A photosensitive composite water entry detection device

Abstract

The invention provides a photosensitive composite water entry detection device comprises an infrared emitting diode, a photosensitive transistor, a base, an optical probe, an infrared unidirectional light transmitting film, a positive electrode, a negative electrode, a photosensitive detection circuit, a conductive detection circuit and a logic AND circuit, wherein, the photosensitive composite water entry detection device comprises an infrared emitting diode, a photosensitive transistor, a base, an optical probe, an infrared unidirectional light transmitting film, a positive electrode, a negative electrode, a photosensitive detection circuit and a logic AND circuit. A photosensitive composite water inlet detecting device, rapid detection, Simple circuit principle, Reliable function, at present, that practical application of the helicopt floating system is sol, The false triggering phenomenon of water entry detection under the natural environment such as freezing or man-made misoperation conditions, and the non-triggering phenomenon of water entry under the natural strong light environment, therefore, the invention has good reliability and strong pertinence, and can be widely popularized and applied in many fields of multi-type helicopters and offshore life-saving floating platforms, and has great practical value.

Description

technical field [0001] The invention relates to the field of sensors, in particular to a photosensitive composite water entry detection device. Background technique [0002] The photosensitive composite water entry detection device is used to judge whether the helicopter has fallen into the water from the air in the automatic mode, and gives the relevant switch signal, which is used as the input value of the airbag of the airborne flotation system to inflate and deploy the flotation system after the aircraft enters the water. The medium is air and water (including seawater, rivers and lakes). [0003] Water and air are very different in many parameters. According to the differences in these parameters, there are many methods to realize water entry detection, such as conductivity method, thermal conductivity method, buoyancy method, ultrasonic method, differential pressure method, capacitance method, and photosensitive method. However, due to the influence of the external en...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the influence of man-made, environmental pollution and natural environmental factors existing in the existing technical approaches, the present invention provides a photosensitive composite water entry detection device, which can effectively solve the problem of false triggers such as man-made or environmental pollution in the helicopter floating system water entry detection device , as well as false triggering under icing conditions and non-triggering issues when entering water under strong light conditions

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