VHDL miniaturization of an electric rehabilitator with dynamic control

Electronic systems are becoming more compact thanks to technological development. Integrated technology provides electronic systems that are more and more thumbnails, economical and robust for different operating conditions. Biomedical technology and especially the electrical stimulator are also concerned by the embedded technology to provide a portable, inexpensive and most flexible and efficient in terms of accuracy and speed. In this work, we present a new VHDL modeling of an electrical rehabilitator from an original design. First, we propose an integrated architecture to reduce the electrical stimulator. We will discuss the operational units and their main functions. Then we present a reduced interface well suited to the portability of the device. The reduced system contains tow global blocks of analog and numerical treatment. This last one constitutes the main of this study and it consists of six blocks to generate stimulus signal and the command signal. The interface adopts two types of manual and automatic amplitude control in order to control the stimulation signal, and allows the setting of the stimulation training.