Composite immersion switch

Abstract

The invention discloses a composite immersion switch. The composite immersion switch comprises a casing, wherein a hole is formed in the bottom of the casing; a guide slot in the vertical direction is formed in the casing; a valve is arranged at the bottom of the guide slot; an electrode base is arranged at the upper part of the guide slot; two electrodes are mounted on the electrode base; a spring is connected between the electrode base and the valve; the casing, the valve and the electrode base are assembled into a whole body, so as to form a relatively sealed containing cavity; a detection circuit is connected between the two electrodes; the detection circuit outputs an exciting signal after the breakover of the two electrodes. The composite immersion switch can ensure that the switch is timely opened after immersion, can also prevent the interference and corrosion of vibration, airflow and hygrothermal environment, and is high in reliability.

Description

Technical field [0001] The invention relates to a switch, in particular to a composite immersion switch combining mechanics and electronics, which is mainly used in the field of airborne emergency rescue and can also be applied to other products and technical fields that need to be started or stopped when immersed in water. [0002] Background technique [0003] The current immersion detection switch devices are mainly divided into two categories: mechanical and electronic. [0004] Mechanical immersion switches generally use water-soluble structures or pressure switches such as floats and springs to detect immersion and trigger the next action. The disadvantage of this type of structure is that it is more susceptible to the influence of complicated environments such as damp heat, vibration, etc., has low reliability, and is large in size and difficult to integrate with the control circuit. [0005] Electronic immersion switches generally use a set of electrodes to detect changes i...

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the problems of existing simple electronic and mechanical submersible switches in complex environments, such as low reliability and maintenance, or large volume and inconvenient installation, a small, electromechanical composite submersible switch is provided. It has the advantages of small size, good sealing, good resistance to complex natural and mechanical environments, low malfunction rate, high reliability, and long life.

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