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Three-level distributed analysis method based on inductive coupling temperature-salinity-depth sensor chain transmission channel

A technology of inductive coupling and transmission channel, which is applied in the field of three-level distributed analysis based on inductive coupling temperature-salt deep-chain transmission channel, can solve the problem of low transmission rate, improve coupling efficiency, reduce model calculation amount, and improve signal-to-noise the effect of

Inactive Publication Date: 2018-03-06
TIANJIN POLYTECHNIC UNIV
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  • Description
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Problems solved by technology

But its transmission rate is not high, only up to 4.8Kbps

Method used

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  • Three-level distributed analysis method based on inductive coupling temperature-salinity-depth sensor chain transmission channel
  • Three-level distributed analysis method based on inductive coupling temperature-salinity-depth sensor chain transmission channel
  • Three-level distributed analysis method based on inductive coupling temperature-salinity-depth sensor chain transmission channel

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Experimental program
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Embodiment 1

[0022] Step 1: Analyze the influence of magnetic ring parameters on channel characteristics

[0023] By establishing a model of the coupling channel of the water magnetic ring, and analyzing the influence of the shape, air gap, permeability and other parameters of the magnetic ring on the inductance according to the established COMSOL model, the application of the toroidal magnetic ring with high magnetic permeability is determined , Reducing the air gap between the magnetic rings helps to improve the coupling efficiency of the magnetic rings. Finally, the magnitude of the induced voltage induced on the steel cable is calculated to be 0.047V.

[0024] Step 2: Estimate the size of the water resistance and the current value of the single-turn closed loop

[0025] By establishing a channel model composed of steel cables and sea water bodies, the induced electromotive force calculated in the first step is applied as an excitation to the steel cables, and the current density distribution...

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Abstract

The invention discloses a three-level distributed analysis method based on an inductive coupling temperature-salinity-depth sensor chain transmission channel. The inductive coupling temperature-salinity-depth sensor chain transmission channel is taken as a prototype, and channel transmission characteristics of an inductive coupling temperature-salinity-depth sensor chain are evaluated relatively accurately through adoption of the three-level distributed analysis method. A magnetic coupling model of an overwater magnetic ring, a steel cable and water body and a magnetic induction model of the steel cable, the water body and an underwater magnetic ring are established according to the channel characteristic of the inductive coupling temperature-salinity-depth sensor chain. Values of magneticring inductive reactance and water body impedance in a marine environment are calculated through adoption of COMSOL Multiphysics software. Through establishment of a complete circuit model, the transmission characteristics of a transmission signal in the channel are analyzed as the investigation depth is increased. According to a result, through simulation analysis of a transmission channel model, the current distribution in the water body is mainly concentrated in a circular region in a certain range by taking the steel cable as a center, as the length of the steel cable is increased, the length of the water body is increased, a signal is attenuated to 2.9%; and as an inductance value is changed, the signal is attenuated to 1.5%; and as the load quantity is changed, the signal is attenuated to under 2.6%. According to a conclusion, the signal transmission performance is greatly influenced by the increase of the water resistance, the underwater magnetic ring inductive reactance and the load quantity, a water body resistor impedance value is reduced, and the stable inductance value change has very important effect on the improvement of the channel transmission performance of the inductive coupling temperature-salinity-depth sensor chain.

Description

Technical field [0001] The present invention uses the transmission channel of the inductively coupled thermohaline deep chain as a prototype, and proposes to use a three-level distributed analysis method to study the channel characteristics of the inductively coupled marine communication system, and provides a new method for the research of inductively coupled transmission channels, which is useful for improving the The transmission rate and reliability of the channel signal are of great significance. Background technique [0002] Inductive coupling transmission communication technology, as one of the important technologies for ocean surveying, uses the principle of electromagnetic induction to realize non-contact underwater signal transmission. It has the characteristics of simple structure, low cost and long transmission distance, and the sensor can be deployed to a deep Of the sea. The use of non-contact electromagnetic induction for data transmission is an effective, economi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/391H04B17/30
CPCH04B17/30H04B17/391
Inventor 郑羽秦潇丛张赛薛静靳翔羽王晓瑞
Owner TIANJIN POLYTECHNIC UNIV
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