Underwater acoustic sensor integrated manufacturing model and method based on bionic cilia

Abstract

The invention provides an underwater acoustic sensor integrated manufacturing model and method based on bionic cilia, belongs to the field of underwater acoustic sensor manufacturing, and comprises a photocuring printing device for realizing printing and two underwater acoustic sensor integrated manufacturing printing models based on bionic cilia, the printing positioning device is applied to first printing to realize a printing positioning function, and is applied to second printing to realize a structure protection function. The invention further provides a photocuring printing method for protecting the fragile structure by improving the printing process. The bionic cilia can be directly formed on the underwater acoustic sensor base through photocuring printing, and the adverse effect on the performance of the underwater acoustic sensor due to the fact that glue residues are left at the bottom of the bionic cilia in a traditional glue bonding method is effectively avoided; the problem of inaccurate positioning caused by manual visual positioning is effectively avoided; and a fragile cross beam structure on the surface of the sensor base is effectively protected.

Description

Technical Field

[0001] The invention belongs to the field of underwater acoustic sensor manufacturing, and in particular relates to a manufacturing model and method for positioning bionic cilia on a cross beam by utilizing a light-curing printing technology. Background Art

[0002] An underwater acoustic sensor is a device used to detect acoustic wave signals in water. It is widely used in underwater detection, navigation, environmental monitoring and other fields. Since low-frequency underwater acoustic signals are less absorbed in water and have a long propagation distance, they have become a common means of long-range detection and deep-sea detection. The acquisition and processing of low-frequency underwater acoustic signals in underwater sound fields is also a problem that scholars in the fields of ocean acoustics and hydroacoustics are currently paying more attention to. At present, the use of ciliary vector underwater acoustic sensors to measure low-frequency underwater acoustic signals has become an increasingly popular trend. This type of sensor detects the sound pressure gradient through a ciliary-cross beam structure without the need for elastic suspension, thus avoiding the interference of extremely low-frequency resonance peaks.

[0003] Stereolithography is an advanced 3D printing technology. Its basic principle is derived from the unique property of photosensitive materials that solidify under ultraviolet (UV) irradiation. This technology mainly uses photosensitive polymer resins as printing materials. After being irradiated with ultraviolet light of a specific wavelength, these resins are transformed into solid structures through photopolymerization reactions, which can achieve accurate modeling of 3D objects.

[0004] Weirong Ren and others from North University of China mentioned in the paper "Design and Implementation of Crossed-circle MEMS Ciliary Vector Hydrophone" published in Measurement in 2022 that the manufacturing method of hydroacoustic sensor cilia mainly relies on manual bonding. Specifically, the operator uses tools such as microscopes and mobile platforms to visually adhere the prefabricated cilia to the center of the sensor cross beam. This manual operation method requires high skills from the operator and has a series of problems: first, the cross beam of the sensor is very fragile and easily damaged during operation; second, glue residue is often left at the bottom during the cilia bonding process, affecting the performance of the sensor; finally, the accuracy of the final position of the cilia is difficult to guarantee, which further restricts the manufacturing accuracy of the sensor. Since the required bionic cilia have a radius of only 175μm, but the height can reach several millimeters, printing on the sensor using conventional methods will cause problems such as sample non-formation and damage to the cross beam structure. Summary of the invention

[0005] The present invention aims to overcome the shortcomings of the prior art and provide a model and method for realizing the integrated manufacturing of an underwater acoustic sensor using a light-curing printer. The operation process of the method is relatively simple, and only two specific printing operations and corresponding models are required to avoid damage to the cross beam structure and solve the problem of sample non-forming, and accurately form the required bionic cilia on the sensor base.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] An integrated manufacturing model of an acoustic sensor based on bionic cilia, the integrated manufacturing model of the acoustic sensor comprising a light-curing printing device for printing and two integrated manufacturing printing models of the acoustic sensor based on bionic cilia. The first integrated manufacturing printing model is applied in the first printing to realize the printing positioning function, which is defined as the printing positioning model, and the second integrated manufacturing printing model is applied in the second printing to realize the structural protection function, which is defined as the structural protection model.

[0008] The printing positioning model includes a positioning printing base 10 with a plate-like structure, four fixing clips 11 for fixing an acoustic sensor base 13 with a cross-beam structure on the positioning printing base 10, and a positioning column 12 for positioning the center point of the acoustic sensor base 13 to the center point of the recessed area, wherein there is a recessed area in the exact center of the positioning printing base 10.

[0009] Furthermore, the length and width of the positioning printing base 10 are the maximum length and width that can be printed by the light-curing printing device, and the height is twice the height of the hydroacoustic sensor base 13.

[0010] Furthermore, the length of a recessed area at the center of the positioning printing base 10 is twice the length of the hydroacoustic sensor base 13, and the width of the recessed area is twice the width of the hydroacoustic sensor base 13. The center of the recessed area is four symmetrical fixing clips 11 and a positioning base column 12.

[0011] Furthermore, the fixing clip 11 is a thin cylinder inclined at a certain angle to the positioning printing base 10, and the spacing distance between the bottom centers of each pair of centrally symmetrical fixing clips 11 is equal to the width of the hydroacoustic sensor base 13 plus twice the cylindrical diameter of the fixing clip 11. The hydroacoustic sensor base is clamped by the inclined design.

[0012] Furthermore, the positioning base column 12 is a thin cylinder perpendicular to the positioning printing base 10 , and is used to play a positioning role when the hydroacoustic sensor base 13 is embedded in the fixing clip 11 .

[0013] Furthermore, the hydroacoustic sensor base 13 is a silicon device to be processed, not a printed product.

[0014] Further, preferably, by widening the central recessed area of ​​the printed positioning model, the corresponding fixing clips 11 and the positioning base columns 12 are arranged in an array form, and a plurality of hydroacoustic sensor bases 13 can be placed.

[0015] The structural protection model includes bionic cilia 14 and a surrounding protective layer structure 15. The bionic cilia 14 and the annular protective layer structure 15 are of the same height, the bionic cilia 14 are vertically formed at the center of the cross beam of the hydroacoustic sensor base 13, and the protective layer structure 15 is vertically formed on the positioning printing base 10.

[0016] Furthermore, the diameter of the protection layer structure 15 is 2.74 times the length of the positioning printing base 10 .

[0017] Furthermore, the photocuring printing device includes: a movable guide rail 1 at the bottom, a resin tank shaft 2 that can move along the movable guide rail 1 in the y-axis direction, a resin tank 3 fixed on the resin tank shaft 2, a printing platform shaft 4 vertically fixed on the resin tank shaft 2, a printing platform 5 that can move along the z-axis direction on the printing platform shaft 4, a release film 6 installed above the resin tank 3, a laser rangefinder 7 fixed just above the center of the movable guide rail 1, a UV curing light source 8, and a real-time monitoring camera 9. The laser rangefinder 7 can move along the x-axis direction, and the printing platform 5 and the release film 6 can be removed separately.

[0018] A bionic cilia-based integrated manufacturing method for an underwater acoustic sensor is implemented based on the above-mentioned integrated manufacturing model for an underwater acoustic sensor. It is a light-curing printing method that protects fragile structures by improving the printing process, and includes the following steps:

[0019] Step 1) Move the resin tank shaft 2 and the resin tank 3 mounted on the resin tank shaft 2, the printing platform shaft 4 fixed on the resin tank shaft 2, the printing platform 5 mounted on the printing platform shaft 4, and the release film 6 mounted on the resin tank 3 along the movable guide rail 1 to the center of the guide rail, so that the center points of the printing platform 5, the release film 6 and the UV curing light source 8 are located on a vertical line;

[0020] Step 2) changing the y-axis position of the release film 6 installed on the resin tank 3 by moving the resin tank shaft 2, changing the x-axis position of the laser rangefinder 7 relative to the release film 6 by moving the laser rangefinder 7, measuring the z-axis heights of the four corners of the release film 6 by using the laser rangefinder 7, and leveling the release film 6 until the height difference between any two corners on the z-axis is less than 20 μm;

[0021] Step 3) Remove the release film 6 from the resin tank 3, change the y-axis position of the printing platform 5 by moving the resin tank shaft 2, change the x-axis position of the laser rangefinder 7 relative to the printing platform 5 by moving the laser rangefinder 7, use the laser rangefinder 7 to measure the z-axis heights of the four corners of the printing platform 5, and level the printing platform 5 until the height difference between any two corners on the z-axis is less than 20 μm;

[0022] Step 4) Install the release film 6 onto the resin tank 3, and use a rubber-tipped dropper to add liquid resin into the resin tank 3 until the liquid surface is flush with the scale line of the inner cavity of the resin tank 3. At this time, the lower end of the printing platform 5 is completely immersed in the liquid resin, and the lower surface of the release film 6 is just in contact with the upper surface of the liquid resin;

[0023] Step 5) Turn on the UV curing light source 8, observe the pattern formed by the UV curing light source 8 on the release film 6 through the real-time monitoring camera 9, and change the position of the release film 6 on the z-axis by adjusting the height of the resin tank 3 until the UV curing light source 8 forms a highly concentrated light spot on the release film 6;

[0024] Step 6) Turn off the UV curing light source 8, move the laser rangefinder 7 to be just above the center point of the release film 6, and measure and record the z-axis position of the release film 6 at this time;

[0025] Step 7) Remove the release film 6 from the resin tank 3, and use a blade to gently scrape off the solid resin attached to the lower surface of the release film 6 caused by the light spot formed by the UV curing light source 8 in the previous step;

[0026] Step 8) Install the release film 6 onto the resin tank 3, and adjust the position of the printing platform 5 on the printing platform axis 4 according to the z-axis position of the release film 6 measured in step 6) until the upper surface of the lower end of the printing platform 5 is in contact with the lower surface of the release film 6;

[0027] Step 9) Import the printing model file for realizing the printing positioning function, set the illumination time and illumination intensity of the UV curing light source 8 during the printing process, set the descent speed and single descent distance of the printing platform 5 during the printing process, set the waiting time for the liquid resin to level after each descent of the printing platform 5, and perform the first printing;

[0028] Step 10) After the first printing is completed, the release film 6 is removed from the resin tank 3, the printing platform 5 is removed from the printing platform shaft 4, and the printed part adhered to the upper surface of the lower end of the printing platform 5, the printed part including a positioning printing base 10, four fixing clips 11 and a positioning base column 12 formed by liquid resin being irradiated and cured by a UV curing light source 8;

[0029] Step 11) Clean the printing platform 5 and the positioning printing base 10, four fixing clips 11 and the positioning base column 12 still attached to the printing platform 5 with 95% ethanol, and push the silicon hydroacoustic sensor base 13 horizontally into the square gap formed by the four fixing clips 11 and the positioning base column 12;

[0030] Step 12) Install the release film 6 onto the resin tank 3, use a rubber-tipped dropper to add liquid resin into the resin tank 3 to the scale line of the inner cavity of the resin tank 3, repeat the operation of step 5), and when the UV curing light source 8 forms a highly concentrated light spot on the release film 6, adjust the height of the resin tank 3 and move the z-axis position of the release film 6 upward by 0.1 mm;

[0031] The steps described ensure that during subsequent printing, the upper surface of the solid resin part generated by the UV curing light source 8 will not adhere very firmly to the lower surface of the release film 6, thereby avoiding the tension generated when the release film 6 is removed after printing, which may cause damage to the printed bionic cilia 14 and the cross beam structure on the hydroacoustic sensor base 13 connected thereto.

[0032] Step 13) Turn off the UV curing light source 8, move the laser rangefinder 7 to be just above the center point of the release film 6, and measure and record the z-axis position of the release film 6 at this time;

[0033] Step 14) Remove the release film 6 from the resin tank 3, and use a blade to gently scrape off the solid resin attached to the lower surface of the release film 6 caused by the light spot formed by the UV curing light source 8 in the previous step;

[0034] Step 15) Install the printing platform 5 on the printing platform shaft 4, install the release film 6 on the resin tank 3, and adjust the position of the printing platform 5 on the printing platform shaft 4 according to the z-axis position of the release film 6 measured in step 13) until the upper surface of the hydroacoustic sensor base 13 embedded in the first print on the printing platform 5 is in contact with the lower surface of the release film 6;

[0035] Step 16) Import the printing model file for realizing the structure protection function, set the illumination time and illumination intensity used by the UV curing light source 8 during the printing process, set the single descent distance of the printing platform 5, set the waiting time for the liquid resin to level after each descent of the printing platform 5, set the descent speed of the printing platform 5 during the printing process to half of the setting of the first printing, so as to avoid the liquid resin in the resin tank 3 from flowing too fast and damaging the printed structure, and perform the second printing;

[0036] Step 17) After the second printing is completed, take out the printing platform 5 and the resin print adhered to the surface of the printing platform 5 and the acoustic sensor base 13 embedded in the positioning printing base 10. The resin print includes the positioning printing base 10, four fixing clips 11, a positioning base column 12, bionic cilia 14 and a protective layer structure 15. After taking them out, place them in 95% ethanol and shake them gently for one minute to wash off the liquid resin remaining on the sample, and finally take them out and wait for natural air drying.

[0037] Step 18) Use a thin blade to insert along the contact surface between the printing platform 5 and the printed positioning printing base 10, and completely scrape off the positioning printing base 10 and the four fixing clips 11 on the positioning printing base 10, the positioning column 12, the acoustic sensor base 13 embedded between the fixing clips 11 and the positioning column 12, the bionic cilia 14 generated at the center of the cross cantilever beam of the acoustic sensor base 13, and the protective layer structure 15 surrounding the periphery of the acoustic sensor base 13. Use the tip of the knife to gently push the acoustic sensor base 13 with the bionic cilia 14 in the center of the cross beam, and take out the bionic cilia 14 together with the acoustic sensor base 13 from the side of the fixing clip 11 without the positioning column 12, so that the acoustic sensor composed of the bionic cilia 14 and the acoustic sensor base 13 can be obtained.

[0038] The beneficial effects of the present invention are as follows:

[0039] (1) The present invention can directly form bionic cilia on the base of the underwater acoustic sensor by photocuring printing, which effectively avoids the traditional glue bonding method leaving glue residue at the bottom of the bionic cilia and causing adverse effects on the performance of the underwater acoustic sensor.

[0040] (2) The present invention uses the equipment in the light-curing printing system to locate the position of the bionic cilia on the sensor, effectively avoiding the problem of inaccurate positioning caused by manual visual positioning.

[0041] (3) The present invention can effectively protect the fragile cross-beam structure on the surface of the sensor base. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a schematic diagram of the structure of the light-curing printing device used in the present invention.

[0043] Figure 2 It is a structural schematic diagram of a printing model for realizing the printing positioning function of the present invention.

[0044] Figure 3 It is a structural schematic diagram of a printing model for realizing a structural protection function of the present invention.

[0045] Figure 4 It is a schematic diagram of the protective printing structure of the printing method of the present invention and the cross beam structure of the hydroacoustic sensor base; Figure 4 (a) is the principle of traditional photocuring printing. Figure 4 (b) is the light-curing printing principle of the method of the present invention.

[0046] Figure 5 It is a rendering of the manual bonding method compared with the method of the present invention; Figure 5 (a) The effect of the water acoustic sensor made by the traditional manual bonding method. Figure 5 (b) is the effect of the underwater acoustic sensor made by the method of the present invention.

[0047] In the figure: 1 moving guide rail; 2 resin tank shaft; 3 resin tank; 4 printing platform shaft; 5 printing platform; 6 release film; 7 laser rangefinder; 8 UV curing light source; 9 real-time monitoring camera; 10 positioning printing base; 11 fixing clip; 12 positioning base column; 13 hydroacoustic sensor base; 14 bionic cilia; 15 protective layer structure. DETAILED DESCRIPTION

[0048] The present invention is further described in detail below in conjunction with embodiments so that those skilled in the art can implement the invention with reference to the description.

[0049] like Figure 1 As shown, the light-curing printing device to which the present invention is applied comprises: a moving guide rail 1, a resin tank shaft 2, a resin tank 3, a printing platform shaft 4, a printing platform 5, a release film 6, a laser rangefinder 7, a UV curing light source 8, and a real-time monitoring camera 9; Figure 2 As shown in FIG. 1 , it is a printing model for realizing the printing positioning function of the present invention, and the model includes a positioning printing base 10, a fixing clip 11 and a positioning base column 12. The hydroacoustic sensor base 13 does not belong to the present model, but is an additional silicon device to be processed which is inserted after the printing of the present model is completed; Figure 3 As shown, it is a printed model of the present invention to realize the structural protection function, and the model includes bionic cilia 14 and a protective layer structure 15. It is measured in advance that the height of the hydroacoustic sensor base 10 is 300 μm, and the length and width are both 4.6 mm.

[0050] Step 1) Move the resin tank shaft 2 and the resin tank 3 mounted on the resin tank shaft 2, the printing platform shaft 4 fixed on the resin tank shaft 2, the printing platform 5 mounted on the printing platform shaft 4, and the release film 6 mounted on the resin tank 3 along the movable guide rail 1 to the center of the guide rail, so that the center points of the printing platform 5, the release film 6 and the UV curing light source 8 are located on a vertical line;

[0051] Step 2) changing the y-axis position of the release film 6 installed on the resin tank 3 by moving the resin tank shaft 2, changing the x-axis position of the laser rangefinder 7 relative to the release film 6 by moving the laser rangefinder 7, measuring the z-axis heights of the four corners of the release film 6 by using the laser rangefinder 7, and leveling the release film 6 until the height difference between any two corners on the z-axis is less than 20 μm;

[0052] Step 3) Remove the release film 6 from the resin tank 3, change the y-axis position of the printing platform 5 by moving the resin tank shaft 2, change the x-axis position of the laser rangefinder 7 relative to the printing platform 5 by moving the laser rangefinder 7, use the laser rangefinder 7 to measure the z-axis heights of the four corners of the printing platform 5, and level the printing platform 5 until the height difference between any two corners on the z-axis is less than 20 μm;

[0053] Step 4) Install the release film 6 onto the resin tank 3, and use a rubber-tipped dropper to add liquid resin into the resin tank 3 until the liquid surface is flush with the scale line of the inner cavity of the resin tank 3. At this time, the lower end of the printing platform 5 is completely immersed in the liquid resin, and the lower surface of the release film 6 is just in contact with the upper surface of the liquid resin;

[0054] Step 5) Turn on the UV curing light source 8, observe the pattern formed by the UV curing light source 8 on the release film 6 through the real-time monitoring camera 9, and change the position of the release film 6 on the z-axis by adjusting the height of the resin tank 3 until the UV curing light source 8 forms a highly concentrated light spot on the release film 6;

[0055] Step 6) Turn off the UV curing light source 8, move the laser rangefinder 7 to be just above the center point of the release film 6, and measure and record the z-axis position of the release film 6 at this time;

[0056] Step 7) Remove the release film 6 from the resin tank 3, and use a blade to gently scrape off the solid resin attached to the lower surface of the release film 6 caused by the light spot formed by the UV curing light source 8 in the previous step;

[0057] Step 8) Install the release film 6 onto the resin tank 3, and adjust the position of the printing platform 5 on the printing platform axis 4 according to the z-axis position of the release film 6 measured in step 6) until the upper surface of the lower end of the printing platform 5 is in contact with the lower surface of the release film 6;

[0058] Step 9) Import the printing model file for realizing the printing positioning function, set the parameters used by the UV curing light source 8 during the printing process, the illumination time of the first layer is 4s, the illumination intensity is 100, and the leveling time of the liquid resin is 600s, the illumination time of the 2nd to 6th layers is 3.5s, the illumination intensity is 100, and the leveling time of the liquid resin is 400s, the illumination time of the 7th to 20th layers is 3s, the illumination intensity is 100, and the leveling time of the liquid resin is 300s, and the illumination time of the 20th layer onwards is 3s, the illumination intensity is 100, and the leveling time of the liquid resin is 200s. Set the parameters used by the printing platform 5 during the printing process, and the descent distance of the printing platform 5 after each layer is printed is 50μm, and the descent speed is 2mm / s.

[0059] The length and width of the printing model used to realize the printing positioning function are 48mm*27mm, and the distance from the highest plane to the printing platform 5 is 600μm; there is a concave area in the center of the model, and the distance from the plane of the concave to the printing platform 5 is 300μm, and the length and width of the concave area are 8*8mm; there are four symmetrical fixing clips 11 and a positioning base column 12 in the concave area; the fixing clips 11 are two pairs of mutually inclined cylinders with an inclination angle of about 22° and a diameter of 0.1mm, and the spacing distance between the bottom centers of each pair of symmetrical fixing clips 11 is 4.8mm; the positioning base column 8 is a vertical cylinder perpendicular to the positioning printing base 10 and with a diameter of 0.1mm. The above-mentioned printed materials are all resin materials, their upper surfaces are flush, and the distance from the upper surface to the upper surface of the printing platform 5 is 600μm.

[0060] Step 10) After the first printing is completed, the release film 6 is removed from the resin tank 3, the printing platform 5 is removed from the printing platform shaft 4, and the printed part adhered to the upper surface of the lower end of the printing platform 5, the printed part including a positioning printing base 10, four fixing clips 11 and a positioning base column 12 formed by liquid resin being irradiated and cured by a UV curing light source 8;

[0061] Step 11) Clean the printing platform 5 and the positioning printing base 10, four fixing clips 11 and the positioning base column 12 still attached to the printing platform 5 with 95% ethanol, and push the silicon hydroacoustic sensor base 13 horizontally into the square gap formed by the four fixing clips 11 and the positioning base column 12;

[0062] Step 12) Install the release film 6 onto the resin tank 3, use a rubber-tipped dropper to add liquid resin into the resin tank 3 to the scale line of the inner cavity of the resin tank 3, repeat the operation of step 5), and when the UV curing light source 8 forms a highly concentrated light spot on the release film 6, adjust the height of the resin tank 3 and move the z-axis position of the release film 6 upward by 0.1 mm;

[0063] Step 13) Turn off the UV curing light source 8, move the laser rangefinder 7 to be just above the center point of the release film 6, and measure and record the z-axis position of the release film 6 at this time;

[0064] Step 14) Remove the release film 6 from the resin tank 3, and use a blade to gently scrape off the solid resin attached to the lower surface of the release film 6 caused by the light spot formed by the UV curing light source 8 in the previous step;

[0065] Step 15) Install the printing platform 5 on the printing platform shaft 4, install the release film 6 on the resin tank 3, and adjust the position of the printing platform 5 on the printing platform shaft 4 according to the z-axis position of the release film 6 measured in step 13) until the upper surface of the hydroacoustic sensor base 13 embedded in the first print on the printing platform 5 is in contact with the lower surface of the release film 6;

[0066] Step 16) Import the printing model file for realizing the structural protection function, set the parameters used by the UV curing light source 8 during the printing process, the illumination time of the first layer is 4s, the illumination intensity is 100, and the leveling time of the liquid resin is 600s, the illumination time of the 2nd to 6th layers is 3.5s, the illumination intensity is 100, and the leveling time of the liquid resin is 400s, the illumination time of the 7th to 20th layers is 3s, the illumination intensity is 100, and the leveling time of the liquid resin is 300s, and the illumination time of the 20th layer onwards is 3s, the illumination intensity is 100, and the leveling time of the liquid resin is 200s. Set the parameters used by the printing platform 5 during the printing process, the descending distance of each printing layer of the printing platform 5 is 50μm, and the descending speed is half of the setting for the first printing, that is, 1mm / s, to prevent the liquid resin in the resin tank 3 from flowing too fast and damaging the printed structure.

[0067] The printed model for realizing the structural protection function includes bionic cilia 14 and a protective layer structure 15 surrounding the bionic cilia 14. The radius of the bionic cilia 14 is 175 μm and the height is 3.5 mm. The inner circle radius of the protective layer structure 15 is 6.3 mm, the outer circle radius is 6.5 mm, and the height is 3.5 mm.

[0068] Step 17) After the second printing is completed, take out the printing platform 5 and the resin print adhered to the surface of the printing platform 5 and the acoustic sensor base 13 embedded in the positioning printing base 10. The resin print includes the positioning printing base 10, four fixing clips 11, a positioning base column 12, bionic cilia 14 and a protective layer structure 15. After taking them out, place them in 95% ethanol and shake them gently for one minute to wash off the liquid resin remaining on the sample, and finally take them out and wait for natural air drying.

[0069] Step 18) Use a thin blade to insert along the contact surface between the printing platform 5 and the printed positioning printing base 10, and completely scrape off the positioning printing base 10 and the four fixing clips 11 on the positioning printing base 10, the positioning column 12, the acoustic sensor base 13 embedded between the fixing clips 11 and the positioning column 12, the bionic cilia 14 generated at the center of the cross cantilever beam of the acoustic sensor base 13, and the protective layer structure 15 surrounding the periphery of the acoustic sensor base 13. Use the tip of the knife to gently push the acoustic sensor base 13 with the bionic cilia 14 in the center of the cross beam, and take out the bionic cilia 14 together with the acoustic sensor base 13 from the side of the fixing clip 11 without the positioning column 12, so that the acoustic sensor composed of the bionic cilia 14 and the acoustic sensor base 13 can be obtained.

[0070] The above-described embodiments merely express the implementation methods of the present invention, but they cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. An integrated manufacturing model of an underwater acoustic sensor based on bionic cilia, characterized in that: The integrated manufacturing model of the underwater acoustic sensor includes a light-curing printing device for printing and two integrated manufacturing printing models of the underwater acoustic sensor based on bionic cilia; wherein the first integrated manufacturing printing model is applied in the first printing to realize the printing positioning function, and is defined as a printing positioning model, and the second integrated manufacturing printing model is applied in the second printing to realize the structural protection function, and is defined as a structural protection model; The printing positioning model comprises a positioning printing base (10) of a plate-like structure, four fixing clips (11) for fixing a hydroacoustic sensor base (13) with a cross beam structure on the positioning printing base (10), and a positioning base column (12) for positioning the center point of the hydroacoustic sensor base (13) at the center point of a recessed area, wherein a recessed area is provided at the exact center of the positioning printing base (10); wherein the hydroacoustic sensor base (13) is a device to be processed; The structural protection model comprises bionic cilia (14) and a protective layer structure (15) surrounding the bionic cilia (14). The bionic cilia (14) and the annular protective layer structure (15) are of the same height. The bionic cilia (14) are vertically formed at the center of the cross beam of the underwater acoustic sensor base (13). The protective layer structure (15) is vertically formed on the positioning printing base (10).

2. According to claim 1, the integrated manufacturing model of the underwater acoustic sensor based on bionic cilia is characterized in that: In the printing positioning model: The length and width of the positioning printing base (10) are the maximum length and width that can be printed by the light-curing printing device, and its height is twice the height of the hydroacoustic sensor base (13); The length of a recessed area in the center of the positioning printing base (10) is twice the length of the hydroacoustic sensor base (13), the width of the recessed area is twice the width of the hydroacoustic sensor base (13), and the center of the recessed area is four symmetrical fixing clips (11) and a positioning base column (12).

3. The integrated manufacturing model of an underwater acoustic sensor based on bionic cilia according to claim 1 is characterized in that: In the printing positioning model: The fixing clips (11) are thin cylinders arranged obliquely with respect to the positioning printing base (10), and the spacing distance between the centers of the bottom circles of each pair of centrally symmetrical fixing clips (11) is equal to the width of the hydroacoustic sensor base (13) plus twice the cylinder diameter of the fixing clips (11); The positioning base column (12) is a thin cylinder perpendicular to the positioning printing base (10).

4. The integrated manufacturing model of an underwater acoustic sensor based on bionic cilia according to claim 1 is characterized in that: By widening the central recessed area of ​​the positioning printing base (10) of the printing positioning model, the corresponding fixing clips (11) and the positioning base columns (12) are arranged in an array form, so that a plurality of hydroacoustic sensor bases (13) can be placed.

5. The integrated manufacturing model of an underwater acoustic sensor based on bionic cilia according to claim 1 is characterized in that: The diameter of the protective layer structure (15) in the structural protection model is 2.74 times the length of the positioning printing base (10).

6. The integrated manufacturing model of an underwater acoustic sensor based on bionic cilia according to claim 1 is characterized in that: The light-curing printing device comprises: a movable guide rail (1) at the bottom, a resin tank shaft (2) movable along the movable guide rail (1) in the y-axis direction, a resin tank (3) fixed on the resin tank shaft (2), a printing platform shaft (4) vertically fixed on the resin tank shaft (2), a printing platform (5) movable along the z-axis direction on the printing platform shaft (4), a release film (6) installed above the resin tank (3), a laser rangefinder (7) fixed directly above the center of the movable guide rail (1), a UV curing light source (8) and a real-time monitoring camera (9).

7. A method for integrated manufacturing of an underwater acoustic sensor based on bionic cilia, implemented based on the integrated manufacturing model of the underwater acoustic sensor according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1) The center points of the printing platform (5), the release film (6) and the UV curing light source (8) are located on a vertical line; Step 2) changing the y-axis position of the release film (6) by moving the resin tank shaft (2), changing the x-axis position of the laser rangefinder (7) relative to the release film (6) by moving the laser rangefinder (7), and using the laser rangefinder (7) to measure the z-axis heights of the four corners of the release film (6); Step 3) removing the release film (6), changing the y-axis position of the printing platform (5) by moving the resin tank shaft (2), changing the x-axis position of the laser rangefinder (7) relative to the printing platform (5) by moving the laser rangefinder (7), and using the laser rangefinder (7) to measure the z-axis heights of the four corners of the printing platform (5); Step 4) Install the release film (6) on the resin tank (3), add liquid resin into the resin tank (3) until the liquid surface is flush with the scale line of the inner cavity of the resin tank (3), at which time the lower end of the printing platform (5) is completely immersed in the liquid resin, and the lower surface of the release film (6) is in contact with the upper surface of the liquid resin; Step 5) turning on the UV curing light source (8), observing the pattern formed by the UV curing light source (8) on the release film (6) through the real-time monitoring camera (9), and changing the position of the release film (6) on the z-axis by adjusting the height of the resin tank (3) until the UV curing light source (8) forms a highly concentrated light spot on the release film (6); Step 6) turning off the UV curing light source (8), moving the laser rangefinder (7) to the position just above the center point of the release film (6), and measuring and recording the z-axis position of the release film (6) at this time; Step 7) removing the release film (6) again, and scraping off the solid resin attached to the lower surface of the release film (6); Step 8) Install the release film (6) onto the resin tank (3), and adjust the position of the printing platform (5) until the upper surface of the lower end of the printing platform (5) contacts the lower surface of the release film (6); Step 9) importing a printing model file for realizing the printing positioning function, setting the illumination time and illumination intensity of the UV curing light source (8) used in the printing process, setting the descent speed and single descent distance of the printing platform (5) in the printing process, setting the waiting time for the liquid resin to level after each descent of the printing platform (5), and performing the first printing; Step 10) After the first printing is completed, the release film (6) is removed from the resin tank (3), the printing platform (5) is removed from the printing platform shaft (4), and the printed part adhered to the upper surface of the lower end of the printing platform (5), the printed part comprising a positioning printing base (10), four fixing clips (11) and a positioning base column (12) formed by liquid resin being cured by UV curing light source (8); Step 11) cleaning the printing platform (5) and the positioning printing base (10), four fixing clips (11) and the positioning base column (12) on the printing platform (5), and pushing the silicon hydroacoustic sensor base (13) horizontally into the square gap formed by the four fixing clips (11) and the positioning base column (12); Step 12) Install the release film (6) onto the resin tank (3), add liquid resin into the resin tank (3) to the scale line of the inner cavity of the resin tank (3), repeat the operation of step 5), and when the UV curing light source (8) forms a highly concentrated light spot on the release film (6), adjust the height of the resin tank (3) and move the z-axis position of the release film (6) upward; Step 13) Turn off the UV curing light source (8), move the laser rangefinder (7) to the position just above the center point of the release film (6), and measure and record the z-axis position of the release film (6) at this time; Step 14) removing the release film (6) from the resin tank (3) and removing the solid resin attached to the lower surface of the release film (6); Step 15) Install the printing platform (5) on the printing platform shaft (4), install the release film (6) on the resin tank (3), and adjust the position of the printing platform (5) on the printing platform shaft (4) according to the z-axis position of the release film (6) measured in step 13) until the upper surface of the hydroacoustic sensor base (13) embedded in the first print on the printing platform (5) contacts the lower surface of the release film (6); Step 16) importing a printing model file for realizing the structure protection function, setting the illumination time and illumination intensity of the UV curing light source (8) used in the printing process, setting the single descent distance of the printing platform (5), setting the waiting time for the liquid resin to level after each descent of the printing platform (5), setting the descent speed of the printing platform (5) during the printing process to half of the setting of the first printing, so as to avoid the liquid resin in the resin tank (3) flowing too fast to damage the printed structure, and performing a second printing; Step 17) After the second printing is completed, the printing platform (5) and the resin printed part adhered to the surface of the printing platform (5) and the acoustic sensor base (13) embedded in the positioning printing base (10) are taken out, wherein the resin printed part includes the positioning printing base (10), four fixing clips (11), a positioning base column (12), bionic cilia (14) and a protective layer structure (15); Step 18) The positioning printing base (10) and the structure on the surface of the positioning printing base (10) are completely scraped off, and the bionic cilia (14) together with the hydroacoustic sensor base (13) are taken out to obtain a hydroacoustic sensor composed of the bionic cilia (14) and the hydroacoustic sensor base (13).

8. The integrated manufacturing method of an underwater acoustic sensor based on bionic cilia according to claim 7 is characterized in that: The step 2) requires leveling the release film (6) until the height difference between any two corners on the z-axis is less than 20 μm.

9. The integrated manufacturing method of an underwater acoustic sensor based on bionic cilia according to claim 7 is characterized in that: The step 3) requires leveling the printing platform (5) until the height difference between any two corners on the z-axis is less than 20 μm.

10. The integrated manufacturing method of an underwater acoustic sensor based on bionic cilia according to claim 7, characterized in that: In the step 12), the z-axis position of the release film (6) is moved upward by 0.1 mm.

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