科研之友
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摘要
In this paper, we propose a high precision, low power consumption bioelectrical impedance spectroscopy system prototype which provides programmable frequency sweep and tuning capability for impedance measurement from 10 Omega to 1 M Omega using Analog Devices AD5933 impedance measurement chip. Coefficients of variability (CVs) are applied to assess the stability of the system. The experiments show that the coefficient of variability (CV) of the system is less than 10% over a sweep frequency range from 1 kHz to 100 kHz. The bioelectrical impedance spectroscopy of a tomato stem is then investigated. The results show that this system is a useful tool to measure changes in the water content of plants.
- 出版日期2011-6
- 单位中国农业大学
