1. Digital Carpool Aid Mid-semester Presentation Senior Design I March 5, 2015

2. Team Tanner Weissinger, Computer Engineering Team Leader Tyler Hilliard, Electrical Engineering Marshal Webb, Electrical Engineering Jordan Clark, Electrical Engineering Spencer McCoy, Electrical Engineering

3. Faculty Advisor Dr. Sherif Abdelwahed, Professor ECE Department

4. Problem The carpool process is time-consuming and stressful Current solutions are either expensive or don’t completely solve the problem [1] Human error in the current process could result in security problems for children

5. Solution Digital Carpool Aid will keep a record of cars as they enter the campus The system then determines which children the car is there to pick up and sends an automatic alert to the child’s homeroom teacher

6. System Overview

7. RFID Scanner to identify vehicles Rangefinder to detect vehicles Microcontroller Digital Camera to confirm drivers Wi Fi/Ethernet Connection to school’s network

8. System Overview (cont.) Microcontroller Power Supply Camera Rangefinder RFID Scanner WIFI Antenna Web App Ethernet Port RFID Antenna

9. Constraints

10. Technical Constraints NameDescription RFID Detection Range The RFID reader must be able to detect and read passive RFID tags at a range of 5ft. Wi-Fi Connection Range The wireless antenna must be able to detect and connect to Wi-Fi access points within 150ft. Server Function The server must host and update the web-app when 50 users are logged in simultaneously.

11. Practical Constraints TypeNameDescription SustainabilityRFID Tag Recyclability RFID tags must be serviceable for at least 2 years EconomicRFID Tag Cost Cost per family must not exceed $10 per year. EthicalCamera Disconnect System must be able to function with or without the camera SafetyRFID Tag Data RFID tags must not contain any sensitive personal information.

12. Practical Constraints (cont.) Sustainability: RFID Tag Recyclability Each Tag must be serviceable for at least 2 years Tag IDs must be reprogrammable RFID Tags construction must be durable

13. Practical Constraints (cont.) Economic: RFID Tag Cost The cost of use for each family must not exceed 10 dollars per year. This cost must include 2 RFID tags per family The price point is set at 10 dollars per family per year to account for the system and administrative cost incurred by the school.

14. Approach

15. Microcontroller Raspberry Pi Model B+ Relatively Inexpensive Image processing Capability Web-server capability Modular Design Built-in USB and Ethernet ports [2]

16. RFID Tags Passive vs. Active RFID systems [3]

17. RFID Sensor Thinkify TR-65 RFID Reader Module Ultra-high Frequency 4m Read Range USDA Tested [4] [5]

18. Other Components Raspberry Pi Camera Board 5 megapixel Can be controlled with Python Maxbotix Ultrasonic Rangefinder 6 meter range Can be controlled with Python USB WiFi Module with Antenna Up to 150Mbps up and down Up to 300ft range Power Converter Custom Fabricated [6] [8] [7]

19. Web-App Written in Python Designed around the Flask framework Supports faculty accounts Utilizes SQL databases on the school’s network Minimal security risk [9]

20. Progress

21. Hardware Testing Rangefinder Testing Digital Camera Testing

22. Server Functionality Testing Example Web-App

23. Timeline JanuaryFebruaryMarchApril Research, Basic Design, Analysis Order Parts, Hardware Testing, Begin web-app development Complete Web-app, Program Devices, Hardware adjustments, Final Testing Present Prototype

24. References [1] MHR Technologies. [Online]. Available: http://www.mhrtechnologies.com/index.php. [Accessed: Mar 4, 2015]. [2] "Raspberry Pi Model B+ 512MB RAM," adafruit. [Online]. Available: http://www.adafruit.com/product/1914. [Accessed: Mar 4, 2015]. [3] F. Thornton, "RFID Security - Part 1: RFID radio basics and architecture," EE Times. [Online]. Available: http://www.analog-eetimes.com/en/rfid- security-part-1-rfid-radio-basics-and- architecture.html?cmp_id=71&news_id=222901037. [Accessed: Mar 4, 2015]. [4] National Technology and Development Program, "Using Radio Frequency Identification (RFID) for Monitoring Trees in the Forest: State-of-the- Technology Investigation," USDA, April 2014. [Online]. Available: http://www.fs.fed.us/t- d/pubs/pdfpubs/pdf14191805/pdf14191805dpi100.pdf. [5] "TR-65 RFID Reader Module (USB, TTL, RS232)," Thinkify’s RFID Store. [Online]. Available: http://thinkify.highwire.com/product/tr-50-rfid-reader- module. [Accessed: Mar 4, 2015].

25. References (cont.) [6] "Raspberry Pi Camera Board," adafruit. [Online]. Available: http://www.adafruit.com/products/1367. [Accessed: Mar 4, 2015]. [7] "Maxbotix Ultrasonic Rangefinder - LV-EZ4 - LV-EZ4," adafruit. [Online]. Available: http://www.adafruit.com/product/982. [Accessed: Mar 4, 2015]. [8] "USB WiFi (802.11b/g/n) Module with Antenna for Raspberry Pi," adafruit. [Online]. Available: http://www.adafruit.com/product/1030. [Accessed: Mar 4, 2015]. [9] M. Grinberg, “Flask Web Development," Flask Book, May 2014. [Online]. Available: http://flaskbook.com. [Accessed: Mar 4, 2015].

26. Digital Carpool Aid Mid-semester Presentation Senior Design I March 5, 2015