Semi-physical simulation dry-type underwater acoustic signal experimental device and system
By designing a semi-physical simulated dry water acoustic signal experimental device and integrating sound source sound generator components, amplifier components and mold slots, the limitations of underwater acoustic sensor testing are solved, efficient and accurate testing is achieved in complex environments, reducing costs and improving testing efficiency.
Patent Information
- Application Number
- CN202422361577.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-27
AI Technical Summary
The existing technology is difficult to accurately test new underwater acoustic sensors in specific underwater environments, and simulation technology cannot effectively simulate complex environments and diversified sound source signals, resulting in high testing difficulties and high cost and unsatisfactory test results.
A semi-physical simulated dry-water acoustic signal experimental device is designed, including sound source sound generator components, amplifier components, transducers and mold slots, to simulate a specific underwater environment by integrating these key components to ensure signal transmission and data accuracy.
It reduces testing difficulty and cost, improves testing efficiency, and can provide accurate performance evaluation data in extreme environments, supporting the research and development and application of underwater acoustic sensors.
Smart Images
Figure CN223154380U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of underwater acoustic communication and simulation testing, and particularly relates to a semi-physical simulation dry underwater acoustic signal experimental device and system. Background Art
[0002] With the continuous progress of technology, modern underwater acoustic sensors show an increasingly diverse trend. When testing certain new types of underwater acoustic sensors, a specific underwater environment becomes a necessary condition. However, it is not easy to obtain such a specific underwater environment, and its limitations significantly increase the testing difficulty and cost of new sensors. More seriously, some extremely harsh underwater environmental conditions may even lead to unsatisfactory test data, thus affecting the accurate evaluation of sensor performance.
[0003] On the other hand, underwater acoustic sensors need to collect sound source signals with various different frequencies and amplitudes during the testing process. In theory, these tests should be carried out in an environment with no interfering sound source signals to ensure the accuracy of test results. However, in actual operation, there are a large number of uncertain factors in the underwater environment, such as power frequency signal interference, environmental noise, etc., which will inevitably interfere with the testing. This interference not only greatly reduces the testing efficiency but also further increases the cost of the testing experiment.
[0004] Therefore, the simulation of the acoustic testing environment and the sound source simulation are particularly important. Through simulation technology, the real underwater environment and sound source signals can be simulated to a certain extent, thus providing more convenient and controllable conditions for the testing of underwater acoustic sensors. However, the current simulation technology still needs to be improved. Especially in simulating complex underwater environments and diverse sound source signals, further research and improvement are still required. Summary of the Utility Model
[0005] (1) Technical Problems to be Solved
[0006] In view of the above-mentioned disadvantages and deficiencies of the prior art, the utility model provides a semi-physical simulation dry underwater acoustic signal experimental device and system, which solves the technical problems that the limitations and uncertainties of the real underwater environment lead to great difficulty and high cost in testing underwater acoustic sensors, and the existing simulation technology cannot fully meet the testing requirements of complex environments and diverse sound sources.
[0007] (2) Technical Solutions
[0008] To achieve the above object, the main technical solutions adopted by the utility model include:
[0009] In the first aspect, an embodiment of the utility model provides a semi-physical simulation dry underwater acoustic signal experimental device, including:
[0010] A sound source generating component, which is used to output a sound source signal;
[0011] A power amplifier component, which is used to receive and amplify the sound source signal input by the sound source generating component;
[0012] A transducer, which is used to receive the amplified sound source signal input by the power amplifier component, convert the amplified sound source signal from electrical energy into sound energy, and act on the underwater acoustic sensor to be measured; and,
[0013] A mold groove, which is used to accommodate the transducer and the underwater acoustic sensor, and rubber is provided in the mold groove.
[0014] Optionally, the sound source generating component includes:
[0015] An oscillator, which is used to generate different types of oscillation signals to obtain a sound source signal;
[0016] A sound output port, which is used to output the sound source signal to the power amplifier component.
[0017] Optionally, the power amplifier component includes:
[0018] An amplification receiving port, which is used to receive the sound source signal from the sound source generating component;
[0019] A power amplifier, which is used to amplify the received sound source signal to obtain an amplified sound source signal;
[0020] An amplification output port, which is used to output the amplified sound source signal to the transducer.
[0021] Optionally, the number of transducers and underwater acoustic sensors is at least one, and the transducers and underwater acoustic sensors correspond one by one.
[0022] Optionally, the mold groove includes:
[0023] A top cover, which is made of PVC material and is provided with a first mounting hole for fixing the transducer;
[0024] A base, which is made of PVC material and is provided with a second mounting hole for fixing the underwater acoustic sensor;
[0025] Wherein, when the transducer is installed in the first mounting hole and the underwater acoustic sensor is installed in the second mounting hole, the gap between the transducer and the underwater acoustic sensor is a preset distance that can be adjusted.
[0026] Optionally, the gap between the underwater acoustic sensor and the transducer is 18 - 22 mm.
[0027] Optionally, the density of the rubber material is 1.30 - 1.41 g / cm 3 .
[0028] Second aspect, an embodiment of the present utility model provides a semi-physical simulation dry underwater acoustic signal experimental system, including:
[0029] The semi-physical simulation dry underwater acoustic signal experimental device as described above;
[0030] The underwater acoustic sensor or underwater acoustic sensor array to be measured, which is installed in the mold groove of the semi-physical simulation dry underwater acoustic signal experimental device and is used to collect acoustic energy and convert it into an electrical signal;
[0031] An oscilloscope, which is used to display and record the electrical signals collected by the underwater acoustic sensor or underwater acoustic sensor array.
[0032] (III) Beneficial effects
[0033] The beneficial effects of the present utility model are as follows:
[0034] First of all, by integrating key components such as a sound source sound generation component, a power amplifier component, a transducer, and a mold groove, the device of the present utility model can simulate a specific underwater environment, thereby effectively overcoming the limitations faced by new underwater acoustic sensors in actual tests. This simulation function significantly reduces the test difficulty and cost, making the experimental process more convenient and fast.
[0035] Secondly, the device of the present utility model can accurately simulate the test data under a specific environment and its harsh conditions, ensuring the authenticity and reliability of the experimental results. This means that even in extreme or difficult-to-replicate field test environments, the device can provide accurate performance evaluation data, providing strong support for the research and application of underwater acoustic sensors.
[0036] In addition, the device of the present utility model also has wide applicability and can handle various different signal sources required to be collected during the test of underwater acoustic sensors. By reducing the harsh requirements for a specific sound source environment and reducing the uncertain factors existing in the actual environment, the device effectively improves the test efficiency and reduces the overall test cost.
[0037] Therefore, these above characteristics make the device have significant advantages and application prospects in underwater acoustic signal-related tests and experiments, providing strong technical support for the research and development in related fields. Description of the drawings
[0038] Figure 1 It is a schematic diagram of the composition of a semi-physical simulation dry underwater acoustic signal experimental device provided by an embodiment of the present utility model;
[0039] Figure 2 It is a schematic diagram of the composition of a semi-physical simulation dry underwater acoustic signal experimental system provided by an embodiment of the present utility model.
[0040]
Description of the Attached Drawing Reference Signs
[0041] 1: Sound source generating component;
[0042] 2: Power amplifier component;
[0043] 3: Mold groove;
[0044] 4: Transducer;
[0045] 5: Underwater acoustic sensor. Detailed Embodiment
[0046] In order to better explain the present utility model for easy understanding, the present utility model will be described in detail below in conjunction with the attached drawings through specific embodiments.
[0047] As Figure 1 shown, a semi-physical simulation dry underwater acoustic signal experimental device proposed in an embodiment of the present utility model includes: a sound source generating component 1 for outputting a sound source signal; a power amplifier component 2 for receiving and amplifying the sound source signal input by the sound source generating component 1; a transducer 4 for receiving the amplified sound source signal input by the power amplifier component 2, converting the amplified sound source signal from electrical energy into sound energy, and acting on the measured underwater acoustic sensor 5; and a mold groove 3 for accommodating the transducer 4 and the underwater acoustic sensor 5, and rubber is provided in the mold groove 3.
[0048] First of all, the device of the present utility model can simulate a specific underwater environment by integrating key components such as the sound source generating component 1, the power amplifier component 2, the transducer 4, and the mold groove 3, thereby effectively overcoming the limitations faced by the new underwater acoustic sensor 5 in actual tests. This simulation function significantly reduces the test difficulty and cost, making the experimental process more convenient and fast.
[0049] Secondly, the device of the present utility model can accurately simulate the test data under specific environments and their harsh conditions, ensuring the authenticity and reliability of the experimental results. This means that even in extreme or difficult-to-replicate field test environments, the device can provide accurate performance evaluation data, providing strong support for the research and application of the underwater acoustic sensor 5.
[0050] In addition, the device of the present utility model also has wide applicability and can handle various different signal sources required to be collected during the test of the underwater acoustic sensor 5. By reducing the harsh requirements for a specific sound source environment and reducing the uncertainty factors existing in the actual environment, the device effectively improves the test efficiency and reduces the overall test cost.
[0051] Therefore, these above characteristics make the device have significant advantages and application prospects in underwater acoustic signal-related tests and experiments, providing strong technical support for the research and development in related fields.
[0052] To better understand the above technical solution, exemplary embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a clearer and more thorough understanding of the present utility model and to fully convey the scope of the present utility model to those skilled in the art.
[0053] Specifically, the sound source sound generating component 1 includes: an oscillator for obtaining a sound source signal by generating different types of oscillation signals; and a sound output port for outputting the sound source signal to the power amplifier component 2.
[0054] The sound source sound generating component 1 is a key link in sound generation and transmission. It is usually composed of several core parts that work together to generate and output the required sound signal. Specifically, this component includes an oscillator and a sound output port.
[0055] As the starting point of the sound source sound generating component 1, the oscillator undertakes the important task of generating different types of oscillation signals. These signals can be simple sine waves or complex modulated waves, and their characteristics depend on the settings and parameter adjustments of the oscillator.
[0056] The sound output port is responsible for outputting the sound source signal to the power amplifier component 2. It usually relies on professional connection lines and interfaces, such as BNC cables, to be compatible with various different types of power amplifier components 2.
[0057] Next, the power amplifier component 2 includes: an amplification receiving port for receiving the sound source signal from the sound source sound generating component 1; a power amplifier for amplifying the received sound source signal to obtain a sound source amplified signal; and an amplification output port for outputting the sound source amplified signal to the transducer 4.
[0058] The power amplifier component 2 receives the sound source signal through its amplification receiving port, then performs an equal ratio amplification process through the power amplifier, and finally transmits the sound source amplified signal to the transducer 4 through the amplification output port, thereby completing the conversion of electrical energy to sound energy. Due to considerations of power, impedance, distortion, dynamics, as well as different usage ranges and control adjustment functions, the power amplifier is in a cut-off state and does not consume power when there is no signal input. During operation, the input signal causes the transistors of the power amplifier to enter the saturation state. The transistors are equivalent to a closed switch, directly connecting the power supply and the load. Ideal transistors do not consume power because there is no saturation voltage drop. In fact, transistors always have a very small saturation voltage drop and consume some electrical energy.
[0059] This power consumption is only related to the characteristics of the transistor and has nothing to do with the magnitude of the signal output. Therefore, it is particularly beneficial for occasions with ultra-high power, converting weak electro-acoustic signals into powerful power energy for voltage and current amplification, with the aim of enabling the transducer 4 to complete the final conversion of electrical energy into sound energy.
[0060] The transducer 4 is a key link in the process of sound reproduction or sound acquisition. As a contact core, it efficiently converts electrical energy into sound energy through the signal input by the power amplifier. In underwater acoustic applications, the transducer 4 directly interacts with the underwater acoustic sensor 5 and is responsible for collecting and converting sound signals.
[0061] The main performance indicators of the transducer 4 include operating frequency, bandwidth, electro-acoustic conversion efficiency, etc. These parameters determine the performance and application range of the transducer 4. During operation, the resonant frequency and impedance at resonance of the transducer 4 are also important considerations, which affect the working efficiency and stability of the transducer 4. At the same time, directivity (i.e., the emission beam width) and sensitivity are also important indicators for evaluating the performance of the transducer 4, which determine the sound propagation effect and sound reception sensitivity of the transducer 4 in different directions.
[0062] The transducer 4 is often manufactured using specific materials with the piezomagnetic effect and piezoelectric effect, such as dielectric materials like barium titanate ceramics and lead zirconate titanate ceramics. These materials can generate deformation under the action of an electric field, thus realizing the conversion between electrical energy and sound energy.
[0063] In practical applications, the transducer 4 usually includes devices such as speakers. As the terminal for sound output, they convert the amplified electrical signal into audible sound, realizing sound reproduction or broadcasting. In the field of underwater acoustics, this conversion is particularly important because the sound propagation characteristics underwater are significantly different from those in the air, and the transducer 4 needs to have higher sensitivity and stability.
[0064] It should be emphasized that the number of both the transducer 4 and the underwater acoustic sensor 5 is at least one, and the transducer 4 and the underwater acoustic sensor 5 are in one-to-one correspondence.
[0065] When constructing a semi-physical simulation dry underwater acoustic signal experimental device, the number configuration of the transducer 4 and the underwater acoustic sensor 5 has specific requirements. Each underwater acoustic sensor 5 should correspond to at least one transducer 4 to ensure accurate signal acquisition and conversion. This one-to-one correspondence is the basis for system design and operation, which simulates that sound signals can be effectively transmitted from the underwater environment into the underwater acoustic sensor 5, and then realizes sound acquisition and recording.
[0066] Furthermore, the mold groove 3 includes: a top cover made of PVC material, provided with a first mounting hole for fixing the transducer 4; a base made of PVC material, and provided with a second mounting hole for fixing the underwater acoustic sensor 5; wherein, when the transducer 4 is installed in the first mounting hole and the underwater acoustic sensor 5 is installed in the second mounting hole, the gap between the transducer 4 and the underwater acoustic sensor is a preset adjustable distance.
[0067] To maximize the restoration of the underwater environment, the mold groove 3 is designed with specific materials and structures. First, the inside of the mold groove 3 is filled with saturated rubber. The density of this material is between 1.30 and 1.41 g / cm 3 which is very close to the density of water, thus effectively simulating the underwater acoustic conditions.
[0068] Below the mold groove 3, an underwater acoustic sensor 5 or an array of underwater acoustic sensors is installed. There is an exact gap between these sensors and the transducer 4 above, which is 20 mm by default. The design of this gap is to ensure that sound signals can be transmitted efficiently and accurately between the underwater acoustic sensor 5 and the transducer 4. At the same time, this gap is adjustable and can be adjusted by separating it in the middle, with a range between 18 and 22 mm to adapt to different test or application requirements.
[0069] The transducer 4 is placed in the upper cover shell of the mold made of PVC (polyvinyl chloride) material. PVC is a common polymer material, and its molecular chain structure gives it a certain degree of flexibility and durability. Although PVC may have problems with heat distortion and poor aging resistance under certain conditions, these disadvantages can be effectively eliminated through cross-linking treatment.
[0070] The lower base of the mold is also made of PVC material and reserved with mounting holes for the underwater acoustic sensor 5 or an array of underwater acoustic sensors. The design of these holes not only facilitates the installation of the sensors but also ensures the relative position accuracy between the sensors and the transducer 4. The inside of the base is also filled with saturated rubber to further enhance the effect of simulating the underwater environment.
[0071] In a second aspect, an embodiment of the present invention provides a semi-physical simulation dry underwater acoustic signal experimental system, including: the semi-physical simulation dry underwater acoustic signal experimental device as described above. The underwater acoustic sensor 5 or an array of underwater acoustic sensors to be measured is installed in the mold groove 3 of the semi-physical simulation dry underwater acoustic signal experimental device for collecting acoustic energy and converting it into an electrical signal. An oscilloscope for displaying and recording the electrical signals collected by the underwater acoustic sensor 5 or an array of underwater acoustic sensors.
[0072] In another specific embodiment, a complete semi-physical simulation dry underwater acoustic signal experimental system is constructed, asFigure 2 As shown in the figure, the system mainly consists of the following core components: NIDAC signal output card (as the sound source generating component 1), power supply, power amplifier small board (i.e., power amplifier component 2), loudspeaker (as the transducer 4), four-channel underwater acoustic sensor, and oscilloscope. Among them, the NIDAC signal output card (as the sound source generating component 1), power supply, power amplifier small board (i.e., power amplifier component 2), loudspeaker (as the transducer 4), and four-channel underwater acoustic sensor can all be arranged in the mold groove 3.
[0073] In terms of the test principle, a signal transmission and conversion path is designed. Specifically, the signal is output by the NIDAC output card, which is a key sound source generating component 1 responsible for generating the initial electrical signal. This signal then undergoes equal-ratio amplification by the power amplifier small board, which plays a crucial role here in ensuring that the signal can drive the subsequent transducer 4 with sufficient intensity. The amplified signal is output to the loudspeaker, which, as the transducer 4, converts the electrical signal into sound energy and emits sound through vibration. This sound signal is further transmitted to the four-channel underwater acoustic sensor through the filled rubber medium and PVC mold of the mold groove 3, and the four-channel underwater acoustic sensor is responsible for converting the received sound signal back into an electrical signal. Finally, the output signal of the four-channel underwater acoustic sensor is connected to the oscilloscope for display and analysis.
[0074] During the test process, the NIDAC signal output card outputs a sine signal with a frequency of 1000 Hz in four-channel synchronization and ensures that the phase between each channel is consistent, which is to ensure the accuracy and consistency of the signal. Then, connect the power supply of the power amplifier small board, connect the signal input port to the signal output of the NIDAC signal output card, and at the same time connect the signal output port to the loudspeaker, thus completing the entire process of signal generation and amplification. Subsequently, connect the power supply of the four-channel underwater acoustic sensor and install it in the mold groove 3, ensuring that the top of the sensor is in close contact with the loudspeaker, which is to minimize the signal loss during transmission. Finally, connect the signal output of the four-channel underwater acoustic sensor to the acquisition channel of the oscilloscope, and use the powerful acquisition and analysis functions of the oscilloscope to comprehensively record and process the data of the four-channel underwater acoustic sensor.
[0075] Since the system / device described in the above embodiments of the present utility model is the system / device adopted for implementing the method of the above embodiments of the present utility model, based on the method described in the above embodiments of the present utility model, those skilled in the art can understand the specific structure and deformation of the system / device, and thus will not be elaborated here. All systems / devices adopted by the method of the above embodiments of the present utility model fall within the scope of protection of the present utility model.
[0076] Those skilled in the art should understand that the embodiments of the present utility model can be provided as methods, systems or computer program products. Therefore, the present utility model can adopt the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present utility model can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk memories, CD-ROMs, optical memories, etc.) containing computer-usable program codes.
[0077] The present utility model is described with reference to the flowcharts and / or block diagrams of methods, apparatuses (systems) and computer program products according to the embodiments of the present utility model. It should be understood that each flow and / or block in the flowchart and / or block diagram can be implemented by computer program instructions, and the combination of flows and / or blocks in the flowchart and / or block diagram can also be implemented by computer program instructions.
[0078] It should be noted that in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of components or steps not listed in the claim. The word "a" or "an" preceding a component does not exclude the presence of a plurality of such components. The present utility model can be implemented by means of hardware including several different components and by means of a suitably programmed computer. In the claims listing several devices, several of these devices can be embodied by the same piece of hardware. The use of the words first, second, third, etc. is only for convenience of description and does not denote any order. These words can be understood as part of the component name.
[0079] In addition, it should be noted that in the description of this specification, the descriptions of terms such as "one embodiment", "some embodiments", "embodiments", "examples", "specific examples" or "some examples" mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.
[0080] Although the preferred embodiments of the present utility model have been described, those skilled in the art can make additional changes and modifications after learning the basic creative concept. Therefore, the claims should be construed to include the preferred embodiments and all changes and modifications falling within the scope of the present utility model.
[0081] Obviously, those skilled in the art can make various modifications and variations to the present utility model without departing from the spirit and scope of the present utility model. Thus, if these modifications and variations of the present utility model fall within the scope of the claims of the present utility model and its equivalent technologies, the present utility model should also cover these modifications and variations.
Claims
1. A semi-physical simulation dry underwater acoustic signal experimental device, characterized in that Comprising: A sound source generating component for outputting a sound source signal; A power amplifier component for receiving and amplifying the sound source signal input by the sound source generating component; A transducer for receiving the amplified sound source signal input by the power amplifier component, converting the amplified sound source signal from electrical energy into acoustic energy, and acting on the underwater acoustic sensor to be measured; And A mold groove for accommodating the transducer and the underwater acoustic sensor, and rubber is provided in the mold groove; the mold groove includes: a top cover made of PVC material, provided with a first mounting hole for fixing the transducer; a bottom base made of PVC material, and provided with a second mounting hole for fixing the underwater acoustic sensor; wherein, when the transducer is mounted in the first mounting hole and the underwater acoustic sensor is mounted in the second mounting hole, the gap between the transducer and the underwater acoustic sensor is a preset distance that can be adjusted.
2. The semi-physical simulation dry underwater acoustic signal experimental device according to claim 1, characterized in that, The sound source generating component includes: An oscillator for obtaining a sound source signal by generating different types of oscillation signals; A sound output port for outputting the sound source signal to the power amplifier component.
3. The semi-physical simulation dry underwater acoustic signal experimental device according to claim 1, characterized in that The power amplifier component includes: An amplification receiving port for receiving the sound source signal from the sound source generating component; A power amplifier for amplifying the received sound source signal to obtain an amplified sound source signal; An amplification output port for outputting the amplified sound source signal to the transducer.
4. The semi-physical simulation dry underwater acoustic signal experimental device according to claim 1, characterized in that The number of the transducers and the underwater acoustic sensors is at least one, and the transducers and the underwater acoustic sensors are in one-to-one correspondence.
5. The semi-physical simulation dry underwater acoustic signal experimental device according to claim 1, characterized in that, The gap between the underwater acoustic sensor and the transducer is 18 - 22 mm.
6. The semi-physical simulation dry underwater acoustic signal experimental device according to any one of claims 1-4, characterized in that, The density of the rubber material is 1.30 - 1.41 g / cm 3 .
7. A hardware-in-the-loop simulation dry underwater acoustic signal experimental system, characterized in that, Comprising: The semi-physical simulation dry underwater acoustic signal experimental device according to any one of claims 1 - 6; The underwater acoustic sensor or underwater acoustic sensor array to be measured, mounted in the mold groove of the semi-physical simulation dry underwater acoustic signal experimental device, for collecting acoustic energy and converting it into an electrical signal; An oscilloscope for displaying and recording the electrical signal collected by the underwater acoustic sensor or underwater acoustic sensor array.