A vibration-to-image displacement amplifier

Abstract

The present invention discloses a vibration-to-image displacement amplifier, comprising: a housing, an image generation module, and a vibrating diaphragm, wherein the image generation module is connected to the vibrating diaphragm and both are located inside the housing; the image generation module is composed of a thin sheet-like moving diaphragm and a stationary diaphragm, wherein the moving diaphragm slides relative to one side of the stationary diaphragm; a support rod is provided at one end of the moving diaphragm for connection to the vibrating diaphragm; small through holes and large through holes are respectively provided on the moving diaphragm and the stationary diaphragm, wherein the small through holes on the moving diaphragm are spaced at the same center distance from adjacent small through holes, and the large through holes on the stationary diaphragm are spaced at the same center distance from adjacent large through holes. The present invention utilizes an image motion mode to amplify vibration signals, circumventing the shortcomings of traditional electrical vibration measurement methods and providing a new approach to vibration detection.

Description

Technical Field

[0001] The present invention relates to the field of vibration signal detection, and in particular to a vibration-to-image displacement amplifier. Background Art

[0002] Traditional methods for detecting vibration signals often convert the displacement of a vibrating component into electrical changes in electrical components such as piezoelectric ceramics, capacitors, and resistors. While these methods can achieve high accuracy for detecting conventional vibrations, their limitations become particularly pronounced when detecting analog signals, such as low-frequency or ultra-high-frequency vibrations. Due to the limited anti-interference capabilities and resolution of electrical components, weak or high-frequency signals inevitably suffer from distortion and difficulty in detection.

[0003] On the other hand, traditional solutions for determining the direction of signal propagation rely on a combination of several electrical components. For example, underwater sonar detection systems employ a combination of pressure sensors and inertial sensors. This approach is cumbersome, unreliable, expensive, and has high technical barriers. Therefore, developing a novel vibration sensing mechanism that doesn't rely on electrical components is highly valuable. Summary of the Invention

[0004] The present invention provides a vibration-to-image displacement amplifier. The present invention utilizes the motion of an image to amplify the vibration signal, bypassing the shortcomings of traditional electrical vibration measurement methods and providing a new approach to vibration detection. Detailed description is provided below:

[0005] A vibration-to-image displacement amplifier comprises: a housing, an image generation module, and a vibration diaphragm, wherein the image generation module and the vibration diaphragm are connected and are both located inside the housing;

[0006] The image generation module consists of a thin moving diaphragm and a stationary diaphragm. The moving diaphragm slides against one side of the stationary diaphragm. A support rod is provided at one end of the moving diaphragm for connecting to the vibrating diaphragm.

[0007] The moving diaphragm and the stationary diaphragm are respectively provided with small through holes and large through holes. The small through holes on the moving diaphragm have the same center distance with adjacent small through holes, and the large through holes on the stationary diaphragm have the same center distance with adjacent large through holes.

[0008] The ratio of the spacing between adjacent large through holes in the transverse direction to the spacing between adjacent small through holes in the transverse direction is the same as the ratio of the spacing between adjacent large through holes in the longitudinal direction to the spacing between adjacent small through holes in the longitudinal direction.

[0009] Furthermore, the edge shapes of the small through holes and the large through holes include circular holes and polygonal holes, and the distribution rules of the small through holes and the large through holes in the moving diaphragm and the stationary diaphragm are the same.

[0010] Among them, the moving diaphragm and the stationary diaphragm are placed overlapping to form overlapping circular holes.

[0011] The overlapping circular holes are concentric circles with the brightest in the middle and gradually decreasing brightness towards the edges. The horizontal spacing of the overlapping circular holes is the least common multiple of the horizontal large hole spacing and the horizontal small hole spacing, and the vertical spacing of the overlapping circular holes is the least common multiple of the vertical large hole spacing and the vertical small hole spacing.

[0012] Wherein, the shell is provided with a first chamber, a second chamber, a via hole and a base;

[0013] The first chamber and the second chamber are connected through a via. The base is located at the bottom of the second chamber and is used to fix the stationary diaphragm on the image generation module. The via is used to pass the support rod on the moving diaphragm through the first chamber and connect it to the vibrating diaphragm.

[0014] The displacement of the vibrating diaphragm is transmitted to the moving diaphragm through the support rod, and the movement of the moving diaphragm is amplified in the form of the movement of the overlapping circular holes. The amplification factor is obtained by the following formula:

[0015] s=(n+1)k

[0016] Among them, s is the moving distance of the overlapping circular holes, n is the distance between the small holes, and k is the moving distance of the moving diaphragm.

[0017] The beneficial effects of the technical solution provided by the present invention are:

[0018] 1. The present invention is based on the principle of amplifying displacement through the relative motion of two perforated diaphragms, achieving the purpose of amplifying vibration signals and avoiding the various limitations of traditional electrical vibration measurement methods.

[0019] 2. The amplification principle of the present invention is realized by mechanical means, which is convenient for use in situations where there is no power consumption or in situations where pressure changes of gases or liquids that are flammable or explosive and may cause electric shock are monitored;

[0020] 3. The principle adopted by the present invention provides a new idea for further designing new sensing structures, for example, in addition to measuring displacement, deformation can also be measured;

[0021] 4. The present invention has a simple structure, low manufacturing cost and great market advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural diagram of a vibration-to-image displacement amplifier;

[0023] Figure 2 Generate a module structure diagram for the image;

[0024] Figure 3 This is the structural diagram of the moving diaphragm;

[0025] Figure 4 It is the structural diagram of the static diaphragm;

[0026] Figure 5 This is the through-hole structure diagram of the moving diaphragm;

[0027] Figure 6 This is a diagram of the through-hole structure of the stationary diaphragm;

[0028] Figure 7 Generate imaging effect diagram for image generation module;

[0029] Figure 8 Schematic diagram of imaging effect of image generation module;

[0030] Figure 9 This is the principle diagram of overlapping circular hole imaging;

[0031] Figure 10 This is the principle diagram of overlapping circular holes movement;

[0032] Figure 11 It is the shell structure diagram;

[0033] Figure 12 This is a working principle diagram of a vibration-to-image displacement amplifier.

[0034] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0035] 1: Housing; 2: Image generation module;

[0036] 3: Vibrating diaphragm; 4: Overlapping circular holes;

[0037] 10: first chamber; 11: second chamber;

[0038] 12: via hole; 13: base;

[0039] 20: moving diaphragm; 21: stationary diaphragm;

[0040] 22: support rod; 23: small through hole;

[0041] 23a: first small hole; 23b: second small hole;

[0042] 23c: third small hole; 23d: fourth small hole;

[0043] 24: large through hole; 24a: first large hole;

[0044] 24b: second largest hole; 24c: third largest hole;

[0045] 24d: the fourth largest hole; 30: elastic pin;

[0046] 40: first overlapping circular hole; 41: second overlapping circular hole. DETAILED DESCRIPTION

[0047] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention are described in further detail below.

[0048] In order to overcome the problems existing in the traditional method of measuring vibration by electrical means, see Figures 1 to 12 , an embodiment of the present invention provides a vibration-to-image displacement amplifier, including: a shell 1, an image generation module 2 and a vibration diaphragm 3, the image generation module 2 is connected to the vibration diaphragm 3, and both are located inside the shell 1. After receiving the pressure wave signal, the vibration diaphragm 3 transmits the vibration displacement to the image generation module 2, and the image generation module 2 converts the vibration displacement signal into an output signal of image displacement. Specifically, the image generation module 2 generates overlapping circular holes 4, and the overlapping circular holes 4 move at a certain multiple of the vibration speed of the vibration diaphragm 3, which is specifically manifested as the small displacement of the vibration diaphragm 3 being amplified into a larger displacement of the overlapping circular holes 4. The specific amplification principle will be further explained later. The movement of the overlapping circular holes 4 after conversion can be further recorded by image acquisition equipment, etc., and the embodiment of the present invention does not impose further restrictions on other usage scenarios.

[0049] like Figure 2 As shown, the image generation module 2 is composed of a thin sheet of moving diaphragm 20 and a stationary diaphragm 21. The moving diaphragm 20 is close to one side of the stationary diaphragm 21 and can slide relative to it. A support rod 22 is provided at one end of the moving diaphragm 20 for connecting with the vibrating diaphragm 3. Figures 3 to 6 As shown, the moving diaphragm 20 and the stationary diaphragm 21 are respectively provided with small through holes 23 and large through holes 24. The edge shapes of the small through holes 23 and the large through holes 24 include but are not limited to circular holes and polygonal holes. In the embodiment of the present invention, hexagonal holes are used. The distribution rules of the small through holes 23 and the large through holes 24 on the moving diaphragm 20 and the stationary diaphragm 21 are the same. In the embodiment of the present invention, the small through holes 23 on the moving diaphragm 20 are the same as the center distance between adjacent small through holes (hereinafter referred to as spacing). Similarly, the large through holes 24 on the stationary diaphragm 21 are also the same as the spacing between adjacent large through holes. Furthermore, the ratio of the spacing between adjacent large through holes 24 in the horizontal direction to the spacing between adjacent small through holes 23 in the horizontal direction is the same as the ratio of the spacing between adjacent large through holes 24 in the vertical direction to the spacing between adjacent small through holes 23 in the vertical direction. In other words, the distribution of the large through holes 24 on the stationary diaphragm 21 is equivalent to the proportionally enlarged distribution of the small through holes 23 on the moving diaphragm 20. For example, the moving diaphragm 20 is magnified in a certain ratio and overlaps with the stationary diaphragm 21 . Specifically, when magnifying, the longitudinal and transverse ratios are the same, that is, if the transverse ratio is magnified 10 times, the longitudinal ratio must also be magnified 10 times.

[0050] In order to explain the working principle of the image generation module 2 more clearly, Figure 5 and Figure 6 The figure shows the positional relationship between a group of adjacent small through-holes 23 and a group of adjacent large through-holes 24. The distance between the first small hole 23a and the third small hole 23c is called the transverse small hole spacing, the distance between the first large hole 24a and the third large hole 24c is called the transverse large hole spacing, the distance between the second small hole 23b and the fourth small hole 23d is called the longitudinal small hole spacing, and the distance between the second large hole 24b and the fourth large hole 24d is called the longitudinal large hole spacing. Based on the above regulations, the ratio of the transverse large hole spacing to the transverse small hole spacing is the same as the ratio of the longitudinal large hole spacing to the longitudinal small hole spacing.

[0051] When the moving diaphragm 20 and the stationary diaphragm 21 that meet the above conditions are placed in an overlapping manner, the following will be formed according to the different overlapping areas of the small through holes 23 and the large through holes 24: Figure 7 The overlapping circular holes 4 shown in the figure appear as concentric circles, with the brightest in the center and gradually decreasing in brightness toward the edges. The horizontal spacing between the two overlapping circular holes 4 is the least common multiple of the horizontal spacing between the larger holes and the smaller holes. Similarly, the vertical spacing between the two overlapping circular holes 4 is the least common multiple of the vertical spacing between the larger holes and the smaller holes.

[0052] To illustrate the mechanism of the formation of overlapping circular holes 4, see Figure 8 , select the first overlapping circular hole 40 and the second overlapping circular hole 41 as a pair of laterally adjacent overlapping circular holes 4, and provide the small through hole 23 and the large through hole 24 between the adjacent overlapping circular holes 4, such as Figure 9 As shown in the figure, there are 11 small through holes 23 (light gray) and 10 large through holes 24 (dark gray). The centers of the small through holes 23 and the large through holes 24 at the beginning and end coincide with each other, and are located at the centers of the first overlapping circular hole 40 and the second overlapping circular hole 41 respectively. This means that in the transition from the first overlapping circular hole 40 to the second overlapping circular hole 41, the small through holes 23 first coincide with the centers of the large through holes 24, and then gradually coincide with each other after gradually separating. In fact, because the horizontal spacing between large holes and the horizontal spacing between small holes always have the lowest common multiple, the small through holes 23 and the large through holes 24 will inevitably coincide with each other at a certain distance. The result of this process is Figure 8 Similarly, the longitudinal distribution rule of the overlapping circular holes 4 is the same as the transverse distribution rule, which will not be described in detail here.

[0053] When the moving diaphragm 20 moves relative to the stationary diaphragm 21, for example: Figure 8 In the example, assuming that the moving diaphragm 20 moves to the left relative to the stationary diaphragm 21, the small through hole 23 at the center of the first overlapping circular hole 40 no longer coincides with the center of the large through hole 24, but the adjacent small through holes 23 will gradually begin to coincide with the adjacent large through holes 24, as shown in FIG. Figure 10As shown, at this time, the overall performance is that the overlapping circular holes 4 move to the left. When the small through hole 23 moves from one large through hole 24 to the next large through hole 24, that is, when it moves one horizontal large hole spacing, the overlapping circular hole 4 will move to the distance of the next overlapping circular hole 4 plus one horizontal large hole spacing. Assuming that the horizontal large hole spacing is m and the horizontal small hole spacing is n, for the convenience of explanation, m and n are taken as integers, and assuming that the least common multiple of m and n is p, then when the moving distance of the moving diaphragm 20 is m, the moving distance of the overlapping circular hole 4 is p+m. According to the above analysis, the moving distance k of the moving diaphragm 20 can be determined by observing the moving distance s of the overlapping circular hole 4, and the relationship between the two is:

[0054]

[0055] In the above formula, p is the least common multiple of m and n. Assuming m and k are fixed, a larger p means a larger s. To make p large enough, m and n are preferably coprime numbers. When they are coprime, the least common multiple of m and n is the product of the two terms, that is, p = m*n. Substituting this into formula (1) and simplifying it, we get:

[0056] s=(n+1)k(2)

[0057] It can be seen from formula (2) that when m and n are coprime, the moving distance s of the overlapping circular hole 4 is n+1 times the moving distance of the moving diaphragm 20, that is, the displacement of the moving diaphragm 20 is amplified by n+1 times through the displacement of the overlapping circular hole 4.

[0058] Furthermore, Figure 1 and Figure 11 As shown in the figure, a first chamber 10, a second chamber 11, a through hole 12 and a base 13 are provided on the shell 1; the first chamber 10 and the second chamber 11 are connected through the through hole 12, and the base 13 is located at the bottom of the second chamber 11, and is used to fix the stationary diaphragm 21 on the image generating module 2, and the through hole 12 is used to pass the support rod 22 on the moving diaphragm 20 through the first chamber 10 and connect it to the vibrating diaphragm 3.

[0059] Optionally, the surface of the base 13 is white or high-gloss, which is used to reflect the light entering the overlapping part of the small through hole 23 and the large through hole 24, so that the pattern of the overlapping circular holes 4 can be more prominent. Furthermore, the moving diaphragm 20 and the stationary diaphragm 21 are made of a material with a black surface.

[0060] like Figure 12As shown, the vibrating diaphragm 3 is located in the first chamber 10 and is connected to the housing 1 via a pair of elastic pins 30. The center of the vibrating diaphragm 3 is fixed to the support rod 22. When the vibrating diaphragm 3 vibrates, it can drive the support rod 22 to vibrate together. As a result, the displacement of the vibrating diaphragm 3 is transmitted to the moving diaphragm 20 through the support rod 22. The movement of the moving diaphragm 20 is amplified in the form of the movement of the overlapping circular hole 4. The displacement amplification factor of the vibrating diaphragm 3 is determined by formula (2).

[0061] The principle employed in this embodiment applies not only to situations where m is greater than n, but also to situations where n is greater than m, or where the moving diaphragm 20 is stationary while the stationary diaphragm 21 is moving, or even where the stationary diaphragm 21 is stationary while the moving diaphragm 20 expands proportionally. For example, assuming the expansion of the moving diaphragm 20, after expansion, the lateral aperture spacing changes from n0 to n1. At this point, the spacing of the overlapping circular apertures 4 changes from n0m+m to n1m+m. The distance of movement, or the difference, is (n1-n0)*m, which is exactly m times the change in the lateral aperture spacing (n1-n0), thus achieving the same amplification effect.

[0062] Unless otherwise specified, the embodiments of the present invention do not limit the models of the components. Any component that can perform the above functions may be used.

[0063] Those skilled in the art will understand that the accompanying drawings are only a schematic diagram of a preferred embodiment, and the serial numbers of the embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A vibration-to-image displacement amplifier, comprising: The housing, the image generation module and the vibrating diaphragm, wherein the image generation module and the vibrating diaphragm are connected, are all located inside the housing; The image generation module consists of a thin moving diaphragm and a stationary diaphragm. The moving diaphragm slides against one side of the stationary diaphragm. A support rod is provided at one end of the moving diaphragm for connecting to the vibrating diaphragm. The moving diaphragm and the stationary diaphragm are respectively provided with small through holes and large through holes. The center spacing between the small through holes on the moving diaphragm and the adjacent small through holes is the same, and the center spacing between the large through holes on the stationary diaphragm and the adjacent large through holes is the same. The ratio of the spacing between adjacent large through-holes in the transverse direction to the spacing between adjacent small through-holes in the transverse direction is the same as the ratio of the spacing between adjacent large through-holes in the longitudinal direction to the spacing between adjacent small through-holes in the longitudinal direction. The edge shapes of the small through holes and the large through holes are circular or polygonal, and the distribution rules of the small through holes and the large through holes in the moving diaphragm and the stationary diaphragm are the same; Among them, the moving diaphragm and the stationary diaphragm are placed overlapping to form overlapping circular holes. The overlapping circular holes are concentric circles with the brightest in the middle and gradually decreasing in brightness towards the edges. The horizontal spacing of the overlapping circular holes is the least common multiple of the horizontal spacing between large holes and the horizontal spacing between small holes. The vertical spacing of the overlapping circular holes is the least common multiple of the vertical spacing between large holes and the vertical spacing between small holes. The displacement of the vibrating diaphragm is transmitted to the moving diaphragm through the support rod, and the movement of the moving diaphragm is amplified in the form of the movement of the overlapping circular holes. The amplification factor is obtained by the following formula: ； Where s is the distance of movement of the overlapping circular holes, n is the distance between the small holes, and k is the distance of movement of the moving diaphragm.

2. The vibration-to-image displacement amplifier according to claim 1, characterized in that: The shell is provided with a first cavity, a second cavity, a via hole and a base; The first chamber and the second chamber are connected through a via. The base is located at the bottom of the second chamber and is used to fix the stationary diaphragm on the image generation module. The via is used to pass the support rod on the moving diaphragm through the first chamber and connect it to the vibrating diaphragm.

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