| 摘要 |
<p>Wood grain angle information is detected electronically by use of a sensor having a common electrode (25) and a plurality of electrodes (26) spaced from the common electrode and arranged angularly about a sensor axis (A). 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.</p> |
