LoRa gas integrated sensor

Abstract

The embodiment of the present disclosure provides a LoRa gas comprehensive sensor, comprising: a sensor shell for providing support and protection; a gas chamber fixedly connected to the inside of the sensor shell; an air inlet channel connected to the inlet end of the gas chamber; an air outlet channel connected to the outlet end of the gas chamber; a gas detection element fixing frame installed in the gas chamber for fixing the gas detection element; a LoRa communication module mounting bracket fixed to the outside of the sensor shell for supporting the LoRa communication module; wherein the gas chamber comprises: an inlet diffusion zone provided between the air inlet channel and the gas chamber, having a gradually expanding conical structure; a plurality of groups of guide plates in spiral distribution, and the spiral plane is perpendicular to the airflow path; an outlet converging section provided at the outlet end of the gas chamber, adjacent to the air outlet channel. Through the scheme of the embodiment of the present disclosure, the influence of airflow turbulence on detection accuracy can be reduced.

Description

Technical Field

[0001] This application relates to the field of sensor technology, specifically to a LoRa gas integrated sensor. Background Technology

[0002] With the rapid development of Internet of Things (IoT) technology, intelligent sensing, real-time monitoring, and the interconnection of everything have become the core driving force for promoting the digital transformation of society. In fields such as environmental monitoring, industrial safety, smart homes, and smart agriculture, gas parameter monitoring (such as formaldehyde, PM2.5, CO2, VOCs, and harmful gases) is a key link in ensuring public health, production safety, and the rational use of resources.

[0003] A LoRa gas sensor is a device that integrates LoRa wireless communication technology to monitor the concentration of various gases in real time and transmit data remotely. However, in practical applications, airflow turbulence may cause uneven gas flow, thereby reducing the sensor's detection accuracy. Summary of the Invention

[0004] In view of this, embodiments of the present disclosure provide a LoRa gas integrated sensor, which at least partially solves the problems existing in the prior art.

[0005] This application discloses a LoRa gas sensor, comprising: Sensor housing, used to provide support and protection; The air chamber is fixedly connected inside the sensor housing; An air intake passage is connected to the inlet end of the air chamber; An air outlet channel is connected to the outlet end of the air chamber; A gas detection element holder, installed in the gas chamber, is used to fix the gas detection element. The LoRa communication module mounting bracket is fixed to the outside of the sensor housing to support the LoRa communication module; among which, The air chamber includes: The inlet diffusion zone, located between the air intake channel and the air chamber, has a gradually expanding conical structure; Multiple sets of guide vanes are arranged in a spiral pattern, with the spiral plane perpendicular to the airflow path; An outlet convergence section is located at the outlet end of the air chamber, adjacent to the air outlet channel. The inner wall of the outlet convergence section is a smooth, tapering curved surface, and its length is 1-2 times the diameter of the air chamber.

[0006] In one specific embodiment, the inlet diffusion zone includes a perforated plate, which is fixedly installed between the air intake channel and the air chamber body.

[0007] In one specific embodiment, the multiple sets of guide vanes are airfoil cross-section structures with smooth surfaces and gradually changing radii of curvature along the airflow direction, used to enhance the straight flow of airflow.

[0008] In one specific embodiment, the surfaces of the multiple sets of guide vanes are coated with a low-friction coating made of polytetrafluoroethylene material.

[0009] In one specific embodiment, the air intake channel includes a curved guide section connected to the front end of the inlet diffuser zone, and the curved guide section has a bending radius of 2-3 times the diameter of the straight section, which is used to pre-adjust the airflow direction.

[0010] In one specific embodiment, an airflow stabilizer is installed at the end of the air outlet channel. The airflow stabilizer consists of multiple sets of parallel baffles and is located adjacent to the outlet convergence section for uniformly discharging gas.

[0011] In one specific embodiment, the gas detection element holder is installed at the central axis of the gas chamber and avoids the downstream area of ​​the guide plate to minimize airflow interference.

[0012] In one specific embodiment, the LoRa communication module mounting bracket is fixed to the outside of the sensor housing by shock-absorbing pads and is located on the side wall away from the air inlet channel and the air outlet channel to prevent vibration from being transmitted to the air chamber.

[0013] In one specific embodiment, the sensor housing is provided with airflow guiding ribs, which are distributed along the air intake direction to guide the gas smoothly into the air chamber and reduce inlet turbulence.

[0014] This disclosure provides a LoRa gas integrated sensor, comprising: a sensor housing for providing support and protection; a gas chamber fixedly connected inside the sensor housing; an inlet channel connected to the inlet end of the gas chamber; an outlet channel connected to the outlet end of the gas chamber; a gas detection element mounting bracket installed inside the gas chamber for fixing the gas detection element; and a LoRa communication module mounting bracket fixed outside the sensor housing for supporting the LoRa communication module. The gas chamber includes: an inlet diffusion region disposed between the inlet channel and the gas chamber, having a gradually expanding conical structure; multiple sets of guide vanes spirally distributed, with the spiral plane perpendicular to the airflow path; and an outlet convergence section disposed at the outlet end of the gas chamber, adjacent to the outlet channel, the inner wall of the outlet convergence section being a smooth, gradually tapering curved surface, with a length 1-2 times the diameter of the gas chamber. The solution of this disclosure addresses how to reduce the impact of airflow turbulence on detection accuracy. Attached Figure Description

[0015] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the various drawings denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments disclosed in this application and should not be construed as limiting the scope of this application.

[0016] Figure 1 This is a schematic diagram of the structure of a LoRa gas integrated sensor described in this utility model; Figure 2 This is a schematic diagram of the internal structure of the sensor housing in the LoRa gas integrated sensor described in this utility model; Figure 3 This is an exploded schematic diagram of the internal structure of the inlet diffusion zone in the LoRa gas integrated sensor described in this utility model; Figure 4 This is a schematic diagram of the internal structure of the outlet convergence section in a LoRa gas integrated sensor described in this utility model.

[0017] In the diagram: 1. Sensor housing; 2. Gas chamber; 21. Inlet diffuser zone; 22. Guide vane; 23. Outlet convergence section; 3. Inlet channel; 4. Outlet channel; 5. Gas detection element mounting bracket; 6. LoRa communication module mounting bracket; 7. Perforated plate; 8. Low-friction coating; 9. Curved guide section; 10. Airflow stabilizer; 11. Vibration damping pad; 12. Airflow guide rib. Detailed Implementation

[0018] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings.

[0019] The following specific examples illustrate the implementation of this disclosure. Those skilled in the art can easily understand other advantages and effects of this disclosure from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. This disclosure can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this disclosure. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0020] like Figure 1 and Figure 2 As shown, the LoRa gas sensor of this application includes a sensor housing 1, a gas chamber 2, an air inlet channel 3, an air outlet channel 4, a gas detection element mounting bracket 5, and a LoRa communication module mounting bracket 6.

[0021] The sensor housing 1 provides mechanical support and protection for the entire sensor. Its mounting position is at the outermost layer of the device, enclosing the internal components to isolate them from the external environment. This housing is typically constructed of high-strength materials such as aluminum alloy or engineering plastics, and is detachably connected via bolts or clips for easy maintenance and installation. Technically, the housing is manufactured using, for example, injection molding, and coated with an anti-corrosion coating to ensure it does not deform or corrode during long-term use in harsh environments.

[0022] The gas chamber 2 is fixedly connected inside the sensor housing 1 and is used to contain and guide the gas sample. Its installation position is centered within the housing cavity to optimize the airflow path. The gas chamber 2 consists of an inlet diffuser zone 21, multiple guide vanes 22, and an outlet convergence section 23, forming an integrated structure (see details). Figure 3 and Figure 4 The inlet diffuser zone 21 is located at the inlet end of the air chamber 2 and directly connects to the intake channel 3. It adopts a gradually expanding design to reduce airflow velocity and disperse turbulence. Multiple guide vanes 22 are evenly arranged along the length of the air chamber 2, perpendicular to the airflow direction, to guide the gas to flow in a straight line. The outlet convergent section 23 is adjacent to the outlet end and adopts a gradually narrowing shape to smoothly accelerate the airflow. In practice, for example, transparent polycarbonate material is used to mold the main body of the air chamber 2, and the guide vanes 22 are welded or bonded to the inner wall to ensure airflow uniformity.

[0023] The air inlet channel 3 is connected to the inlet end of the gas chamber 2 to introduce external gas. Its installation position extends from the outside of the sensor housing 1 to the inlet diffusion area 21 of the gas chamber 2, forming a sealed path. This channel is typically a tubular structure with a smooth interior to reduce frictional resistance and is fixed to the inlet of the gas chamber 2 via a threaded or flanged connection. Technically, this is achieved, for example, by using a silicone hose or metal pipe with an integrated filter to block impurities and ensure the purity of the gas sample.

[0024] The exhaust channel 4 is connected to the outlet end of the air chamber 2 and is used to discharge gas. Its installation position extends from the outlet converging section 23 of the air chamber 2 to the outside of the housing, achieving gas discharge. This channel structure is similar to the intake channel 3, but in the opposite direction, and is sealed to the outlet of the air chamber 2 by snap-fit ​​or welding. Technically, this can be achieved, for example, by using PVC material and adding a one-way valve at the outlet to prevent backflow and improve system reliability.

[0025] A gas detection element holder 5 is installed inside the gas chamber 2 to secure the gas detection element. Its installation position is located in the central area of ​​the gas chamber 2, avoiding direct impact from the airflow. This holder is typically a bracket-type structure, consisting of multiple slots or clamps, and is fixed to the inner wall of the gas chamber 2 by screws or adhesives to ensure the stability of the detection element. Technically, for example, a stainless steel frame design with integrated spring clamping mechanisms can be used to facilitate the replacement and calibration of elements such as electrochemical sensors.

[0026] The LoRa communication module mounting bracket 6 is fixed to the outside of the sensor housing 1 to support the LoRa communication module. Its mounting position is located on the top or side of the housing for easy signal transmission. This bracket is typically L-shaped or platform-type, connected to the housing by bolts or welding, and provides heat dissipation holes and shockproof design. Technically, it can be implemented, for example, using stamped aluminum alloy sheet with integrated guide rail interfaces, allowing communication modules such as LoRaWAN modules to be quickly plugged in and out, adapting to different deployment environments.

[0027] This application effectively solves the technical problem of reducing the impact of airflow turbulence on detection accuracy through optimized airflow dynamics design. Specifically, the inlet diffuser zone 21 of the gas chamber 2 reduces gas velocity and disperses turbulence through a gradually expanding shape, reducing the interference of airflow impact on the detection element; multiple guide plates 22 are evenly spirally distributed along the gas chamber 2, guiding the gas to flow in a straight line and eliminating eddies, ensuring uniform contact between the gas sample and the detection element; the outlet convergence section 23 has a gradually narrowing design that smoothly accelerates the airflow and suppresses turbulence formation, avoiding backflow at the outlet that affects the measurement. These structures work together to create a laminar flow state for the gas within the gas chamber 2, minimizing concentration unevenness or pressure fluctuations caused by turbulence, thereby improving the accuracy of gas detection.

[0028] like Figure 3 As shown, in one embodiment, the inlet diffuser zone 21 includes a perforated plate 7, which is fixedly installed between the air intake channel 3 and the main body of the air chamber 2. Specifically, this installation position is located at the junction of the outlet end of the air intake channel 3 and the inlet end of the main body of the air chamber 2, ensuring that the airflow flows directly into the interior of the main body of the air chamber 2 after entering from the air intake channel 3 through the perforated plate 7. This arrangement aims to achieve uniform airflow distribution before the airflow enters the main body of the air chamber 2 through the physical structure of the perforated plate 7.

[0029] Specifically, the porous plate 7 consists of multiple micropores evenly distributed across the plate body, with optimized pore size to reduce airflow resistance. The plate body is made of corrosion-resistant material and is fixed to the interface between the main body of the gas chamber 2 and the air inlet channel 3 using fasteners or welding, thus forming a stable physical barrier. This structure allows for multiple flow splits as the airflow passes through the micropores, effectively reducing turbulence intensity and preventing the formation of eddies or localized high-pressure zones within the gas sample in the gas chamber 2.

[0030] For example, the perforated plate 7 can be directly embedded in the connecting flange between the main body of the air chamber 2 and the air intake channel 3, and fixed with bolts to achieve a reliable connection. This design simplifies the assembly process while maintaining the continuity of the airflow path.

[0031] For example, the perforated plate 7 is fixed to the transition area between the end of the air intake channel 3 and the main inlet of the air chamber 2 by a threaded connection. Specifically, the edge of the perforated plate 7 is provided with a flange structure, which matches the groove on the inner wall of the main body of the air chamber 2, and a sealing ring is used to ensure airtightness, thereby achieving uniform dispersion and reducing turbulence when the airflow passes through.

[0032] like Figure 3 As shown, in one embodiment, the inlet diffusion zone 21 is located between the intake channel 3 and the main body of the air chamber 2, adjacent to the inlet end of the air chamber 2. Its structure is designed as a gradually expanding cone, gradually widening from the outlet of the intake channel 3 towards the main body of the air chamber 2, forming a smooth transition region. This gradually expanding cone structure controls the airflow diffusion process through the cone angle, which is set within the range of 30 to 60 degrees, ensuring a gradual decrease in airflow velocity while guiding the gas to be evenly distributed into the main body of the air chamber 2. This geometric configuration directly connects the intake channel 3 and the main body of the air chamber 2, forming a continuous airflow path, thereby dispersing the gas streamlines at the inlet and avoiding turbulence caused by sudden changes in cross-section.

[0033] Specifically, the gradually expanding conical structure comprises a conical wall with a circular or polygonal cross-section, linearly expanding from a narrow inlet to a wide outlet, with an angle range optimized for laminar airflow. The inlet diffuser 21 is fixed inside the inlet end of the air chamber 2, seamlessly connecting with the intake channel 3 to ensure a gapless connection and reduce energy loss. This structure is achieved through integral molding or assembly of materials, such as rigid polymers or metals, with connections made by welding or snap-fit ​​fixing to maintain structural stability and airflow continuity.

[0034] For example, the inlet diffuser zone 21 can be manufactured using injection molding. Specifically, a gradually expanding conical cavity is formed using polycarbonate material, with the diffusion angle precisely designed to be 45 degrees. The angle can be adjusted within the range of 30-60 degrees by adjusting the mold parameters. This conical structure is directly bonded and fixed to the outlet end of the air intake channel 3, and simultaneously fitted into the inner wall of the air chamber 2 body to ensure a leak-free connection.

[0035] like Figure 3 As shown, in one embodiment, the deflector 22 is located inside the air chamber 2, uniformly distributed along the length of the air chamber 2, and arranged perpendicular to the airflow path. The deflector 22 adopts an airfoil cross-section structure, similar to an aircraft wing design, with its cross-sectional shape including a leading edge, a trailing edge, and a convex arcuate portion. The airfoil structure is optimized through aerodynamic principles to ensure smooth airflow in a predetermined direction.

[0036] Specifically, the surface of the guide vane 22 is machined to be smooth, without burrs or protrusions, to reduce frictional resistance. The radius of curvature gradually changes along the airflow direction, that is, it shows a continuous increasing or decreasing trend from the leading edge to the trailing edge. This gradual design adapts to changes in gas velocity, avoids airflow separation, and thus maintains the linear characteristics of the flow.

[0037] For example, the deflector 22 can be manufactured using injection molding with engineering plastics such as polycarbonate. The mold is designed with a radius of curvature that increases linearly from the inlet side to the outlet side to achieve a gradient structure. The deflector 22 is fixed to the wall of the air chamber 2 by snap-fit ​​or adhesive bonding to ensure stable support.

[0038] like Figure 3 As shown, in one embodiment, the air chamber 2 is provided with multiple sets of guide vanes 22, which are uniformly arranged along the length of the air chamber 2 and installed perpendicular to the airflow path. Each guide vane 22 is covered with a low-friction coating 8, which is directly attached to the exposed surface of the guide vane 22, specifically on the side facing the airflow, to optimize the airflow contact interface. The coating consists of polytetrafluoroethylene material, forming a uniform thin film that covers the entire outer surface area of ​​the guide vane 22, thereby reducing frictional resistance during gas flow. Furthermore, the application location and connection method of the coating ensure a strong bond with the substrate of the guide vane 22, preventing it from detaching under airflow scouring.

[0039] For example, a low-friction coating 8 is applied to the surface of the deflector 22 by a spraying process. Specifically, after cleaning and surface pretreatment, the deflector 22 is uniformly sprayed with a polytetrafluoroethylene dispersion and then cured in a high-temperature oven to form a dense thin film coating with a thickness ranging from 5 to 20 micrometers, ensuring that the coating is firmly adhered to the substrate of the deflector 22 and covers the entire airflow contact area.

[0040] like Figure 1 As shown, in one embodiment, the outlet convergence section 23 is located at the outlet end of the gas chamber 2, adjacent to the gas outlet channel 4, and is used to achieve smooth acceleration of the airflow during the gas sample discharge process and effectively suppress turbulence formation. Its installation position ensures direct connection with the main body of the gas chamber 2, forming a continuous airflow channel, thereby maintaining a smooth transition of gas from the detection area to the external environment. Structurally, the inner wall of this section is designed as a smooth, tapering curved surface. Through a smooth and gradually inwardly contracting geometry, it provides a uniform streamlined path, avoiding airflow separation or vortex generation.

[0041] Specifically, the length of the outlet convergence section 23 is set to be 1 to 2 times the diameter of the gas chamber 2. This range is based on fluid dynamics optimization, ensuring sufficient acceleration distance to prevent sudden changes in flow velocity while maintaining overall structural compactness. The length-to-diameter ratio is determined through calculation or simulation to accommodate stable flow requirements at different gas velocities. In terms of connection, the outlet convergence section 23 is fixedly integrated into the outlet end of the gas chamber 2 and seamlessly connected to the outlet channel 4, ensuring that the airflow is directly introduced into the outlet channel 4 from inside the gas chamber 2, reducing energy loss at the interface.

[0042] For example, the outlet convergence section 23 can be achieved through injection molding or machining technology, such as using aluminum alloy or stainless steel, and its inner wall can be machined into a smooth parabolic tapered surface. Specifically, the length is set to 1.5 times the diameter of the air chamber 2, and the inner surface is ensured to be smooth and flawless through precision milling, so as to promote uniform acceleration of airflow and eliminate the risk of turbulence.

[0043] like Figure 3 As shown, in one embodiment, the intake channel 3 is structurally designed to include a curved guide section 9, which is located at the front end of the intake channel 3 and directly connected to the front end of the inlet diffuser zone 21 of the air chamber 2. This arrangement allows the curved guide section 9 to serve as the initial part of the gas inflow path, responsible for preliminary adjustment of the airflow before it enters the inlet diffuser zone 21. The curved guide section 9 is characterized by its bending radius being limited to 2 to 3 times the diameter of the intake channel 3. This radius range ensures that the airflow can smoothly change direction when passing through the curved section, avoiding flow separation caused by sharp bends. In terms of connection, the curved guide section 9 and the inlet diffuser zone 21 form a continuous transition, together constituting a gas guiding system from the outside to the main body of the air chamber 2, thereby achieving pre-adjustment in the airflow direction.

[0044] Specifically, the bending radius of the curved guide section 9 is set to be 2 to 3 times the channel diameter. This dimensional design is based on fluid dynamics principles and aims to optimize the laminar flow characteristics of the airflow. Through this curved section, the airflow direction is pre-adjusted to match the diffusion angle of the inlet diffuser zone 21, reducing the initial turbulence intensity. At the same time, the installation position of the curved guide section 9 is close to the inlet diffuser zone 21, ensuring that the airflow has achieved directional consistency before entering the diffuser zone, avoiding direct impact on the internal components of the air chamber 2.

[0045] For example, the curved guide section 9 can be achieved by a section of arc-shaped pipe, such as bending the front end of the intake channel 3 into a semi-circular or U-shaped structure, with the bending radius precisely controlled to be 2.5 times the diameter of the intake channel 3; specifically, the curved guide section 9 is directly welded or flanged to the inlet end of the inlet diffuser zone 21 to form a seamless transition, so as to pre-adjust the direction in the gas flow and suppress the introduction of turbulence.

[0046] like Figure 4As shown, in one embodiment, an airflow stabilizer 10 is installed at the end of the outlet channel 4 in the LoRa gas integrated sensor. This stabilizer is located adjacent to the outlet convergence section 23 and aims to ensure uniform gas discharge and effectively suppress turbulent diffusion. Specifically, the airflow stabilizer 10, through its positioning, optimizes the gas flow before it exits the gas chamber 2, avoiding airflow turbulence and thus improving overall flow stability. This installation position is closely adjacent to the outlet convergence section 23, forming a continuous airflow control path to ensure that the gas is adequately processed before entering the external environment.

[0047] Specifically, the airflow stabilizer 10 consists of multiple parallel baffles arranged parallel to each other to form a series of uniform channels. Each baffle extends along the airflow direction and employs a thin-plate design. The spacing between the baffles is consistent to promote laminar flow. This structure allows the gas to be uniformly divided during discharge, reducing local turbulence and maintaining the straightness of the airflow. The baffles are rigidly connected to the inner wall of the outlet channel 4 to ensure the stability of the entire assembly during operation.

[0048] For example, multiple parallel stainless steel baffles are welded to the inner end of the exhaust channel 4, with the baffles parallel to the airflow direction and positioned near the outlet convergence section 23. The spacing between the baffles is precisely calculated and set to a range of 0.5 mm to 2 mm to achieve optimal airflow separation and turbulence suppression. Specifically, the baffles extend to the outlet of the exhaust channel 4 to ensure uniform gas discharge.

[0049] like Figure 1 and Figure 2 As shown, in one embodiment, the gas detection element holder 5 of the LoRa gas integrated sensor of this application is precisely positioned at the central axis of the gas chamber 2 to optimize the airflow environment and enhance the stability of gas detection. Specifically, the holder is made of a rigid material, such as metal or polymer, and is directly fixed to the inner wall of the gas chamber 2 by fasteners or snap-fit ​​structures, ensuring that it remains centered on the central axis. This installation method avoids any overlap with the downstream area of ​​the guide vane 22, where the downstream area is defined as the area extending along the airflow direction behind the guide vane 22, thereby preventing turbulence or eddies from directly affecting the gas detection element supported by the holder. Through this arrangement, the structural design of the holder ensures that the gas sample can contact the detection element with minimal disturbance when flowing through the gas chamber 2, while simplifying the overall assembly process.

[0050] For example, the fixture is configured as a cylindrical or frame structure, its dimensions matching the internal space of the air chamber 2 to provide stable support without obstructing the airflow path. The fixture is fixed to the wall of the air chamber 2 via threaded connections or welding, ensuring its position on the central axis remains constant, and the mounting point avoids the area where the guide plate 22 is located, thereby maintaining the linear flow characteristics of the airflow. This design emphasizes positional accuracy and structural simplification to eliminate potential sources of interference.

[0051] like Figure 2 As shown, in one embodiment, the LoRa communication module mounting bracket 6 is fixed to the outside of the sensor housing 1 by a shock-absorbing pad 11. The shock-absorbing pad 11, as a vibration damping element, is integrated into the fixing interface of the bracket to provide buffer isolation. Specifically, the shock-absorbing pad 11 is sandwiched between the mounting bracket and the housing, and a rigid connection is achieved by fasteners, thereby absorbing external mechanical vibrations and preventing them from being directly transmitted to internal components.

[0052] Specifically, the mounting bracket is positioned on a side wall away from the inlet channel 3 and the outlet channel 4. More specifically, it is located in the side region of the sensor housing 1, which is not adjacent to the surfaces where the gas inlet and outlet are located. For example, the sensor housing 1 has multiple side walls, and the mounting bracket is selectively fixed to those sides that are not directly related to the gas flow path to prevent vibration from coupling to the air chamber 2 through the housing structure. This arrangement combines location optimization and vibration damping structures to minimize the impact of vibration on the airflow stability within the air chamber 2.

[0053] For example, the LoRa communication module mounting bracket 6 is fixed to the side wall of the sensor housing 1 by a shock-absorbing pad 11, which is opposite to the surface where the air intake channel 3 and the air outlet channel 4 are located. For example, the shock-absorbing pad 11 is made of elastic rubber material, installed at the base hole of the bracket, and fastened to the surface of the housing by bolts, so as to achieve a stable connection while effectively absorbing external impact.

[0054] like Figure 2 As shown, in one embodiment, the LoRa gas integrated sensor of this application has an airflow guiding rib 12 added inside the sensor housing 1. This airflow guiding rib 12 is distributed along the air intake direction and is installed on the inner wall of the sensor housing 1, adjacent to the inlet end of the gas chamber 2. Specifically, the airflow guiding rib 12 includes multiple parallel rib structures. These ribs extend from the inner wall of the housing and are arranged towards the air intake channel 3, forming a continuous guiding surface to guide the gas smoothly into the main body of the gas chamber 2 and reduce inlet turbulence. The airflow guiding rib 12 typically adopts a thin-walled design, with uniform rib spacing and gradually varying lengths along the airflow direction to optimize the gas flow path and prevent vortex generation. Its connection method is either integrally formed with the inner surface of the sensor housing 1 or fixed by fasteners to ensure stability and durability.

[0055] For example, the airflow guide rib 12 is directly integrated into the internal cavity of the sensor housing 1 through injection molding. The rib adopts an arc-shaped curved surface design and is arranged parallel to the air intake direction, for example, extending from the inlet of the air intake channel 3 to the inlet area of ​​the air chamber 2, so as to gradually guide the gas to form laminar flow, while reducing airflow impact and turbulence intensity.

[0056] In actual operation, when this device is in use, external gas flows into the gas chamber 2 through the air intake channel 3, where the airflow speed is reduced and turbulence is dispersed in the inlet diffusion zone 21. Subsequently, the gas flows in a straight line under the guidance of multiple guide plates 22, reducing eddy formation. At the same time, the gas detection element fixed on the gas detection element holder 5 analyzes the gas sample. Then, the gas is smoothly accelerated and discharged through the outlet convergence section 23. The detection data is wirelessly transmitted to the external system via the LoRa communication module supported by the LoRa communication module mounting bracket 6.

[0057] The specific embodiments described above further illustrate the purpose, technical solutions, and beneficial effects of the embodiments of this disclosure. It should be understood that the above descriptions are merely specific embodiments of the embodiments of this disclosure and are not intended to limit the scope of protection of the embodiments of this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of this disclosure should be included within the scope of protection of the embodiments of this disclosure.

Claims

1. A LoRa gas integrated sensor, characterized in that, include: Sensor housing (1) is used to provide support and protection; The air chamber (2) is fixedly connected to the inside of the sensor housing (1); An air intake channel (3) is connected to the inlet end of the air chamber (2); An air outlet channel (4) is connected to the outlet end of the air chamber (2); A gas detection element holder (5) is installed inside the gas chamber (2) to fix the gas detection element; The LoRa communication module mounting bracket (6) is fixed to the outside of the sensor housing (1) to support the LoRa communication module; wherein, The air chamber (2) includes: The inlet diffusion zone (21) is located between the air intake channel (3) and the air chamber (2) and has a gradually expanding conical structure; Multiple sets of guide vanes (22) are spirally distributed, and the spiral plane is perpendicular to the airflow path; An outlet convergence section (23) is located at the outlet end of the air chamber (2) and adjacent to the air outlet channel (4). The inner wall of the outlet convergence section (23) is a smooth tapered curved surface and its length is 1-2 times the diameter of the air chamber (2).

2. The LoRa gas integrated sensor of claim 1, wherein: The inlet diffusion zone (21) includes a perforated plate (7), which is fixedly installed between the air intake channel (3) and the main body of the air chamber (2).

3. The LoRa gas integrated sensor of claim 1, wherein: The multiple sets of guide vanes (22) are airfoil cross-section structures with smooth surfaces and gradually changing radii of curvature along the airflow direction, which are used to enhance the straight flow of airflow.

4. The LoRa gas integrated sensor of claim 1, wherein: The surfaces of the multiple sets of guide vanes (22) are coated with a low-friction coating (8), which is made of polytetrafluoroethylene material.

5. The LoRa gas integrated sensor of claim 1, wherein: The air intake channel (3) includes a curved guide section (9), which is connected to the front end of the inlet diffuser zone (21) and has a bending radius of 2-3 times the diameter of the straight section, for pre-adjusting the airflow direction.

6. The LoRa gas sensor according to claim 1, characterized in that: An airflow stabilizer (10) is installed at the end of the air outlet channel (4). The airflow stabilizer (10) consists of multiple sets of parallel baffles and is located near the outlet convergence section (23) for uniformly discharging gas.

7. The LoRa gas integrated sensor of claim 1, wherein: The gas detection element holder (5) is installed at the central axis of the gas chamber (2) and avoids the downstream area of ​​the guide plate (22) to minimize airflow interference.

8. The LoRa gas integrated sensor of claim 1, wherein: The LoRa communication module mounting bracket (6) is fixed to the outside of the sensor housing (1) by a shock-absorbing pad (11) and is located on the side wall away from the air inlet channel (3) and the air outlet channel (4) to prevent vibration from being transmitted to the air chamber (2).

9. The LoRa gas integrated sensor of claim 1, wherein: The sensor housing (1) is provided with airflow guide ribs (12) inside. The airflow guide ribs (12) are distributed along the air intake direction to guide the gas smoothly into the air chamber (2) and reduce inlet turbulence.

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