Hydroacoustic antennas. Robimo simple hydroacoustic antenna from smitty Construction of an acoustic antenna of a submersible density meter

As a result of the choice, the reason for installing the antennas is to lay down a level of noise, which will support a corian signal, the efficiency of the corian signal, the maximum glybin, as it is practically possible to simulate a bath during the day itself.

The main dzherels of hydroacoustic transitions, which are injected onto antennas, є ship machines and mechanisms, ridges of gvinti, turbulent pogrom of a hydraulic ball, as well as іnshі hydroacoustic systems, which immediately judge. Kozhen s dzherel pereskod opening the noise of the singing spectrum, which is sent to the antenna, widening without the middle along the hull of the ship, near the water and the hull of the ship, being seen from the objects in the middle of the sea anyway. A special inflow into the robot, the antennas nadayut bulbs of twist, rosіyanі in the sphere of water, which wash the antenna. It was repeatedly mentioned in practice, when the ship was in the ballast, since there was little intensive fixation of bulbs in the bottom area, and it stopped moving to see the apparently not-great glibinas. With a decrease in performance, the vessel was moved, or the robot was moved. This phenomenon can be explained by the fact that the bulbs whitening from one side are intensively developing and chasing energy, from the latter - changing the physical power of the middle, without an average dotty from the antenna-us, lowering the system Wednesday, reducing the efficiency of converting the electrical signal to mechanical and back.

In order to change the factors flowing into it, you will get the antennas on the robot, and then they will not stand up in the missions, which will lead to the offensive vimogs:

Changing the hydrodynamic grip in the installation of the antenna when changing the speed of the vessel is guilty of being minimal;
The place where the antenna is installed is rostasovatysya yaknaydalі from the machine sidings, ridge guints, power steering attachments, as well as primitives, in which roztashanі it is very noisy machines and mechanisms;
In the area of ​​distribution of antennas (in the mains up to 3-5 m), it is innocent of the water intake and longitudinal annexes, so as there can be a decrease in the number of gaps, or if the display of chills, especially low-frequency ones, can be increased;
In the immediate vicinity of the antenna, especially right up to the bow of the ship, it is innocent of the ship's structures and annexes, which can seize the robot's cholot;
On the way to the reception and reception of the signal, in between 60 ° out of the vertical, it is innocent of the parts, which can lead to the visualization of acoustic signals;
The place of installation of the antenna can be used as far as possible from the other hydro-acoustic systems, which are visible on the vessel;
It is recommended that you secure manual access to the antenna for looking around, carrying out preventive robots and replacing.
For the purpose of setting up the antennas for the best possible installation of antennas with the least acoustic noise, it is necessary to estimate the level of noise in the front of the antenna.
When vibrating the misalignment of the antenna of the ship, it is necessary to adjust the direction of the wrapping of the ship's gwent. So, with the vicorian gwent of the right crocus in the lion, a part of the stern contours of the ship will lead to drunkenness and water. As a result of the sheathing change, you can become the head rank in the left part of the bottom of the ship. Vibratsiya to the hull of the ship wiklikє additional acoustic pereshkodi. At the connection from the cim during the rowing gwint of the right croc, it is recommended to install the antenna of the eholota on the starboard side, and in the case of the rowing gwint of the left croc - on the left side.

The results of the freezing of noises at different points in the hull of the witnesses about those who have the least noise, as a rule, are spared in the bow of the ship. It is recommended to install the antenna of an echolot closer to the bow of the vessel (in the area of ​​a positive vise) in order to avoid unacceptable damage during hitavits. It is recommended to mount the antenna as close as possible to the diameter area of ​​the vessel.

It is possible to change the changeover into the overflow code for the additional installation of special screens.

Mounting of the attachments in the set of the chipper will be supported according to the technical documentation for the operation and the speed of the robot with the attachment.

The area of ​​the surface of the ocean becomes close to 71% of the Earth's surface. Great yogo part before tsikh pyr is not vivchen.

The need to keep up with the light ocean in the minds of all the growing needs of people for a cheap fire and the need to control the civilian navigation has led to the emergence of hydroacoustic sensor systems, which are able to develop the identity of the water on the sea

Today, before such systems, there are high performances, so that the optimal parameters are not ensured, and the performance of optical water growers in the capacity of transmitting and sensitive elements of building in the meaning of the world of improving the efficiency of the vitality of the robotics system depends on

The main factors for replacing traditional hydroacoustic sensors on p'zoelectric re-conversions are fewer parts, higher efficiency, lower weight and size parameters, simplicity of preparing a raised sensor and a low frequency of sensitive frequencies,

The development is carried out with the help of an active guided laser. The ship's dzherelo vipromynyu shirokosmugove acoustically viprominuvannya. Dilianki of the bottom with a growing area, like for example the Naftogaz genus and an extravagant soil, will be shown acoustically vyprominuvannya with small spectral storage facilities. Outboard fiber-optic antenna for restructuring signals. Onboard possession of data obtained from antennas, i, in the presence of small recordings of a corian signal, in the form of a direction to the sound of an object.

The principle of a robotic acousto-optic cable, a sensitive element of a bright є optical fiber, is based on the effect of the indicator of fiber breakage, and also the phase of an optical vipromyuvannya before the acoustic field. Calculated phase change, you can get information about acoustic injection.

There are no simple optical circuits and the design of sensitive elements, but all the stench allows multiplexing a large number of sensors on a single fiber, which can be displaced in acousto-optic cables. This way of multiplexing a large number of sensors on Danish moment Can only protect optical fibers.

Robots on the theme of the given project were resumed in 2011, they were carried out with a special purpose at the Central Scientific Research Center "Electroprilad" Concern. preparatory robots, Buli introduced the basic concept of the stem of acousto-optic cables, viprobuvan development methods signal processing In 2014-2016, a number of models of passive acousto-optic cables and electronic blocks for signal processing have been implemented.

For the purpose of dynamical range, sensitivity, level of power noise and other parameters, a number of viprobing of the skin antenna was carried out. Viprobuvannya included additional antennas in the muffled chambers (acousto-optic cable for loosening on tripods near the acoustic field) and on open water (acousto-optic cable winding on the sound transmission of the viprobubal cat, in the center of the acoustic field) Below are the photographs of the viprobauvan events.

The development and advancement of extended hydroacoustic fiber-optic antennas is a young direct science in Russia, as there are great prospects in the field of hydroacoustic fiber-optic antennas.

The winners are carried to the area of ​​construction of hydroacoustic equipment, the growth of resonant high-performance hydroacoustic antennas, which can be used in the range of upper sound and ultrasonic frequencies. The technical result is shown as a result of the registration of the polyagus in the field of direct antenna powers, frequency characteristics and safety of the extended frequencies of the smog. For tsogo in gіdroakustichnoї antenna scho mіstit strizhnevі p'єzoelektrichnі peretvoryuvachі sealingly rozmіschenі in zagalnomu korpusі, Ilya Obolonkov zhorstku on frontalnіy poverhnі antennas of yakoї z'єdnanі strizhnevі peretvoryuvachі, elektroіzolyatsіyny zapovnyuvach i єdiny threshing metalevy Screen, Ilya Obolonkov zhorstka vikonana at viglyadі perednoї Chastain to the case, open the cylindrical shape, in some form of the cut-out of the cut-out, on the leather to the front and on the front lining of the cylindrical form, with the whole skin overlay along the ring-shaped contour through the mechanical cut-out of the inner-liner, hermetically sealed mіzh a hard shell with til pads and a metal screen. To expand the working emptying of the antenna at the front pads, rewire in the cylindrical openings, open the cylindrical emptyings, which can be fitted with the old one or the weather elements at the bells of one or more decorative 5 p.p. f-li, 1 mule.

FORMULA FOR WINE

1. Gіdroakustichna antenna, yak mіstit strizhnevі p'єzoelektrichnі peretvoryuvachі sealingly rozmіschenі in zagalnomu korpusі, Ilya Obolonkov zhorstku on frontalnіy poverhnі antennas of yakoї z'єdnanі strizhnevі p'єzoelektrichnі peretvoryuvachі, elektroіzolyatsіyny zapovnyuvach i єdiny threshing metalevy Screen scho vіdrіznyaєtsya tim scho a thin sheath of the Viconan at the front of the front part of the body, a small cylindrical opening, in which shears are cut out, and the skin of the skin should be inserted into the front and the skin of the skin of the cylindrical form the inner surface of the shaped cylindrical opening, and the electrically insulating gap between the hard sheath with the strong overlays of the shear p'zoelectric reworking and the metal screen. 2. The hydroacoustic antenna according to claim 1, when the front pads of the shear-shaped p'zoelectric converts to the cylindrical openings, open the cylindrical empty ones. 3. The hydroacoustic antenna according to claim 2, when the cylindrical lights at the front pads of the shear-shaped p'zoelectric re-converting the rings are displayed. 4. The hydroacoustic antenna according to claim 2, where it is displayed, is shown in the cylindrical light frames at the front pads of the shear p''zoelectric reversing the weather elements in the view of one of the springs. 5. The hydroacoustic antenna according to claim 1, when the metal screen of the vikoniy is displayed at the view of the stylish part of the body. 6. The hydroacoustic antenna according to claim 1, when it is seen, when the end surfaces of the shear pads are mounted on the inner surface of the hard shell, when

і їх technical characteristics

Appointment of hydroacoustic antennas

hydroacoustic antennas designations for vipprominuvannya or reception of hydroacoustic signals with additional assistance hydroacoustic re-transformations and for the preservation of spacious vibration.

hydroacoustic rework

hydroacoustic rework is technical adjustment, I will re-create electrical equipment in mechanical, abo, navpaki, mechanical equipment in electrical.

There are two main classes of hydroacoustic conversions:

a) magnetostriction;

b) p'єzoelectric.

Principle of magnetostrictive transformation

Magnetostrictive transformations have the manifestation of magnetostriction. apparition magnetostriction polyaga in that, in some feromagnetic materials under the inflow of the magnetic field, deformation occurs, as it is characterized by a change in the development of an image during the expansion of the magnetic forces of the lines. Tsei efect be called direct magnetostrictive effect.

Whenever the strength of the magnetic field increases, the core grows stronger, then Magnetostriction is called positive, and if the strength of the core changes, then Magnetostriction is called negative.

The graph of the abundance of the aliquot of feromagnetic materials from the strength of the magnetic field is shown in Fig. 5.

permaloy

cobalt

– nickel

Small. 5. Graph of accumulation of uniform deformation in relation to the stress of the field

The nature of the deformation steps is due to the material of the eye, the method of processing, the magnitude of the forward magnetization and temperature. 3 materials presented in Fig. 5, permalloy is positively magnetostrictive, nickel is negative, and cobalt is a low magnetostriction sign, which can be found in the strength of the magnetic field.

The deformation of the be-like eye is interconnected by the boundary, which is called magnetostrictive insects... The magnitude of the deformation of the force and the stress of the magnetic field, at such an insistence, is deposited in the material. For example, the magnitude of the magitostriktsionnogo saturation in nickel is significantly higher, less in cobalt, and the magnitude of nikel infusion at a lower field strength, less than in cobalt.

A great inflow on the power of magnetostrictive materials is due to the thermal processing. I have come across any material to produce up to an increase in the magnitude of the magnetostriction.

Due to temperature adjustments, the magnetostrictive effect is weak and even more significant.

From the molecular-kinetic point of view, the phenomenon of magnetostriction is explained by the offensive rank:

The crystallographic axis of small one-sided crystals of feromagnetic material can create a happy atmosphere in the open space. However, about the crystals are united in such a name domains... Magnetic moments of the cutaneous domain may be unmistakable. For example, in nikel magnetic moments of domains are arranged in eight straights - along the cube diagonals. Directly call straightforwardly magnetizing... As soon as there is no magnetization, then the magnetic moments of the domains are irresistible, and the total magnetic moment is predominantly zero.

Before the inflow of a new magnetic field, a reorientation of the magnetic domains is brought about. Smells are located in quiet straits, as they zbigayut right out of the ringing field. At the same time, the deformation of the crystal lattice is observed, which leads to a change in the size of the crystal.

The order of the direct magnetostrictive effect is zorotic magnetostrictive effect, The essence of a yak polyag in the change of a magnetic field is clear from a flow of mechanical stress. During mechanical action on the feromagnetic material, the crystal lattice deforms, as a result of which the magnetic moments of the domains change in relation to the return to the higher magnetic field.

Magnetostriction є a boyfriend. This means that when the polarity of the magnetic field changes, the deformation sign does not change. In such a rank, as through the salt, in the middle of which there is a shear, pass the winter electric strum Then the shearing will be effective periodically at a frequency, equal to the subwoofer frequency of the wakeful electromagnetic field. The values ​​of the effect can be worn down, as soon as the magnetization is re-magnetized. In the case of converting sound hydroacoustic adjusters, the magnetization works by the way of installing permanent magnets or the introduction of a special jerel post-strum.

The characteristics of the robotics of the magnetostrictive reworking machine without magnetic sensing is shown in Fig. 6, and for pidmagnychuvannyam - in Fig. 7.

-H + H

Small. 6. Characteristics of the robot

magnetostrictive reworking without magnetic resonance

Small. 7. Characteristics of the robot

magnetostrictive conversion

For the improvement of the efficiency of the revision, the frequency of the new generation is to blame, but the frequency is equal to the frequency of the first generation. The frequency of the power springs of the rod is deposited in the form of material and material, in the form of preparation.

The frequency of the rod should start with the formula:

de n - harmonica number (ring n= 1);

l - dovzhina haircut, cm;

E - spring module for material, n / m 2 ;

ρ - power, kg / m 3 .

Constructions of magnetostrictive conversions

Whether the magnetostrictive rework is a core made of magnetostrictive material, on which the winding is mounted from a nasty honey dart with a water-resistant insulating material. The core is assembled from thin stamped plates. After stamping, the plates are annealed. The ball is oxide, which is set on the surface of the plates when blown, є a good insulator. Isolation between the plates of the junction when vortex streams appear in the core, and in this way change the energy consumption for the core heating.

In the shirts of the most extended, sheared magnetostricts permeated. Plates, from which to type up sheared, re-shaped, can be rectangular in shape with protrusions. The plates are assembled into a package, which is a closure of the magnetic wires, and a winding is placed on the shears. For the installation of permanent magnets, for the additional help of which there is a permanent increase in the magnitude of the transformation, in order to transfer later slots. The design of the shearing magnetostrictive re-molding machine is shown in Fig. eight.

The winners are carried to the area of ​​construction of hydroacoustic equipment, the growth of resonant high-performance hydroacoustic antennas, which can be used in the range of upper sound and ultrasonic frequencies. The technical result is shown as a result of the registration of the polyagus in the field of direct antenna powers, frequency characteristics and safety of the extended frequencies of the smog. For tsogo in gіdroakustichnoї antenna scho mіstit strizhnevі p'єzoelektrichnі peretvoryuvachі sealingly rozmіschenі in zagalnomu korpusі, Ilya Obolonkov zhorstku on frontalnіy poverhnі antennas of yakoї z'єdnanі strizhnevі peretvoryuvachі, elektroіzolyatsіyny zapovnyuvach i єdiny threshing metalevy Screen, Ilya Obolonkov zhorstka vikonana at viglyadі perednoї Chastain to the case, open the cylindrical shape, in some form of the cut-out of the cut-out, on the leather to the front and on the front lining of the cylindrical form, with the whole skin overlay along the ring-shaped contour through the mechanical cut-out of the inner-liner, hermetically sealed mіzh a hard shell with til pads and a metal screen. To expand the working emptying of the antenna at the front pads, rewire in the cylindrical openings, open the cylindrical emptyings, which can be fitted with the old one or the weather elements at the bells of one or more decorative 5 p.p. f-li, 1 mule.