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Omnidirectional acoustic detection sonar and detection method

An omnidirectional, sonar technology, applied in measurement devices, re-radiation of sound waves, radio wave measurement systems, etc., can solve the limitations of acoustic detection technology, low scanning efficiency and other problems, and achieve easy installation, high data transmission rate, and efficient acquisition. Effect

Pending Publication Date: 2022-04-29
中科探海(深圳)海洋科技有限责任公司
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AI Technical Summary

Problems solved by technology

[0008] (3) Limitations of traditional acoustic detection technology
[0012] The principle of single-beam sonar is simple and the price is low, but the beam opening angle is only a few degrees, and the scanning efficiency is low

Method used

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  • Omnidirectional acoustic detection sonar and detection method
  • Omnidirectional acoustic detection sonar and detection method
  • Omnidirectional acoustic detection sonar and detection method

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Embodiment

[0044] Describe the working steps of the omnidirectional acoustic detection sonar with a specific parameter.

[0045] (1) Set the working parameters of the omnidirectional acoustic detection sonar. Configure detailed working parameters, including working frequency f 0 =600kHz, working bandwidth B=60kHz, sending cycle PRT=100ms, pulse width T=2ms, signal type is LFM, transmitting power ρ=60%, sampling frequency is f s =200kHz, the number of sampling points N=180000, etc., indicating that the data of 90ms has been collected, and the corresponding range is 67.5m.

[0046] (2) Control the sonar to start work. After the start command is sent to the omnidirectional acoustic detection sonar probe, the omnidirectional acoustic detection sonar starts to work, including periodically sending sound waves and receiving echoes, etc. The base array rotates at a constant speed to achieve 360-degree scanning.

[0047] (3) The receiving array and the receiver receive sound waves and perform...

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Abstract

The invention discloses an omni-directional acoustic detection sonar and a detection method. The omni-directional acoustic detection sonar comprises an omni-directional acoustic detection sonar body (a transmitting device, a receiving device and an electronic system thereof), an acoustic transmission cover, a shell, a cable and a vulcanized joint. The device has the beneficial effects that the device can quickly and efficiently acquire the pipeline condition and needs 360-degree omnidirectional underwater scanning, the device is convenient to install and high in data transmission rate, the transmitting array in the sonar transmits sound waves to water, the sound waves are reflected by an object to form echoes, the receiving array in the sonar receives sound signals and then converts the sound signals into electric signals, and the electric signals are transmitted to the sonar. And automatically detecting a target position according to user setting, and displaying an image, a target point or a contour in upper computer software according to user selection.

Description

technical field [0001] The invention relates to the technical field of underwater acoustic imaging applications, in particular to an omnidirectional acoustic detection sonar and a detection method. Background technique [0002] In underwater detection applications, there are many application requirements that require 360-degree circumferential detection. Typical situations include: underwater vehicle collision avoidance, pipeline inner wall detection, wind turbine pile foundation monitoring, fishery resource monitoring, etc. [0003] Take the inspection of urban sewer pipes as an example. Flood disasters occur frequently in our country, among which the adverse impact of urban waterlogging on the social economy is particularly huge. An important part of sponge cities is underground pipelines. At present, the total number of underground pipelines for water supply and drainage in my country has reached more than one million kilometers, and 60% of cities have No survey of under...

Claims

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Application Information

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IPC IPC(8): G01S15/06G01S15/88G01S15/89G01S15/93
CPCG01S15/06G01S15/88G01S15/89G01S15/93
Inventor 刘维任申真杨昺崧江泽林
Owner 中科探海(深圳)海洋科技有限责任公司
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