Design Of Point To Multi-Point Wireless Medical Stimulator System

The electrical stimulation refers to various physiological reactions produced by electric current or voltage of a given frequency when put on the exciting tissues of the organism. Because of the moderate control over the intensity of the electric stimulation, the tissue won't be damaged even if being repeatedly stimulated. Therefore, the electrical stimulation has been widely applied to medical and physiological research.In view of the disadvantages of poor movability and point-to-point treatment of traditional medical instrument of electricity stimulation, the author brought forward a scheme of employing low power and short distance wireless communication technol- ogy to design a system which is composed of RF transceiver , microcontroller and a few related chips. Meanwhile, Making use of the trait of RF transceiver having 125 RF channels, the author designed many stimulating modules which can work simul- taneously.The hardware of this system is completed with the RF transceiver chip NRF2401, micro-controller SST89V554RC and C8051F330. The system is composed of data wireless transmission, host module, stimulate module and PC controlling module. The thesis expounded in detail the circuit design of RF model, host monitor model, stimulate model, etc. In the software development, the thesis designed a PC monitoring program which could treat many patients with different electrical stimulation, monitor the process and record the treatment history. Finally, the author carries on the preliminary debugging to the system.It is indicated by practice that the system is characterized by low cost, small shape, easy to move, multipoint treatment and convenient monitoring.