公开(公告)号：US20180196101A1

公开(公告)日：2018-07-12

申请号：US15433862

申请日：2017-02-15

Applicant: Analog Devices Global

Inventor： Guangyang Qu ,  Yincai Tony Liu ,  Baotian Hao ,  Hanqing Wang ,  Hengfang Mei ,  Rengui Luo ,  Yimiao Zhao ,  Junbiao Ding

IPC: G01R31/28 ,  G01N27/416 ,  G01N27/12 ,  G01N33/00

CPC classification number: G01R31/2829 ,  G01N27/122 ,  G01N27/4163 ,  G01N33/0057 ,  G01R27/02 ,  G01R27/16 ,  G01R35/005

Abstract: An apparatus comprises a load resistance connectable in series with the electronic sensor to form a series resistance of the load resistance and the internal impedance of the electronic sensor; an excitation circuit configured to apply a predetermined voltage to a circuit element; and a measurement circuit configured to: initiate applying the predetermined voltage to the series resistance and determining the series resistance; initiate applying the predetermined voltage to the load resistance and determining the load resistance; and calculate the internal impedance of the sensor using the determined series resistance and the load resistance, and provide the calculated internal impedance to a user or process.

公开(公告)号：US10466296B2

公开(公告)日：2019-11-05

申请号：US15433862

申请日：2017-02-15

Applicant: Analog Devices Global

Inventor： Guangyang Qu ,  Yincai Tony Liu ,  Baotian Hao ,  Hanqing Wang ,  Hengfang Mei ,  Rengui Luo ,  Yimiao Zhao ,  Junbiao Ding

IPC: G01R31/28 ,  G01N27/416 ,  G01N33/00 ,  G01R35/00 ,  G01R27/02 ,  G01R27/16 ,  G01N27/12

Abstract: An apparatus comprises a load resistance connectable in series with the electronic sensor to form a series resistance of the load resistance and the internal impedance of the electronic sensor; an excitation circuit configured to apply a predetermined voltage to a circuit element; and a measurement circuit configured to: initiate applying the predetermined voltage to the series resistance and determining the series resistance; initiate applying the predetermined voltage to the load resistance and determining the load resistance; and calculate the internal impedance of the sensor using the determined series resistance and the load resistance, and provide the calculated internal impedance to a user or process.

公开(公告)号：US20180353100A1

公开(公告)日：2018-12-13

申请号：US15616807

申请日：2017-06-07

Applicant: Analog Devices Global

Inventor： Liam Riordan ,  José Carlos Conchell Añó ,  Tony Shi ,  Guangyang Qu ,  Hanqing Wang

IPC: A61B5/053 ,  A61B5/00 ,  A61B5/16

CPC classification number: A61B5/0531 ,  A61B5/01 ,  A61B5/0533 ,  A61B5/7225 ,  A61B5/7257 ,  A61B2560/0247

Abstract: Various examples are directed to a measurement system for measuring an electrical property of skin comprising an excitation circuit, a receiver circuit, and a sequencer circuit. The excitation circuit may generate a periodic excitation signal that, when provided to the skin, generates a response signal in the skin indicative of the electrical property. The sequencer circuit may be configured to activate the excitation circuit to provide the excitation signal to the skin. While the excitation circuit is activated to provide the excitation signal to the skin, the sequencer circuit may activate the receiver circuit to execute a first sample cycle to generate a first plurality of samples of the response signal. A first value for the electrical property of the skin may be determined based at least in part on the first plurality of samples of the response signal.