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Four electrode embedded bioimpedance measurement system

机译:四电极嵌入式生物阻抗测量系统

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摘要

A new extension of the AD5933 impedance measurement chip is presented. It allows to use the chip in the four electrode configuration to reduce the artifact effects of interface impedance between the electrode and the sample to be measured. The measurement approach is validated on various test circuits, and the system has been able to measure small physiological samples (50 ul) in a four microelectrode configuration and with a low sensitivity to interface impedances. The system is a good candidate for any embedded bioimpedance measurement system which requires a low sensitivity to interface impedances.
机译:提出了AD5933阻抗测量芯片的新扩展。它允许在四电极配置中使用芯片,以减少电极与待测样品之间的界面阻抗的伪影效应。该测量方法已在各种测试电路上得到验证,并且该系统已经能够以四个微电极配置测量低生理样品(50 ul),并且对界面阻抗的灵敏度较低。对于任何对接口阻抗要求低灵敏度的嵌入式生物阻抗测量系统,该系统都是不错的选择。

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