Research And Application Of The Effects In The Of Low-frequency Current The Human Body

The effect of current passing through the human body is still a marginal subject involving the fields of physics, medicine and so far there has been no special book for the research and illustration of this subject.In this thesis, the writer, from such different angles as physics and medicine, makes a detailed analysis on the mechanics of electric conduction in the human body under the effect of low-frequency current (the frequency being 0-1000 Hz, mainly of direct current and industrial frequency current). Special analysis is made on formation and working factors of the skin-impedance and internal impedance which make up human body's impedance, and based on this, a circuit model of the impedance is established when the direct current and industrial-frequency current are passing through the human body. With the careful analysis made on the effects of current passing through the human body impacted by the two currents, the writer discovers the patterns between the different volume of current and its effect when the two currents are passing through the human body. The curve line is drawn about the different human body effects of the two currents and the patterns are concluded on the effects happened when the two currents are respectively passing through the human body.In addition, based on the effects of current passing through the human body, some aspects concerning the safe application of direct current and industrial-frequency current are further analyzed and suggestions are made on the safe use of electricity. Tentative analysis is also made on the application of human body's current effect to the fields of medical check and treatment and the prospect is put forward of applying direct current and industrial-frequency current to the medical field.