The Design of the Steering Wheel with Anti-fatigue Driving for Vehicles Based on Pattern Recognition

The paper described a design of steering wheel with anti-fatigue driving function. This design utilizes pattern recognition technology, was set transformer angular displacement sensor, GPS module and embedded system in the steering wheel. The transformer angular displacement sensor used to collect corner voltage changes of steering wheel. Then the embedded system executes pattern recognition to waveform that consisting by continuously varying voltage, in order to determine the driver fatigue. The system also uses changes of GPS data to determine the state in the vehicle such as stop or action, in order to control the algorithm periods of continuous driving time. Finally, the system provides early warning for fatigue driving combining these two parameters.

I. Introduction

The anti-fatigue driving technique is still in the study abroad. They developed some products, however, the application of these products needs refitting vehicles or redesign and takes much money. The Driver Fatigue Monitor (DD850) produced by U.S. Attention Technologies collects drivers' eye information by the infrared camera. It uses the PERCLOS as its fatigue driving norm and can be installed directly installed on the dashboard. But the DD850 is valid only at night and could be great deviations in the information collection at the eyes, so it has little effect for people with small eyes or sunglasses drivers. The S.A.M. fatigue warning device developed by U.S. Digital Installations uses magnetic bar that was fixed under the steering wheel to detect angle of the Steering wheel. If the driver doesn't carry out any corrective action on the steering wheel in the period of time, the system infers that the driver has become into the fatigue, and triggers the alarm. But the false positives of the system are very serious on the snake-like way, a continuous curve, mountain drive and circular path.