초록 ▼

Wood grain angle information is detected electronically by use of a sensor having a common electrode and a plurality of electrodes spaced from the common electrode and arranged angularly about a sensor axis. The common electrode can serve as a sense electrode or as a drive electrode for the remainin

Wood grain angle information is detected electronically by use of a sensor having a common electrode and a plurality of electrodes spaced from the common electrode and arranged angularly about a sensor axis. The common electrode can serve as a sense electrode or as a drive electrode for the remaining angularly spaced electrodes. By modulating applied drive signals and demodulating the sensed signals that result from capacitive coupling of an adjacent wood specimen, values that are a function of wood grain angle are identified.

대표청구항 ▼

A sensor for use in quantifying grain angle in wood, comprising: electrically conductive first and second electrode means for effecting capacitive coupling between them through an adjacent wood specimen to detect signals that are a function of grain angle in the wood specimen; the first electrode me

A sensor for use in quantifying grain angle in wood, comprising: electrically conductive first and second electrode means for effecting capacitive coupling between them through an adjacent wood specimen to detect signals that are a function of grain angle in the wood specimen; the first electrode means comprising an electrode operative surface having a sensor axis; and the second electrode means comprising a plurality of electrode operative surfaces angularly arranged about the sensor axis; the operative surfaces of the second electrode means being spaced apart from one another and from the operative surface of the first electrode means.