Machine telegraph signal conditioning circuit for electric propulsive ship

Abstract

The invention relates to an electric propulsive ship technology, in particular to a machine telegraph signal conditioning circuit for an electric propulsive ship. The machine telegraph signal conditioning circuit comprises an acquisition circuit, a shaping circuit, an isolation circuit and an output voltage regulating circuit. A current signal of a machine telegraph forms a voltage signal on a resistor R1 and a capacitor C, the voltage signal is transmitted to the same-phase input end of an operational amplifier U1A, the output end of the operational amplifier U1A is connected with the reverse-phase input end of an operational amplifier U1B through a resistor R2 and a feedback receiving collector electrode pin of a linear photoelectric coupler U2, the output end of the operational amplifier U1B is connected with an input photodiode cathode of the linear photoelectric coupler U2, an output phototube collector electrode of the linear photoelectric coupler U2 is connected with the reverse-phase input end of an operational amplifier U3A, the output end of the operational amplifier U3A is connected with the same-phase input end of an operational amplifier U3B through a resistor R5 and a resistor R6, and a control chip is fed to the output end of the operational amplifier U3B after voltage stabilization. The machine telegraph signal conditioning circuit is suitable for an electric propulsive ship.

Description

technical field [0001] The invention relates to a car clock signal conversion circuit in a ship electric propulsion system, in particular to a car clock signal conditioning circuit for an electric propulsion ship. Background technique [0002] At present, the main propulsion system of traditional ships generally adopts the mechanical propulsion method of diesel engine + gearbox + propeller. It has obvious advantages in terms of economy, vibration and noise, ship manipulation, layout, safety and reliability. The car clock is a stepless speed regulation controller in the ship's electric propulsion system. The driver sends a gear position command (the car clock signal) in the cab, and the main control unit receives the car clock signal and drives the propulsion motor to perform forward, backward, traction, Braking, acceleration, deceleration, parking and other actions. Therefore, the accuracy and precision of the signal from the car clock to the main control unit are very imp...

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