A strong voice method
Through the elastic deformation and release structure of the spherical flat shell, the problem of limited pulse pulse width in the prior art is solved, and the sound is continuously high-sound pressure is achieved, and the impact effect on the target is improved.
Patent Information
- Application Number
- CN202311253967.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-09-27
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2043-09-27
AI Technical Summary
The pulse sound produced by the existing pulse strong sound technology is only a single pulse, and the pulse width is limited, resulting in insufficient dose of sound pressure squared and time, and poor impact effect.
The spherical flat shell is used to deform and recess inward by applying pressure or tension, and generates multiple continuous strong sound pulses when releasing pressure or tension. The shell is continuously vibrated by using high elastic materials and support structures to generate continuous strong sound. pulse.
It realizes the continuous issuance of multiple strong sound pulses, which improves the duration of sound pressure and the product of sound pressure squared with time, and enhances the impact on the target.
Smart Images
Figure CN117255294B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of acoustic sound generation, and in particular to a strong sound generation method. Background Art
[0002] The existing pulse sound is produced by gas (gas cannon or atomized oil explosion) detonation method, shock wave generator method, or air burst bomb method. Their common disadvantage is that the pulse sound generated is a single pulse with a pulse width of only about 1ms. Although the pulse intensity can reach 174dB@1m, the product of the square of the sound pressure and the time is limited to a sound dose, and the impact effect on the target is poor. Summary of the invention
[0003] The purpose of the present invention is to overcome the defects of the prior art and to provide a method for producing strong sound which can continuously produce a plurality of strong sound pulses.
[0004] In order to achieve the above object, one aspect of the present invention provides a method for producing a strong sound, comprising:
[0005] Potential accumulation step: along the shell axis of the spherical flat shell, apply pressure or tension to the center of the arc-shaped shell top of the flat shell, so that the shell top is deformed and concave inward, and the center of the shell top is turned inward in the arc, so that the flat shell is kept in a ready state before the critical state of imbalance, wherein the ready state refers to a state in which the flat shell is in an elastic deformation state and can rebound autonomously after the pressure or tension is released, and the critical state of imbalance refers to a state in which the flat shell is pressed or pulled to the point of being completely turned over and cannot rebound even if the pressure or tension is released;
[0006] Emission steps: release the pressure or tension to make the shell top rebound, and reach the highest speed at the moment of the shell top flipping, thereby generating vibration. The shell is stretched thin, and the central surface rushes forward to generate the first strong sound pulse. When the shell top retracts, the shell surface becomes fatter and generates the second strong sound pulse, thereby generating multiple continuous strong sound pulses.
[0007] The spherical oblate shell is made of a highly elastic material, the elastic modulus is greater than 100 GPa, and the ratio of the curvature diameter to the thickness is greater than 200;
[0008] A support is provided at the lower edge of the spherical oblate shell, and the support is used to fix or suspend the spherical oblate shell so that the spherical oblate shell can continue to vibrate after rebounding.
[0009] Preferably, in the step of accumulating potential, a pre-compression hammer is used to press down so that the shell top is deformed and concave inwardly, and the pre-compression hammer is a spherical hammer with a concave top to form a torus surface in contact with the shell top of the flat shell; the pre-compression hammer acts on the shell top of the flat shell, and under the action of pressure, pushes the flat shell to be concave inwardly of the arc, and causes the center of the shell top to flip inwardly of the arc;
[0010] In the firing step, the pressure of the pre-compression hammer is released to allow the shell top to rebound.
[0011] Preferably, the pre-pressing hammer contacts the flat shell through the annular surface of the hammer top, and the spherical hammer surface is kept in contact with the flat shell surface during the downward pressing process to avoid wrinkles on the flat shell.
[0012] Preferably, in the charging step, a pull rod with an electromagnet on the top is driven, so that the electromagnet sucks the top of the flat shell and pulls the pull rod downward, causing the shell top to deform and concave inward to a ready-to-fire state; in the launching step, the flat shell is released by disconnecting the power supply of the electromagnet, and the sound wave radiation surface of the strong sound pulse generated by the flat shell is a convex spherical surface.
[0013] Preferably, in the accumulation step, a pull rod with an electromagnet on the top is driven, so that the electromagnet sucks the top of the flat shell and pulls the pull rod upward, thereby pulling the flat shell into a pre-stressed state; in the emission step, the flat shell is released by disconnecting the power supply of the electromagnet, and the sound wave radiation surface of the strong sound pulse generated by the flat shell is a concave spherical surface.
[0014] Preferably, before the potential accumulation step, the method further comprises:
[0015] A spherical flat shell is placed in a sound-generating cavity, which is divided into a front cavity and a rear cavity. An inverted tube is arranged outside the sound-generating cavity, and the inverted tube is used to invert the sound waves of the rear cavity and superimpose them with the sound waves of the front cavity.
[0016] Preferably, the high elastic material of the spherical oblate shell is spring steel or copper.
[0017] Preferably, the ratio of the curvature diameter to the thickness of the spherical oblate shell is 1000.
[0018] The strong sound emitting method according to the above aspect of the present invention can continuously emit a plurality of strong sound pulses. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings used in the description of the embodiments of the present invention. Obviously, the drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0020] Figure 1 is a schematic diagram of a strong sound emitting method according to Embodiment 1 of the present invention;
[0021] Figure 2 is a schematic diagram of a strong sound emitting method according to Embodiment 2 of the present invention;
[0022] Figure 3 Schematic diagram of the strong sound emitting method according to Embodiment 3 of the present invention. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. 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.
[0024] The embodiment of the present invention provides a method for producing strong sound, which uses a spherical flat shell to continuously produce multiple strong sound pulses. The spherical flat shell is a spherical shell made of a high elastic material, with an elastic modulus greater than 100 GPa, typically spring steel and copper, and the greater the elastic modulus, the higher the sound pressure emitted; the ratio of the curvature diameter to the thickness of the spherical flat shell D / t≥200, and the typical value is 1000.
[0025] The strong sound generation method of the embodiment of the present invention includes a potential accumulation step and a launch step. In the potential accumulation step, pressure or tension is applied to the center of the arc-shaped shell top of the spherical flat shell along the shell axis of the flat shell, so that the shell top is deformed and concave inward, and the center of the shell top is turned inwardly, so that the flat shell is kept in the ready state before the critical state of imbalance. In the ready state, the spherical flat shell is in an elastic deformation state, the spherical surface of the flat shell is concave to a certain extent and is stationary, and can rebound autonomously after the pressure or tension is released. The critical state of imbalance refers to the state when the flat shell is pressed or pulled to the point of being completely turned over, and cannot rebound even if the pressure or tension is released.
[0026] Then, in the emission step, the pressure or tension is released, causing the shell top to rebound, and at the moment when the center of the shell top flips, the shell reaches the highest speed and generates vibration, the shell is stretched thin, the central surface rushes forward and generates the first strong sound pulse, and when the shell top retracts, the shell surface expands and generates the second strong sound pulse, and then generates multiple continuous strong sound pulses. In this step, the spherical surface of the flat shell is in a free rebound state, and the spherical surface continues to accelerate and recover until the center of the shell top flips, and the shell spherical surface repeatedly oscillates and sounds.
[0027] In addition, a support is provided at the lower edge of the spherical oblate shell, and the support is used to fix or suspend the spherical oblate shell so that the spherical oblate shell can continue to vibrate after rebounding.
[0028] The strong sound emitting method according to the embodiment of the present invention is described in detail below with reference to the accompanying drawings and examples.
[0029] Example 1
[0030] Figure 1 Schematic diagram of the strong sound emitting method according to Embodiment 1 of the present invention. Figure 1In the embodiment, 1 is a spherical flat shell, 2 is a pre-compression hammer, and 3 is a support. In the accumulation step, the pre-compression hammer 2 is used to press down so that the shell top is deformed and concave inward. In the launching step, the pressure of the pre-compression hammer 2 is released to make the shell top rebound.
[0031] Specifically, the pre-compression hammer 2 is used to press the center of the shell top of the spherical flat shell 1 along the shell axis, and the support 3 is located at the bottom edge of the spherical flat shell 1. The pre-compression hammer 2 applies pressure F to the spherical flat shell 1, causing the shell top to deform and concave inward. The greater the pressure, the deeper the concave. When the pre-compression hammer 2 is released, the shell top recovers and continuously accelerates and rebounds, and reaches the highest speed at the moment of the center of the shell top turning over, thereby generating vibration. The shell is stretched thin and the central surface rushes forward to generate the first strong sound pulse ( Figure 1 The X direction of the XY coordinate system indicates the direction of the strong sound. When the shell top retracts, the shell surface expands again and generates a second strong sound pulse. After that, this elastic process continues to develop, and then multiple continuous strong sound pulses are generated. Since the radiation area of the flat shell is large, the sound waves radiated into the air are strong.
[0032] In this embodiment, the pre-stressing hammer 2 used is a spherical hammer slightly softer than the spherical flat shell 1, and the top of the hammer has a depression, forming a torus surface in contact with the flat shell surface of the spherical flat shell 1. The pre-stressing hammer 2 acts on the top of the spherical flat shell 1, and under the action of pressure, pushes the spherical flat shell 1 to be concave inwardly of the arc, and causes the center of the top to flip inwardly of the arc. The pre-stressing hammer 2 contacts the spherical flat shell 1 through the torus surface at its top, and keeps its spherical hammer surface in contact with the spherical flat shell 1 during the downward pressing process, so as to prevent wrinkles from appearing on the spherical flat shell 1.
[0033] The support 3 is provided at the lower edge of the spherical oblate shell 1, and the support 3 is connected to the spherical oblate shell 1 without interruption, and is used to install, fix or suspend the spherical oblate shell 1, so that the spherical oblate shell 1 can continue to vibrate after rebounding. The rebound of the spherical oblate shell 1 is continuous for multiple times, and the sound intensity is greater when the surface area is larger.
[0034] Example 2
[0035] Figure 2 Schematic diagram of the strong sound emitting method according to Embodiment 2 of the present invention. Figure 2 In the embodiment, the spherical flat shell 1 is placed in the sound cavity 11, and the sound cavity 11 is divided into a front cavity 13 and a rear cavity 14. A phase inversion tube 12 is arranged outside the sound cavity 11, and the phase inversion tube 12 connects the rear cavity 14 with the speaker opening (sound cavity opening) 17, and inverts the sound of the rear cavity 14 and radiates the forward sound wave ( Figure 2The superposition of the first electromagnet 4 and the second electromagnet 4 (shown by the middle arrow) can enhance the emitted sound waves and form two pulse sounds in one emission. In this embodiment, in the potential accumulation step, the pull rod 15 with the first electromagnet 4 on the top is driven by the driving wheel 16, and the electromagnet 4 sucks the shell top of the spherical flat shell 1 and pulls it down, so that the shell top is deformed and concave inward, and the center of the shell top is turned inward in the arc, so that the spherical flat shell 1 is kept in the ready-to-fire state before the critical state of imbalance. In the emission step, the spherical flat shell 1 is released by disconnecting the power supply of the electromagnet, so that the spherical flat shell 1 is in the emission state. In the emission state, the flat shell rebounds under the action of stress, and the rebound speed is getting faster and faster. When it reaches the top and turns over, it emits a strong pulse sound, and then the flat shell top oscillates repeatedly, so that a continuous pulse train sound is obtained, and its sound wave radiation surface is a convex spherical surface, and the spherical flat shell 1 is a sounding back cavity. The sound waves in the back cavity are fed back to the front speaker opening 17 through the inverted tube 12, and there is a certain time delay, which is superimposed with the high sounding of the front cavity, not only enhancing the sound, but also increasing the number of pulses.
[0036] Example 3
[0037] Figure 3 Schematic diagram of the strong sound emitting method according to Embodiment 3 of the present invention. Figure 3 In the embodiment of the present invention, similar to the embodiment 2, the spherical flat shell 1 is placed in the sound cavity 11, the sound cavity 11 is divided into a front cavity 13 and a rear cavity 14, and a reversing tube 12 is arranged outside the sound cavity 11. The reversing tube 12 connects the rear cavity 14 with the speaker opening (sound cavity opening) 17, and reverses the sound of the rear cavity 14 and radiates the forward sound wave ( Figure 3 The superposition of the two electromagnets (shown by the arrow in the middle) can enhance the emitted sound waves and form two pulse sounds in one emission. In this embodiment, in the potential accumulation step, the pull rod 15 with the second electromagnet 5 on the top is driven by the driving wheel 16. The second electromagnet 5 has a strong magnetic end face. The second electromagnet 5 attracts the shell top of the spherical flat shell 1 and pulls it upward, so that the shell top is deformed and concave inward, and the center of the shell top is turned inward in the arc, so that the spherical flat shell 1 is kept in the ready state before the unbalanced critical state. In the emission step, the spherical flat shell 1 is released by disconnecting the power supply of the electromagnet, so that the spherical flat shell 1 is in the emission state. Thereafter, the flat shell rebounds under the action of stress, and the rebound speed becomes faster and faster. When it reaches the top and turns over, it emits a strong pulse sound, and then the top of the flat shell oscillates repeatedly for many times, so that a continuous pulse train sound is obtained, and its sound wave radiation surface is a concave spherical surface, which has a higher sound radiation efficiency than a convex spherical surface. Under the flat shell spherical surface is the sound-generating rear cavity, and the sound waves in the rear cavity are fed back into the front speaker opening 17 through the bass reflex tube 12 with a certain time delay, which is superimposed with the front high sound, not only enhancing the sound, but also increasing the number of pulses.
[0038] Compared with the prior art, the strong sound emitting method of the above embodiment of the present invention has the following advantages:
[0039] 1. The present invention adopts flat shell vibration to generate sound, which can achieve high sound pressure and continuous sound generation, thus improving the effect of strong sound on the target;
[0040] 2. The present invention adopts a relatively large area of highly elastic flat shell, that is, the curvature diameter and thickness D / t≥200, and the sound radiation efficiency is high;
[0041] 3. The present invention adopts the structural characteristics of the flat shell to produce sound, without any flammable materials or scattered objects, and has high safety;
[0042] 4. The present invention adopts a flat shell to produce sound, which has a simple structure and low power consumption;
[0043] 5. The flat shell used in the present invention can be reused for sound generation.
[0044] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.
Claims
1. A method for producing a strong sound, characterized in that: include: Accumulation step: along the shell axis of the spherical flat shell, apply pressure or tension to the center of the arc-shaped shell top of the flat shell, so that the shell top is deformed and concave inward, and the center of the shell top is turned inward in the arc, so that the flat shell is kept in a ready state before the critical state of imbalance, wherein the ready state refers to a state in which the flat shell is in an elastic deformation state and can rebound autonomously after the pressure or tension is released, and the critical state of imbalance refers to a state in which the flat shell is pressed or pulled to the point of being completely turned over and cannot rebound even if the pressure or tension is released; Emission steps: release the pressure or tension to make the shell top rebound, and reach the highest speed at the moment of the shell top flipping, thereby generating vibration. The shell is stretched thin, and the central surface rushes forward to generate the first strong sound pulse. When the shell top retracts, the shell surface becomes fatter and generates the second strong sound pulse, thereby generating multiple continuous strong sound pulses. The spherical oblate shell is made of a highly elastic material, the elastic modulus is greater than 100 GPa, and the ratio of the curvature diameter to the thickness is greater than 200; A support is provided at the lower edge of the spherical oblate shell, and the support is used to fix or suspend the spherical oblate shell so that the spherical oblate shell can continue to vibrate after rebounding.
2. The method according to claim 1, characterized in that In the step of accumulating potential, a pre-compression hammer is used to press down so that the shell top is deformed and concave inwards. The pre-compression hammer is a spherical hammer with a concave top to form a torus surface in contact with the shell top of the flat shell. The pre-compression hammer acts on the shell top of the flat shell and pushes the flat shell to be concave inwards of the arc under the action of pressure, and causes the center of the shell top to flip inwards of the arc. In the firing step, the pressure of the pre-compression hammer is released to allow the shell top to rebound.
3. The method according to claim 2, characterized in that The pre-pressing hammer contacts the flat shell through the annular surface of the hammer top, and the spherical hammer surface is kept in contact with the flat shell surface during the downward pressing process, so as to avoid wrinkles on the flat shell.
4. The method according to claim 1, characterized in that: In the accumulating step, the pull rod with an electromagnet on the top is driven, so that the electromagnet attracts the top of the flat shell and pulls the pull rod downward, causing the shell top to deform and concave inward to the ready-to-fire state; in the launching step, the flat shell is released by disconnecting the power supply of the electromagnet, and the sound wave radiation surface of the strong sound pulse generated by the flat shell is a convex spherical surface.
5. The method according to claim 1, characterized in that In the accumulation step, the pull rod with an electromagnet on the top is driven, the electromagnet sucks the top of the flat shell and pulls the pull rod upward, so that the flat shell is concave to a pre-compression state; in the emission step, the flat shell is released by disconnecting the power supply of the electromagnet, and the sound wave radiation surface of the strong sound pulse generated by the flat shell is a concave spherical surface.
6. The method according to claim 4 or 5, characterized in that: Before the step of accumulating potential, the method further comprises: A spherical flat shell is placed in a sound-generating cavity, which is divided into a front cavity and a rear cavity. An inverted tube is arranged outside the sound-generating cavity, and the inverted tube is used to invert the sound waves of the rear cavity and superimpose them with the sound waves of the front cavity.
7. The method according to any one of claims 1 to 5, characterized in that The high elastic material of the spherical flat shell is spring steel or copper.
8. The method according to any one of claims 1 to 5, characterized in that The ratio of the curvature diameter to the thickness of the spherical oblate shell is 1000.