sullivan, U. Roedig, C. Sreenan, J. Barton, A.
Murphy, B. O¡¯Flynn, ¡°Car-Park Management using
Wireless Sensor Networks¡±
Acknowledgement:
We would like to thank our Professor Bhaskar Krishnamachari and TA Maheswaran Sathiamoorthy for their help and feedback.