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KR101272559B1 - Intelligent sonar systems - Google Patents

Intelligent sonar systems Download PDF

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Publication number
KR101272559B1
KR101272559B1 KR1020110136161A KR20110136161A KR101272559B1 KR 101272559 B1 KR101272559 B1 KR 101272559B1 KR 1020110136161 A KR1020110136161 A KR 1020110136161A KR 20110136161 A KR20110136161 A KR 20110136161A KR 101272559 B1 KR101272559 B1 KR 101272559B1
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South Korea
Prior art keywords
cavitation
data
transducer
sonar system
range
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KR1020110136161A
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Korean (ko)
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박승수
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소나테크 주식회사
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/02Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
    • G01S15/06Systems determining the position data of a target
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/88Sonar systems specially adapted for specific applications
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/88Sonar systems specially adapted for specific applications
    • G01S15/89Sonar systems specially adapted for specific applications for mapping or imaging
    • G01S15/8906Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques
    • G01S15/8909Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques using a static transducer configuration
    • G01S15/8915Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques using a static transducer configuration using a transducer array

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  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

PURPOSE: An intelligent sonar system is provided to remove a cavitation domain by analyzing the received data of each element underwater, to give different weight by estimating a range of cavitation occurring on a surface of a transducer, and to obtain reliable data by minimizing an effect of cavitation during high speed sailing, thereby maximizing efficiency of a sonar system. CONSTITUTION: An intelligent sonar system using a transducer(1) consists of an element unit(3) including an array of elements(2) in a wider area than that of cavitation inside the transducer, an FPGA module(4) receiving data obtained by each element, classifying data within a certain time into cavitation and removing the data, and a wire unit(5) connecting each element to the FPGA module. The intelligent sonar system minimizes an effect of cavitation by estimating a range of cavitation through classifying elements influenced by cavitation, giving different weight to reception sensitivity, and standardizing obtained data.

Description

지능형 소나 시스템 {intelligent sonar systems}Intelligent sonar systems

본 고안은 캐비테이션(cavitation)에 강인한 지능형 소나 시스템에 관한 것으로, 더욱 상세하게는 각 엘리먼트(element)의 수신 데이터를 분석해 캐비테이션(cavitation) 영역을 제거하고, 다수의 엘리먼트(element)를 배열하여 트랜스듀서(transducer)표면의 캐비테이션(cavitation) 범위를 추정하고, 수신되는 데이터의 신호처리 시 상기 추정한 캐비테이션(cavitation)의 범위에 따라 각각의 엘리먼트(element)에 가중치를 차등 적용하여, 음파 송수신 시 캐비테이션(cavitation)의 영향을 최소화하고 획득 데이터의 신뢰성을 향상 시킬 수 있도록 한 것이다.    The present invention relates to an intelligent sonar system that is robust to cavitation. More particularly, the present invention analyzes the received data of each element to remove the cavitation region, and arranges a plurality of elements to form a transducer. To estimate the cavitation range of the surface, and to differentially apply the weight to each element according to the estimated cavitation range in the signal processing of the received data, It is to minimize the effects of cavitation and improve the reliability of the acquired data.

수중 소나 시스템의 트랜스듀서(transducer)에 있어서, 표면의 압력이 그 부분의 수온에 대한 포화 압력 이하로 되면 고체 표면과 물 사이에 기포가 발생하여 빈 공간이 생기는 캐비테이션(cavitation)현상이 발생한다.{캐비테이션(cavitaion) 은 공동현상(空洞現像)의 동의어(同義語)이므로 본 발명에서는 캐비테이션(cavitaion)으로 총칭하여 설명한다.} 현상이 발생한다.In a transducer of an underwater sonar system, when the surface pressure is below the saturation pressure of the water temperature of the part, bubbles are generated between the solid surface and the water, thereby causing a cavitation phenomenon. {Cavitation is synonymous with cavitation, so in the present invention will be described collectively as cavitation.} The phenomenon occurs.

이와 같은 캐비테이션(cavitation) 현상에 의해 발생한 기포(氣泡)는 송신된 음파를 트랜스듀서(transducer)표면에서 강하게 반사하며, 엘리먼트(element)에 수신되는 데이터를 교란하여 획득한 데이터의 신뢰성을 저하시킨다.Bubbles generated by such a cavitation phenomenon strongly reflect the transmitted sound waves on the transducer surface, and deteriorate the reliability of the data obtained by disturbing the data received by the element.

그러나 현재 캐비테이션(cavitation)을 극복하는 방안이 없어 정상적인 데이터 획득을 위해서는 캐비테이션 현상이 발생하지 않도록 저속 운행해야 하므로 소나 시스템의 활용도가 떨어지는 단점이 있다.
However, there is no current method for overcoming cavitation, so that the normal speed of data acquisition requires low-speed operation so that cavitation does not occur.

본 발명은 수중에서 각 엘리먼트(element)의 수신 데이터를 분석해 캐비테이션(cavitation)영역을 제거하고, 트랜스듀서 표면에 발생하는 캐비테이션의 범위를 추정하고, 상기 추정한 캐비테이션(cavitaiton)의 범위에 가중치를 차등 적용하고 획득 데이터의 신뢰성을 높여 고속 운항시 캐비테이션(cavitaiton)의 영향을 최소화하여 데이터를 취득함으로 소나 시스템의 효율성을 극대화하는데 그 목적이 있다.
The present invention analyzes the received data of each element in water to remove the cavitation region, estimate the range of cavitation occurring on the transducer surface, and differentially weight the range of the estimated cavitation. Its purpose is to maximize the efficiency of sonar systems by acquiring data by minimizing the effects of cavitation during high-speed operation by increasing the reliability of acquired data.

본 발명은 상기의 과제를 해결하는 수단으로, 다수의 엘리먼트(element)를 배열하여 캐비테이션{(cavitaiton), 공동현상(空洞現像)의 동의어(同義語) 이므로 본 발명에서는 캐비테이션(cavitaiton)으로 총칭하여 언급한다}의 영향보다 넓은 범위에서 초음파 데이터를 수신하고, FPGA모듈(field-program mable gate array module)을 이용해 각각의 엘리먼트(element)에서 획득한 데이터 중 일정 시간범위 이내의 데이터를 캐비테이션(cavitaiton)으로 판단하여 제거하고, In order to solve the above problems, the present invention is a synonym of cavitation (cavitation) and cavitation by arranging a plurality of elements, so that the present invention is collectively referred to as cavitation (cavitaiton). Ultrasonic data is received in a wider range than the effect of the above mentioned method, and the cavitation is performed within a certain time range among data acquired at each element using an FPGA module (field-programmable gate array module). Judge and remove,

상기의 캐비테이션(cavitaiton)이 발생한 엘리먼트(element)를 분류하여 트랜스듀서(transducer) 표면에 발생하는 캐비테이션(cavitaiton)의 범위를 추정하고, 캐비테이션(cavitaiton)범위의 데이터 크기를 구분하여 신호처리 시 각각의 엘리먼트(element)에 수신감도를 차등 적용함으로써 획득하는 데이터를 평준화하여 탐지 신뢰성을 높인 지능형 소나 시스템을 제공하는 것이다.
By classifying the elements in which the cavitation occurs, the range of cavitation occurring on the surface of the transducer is estimated, and the data size of the cavitation range is classified to separate the respective cavities. The present invention provides an intelligent sonar system that increases the reliability of detection by equalizing data obtained by differentially applying reception sensitivity to an element.

본 발명은 캐비테이션의 발생 정도를 감지하여 신호처리시 캐비테이션(cavitaiton)영역을 제거하고 각각의 엘리먼트(element)에 수신감도를 차등 적용하므로, 획득데이터의 신뢰성을 높이고 탐지 성능을 극대화하며, 고속 운행 시에도 캐비테이션(cavitaiton)의 영향을 최소화하면서 데이터를 안정적으로 획득하여 소나 시스템의 성능을 극대화하는 효과가 있는 것이다.
The present invention detects the occurrence of cavitation, removes the cavitation area during signal processing, and differentially applies the reception sensitivity to each element, thereby increasing the reliability of the acquired data and maximizing detection performance, and at high speeds. In addition, it minimizes the effects of cavitation (cavitaiton), while reliably acquiring data to maximize the performance of the sonar system.

도 1 은 본 발명의 구성을 설명한 배치도.
도 2 는 본 발명의 구성을 설명한 흐름도.
도 3 은 본 발명의 사용 예시도.
1 is a layout diagram illustrating a configuration of the present invention.
2 is a flow chart illustrating a configuration of the present invention.
3 is an exemplary use of the present invention.

본 발명은 트랜스듀서(transducer)에 다수의 엘리먼트(element)(2)를 배열하여 캐비테이션(cavitaiton)의 영향보다 넓은 범위에서 초음파 데이터를 수신하고, The present invention arranges a plurality of elements (2) in a transducer to receive ultrasonic data in a wider range than the effects of cavitation (cavitaiton),

FPGA모듈(field-program mable gate array module)(4)를 이용해 각각의 엘리먼트(element)(2)에서 획득한 데이터 중 일정 시간범위 이내의 데이터를 캐비테이션(cavitaiton)으로 판단하여 제거하고, 캐비테이션(cavitaiton)기포(氣泡)(6)의 범위를 추정하고,Using a field-programmable gate array module (4), the data within a certain time range of the data acquired from each element (2) is determined as a cavitation and removed, and the cavitation (cavitaiton) ) Estimate the range of bubbles (6),

캐비테이션(cavitaiton) 범위의 크기를 구분하여 FPGA모듈(field-program mable gate array module)(4)에서 신호처리 시 각각의 엘리먼트(element)(2)에 수신감도를 차등 적용함으로써 획득하는 데이터를 평준화하여 캐비테이션(cavitaiton)의 영향을 최소화하는 것을 특징으로 하는 것이다.
By dividing the size of the cavitation range, the field-programmable gate array module (4) equalizes the data obtained by differentially applying the reception sensitivity to each element (2) during signal processing. It is characterized by minimizing the effects of cavitation (cavitaiton).

본 발명은 고속 운항시 트랜스듀서(transducer)(1) 표면에 캐비테이션(cavitaiton)기포(氣泡)(6)가 발생하여도 FPGA모듈(field-program mable gate array module)(4)에서 감지하고 해당 범위 내의 엘리먼트(element)(2)들의 캐비테이션(cavitaiton) 영역을 제거하고 수신 감도를 차등 적용하여 획득데이터를 평준화할 수 있어, 소나 시스템의 신뢰성과 효율성을 극대화하는 것이다.   According to the present invention, the field-programmable gate array module 4 detects and detects a range of cavitation bubbles 6 on the surface of the transducer 1 at high speed. By eliminating the cavitation area of the elements 2 and applying the received sensitivity differentially, the obtained data can be equalized to maximize the reliability and efficiency of the sonar system.

당해 분야의 기술을 숙지하는 것이 이해될 수 있도록 본 발명에 가장 적합한 실시형태를 전술한 바와 같이 개시하였으나, 이것들은 결코 본 발명에 한정되는 것은 아니다. 본 발명의 취지와 영역을 벗어나지 아니하는 범위 내에서 각종의 변경이나 수정을 가할 수 있다. 따라서 본 발명의 특허청구범위 청구항의 범위는 이러한 변경이나 수정을 포함하여 넓게 해석되어야만 한다.
Embodiments that are best suited for the present invention have been disclosed as described above so that it is understood that the art of the art will be understood, but these are by no means limited to the present invention. Various changes and modifications can be made without departing from the spirit and scope of the invention. Therefore, the scope of the claims of the present invention should be construed broadly, including such changes or modifications.

1 트랜스듀서(transducer)
2 엘리먼트(element)
3 엘리먼트부 (element part)
4 FPGA모듈(field-program mable gate array module)
5 배선부
6 캐비테이션(cavitaiton)기포(氣泡)
7 수중물체
1 transducer
2 element
3 element part
4 FPGA module (field-programmable gate array module)
5 Wiring
6 cavitation bubbles
7 Underwater Objects

Claims (1)

엘리먼트부(3)와 배선부(5) 및 FPGA모듈(4)로 구성되는 트랜스듀서(1)를 이용한 지능형 소나 시스템에 있어서,
상기의 트랜스듀서(1) 내부에 캐비테이션 영역보다 넓은 범위에 다수의 엘리먼트(2)로 배열된 엘리먼트부(3)와,
각각의 엘리먼트(2)와 FPGA모듈(4)을 연결하는 배선부(5)와,
FPGA모듈(4)에서 각각의 엘리먼트(2)에서 획득한 데이터를 수신하여 일정 시간 범위 이내의 데이터를 캐비테이션으로 분류하여 제거하고,
캐비테이션의 영향을 받는 엘리먼트(2)들을 분류하여 캐비테이션 범위로 추정하고 수신감도를 차등 적용하고 획득 데이터를 평준화하여 캐비테이션의 영향을 최소화할 수 있도록 한 것을 특징으로 하는 지능형 소나 시스템.
In an intelligent sonar system using the transducer 1 composed of the element portion 3, the wiring portion 5, and the FPGA module 4,
An element part 3 arranged in a plurality of elements 2 in a wider range than the cavitation area inside the transducer 1,
A wiring portion 5 connecting each element 2 and the FPGA module 4,
In the FPGA module 4, the data acquired from each element 2 is received, and the data within a predetermined time range are classified and removed by cavitation,
An intelligent sonar system, characterized by classifying elements (2) affected by cavitation to estimate the cavitation range, applying the received sensitivity differential, and leveling the acquired data to minimize the effects of cavitation.
KR1020110136161A 2011-12-16 2011-12-16 Intelligent sonar systems KR101272559B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104483666A (en) * 2014-12-11 2015-04-01 哈尔滨工程大学 Sonar display and control device based on FPGA
KR101876909B1 (en) * 2015-12-24 2018-07-10 한국해양과학기술원 Color display method of sonar images and sonar system for easy target identification using threreof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05142345A (en) * 1991-11-25 1993-06-08 Kaijo Corp Sea bottom surface survey device using ultrasonic wave
KR0143151B1 (en) * 1995-01-23 1998-08-17 이민화 Digital beam forming method and apparatus using multidimensional sampling
JP2901535B2 (en) * 1996-02-23 1999-06-07 アロカ株式会社 Ultrasound diagnostic equipment

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05142345A (en) * 1991-11-25 1993-06-08 Kaijo Corp Sea bottom surface survey device using ultrasonic wave
KR0143151B1 (en) * 1995-01-23 1998-08-17 이민화 Digital beam forming method and apparatus using multidimensional sampling
JP2901535B2 (en) * 1996-02-23 1999-06-07 アロカ株式会社 Ultrasound diagnostic equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104483666A (en) * 2014-12-11 2015-04-01 哈尔滨工程大学 Sonar display and control device based on FPGA
KR101876909B1 (en) * 2015-12-24 2018-07-10 한국해양과학기술원 Color display method of sonar images and sonar system for easy target identification using threreof

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