Device for measuring underwater noise of watercraft and system for checking operating state thereof

FIELD: physics, acoustics.

SUBSTANCE: invention relates to hydroacoustics and can be used to monitor the noise emission level of an underwater object in a natural water body. The method includes raising a measurement module from watercraft, said measurement module being fitted with hydrophones and used to measure the noise emission level of the watercraft. The measurement module is fitted with a system for checking the operating state thereof without dismantling the device.

EFFECT: enabling measurement of the noise level of underwater watercraft directly from the watercraft.

13 cl, 3 dwg

 

The invention relates to hydroacoustics and can be used for operational monitoring of noise emissions of an underwater object in the natural reservoir.

A device similar purposes, comprising a housing made in the form of a Cup with a hinge mounted at the top of the suspension, the equipment carrier and lowering and lifting device. Inside and on the surface of the equipment carrier mounted sonar transducers /RF Patent for the invention №2300479, CL. VV 22/06, WV 22/04, WV 22/00, 2007/.

The disadvantage of this device is the stationary character of its setting in the natural reservoir and the lack of system in the device to check its operating status.

A known system for checking the operating status of the device for measurement of underwater noise boats, consisting of a generator of mechanical vibrations, which are fixed on the piezoelectric hydrophone. The system allows to check the efficiency of the device at its regular place /RF Patent for the invention №2172272, CL. VV 22/00, 2001/.

The disadvantage of the system is a long time to check the health of the device at different frequencies of the test signal.

A device for measurement of underwater noise boats, containing mounted in the housing of the measuring module and a winch, kinematics�and connected with the measuring module with flexible cable and a control unit, wherein the measurement module is made in the form smokeproducing instrument carrier streamlined buoyancy with located inside the broadband hydrophone sensor and hydrostatic pressure, and the winch is in the form of a vertical coil with a winding mechanism and etching a flexible cable, and a measuring unit, winch and control unit in the initial position are studied aboard boats /Patent for invention of the Russian Federation No. 2172272, CL. VV 22/00, 2001/.

Known technical solution can be implemented with the same set of features is not only above water, but underwater boats.

This unit is taken as a prototype of the proposed device. The disadvantage of the prototype is the stationary nature of the installation of the device in natural water body.

Known system to check the health of hydroacoustic devices at its regular place, adopted as a prototype containing the outboard portion and the control, processing and display of information, connected by a flexible cable, wherein the outboard portion is formed in the form pesocostanzo element, linear amplifier and an electric equivalent, connected via a controllable switch to the entrance of the complex treatment, the complexes justices�message processing and displaying information located on Board the vessel /the Patent for invention of the Russian Federation No. 2450479, CL H04R 1/44, 2012/.

The disadvantage of the prototype system is the need for temperature measurements of the electrical equivalent, made in the form of the resistor.

The technical result obtained by the implementation of the device for measurement of underwater noise boats, is to obtain multiple measurements of the noise level of the submarine boats directly from the boats.

The technical result obtained from the implementation of the system to verify the operating status of the device for measurement of underwater noise, is the possibility to test the functionality of the device directly with the underwater boats without the need for temperature measurements of the electrical equivalent of the hydrophone.

This technical result is achieved due to the fact that the device for measuring the noise of the underwater boats, containing mounted in the housing of the measuring module and a winch, kinematically connected with the measuring module via a flexible cable, and a control unit, wherein the measurement module is made in the form smokeproducing instrument carrier streamlined buoyancy with arranged inside the broadband hydrophone sensor and hydrostatic pressure, and the winch is in the form of a vertical coil� with the winding mechanism and etching a flexible cable, moreover, the measurement module, winch and control unit located onboard the investigated vessels is further provided with a cradle measuring module installed in the upper housing, and clamps measuring module, made in the form of levers-grips mounted on the shaft of the controlled motor.

The measuring module is provided with an additional low-frequency hydrophone module switching.

The measurement module is made in the form of a truncated cone.

The device further comprises a unit shock sensor module.

Block shock absorbers measurement module is made in the form of a plate disposed thereon an elastic plastic rings.

The device further comprises a position sensor measuring module.

Position sensor measuring module is made in the form of reed pairs, a movable magnet which is installed in the appropriate place flexible cable.

The device comprises a second hydrostatic pressure sensor, mounted in the housing.

In parts of the system to verify the operating status of the device to measure noise underwater boats containing the outboard portion and the control, processing and display of information, connected by a flexible cable, wherein the outboard portion is formed in the form pesacov�twitterlogo element, linear amplifier and an electric equivalent, connected via a controllable switch to the input of the information processing system, wherein the control, processing and displaying information located on Board the vessel, the electrical equivalent, in the form of two generators white noise, the spectral density of the output signals which differ by a specified amount.

The system further comprises a second piezochemistry element, connected via a controllable switch to the entrance of the complex processing.

Complex information processing comprises a series-connected controllable filters high and low frequencies with controls connected to the control system.

the information processing system further comprises an amplifier with adjustable gain and a control connected to the control system.

The control system further comprises a splitter output signal with galvanic isolation for several consumers, a controlled input of which is connected to the output of the control.

The invention is illustrated by drawings.

Fig. 1 is a diagram of the device in assembled condition on Board the vessel;

Fig. 2 - scheme of the measuring module of the equipment carrier;

Fig. 3 is an electric circuit system to check the health of the device from the Board the boats.

The device comprises (Fig. 1) mounted in the housing 1 of the measuring module 2 (2), the winch is in the form of a vertical coil 3, kinematically associated with THEM 2 by a flexible cable 4 through the mechanism of the winding 5 and the etching of the flexible cable 4.

THEM 2 (Fig. 2) made in the form smokeproducing media 6 positive buoyancy with located inside broadband 7 and 8 low frequency hydrophones and the sensor 9 of hydrostatic pressure.

The carrier 6 is made in the form of a truncated cone and contains the latches in the form of levers grips 10 mounted on the shaft controlled electric motor 11 (Fig. 1).

There are also tool insert 12 THEM 2 mounted in the upper part of the housing 1, the shock absorbers THEY 2 made in the form of a plate disposed thereon with plastic rings (not shown), and a position sensor to THEM 2 made in the form of reed pairs, a movable magnet which is fixed on the flexible cable 4 (position sensor not shown).

The housing 1 has a second sensor 13 of the hydrostatic pressure and the motor 14 of the winch with gear (not digitized), and the switching module 15 for connection to the measuring circuit by a command from the control unit of the corresponding element to THEM 2. Diagram of the system for checking the operating status of the device for measuring the underwater noise pleausre�STV shown in Fig. 3.

The system contains the outboard portion 16 and side complexes 17, 18, 19 management, processing and displaying information connected by a flexible cable, located on the watercraft (Fig. 3). Symbols 18, 19 conditional, because some elements of the complex 19 display includes a set of 18 processing.

In the outboard portion 16 includes two generators 20, 21 white noise (GS 20 and GS 21), the spectral density of the output signals which differ by a specified amount.

In airborne 18 processing information includes a filter 22 high frequencies (high-pass filter 22, the filter 23 low frequencies (low-pass filter 23, the amplifier 24 with adjustable gain (KU 24) and matching amplifiers 25, 26, 27 galvanic isolation.

In outboard and side parts of the apparatus are also two switches 28, 29 driven away 17 management.

Complex control contains 17 blocks 30, 31 control the cutoff frequency of the HPF 22 and the LPF 23 and the block 32 of the control coefficient KIamplifier 24.

Frequency (FsliceHPF 22 via the block 30 can be set (Fslice=5 Hz; 10 Hz; 20 Hz; 40 Hz.

Frequency (Fslicewith the help of block 31 controls the low-pass filter 23 can be set (Fslice=12.5 kHz and 100 kHz.

The coefficient KIthe amplifier 24 can be set via the block 32 controlI=-10 dB, 0 dB, 20 dB, 30 dB, 40 dB.

In addition, using blocks 30, 1 control HPF 22 and the LPF 23 may disconnect.

HPF 22, the LPF 23 and KI24 are connected in series. All serial chain input connected to the output of the linear amplifier 33 outboard parts 16 of the system, and output - parallel connected three matching amplifiers 25, 26, 27 galvanic isolation.

Managed switches 28, 29 are connected controllable inputs with complex unit 34 17 control.

Outputs matching amplifiers 25, 26, 27 galvanic isolation via a controllable switch 29 is connected to a personal computer 35 (PC 35) or another display unit.

The device for measurement of underwater noise watercrafts and system for bendamustine check its working condition are as follows.

After his regular work of the watercraft stops. The operator directs the control unit to the controlled motor command signal 11, under the action of which the electric motor 11 attaches to the sides of the clamps THEY 2 made in the form of levers-grips 10 and the carrier 6 under the action of positive buoyancy begins to emerge.

Simultaneously with the control unit to the electric motor 14 of the winch module 15 via the switching command signal is fed to bleed flexible cable 4 with the coil.

The height of the carrier 6 of the watercraft is determined from the difference in hydrostatic pressure, measure�x sensors 9 and 13. Upon reaching the desired elevation position sensor 2 (not shown) issues a signal to stop operation of the motors 11, 14 and the carrier 6 of the instrument hangs at a predetermined distance above the investigated watercraft.

Measurements of the intrinsic noise of the boats first, by using, for example, low-frequency hydrophone 8, and then using a broadband hydrophone 7.

Before the beginning and the end of all metrological work verifies the operability of the measuring device.

For this managed switch 28 is disconnected from the measuring path hydrophones 7, 8, and alternately connects GS 20 and GS 21 at specified settings high-pass filter 22, the LPF 23, andI24 and the switch 29.

PC 35 calculates the ratio of the output signals at consecutive connection hydrophone tract 20 and GSH GSH 21. If the ratio of the output signals is equal to the ratio of the input signal, then check the measuring device is considered healthy.

At the end of metrological works include the work of the motor 14 and begins to work the mechanism 5 of the bobbin 3 flexible cable 4. When the position sensor flexible cable 4 will show the location of the carrier 6 at its regular place, on a cradle 12 boats trigger levers-grips 10 by the motor 1.

Thus with the help of this device it is possible to measure hydroacoustic noise of the boats directly from the boats, and with the help of this system possible bendamustine checking the operating status of the device.

This achieves the stated technical result.

1. The device for measurement of underwater noise boats, containing mounted in the housing of the measuring module and a winch, kinematically connected with the measuring module via a flexible cable, and a control unit, wherein the measurement module is made in the form smokeproducing instrument carrier streamlined buoyancy with arranged inside the broadband hydrophone sensor and hydrostatic pressure, and the winch is in the form of a vertical coil with a winding mechanism and etching a flexible cable, and a measuring unit, winch and control unit located onboard the studied vessels, characterized in that it further provided with a cradle measuring module, installed in the upper part of the housing and clamps the measuring unit is made in the form of levers grips mounted on the shaft of the controlled motor.

2. The device according to claim 1, characterized in that the measuring module is provided with an additional nishchal�the back in some hydrophone module switching.

3. The device according to claim 1, characterized in that the measuring module is made in the form of a truncated cone.

4. The device according to claim 1, characterized in that it further comprises a unit shock sensor module.

5. The device according to claim 4, characterized in that the block absorbers measurement module is made in the form of a plate disposed thereon an elastic plastic rings.

6. The device according to claim 1, characterized in that it further comprises a position sensor measuring module.

7. The device according to claim 6, characterized in that the position sensor measuring module is made in the form of reed pairs, a movable magnet which is installed in the appropriate place flexible cable.

8. The device according to claim 1, characterized in that the device comprises a second hydrostatic pressure sensor, mounted in the housing.

9. System to check the working condition of the device for measurement of underwater noise underwater boats containing the outboard portion and the control, processing and display of information, connected by a flexible cable, wherein the outboard portion is formed in the form pesocostanzo element, linear amplifier and an electric equivalent, connected via a controllable switch to the input of the information processing system, control complexes, processing � display information located on Board the vessel, characterized in that the electrical equivalent in the form of two generators white noise, the spectral density of the output signals which differ by a specified amount.

10. A system according to claim 9, characterized in that it further comprises a second piezochemistry element, connected via a controllable switch to the entrance of the complex processing.

11. A system according to claim 9, characterized in that the information processing system comprises a series-connected controllable filters high and low frequencies with controls connected to the control system.

12. A system according to claim 9, characterized in that the processing system further comprises an amplifier with adjustable gain and a control connected to the control system.

13. A system according to claim 9, characterized in that the control system further comprises a controllable splitter output signal with galvanic isolation for several consumers, a controlled input of which is connected to the output of the control.



 

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1 dwg

FIELD: the invention refers to the field of marine navigation particularly to the mode of using a navigational hydro acoustic system for determination of locations of autonomous underwater vehicles relatively to a plot on the seabed, for example, at fulfillment of scientific, searching and other underwater works.

SUBSTANCE: mode of using by underwater vehicles of a navigational hydro acoustic system is in simultaneous determination of the locations of all underwater vehicles of the group at inquiry by a hydro acoustic signal-command of one of the underwater vehicles of the group of (leading) responder beacons by one of the (driven) responder beacons. The location of each of underwater vehicles is determined by differences of distances to the leading responder beacon and to the drive responder beacon defined by measured intervals of time between reception of an acoustic signal of the request of the responder beacons by the leading responder beacon and acoustic signals of the response of the driven responder beacons. The location of the underwater vehicle is found as an intersection plot of hyperboloid of revolution whose number corresponds to the number of pairs of "leading-driven" responder beacons and focal points are located in installation plots of the corresponding responder beacons and the flatness passing through the center of the hydro acoustic antenna of the underwater vehicle transversely to the flatness of the true horizon.

EFFECT: increases the term of work of the navigational hydro acoustic system with three or more seabed responder -beacons at group operations of autonomous underwater vehicles.

1 dwg

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