Impedance spectroscopy based systems and methods
First Claim
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1. A system for controlling a process involving a specimen, the system comprising:
- a first electrode covered by a cover layer of insulating material and adapted to receive a modulated electrical voltage for generating an electric field in the specimen;
a measuring circuit for measuring at least one parameter depending on a response of the specimen to the field;
a data processor section connected to the measuring circuit and operative to determine a concentration of a substance in the specimen from the parameter and to out-put data in response to the determined concentration; and
a control circuit connected to the data processor section and operative to receive data from the data processor section and to control an aspect of the process based at least in part on the data from the data processor.
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Abstract
One aspect of the invention provides a device that non-invasively determines the concentration of a substance in a target. The device includes a first electrode, a measuring circuit, and a data processor. In one embodiment of the device, the first electrode can be electrically insulated from the target, e.g., a cover layer of insulating material covers the first electrode.
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Citations
31 Claims
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1. A system for controlling a process involving a specimen, the system comprising:
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a first electrode covered by a cover layer of insulating material and adapted to receive a modulated electrical voltage for generating an electric field in the specimen;
a measuring circuit for measuring at least one parameter depending on a response of the specimen to the field;
a data processor section connected to the measuring circuit and operative to determine a concentration of a substance in the specimen from the parameter and to out-put data in response to the determined concentration; and
a control circuit connected to the data processor section and operative to receive data from the data processor section and to control an aspect of the process based at least in part on the data from the data processor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for managing a process involving a specimen, the method comprising:
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arranging a first electrode at the specimen, wherein the first electrode is electrically insulated from the specimen;
receiving a modulated electrical voltage signal at the first electrode to generate a modulated field in the specimen;
measuring at least one parameter depending on a response of the specimen to the field;
determining a concentration of a substance in the specimen based at least in part on the measured parameter; and
controlling an aspect of the process based at least in part on the determined concentration. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A method for obtaining an indication of a condition of a specimen, the method comprising:
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arranging a first electrode at the specimen, wherein the first electrode is electrically insulated from the specimen;
receiving a modulated electrical voltage signal at the first electrode to generate a modulated field in the specimen;
measuring at least one parameter depending on a response of the specimen to the field;
determining an impedance of the specimen based at least in part on the measured parameter; and
determining whether an indication of a condition exists based at least in part on the impedence of the specimen. - View Dependent Claims (30, 31)
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Specification