公开(公告)号：US20150293045A1

公开(公告)日：2015-10-15

申请号：US14683338

申请日：2015-04-10

Applicant: Texas Instruments Incorporated

Inventor： Anand Hariraj Udupa ,  Jagannathan Venkataraman ,  Hussam Ahmed ,  Sandeep Kesrimal Oswal

IPC: G01N27/04

CPC classification number: A61B5/6898 ,  A61B5/053 ,  A61B5/0535 ,  A61B5/0537 ,  A61B5/7221 ,  A61B2560/0468

Abstract: The disclosure provides a circuit for impedance measurement. The circuit includes an excitation source coupled between a first set of input switches. An impedance network is coupled between the first set of input switches and a first set of output switches. The impedance network includes a body impedance and a plurality of electrode impedances. A sense circuit is coupled to the first set of output switches. The sense circuit measures the body impedance and at least one electrode impedance of the plurality of electrode impedances.

Abstract translation: 本公开提供了用于阻抗测量的电路。 电路包括耦合在第一组输入开关之间的激励源。 阻抗网络耦合在第一组输入开关和第一组输出开关之间。 阻抗网络包括身体阻抗和多个电极阻抗。 感测电路耦合到第一组输出开关。 感测电路测量身体阻抗和多个电极阻抗中的至少一个电极阻抗。