| 摘要 |
<p>Strand break detector for monitoring a number of straightened strands (15) extending along a number of predetermined paths, with regard to a broken or missing strand. The strand break detector comprises an optical transmitter (19) with light-percepting means (20) arranged to supply, at relative motion between strands and transmitter transversely of the strands, a signal for each passing strand. A shield (21) is arranged as a spacer in front of the light-percepting means and forms an inlet for light to the light-percepting means and a slide surface (22A, 22B) for guiding the strands past the light inlet, the strands bulging in engagement with the slide surface, at relative movement between the strands and the transmitter. The shield is arranged as a spacer between the light-percepting means and the strands. The strand break detector also includes an electronic circuit for receiving and processing the signal from the transmitter.</p> |
