Node acquisition device

Abstract

The utility model belongs to the technical field of seismic exploration node instruments, and discloses a node acquisition device, which comprises an upper shell, a lower shell, a sealing element, a circuit board, a detector and a caudal vertebra. An inserting ring table is arranged on the periphery of the bottom of the upper shell in a protruding mode, the upper shell and the lower shell are buckled, the inserting ring table is inserted into the lower shell and abuts against the inner wall of the lower shell, the sealing pieces are clamped between the inserting ring table and the inner wall of the lower shell, and the multiple sealing pieces are arranged at intervals in the axial direction of the inserting ring table; the circuit board is arranged in the upper shell, and a damping structure is arranged between the circuit board and the inner wall of the upper shell; the detector is in communication connection with the circuit board, a plurality of clamping plates are arranged in the lower shell, a clamping space is defined by the clamping plates, and the detector is arranged in the clamping space and tightly attached to the clamping plates; the caudal vertebra is connected to the bottom of the lower shell. The node acquisition device is good in sealing performance and high in waterproof grade, the built-in detector is good in fixing effect and not prone to shaking, and the data acquisition quality is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of seismic exploration node instruments, and in particular to a node acquisition device. Background Technology

[0002] Currently, the most commonly used equipment in seismic exploration is the nodal instrument, which uses satellite timing technology to acquire and record seismic data in a "self-acquisition, distributed recording" manner. Each nodal instrument works independently, receiving reflected waves formed when the excitation wave from the seismic source encounters different strata through an external or built-in geophone, and storing them in the nodal instrument's memory.

[0003] In practical applications, nodal instruments need to be buried underground and coupled with the ground as much as possible to accurately pick up ground vibrations and minimize the impact of ground interference. However, existing nodal instruments cannot guarantee a tight fit between the housing and the geophone. When seismic wave signals arrive from different directions, the geophone may shake, resulting in additional resonant signals in the picked-up seismic wave signals, making it difficult to guarantee the quality of seismic data acquisition. Furthermore, the nodal instrument housing is not sufficiently airtight, allowing moisture to easily enter the nodal instrument, damaging internal components and affecting its normal operation.

[0004] Therefore, there is an urgent need for a node acquisition device to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a node acquisition device with good housing sealing, high waterproof rating, and good fixation of the built-in detector, which is not easy to shake and effectively improves the data acquisition quality.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] Node acquisition device, including:

[0008] The upper housing, lower housing, and sealing elements are provided. The bottom periphery of the upper housing is provided with a protruding insertion ring platform. The upper housing and the lower housing are fastened together. The insertion ring platform is inserted into the lower housing and abuts against the inner wall of the lower housing. The sealing elements are sandwiched between the insertion ring platform and the inner wall of the lower housing. Multiple sealing elements are provided and are arranged at intervals along the axial direction of the insertion ring platform.

[0009] A circuit board is disposed inside the upper housing, and a shock-absorbing structure is provided between the circuit board and the inner wall of the upper housing;

[0010] The detector is connected to the circuit board. Multiple snap-fit ​​plates are provided inside the lower housing. The multiple snap-fit ​​plates surround to form a snap-fit ​​space. The cross-sectional shape of the snap-fit ​​space matches the cross-sectional shape of the detector. The detector is disposed in the snap-fit ​​space and is tightly fitted to the snap-fit ​​plates.

[0011] The tailbone is connected to the bottom of the lower housing.

[0012] Optionally, the inner top wall of the upper housing is provided with a mounting post, the shock absorption structure includes a shock absorption pad, the shock absorption pad is disposed on the bottom surface of the mounting post, and the first mounting fastener passes through the mounting hole on the circuit board and the shock absorption pad in sequence, and is fixedly connected to the mounting post.

[0013] Optionally, the upper housing is further provided with an upper positioning post, the bottom surface of which protrudes from the bottom surface of the insertion ring platform, and the lower housing is provided with a lower positioning post corresponding to the upper positioning post. When the upper housing and the lower housing are fastened together, the upper positioning post and the lower positioning post are fixedly connected.

[0014] Optionally, the upper end face of the lower positioning post is provided with a positioning groove that can be fitted over the upper positioning post. A sealing gasket is provided at the bottom of the positioning groove. When the upper housing and the lower housing are fastened together, the upper positioning post is inserted into the positioning groove and abuts against the sealing gasket.

[0015] Optionally, the upper housing has a first threaded hole coaxial with the upper positioning post, and a second mounting fastener passes through the first threaded hole and is screwed to the lower positioning post.

[0016] Optionally, multiple upper positioning posts are provided, and the multiple upper positioning posts are arranged at intervals along the circumference of the upper housing. The lower positioning posts, the first threaded hole and the second mounting fastener are correspondingly provided in multiples.

[0017] Optionally, the node acquisition device further includes a battery assembly, which is installed inside the lower housing and located above the detector. The battery assembly is electrically connected to the circuit board and the detector, respectively.

[0018] Optionally, the battery assembly includes a battery pack and a battery protective shell. The battery protective shell is fitted over the battery pack. A mounting platform is provided inside the lower housing. The top surface of the mounting platform is higher than the top of the detector. A third mounting fastener passes through the external ear hole of the battery protective shell and is fixedly connected to the mounting platform.

[0019] Optionally, reinforcing ribs are provided on the inner walls of the upper shell and / or the lower shell.

[0020] Optionally, the outer wall of the lower housing is cone-shaped.

[0021] The beneficial effects of this utility model are:

[0022] The node acquisition device provided by this utility model houses both the circuit board and the detector within a cavity formed by the interlocking of the upper and lower housings, reducing cable routing and facilitating installation and portability. Simultaneously, a protruding insertion ring is provided along the bottom periphery of the upper housing. When the upper and lower housings are interlocked, the insertion ring inserts into the lower housing and abuts against its inner wall. A sealing element is sandwiched between the insertion ring and the inner wall of the lower housing to seal the connection between the upper and lower housings. Furthermore, multiple sealing elements are provided and spaced apart along the axial direction of the insertion ring, providing multiple seals and a higher level of waterproofing. A shock-absorbing structure is provided between the circuit board and the inner wall of the upper housing, effectively mitigating the impact of vibration on the circuit board, protecting its performance, and increasing reliability. Multiple snap-fit ​​plates are provided inside the lower housing, forming a mounting space. The cross-sectional shape of the mounting space matches the cross-sectional shape of the detector, and the detector is placed within the mounting space and tightly fitted against the snap-fit ​​plates. The built-in detector provides better fixation, reduces vibration, and effectively improves data acquisition quality. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0024] Figure 1 This is a top view of the node acquisition device provided in this embodiment of the utility model;

[0025] Figure 2 yes Figure 1 A cross-sectional view along the AA direction;

[0026] Figure 3 yes Figure 2 Cross-sectional view along the BB direction.

[0027] In the picture:

[0028] 1. Upper housing; 11. Insertion ring platform; 12. Mounting post; 13. Upper positioning post; 14. First threaded hole; 15. Reinforcing rib;

[0029] 2. Lower housing; 21. Snap-fit ​​plate; 22. Lower positioning post; 221. Positioning groove; 23. Sealing gasket; 24. Mounting platform;

[0030] 3. Sealing components;

[0031] 4. Circuit board;

[0032] 5. Shock-absorbing pads;

[0033] 6. Detector;

[0034] 7. Coccyx;

[0035] 81. First, install the fasteners; 82. Second, install the fasteners; 83. Third, install the fasteners;

[0036] 9. Battery assembly. Detailed Implementation

[0037] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0040] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0041] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0042] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0043] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0044] In the description of this utility model, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this utility model, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0045] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0046] This embodiment provides a node acquisition device, such as... Figure 1 and Figure 2 As shown, the node acquisition device includes an upper housing 1, a lower housing 2, a sealing element 3, a circuit board 4, a shock-absorbing structure, a detector 6, a tail cone 7, and a battery assembly 9.

[0047] The upper shell 1 and lower shell 2 are fastened together to form a sealed cavity. The sealing element 3, circuit board 4, shock-absorbing structure, detector 6, and battery assembly 9 are all housed within the cavity to reduce cable routing and facilitate installation and transport. The tail cone 7 is connected to the bottom of the lower shell 2. During use, the tail cone 7 must be inserted into the underground soil to facilitate seismic data acquisition.

[0048] Optionally, continue to refer to Figure 1 and Figure 2The upper housing 1 is a circular or square cap with a concave cavity, and the lower housing 2 is a conical cylinder. A connecting ring 11 protrudes from the bottom periphery of the upper housing 1. When the upper housing 1 and lower housing 2 are fastened together, the connecting ring 11 inserts into the lower housing 2 and abuts against its inner wall. This connection allows for a detachable connection between the upper housing 1 and lower housing 2, and the connecting ring 11 also serves as a positioning element, ensuring the accuracy of the mating between the upper housing 1 and lower housing 2.

[0049] In this embodiment, the upper housing 1 is a circular cap, and the lower housing 2 is a conical cylinder. The connection between the upper housing 1 and the lower housing 2 is a smooth transition, and the outer wall of the lower housing 2 has a smooth, streamlined shape. This design ensures that the node acquisition device is tightly fitted to the ground after being buried, improving its coupling with the ground.

[0050] Furthermore, such as Figure 2 As shown, the sealing element 3 is sandwiched between the insertion ring platform 11 and the inner wall of the lower housing 2 to seal the connection between the upper housing 1 and the lower housing 2.

[0051] Specifically, the outer wall of the insertion ring 11 is provided with a sealing mounting groove along the circumference, and the sealing element 3 is embedded in the sealing mounting groove and abuts against the inner wall of the lower housing 2. In this embodiment, the sealing element 3 is a sealing ring, specifically an "O"-ring, which can prevent external water from leaking into the cavity through the connection between the insertion ring 11 and the lower housing 2, effectively improving the sealing performance of the connection between the insertion ring 11 and the lower housing 2. For example, the material of the sealing element 3 can be rubber.

[0052] Furthermore, multiple seals 3 are provided, and the multiple seals 3 are arranged at intervals along the axial direction of the insertion ring platform 11. Multiple seals provide a higher level of waterproofing.

[0053] Continue to refer to Figure 2 The upper housing 1 is also provided with an upper positioning post 13. The bottom surface of the upper positioning post 13 protrudes from the bottom surface of the insertion ring platform 11. The lower housing 2 is provided with a lower positioning post 22 corresponding to the upper positioning post 13. When the upper housing 1 and the lower housing 2 are fastened together, the upper positioning post 13 and the lower positioning post 22 are fixedly connected.

[0054] Specifically, in this embodiment, the upper end face of the lower positioning post 22 is provided with a positioning groove 221 that can be fitted over the upper positioning post 13. A sealing gasket 23 is provided at the bottom of the positioning groove 221. When the upper housing 1 and the lower housing 2 are fastened together, the upper positioning post 13 is inserted into the positioning groove 221 and abuts against the sealing gasket 23. This prevents water from seeping into the receiving cavity from the connection between the bottom surface of the upper positioning post 13 and the bottom of the positioning groove 221, ensuring the waterproof sealing performance at the connection between the upper housing 1 and the lower housing 2. For example, the sealing gasket 23 can be made of rubber.

[0055] More specifically, the upper housing 1 has a first threaded hole 14 coaxial with the upper positioning post 13, and the second mounting fastener 82 passes through the first threaded hole 14 and is screwed to the lower positioning post 22. In this embodiment, a first connecting nut is embedded in the positioning groove 221, a sealing gasket 23 is placed on the upper end face of the first connecting nut, and the second mounting fastener 82 is an internal hexagon screw. When the insertion ring 11 of the upper housing 1 is inserted into the lower housing 2, the internal hexagon screw passes through the first threaded hole 14 and the sealing gasket 23 of the upper housing 1 and is screwed to the first connecting nut. When the internal hexagon screw is tightened with the first connecting nut, the bottom surface of the upper positioning post 13 fully compresses the sealing gasket 23, which not only ensures the sealing performance but also improves the connection reliability between the upper housing 1 and the lower housing 2. Exemplarily, the first connecting nut can be a brass nut in the prior art. The internal hexagon screw is made of stainless steel.

[0056] Preferably, the first threaded hole 14 forms a countersunk hole at the top of the upper housing 1, so that the head of the second mounting fastener 82 is completely recessed into the upper housing 1, thereby ensuring that the surface of the upper housing 1 is flat. This arrangement not only ensures the aesthetics of the upper housing 1, but also prevents loosening and ensures the stability of the connection.

[0057] More specifically, multiple upper positioning posts 13 are provided, and these multiple upper positioning posts 13 are arranged at intervals along the circumference of the upper housing 1. Multiple lower positioning posts 22, first threaded holes 14, and second mounting fasteners 82 are correspondingly provided. The corresponding connection between the multiple upper positioning posts 13 and the multiple lower positioning posts 22 ensures the force balance between the upper housing 1 and the lower housing 2, improves the connection strength, and prevents loosening.

[0058] Optionally, such as Figure 2 As shown, reinforcing ribs 15 are provided on the inner walls of the upper shell 1 and / or the lower shell 2. There are several reinforcing ribs 15 arranged in a crisscross pattern, which are intended to enhance the structural strength of the upper shell 1 and the lower shell 2 and prevent problems such as cracking or deformation of the upper shell 1 or the lower shell 2 due to impacts during transportation.

[0059] Alternatively, two transverse holes are symmetrically provided on both sides of the top of the upper housing 1, and the two ends of the lifting rope pass through the two transverse holes and are knotted and fixed to improve the portability of the node collection device.

[0060] Continue to refer to Figure 2 The lower housing 2 has two symmetrical vertical plane cuts on its sides. The two larger cut surfaces each have four terminals vertically embedded in them. These terminals are made of gold-plated tin-phosphor bronze and are used to connect external devices. The smaller cut surfaces are designed for easy handling by the operator.

[0061] In this embodiment, both the upper shell 1 and the lower shell 2 are made of nylon material. Nylon material has good mechanical properties, wear resistance, and corrosion resistance.

[0062] like Figure 2 and Figure 3 As shown, the circuit board 4 is disposed within the upper housing 1, and a shock-absorbing structure is provided between the circuit board 4 and the inner wall of the upper housing 1. The shock-absorbing structure effectively reduces the impact of vibration on the circuit board 4, protecting its performance and improving its reliability. For example, the circuit board 4 can be a PCB board as used in the prior art.

[0063] Specifically, the inner top wall of the upper housing 1 is provided with a mounting post 12. The shock-absorbing structure includes a shock-absorbing pad 5, which is disposed on the bottom surface of the mounting post 12. A first mounting fastener 81 passes through the mounting hole on the circuit board 4 and the shock-absorbing pad 5 in sequence, and is fixedly connected to the mounting post 12. In this embodiment, the mounting post 12 has a first connecting hole, in which a second mounting nut is embedded. The first mounting fastener 81 is a PCB fixing pan head screw. The PCB fixing pan head screw passes through the mounting hole on the circuit board 4 and the shock-absorbing pad 5 and is screwed to the second connecting nut, thereby achieving reliable fixing of the circuit board 4. Exemplarily, the material of the shock-absorbing pad 5 can be rubber. The material of the PCB fixing pan head screw is stainless steel.

[0064] More specifically, multiple mounting posts 12 are provided, and the multiple mounting posts 12 are distributed at intervals along the circumference of the circuit board 4 to improve the reliability of the connection between the circuit board 4 and the upper housing 1. In this embodiment, there are specifically four mounting posts 12, and the four mounting posts 12 correspond one-to-one with the mounting holes at the four apex corners of the circuit board 4.

[0065] Continue to refer to Figure 2 and Figure 3 The detector 6 is connected to the circuit board 4 for communication. Multiple snap-fit ​​plates 21 are installed inside the lower housing 2, forming a mounting space. The cross-sectional shape of the mounting space matches the cross-sectional shape of the detector 6. The detector 6 is placed within the mounting space and fits tightly against the snap-fit ​​plates 21. The built-in design of the detector 6 provides better fixation, reduces the likelihood of shaking, and effectively improves data acquisition quality.

[0066] Specifically, in this embodiment, four vertically planar arc-shaped cards, namely snap-fit ​​plates 21, are connected to the bottom of the lower housing 2. These arc-shaped cards form a cylindrical mounting space, within which the detector 6 is snapped. The outer wall of the detector 6 is tightly fitted against the inner wall of the arc-shaped cards, which serve to fix the detector 6, reducing the relative displacement between the detector 6 and the lower housing 2, and ensuring a high degree of coupling between the detector 6 and the inner wall of the lower housing 2. Furthermore, the outer wall of the lower housing 2 is a smooth, streamlined cone, allowing for high coupling with the ground, thus ensuring effective coupling between the detector 6 and the ground and guaranteeing the quality of seismic data acquisition.

[0067] Of course, in other embodiments, the snap-fit ​​plate 21 can also be a planar plate, and multiple snap-fit ​​plates 21 can be arranged to form a cuboid mounting space for mounting the detector 6. The shape of the snap-fit ​​plate 21 and the mounting space can be designed and selected according to the shape of the detector 6, and there is no limitation here.

[0068] Continue to refer to Figure 2 and Figure 3 The battery assembly 9 is installed inside the lower housing 2 and is located above the detector 6. The battery assembly 9 is electrically connected to the circuit board 4 and the detector 6 respectively to provide power to the circuit board 4 and the detector 6.

[0069] Specifically, the battery assembly 9 includes a battery pack and a battery protective shell. The battery protective shell is fitted over the battery pack. A mounting platform 24 is provided inside the lower housing 2. The top surface of the mounting platform 24 is higher than the top of the detector 6. A third mounting fastener 83 passes through the external lug hole of the battery protective shell and is fixedly connected to the mounting platform 24. In this embodiment, a second connecting hole is provided on the mounting platform 24, and a third mounting nut is embedded in the second connecting hole. The third mounting fastener 83 is a battery fixing pan head screw. The battery fixing pan head screw passes through the external lug hole of the battery protective shell and is screwed into the third connecting nut, thereby achieving reliable fixation of the battery assembly 9. Exemplarily, the battery fixing pan head screw is made of stainless steel.

[0070] Optionally, the bottom of the lower housing 2 is a frustum into which a tail cone nut is embedded. The tail cone 7 is connected to the lower housing 2 via the self-embedded tail cone nut. Exemplarily, the tail cone nut is a brass nut, and the tail cone 7 is made of stainless steel.

[0071] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A node acquisition device, characterized in that, include: The upper housing (1), the lower housing (2), and the sealing element (3) are provided. The bottom periphery of the upper housing (1) is provided with a protruding insertion ring platform (11). The upper housing (1) is fastened to the lower housing (2). The insertion ring platform (11) is inserted into the lower housing (2) and abuts against the inner wall of the lower housing (2). The sealing element (3) is sandwiched between the insertion ring platform (11) and the inner wall of the lower housing (2). Multiple sealing elements (3) are provided and are arranged at intervals along the axial direction of the insertion ring platform (11). A circuit board (4) is disposed inside the upper housing (1), and a shock-absorbing structure is provided between the circuit board (4) and the inner wall of the upper housing (1); The detector (6) is connected to the circuit board (4). Multiple snap-fit ​​plates (21) are provided in the lower housing (2). The multiple snap-fit ​​plates (21) surround to form a snap-fit ​​space. The cross-sectional shape of the snap-fit ​​space matches the cross-sectional shape of the detector (6). The detector (6) is set in the snap-fit ​​space and is tightly fitted to the snap-fit ​​plates (21). The tailbone (7) is connected to the bottom of the lower shell (2).

2. The node acquisition device according to claim 1, characterized in that, The inner top wall of the upper housing (1) is provided with a mounting post (12). The shock absorption structure includes a shock absorption pad (5). The shock absorption pad (5) is disposed on the bottom surface of the mounting post (12). The first mounting fastener (81) passes through the mounting hole on the circuit board (4) and the shock absorption pad (5) in sequence, and is fixedly connected to the mounting post (12).

3. The node acquisition device according to claim 1, characterized in that, The upper housing (1) is also provided with an upper positioning post (13), the bottom surface of which protrudes from the bottom surface of the insertion ring platform (11). The lower housing (2) is provided with a lower positioning post (22) corresponding to the upper positioning post (13). When the upper housing (1) and the lower housing (2) are fastened together, the upper positioning post (13) and the lower positioning post (22) are fixedly connected.

4. The node acquisition device according to claim 3, characterized in that, The upper end face of the lower positioning post (22) is provided with a positioning groove (221) that can be fitted over the upper positioning post (13). A sealing gasket (23) is provided at the bottom of the positioning groove (221). When the upper housing (1) and the lower housing (2) are fastened together, the upper positioning post (13) is inserted into the positioning groove (221) and abuts against the sealing gasket (23).

5. The node acquisition device according to claim 3, characterized in that, The upper housing (1) has a first threaded hole (14) that is coaxial with the upper positioning post (13), and the second mounting fastener (82) passes through the first threaded hole (14) and is screwed to the lower positioning post (22).

6. The node acquisition device according to claim 5, characterized in that, Multiple upper positioning posts (13) are provided, and the multiple upper positioning posts (13) are arranged at intervals along the circumference of the upper housing (1). Multiple lower positioning posts (22), the first threaded hole (14) and the second mounting fastener (82) are provided respectively.

7. The node acquisition device according to claim 1, characterized in that, The node acquisition device also includes a battery assembly (9), which is installed inside the lower housing (2) and located above the detector (6). The battery assembly (9) is electrically connected to the circuit board (4) and the detector (6) respectively.

8. The node acquisition device according to claim 7, characterized in that, The battery assembly (9) includes a battery pack and a battery protective shell fitted over the battery pack. A mounting platform (24) is provided inside the lower housing (2). The top surface of the mounting platform (24) is higher than the top of the detector (6). A third mounting fastener (83) passes through the external ear hole of the battery protective shell and is fixedly connected to the mounting platform (24).

9. The node acquisition device according to any one of claims 1-8, characterized in that, The inner walls of the upper shell (1) and / or the lower shell (2) are provided with reinforcing ribs (15).

10. The node acquisition device according to any one of claims 1-8, characterized in that, The outer wall of the lower shell (2) is cone-shaped.

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