Woo E J, Hua P, Webster J G, Tompkins W J, Pallás-Areny R
Department of Biomedical Engineering, College of Medicine, Kon Kuk University, Choongbuk, Republic of Korea.
Med Biol Eng Comput. 1992 Jan;30(1):97-102. doi: 10.1007/BF02446200.
We have studied the effect of the electrode configuration on the measurement of body impedance and found that the electrode configuration greatly affects the impedance measurement using the four-electrode method. We studied the characteristics of the compound electrode and found that the compound electrode provides the four-electrode method in a compact form. A new method of measuring the skin impedance using simple electrodes at low frequencies was developed. At high frequencies where the effect of internal tissue impedance is not negligible, we used the compensation method using compound electrodes, because they measure the voltage right under the skin. At 50 kHz, we measured the real part of the skin impedance of less than 80 omega on the thorax. We propose a simple instrument which can measure accurate skin impedance at various frequencies.
我们研究了电极配置对人体阻抗测量的影响，发现电极配置对使用四电极法的阻抗测量有很大影响。我们研究了复合电极的特性，发现复合电极以紧凑的形式提供了四电极法。开发了一种在低频下使用简单电极测量皮肤阻抗的新方法。在内部组织阻抗的影响不可忽略的高频情况下，我们使用复合电极的补偿方法，因为它们测量的是皮肤正下方的电压。在50kHz时，我们测量了胸部皮肤阻抗的实部小于80欧姆。我们提出了一种可以在各种频率下测量准确皮肤阻抗的简单仪器。
