KR19990028135U - Monitor device of sonar detection system - Google Patents

Abstract

The present invention relates to a device for monitoring the normal operation of the pre-arranged towed sound detector, and more particularly, to a device for diagnosing the cable connection of the sound detector system, the presence or absence of an output signal, and the normal operation of each module in real time. It is about.

The present invention includes a synchronization signal input unit for receiving the synchronization signal for each frame output from the acoustic sensor unit, an address input unit for receiving the address signal for each channel, and an acoustic signal input unit for receiving the audio signal for each channel A signal input unit; A sample and hold circuit section for sampling a signal output from the signal input section; A digital signal processor for reproducing an audio signal and an auxiliary sensor signal by performing digital processing of the signal through the sample and hold circuit unit; And, by providing a monitor device for operating the acoustic sensor unit, characterized in that it comprises a personal computer for outputting the signal processed by the digital signal processing unit, the device of the present invention to monitor the operating state of the acoustic sensor unit in real time Therefore, it is possible to reproduce the reception state on the ship, and also it is possible to diagnose the operation state of the various array modules and the simulation of the operation state, so that it is possible to easily grasp the operation abnormality of the acoustic sensor unit.

Description

Monitor device of sonar detection system

The present invention relates to a device for monitoring the normal operation of the pre-arranged towed sound detector, and more particularly, to a device for diagnosing the cable connection of the sound detector system, the presence or absence of an output signal, and the normal operation of each module in real time. 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.

FIG. 1 is a block circuit diagram schematically illustrating a general linear towed underwater acoustic detection system. 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 pre-arranged towed hydroacoustic detection system 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.

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 order to check the normal operation of the various arrangements to receive the transmission signal from the onboard data receiving device and to check the normal operation, to check whether the normal operation of each module on the ship in time and place, Difficult problem exists.

The present invention has been made to solve the above problems, an object of the present invention is a monitor having a function that can diagnose in real time the operating status of the various sensor unit constituting the sound detector and the operating status of each unit module in real time The object is to provide a device.

1 is a block circuit diagram schematically showing a circuit configuration of a general linear arrangement towed hydroacoustic detection system;

Figure 2 is a schematic diagram showing the appearance of the acoustic sensor unit of the pre-arranged towed hydroacoustic detection system that is the inspection object of the present invention device,

Figure 3 is a block diagram showing the overall configuration of the underwater acoustic detection system monitoring device configured according to the present invention,

4 is a block diagram showing a specific configuration of a monitor device according to the present invention.

※ Explanation of code about main part of drawing ※

10; Acoustic sensor units 30 and 32; Towing cable

40; Shipboard 42; Data receiver

51; Tail rope assembly 52; Non-acoustic Module

53; Acoustic module 54; Signal transmission module

55; Vibration isolation module 202; Sound signal input

204; A synchronization signal input unit 206; Channel Address Input

200; Signal input unit 210; Sample and hold circuit section

220; Digital signal processor 230; Personal computer

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 addition, the apparatus for monitoring the normal operation of the acoustic sensor unit of the pre-arranged towed sonar detection system comprising a non-acoustic module for transmitting the depth, temperature and azimuth information on the ship, which is output from the acoustic sensor unit A signal input unit including a synchronization signal input unit for receiving a synchronization signal for each frame, an address input unit for receiving an address signal for each channel, and an audio signal input unit for receiving an audio signal for each channel; A sample and hold circuit section for sampling a signal output from the signal input section; A digital signal processor for reproducing an audio signal and an auxiliary sensor signal by performing digital processing of the signal through the sample and hold circuit unit; And a personal computer for outputting the signal processed by the digital signal processing unit.

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

Figure 3 is a block diagram showing the overall configuration of the underwater sound detection system monitoring device configured in accordance with the present invention.

The monitoring device of the present invention receives the ship information 110, the auxiliary sensor information 120 and the acoustic sensor signal 130 for each channel, and performs the control, operation and output function through the personal computer 140.

The ship information 110 is information which means the azimuth and speed of the ship 40. This information is used as data for judging the current situation of the acoustic sensor unit. In addition, the auxiliary sensor information 120 means the azimuth, depth and seawater temperature of the acoustic sensor unit. The acoustic sensor unit has 16 channels, and each channel is divided and transmitted by frequency band of underwater sound.

On the other hand, the acoustic module (AM) of the acoustic sensor unit is composed of 16 different unit modules, each of the acoustic channel has a maximum of 24 channels from the minimum 3 channels. In consideration of these characteristics, the monitoring device of the present invention monitors the control line, that is, the channel, gain, and sample and hold (S / H) function, and whether there is a short circuit in the power line.

4 is a block diagram showing a specific configuration of a monitor device according to the present invention.

The input unit 200 of the monitoring device includes an audio signal input unit 202 for each channel, a synchronization signal input unit 204 for receiving a frame synchronization signal, and an address input unit 206 for receiving an address signal for each channel.

The signal output from the input unit 200 is input to the sample and hold circuit unit 210. This circuit holds the signal voltage after the signal is completely settled as each acoustic channel changes, and is responsible for the signal processing in the next section. An integrated circuit that is responsible for such a function is required to have a fast operating speed, and it is preferable to use a large input voltage range in the present invention.

The digital signal processor 220 is a signal processor that processes an audio signal output through the sample and hold circuit 210 and reproduces an original signal.

The signal processor 220 includes a data reception amplifier, a decoder, and a demux for amplifying a signal multiplexed and transmitted by the acoustic sensor. Accordingly, the digital signal processor 220 may also be referred to as a device that simulates the underwater acoustic listening device in the ship 40.

The signal output through the signal processing unit 220 may be output to the user through the personal computer 230 of the rear stage, it is also possible to record the monitoring status of the operating state on the storage medium.

By using the monitoring device of the present invention as described above, it is possible to monitor the operating state of the acoustic module of the acoustic sensor unit and the operating state of the signal transmission module in real time.

As described above, the device of the present invention can monitor the operating state of the acoustic sensor unit in real time, can reproduce the reception state on the ship, and can also diagnose the operating state of the various array modules and simulate the operating state Therefore, it provides an effect that can easily grasp the abnormal operation of the acoustic sensor unit.

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 comprising a sound 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 sound module into a digital signal and multiplexing 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; In addition, in the apparatus for monitoring the normal operation of the acoustic sensor unit of the pre-arranged towed sonar detection system comprising a non-acoustic module for transmitting the depth, temperature and azimuth information on the ship, And a synchronization signal input unit for receiving the synchronization signal for each frame output from the acoustic sensor unit, an address input unit for receiving the address signal for each channel, and an acoustic signal input unit 202 for receiving the audio signal for each channel. Signal input unit 200; A sample and hold circuit unit 210 for sampling a signal output from the signal input unit 200; A digital signal processor 220 for reproducing an audio signal and an auxiliary sensor signal by performing digital processing of the signal through the sample and hold circuit 210; And, And a personal computer (230) for outputting the signal processed by the digital signal processor.