Wading electrode detection circuit for seawater leakage of ship-borne equipment

Abstract

The invention discloses a wading electrode detection circuit for ship-borne equipment seawater leakage, which comprises an MOS tube driving circuit, an inversion circuit and a rectification circuit, and is characterized in that a control signal of a single-chip microcomputer is accessed to the MOS tube driving circuit, the MOS tube driving circuit drives MOS tubes in the inversion circuit, and according to a preset program of the single-chip microcomputer, the conduction time of different MOS tubes is controlled, so that the wading electrode detection circuit can detect the seawater leakage of the ship-borne equipment. Positive and negative square waves generated by an inverter circuit are applied to an anode and a cathode of a wading electrode, then the positive and negative square waves are converted into a single-direction direct current signal by a rectifying circuit, and a feedback signal of an optocoupler is accessed to a single-chip microcomputer to detect whether wading exists or not. Modularized production can be carried out, and large-scale application and popularization are facilitated; according to the wading electrode detection circuit, wading electrode detection can be achieved only through one MOS tube driving circuit, one rectifying circuit and one inverter circuit, the number of needed devices is small, the circuit is simple, the size is small, and reliability is high.

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