Icing sensor based on optical fiber

Abstract

The invention discloses an icing sensor based on an optical fiber. The icing sensor includes a light source, a sensing optical fiber and a reference optical fiber are stacked in front of the light source, and a shading plate is arranged in front of the reference optical fiber; the rear end of the sensing optical fiber and the rear end of the reference optical fiber are connected with a sensing optical fiber photoelectric converter and a reference optical fiber photoelectric converter respectively, and the sensing optical fiber photoelectric converter and the reference optical fiber photoelectric converter are both connected with the signal processing module. The icing sensor can effectively simplify the data processing complexity, improve the measurement precision, guarantee the stealth and aerodynamic performances of an airplane, is simple in manufacturing, and is high in reliability.

Description

technical field [0001] The invention belongs to the technical field of aircraft anti-icing and relates to an optical fiber-based icing sensor. Background technique [0002] The icing sensor is a special detection device used to detect whether there is ice on the surface of the aircraft when the aircraft is flying under icing weather conditions. Icing sensing technology has been successfully applied in many fields. At present, most of the icing detection technologies are designed based on the principles of flat film and resonance. , Most of the probes protrude from the skin surface of the body by more than 60mm. The use of the above-mentioned sensors has the following disadvantages: the above-mentioned probes are easy to affect the measurement accuracy due to temperature changes, and in order to eliminate the influence of temperature on the measurement accuracy, it is necessary to perform relatively complicated calculations for precision compensation, and the calculation com...

AI Technical Summary

Problems solved by technology

The use of the above-mentioned sensors has the following disadvantages: the above-mentioned probes are easy to affect the measurement accuracy due to temperature changes, and in order to eliminate the influence of temperature on the measurement accuracy, it is necessary to perform relatively complicated calculations for precision compensation, and the calculation complexity is high; in addition, because the probes are too Protruding from the skin surface of the airframe destroys the stealth performance and aerodynamic performance of the aircraft. The above sensors have gradually failed to meet the requirements of the new generation of aircraft design

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