A high-precision multi-channel optical sensor capable of detecting multiple gases

Abstract

The utility model discloses a kind of high-precision multi-channel optical sensors of multiple gases can be detected, the sensor is realized efficient, accurate gas detection by reasonable layout internal structure, top is provided with heat dissipation groove, side door has suction port, right side has exhaust port, optimization heat dissipation and gas circulation, internal gas detection component, PCB board, laser module work in coordination, can high-precision multi-channel detect multiple gases, support is provided with positioning cavity and fan cavity, accurately position each component, upper shell, lower shell and support are connected by buckle, bayonet joint and plug-in slot, nesting board nesting, structure is stable, its suction port, gas detection component, air inlet, laser module are sequentially connected, realize gas orderly detection, fan and exhaust port connection auxiliary heat dissipation, overall design improves detection precision and stability, meet the detection demand of multiple gases under complex environment, with good application prospect.

Description

Technical Field

[0001] This invention belongs to the field of gas detection technology, specifically relating to a high-precision, multi-channel optical sensor capable of detecting multiple gases. Background Technology

[0002] Optical sensors for gas detection are devices that detect gases based on optical principles. They typically utilize the optical properties of gas molecules, such as absorption, scattering, reflection, or fluorescence of light at specific wavelengths, to convert changes in optical signals into measurable electrical signals. This enables the identification of target gas types, concentration detection, and quantitative analysis. These sensors are characterized by fast response, high selectivity, resistance to electromagnetic interference, and non-contact measurement capabilities, and are widely used in environmental monitoring, industrial safety, and medical diagnostics.

[0003] However, traditional sensors are not well-designed in terms of structure. The layout of functions such as air intake and exhaust is not scientific, and poor gas flow leads to reduced detection efficiency. At the same time, the heat dissipation channel design of the sensor is unreasonable, which causes the temperature to rise significantly after the device has been running for a long time, affecting the performance of internal components. Utility Model Content

[0004] The purpose of this invention is to provide a high-precision, multi-channel optical sensor capable of detecting various gases, in order to solve the problems mentioned in the background art, such as the unreasonable structural design of traditional sensors, the unscientific layout of functions such as air intake and exhaust, poor gas flow leading to reduced detection efficiency, and the unreasonable design of the heat dissipation channel of the sensor, which causes the temperature to rise significantly after the device has been running for a long time, affecting the performance of internal components.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-precision multi-channel optical sensor capable of detecting multiple gases, comprising a sensor body; A heat dissipation groove is provided at the top of the sensor body, an air intake is provided at the side door of the sensor body, and an exhaust vent is provided at the right side of the heat dissipation groove. A gas detection component is located inside the sensor body. A PCB board is located behind the gas detection component. A laser module is located on the right side of the PCB board. A fan is located above the laser module. An air inlet is located in the middle of the PCB board.

[0006] Preferably, an upper shell is provided at the top of the sensor body, a support frame is provided at the middle of the sensor body, and a lower shell is provided at the bottom of the sensor body.

[0007] Preferably, a positioning cavity is provided on the left side of the support frame, and a fan cavity is provided on the right side of the positioning cavity. The positioning cavity corresponds to the gas detection component, and the fan cavity corresponds to the fan.

[0008] Preferably, a fixing hole is provided inside the PCB board, and a bolt hole is provided inside the fan. The PCB board and the fan are respectively installed and fixed to the support frame through the fixing hole and the bolt hole.

[0009] Preferably, the air intake is connected to the gas detection component, the gas detection component is connected to the air inlet, the air inlet is connected to the laser module, and the fan is connected to the exhaust port.

[0010] Preferably, the upper shell is provided with a buckle array below, the lower shell is provided with a buckle array above, and the support frame is provided with a slot array on the outer side. The upper shell and the lower shell are connected to the support frame by the buckle and the slot.

[0011] Preferably, the upper and lower shells are provided with insertion slots on their inner sides, and the support frame is provided with nesting plates on its upper and lower sides respectively. The support frame is nested with the upper and lower shells through the insertion slots and nesting plates.

[0012] Preferably, a sensor mounting hole is provided at the middle position of the support frame, and the sensor body is mounted and fixed through the sensor mounting hole.

[0013] Compared with existing technologies, this invention provides a high-precision, multi-channel optical sensor capable of detecting multiple gases, which has the following advantages: 1. Through the arrangement of the gas detection component, PCB board, laser module, fan, air inlet, upper shell, support frame, lower shell, positioning cavity, fan cavity, fixing holes, bolt holes, and exhaust port, the gas detection component, PCB board, laser module, and fan inside the sensor body are compactly arranged. The gas detection component is close to the PCB board for convenient signal transmission and processing; the laser module is located on the right side of the PCB board and connected to the air inlet, enabling timely optical detection of the incoming gas; the fan is placed above the laser module, which does not interfere with the operation of other components and effectively dissipates heat, making efficient use of the space in the entire sensor structure. The positioning cavity and fan cavity inside the support frame correspond to the gas detection component and the fan, respectively, providing precise heat dissipation for each component. The installation position ensures the accuracy and stability of the relative positions between the components, which is beneficial to improving detection accuracy and equipment reliability. The PCB board is fixed to the support frame through fixing holes, and the fan is fixed to the support frame through bolt holes. This connection method makes the connection between the components stable. Under long-term use or under certain vibration, it is not easy for the components to loosen or shift, ensuring the stability of the sensor operation. The air intake, gas detection component, air inlet and laser module are connected in sequence to form a smooth gas flow path, which is conducive to the rapid entry of gas into the detection area for detection. The fan is connected to the exhaust port, which can promptly discharge the gas after detection and the heat generated by the operation of the equipment, ensuring continuous air renewal and good heat dissipation environment inside the sensor.

[0014] 2. Through the design of snap-fit, bayonet, plug-in slot, and nesting plate, the snap-fit ​​connection between the snap-fit ​​and bayonet slots allows the upper and lower shells to be easily installed by simply aligning them with the bayonet slots on the outside of the support frame and snapping the snap-fit ​​in. This simple and quick operation greatly shortens installation time and improves production efficiency. The snap-fit ​​connection provides a certain mechanical strength, ensuring a tight connection between the upper and lower shells and the support frame, making them difficult to separate. Simultaneously, the nesting connection of the plug-in slot and nesting plate further enhances the stability of the connection. Both work together to position and fix the components from different directions, effectively preventing the upper and lower shells from shaking or shifting during sensor use, ensuring the overall stability. The robust structure of this sensor, combined with this connection method, makes disassembly relatively simple when internal repairs, component replacements, or cleaning are required. Simply separate the clips from the slots and pull the nesting plate out of the insertion groove to easily remove the upper and lower shells. This facilitates operation of internal components, reduces maintenance costs and difficulty, and through the snap-fit ​​and nesting connection, the upper and lower shells are tightly integrated with the support frame as a whole, reducing gaps between components and improving the overall sealing of the sensor. This prevents external dust, moisture, and other impurities from entering the sensor and damaging internal precision components, thereby extending the sensor's service life. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the upper shell structure in this utility model.

[0017] Figure 3 This is a schematic diagram of the gas detection component in this utility model.

[0018] Figure 4 This is a schematic diagram of the support frame in this utility model.

[0019] Figure 5 This is a schematic diagram of the PCB board structure in this utility model.

[0020] Figure 6 This is a schematic diagram of the fan structure in this utility model.

[0021] Figure 7 This is a schematic diagram of the laser module in this utility model.

[0022] Figure 8 This is a schematic diagram of the lower shell structure of this utility model.

[0023] Figure 9 This is a schematic diagram of the cross-sectional structure of the sensor in this utility model.

[0024] Figure 10 This is a schematic diagram of the sensor side door in this utility model.

[0025] In the diagram: 1. Sensor body; 2. Upper shell; 3. Gas detection component; 4. Support frame; 5. PCB board; 6. Fan; 7. Laser module; 8. Lower shell; 9. Heat dissipation slot; 10. Exhaust vent; 11. Sensor mounting hole; 12. Buckle; 13. Insertion slot; 14. Positioning cavity; 15. Fan cavity; 16. Fixing hole; 17. Bolt hole; 18. Air inlet; 19. Air intake port; 20. Nesting plate; 21. Bayonet. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] This utility model provides, for example Figure 1-10 The high-precision multi-channel optical sensor capable of detecting multiple gases shown includes a sensor body 1; A heat dissipation groove 9 is provided at the top of the sensor body 1, an air intake 19 is provided at the side door of the sensor body 1, and an exhaust vent 10 is provided on the right side of the heat dissipation groove 9. A gas detection component 3 is located inside the sensor body 1. A PCB board 5 is located behind the gas detection component 3. A laser module 7 is located on the right side of the PCB board 5. A fan 6 is located above the laser module 7. An air inlet 18 is located in the middle of the PCB board 5.

[0028] An upper shell 2 is provided at the top of the sensor body 1, a support frame 4 is provided at the middle of the sensor body 1, and a lower shell 8 is provided at the bottom of the sensor body 1.

[0029] A positioning cavity 14 is provided on the left side of the support frame 4, and a fan cavity 15 is provided on the right side of the positioning cavity 14. The positioning cavity 14 corresponds to the gas detection component 3, and the fan cavity 15 corresponds to the fan 6.

[0030] The PCB board 5 has a fixing hole 16 inside, and the fan 6 has a bolt hole 17 inside. The PCB board 5 and the fan 6 are installed and fixed to the support frame 4 through the fixing hole 16 and the bolt hole 17 respectively.

[0031] The air intake 19 is connected to the gas detection component 3, the gas detection component 3 is connected to the air inlet 18, the air inlet 18 is connected to the laser module 7, and the fan 6 is connected to the exhaust vent 10.

[0032] The upper shell 2 is provided with a series of buckles 12 below, and the lower shell 8 is also provided with a series of buckles 12 above. The support frame 4 is provided with a series of slots 21 on the outside. The upper shell 2 and the lower shell 8 are connected to the support frame 4 by buckles 12 and slots 21.

[0033] Insertion slots 13 are provided on the inner sides of the upper shell 2 and the lower shell 8, and nesting plates 20 are provided on the upper and lower sides of the support frame 4. The support frame 4 is nested with the upper shell 2 and the lower shell 8 through the insertion slots 13 and the nesting plates 20.

[0034] A sensor mounting hole 11 is provided in the middle of the support frame 4, and the sensor body 1 is installed and fixed through the sensor mounting hole 11.

[0035] In this embodiment, the specific implementation steps of a high-precision multi-channel optical sensor capable of detecting multiple gases are as follows: The upper shell 2 and lower shell 8 are respectively connected to the slots 21 arranged on the outer side of the support frame 4 via buckles 12 arrayed below and above them. Simultaneously, the nesting plates 20 on the upper and lower sides of the support frame 4 are inserted into the insertion slots 13 arranged on the inner sides of the upper shell 2 and lower shell 8 to complete the nesting connection, thereby securely assembling the external structure of the sensor. The PCB board 5 is then connected to the support frame 4 via its internal fixing holes 16 using appropriate fasteners such as screws. The support frame 4 is installed and fixed. The fan 6 is installed and fixed to the support frame 4 using bolts and other connectors through the bolt holes 17 inside the fan 6. The fan 6 is installed in the corresponding position above the laser module 7. The gas detection component 3 is placed in the positioning cavity 14 on the left side inside the support frame 4 for precise positioning and installation. The entire sensor body 1 is installed in the predetermined usage position through the sensor mounting hole 11 in the middle of the support frame 4. Outside air enters the sensor through the air intake 19 located at the side door of the sensor body 1. The air intake 19 is connected to the gas detection component 3. The inhaled air first reaches the gas detection component 3, which performs preliminary processing and analysis. The gas is then transmitted through the air inlet 18 to the center of the PCB board 5. The air inlet 18 is connected to the laser module 7, which emits a laser to optically detect the passing gas. Based on the absorption and scattering characteristics of different gases, the type and concentration of the gas are analyzed. During sensor operation, the fan 6 starts running. The fan 6 is connected to the exhaust vent 10, which expels the heat generated inside the sensor and accelerates the flow of internal gas. A heat sink 9 at the top of the sensor body 1 assists in heat dissipation, further ensuring the sensor operates in a suitable temperature environment. After a period of use, maintenance is required depending on the actual situation. Maintenance may include cleaning the air inlet 19, checking for loose connections such as the PCB board 5, and checking the connection between the fan 6 and the support frame 4, to ensure the sensor continues to operate stably. If internal components need to be replaced or repaired, the installation process can be reversed: first, disassemble the upper shell 2 and lower shell 8, then operate on the internal components.

[0036] like Figure 1-10As shown, a gas detection component 3 is located inside the sensor body 1. A PCB board 5 is located behind the gas detection component 3. A laser module 7 is located on the right side of the PCB board 5. A fan 6 is located above the laser module 7. An air inlet 18 is located in the middle of the PCB board 5. An upper shell 2 is located above the sensor body 1. A support frame 4 is located in the middle of the sensor body 1. A lower shell 8 is located at the bottom of the sensor body 1. A positioning cavity 14 is located on the left side inside the support frame 4. A fan cavity 15 is provided on the right side of the positioning cavity 14. The positioning cavity 14 corresponds to the gas detection component 3, and the fan cavity 15 corresponds to the fan 6. A fixing hole 16 is provided inside the PCB board 5, and a bolt hole 17 is provided inside the fan 6. The PCB board 5 and the fan 6 are respectively installed and fixed to the support frame 4 through the fixing hole 16 and the bolt hole 17. The air intake 19 is connected to the gas detection component 3, the gas detection component 3 is connected to the air inlet 18, the air inlet 18 is connected to the laser module 7, and the fan 6 is connected to the exhaust vent 10.

[0037] Preferably, the gas detection component 3, PCB board 5, laser module 7, and fan 6 inside the sensor body 1 are compactly arranged. The gas detection component 3 is adjacent to the PCB board 5 for convenient signal transmission and processing. The laser module 7 is located on the right side of the PCB board 5 and connected to the air inlet 18, enabling timely optical detection of the incoming gas. The fan 6 is positioned above the laser module 7, which does not interfere with the operation of other components and effectively dissipates heat, making efficient use of the space in the entire sensor structure. The positioning cavity 14 and fan cavity 15 inside the support frame 4 correspond to the gas detection component 3 and the fan 6, respectively, providing precise installation positions for each component and ensuring the accuracy and stability of the relative positions between the components. This design improves detection accuracy and equipment reliability. The PCB board 5 is fixed to the support frame 4 via the fixing holes 16 and the fan 6 via the bolt holes 17. This connection method ensures a stable connection between the components, preventing loosening or displacement of components during long-term use or under certain vibrations, thus ensuring the stability of the sensor operation. The intake port 19, gas detection component 3, air inlet 18, and laser module 7 are connected in sequence, forming a smooth gas flow path, which facilitates the rapid entry of gas into the detection area for detection. The fan 6 is connected to the exhaust port 10, which can promptly discharge the gas after detection and the heat generated by the equipment operation, ensuring continuous air renewal and a good heat dissipation environment inside the sensor.

[0038] like Figure 1 , 2 4, 6 and Figure 8As shown, buckles 12 are arranged in an array below the upper shell 2, and buckles 12 are also arranged in an array above the lower shell 8. The outer side of the support frame 4 is arranged with slots 21. The upper shell 2 and the lower shell 8 are connected to the support frame 4 by buckles 12 and slots 21. Insertion slots 13 are provided on the inner side of the upper shell 2 and the lower shell 8. Nesting plates 20 are provided on the upper and lower sides of the support frame 4. The support frame 4 is nested with the upper shell 2 and the lower shell 8 by insertion slots 13 and nesting plates 20.

[0039] Preferably, the snap-fit ​​connection between the buckle 12 and the bayonet 21 allows the upper shell 2 and lower shell 8 to be easily installed by simply aligning the buckle 12 with the bayonet 21 on the outside of the support frame 4. This simple and quick operation significantly reduces installation time and improves production efficiency. The snap-fit ​​connection provides a certain mechanical strength, ensuring a tight connection between the upper shell 2, lower shell 8, and support frame 4, preventing separation. Simultaneously, the nested connection between the insertion slot 13 and the nesting plate 20 further enhances the stability of the connection. These two elements work together to position and fix the components from different directions, effectively preventing the upper shell 2 and lower shell 8 from shaking or shifting during sensor use, ensuring the stability of the entire sensor structure. The robust structure and this connection method make disassembly relatively simple when the sensor needs internal repair, component replacement, or cleaning. Simply separate the buckle 12 from the bayonet 21 and pull the nesting plate 20 out of the insertion slot 13 to easily remove the upper shell 2 and lower shell 8, facilitating operation of internal components and reducing maintenance costs and difficulty. Through snap-fit ​​and nesting connections, the upper shell 2, lower shell 8, and support frame 4 are tightly integrated into a whole, reducing gaps between components and improving the overall sealing of the sensor. This prevents external dust, moisture, and other impurities from entering the sensor and damaging internal precision components, thereby extending the sensor's service life.

[0040] like Figure 1-10 As shown, a sensor mounting hole 11 is provided in the middle of the support frame 4, and the sensor body 1 is installed and fixed through the sensor mounting hole 11.

[0041] Optionally, the standardized sensor mounting hole 11 design makes the installation process simpler. During installation, staff can quickly and accurately install the sensor body 1. In the later maintenance or replacement of the sensor body 1, it is also easy to disassemble and perform disassembly operations, reducing the difficulty of installation and maintenance and improving work efficiency.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-precision multi-channel optical sensor capable of detecting multiple gases, comprising a sensor body (1); A heat dissipation groove (9) is provided at the top of the sensor body (1), an air intake (19) is provided at the side door of the sensor body (1), and an exhaust vent (10) is provided at the right side of the heat dissipation groove (9). Its features are: A gas detection component (3) is provided inside the sensor body (1). A PCB board (5) is provided on the rear side of the gas detection component (3). A laser module (7) is provided on the right side of the PCB board (5). A fan (6) is provided above the laser module (7). An air inlet (18) is provided in the middle of the PCB board (5).

2. The high-precision multi-channel optical sensor capable of detecting multiple gases according to claim 1, characterized in that: An upper shell (2) is provided at the top of the sensor body (1), a support frame (4) is provided at the middle of the sensor body (1), and a lower shell (8) is provided at the bottom of the sensor body (1).

3. The high-precision multi-channel optical sensor capable of detecting multiple gases according to claim 2, characterized in that: The support frame (4) has a positioning cavity (14) located on the left side and a fan cavity (15) located on the right side. The positioning cavity (14) corresponds to the gas detection component (3) and the fan cavity (15) corresponds to the fan (6).

4. The high-precision multi-channel optical sensor capable of detecting multiple gases according to claim 3, characterized in that: The PCB board (5) has a fixing hole (16) inside, and the fan (6) has a bolt hole (17) inside. The PCB board (5) and the fan (6) are respectively fixed to the support frame (4) through the fixing hole (16) and the bolt hole (17).

5. A high-precision multi-channel optical sensor capable of detecting multiple gases according to claim 4, characterized in that: The air intake (19) is connected to the gas detection component (3), the gas detection component (3) is connected to the air inlet (18), the air inlet (18) is connected to the laser module (7), and the fan (6) is connected to the exhaust port (10).

6. A high-precision multi-channel optical sensor capable of detecting multiple gases according to claim 5, characterized in that: The upper shell (2) is provided with a buckle (12) array below, and the lower shell (8) is also provided with a buckle (12) array above. The support frame (4) is provided with a slot (21) array on the outside. The upper shell (2) and the lower shell (8) are connected to the support frame (4) by buckles (12) and slots (21).

7. A high-precision multi-channel optical sensor capable of detecting multiple gases according to claim 6, characterized in that: Insertion slots (13) are provided on the inner sides of the upper shell (2) and the lower shell (8), and nesting plates (20) are provided on the upper and lower sides of the support frame (4). The support frame (4) is nested with the upper shell (2) and the lower shell (8) through the insertion slots (13) and the nesting plates (20).

8. A high-precision multi-channel optical sensor capable of detecting multiple gases according to claim 7, characterized in that: The support frame (4) has a sensor mounting hole (11) in the middle position, and the sensor body (1) is installed and fixed through the sensor mounting hole (11).

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