Intelligent high-precision oceanic geomagnetic field monitoring network system

The invention discloses an intelligent high-precision oceanic geomagnetic field monitoring network system which comprises a power supply, a power supply control part, a computer system, a photoelectric composite cable, an adapter-coupling observation system mainframe, an external battery and a probe system. The power supply control part provides high-voltage direct current and achieves long-distance transmission, electrification is controlled by adopting an intelligent power supply time-sharing controller, the adapter-coupling observation system mainframe adopts a high-capacity battery for power supply, the whole photoelectric composite cable is not electrified and has no direct-current voltage when a magnetometer normally monitors and acquires data under the control of the intelligent power supply time-sharing controller and accordingly does not produce a disturbing magnetic field, and only when the magnetometer stops magnetic field acquisition or the electric quantity of the batteryis insufficient, the inte