KR19990024191U - Signal transmission module operation inspection device of sonar - Google Patents

Abstract

The present invention relates to a device for checking the normal operation of the signal transmission module constituting the sound wave detector, and more particularly to a device for diagnosing the signal transmission status, transmission signal and cable connection state of each sound channel of the sound wave detector It is about.

The device of the present invention compares the output signal for each transmission channel and the reference signal of the signal transmission module, thereby providing an effect of simply determining whether there is an abnormality in the cable connection state and an operation state for each channel of each module.

The device of the present invention is also capable of simulating all modules before or after the insertion point, which also provides the effect of identifying abnormalities in front and rear of the connection point of the signal transmission module.

Description

Signal transmission module operation inspection device of sound wave detector

The present invention relates to a device for checking the normal operation of the signal transmission module constituting the sound wave detector, and more particularly to a device for diagnosing the signal transmission status, transmission signal and cable connection state of each sound channel of the sound wave detector It is about.

In general, in the sound detector for detecting an acoustic signal in the water to detect the exact position of the sound source, the method of detecting the sound wave in the water is an active sonar that emits sound energy and receives the reflected sound energy from the object. There is a (Sonar) method and a passive sonar method that receives only acoustic energy radiated from other sound sources.

1 is a block circuit diagram schematically showing a general sound wave detector. The sound detector system includes: an acoustic sensor unit 10 for detecting an underwater sound signal, converting it into an electrical analog signal, converting the sound signal into a digital signal, and multiplexing and transmitting the same; A towing cable 30 for connecting the acoustic sensor unit 10 to the ship 40; It is configured to include a ship (40) connected to the acoustic sensor unit 10 by the towing cable (30).

In addition, the ship 40 is classified into a data receiver 42 for processing a mux signal transmitted from the acoustic sensor unit 10, and the electrical signal data received from the data receiver 42, the sound by It is composed of a data processor 44 for restoring a signal, and comprises a control signal and a power supply 46 for controlling and supplying power to the acoustic sensor unit 10.

Figure 2 is a schematic diagram showing the appearance of the acoustic sensor unit of the sound wave detector to which the present invention is applied.

The acoustic sensor unit includes a tail rope assembly 51, a non-acoustic module 52, an acoustic module 53, a signal transmission module 54, a vibration blocking module 55, and a towing cable 30.

The acoustic sensor unit arranges the hydrophones at regular intervals in the polyurethane tube and uses them by grouping them several times according to the frequency band used, and must be able to withstand the strong tensile force due to towing in the water, and maintain the neutral buoyancy and occur when towing It should be possible to suppress the noise.

The external hose of the acoustic module uses a polyurethane hose that is internally made of Kevlar, and has a support structure having a tensile strength member inside to withstand the tensile force generated during towing.

The tail rope assembly 51 and the vibration blocking module 55 attenuate vibration generated at the periphery of the acoustic sensor unit and vibration at the time of towing, thereby preventing false signal capture.

3 is a diagram illustrating the connection of the towing cable 30 and the data receiving device 42 in the ship 40.

The towing cable 30 is wound or unwound through the winch 35, and the towing length is adjusted. The slip ring 36 is installed on the rotation shaft of the winch 35. One end of the towing cable 30 is connected to the stator of the slip ring 36. On the other hand, one end of another connecting cable 32 is connected to the rotor of the slip ring 36. Therefore, even if the length of the towing cable 30 changes as the winch 35 rotates, a signal may be transmitted through the slip ring 36, and the transmission signal is input to the data receiving device 40.

Sound generated in the water is propagated to the surroundings by the mechanical tight action of seawater particles. The acoustic vibration reaches the hydrophone 12 in a magnitude proportional to the product of the square of the frequency and the amplitude, causing the volume change, and the hydrophone 12 responds to the volume change in response to an electric wave that is homogeneous with the sound wave. Generates the corresponding electrical signal. The electrical signal is input to the mux unit 16 via a differential amplifier 14 for noise reduction.

The signal input to the mux unit 16 is sequentially multiplexed, and then digitally signaled through a sampling and quantization process, and then transmitted to the ship 40 through a towing cable 30 through a vibration isolation module (not shown). . In this case, the transmission signal may be expressed in the form of a change in current or a change in voltage. However, since the towing cable 30 is a long distance of several kilometers, it is generally converted into a current form and transmitted.

In the hydroacoustic detection system of the above type, various modules such as a signal transmission module and an acoustic module operate by receiving power from a ship.

400V DC power is supplied from the ship, and each module has a built-in DC-DC converter. The converter generates various voltages (eg, ± 15V DC, + 5V DC, etc.) necessary for the operation of the module. It is supplied to various electronic circuits in the module.

In the event of an abnormality or failure of the power supply device of the various array modules, the ships must be inspected from the ship to the various modules one by one. Therefore, it is necessary to check the normal operation of several hundreds of modules one by one, which is difficult in time and place. There is a problem.

The present invention has been made to solve the above problems, an object of the present invention is to provide a test device having a function for diagnosing the abnormality of the signal transmission module and the cable connection state constituting the sound detector. Its purpose is to.

1 is a block circuit diagram schematically showing a circuit configuration of a general sound wave detector;

2 is a configuration diagram schematically showing the appearance of the acoustic sensor unit of the sound wave detector that is the inspection target of the present invention device;

3 is a configuration diagram showing the connection of the towing cable of the sound wave detector and the ship,

Figure 4 is a block diagram showing the configuration of a signal transmission module operation test apparatus configured in accordance with the present invention.

※ Explanation of code about main part of drawing ※

10; Acoustic sensor units 30 and 32; Towing cable

35; Winch 36; Slip ring

40; Shipboard 42; Data receiver

51; Tail rope assembly 52; Non-acoustic Module

53; Acoustic module 54; Signal transmission module

55; Vibration isolation module 60; Broadband Amplifier

70; Broadband amplifier power connector 100; Inspection device

121; Data receiving amplifier 122; Decoder

123; Demux 200; Test signal generator

In order to achieve the above object, the present invention provides a sound module for converting sound generated from a sound source underwater into an electrical signal, and an auxiliary signal transmitter for converting an analog signal from the sound module into a digital signal and multiplexing the same. A signal transmission module configured to include; A vibration blocking module for attenuating the vibration generated around the acoustic sensor unit and the towing vibration to prevent false signals from being captured; In the line array tow type acoustic wave detector including a non-acoustic module for transmitting water depth, temperature and azimuth information on the ship, comparing the output signal and the reference signal for each transmission channel to determine whether there is an abnormality of the transmission channel. Test signal generator; An inspection device for inputting a reference signal to the signal transmission module and supplying operation power; A power amplifier for connecting power to the broadband amplifier and the broadband amplifier for receiving the signal transmitted from the signal transmission module; And, it comprises a winch connector for supplying the operating power to the signal transmission module, and provides an operation test device for diagnosing the operation abnormality of the signal transmission module (TDM) and the presence or absence of each channel abnormality. .

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

4 is a view illustrating a configuration in which the signal transmission module, the power module, and the vibration blocking module of the sound wave detector constructed in accordance with the present invention are combined with the present device.

The test equipment of the present invention has the function of diagnosing the abnormality of the whole sensor part and the abnormality of each module. For this purpose, the system inspection, signal transmission module inspection, power module inspection, vibration blocking module inspection, acoustic module inspection and inspection Equipment self-test is performed.

The internal control of the tester and the result display for performing each functional test can be implemented using a personal computer.

The system inspection by this invention is demonstrated.

When the fully assembled acoustic sensor unit (HDTM, AM, TDM, VIM) and the towing cable 30 are connected, the cable of the inspection equipment 100 is connected to the ship cable connection end 36 of the winch, and the test signal generator From 200, a test signal, for example 500 Hz, is applied to the test signal terminal at the rear of the non-acoustic module (HDTM). After that, the output signal of the all sound channel is extracted from the inspection equipment, and the abnormality of all sound channels is diagnosed by comparing with the test signal.

It also has the ability to monitor auxiliary sensor channels and other auxiliary channels. This auxiliary channel monitoring is a test for the power supply, automatic gain control unit, and auxiliary sensor. According to such a system inspection, it is possible to determine whether the entire sensor unit operates normally.

The inspection of the signal transmission module will be described.

Connect the signal transmission module (TDM), power module (PWM), vibration blocking module (VIM), towing cable 30, winch 35, and the inspection equipment 100 to the ship cable connection end 36 of the winch Connect. The power is supplied through the power supply unit of the test equipment 100 to operate the signal transmission module (TDM), and a reference signal is applied from the test signal generator 200 to the signal transmission module input terminal. Thereafter, the test equipment 100 compares the output signals of all transmission channels allocated to the acoustic channels with the reference signal to determine the transmission status of all transmission channels. At this time, by comparing the reference signal and the output signal and checking the distortion of the waveform, it is possible to determine whether the signal transmission module is operating normally.

The inspection of the power supply module will be described.

Connect the power module (PWM), electric shut-off module (VIM), towing cable (30), winch (35), and connect the inspection equipment (100) to the ship's ship cable connection (36), power module (PWM) Connect the test equipment 100 to the output terminal of the) to operate the power module (PWM), and inspect all the power output from the power module (PWM).

The inspection of the vibration blocking module will be described.

After connecting the test equipment 100 to both ends of the unit module of the vibration blocking module (VIM), the reference signal is applied from the test signal generator 200 to the signal transmission module input terminal. Thereafter, the test equipment 100 compares the output signals of all transmission channels allocated to the acoustic channels with the reference signal to determine the transmission status of all transmission channels. At this time, by comparing the reference signal and the output signal and inspecting the distortion of the waveform, it is possible to diagnose the short-circuit of the output signal line, the gain control line and the power line of the signal transmission module (TDM) to check the normal state of the vibration blocking module (VIM). You can judge.

The inspection of the acoustic module will be described.

The sound module (AM) is composed of 16 different unit modules, and each unit module has a minimum of 3 channels and a maximum of 24 channels. In consideration of these characteristics, the inspection apparatus 100 should be able to diagnose a control line, that is, a channel, gain, and sample and hold (S / H) function, and whether there is a short circuit in the power line.

The reference signal is applied to the sound module input terminal from the test signal generator 200. Thereafter, the test equipment 100 compares the output signals of all transmission channels allocated to the acoustic channels with the reference signal to determine the transmission status of all transmission channels. At this time, it is possible to determine the abnormality of each sound channel by comparing the output of the sound channel and the test signal.

The inspection equipment self-test will be described.

The inspection equipment self-test is a means to verify the normal operation of the inspection equipment. It is desirable to inspect the following items.

The inspection equipment includes its own power supply, the power supplied to the inspection module, the demux function of the inspection equipment necessary for the signal transmission module and the system inspection, the normal operation of the test signal generator, the normal operation of the reference signal generator, And it should be possible to check the generation and transmission of the control signals necessary for the inspection of the acoustic module.

As described above, the device of the present invention compares the output signal for each transmission channel and the reference signal of the signal transmission module, thereby providing an effect of simply determining the abnormality of the cable connection state and the operation state for each channel of each module. .

The device of the present invention is also capable of simulating all modules before or after the insertion point, which also provides the effect of identifying abnormalities in front and rear of the connection point of the signal transmission module.

Although one embodiment of the present invention has been described in detail above with reference to the accompanying drawings, the present invention is not limited to the above description and various modifications are possible within the ordinary knowledge of those skilled in the art. It is obvious.

Claims (1)

A signal transmission module (TDM) including an acoustic module for converting sound generated from a sound source into an electrical signal and an auxiliary signal transmitter for converting an analog signal from the acoustic module into a digital signal and multiplexing and transmitting the same. ; A vibration blocking module for attenuating the vibration generated around the acoustic sensor unit and the towing vibration to prevent false signals from being captured; And, in the line array towing type sound wave detector comprising a non-acoustic module for transmitting the depth, temperature and azimuth information on the ship, A test signal generator 200 for comparing an output signal for each transmission channel with a reference signal to determine whether a transmission channel is abnormal; An inspection device 100 for inputting a reference signal to the signal transmission module TDM and supplying operation power; A broadband amplifier 60 for receiving a signal transmitted from the signal transmission module TDM and a power connector 70 for connecting power to the broadband amplifier; And, It is configured to include a winch connector 36 for supplying the operating power to the signal transmission module (TDM), the operation test that can diagnose the presence or absence of the operation of the signal transmission module (TDM) and each channel abnormality Device.