CN115980722A

CN115980722A - Underwater detection structure with strong interference prevention performance

Info

Publication number: CN115980722A
Application number: CN202310085758.9A
Authority: CN
Inventors: 安庆; 陈艳华; 李智芬; 高翠芬
Original assignee: Wuchang University of Technology
Current assignee: Wuchang University of Technology
Priority date: 2023-02-09
Filing date: 2023-02-09
Publication date: 2023-04-18

Abstract

The invention provides an underwater detection structure with strong interference resistance, which relates to the technical field of remote detection and comprises a lower probe rod, a transmitting part arranged at the end part of the lower probe rod and at least two receiving plates arranged at the outer side of the lower probe rod, wherein the area of each receiving plate is increased along with the increase of the distance between the receiving plate and the transmitting part. The ultrasonic detection device is convenient to set, has low cost, can receive ultrasonic waves through a plurality of receiving plates with different areas, and is used for reducing the interference of noise information and improving the detection accuracy.

Description

Underwater detection structure with strong interference prevention performance

Technical Field

The invention relates to the technical field of remote detection, in particular to an underwater detection structure with strong interference resistance.

Background

The sonar detection device is an electronic device which utilizes the propagation characteristic of sound waves under water, completes underwater detection and communication tasks through electroacoustic conversion and information processing, utilizes the underwater sound waves to detect, position and communicate underwater targets, and is the most widely and most important device in water acoustics, so that the sonar detection device is continuously innovated and developed, basically meets the use requirements of people, and still has certain problems.

Traditional sonar detection device is in the use, still can be disturbed by part noise, leads to surveying inaccurately, and the testing result of giving people brings the deviation, has reduced the accuracy that detects, so to the requirement that promotes sonar detection precision under water more and more high.

For example, chinese patent utility model patent CN209673997U discloses a sonar detection device under water for detecting target characteristic, including sonar detection device body and sound absorption cotton, the left side welding of sonar detection device body has the isolation frame, and keeps apart the outer wall surface of frame left end and evenly seted up first through-hole, be provided with into the vocal area on the inner wall of isolation frame, and evenly seted up the second through-hole on advancing the vocal area, it has the sound wave passageway to open in the inner wall of isolation frame, and has seted up the fluting in the isolation frame inner wall of sound wave passageway right side tip. This a sonar detection device under water for detecting target characteristic absorbs through the noise of coming to one side and weakens and change its direction, avoids the noise to get into the receiving area of sonar detection device body, has weakened the interference of noise to a certain extent, avoids bringing the deviation for the testing result, has improved the accuracy that sonar detection device body detected.

However, the underwater sonar detection device still has the following disadvantages: additionally add the device and reform transform the detection body in order to reach and carry out absorptive purpose to the noise, set up troublesome with high costs, and too much when impurity under water, can't effectively carry out accurate detection when the noise is more.

Therefore, in order to solve the above problems, it is necessary to design a reasonable underwater detecting structure with strong interference resistance.

Disclosure of Invention

The invention aims to provide an underwater detection structure which is convenient to set, has low cost, can receive ultrasonic waves through a plurality of receiving plates with different areas, is used for reducing the interference of noise information and improving the detection accuracy and has strong interference prevention performance.

In order to achieve the purpose, the invention is realized by adopting the following technical scheme:

the utility model provides a strong underwater detection structure of jam-proof performance, includes probe rod down, set up in the transmission portion of probe rod tip and set up in the dash receiver in the probe rod outside down, the quantity of dash receiver is two at least, just the dash receiver the area along with the grow and the grow of the distance of transmission portion.

Preferably, at least a portion of the receiving plate is curved.

Preferably, the receiving plate is an annular plate.

Preferably, the outer diameter of the receiving plate is proportional to the distance from the receiving plate to the transmitting portion.

Preferably, an edge of the receiving plate on a side close to the transmitter is provided with an acoustic insulating pad.

Preferably, the sound insulation pad is a polyester-lactic acid product.

The underwater detection structure with strong interference prevention performance has the beneficial effects that: the ultrasonic detection device is convenient to set, low in cost and capable of receiving ultrasonic waves through the receiving plates with different areas and sizes, interference of noise information is reduced, and detection accuracy is improved.

Drawings

FIG. 1 is a schematic structural diagram of an underwater detection structure with strong interference prevention performance according to the present invention;

FIG. 2 is a schematic structural diagram of a receiving plate of an underwater detection structure with strong interference prevention performance according to the present invention;

wherein: 1. the sound insulation device comprises a lower probe rod 2, a transmitting part 3, a receiving plate 31 and a sound insulation pad.

Detailed Description

The following are specific examples of the present invention and further describe the technical solutions of the present invention, but the present invention is not limited to these examples.

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the modules and structures set forth in these embodiments does not limit the scope of the invention unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques, methods, and systems known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

Example (b): as shown in fig. 1, which is only one embodiment of the present invention, an underwater exploration structure with strong interference prevention performance comprises a sounding rod 1, a transmitting part 2 disposed at an end of the sounding rod 1, and receiving plates 3 disposed outside the sounding rod 1, wherein the number of the receiving plates 3 is at least two, and the area of the receiving plates 3 increases as the distance from the transmitting part 2 increases.

In the invention, one end of the lower probe rod 1, which is far away from the launching part 2, is fixed on a ship body, and the ship body is a substitute, and can be a ship floating on the water surface, a submarine diving into the water, or even a certain beam body of an overwater operation platform.

Moreover, the lower probe rod 1 does not necessarily extend downward, and precisely, the lower probe rod 1 extends toward the direction of the detection target, for example, only when the detection target is located right below the ship body, the lower probe rod 1 extends vertically downward, and the launching part 2 is located at the lower end of the lower probe rod 1.

The transmitting part 2 transmits ultrasonic waves, and the ultrasonic waves are reflected by a detection target and then received by a receiving plate 3 on the outer side of the lower probe rod 1.

In addition, the receiving surface of the receiving plate 3 is disposed perpendicular to the lower probe rod 1 so that the ultrasonic signal reflected from the probe target can be received maximally.

Here, at least a portion of the receiving plate 3 has an arc shape.

Preferably, the receiving plate 3 is an annular plate.

It is noted that the outer diameter of the receiving plate 3 is proportional to the distance of the receiving plate 3 from the transmitting part 2.

For example, there are three receiving boards 3, namely a first receiving board at a distance of 1 meter from the transmitting part 2, a second receiving board at a distance of 3 meters from the transmitting part 2, and a third receiving board at a distance of 7 meters from the transmitting part 2, and if the outer diameter of the first receiving board is 10cm, the outer diameter of the second receiving board should be 30cm, and similarly, the outer diameter of the third receiving board should be 70cm.

At this time, since the front receiving plate can shield the rear receiving plate, the area of the first receiving plate for receiving the ultrasonic signal is an annular area with the outer diameter of 10cm and the outer diameter of the lower probe rod 1 as the inner diameter; the area of the second receiving plate for receiving the ultrasonic signals is an annular area with the inner diameter of 10cm and the outer diameter of 30 cm; the area of the third receiving plate for receiving the ultrasonic signals is an annular area with an inner diameter of 30cm and an outer diameter of 70cm.

In the present invention, the distance between any one of the receiving plates 3 and the transmitting part 2 and the distance between two adjacent receiving plates 3 are not less than the predetermined length L.

Wherein the predetermined length L is the least common multiple of the wavelength value and the amplitude value of the ultrasonic wave emitted by the emitting part 2, for example, in the ultrasonic wave emitted by the ultrasonic wave emitter of the emitting part 2, the amplitude is 2 cm, the frequency is 50MHz, the propagation speed of the acoustic wave in water is 1500 meters per second, the wavelength is 3 cm, and L is at least 6 cm.

Also, the edge of the side of the receiving plate 3 close to the transmitter 2 is provided with an acoustic insulating pad 31. The outer edge of the ultrasonic receiving area of the receiving plate 3 can be clearer, the inner edge of the receiving area of the other receiving plate 3 behind the receiving plate 3 can be clearer, and detection interference is reduced as much as possible.

Of course, the acoustic insulator mat 31 is a polyester-lactic acid product.

The underwater detection structure with strong interference prevention performance is convenient to set and low in cost, can receive ultrasonic waves through the plurality of receiving plates with different areas, and is used for reducing the interference of noise information and improving the detection accuracy.

The present invention is not limited to the above-described specific embodiments, and various modifications and variations are possible. Any modifications, equivalents, improvements and the like made to the above embodiments in accordance with the technical spirit of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a strong underwater detection structure of jam-proof performance which characterized in that: the device comprises a lower probe rod (1), a transmitting part (2) arranged at the end part of the lower probe rod (1) and receiving plates (3) arranged on the outer side of the lower probe rod (1), wherein the number of the receiving plates (3) is at least two, and the areas of the receiving plates (3) become larger along with the increase of the distance from the transmitting part (2).

2. The underwater detecting structure with strong interference resistance of claim 1, wherein: at least one part of the receiving plate (3) is arc-shaped.

3. The underwater detecting structure with strong interference resistance of claim 1, wherein: the receiving plate (3) is an annular plate.

4. A high interference rejection underwater detection structure as claimed in claim 3, wherein: the outer diameter of the receiving plate (3) is proportional to the distance of the receiving plate (3) from the transmitting part (2).

5. The underwater detecting structure with strong interference resistance of claim 1, wherein: the edge of one side of the receiving plate (3) close to the emitter (2) is provided with a sound insulation pad (31).

6. The underwater detecting structure with strong interference resistance of claim 5, wherein: the sound insulation pad (31) is a polyester lactic acid product.