| 摘要 |
The invention relates to the photoelectronic tachometers, provided for contactless control of rotations of the rotatable machine parts. The device contains an infra-red source, a reflecting stripe applied onto the surface of the rotatable machine part, a detector of infra-red rays, modulated by the reflecting stripes and a device for processing and display of measurement results. The tachometer is additionally provided with a programme process, a clock pulse generator, a clock-pulse frequency divider and a matching element.Claims: 1Fig.: 1 |
