ABSTRACT

Development of the computer system of planning hydrophisical experiment

• INTRODUCTION

• 1. RELEVANCE

• 2. PURPOSE AND TASKS OF DESIGH AND RESEARCH

• 3. SCIENTIFIC NOVELTY

• 4. PRACTICAL SIGNIFICANCE OF RESULTS

• SUMMARY

• REFERENCES

The primary goal of oceanologic researches is studying of existential variability of set of parametres of the World ocean. Variability of fields of oceanographic characteristics in space is studied from the various probing and towed equipment established by the surface and underwater ships, sea bed vehicles. The remote measuring devices using various ranges of an electromagnetic spectrum, are established by planes and artificial companions of the Earth.

For definition of a condition and structure of the water environment it is necessary to know values of its parameters. The water environment is characterized by following sizes: temperature, pressure,conduction, salinity, density, speed.

The basic measured parameters are speed, temperature and conduction of water. The density and salinity can be received an analytical way.Their changes in space and in time generate many physiographic distinctions between separate parts of ocean. These variations generate layered structure of the water environment.

On degree of change of parameters of the water environment distinguish::

Laminar current — a current at which the liquid moves layers without hashing and pulsations (that is without chaotic fast changes of speed and pressure).

Turbulent flow —chaotic disorder pulsations of oceanologic characteristics (speed, pressure, density, temperature and salinity of water) concerning their some average value, caused by water whirls, various on duration and scales. Whirlwinds result from dynamic instability of the basic power bearing movement (waves, a current, convection), then collapse, transferring energy to smaller whirlwinds, etc. Up to molecular level. In horizontal distribution of turbulence also it is inherent intermittency — alternation of local sites with weak and with the intensive turbulence caused by overturning of superficial and internal waves. Large-scale turbulence at ocean is in a sense similar to vorticose movements in atmosphere of type of cyclones and anticyclones. It is shown in the form of almost horizontal whirlwinds.

For further study and exploration of the ocean, a person must receive regular information about its structure and condition, to identify any patterns. However, measurement of the parameters characterizing the state of the aquatic environment quite difficult and expensive operation. Therefore, one of the main objectives is to build the most efficient algorithms and methods for measuring parameters of the aquatic environment. Testing the effectiveness of the methods most convenient way for conducting a model of the area in which the place of measurement.

To measure the parameters of the aquatic environment is expected to use the probing system mounted on ships. They consist of:
- set measurement sensors;
- stepper motor is used for lowering the system at different depths;
- ADC ;
- controller that controls components of the system;
- database for storing the results.
Use of this probing system is a fairly expensive operation, so important is the selection of optimal system configurations for these conditions.

The purpose of my work is to create a computer system simulating the structure of the area, according to available data, and allows to solve the following tasks:
1) Selection of optimal configurations of the measuring device;
2) Find the optimal path of ship.

The parameters used to configure the measuring device:
1) The number of sensors;
2) The distance between the sensors;
3) Speed and discreteness of the engine;
4) The distance between the points of measurement.

The main problem to be solved for the implementation of this subsystem:
1) Developing a model changes the parameters of the aquatic environment
2) Develop a database to store the results of measurements required for planning experiments
3) Develop an object model for measuring the parameters of the aquatic environment
4) Implementation of algorithms for constructing optimal route of the measuring vessel, as well as the selection of the parameters of the measuring system.

The existing system of planning Hydrophysical experiment aimed at measuring the vertical direction.

Developed system simulates the measurement in the horizontal plane. In contrast to the vertical structure of the ocean, where the laminar layers are replaced by turbulent boundary layers of data in the horizontal plane have the infinitive form, which complicates the measurement. Therefore, the optimization of measurement in the horizontal is more complex and little understood task.

The results of the robot system being developed will build on the best routes of measurements, as well as choose the best parameters of the measuring system. This will help cover large areas during the expedition, and also to obtain better data.

At this stage, were designed object model of the measurement system of hydro options, as well as a database for storing the measurement results. The next step is to realize the selection of optimal route of the measuring system in a given area.

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