1. Social Drive: A Crowdsourcing-based Vehicular Social Networking System for Green Transportation Speaker: Kaiwen Weng Author: Xiping Hu, Victor C. M. Leung, Kevin Garmen Li, Edmond Kong, Haochen Zhang, Nambiar Shruti Surendrakumar, Peyman TalebiFard ACM MSWiM-DIVANet symp., Barcelona, Spain, 2013, pp. 85-92.

2. OUTLINE 1. INTRODUCTION 2. SYSTEM OVERVIEW 3. IMPLEMENTATION STRATEGIES 4. EVALUATIONS 5. CONCLUSIONS

3. 1. INTRODUCTION  以智慧型裝置收集車輛資訊及感測器數 值， 建立一個 VSNs (Vehicular Social Networks).  透過 OBD-II 介面讀取車輛相關資訊 ， 以及智慧型手機的內建感測器數 值， 如 ： 3 軸 加速度計 、 陀螺儀和 GPS 等 ， 將以上感測器與車內資訊收集到智慧型手機中 ， 再 根據資訊進行駕駛評分 ， 根據分數來判別駕駛等級 。  將車輛資訊與駕駛等級等上傳到雲端伺服器後 ， 經由使用者同意後則自動發佈訊 息至 Facebook 平台 ， 讓使用者的好友也能知道行車的安全性 。

4. OUTLINE 1. INTRODUCTION 2. SYSTEM OVERVIEW 1. MOBILE PLATFORM 2. CLOUD PLATFORM 3. SOCIAL WEB APPLICATION 3. IMPLEMENTATION STRATEGIES 4. EVALUATIONS 5. CONCLUSIONS

5. 2. SYSTEM OVERVIEW

6. 2.1 SOCIAL DRIVE - MOBILE PLATFORM 1. Rating mechanism of Social Drive mobile application 2. User interface of Social Drive mobile application

7. 2.2 SOCIAL DRIVE - CLOUD PLATFORM The cloud platform of Social Drive works as a bridge between the Social Drive mobile platform and Social Drive web application on Facebook. It provides a database to store and manage the diverse trip and driving information uploaded from Social Drive on mobile devices. Also, it provides a free web hosting service for running the web application of Social Drive, which can be used to get the authentication of Facebook, and automatically post the trip information of Social Drive for the users’ Facebook friends.

8. 2.3 SOCIAL DRIVE - SOCIAL WEB APPLICATION

9. OUTLINE 1. INTRODUCTION 2. SYSTEM OVERVIEW 3. IMPLEMENTATION STRATEGIES 1. VEHICULAR DATA COLLECTION AND STORAGE 2. MOBILE SOCIAL APPLICATION 3. SOCIAL WEB APPLICATION 4. EVALUATIONS 5. CONCLUSIONS

10. 3.1 VEHICULAR DATA COLLECTION AND STORAGE Collect data type: Time Lat and Long RPM Speed Fuel Level Throttle Distance ……

11. 3.2 MOBILE SOCIAL APPLICATION

12. 3.3 SOCIAL WEB APPLICATION The implementation and deployment of the Social Drive web application is based on the PaaS cloud platform – Heroku. One of the major challenges to make the web application of Social Drive run on this platform and update data to the remote repository is the authentication of the secure shell (SSH) key, but it could be approached by manually configuring the SSH configuration file and setting the correct path to the SSH key.

13. OUTLINE 1. INTRODUCTION 2. SYSTEM OVERVIEW 3. IMPLEMENTATION STRATEGIES 4. EVALUATIONS 1. TIME LATENCY 2. NETWORKING OVERHEAD 3. BATTERY CONSUMPTION 5. CONCLUSIONS

14. 4.1 TIME LATENCY

15. 4.2 NETWORKING OVERHEAD

16. 4.3 BATTERY CONSUMPTION

17. OUTLINE 1. INTRODUCTION 2. SYSTEM OVERVIEW 3. IMPLEMENTATION STRATEGIES 4. EVALUATIONS 5. CONCLUSIONS

18.  A novel crowdsourcing-based vehicular social networking (VSN) system for green transportation.  Social Drive integrates the standard vehicular On Board Diagnostics (OBD) module, leverages the advantages of cloud computing and popular social networks, and incorporates a novel rating mechanism about the fuel economy of drivers.  Our practical experiments have demonstrated that Social Drive works efficiently with low battery consumption and low networking overhead on popular mobile devices.