Moisture-detection device
First Claim
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1. A device for determining moisture, said device including an LC-oscillating circuit as a transducer (1);
- an oscillator (2) for exciting the oscillating circuit (1);
a tuning device (3) for frequency-wise tuning the oscillator (2); and
a measuring and evaluation circuit (4) for recording the moisture condition of the oscillator (2) and for providing a signal that is proportional to a degree of moisture at the transducer (1);
wherein the transducer (1) and the oscillator (2) are coupled by a contact-free energy coupling.
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Abstract
A device for determining moisture has an LC-oscillating circuit (1) as a transducer and an oscillator (2) for exciting the oscillating circuit (1). Further, the device for determining moisture has a tuning device (3) for frequency-wise tuning the oscillator (2) and a measuring and evaluation circuit (4) to determine an attenuation condition of the oscillator (2) and to provide a signal that is proportional to a degree of moisture at the transducer (1). The transducer (1) and the oscillator (2) are coupled in a contact-free manner.
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Citations
19 Claims
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1. A device for determining moisture, said device including an LC-oscillating circuit as a transducer (1);
- an oscillator (2) for exciting the oscillating circuit (1);
a tuning device (3) for frequency-wise tuning the oscillator (2); and
a measuring and evaluation circuit (4) for recording the moisture condition of the oscillator (2) and for providing a signal that is proportional to a degree of moisture at the transducer (1);
wherein the transducer (1) and the oscillator (2) are coupled by a contact-free energy coupling. - View Dependent Claims (4, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
- an oscillator (2) for exciting the oscillating circuit (1);
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2. A device for determining moisture, said device including:
- an LC-oscillating circuit as a transducer (1);
an oscillator (2) for exciting the oscillating circuit (1);
a tuning device (3) for frequency-wise tuning the oscillator (2); and
a measuring and evaluation circuit (4) for recording the moisture condition of the oscillator (2) and for providing a signal that is proportional to a degree of moisture at the transducer (1);
wherein the transducer (1) is formed of a single conductive lead. - View Dependent Claims (3, 5, 19)
- an LC-oscillating circuit as a transducer (1);
Specification