Design And Analysis Of DTMS System

As the pace of life is speeding up in modern society, the pressure people endure is increasing, the number of patients who suffer from mental disease caused by psychological issue increased year by year. Especially, depression has risen up to the second largest brain disease only to heart disease.Nowadays, the therapies for depression are mainly medical therapy, psychological therapy and physical therapy. The medical therapy is employed at most. However, as we know, a certain medicine only has effect on a certain part of patients and has bad side effects. Although psychological therapy doesn't have side effects; the treatment may take long time with unpredictable results. The physical therapies are acupuncture, electronic acupuncture and magnet therapy. Transcranial magnetic stimulation (TMS) which has positive effects on depression is widely used, and therefore it maybe the future of depression treatment.In this paper, an advanced method of transcranial magnetic stimulation is proposed by analyzing the existent therapies for the mental disease-deep transcranial magnetic stimulation. According to this method, the innovative central nerve magnetic stimulation system was designed combining with computer technology, electronic technology and control theory. The work and results can be summarized as follows:(1)A new therapy of transcranial magnetic stimulation-Deep transcranial magnetic stimulation (DTMS), applying transcranial magnetic simulation to all fields of brain, is proposed based on analyzing and employing the therapies for patients suffering depressions at home and abroad.(2)We designed a new bridge circuit as the control target to get waveform of the magnet field expected and a tunable DC source used by bridge circuit.(3)Max frequency of magnet field is up to 2000Hz with digital control, far exceeding the high frequency standard of TMS/rTMS(1Hz).(4)The treatment process is under monitoring and control by a HMI developed here. And the hardware is separated into independent functional modules based on the structure and module design technique. Then, an interface circuit was designed and a PC software was developed to gain information transmission between DSP and PC.