Mohamed Fezari

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An electronic travel aid is a form of assistive technology having the purpose of enhancing mobility for the blind. This paper describes the development of a microcontroller based navigation system for blind pedestrians. It is a portable, self contained portable electronic system that will allow visually impaired individuals to travel through familiar and(More)
The aim of this paper is to investigate the development of a navigation aid for blind and visually impaired people. It is based on a microcontroller with synthetic speech output. This aid is portable and gives information to the user about urban walking routes to point out what decisions to make. On the other hand, and in order to reduce navigation(More)
Many people with disabilities do not have the dexterity necessary to control a joystick on an electric wheelchair. Moreover, they have difficulty to avoid obstacles. The aim of this work is to implement a multi-modal system to control the movement of an Electric wheelchair using small vocabulary word recognition system and a set of sensors to detect and(More)
Users are able to operate a joystick to control the chair, however many more severely handicapped users need some other means of controlling the wheelchair. The aim of this work is to implement an interesting application using small vocabulary word recognition processor and some sensors on a smart system. The adopted model is based on grouping a(More)
In this paper, a voice command system for autonomous robots is proposed as a project. The methodology adopted is based on hybrid techniques used in speech recognition which are zero crossing and extremes with dynamic time warping followed by a decision system based on independent methods test results. To implement the approach on a real time application, a(More)
The multiprocessor system is composed of pipelining a DSP processor for speech enhancement, a new voice recognition module for isolated word recognition and a microcontroller for transforming the voice order into coded byte to be transmitted to the robots via wireless transmission module. The resulting design is used to control via master-slave protocol a(More)
The aim of this work is to implement an interesting application using small vocabulary word recognition processor and some smart sensors on a smart system. The adopted model is based on grouping a microcontroller and a DSP processor for speech enhancement with a new voice recognition module for isolated word and speaker dependent. The resulting design is(More)