Approaching vehicle alert system for pedestrians using UWB impulse radio
2010
Accidents between battery-operated vehicles and pedestrians are expected to increase as electric vehicles (EV) or plug-in hybrid vehicles (PHV) are widely used in near future because of small ambient noise of EV/PHV. To prevent such accidents, a portable alert system for pedestrians to detect approaching vehicle is proposed in this paper. The alert system exploits ultra-wideband impulse radio (UWB-IR) for accurately measuring a distance between a portable mobile terminal and a target vehicle, which is measured using a two-way time-of-arrival (TOA) method. The mobile terminal implements a prototype GUI for alerting the user from an approaching vehicle. Field experiments have been conducted using real UWB-IR devices when the target vehicle is stationary and moving at a constant speed, to evaluate accuracy and precision of the proposed alert system. Experimental results show that the proposed system achieves 30 cm accuracy and 1 m precision while the vehicle runs at 30 km/h.
Keywords:
- Time of arrival
- Electric vehicle
- Hybrid vehicle
- Field experiment
- Impulse (physics)
- Ambient noise level
- Mobile radio
- Ultra-wideband
- Embedded system
- Engineering
- alert system
- constant speed
- Accuracy and precision
- Control engineering
- Transceiver
- impulse radio
- Real-time computing
- Measurement uncertainty
- Electronic engineering
- Correction
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- Cite
- Save
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