Transcript Mid-course Design Review Team 8 Alternative Choices November 26th, 2012 Department of Electrical and Computer Engineering Advisor: Prof.

Mid-course Design Review
Team 8
Alternative Choices
November 26th, 2012
Department of Electrical and Computer Engineering
Advisor: Prof. Gong
Team Alternative Choices
Professor Gong
Advisor
Stenli Duka
CSE
Vangjush Dedo
EE
Salvador Rivera
EE
Lusheng Tang
EE
Department of Electrical and Computer Engineering
Advisor: Prof. Gong
Inefficient Food Service in US Campuses
 Current Food Service
• Slow and overcrowded
during peak hours
• Safety hazard inside
facilities
 Students have no way
of knowing if a place
is crowded or not
 Inefficient use of
school resources
Department of Electrical and Computer Engineering
Advisor: Prof. Gong
Requirements Analysis: Specifications
 Real-Time measurement of number of people
 Facility specific information
 Multiple entrances
 Compact design
 Information accessible online
 Updates every thirty seconds
 Detect multiple people leaving/entering
Department of Electrical and Computer Engineering
Advisor: Prof. Gong
Requirements Analysis: Inputs and Outputs
 Input
• Sensor data
 Output
•
•
•
•
Current people count in a food facility
History of people count in a food facility
Expected amount of people in future
Offer nearby alternate locations with less people
Department of Electrical and Computer Engineering
Advisor: Prof. Gong
Our Solution: Block Diagram
Data Collection
Data Storage
Power Supply
Sensors
Database
Processing
Database Modification
DB Connection
Wireless Transmission
User Interface
Real-Time Data
History
Alternatives
Future Prediction
Database Processing
Department of Electrical and Computer Engineering
Advisor: Prof. Gong
Sensors
 Requirement
• Two sensors to proper count up/down
• Availability: 200 ms
• Continuous detection
 Demonstrated
• Sensors detect movement for count
• Slow response in between detections
Department of Electrical and Computer Engineering
Advisor: Prof. Gong
Sensors Challenge
 Primary requirement
• Availability: 200 ms
• In-lab value: 1 second
• Not fast enough for our purpose
 PIR Implementation
• Unstable readings
• Need 5V supply which Arduino
can’t output
Department of Electrical and Computer Engineering
Advisor: Prof. Gong
Power Constraints
 Operating voltages
• Arduino: 5V
• Sensors: 5V-12V
 Power supply
• USB power from computer
• Arduino outputs 5V
• Actual output: 4.3V
• Not enough for sensors
• Additional 5V DC source needed
Department of Electrical and Computer Engineering
Advisor: Prof. Gong
Arduino Yun
 Data
• Counting based on direction/detection of sensor
• Reset state if person turns back after first sensor
• State machine determines action from sensor triggers
• Count up/down
 Implementation
• Arduino Yun
Department of Electrical and Computer Engineering
Advisor: Prof. Gong
Wireless Transmission
 Requirements
• Occurs every 30 seconds
• Connect to school Wi-Fi
 Progress
• Successful connection to WPA-PSK protected AP
• Correct transmission to database every count change
• Unable to use school Wi-Fi
• WPA2 Enterprise needed
Department of Electrical and Computer Engineering
Advisor: Prof. Gong
Database
 Requirements
• Store people count every 30 seconds
• Timestamp for each people count
• Location for each people count
 Progress
• MongoDB database set up on
MongoHQ
• Access using MongoHQ REST API
• Successfully updated using Linux OS
(Linino) on Arduino Yun
Department of Electrical and Computer Engineering
Advisor: Prof. Gong
User Interface
 Requirements
• Easy to use
• Deliver results
- Real-Time Data
- Alternative Choices
- History
 Progress
• Website built
• Current count display
• History count display
• Python using Flask framework
• Currently hosted locally
Department of Electrical and Computer Engineering
Advisor: Prof. Gong
Proposed MDR Deliverables
 Demonstration of People Counting
• PIR sensor data processed on Arduino Yun
• Data wireless transmitted to database
 Demonstration of User Interface
• Interpret database
-
Display real-time people count
Display history
Department of Electrical and Computer Engineering
Advisor: Prof. Gong
Demo
Department of Electrical and Computer Engineering
Advisor: Prof. Gong
Looking Ahead: CDR
 Upgrade to better sensors (Salvador)
• Active sensing
• Improved sensor availability: At least ½ second
• Power supply
 Wireless communication (Lusheng)
• Connect to school Wi-Fi
 Upgrade Arduino Yun processor (Vangjush)
• Multiple sets (2) of sensor data handling
• Multiple door monitoring
 User Interface (Stenli)
• Interpret data from multiple entrances of a building
• Display of people count in multiple buildings
Department of Electrical and Computer Engineering
Advisor: Prof. Gong
Thank You
Department of Electrical and Computer Engineering
Advisor: Prof. Gong