Design and Application of a Portable Bioelectrical Impedance Measurement System
Bioelectrical impedance analysis serves as a vital method for assessing body composition in clinical practice,it had significant clinical implications and practical value.However,current bioelectrical impedance measurement devices were plagued by high costs and heavy equipment.In response,we presented a portable bioelectrical impedance measurement sys-tem,which comprised with control circuits,current emission circuits,and impedance measurement circuits.By a microcon-troller(STC12C5A60S2),we effectively controlled miniature modules such as the direct digital synthesizer(AD9833)and phase detector(AD8302),it was achieved that the precise and stable measurements of human bioimpedance across various frequencies.Research results demonstrated that the proposed system,with significantly reduced design complexity and im-plementation costs,attained measurement precision akin to commercial bioimpedance.Thus,this system holded promise in offering novel approaches towards downsizing,portability,and cost-effectiveness in the development of bioimpedance meas-urement devices.
bioelectrical impedanceportable systemsmicrocontrollersdirect digital frequency synthesizersphase detectors
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