Assessment of human arm bioelectrical impedance using microcontroller based system..

In a wide field of research, the devices available based on long-established methods for measurement of bioelectrical impedance are large in size, expensive and low inaccuracy. In this research, a system is developed for the measurement of the segmental bioelectrical impedance of the human body with high accuracy and small of a size. The system also consists real time measurement with cloud interference, which makes it helpful for the subjects who want to check your measurements quickly or online. The developed method uses multi-frequency to measure segmental bioelectrical impedance that follows four electrodes segmental measurement techniques and is equipped as an impedance analyzer and a touch screen. Multi-frequency signals flow to the human body to measure bioelectrical impedance and also compare data measured by the developed device with the standard device. Data have been collected through the developed device and is analyzed. The outcomes show that the relative error of measured amplitude at multi-frequency is less than 1.50% while the absolute error of phase is up to 10. A comparison between the two devices shows that the accuracy parameter of the developed device is more than 98 %. A compatible correlation (~ 0.9993) can be seen between both devices that they measure a nearly equal impedance of left and right arm at the same frequency. The use of the developed device for the measurement of segmental bioelectrical impedance using multi-frequency adequately enhances all traits of measurement as state-of-the-art facilities, small size and liberated to use due to simplicity with the advancement of online measurements analysis