Multi-frequency capacitive measurement device and a method...

Details Multi-frequency capacitive measurement device and a method... Multi-frequency capacitive measurement device and a method...

2007-04-17

2007-04-17

Hirshfeld, Andrew H. (Department: 2858)

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

C324S658000, C324S663000

Reexamination Certificate

active

11228065

ABSTRACT:
A method and a system is provided that includes a multifrequency generator supplying signals of at least three different frequencies to an electrode assembly, the capacitance of which is detected for a plurality of different frequency points. In this way, the capacitance of the electrode assembly, which is influenced by a substance present in the vicinity of the electrode assembly, may be reliably identified. Preferably, the conditions of a road surface may be reliably monitored.

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