Design And Implementation Of Eomagnetic Field Information In Real-time Collection And Transmission System For Deep Ocean

Fluxgate magnetometer is a very high expertise and which has broad prospect. In numerous magnetic measurement technique, based on the magnetic finder flux-gate technology with its high resolution, wide measuring range and the economic and reliable, and makes it become one of the most important method of magnetic measurement technique. Flux-gate magnetometer can not only achieve absolute measuring magnetic field intensity, and it also can measure the magnetic field direction. Meanwhile, the fluxgate magnetometer has a better long term stability than the nuclear magnetic resonance magnetometer,easier sensor measured the signal and restrain thermal noise than fiber magnetometer.and is cheaper than superconducting quantum interference magnetometer.In particular, due to the popularity of computer and information technology, flux-gate magnetometer can be easier to implement digital, intelligent, miniaturized, created more application methods, acquired in areas such as unmanned drones, underwater robots, ship and automobile navigation, monitoring of submarines and torpedoes, oil well drilling bit verticality monitoring and correction, mining mineral reserves, grade and range of early detection, and the application of medical and health care equipment and so on.Through the study and research, this paper mainly do the following work:First, this paper summarizes flux-gate magnetometer measurement principle of the geomagnetic field, and introduces in detail three-component flux-gate magnetometer sensor measurement of the geomagnetic field in Marine geological investigation method.Second, according to the ocean environment.we designed a set of geomagnetic field collection and transmission system.we developed a deep-sea three-component geomagnetic field acquisition system by high accuracy three-component magnetic sensor which developed by research institute of China shipbuilding industry corporation710military.the three-channel AD coilector.and electronic compass.And we designed a set of information real-time transmission system for this acquisition system.Third, in system design details, we improved the measurement precision of the system by the three-component fluxgate magnetometer orthogonal correction and the angle error compensation.Finally, the measured data show that measurement is reliable and has good consistency by compared with the zhaoqing seismic station observation data.and verify the reliability and stability of real-time transmission system.The transmission system design scheme provides a new way of thinking for multiple sensor information real-time transmission system.It can be widely used in low-speed multisensor single channel data real-time transmission environment.