| 摘要 |
FIELD: measurement equipment.SUBSTANCE: periodically light pulses are emitted by two light diodes with wave length ?=565 nm and two light guides with wave length ?=930 nm, and a photosensor receives pulses reflected from three plates. The first plate has an artificially applied maximum level of dustiness, the second one is in a tight body with artificially created maximum level of dust deposit with the limit threshold of moisture, and the third one is a reference plate. The photosensor first records the light pulses of two light diodes with wave length ?, then light pulses of two light diodes with wave length ?, arriving at the angle to the optical axis of radiation, comparing them by means of subtraction.EFFECT: invention provides for indication of higher level of dust deposit and disconnection of radio electronics equipment as the limit threshold of moist dust deposit is achieved.5 dwg |
