Patent ID: 11965847
Assignee: NXP B.V.
Field: Measurement (Instruments)
Classification: CPC G  A | IPC G

Claim 18:
19. A health monitoring system comprising:
a controller;
a radio frequency system to send measurement results;
an electrochemical sensor having electrodes;
an electrode driver stage coupled to the electrodes of the electrochemical sensor; and
measurement channels coupled to the electrode driver stage to receive an electrode signal from the electrodes of the electrochemical sensor and to generate the measurement results,
wherein the controller is coupled to the measurement channels to switch configurations of the measurement channels to perform different measurements;
wherein the electrodes of the electrochemical sensor comprise a work electrode and reference electrode,
wherein the electrode driver stage comprises a work electrode buffer to drive the work electrode and a reference electrode buffer to drive the reference electrode, and
wherein the controller sets a voltage at the work electrode buffer and a voltage to the reference electrode buffer with a voltage difference to configure a first measurement channel of the measurement channels in different sink/source output current modes.