Systems and methods to determine electrochemical impedance spectrogram rapidly in real time
AssigneeArizona Board of Regents on behalf of Arizona State University
InventorJitendran Muthuswamy
Life of this patent
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Abstract
An electrochemical impedance spectrogram (EIS) measurement system includes a working electrode configured to provide a triangular excitation signal to a subject, and a counter electrode configured to measure an electrical parameter in response to the triangular excitation signal. Based on the triangular excitation signal and the measured electrical parameter, an EIS of the subject is obtained. A method for measuring an EIS of a subject includes causing a triangular excitation signal to be applied to a subject and obtaining electrical parameter measurements in response to the triangular excitation signal. The EIS of the subject is obtained based on the triangular excitation signal and the electrical parameter measurements.
Claims19
A method for measuring an electrochemical impedance spectrogram (EIS) in real time, the method comprising:
- causing, by a processing device, a triangular excitation signal to be applied to a subject;
- obtaining electrical parameter measurements in response to the triangular excitation signal;
- measuring, by the processing device, an EIS of the subject based on the electrical parameter measurements, wherein the EIS of the subject is based on a ratio of a voltage spectrogram and a current spectrogram;
- sampling the EIS of the subject at a plurality of frequencies that comprises multiple harmonics of a fundamental frequency of the triangular excitation signal;
- and
- causing, by the processing device, the EIS to be provided to a workstation.
An electrochemical impedance spectrogram (EIS) measurement system, comprising:
- a working electrode configured to provide a triangular excitation signal to a subject;
- a counter electrode configured to measure an electrical parameter in response to the triangular excitation signal;
- and
- a processing device configured to obtain an EIS of the subject based on the triangular excitation signal and the measured electrical parameter, wherein the EIS of the subject is based a ratio of a voltage spectrogram and a current spectrogram, and wherein the processing device is further configured to sample the EIS of the subject at a plurality of frequencies that comprises multiple harmonics of a fundamental frequency of the triangular excitation signal.
A non-transitory computer-readable medium which, when executed by a processing device, causes the processing device to:
- cause a triangular excitation signal to be applied to a subject;
- obtain electrical parameter measurements in response to the triangular excitation signal;
- measure an electrochemical impedance spectrogram (EIS) of the subject based on the electrical parameter measurements, wherein the EIS of the subject is based a ratio of a voltage spectrogram and a current spectrogram;
- sample the EIS of the subject at a plurality of frequencies that comprises multiple harmonics of a fundamental frequency of the triangular excitation signal;
- and
- cause the EIS to be provided to a workstation.
Dependencies are inferred from the claim text.