開發於平板電腦之行車現場教學系統應用研究

The Study of Developing On-board Driver Learning System Based on Tablet

余明宗(Ming-Tsung Yu)

指導教授 ： 姚修慎

元智大學/資訊學院/資訊工程學系/碩士(2012年)

摘要

本研究利用Android系統之平板電腦，其內建MEMS、GPS、攝影機、WIFI、藍牙介面，透過OBD2 Reader取得即時之車輛行駛資訊，包含前後加速度、橫向加速度、GPS座標、時間、行車速度、RPM、MAF等有用數據。

分析駕駛人之動作，包含加速、煞車、停等、滑行與等速與油耗之關係，進而發現於市區道路之滑行距離與煞車距離之比值、速度變化加總與移動距離之比值對於油耗影響甚大。以設定並調整門檻值之方式判別加速度變化級距。

開發設計一資訊教學系統提供科學化的駕駛行為數據，行駛過程中以聲音及畫面提醒之方式，讓駕駛了解油耗之原因進而改善駕駛行為，若不當行為偵測時，以警示之方式告知並教育改善達到行動學習；行車結束時可重現歷程中之事件紀錄，包含GPS行走地圖、行走影片、不當動作圖表、油耗與動作關係等，可觀看單一人之紀錄或多人比較以達到同儕式教學之效果。使用本資訊教學系統於成對樣本T檢定當中，可看出對於不當動作及油耗改善都有效果。

關鍵字

OBD2 ； 駕駛行為 ； 平板電腦 ； 現場教學

並列摘要

In this research, an Android-based tablet with built-in MEMS, GPS, Camera, WIFI and Bluetooth interface, is adopted to retrieve real-time traffic information through OBD2 Reader. The information includes 3-axis accelerometer values, GPS coordinates, time, speed, RPM, MAF, ...etc.

The drivers’ behavior is analyzed, e.g., the relationship between the fuel consumption and different manners of acceleration, braking, stopping and sliding behavior. We conclude that on the local roads, the ratio of sliding distance to braking distance and the ratio of the sum of speed variation to travel distance have great impact on fuel consumption. In addition, a set of threshold values is obtained to determine the level of acceleration variation.

Moreover, we design a system which can provide scientific data related to the driving behavior. It reminds the driver about the main factors affecting fuel consumption through sound or screen information. While misbehavior appears, it warns the driver to improve his behavior. The driving behavior is recorded and can be replayed after the driver arrive the destination, including GPS tracking maps, moving videos, the charts of misbehavior, and the relationship between fuel consumption and driving behaviors. Besides, the driver can read personal or group reports, and then compare with his driving behaviors so as to achieve the effect of peer teaching. Finally, a paired t-test is made and it had been shown that this system significantly improves the fuel consumption and the misbehavior.

並列關鍵字

OBD2 ； Driving behavior ； Tablet ； On-board learning

參考文獻

8. 洪詮舜，「駕駛訓練之輔助教學系統」，元智大學碩士論文，2008。

11. 張世彗，行為改變技術，五南出版社，2007。

13. 陳瑄易、林育輝、林怡君、周偉堯，基於車輛負載模型之智慧節能駕駛輔助系統，南區統計研討會，2012。

19. 蔡宜良，道路特徵對行車的影響之研究，元智大學資訊工程學系，碩士論文，2008。

7. 林煥為，行車轉彎之行為模式辨認，元智大學資訊工程學系，碩士論文，2008。