Document Type : Original Article
Department of Mathematics and Computer Science, Amirkabir University of Technology (Tehran Polytechnic)
Department of Computer Science, Amirkabir University of Technology, Tehran, Iran
Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran
Department of Computer Science, Amirkabir University of Technology, Tehran, Iran.
We propose a new warning system based on smartphones that evaluates the risk of motor vehicle for vulnerable pedestrian (VP). The acoustic sensors are embedded in roadside to receive vehicles sounds and they are classified into heavy vehicle, light vehicle with low speed, light vehicle with high speed, and no vehicle classes. For this aim, we extract new features by Mel-frequency Cepstrum Coefficients (MFCC) and Linear Predictive Coefficients (LPC) algorithms. We use different classification algorithms and show that MLP neural network achieves at least 96.77% in accuracy criterion. To install this system, directional microphones are embedded on roadside and the risk is classified there. Then, for every microphone, a danger area is defined and the warning alarms have been sent to every VPs’ smartphones covered in this danger area.