Optical fiber pickup and optical fiber pickup system

Abstract

The utility model provides an optical fiber pickup and an optical fiber pickup system, and the optical fiber pickup comprises a housing and a fiber coiling assembly, the housing is internally provided with an accommodation cavity, and the interior of the accommodation cavity is provided with a mounting surface perpendicular to a first direction; the fiber coiling assembly is fixedly arranged on the mounting surface and is provided with a fiber coiling surface arranged around a first axis, the extension direction of the first axis is a second direction, and an included angle is formed between the second direction and the first direction; a first fixing part and a second fixing part are arranged at the two ends, in the second direction, of the fiber coiling assembly respectively, and the first fixing part and the second fixing part are both connected with the damping assembly so that the fiber coiling assembly can be fixed to the installation face through the damping assembly; according to the arrangement, the fixing stability of the fiber coiling assembly in the containing cavity can be improved, the influence of shell vibration on the fiber coiling assembly is reduced, and then the detection precision of the optical fiber pickup is improved.

Description

Technical Field

[0001] The present application relates to the field of sound pickup technology, and in particular to a fiber optic pickup and a fiber optic pickup system. Background Art

[0002] The working principle of the fiber optic pickup is based on the tiny phase changes that occur when the optical fiber is affected by sound waves. When the sound wave propagates near the optical fiber, it causes tiny mechanical deformation in the optical fiber, resulting in a change in the refractive index in the optical fiber, which in turn causes a slight shift in the phase of the optical signal. These phase changes are detected by an optical detector (such as a photodiode or fiber grating sensor) and converted into a corresponding electrical signal. The electrical signal is then sent to the signal processing system for processing, including steps such as amplification, filtering, and digitization to improve signal quality and adapt to specific application requirements. Ultimately, by decoding and reconstructing the processed electrical signal, the original sound signal can be obtained, realizing the pickup and transmission of sound.

[0003] The fiber coil assembly is a component with optical fiber wound inside the fiber optic pickup. In related technologies, when the fiber optic pickup is installed on a device that generates vibrations, the vibrations generated by the device will be transmitted to the shell of the fiber optic pickup through the shell. Based on this, if the fiber coil assembly is not installed stably inside the fiber optic pickup, or the fiber coil assembly is rigidly connected to the shell, the fiber coil assembly will vibrate with the shell, thereby affecting the detection accuracy of the fiber optic pickup. Utility Model Content

[0004] In view of this, the present application provides a fiber optic pickup to solve the problem of relatively low detection accuracy when the fiber optic pickup is installed on a device that generates vibration. The present application also provides a fiber optic pickup system including the above fiber optic pickup.

[0005] In order to achieve the above objectives, this application provides the following technical solutions:

[0006] An optical fiber pickup, comprising:

[0007] A housing is provided with a housing cavity, wherein the interior of the housing cavity has a mounting surface perpendicular to the first direction;

[0008] a fiber coil assembly fixedly disposed on the mounting surface and having a fiber coil surface arranged around a first axis, wherein the first axis extends in a second direction, and the second direction forms an angle with the first direction;

[0009] The fiber coil assembly is provided with a first fixing part and a second fixing part at both ends along the second direction, and the first fixing part and the second fixing part are both connected to the shock absorbing assembly to fix the fiber coil assembly on the mounting surface through the shock absorbing assembly.

[0010] Optionally, the fiber coil assembly includes:

[0011] A fiber disc wheel, used for forming the fiber disc surface;

[0012] An optical fiber coil is wound on the fiber coil surface;

[0013] The fixing member is fixedly connected to the fiber disc wheel and extends along the second direction. The fixing member is respectively provided with the first fixing part and the second fixing part at two ends in the second direction.

[0014] Optionally, the fixing member is a fixed shaft, and a first radial protrusion is formed on a circumferential side surface of the fixed shaft;

[0015] The fiber disc wheel includes a fiber disc portion and a third fixing portion, wherein the fiber disc surface is a circumferential outer surface of the fiber disc portion, and the third fixing portion is a second radial protrusion formed on a circumferential inner surface of the fiber disc portion; and in an assembled state, a first end surface of the first radial protrusion can abut against a second end surface of the second radial protrusion;

[0016] The fixed shaft is connected to the fiber disc wheel by a first bolt, a first connecting hole for connecting to the fiber disc wheel is provided on the first radial protrusion of the fixed shaft, and a second connecting hole for connecting to the fixed shaft is provided on the third fixed portion of the fiber disc wheel, and at least one of the first connecting hole and the second connecting hole is an arc-shaped hole.

[0017] Optionally, a plurality of the first connection holes are provided, and the plurality of the first connection holes are evenly arranged around the first axis; and / or a plurality of the second connection holes are provided, and the plurality of the second connection holes are evenly arranged around the first axis.

[0018] Optionally, a buffer covering the fiber coil surface is further included, and the buffer is arranged between the fiber coil surface and the optical fiber coil.

[0019] Optionally, it includes a sound receiving component and a sound amplifying device electrically connected to the sound receiving component.

[0020] Optionally, the sound receiving component is a microphone array arranged inside the shell, and a microphone port is provided on the shell in an area corresponding to the microphone array.

[0021] Optionally, the housing includes:

[0022] Cover body;

[0023] a base detachably connected to the cover, wherein the mounting surface is a portion of a surface of the base for forming the accommodating cavity;

[0024] The shock-absorbing assembly includes a shock-absorbing block and a second bolt, and the shock-absorbing block is connected to the base and the fiber coil assembly through the second bolt. The shock-absorbing block is provided with a first threaded hole for connecting to the base and a second threaded hole for connecting to the fiber coil assembly, and the setting directions of the threads in the first threaded hole and the second threaded hole are opposite.

[0025] A fiber optic pickup system comprises a protective tube and the fiber optic pickup as described above, wherein the optical fiber of the fiber optic coil led out from the pickup is passed through the protective tube.

[0026] Optionally, the end region of the protective tube close to the pickup is a bellows, and the shell is provided with a threaded hole threadedly connected to the bellows.

[0027] The fiber optic pickup provided in the present application includes a shell and a fiber coil assembly, wherein a accommodating cavity is formed inside the shell, and the accommodating cavity has a mounting surface perpendicular to the first direction, and a first fixing part and a second fixing part are provided at both ends of the fiber coil assembly in the second direction to fix the fiber coil assembly on the above-mentioned mounting surface. There are two fixing points on the fiber coil assembly, which can effectively improve the stability of the fixation. In addition, a shock-absorbing assembly is provided between the first fixing part, the second fixing part and the mounting surface. In this way, by avoiding a rigid connection between the optical fiber assembly and the shell, the influence of the shell vibration on the fiber coil assembly can be reduced, thereby improving the detection accuracy of the fiber optic pickup. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without any creative work.

[0029] Figure 1 A three-dimensional diagram of the fiber optic pickup provided in this embodiment;

[0030] Figure 2 for Figure 1 A schematic diagram of the structure of the optical fiber pickup after removing the cover;

[0031] Figure 3 for Figure 2 Sectional view at AA;

[0032] Figure 4 A cross-sectional view of the fiber coil assembly provided in this embodiment;

[0033] Figure 5 A side view of the fiber tray assembly provided in this embodiment;

[0034] Figure 6 A schematic diagram of the structure of the fiber coil assembly provided in this embodiment;

[0035] Figure 7 Schematic diagram of the structure of the fiber disc wheel;

[0036] Figure 8 It is a structural diagram of the shock-absorbing block;

[0037] Figure 9 This is a schematic diagram of the structure of the cascaded fiber optic pickup system.

[0038] Figure 10 This is a schematic diagram of the structure of the protective tube in a straight state;

[0039] Figure 11 Schematic diagram of the structure of the protective tube in a bent state.

[0040] Figures 1-11 middle:

[0041] 1-housing, 2-fiber coil assembly, 3-shock absorption assembly, 4-buffer, 5-microphone port, 6-third threaded hole, 7-optical fiber, 8-protective tube, 9-connecting column, 10-first bolt, 11-first connecting hole, 12-second connecting hole, 13-limiting member;

[0042] 101 - cover, 102 - base, 201 - fiber reel, 202 - optical fiber coil, 203 - fixing piece, 301 - shock-absorbing block, 302 - second bolt, 1301 - notch;

[0043] 2011-fiber coil part, 2012-third fixing part, 2031-first fixing part, 2032-second fixing part, 2033-first radial protrusion, 3011-first threaded hole, 3012-second threaded hole. DETAILED DESCRIPTION

[0044] The present application provides a fiber optic pickup and a fiber optic pickup system including the fiber optic pickup.

[0045] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0046] This embodiment of the present application provides a fiber optic pickup that can be installed on equipment to be inspected. For example, in coal, thermal power, and port transportation scenarios, conveyor belts are often impacted by material impact and component anomalies, often leading to failures that can severely impact the entire production process and cause safety incidents. This fiber optic pickup can effectively detect conveyor belt deviation, wear, and roller anomalies in advance, improving the safety of equipment in these scenarios.

[0047] like Figures 1 to 11 As shown, the optical fiber pickup in the embodiment of the present application includes a housing 1 and a fiber coil assembly 2, wherein the housing 1 is the outer shell of the optical fiber pickup, and a receiving cavity is formed inside the housing 1, and the receiving cavity is used to provide an installation space for the fiber coil assembly 2, etc. The interior of the receiving cavity has a vertical direction (the first direction can be referred to the appendix of the specification) Figure 3 ) of the mounting surface (i.e., the surface in the accommodating cavity for mounting the fiber coil assembly 2); the fiber coil assembly 2 is fixedly arranged on the mounting surface and has a fiber coil surface arranged around the first axis (i.e., the surface in the fiber coil assembly 2 for winding the optical fiber 7 to form the optical fiber coil 202), and the extending direction of the first axis is the second direction (the second direction can be referred to in the appendix of the specification). Figure 3 ), and the second direction has an included angle with the first direction, that is, the extension direction of the first axis is parallel to the mounting surface, or the extension direction of the first axis has an included angle other than 90° with the mounting surface.

[0048] Specifically, such as Figure 2 and Figure 3 As shown, the fiber coil assembly 2 is provided with a first fixing portion 2031 and a second fixing portion 2032 at both ends along the second direction, and both the first fixing portion 2031 and the second fixing portion 2032 are connected to the shock-absorbing assembly 3, thereby securing the fiber coil assembly 2 to the mounting surface via the shock-absorbing assembly 3. Exemplarily, the first fixing portion 2031 and the second fixing portion 2032 are two through-holes provided on the fiber coil assembly 2, and the two through-holes are respectively located at both ends of the fiber coil assembly 2 along the second direction. The fiber coil assembly 2 is detachably connected to the shock-absorbing assembly 3 via bolts or screws. Furthermore, exemplarily, the first fixing portion 2031 and the second fixing portion 2032 are connecting planes provided at both ends of the fiber coil assembly 2 along the second direction, and the fiber coil assembly 2 is connected to the shock-absorbing assembly 3 via gluing.

[0049] It should be noted that the shock-absorbing component 3 mentioned above is a component with a shock-absorbing function in the prior art. For example, it can be a shock-absorbing structure formed with a shock-absorbing block 301 (such as a rubber shock-absorbing block) as the shock-absorbing body. For another example, it can also be a shock-absorbing structure formed with a spring as the shock-absorbing body. The specific design can be adaptively adapted to the needs during actual application. In addition, the connection method between the shock-absorbing component 3 and the fiber coil component 2, and the shock-absorbing component 3 and the mounting surface can be a fixed connection method such as gluing or welding; or a detachable connection method such as threaded connection or snap-on connection. Accordingly, the connection structure used to achieve the connection in the above-mentioned components (including the shock-absorbing component 3, the fiber coil component 2, and the component forming the mounting surface) can be adaptively designed according to the connection method.

[0050] It should also be noted that the mounting surface can be formed in the shell 1, that is, the mounting surface is a part of the inner surface of the shell 1. In addition, the mounting surface can also be formed in the mounting seat in the shell 1, that is, a mounting seat is fixedly or detachably provided inside the shell 1, and the mounting seat is used to fix the fiber coil assembly 2 in the accommodating cavity. At this time, the surface of the mounting seat used to install the fiber coil assembly 2 is the mounting surface.

[0051] The above-mentioned optical fiber pickup is provided with a first fixing part 2031 and a second fixing part 2032 at both ends of the fiber coil assembly 2 in the second direction so as to fix the fiber coil assembly 2 on the above-mentioned mounting surface. The fiber coil assembly 2 has two fixing points, which can effectively improve the stability of the fixation. In addition, a shock-absorbing assembly 3 is provided between the first fixing part 2031, the second fixing part 2032 and the mounting surface. In this way, by avoiding a rigid connection between the fiber coil assembly 2 and the housing 1, the influence of the vibration of the housing 1 on the fiber coil assembly 2 can be reduced, thereby improving the detection accuracy of the optical fiber pickup.

[0052] In some embodiments, the fiber winding assembly 2 includes a fiber winding wheel 201, an optical fiber coil 202 and a fixing member 203, wherein the fiber winding wheel 201 is used to form a fiber winding surface, and the optical fiber coil 202 is wound on the fiber winding surface; the fixing member 203 is fixedly connected to the fiber winding wheel 201 and extends along the second direction, and the fixing member 203 is respectively provided with a first fixing part 2031 and a second fixing part 2032 at both ends of the second direction.

[0053] Specifically, in an exemplary embodiment, Figure 2 and Figure 3As shown, the circumferential outer side surface of the fiber winding wheel 201 is the fiber winding surface, and the optical fiber 7 is spirally wound on the fiber winding surface in a counterclockwise or clockwise direction to form an optical fiber coil 202. The fixing member 203 is fixedly connected to the fiber winding wheel 201 through a connecting structure such as bolts, and the fixing member 203 extends along the second direction, and the fixing member 203 is respectively provided with a first fixing part 2031 and a second fixing part 2032 at both ends of the second direction, so that the fiber winding assembly 2 can be fixed to the installation surface through the fixing member 203.

[0054] It should be noted that: the fixing member 203 extends along the second direction, but this does not mean that the fixing member 203 coincides with the first axis. In specific implementation, it is sufficient to ensure that except for the first fixed part 2031 and the second fixed part 2032 in the fiber coil assembly 2, the rest are in a suspended state to avoid the vibration of the shell 1 being transmitted to the fiber coil assembly 2 through direct contact between the shell 1 and the fiber coil assembly 2, thereby generating noise and affecting the detection accuracy of the optical fiber pickup.

[0055] It should be understood that the above is only an exemplary composition of the fiber coiling assembly 2, but the present application is not limited thereto. For example, in some other embodiments, the fiber coiling wheel 201 and the fixing member 203 can also be an integral structure, that is, the fiber coiling wheel 201 and the fixing member 203 are integrally formed.

[0056] Further, such as Figure 7As shown, a limiting member 13 is provided on the fiber disc 201 to limit the winding area of the optical fiber coil 202 on the fiber disc 201. Exemplarily, the limiting member 13 can be an annular protrusion provided on the fiber disc 201, and the annular protrusion is provided on the circumferential outer side of the fiber disc 201. When the required winding area of the optical fiber coil 202 on the fiber disc 201 is large, the optical fiber coil 202 is wound around the entire circumferential outer side of the fiber disc 201. When the required winding area of the optical fiber coil 202 on the fiber disc 201 is small, the optical fiber coil 202 is wound from one side of the fiber disc 201 to the position of the limiting member 13, thereby limiting the winding area of the optical fiber coil 202 on the fiber disc 201. As another example, the limiting member 13 can also be a fixing sleeve that can fix the optical fiber coil 202 on the fiber winding wheel 201. When the optical fiber coil 202 required on the fiber winding wheel 201 does not need to wrap around the entire fiber winding wheel 201, after the optical fiber coil 202 is wound on the appropriate area on the fiber winding wheel 201, the fixing sleeve is placed on the outside of the end area of the optical fiber coil 202 to limit the winding area of the optical fiber coil 202 on the fiber winding wheel 201. By arranging the fiber reel 201 in the accommodating cavity of the shell 1, the optical fiber coil 202 is wound on the circumferential outer side of the fiber reel 201, and by arranging a limiter 13 on the fiber reel 201 to limit the winding area of the optical fiber coil 202 on the fiber reel 201, when the sizes of the optical fibers wound on the fiber reel 201 are different, the limiter 13 can limit the optical fiber wound on the fiber reel 201 to prevent the optical fiber on the fiber reel 201 from loosening, avoid the optical fiber in the pickup from being knotted or broken, thereby protecting the optical fiber and improving the service life of the optical fiber.

[0057] Based on the aforementioned arrangement of the limiting member 13, the limiting member 13 is movably connected to the fiber winding wheel 201 and positioned by a locking member (not shown) to secure the position of the limiting member 13 on the fiber winding wheel 201 after its movement. Specifically, when the area on the fiber winding wheel 201 where the optical fiber coil 202 is to be wound changes, the limiting member 13 is moved along the fiber winding wheel 201 to the target position, and then positioned by the locking member to finally secure the limiting member 13 at the target position on the fiber winding wheel 201. This arrangement facilitates adjustment of the position of the limiting member 13, thereby enhancing the convenience of adjusting the winding area of the optical fiber coil 202 on the fiber winding wheel 201.

[0058] It should be noted that the locking member may be a pin or a bolt, etc., and may be adaptively designed according to specific needs, and this application does not make any specific limitations on this.

[0059] Furthermore, in some embodiments, Figure 7As shown, the limiting member 13 is a limiting ring disposed circumferentially outside the fiber reel 201. This improves the limiting effect of the limiting member 13 on the optical fiber coil 202 and improves the smoothness of the winding of the optical fiber coil 202 on the fiber reel 201. Furthermore, the limiting ring has a notch 1301, through which the optical fiber coil 202 can be guided. The provision of the notch 1301 facilitates the guidance of the optical fiber 7 of the optical fiber coil 202 through the notch 1301, thereby facilitating the winding of the optical fiber 7 using various winding methods on the fiber reel 201. Preferably, the notch 1301 is a planar notch 1301, which facilitates the guidance of the optical fiber 7 and ensures the smoothness of the winding of the optical fiber 7 on the fiber reel 201.

[0060] like Figures 4 to 6 As shown, in some embodiments, the fixing member 203 is a fixed shaft, and a first radial protrusion 2033 is formed on the circumferential side surface of the fixed shaft; the fiber disc wheel 201 includes a fiber disc part 2011 and a third fixed part 2012, the fiber disc surface is the circumferential outer side surface of the fiber disc part 2011, and the third fixed part 2012 is a second radial protrusion formed on the circumferential inner side surface of the fiber disc part 2011; and in the assembled state, the first end surface of the first radial protrusion 2033 can abut the second end surface of the second radial protrusion; the fixed shaft is connected to the fiber disc wheel 201 by a first bolt 10, and a first connecting hole 11 for connecting to the fiber disc wheel 201 is provided on the first radial protrusion 2033 of the fixed shaft, and a second connecting hole 12 for connecting to the fixed shaft is provided on the third fixed part 2012 of the fiber disc wheel 201, and at least one of the first connecting hole 11 and the second connecting hole 12 is an arc hole. Such an arrangement makes it easy to adjust the installation position by rotating the fiber reel 201, thereby facilitating adjustment of the positions of the inlet and outlet of the optical fiber 7, making installation more convenient.

[0061] Furthermore, a plurality of first connection holes 11 are provided, and the plurality of first connection holes 11 are evenly arranged around the first axis; and / or a plurality of second connection holes 12 are provided, and the plurality of second connection holes 12 are evenly arranged around the first axis. This can increase the adjustment range of the fiber disc 201.

[0062] In addition, if Figure 4 As shown, in some embodiments, the fiber optic pickup further includes a buffer member 4 covering the fiber winding surface, and the buffer member 4 is disposed between the fiber winding surface and the fiber coil 202. This arrangement, on the one hand, protects the optical fiber 7 from damage caused by external forces during the winding process; on the other hand, it further enhances shock absorption, further reducing the impact of vibrations of the housing 1 on the optical fiber 7, thereby improving the detection accuracy of the fiber optic pickup. Furthermore, the buffer member 4 is a soft material layer that wraps around the fiber winding surface, for example, a silicone layer or a polyvinyl chloride layer.

[0063] Typically, a fiber optic microphone is installed on the equipment to be installed (for example, in a mine working environment, the fiber optic microphone is usually installed on a belt conveyor). By setting up a sound receiving component, the fiber optic microphone can receive sound information through the air medium. In other words, the fiber optic microphone can not only detect the component to be detected through the optical fiber, but also detect whether the equipment to be installed is in a fault through the air medium.

[0064] It should be noted that the sound receiving component may be a sound receiving hole opened on the housing 1 , or may be a microphone installed on the housing 1 .

[0065] Furthermore, when the sound receiving component is a sound receiving hole provided in the housing 1, the sound receiving hole can be blocked by a sound insulation board, and the sound insulation board is detachably connected to the housing 1. As can be seen from the above, when the fiber optic pickup is mounted on the mounting device and the sound insulation board is used to block the sound receiving hole, the fiber optic pickup can monitor the operating status of the mounting device through the vibration of the mounting device. In other words, when the sound receiving hole is not needed, the sound insulation board can be used to block the sound receiving hole; when the sound receiving hole is needed, the sound insulation board can be released from the blockage of the sound receiving hole.

[0066] It should be noted that there is no limitation on the detachable connection method between the sound insulation board and the shell 1, and the detachable connection method can be at least one of interference fit, bolt connection, magnetic connection, snap connection, etc., or a combination thereof.

[0067] When the sound receiving component is a microphone, in some further embodiments, a sound amplifying device is provided in the accommodating cavity and electrically connected to the microphone. In this way, the sound amplifying device amplifies the sound signal collected by the microphone, which is more conducive to improving the detection accuracy of the optical fiber pickup. For example, Figure 1 As shown, the sound receiving component is a microphone array disposed inside the housing 1, and a microphone port 5 is provided on the housing 1 in an area corresponding to the microphone array. During operation, the microphone disposed in the receiving cavity picks up sound through the microphone port 5 and transmits the sound signal to the sound amplification device, which amplifies the sound signal so that the optical fiber 7 inside the pickup can capture the sound signal, thereby achieving detection of the target device.

[0068] Furthermore, in some embodiments, a controller is provided that can control the microphone to be turned on and off. Thus, when the microphone is not needed to receive sound through the air medium, the microphone can be turned off by the controller.

[0069] It should be noted that the sound amplifying device can be a device that can amplify sound, such as a loudspeaker. Its specific structure can refer to the existing technology, so this application will not go into details here.

[0070] like Figures 1 to 3 As shown, in some embodiments, the housing 1 includes a cover 101 and a base 102. The cover 101 and the base are connected by a snap fastener or a detachable connection structure such as bolts. Furthermore, in some embodiments, a seal is provided between the cover 101 and the base 102. This not only provides a waterproof seal, but also, because the seal is typically made of a shock-absorbing material such as rubber or polytetrafluoroethylene, it also provides a shock-absorbing effect, reducing the impact of vibrations of the housing 1 on the sound received by the fiber optic pickup, thereby improving the accuracy of the fiber optic pickup in detecting sound.

[0071] On the basis of the housing 1 including the cover 101 and the base 102, the mounting surface is a part of the surface of the base 102 for forming the accommodating cavity, that is, the fiber coil assembly 2 is mounted on the base 102 through the shock absorbing assembly 3. Specifically, Figure 2 、 Figure 3 and Figure 8 As shown, the shock-absorbing assembly 3 includes a shock-absorbing block 301 and a second bolt 302. The shock-absorbing block 301 is connected to the base 102 and the fiber coiling assembly 2 via the second bolt 302. The shock-absorbing block 301 is provided with a first threaded hole 3011 for connecting to the base 102 and a second threaded hole 3012 for connecting to the fiber coiling assembly 2. The threads in the first threaded hole 3011 and the second threaded hole 3012 are arranged in opposite directions. This arrangement, with its reverse thread design, effectively prevents silicone distortion caused by rotating the screws during installation, thereby ensuring the shock-absorbing effect of the shock-absorbing assembly 3. It also improves the installation accuracy of the fiber coiling assembly 2 and prevents collisions between the fiber coiling wheel 201 and the base 102 and cover 101 under strong vibration conditions due to installation errors, thereby improving the detection accuracy of the fiber pickup under strong vibration conditions.

[0072] Further, such as Figure 3 As shown, the mounting surface of the base 102 includes a connecting post 9 protruding toward the accommodating cavity. A stepped through-hole is provided along the axis of the connecting post 9 to facilitate connection of the shock absorber 301 to the connecting post 9 via a second bolt 302. The provision of the connecting post 9, on the one hand, conceals the second bolt 302, thereby improving the flatness of the outer surface of the base 102 and facilitating installation of the fiber optic pickup. On the other hand, during implementation, the height of the connecting post 9 can be adjusted to vary the gap between the fiber reel 201 and the base 102 and cover 101, ensuring that the optical fiber 7 does not come into contact with the base 102 or cover 101 after being wound around the fiber reel 201.

[0073] A fiber optic pickup system includes a fiber optic pickup. Since the fiber optic pickup system includes the fiber optic pickup, the beneficial effects of the fiber optic pickup system brought by the fiber optic pickup are described above and will not be repeated here.

[0074] Among them, Figure 9 As shown, the fiber optic pickup system includes a protective tube 8 and a fiber optic pickup. The optical fiber 7 led from the pickup by the optical fiber coil 202 is passed through the protective tube 8. The fiber optic pickup system includes multiple fiber optic pickups and multiple protective tubes 8, wherein the fiber optic pickups and protective tubes 8 are arranged in an alternating cycle. The optical fiber 7 led from the optical fiber coil 202 of the fiber optic pickup is passed through the protective tube 8 to achieve cascading of the fiber optic pickups.

[0075] In some embodiments, the end area of the protective tube 8 near the optical fiber pickup is a corrugated tube. Specifically, the corrugated tube has good bending performance and can be bent as needed, making it convenient to use in complex environments. Figure 2 As shown, the shell 1 is provided with a third threaded hole 6 which is threadedly connected to the bellows. Such a setting can improve the stability of the connection between the bellows and the shell 1, and can improve the convenience of the connection between the bellows and the shell 1, and improve the installation efficiency of the bellows and the shell 1.

[0076] The location of the third threaded hole 6 on the housing 1 is not limited. The third threaded hole 6 can be provided on the base 102 or on the cover 101 , or partially on the base 102 and partially on the cover 101 .

[0077] It should be noted that the setting area of the bellows in the protective tube 8 is not limited here. The bellows can be set in any part of the protective tube 8. Of course, in order to improve the bending performance of the protective tube 8, the entire protective tube 8 can be set as a bellows structure.

[0078] See Figure 10 and 11 When the fiber optic pickup system is arranged in the above-mentioned cascade manner, the optical fiber 7 located in the protective tube 8 will be twisted as the protective tube 8 bends. In order to ensure that the optical fiber coil 202 fixed on the fiber reel 201 in the fiber optic pickup is not pulled and thus causes loss, a fiber surplus area is provided in the housing 1 of the fiber optic pickup. This fiber surplus area is used to provide a place for the excess optical fiber 7. When the optical fiber 7 is twisted as the protective tube 8 bends, it will pull the optical fiber 7 located in the fiber surplus area in the housing 1, thereby preventing the optical fiber coil 202 on the fiber reel 201 from being pulled, thereby achieving the purpose of protecting the optical fiber coil 202 on the fiber reel 201.

[0079] In some embodiments, the fiber optic pickup includes an abutment member connected to the housing 1, which abuts against the bellows to limit the installation position of the bellows. The abutment member can be detachably connected to the housing 1 or integrally formed with the housing 1. Exemplarily, the abutment member is a shock-absorbing structure that has an interference fit with the housing 1. Such an abutment member not only limits the installation position of the bellows but also enhances the vibration resistance of the housing 1, thereby improving the stability of the fiber optic pickup.

[0080] The basic principles of the present application have been described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, and effects mentioned in this application are merely illustrative and not restrictive, and it should not be assumed that these advantages, strengths, and effects are required of each embodiment of this application. In addition, the specific details disclosed above are merely illustrative and facilitating understanding, and are not restrictive. The above details do not limit this application to necessarily being implemented using the above specific details.

[0081] The block diagrams of the devices, devices, equipment, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As will be appreciated by those skilled in the art, these devices, devices, equipment, and systems can be connected, arranged, or configured in any manner. Words such as "include," "comprise," "have," and the like are open-ended words, meaning "including but not limited to," and can be used interchangeably therewith. The words "or" and "and" used herein refer to the words "and / or" and can be used interchangeably therewith, unless the context clearly indicates otherwise. The word "such as" used herein refers to the phrase "such as but not limited to," and can be used interchangeably therewith.

[0082] It should also be noted that in the apparatus, device, and method of the present application, each component or each step can be decomposed and / or recombined, and such decomposition and / or recombination should be regarded as equivalent solutions of the present application.

[0083] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0084] It should be understood that the qualifiers "first", "second", "third", "fourth", "fifth" and "sixth" used in the description of the embodiments of the present application are only used to more clearly illustrate the technical solutions and cannot be used to limit the scope of protection of the present application.

[0085] The above description has been provided for the purpose of illustration and description. Furthermore, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although a number of example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A fiber optic pickup, characterized in that: include: A housing is provided with a housing cavity, wherein the interior of the housing cavity has a mounting surface perpendicular to the first direction; a fiber coil assembly fixedly disposed on the mounting surface and having a fiber coil surface arranged around a first axis, wherein the first axis extends in a second direction, and the second direction forms an angle with the first direction; The fiber coil assembly is provided with a first fixing part and a second fixing part at both ends along the second direction, and the first fixing part and the second fixing part are both connected to the shock absorbing assembly to fix the fiber coil assembly on the mounting surface through the shock absorbing assembly.

2. The optical fiber pickup according to claim 1, wherein: The fiber coil assembly comprises: A fiber disc wheel, used for forming the fiber disc surface; An optical fiber coil is wound on the fiber coil surface; The fixing member is fixedly connected to the fiber disc wheel and extends along the second direction. The fixing member is respectively provided with the first fixing part and the second fixing part at two ends in the second direction.

3. The optical fiber pickup according to claim 2, characterized in that The fixing member is a fixed shaft, and a first radial protrusion is formed on the circumferential side surface of the fixed shaft; The fiber disc wheel includes a fiber disc portion and a third fixing portion, wherein the fiber disc surface is a circumferential outer surface of the fiber disc portion, and the third fixing portion is a second radial protrusion formed on a circumferential inner surface of the fiber disc portion; and in an assembled state, a first end surface of the first radial protrusion can abut against a second end surface of the second radial protrusion; The fixed shaft is connected to the fiber disc wheel by a first bolt, a first connecting hole for connecting to the fiber disc wheel is provided on the first radial protrusion of the fixed shaft, and a second connecting hole for connecting to the fixed shaft is provided on the third fixed portion of the fiber disc wheel, and at least one of the first connecting hole and the second connecting hole is an arc-shaped hole.

4. The optical fiber pickup according to claim 3, characterized in that There are multiple first connection holes, and the multiple first connection holes are evenly arranged around the first axis; and / or there are multiple second connection holes, and the multiple second connection holes are evenly arranged around the first axis.

5. The optical fiber pickup according to any one of claims 2 to 4, characterized in that: The device further comprises a buffer covering the fiber coil surface, and the buffer is arranged between the fiber coil surface and the optical fiber coil.

6. The optical fiber pickup according to claim 5, characterized in that The invention comprises a sound receiving component and a sound amplifying device electrically connected to the sound receiving component.

7. The optical fiber pickup according to claim 6, characterized in that The sound receiving component is a microphone array arranged inside the shell, and a microphone port is arranged on the shell in an area corresponding to the microphone array.

8. The optical fiber pickup according to claim 1, wherein: The housing comprises: Cover body; a base detachably connected to the cover, wherein the mounting surface is a portion of a surface of the base for forming the accommodating cavity; The shock-absorbing assembly includes a shock-absorbing block and a second bolt, and the shock-absorbing block is connected to the base and the fiber coil assembly through the second bolt. The shock-absorbing block is provided with a first threaded hole for connecting to the base and a second threaded hole for connecting to the fiber coil assembly, and the setting directions of the threads in the first threaded hole and the second threaded hole are opposite.

9. A fiber optic pickup system, characterized in that: It comprises a protective tube and the optical fiber pickup according to any one of claims 1 to 8, wherein the optical fiber coil and the optical fiber led out from the pickup are passed through the protective tube.

10. The optical fiber pickup system according to claim 9, characterized in that: The end area of the protective tube close to the pickup is a bellows, and the shell is provided with a threaded hole threadedly connected to the bellows.

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