METHODS AND SYSTEMS FOR DETECTING THE HYDRATION OF SENSORS
First Claim
1. A sensor system, comprising:
- a sensor, the sensor including a plurality of electrodes; and
a sensor electronics device that is coupled to the sensor and includes;
an AC source coupled to a first electrode of the plurality of electrodes to supply an AC signal to said first electrode;
an impedance measuring device to measure an impedance within the sensor and to transmit a hydration signal if the impedance is below a threshold impedance;
an electrical detection circuit that receives the hydration signal and generates an interrupt; and
a microcontroller that receives the interrupt from the electrical detection circuit and transmits a signal representative of a voltage that is to be applied to a second electrode of the plurality of electrodes.
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Accused Products
Abstract
A sensor system includes a sensor and a sensor electronics device. The sensor includes a plurality of electrodes. The sensor electronics device includes a connection detection device, a power source, and a delay circuit. The connection detection device determines if the sensor electronics device is connected to the sensor and transmits a connection signal. The delay circuit receives the connection signal, waits a preset hydration time, and couples the regulated voltage from the power source to an electrode in the sensor after the preset hydration time has elapsed. Alternatively, the sensor electronics device may include an electrical detection circuit and a microcontroller. The electrical detection circuit determines if the plurality of electrodes are hydrated and generates an interrupt if the electrodes are hydrated. A microcontroller receives the interrupt and transmits a signal representative of a voltage to an electrode of the plurality of electrodes.
113 Citations
6 Claims
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1. A sensor system, comprising:
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a sensor, the sensor including a plurality of electrodes; and a sensor electronics device that is coupled to the sensor and includes; an AC source coupled to a first electrode of the plurality of electrodes to supply an AC signal to said first electrode; an impedance measuring device to measure an impedance within the sensor and to transmit a hydration signal if the impedance is below a threshold impedance; an electrical detection circuit that receives the hydration signal and generates an interrupt; and a microcontroller that receives the interrupt from the electrical detection circuit and transmits a signal representative of a voltage that is to be applied to a second electrode of the plurality of electrodes. - View Dependent Claims (2, 3)
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4. A sensor system, comprising:
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a sensor, the sensor including a plurality of electrodes; and a sensor electronics device that is coupled to the sensor and includes; a DC source coupled to a first electrode of the plurality of electrodes to supply a DC signal to said first electrode; a resistance measuring device to measure a resistance within the sensor and to transmit a hydration signal if the resistance is below a threshold resistance; an electrical detection circuit that receives the hydration signal and generates an interrupt; and a microcontroller that receives the interrupt from the electrical detection circuit and transmits a signal representative of a voltage that is to be applied to a second electrode of the plurality of electrodes. - View Dependent Claims (5, 6)
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Specification