Inflatable sound reflection simulation device

Abstract

The invention relates to the technical field of sound reflection simulation, and discloses an inflatable sound reflection simulation device which comprises a water hose, sealing assemblies are arranged at the two ends of the water hose, a floating assembly is arranged at the top end of the water hose, a counterweight assembly is arranged at the bottom end of the water hose, and connecting assemblies are arranged on the sealing assemblies and correspond to the floating assembly and the counterweight assembly. And an inflation assembly is arranged on one side of the water hose. The water hose can be vertically located in water through the floating assembly and the counterweight assembly, and meanwhile, the inflation assembly can inflate the interior of the water hose. When an experiment is carried out, the transmitting device transmits a sound signal to the water band, air and water in the water band are two different media and have different acoustic characteristics, so that the air in the water band can directly reflect the sound signal to the receiving device, and the sound signal is transmitted to the water band through the receiving device. By means of the arrangement, the reflection simulation device can simulate the propagation process of the sound signals in real time, it is not needed to wait for receiving of the complete sound signals, and therefore the problem of time delay is effectively solved.

Description

Technical Field

[0001] The invention relates to the technical field of sound reflection simulation, in particular to an inflatable sound reflection simulation device. Background Art

[0002] At present, in hydroacoustic experiments, active underwater sound beacons are usually used to simulate underwater targets, of which transponders are a component. Transponders are mainly used for positioning, ranging and communication of hydroacoustic signals. When evaluating the reflection characteristics of targets, transponders are often used to convert the intensity of acoustic targets.

[0003] Since the transponder has the following characteristics: in passive mode, it does not actively transmit signals; it only receives external acoustic signals or performs monitoring; and it will only transmit a response signal after receiving a specific trigger signal, the transponder only simulates or imitates the acoustic signal and then processes it, instead of directly processing the original transmitted sound wave signal. This method cannot accurately simulate the attenuation, reflection, and transmission of the underwater acoustic signal after passing through the target in the real scene. At the same time, since the transponder needs to receive the acoustic signal completely before generating a response signal, there is a delay problem when the transponder reflects the underwater acoustic signal. Therefore, the received response signal has a delay related to the bandwidth of the active acoustic signal.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Summary of the invention

[0005] 1. Technical issues to be solved

[0006] In view of the shortcomings of the prior art, the present invention provides an inflatable sound reflection simulation device, which has the advantages of simulating the propagation process of sound signals in real time without waiting for the complete sound signal to be received, and solves the problem of time delay of the response signal related to the bandwidth of the active sound signal.

[0007] (II) Technical solution

[0008] In order to solve the technical problem that the response signal of the above-mentioned inflatable acoustic reflection simulation device has a time delay related to the bandwidth of the active acoustic signal, the present invention provides the following technical solution:

[0009] An inflatable sound reflection simulation device comprises a water hose, both ends of the water hose are provided with sealing components, the top of the water hose is provided with a floating component, the bottom of the water hose is provided with a counterweight component, the sealing component is provided with a connecting component corresponding to the floating component and the counterweight component, and one side of the water hose is provided with an inflatable component;

[0010] The floating component is used to pull the water hose in the water upward, the counterweight component is used to drive the bottom end of the water hose to move toward the bottom of the water so that the water hose is vertically in the water, and the inflation component is used to inflate the water hose.

[0011] Preferably, the sealing assembly comprises an upper end cover and a lower end cover, both of which are sleeved inside the water hose, and grooves are provided on the outer surfaces of the upper end cover and the lower end cover, and a throat clamp is sleeved on the outer surface of the water hose corresponding to the groove.

[0012] Preferably, the floating assembly includes a through-hole float, an upper connecting rope is arranged inside the through-hole float, the top end of the upper connecting rope passes through the through-hole float and is fixedly connected to a stopper, and the bottom end of the upper connecting rope is arranged on the top of the upper end cover.

[0013] Preferably, the counterweight assembly comprises a lower connecting rope, the lower connecting rope is arranged at the bottom of the lower end cover, and a counterweight block is arranged at the lower end of the lower connecting rope.

[0014] Preferably, the connecting assembly includes a threaded hole, which is arranged at the top of the upper end cover and the bottom of the lower end cover. The internal thread of the threaded hole is connected to a threaded rod, one end of the threaded rod is fixedly connected to a connecting ring, and a safety hook is arranged inside the connecting ring. The two safety hooks are connected together with the corresponding upper connecting rope and lower connecting rope, and the outer surfaces of the upper connecting rope and the lower connecting rope are provided with connecting sleeves.

[0015] Preferably, the inflation component includes an air compressor, a connecting pipe is provided on one side of the air compressor, both ends of the connecting pipe are rotatably connected with threaded connecting sleeves, an inflation hole is opened on the top of the upper end cover, an inflation nozzle is fixedly connected to the top of the upper end cover corresponding to the inflation hole, and a sealing cover is threadedly connected to the outer surface of the inflation nozzle.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the present invention provides an inflatable sound reflection simulation device, which has the following beneficial effects:

[0018] 1. The present invention can make the water hose vertically in the water through the floating component and the counterweight component, and the inflatable component can inflate the inside of the water hose. During the experiment, the transmitting device transmits the sound signal to the water hose. Since the air and water in the water hose are two different media with different acoustic properties, the air in the water hose can directly reflect the sound signal to the receiving device. The above setting enables the reflection simulation device to simulate the propagation process of the sound signal in real time without waiting for the complete sound signal to be received, thereby effectively solving the delay problem.

[0019] 2. The present invention enables the air compressor to transport air to the inside of the water hose through the connecting pipe, so that the water hose can expand under the action of air pressure and be cylindrical in the water. When conducting experiments, the air in the water hose can directly transmit the sound signal emitted by the generating device. Since the sound signal is directly reflected to the receiving device, the problem that traditional methods cannot accurately simulate the attenuation, reflection and transmission of the water acoustic signal after passing through the target in the real scene is solved. At the same time, it also enables the inflatable underwater sound reflection simulation device to simulate the propagation characteristics of the water acoustic signal and the reflection characteristics of the target, so as to be closer to the real working scene and provide more accurate simulation results.

[0020] 3. The present invention hangs the safety hook on the upper connecting rope inside the corresponding connecting ring, so that the through-hole float can pull the water hose in the water upward through the block, connecting rope, safety hook, connecting ring and upper end cover; and hangs the safety hook on the lower connecting rope inside the corresponding connecting ring, so that the counterweight can pull the water hose in the water downward through the lower connecting rope, safety hook, connecting ring and lower end cover. The through-hole float and the counterweight allow the water hose to be placed in any position in the hand for experiments, so that the inflatable underwater sound reflection simulation device can be suitable for different experimental environments and underwater acoustic systems, thereby improving the flexibility and adaptability of the inflatable underwater sound reflection simulation device when conducting experiments, and effectively solving the problem of universality of the inflatable underwater sound reflection simulation device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the external contour structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of the air compressor of the present invention;

[0023] Figure 3 It is a schematic diagram of the water hose structure of the present invention;

[0024] Figure 4 It is a schematic diagram of the structure of the sealing assembly of the present invention;

[0025] Figure 5 It is a schematic diagram of the structure of the counterweight assembly of the present invention;

[0026] Figure 6 It is a schematic diagram of the structure of the floating assembly of the present invention.

[0027] In the figure: 1. water hose; 2. sealing assembly; 201. upper end cover; 202. lower end cover; 203. groove; 204. throat clamp; 3. floating assembly; 301. through-hole float; 302. upper connecting rope; 303. block; 4. counterweight assembly; 401. lower connecting rope; 402. counterweight; 5. connecting assembly; 501. threaded hole; 502. threaded rod; 503. connecting ring; 504. safety hook; 505. connecting sleeve; 6. inflation assembly; 601. air compressor; 602. connecting pipe; 603. threaded connecting sleeve; 604. inflation hole; 605. inflation nozzle; 606. sealing cover. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] As introduced in the background technology, there are deficiencies in the prior art. In order to solve the above technical problems, the present application proposes an inflatable sound reflection simulation device.

[0030] See also Figure 1-6 , an inflatable sound reflection simulation device, comprising a water hose 1, both ends of the water hose 1 are provided with sealing components 2, the top of the water hose 1 is provided with a floating component 3, the bottom of the water hose 1 is provided with a counterweight component 4, the sealing component 2 is provided with a connecting component 5 corresponding to the floating component 3 and the counterweight component 4, and one side of the water hose 1 is provided with an inflatable component 6;

[0031] The floating component 3 is used to pull the water hose 1 in the water upward, the counterweight component 4 is used to drive the bottom end of the water hose 1 to move toward the bottom of the water so that the water hose 1 is vertically in the water, and the inflation component 6 is used to inflate the water hose 1.

[0032] The water hose 1 is placed in the water, and the counterweight assembly 4 can pull the water hose 1 downward, so that the water hose 1 can sink into the water as a whole, and the floating assembly 3 pulls the upper end of the water hose 1 through the buoyancy of the water, so that the water hose 1 can be vertically in the water, and then the water hose 1 is inflated through the inflation assembly 6. When conducting a hydroacoustic experiment, the transmitting device transmits an acoustic signal to the water hose 1, and the air in the water hose 1 can directly reflect the target acoustic signal to the receiving device.

[0033] The water hose 1 can be placed vertically in the water by means of the floating component 3 and the counterweight component 4, and the inflatable component 6 can inflate the inside of the water hose 1. During the experiment, the transmitting device transmits the acoustic signal to the water hose 1. Since the air and water in the water hose 1 are two different media with different acoustic properties, the air in the water hose 1 can directly reflect the acoustic signal to the receiving device. The above arrangement enables the reflection simulation device to simulate the propagation process of the acoustic signal in real time without waiting for the complete acoustic signal to be received, thereby effectively solving the problem of delay.

[0034] When conducting underwater acoustic experiments, it is necessary to use a simulated target with a target intensity of about 10-15dB for testing. The target intensity refers to the echo intensity reflected by objects such as fish, reefs, obstacles, etc. located in the water body. It is defined as the logarithm of the ratio of the reflected sound intensity at 1m away from the target acoustic center to the incident sound intensity from the distant sound source, in dB, that is: TS = 10l g (I r / I i).

[0035] By measuring the peak pressure of the reflected pulse at a long distance and converting it into the peak pressure value at 1m, this method is used to determine most of the target strength TS, especially the target strength of large targets. The sonar equation used for conversion is: EL = SL-2PL + TS. Among them, the echo intensity (EL) and the sound source intensity (SL) have been determined by measurement, and the propagation loss (PL) can be obtained by calculation or measured using a calibrated hydrophone at the target. When solving it by calculation, it can be assumed that it consists of spherical expansion and absorption loss. In this way, the target strength (TS) can be solved by the equation.

[0036] Therefore, it is necessary to prepare water hoses 1 of different specifications for conducting hydroacoustic experiments. The following are the theoretical target strength and underwater buoyancy calculation data of two different specifications of water hoses 1 during measurement.

[0037] Option 1:

[0038] A water hose 1 with a diameter of 50 mm and a length of 20 m is used as the simulated target. Its theoretical target strength is: 10l g(aL2 / 2λ)=10l g((0.025×202) / (2×(1500 / 3750)))=11dB; its theoretical buoyancy in water is: Ffloat=ρliquid gVrowel=1000×9.8×(3.14×0.0252×20)=385N, equivalent to 39kg.

[0039] Option 2:

[0040] A water hose 1 with a diameter of 80 mm and a length of 20 m is used as the simulated target. Its theoretical target strength is: 10l g(aL2 / 2λ)=10l g((0.04×202) / (2×(1500 / 3750)))=13dB, and its theoretical buoyancy in water is: Fbuoy=ρliquid gVrow=1000×9.8×(3.14×0.042×20)=985N, equivalent to 100kg

[0041] Furthermore, for the above-mentioned sealing assembly 2, the sealing assembly 2 includes an upper end cover 201 and a lower end cover 202, and the upper end cover 201 and the lower end cover 202 are both sleeved inside the water hose 1, and the outer surfaces of the upper end cover 201 and the lower end cover 202 are provided with a groove 203, and the outer surface of the water hose 1 is sleeved with a throat clamp 204 corresponding to the groove 203.

[0042] The upper end cover 201 and the lower end cover 202 are respectively moved to the inside of the two ends of the water hose 1, and then a plurality of throat hoops 204 are put on the outer surface of the water hose 1, and the rotating ends of the throat hoops 204 are rotated in turn, so that the throat hoops 204 can squeeze and lock the water hose, and the water hose 1 can sink into the corresponding groove 203 under the squeezing of the throat hoops 204. The above phenomenon ensures the effect of the upper end cover 201 and the lower end cover 202 cooperating to seal the two ports of the water hose 1. At the same time, under the restriction of the groove 203, the throat hoop 204 is not easy to slide on the outer surface of the water hose, so that the firmness of the throat hoop 204 when fixing the water hose 1 on the end cover can be guaranteed.

[0043] Furthermore, for the above-mentioned floating component 3, the floating component 3 includes a through-hole float 301, and an upper connecting rope 302 is arranged inside the through-hole float 301. The top end of the upper connecting rope 302 passes through the through-hole float 301 and is fixedly connected with a stopper 303, and the bottom end of the upper connecting rope 302 is arranged on the top of the upper end cover 201.

[0044] The through-hole float 301 in the water pulls the upper end cover 201 through the block 303 and the upper connecting rope 302 under the action of buoyancy, and the upper end cover 201 pulls the top of the water hose 1 through the corresponding groove 203 and the throat clamp 204. The setting of the through-hole float 301 allows the water hose to be set at any position in the water, so that the inflatable underwater sound reflection simulation device has high flexibility and adaptability, can be used in different experimental environments and underwater acoustic systems, and solves the problem of universality.

[0045] Furthermore, for the above-mentioned counterweight assembly 4, the counterweight assembly 4 includes a lower connecting rope 401, and the lower connecting rope 401 is arranged at the bottom of the lower end cover 202, and a counterweight block 402 is arranged at the lower end of the lower connecting rope 401.

[0046] When the water hose 1 is placed in water, the counterweight 402 can pull the lower end cover 202 downward through the lower connecting rope 401, and the lower end cover 202 can pull the water hose 1 downward with the assistance of the corresponding groove 203 and the throat clamp 204. Under the pulling of the counterweight 402, the water hose 1 is not easy to drift in the water during the experiment, so that the data obtained during the experiment is more accurate.

[0047] Furthermore, for the above-mentioned connecting component 5, the connecting component 5 includes a threaded hole 501, and the threaded hole 501 is set at the top of the upper end cover 201 and the bottom of the lower end cover 202. The internal thread of the threaded hole 501 is connected with a threaded rod 502, and one end of the threaded rod 502 is fixedly connected with a connecting ring 503, and a safety hook 504 is set inside the connecting ring 503. The two safety hooks 504 are connected together with the corresponding upper connecting rope 302 and lower connecting rope 401, and the outer surfaces of the upper connecting rope 302 and the lower connecting rope 401 are provided with a connecting sleeve 505.

[0048] By hanging the safety hook 504 provided at the bottom end of the upper connecting rope 302 inside the connecting ring 503 provided at the top of the upper end cover 201, the through-core float 301 can pull the upper end cover 201 upward through the block 303, the upper connecting rope 302, the safety hook 504 and the connecting ring 503; by hanging the safety hook 504 provided at the top end of the lower connecting rope 401 inside the connecting ring 503 provided at the bottom of the lower end cover 202, the counterweight 402 can pull the lower end cover 202 downward through the lower connecting rope 401, the safety hook 504 and the connecting ring 503. The provision of the safety hook 504 makes it more convenient to connect the upper connecting rope 302 and the lower connecting rope 401 with the corresponding end cover, so that the overall device is more convenient to assemble. The connecting sleeve 505 can squeeze the stacked connecting ropes, so that the firmness of the connection between the connecting rope and the safety hook 504 can be guaranteed.

[0049] Furthermore, for the above-mentioned inflation component 6, the inflation component 6 includes an air compressor 601, a connecting pipe 602 is provided on one side of the air compressor 601, both ends of the connecting pipe 602 are rotatably connected with threaded connecting sleeves 603, an inflation hole 604 is opened on the top of the upper end cover 201, an inflation nozzle 605 is fixedly connected to the top of the upper end cover 201 corresponding to the inflation hole 604, and the outer surface of the inflation nozzle 605 is threadedly connected with a sealing cover 606.

[0050] Before placing the water hose 1 in water, connect the threaded connection sleeve 603 at one end of the connecting pipe 602 to the output end of the air compressor 601, then unscrew the sealing cover 606 on the inflation nozzle 605, and rotate the threaded connection sleeve 603 at the other end of the connecting pipe 602 to the outer surface of the inflation nozzle 605. When the water hose 1 is placed in the water, the air compressor 601 starts to transport air to the inside of the water hose 1 through the connecting pipe 602, so that the water hose 1 expands and becomes cylindrical in the water.

[0051] Through the above technical solution, 1. the water hose 1 can be placed vertically in the water through the floating component 3 and the counterweight component 4, and at the same time, the inflation component 6 can inflate the inside of the water hose 1. During the experiment, the transmitting device transmits the sound signal to the water hose 1. Since the air and water in the water hose 1 are two different media with different acoustic properties, the air in the water hose 1 can directly reflect the sound signal to the receiving device. The above arrangement enables the reflection simulation device to simulate the propagation process of the sound signal in real time without waiting for the complete sound signal to be received, thereby effectively solving the problem of time delay; 2. The air compressor 601 can transport air to the inside of the water hose 1 through the connecting pipe 602, so that the water hose 1 can expand under the action of air pressure and be in the water in a cylindrical shape. When the experiment is carried out, the air in the water hose 1 can directly transmit the sound signal emitted by the generating device. Since the water acoustic signal is directly reflected on the receiving device, the problem that the traditional method cannot accurately simulate the attenuation, reflection and transmission of the water acoustic signal after passing through the target in the real scene is solved. At the same time, the inflatable underwater sound reflection simulation device can simulate the propagation characteristics and target of the water acoustic signal by simulating the propagation characteristics and target of the water acoustic signal. The reflective characteristics of the target can be closer to the real working scene and provide more accurate simulation results; 3. By hanging the safety hook 504 on the upper connecting rope 302 inside the corresponding connecting ring 503, the through-core float 301 is pulled upward to the water hose 1 in the water through the stopper 303, the upper connecting rope 302, the safety hook 504, the connecting ring 503 and the upper end cover 201, and by hanging the safety hook 504 on the lower connecting rope 401 inside the corresponding connecting ring 503, the counterweight block 40 The water hose 1 in the water is pulled downward by the lower connecting rope 401, the safety hook 504, the connecting ring 503 and the lower end cover 202, and the through-hole float 301 and the counterweight block 402 allow the water hose 1 to be placed in any position in the hand for experiment, so that the inflatable underwater sound reflection simulation device can be applied to different experimental environments and underwater acoustic systems, thereby improving the flexibility and adaptability of the inflatable underwater sound reflection simulation device when conducting experiments, and effectively solving the problem of universal applicability of the inflatable underwater sound reflection simulation device.

[0052] Working principle:

[0053] Hang the safety hook 504 provided at the bottom end of the upper connecting rope 302 inside the connecting ring 503 provided at the top of the upper end cover 201, then hang the safety hook 504 provided at the top end of the lower connecting rope 401 inside the connecting ring 503 provided at the bottom of the lower end cover 202, and then connect the threaded connecting sleeves 603 at both ends of the connecting pipe 602 to the output end of the air compressor 601 and the inflation nozzle 605 respectively;

[0054] Next, the completed water hose 1 is placed directly at a suitable position in the water. At this time, the through-core float 301 pulls the water hose 1 in the water upward through the stopper 303, the upper connecting rope 302, the safety hook 504, the connecting ring 503 and the upper end cover 201, and the counterweight 402 pulls the water hose 1 in the water downward through the lower connecting rope 401, the safety hook 504, the connecting ring 503 and the lower end cover 202, so that the water hose 1 is vertically placed in the water.

[0055] Finally, the air compressor 601 is started, so that the air compressor 601 begins to transport air to the inside of the water hose 1 through the connecting pipe 602, and the water hose 1 expands under the action of air pressure and becomes cylindrical in the water.

[0056] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. An inflatable sound reflection simulation device, comprising a water belt (1), characterized in that: Both ends of the water hose (1) are provided with sealing components (2), the top end of the water hose (1) is provided with a floating component (3), the bottom end of the water hose (1) is provided with a counterweight component (4), the sealing component (2) is provided with a connecting component (5) corresponding to the floating component (3) and the counterweight component (4), and one side of the water hose (1) is provided with an inflatable component (6); The floating component (3) is used to pull the water hose (1) in the water upwards, the counterweight component (4) is used to drive the bottom end of the water hose (1) to move toward the bottom of the water so that the water hose (1) is vertically located in the water, and the inflation component (6) is used to inflate the water hose (1).

2. The inflatable sound reflection simulation device according to claim 1, characterized in that: The sealing assembly (2) comprises an upper end cover (201) and a lower end cover (202), wherein the upper end cover (201) and the lower end cover (202) are both sleeved inside the water hose (1), and the outer surfaces of the upper end cover (201) and the lower end cover (202) are both provided with a groove (203), and the outer surface of the water hose (1) is sleeved with a throat clamp (204) corresponding to the groove (203).

3. The inflatable sound reflection simulation device according to claim 2, characterized in that: The floating assembly (3) comprises a through-hole floating ball (301), an upper connecting rope (302) is arranged inside the through-hole floating ball (301), the top end of the upper connecting rope (302) passes through the through-hole floating ball (301) and is fixedly connected to a stopper (303), and the bottom end of the upper connecting rope (302) is arranged on the top of the upper end cover (201).

4. The inflatable sound reflection simulation device according to claim 3, characterized in that: The counterweight assembly (4) comprises a lower connecting rope (401), wherein the lower connecting rope (401) is arranged at the bottom of the lower end cover (202), and a counterweight block (402) is arranged at the lower end of the lower connecting rope (401).

5. The inflatable sound reflection simulation device according to claim 4, characterized in that: The connection assembly (5) comprises a threaded hole (501), wherein the threaded hole (501) is arranged at the top of the upper end cover (201) and the bottom of the lower end cover (202); a threaded rod (502) is connected to the inner thread of the threaded hole (501); a connecting ring (503) is fixedly connected to one end of the threaded rod (502); a safety hook (504) is arranged inside the connecting ring (503); two safety hooks (504) are connected to the corresponding upper connecting rope (302) and lower connecting rope (401); and a connecting sleeve (505) is arranged on the outer surface of the upper connecting rope (302) and the lower connecting rope (401).

6. The inflatable sound reflection simulation device according to claim 2, characterized in that: The inflation component (6) comprises an air compressor (601), a connecting pipe (602) is provided on one side of the air compressor (601), both ends of the connecting pipe (602) are rotatably connected with threaded connecting sleeves (603), an inflation hole (604) is opened on the top of the upper end cover (201), an inflation nozzle (605) is fixedly connected to the top of the upper end cover (201) corresponding to the inflation hole (604), and a sealing cover (606) is threadedly connected to the outer surface of the inflation nozzle (605).

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