A wireless geomagnetic compass

Abstract

The application discloses a wireless geomagnetic compass, which comprises a shell, a battery module, a power amplifier module, a magnetic target and a cooling fan, wherein the shell is internally provided with a cavity and a battery mounting groove. The battery module, the power amplifier module and the magnetic target are sequentially arranged in the middle of the cavity, and the battery module and the magnetic target are respectively located on the opposite sides of the power amplifier module, so that the gravity center of the whole machine is in the middle and the counterweight is uniform. The cooling fan is arranged between the battery module and the power amplifier module, the air outlet is directed to the battery module, a cooling channel is formed between the battery module and the inner wall of the battery mounting groove, and the cooling fan and the cooling channel form an active cooling air path, so that the heat of the main heating components is quickly dissipated, and the influence of high temperature on the reliability of the equipment is avoided.

Description

Technical Field

[0001] This invention relates to geomagnetic guidance technology, specifically to a wireless geomagnetic guidance device. Background Technology

[0002] Wireless geomagnetic guidance technology is a core supporting technology for trenchless horizontal directional drilling. As the core equipment of this technology, the wireless geomagnetic guidance instrument interacts with the magnetic field signals of the underground probe and the ground receiving unit to calculate the spatial attitude parameters of the drill bit, such as azimuth, inclination, and depth, in real time. This provides positioning guidance for the precise drilling of the guide hole and is widely used in pipeline crossing projects such as municipal pipelines, power and communication, and oil and gas transportation. It is a key device to ensure the efficiency and trajectory accuracy of trenchless construction.

[0003] The wireless geomagnetic guide is mainly composed of a housing, a geomagnetic guiding component, a power supply module, and an operation display component. The geomagnetic guiding component includes a magnetic target, a power amplifier module, and a receiving antenna. It is the core component for transmitting, amplifying, and receiving magnetic field signals. The power supply module usually uses a detachable battery module to power the whole device. All kinds of components are integrated in the internal cavity of the housing to complete the acquisition, processing, and output of positioning signals.

[0004] Existing integrated wireless geomagnetic guidance systems generally suffer from the following drawbacks: The power amplifier, battery, and magnetic target are the main heat sources during operation, and heat tends to accumulate inside the casing, affecting the positioning accuracy and lifespan of the device. Simultaneously, due to the significant weight of core components such as the battery, power amplifier, and magnetic target, an unbalanced weight distribution can lead to uneven weight distribution, making the system prone to tipping over when placed on the construction site. Furthermore, the magnetic targets and their circuit boards inside the guidance system generate strong alternating magnetic fields during operation, and the power amplifier module produces high-frequency electromagnetic noise during high-current drive, resulting in a reduced geomagnetic signal-to-noise ratio and drift in azimuth and tilt measurements, severely impacting the guidance and positioning accuracy.

[0005] Therefore, how to comprehensively solve the three major problems of poor heat dissipation, unstable center of gravity and electromagnetic interference that exist after the wireless geomagnetic guidance instrument is made into an integrated machine has become the research topic to be solved by this invention. Summary of the Invention

[0006] The purpose of this invention is to provide a wireless geomagnetic guidance instrument to solve the above-mentioned technical problems.

[0007] To achieve the above objectives, this application provides a wireless geomagnetic guidance device, characterized in that it comprises:

[0008] The housing has an internal cavity, an electromagnetic isolation plate is provided in the cavity, the electromagnetic isolation plate divides the cavity into a lower electromagnetic isolation cavity and an upper main cavity, and a battery mounting groove is formed on the surface of the housing.

[0009] The battery module is detachably installed in the battery mounting slot;

[0010] The power amplifier module is located within the main cavity and at the same height as the battery module;

[0011] A magnetic target is vertically disposed within the main cavity and is disposed on opposite sides of the power amplifier module, along with the battery module.

[0012] A cooling fan is positioned between the battery module and the power amplifier module, with the airflow directed towards the battery module.

[0013] The receiving antenna module is disposed within the electromagnetic isolation cavity;

[0014] A heat dissipation channel is provided between the battery module and the inner wall of the battery mounting slot, and the airflow blown out by the cooling fan is discharged from the battery mounting slot through the heat dissipation channel.

[0015] In the above solution, by centrally arranging the battery module, power amplifier module, and magnetic target within the main cavity, and placing the battery module and magnetic target on opposite sides of the power amplifier module, the overall weight distribution is even, improving stability during placement. By installing a cooling fan between the battery module and the power amplifier module, and forming a heat dissipation channel between the battery module and the housing, directional heat dissipation can be achieved for the main heat-generating components, ensuring long-term stable operation of the equipment. By dividing the cavity into a main cavity and an electromagnetic isolation cavity, and placing the receiving antenna module separately within the electromagnetic isolation cavity, interference from other components to the receiving antenna module can be reduced.

[0016] In a further technical solution, a fan opening is provided on the housing, the fan opening connects the cavity and the battery mounting slot, and the cooling fan is fixedly installed at the fan opening.

[0017] In the above solution, by setting a fan vent on the housing that connects the cavity and the battery mounting slot, the geomagnetic guiding component and the battery module in the housing cavity can be actively cooled at the same time, realizing synchronous heat dissipation of the cavity and the battery, and greatly improving the overall heat dissipation efficiency.

[0018] In a further technical solution, the power amplifier module includes heat sink fins, on which fan grooves are formed, the fan grooves facing the fan opening, and the cooling fan is embedded in the fan grooves.

[0019] In the above solution, by setting a fan groove in the heat sink fins of the power amplifier module and embedding the fan therein, the fan can be tightly fitted with the heat sink fins, directly carrying away the heat from the heat sink fins and further improving the heat dissipation efficiency.

[0020] In a further technical solution, the battery module includes a front cover and a main battery housing. The upper and lower surfaces of the main battery housing are provided with guide grooves, which extend along the direction from the fan vent to the front cover. The front cover is provided with heat dissipation airflow holes, which are located at the upper and lower parts of the front cover that extend beyond the main battery housing.

[0021] In the above solution, by making the outer contour of the main battery casing smaller than the front cover to form a heat dissipation channel, and by opening heat dissipation airflow holes in the front cover, it is possible to ensure smooth airflow and quickly remove heat.

[0022] In a further technical solution, an airflow inlet is provided on the housing, and the airflow inlet communicates with the cavity inside the housing.

[0023] In the above solution, by setting an airflow inlet on the shell that communicates with the internal cavity, a continuous external air intake can be provided to the cavity, forming an internal and external airflow circulation and improving the overall heat dissipation capacity.

[0024] In a further technical solution, the two sides of the main battery casing are formed with a stepped structure. The stepped structure includes a connected first step segment, a step surface, and a second step segment. A discharge terminal is provided on the step surface for insertion and mating with the interface on the battery mounting slot.

[0025] In the above solution, by setting a stepped structure on the side of the main battery casing and placing the discharge terminal on the stepped surface, the rear end face and upper and lower surfaces of the main battery casing can form a gap with the inner wall of the battery mounting slot, which facilitates the assembly and contact of the discharge terminal and provides space for heat dissipation.

[0026] In a further technical solution, two discharge terminals are provided on the stepped surface of the battery main casing, and the two discharge terminals are symmetrically arranged on both sides of the battery main casing.

[0027] In the above scheme, by setting two discharge terminals, a power supply redundancy structure is formed. When one discharge terminal fails, the other terminal can still discharge normally, avoiding power interruption due to terminal failure and improving the power supply reliability of the battery module. By symmetrically setting the two discharge terminals on both sides of the battery main casing, the force on both sides is even when the battery module is inserted, avoiding insertion and removal jamming and poor terminal contact due to unbalanced force, while ensuring the stability and symmetry of power supply.

[0028] In a further technical solution, a snap-fit ​​structure is provided on the first stepped section on both sides of the main battery casing. When the battery module is inserted into the battery mounting slot, the snap-fit ​​structure engages with the snap-fit ​​groove on the inner wall of the battery mounting slot. Unlocking components are provided on the inner surfaces on both sides of the front cover, and the unlocking components correspond to the end positions of the snap-fit ​​structure.

[0029] In the above solution, the buckle structure is set as a buckle strip with a protrusion, so that when the battery module is inserted, the protrusion engages with the buckle groove to fix it. The structure is simple and the buckle is reliable. It not only ensures the stability of the assembly, but also allows for smooth disengagement when unlocking, thus balancing the firmness and the convenience of insertion and removal.

[0030] In a further technical solution, guide grooves are provided on the second stepped sections on both sides of the main battery casing, and the guide grooves extend along the insertion direction.

[0031] In the above solution, guide structures are set on both sides of the main battery casing to avoid misalignment or jamming during insertion and removal, thereby improving the smoothness and accuracy of insertion and removal.

[0032] In a further technical solution, an electromagnetic isolation plate is provided inside the cavity of the housing, which divides the cavity into a lower electromagnetic isolation cavity and an upper main cavity. The battery module, power amplifier module and magnetic target are all located inside the main cavity, and a receiving antenna module is provided inside the electromagnetic isolation cavity.

[0033] In the above scheme, the cavity is divided into an electromagnetic isolation cavity and a main cavity by using an electromagnetic isolation plate. The receiving antenna module is independently arranged in the electromagnetic isolation cavity, which effectively blocks the electromagnetic interference of the magnetic target and the power amplifier module to the receiving antenna and improves the signal detection accuracy.

[0034] In a further technical solution, the receiving antenna module includes a three-dimensional antenna and a signal processing circuit board. The three-dimensional antenna is electrically connected to the signal processing circuit board. The three-dimensional antenna is disposed at the bottom of the electromagnetic isolation cavity, and the signal processing circuit board is disposed above the three-dimensional antenna.

[0035] In the above scheme, by rationally designing the position of the three-dimensional antenna and the signal processing circuit board, the three-dimensional antenna is placed at the bottom of the electromagnetic isolation cavity. This ensures that the three-dimensional antenna is closer to the ground, thereby obtaining better signal reception, and also makes the three-dimensional antenna farther away from the main cavity, reducing the electromagnetic interference it is subjected to.

[0036] The wireless geomagnetic guidance device provided in this application has the following technical advantages:

[0037] By arranging the battery module, power amplifier module, and magnetic target in the middle of the main cavity, and placing the battery module and magnetic target on opposite sides of the power amplifier module, the core weight components of the guide can be evenly distributed in the horizontal direction, effectively optimizing the center of gravity of the whole machine. This makes the equipment more stable when placed on the ground, avoiding shaking or tipping caused by uneven weight distribution, and significantly improving the stability and safety of construction operations.

[0038] Meanwhile, by setting a cooling fan facing the battery module between the battery module and the power amplifier module, and reserving a heat dissipation channel between the battery module and the inner wall of the battery mounting slot, the cooling fan can generate directional airflow to quickly remove the heat generated during operation; the airflow flows directionally along the heat dissipation channel and is discharged outside the housing, achieving efficient active heat dissipation, reducing internal temperature rise, avoiding the impact of high temperature on the performance of components, thereby improving the reliability and service life of the equipment.

[0039] Furthermore, by dividing the cavity into a main cavity and an electromagnetic isolation cavity, using an electromagnetic isolation plate for separation, and placing the receiving antenna module separately within the electromagnetic isolation cavity, electromagnetic interference from other components to the receiving antenna module can be reduced. Attached Figure Description

[0040] Figure 1 This is an overall structural diagram of the wireless geomagnetic guidance instrument provided in an embodiment of the present invention;

[0041] Figure 2 This is a schematic diagram of the structure of the wireless geomagnetic guidance device provided in an embodiment of the present invention (the front cover plate and base of the battery module are hidden).

[0042] Figure 3 This is a schematic diagram of the internal structure of the wireless geomagnetic guidance instrument provided in an embodiment of the present invention (rear housing is hidden).

[0043] Figure 4 This is a cross-sectional schematic diagram of the wireless geomagnetic guidance instrument provided in an embodiment of the present invention;

[0044] Figure 5 for Figure 4 A magnified view of a section at point A in the middle;

[0045] Figure 6 This is a schematic diagram showing the relative positions of the geomagnetic guidance components of the wireless geomagnetic guidance instrument provided in an embodiment of the present invention.

[0046] Figure 7 This is a schematic diagram showing the positional relationship between the battery module and the power amplifier module provided in an embodiment of the present invention;

[0047] Figure 8 This is a three-dimensional structural diagram of the battery module provided in an embodiment of the present invention;

[0048] Figure 9 This is another structural view of the wireless geomagnetic guidance instrument provided in an embodiment of the present invention;

[0049] Figure 10 This is a three-dimensional structural diagram of the battery module provided in an embodiment of the present invention;

[0050] Figure 11 for Figure 10 A magnified view of a section at point B in the middle;

[0051] Figure 12 This is another structural view of the battery module provided in an embodiment of the present invention;

[0052] Figure 13 This is a rear view of the battery module provided in an embodiment of the present invention;

[0053] Figure 14 This is a schematic diagram of the main structure of the wireless geomagnetic guidance instrument provided in an embodiment of the present invention;

[0054] Figure 15 This is a front view of the main structure of the wireless geomagnetic guidance instrument provided in an embodiment of the present invention;

[0055] Figure 16 for Figure 15 A magnified view of a section at point C;

[0056] Figure 17 This is a schematic diagram of the internal structure of the wireless geomagnetic guidance instrument provided in an embodiment of the present invention;

[0057] Figure 18 This is a schematic cross-sectional view of the wireless geomagnetic guidance instrument provided in an embodiment of the present invention;

[0058] In the attached diagrams above:

[0059] 1-Housing; 11-Cavity; 111-Electromagnetic isolation cavity; 112-Main cavity; 12-Battery mounting slot; 121-Interface; 122-Snap-fit ​​slot; 123-Guide structure; 13-Fan vent; 14-Display housing; 15-Front mounting housing; 16-Rear mounting housing; 17-Airflow inlet; 10-Main body;

[0060] 2-Battery module; 21-Front end cover; 211-Heat dissipation vent; 212-Unlocking component; 213-Elastic slot; 22-Battery main housing; 221-Upper surface of battery main housing; 222-Lower surface of battery main housing; 223-Rear end face of battery main housing; 23-Guide groove; 24-Snap-fit ​​structure; 25-Discharge terminal; 26-Snap-fit ​​strip; 261-Protrusion; 27-Guide groove; 28-Charging port; 291-First step; 292-Second step; 293-Step surface;

[0061] 3-Cooling fan; 4-Cooling channel; 51-Magnetic target; 52-Power amplifier module; 521-Cooling fins; 522-Fan recess; 53-Antenna module; 531-Three-dimensional antenna; 532-Signal processing circuit board; 7-Base; 8-Display screen; 81-Handle; 9-Electromagnetic isolation plate. Detailed Implementation

[0062] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0063] The terms "first," "second," etc., used in this article do not specifically refer to order or sequence, nor are they intended to limit this case; they are merely used to distinguish components or operations described using the same technical terms.

[0064] The terms "connection" or "positioning" as used in this article can refer to two or more components or devices making direct physical contact with each other, or making indirect physical contact with each other, or to two or more components or devices operating or moving with each other.

[0065] The terms “include,” “including,” and “have” used in this article are all open-ended, meaning they include but are not limited to.

[0066] The terms “front,” “back,” “up,” “down,” “left,” and “right” used in this article are directional terms. In this case, they are only used to describe the positional relationship between the structures and are not intended to limit the specific direction of the protection scheme or its actual implementation.

[0067] See Figure 1 , Figure 9 This embodiment provides a wireless geomagnetic guide, including a housing 1, a battery module 2, a cooling fan 3, a geomagnetic guide component, an electromagnetic isolation plate 9, and a base 7. The housing 1 is composed of a display housing 14, a front mounting housing 15, and a rear mounting housing 16. The base 7 is pluggably connected to the bottom of the housing 1, and a display screen 8 and handles 81 on both sides are provided on the top. The structure of the main body 10 is adapted to the convenient operation requirements of on-site construction.

[0068] See Figure 1 , Figure 6The housing 1 has a cavity 11 inside. In order to solve the problem of unbalanced weight distribution and unstable placement of existing equipment, in this embodiment, the battery module 2, the power amplifier module 52, and the magnetic target 51 are arranged in the middle of the cavity 11 in the front-to-back direction. The battery module 2 and the magnetic target 51 are respectively set on opposite sides of the power amplifier module 52, so that the core weight components of the whole machine are evenly distributed and the center of gravity is centered, effectively avoiding shaking or tipping caused by weight imbalance.

[0069] See Figure 6 , Figure 7 The magnetic target 51 is fixedly installed vertically inside the cavity 11. This arrangement makes the ultra-low frequency magnetic field signal generated by the magnetic target 51 more uniformly radiated, which is convenient for the underground probe to receive stably. At the same time, no additional hoisting tools are needed to achieve precise positioning of a single magnetic target 51. The power amplifier module 52 is located in the middle of the cavity 11 and at the same height as the battery module 2. This facilitates connection with the magnetic target 51 and further optimizes the overall center of gravity distribution.

[0070] See Figure 4 , Figure 5 and Figure 7 To address the problem of insufficient heat dissipation in existing equipment, this embodiment sets up a dedicated heat dissipation structure. A fan vent 13 is provided on the housing 1, and the fan vent 13 connects the cavity 11 and the battery mounting slot 12. The cooling fan 3 is fixedly installed at the fan vent 13, and the air outlet direction is towards the battery module 2.

[0071] A heat dissipation channel 4 is provided between the battery module 2 and the inner wall of the battery mounting slot 12. The airflow blown out by the cooling fan 3 is discharged from the battery mounting slot 12 through the heat dissipation channel 4, forming a complete active heat dissipation airflow path. The power amplifier module 52 includes heat dissipation fins 521, and a fan groove 522 is opened in the heat dissipation fins 521. The cooling fan 3 is embedded in the fan groove 522, so that the cooling fan 3 and the heat dissipation fins 521 are closely fitted, which greatly improves the heat dissipation effect of the power amplifier module 52.

[0072] See Figure 9 The housing 1 is also provided with an airflow inlet 17, which is connected to the cavity 11 and is used to introduce external cooling air into the cavity 11 to form a complete heat dissipation cycle. The airflow inlet 17 is located below the display housing 14, which not only ensures smooth air intake but also prevents rainwater from falling directly into the housing, thus providing a certain degree of waterproof protection.

[0073] See Figure 8 , Figure 10 The upper surface 221 and lower surface 222 of the main battery housing 22 of the battery module 2 are provided with guide grooves 23. The guide grooves 23 extend along the direction from the fan port 13 to the front cover plate 21. They can guide the heat dissipation airflow in a directional manner, reduce wind resistance, and also act as reinforcing ribs to enhance the structural strength and rigidity of the main battery housing 22.

[0074] See Figure 7 , Figure 14 The battery module 2 is detachably plugged into the battery mounting slot 12 on the surface of the housing 1, which facilitates disassembly, charging and replacement. The battery module 2 includes a front cover plate 21 and a battery main housing 22. The front cover plate 21 is adapted to the shape of the slot of the battery mounting slot 12. After installation, the slot can be sealed to reduce the entry of dust and moisture and improve the protection performance.

[0075] See Figure 4 , Figure 5 To facilitate the formation of the heat dissipation channel 4, the outer contour dimension of the battery main housing 22 is smaller than that of the front cover plate 21. The heat dissipation channel 4 is formed between the upper surface 221, the lower surface 222, and the rear end face 223 of the battery main housing and the inner wall of the battery mounting groove 12. The front cover plate 21 is provided with heat dissipation airflow holes 211, which are located on the upper and lower parts of the front cover plate 21 that extend beyond the battery main housing 22, thereby maximizing the flow area of ​​the heat dissipation channel 4.

[0076] See Figure 10 , Figure 11 The side of the battery main casing 22 has a stepped structure, including a first step 291, a second step 292, and a stepped surface 293. Two symmetrical discharge terminals 25 are provided on the stepped surface 293, forming a dual-terminal redundant power supply structure to avoid power interruption caused by poor contact of a single terminal. The symmetrical arrangement also ensures that the force on both sides is even, facilitating insertion. The discharge terminals 25 are inserted and mated with the interface 121 on the inner wall of the battery mounting groove 12 to achieve a reliable electrical connection.

[0077] like Figure 10 , Figure 11 As shown, the first stepped section 291 on both sides of the main battery housing 22 is provided with a snap-fit ​​structure 24. The snap-fit ​​structure 24 includes a snap-fit ​​strip 26, and the outer side of the snap-fit ​​strip 26 is provided with a protrusion 261. When the battery module 2 is inserted into the battery mounting slot 12, the protrusion 261 engages and abuts against the snap-fit ​​groove 122 on the inner wall of the battery mounting slot 12 to achieve axial locking and prevent the battery module 2 from loosening.

[0078] See Figure 10 , Figure 12 The inner surfaces of both sides of the front cover 21 are provided with unlocking parts 212, and elastic slots 213 are opened on both sides of the front cover 21 corresponding to the unlocking parts 212. When the corresponding positions on both sides of the front cover 21 are pressed, the unlocking parts 212 push the end of the buckle strip 26, so that the protrusion 261 is disengaged from the buckle groove 122, and the battery module 2 can be quickly pulled out without tools, with high disassembly and assembly efficiency.

[0079] See Figures 12-16The second stepped section 292 on both sides of the main battery housing 22 is provided with guide grooves 27. The guide grooves 27 extend along the insertion direction and slide in cooperation with the guide structure 123 on the inner wall of the battery mounting groove 12 to ensure smooth insertion and removal. The guide grooves 27 on both sides adopt an asymmetrical structure design to form a foolproof fit and avoid damage to the components by inserting the battery in reverse. The main battery housing 22 is also provided with a charging port 28, which can be directly charged and is more flexible in use.

[0080] See Figure 17 and Figure 18 To address the issues of severe electromagnetic interference and insufficient positioning accuracy in existing equipment, an electromagnetic isolation plate 9 is horizontally fixed inside the cavity 11. The electromagnetic isolation plate 9 divides the cavity 11 into a lower electromagnetic isolation cavity 111 and an upper main cavity 112, thereby achieving physical isolation between the interference source and the sensitive components.

[0081] The antenna module 53 in the geomagnetic guidance assembly is independently disposed within the electromagnetic isolation cavity 111, while the magnetic target 51 and power amplifier module 52 are centrally arranged within the main cavity 112. The electromagnetic isolation plate 9 provides physical isolation, reducing low-frequency alternating magnetic field interference and improving positioning and detection accuracy. In this embodiment, the electromagnetic isolation plate 9 is made of titanium, providing excellent electromagnetic isolation. The antenna module 53 includes a three-dimensional antenna 531 and a signal processing circuit board 532. The three-dimensional antenna 531 is electrically connected to the signal processing circuit board 532, transmitting the received signal to the signal processing circuit board 532. The three-dimensional antenna 531 is fixedly disposed at the bottom of the electromagnetic isolation cavity 111 to improve signal reception sensitivity. Furthermore, the distance between the electromagnetic isolation plate 9 and the three-dimensional antenna 531 can be maintained at no less than 10cm, for example, 15cm, to further reduce interference.

[0082] When this guide is working, the battery module 2 supplies power to the whole machine through the discharge terminal 25, the power amplifier module 52 drives the magnetic target 51 to generate a low-frequency AC artificial magnetic field, the signal emitted by the underground probe is received by the three-dimensional antenna 531, processed by the signal processing circuit board 532 and then transmitted to the display screen 8 for display; during the operation, the cooling fan 3 works continuously to exhaust the heat generated by the power amplifier module 52 and the heat generated by the battery module 2 itself through the heat dissipation channel 4 and the heat dissipation airflow hole 211; external cold air enters the main cavity 112 through the airflow inlet 17 to form a continuous heat dissipation cycle, ensuring that the equipment works stably at a suitable temperature.

[0083] This embodiment of the application, by providing a fan vent on the housing connecting the cavity and the battery mounting slot, and configuring a cooling fan facing the battery module, can simultaneously provide active cooling for both the geomagnetic guiding component and the pluggable battery module within the housing cavity, achieving synchronous cooling of the cavity and the battery, and significantly improving the overall heat dissipation efficiency. Furthermore, this structure fully utilizes the natural gap between the battery module and the battery mounting slot to form a heat dissipation channel, eliminating the need for additional separate heat dissipation channels on the housing, simplifying the structure and saving internal space. Simultaneously, since the heat dissipation channel is located within the battery mounting slot, it does not compromise the sealing and waterproof structure of the housing cavity, maintaining good waterproof performance of the guiding instrument's main body cavity while achieving efficient heat dissipation.

[0084] Building upon this, the embodiments of this application utilize a detachable assembly of the battery module and the wireless geomagnetic guidance device, enabling rapid plug-and-play replacement of the battery module. This significantly improves the battery swapping efficiency during on-site operation of the guidance device and solves the problems of cumbersome and difficult-to-carry traditional fixed battery connections. Furthermore, the adaptive design of the front cover plate and the battery mounting slot effectively prevents dust, rainwater, and other impurities from entering the battery mounting slot, balancing convenient plug-and-play functionality with waterproofing. This ensures that the battery module can still provide stable power supply in complex construction site environments, improving the overall reliability and lifespan of the equipment.

[0085] Furthermore, in this embodiment, the internal cavity of the housing is divided into an upper and lower electromagnetic isolation cavity and a main cavity by an electromagnetic isolation plate. The easily interfered receiving antenna module is independently set in the lower electromagnetic isolation cavity, while the main electromagnetic interference sources such as the magnetic target and power amplifier module are concentrated in the upper main cavity. By utilizing the physical isolation and spatial layering of the electromagnetic isolation plate, the electromagnetic radiation propagation path between the interference source and the receiving antenna module is structurally cut off, which greatly reduces the interference of the low-frequency alternating magnetic field generated by the magnetic target and power amplifier during operation on the receiving antenna, ensuring the purity of the geomagnetic signal reception, and thus improving the positioning and detection accuracy and working stability of the wireless geomagnetic guide.

[0086] In summary, the embodiments of this application, through the rational design of the internal component layout, spatial distribution, and heat dissipation path of the guide, achieve good heat dissipation and electromagnetic isolation effects while ensuring the stability of the center of gravity.

[0087] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A wireless geomagnetic guidance instrument, characterized in that, include: The housing has an internal cavity, an electromagnetic isolation plate is provided in the cavity, the electromagnetic isolation plate divides the cavity into a lower electromagnetic isolation cavity and an upper main cavity, and a battery mounting groove is formed on the surface of the housing. The battery module is detachably installed in the battery mounting slot; The power amplifier module is located within the main cavity and at the same height as the battery module; A magnetic target is vertically disposed within the main cavity and is disposed on opposite sides of the power amplifier module, along with the battery module. A cooling fan is positioned between the battery module and the power amplifier module, with the airflow directed towards the battery module. The receiving antenna module is disposed within the electromagnetic isolation cavity; A heat dissipation channel is provided between the battery module and the inner wall of the battery mounting slot, and the airflow blown out by the cooling fan is discharged from the battery mounting slot through the heat dissipation channel.

2. The wireless geomagnetic guidance instrument according to claim 1, characterized in that: A fan opening is provided on the housing, the fan opening connects the cavity and the battery mounting slot, and the cooling fan is fixedly installed at the fan opening.

3. The wireless geomagnetic guidance instrument according to claim 2, characterized in that: The power amplifier module includes heat sink fins, on which fan grooves are formed. The fan grooves face the fan opening, and the cooling fan is embedded in the fan grooves.

4. The wireless geomagnetic guidance instrument according to claim 2, characterized in that: The battery module includes a front cover and a main battery housing. The upper and lower surfaces of the main battery housing are provided with guide grooves. The guide grooves extend along the direction from the fan vent to the front cover. The front cover is provided with heat dissipation airflow holes, which are located at the upper and lower parts of the front cover that extend beyond the main battery housing.

5. The wireless geomagnetic guidance instrument according to claim 2, characterized in that: The housing is provided with an airflow inlet, which communicates with the cavity inside the housing.

6. The wireless geomagnetic guidance instrument according to claim 4, characterized in that: The two sides of the main battery casing are formed with a stepped structure. The stepped structure includes a connected first step segment, a step surface, and a second step segment. A discharge terminal is provided on the step surface for insertion and mating with the interface on the battery mounting slot.

7. The wireless geomagnetic guidance instrument according to claim 6, characterized in that: Two discharge terminals are provided on the stepped surface of the main battery casing, and the two discharge terminals are symmetrically arranged on both sides of the main battery casing.

8. The wireless geomagnetic guidance instrument according to claim 6, characterized in that: The first stepped section on both sides of the main battery casing is provided with a snap-fit ​​structure. When the battery module is inserted into the battery mounting slot, the snap-fit ​​structure engages with the snap-fit ​​groove on the inner wall of the battery mounting slot. Unlocking parts are provided on the inner surfaces of both sides of the front cover, and the unlocking parts correspond to the end positions of the snap-fit ​​structure.

9. The wireless geomagnetic guidance instrument according to claim 8, characterized in that: Guide grooves are provided on the second stepped sections on both sides of the main battery casing, and the guide grooves extend along the insertion direction.

10. The wireless geomagnetic guidance instrument according to claim 1, characterized in that: The receiving antenna module includes a three-dimensional antenna and a signal processing circuit board. The three-dimensional antenna is electrically connected to the signal processing circuit board. The three-dimensional antenna is disposed at the bottom of the electromagnetic isolation cavity, and the signal processing circuit board is disposed above the three-dimensional antenna.

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