Carbon dioxide sensor for environmental monitoring

Abstract

A disclosed carbon dioxide sensor for environmental monitoring comprises a sensor body, the bottom of the sensor body is provided with a gas-sensitive probe and a protective cover, the gas-sensitive probe is located in the protective cover, two sides in the protective cover are provided with dustproof nets close to the bottom, one side of the sensor body is fixedly provided with a water tank, and the water tank is fixedly provided with a water outlet. A compressible air bag and a pressing plate located at one end of the compressible air bag are arranged in the water tank, and one side of the pressing plate is fixedly connected with a sliding shaft penetrating through one end of the water tank. According to the device, the water tank, the compressible air bag, the floater mechanism, the vertical rotating shaft, the bent shaft, the sliding shaft, the connecting rod, the rotating disc, the wind-driven mechanism and the rainwater collecting funnel are arranged, rainwater is conveniently collected, meanwhile, the interior of the water tank can be pressurized through wind power and the compressible air bag, and the rainwater collected in the water tank can be sprayed through the flushing part to flush the dustproof net; therefore, the dustproof function of the gas-sensitive probe is met, and meanwhile, the precision of carbon dioxide gas monitoring is ensured.

Description

Technical Field

[0001] This invention relates to the field of environmental monitoring equipment technology, and in particular to a carbon dioxide sensor for environmental monitoring. Background Technology

[0002] A carbon dioxide sensor is a device used to monitor the carbon dioxide content in the air within a given area. Carbon dioxide sensors are used both indoors and outdoors. Indoors, they are commonly used in enclosed / semi-enclosed spaces to detect whether carbon dioxide levels exceed safe limits, and also in agricultural greenhouses to monitor crop absorption. Outdoors, carbon dioxide sensors are primarily used for atmospheric environmental monitoring, such as industrial emissions detection and forest emissions monitoring.

[0003] Currently, most indoor and outdoor carbon dioxide sensors use those with gas-sensitive probes. These sensors offer advantages such as high sensitivity and monitoring accuracy. Outdoor carbon dioxide sensors are typically installed at high locations to monitor carbon dioxide emissions over a wide area. However, outdoor weather is unpredictable; wind and airflow can cause dust to adhere to the gas-sensitive probe. As dust accumulates, it can completely cover the probe, significantly reducing the accuracy of carbon dioxide monitoring. Furthermore, the high-altitude installation of outdoor carbon dioxide sensors makes maintenance extremely inconvenient. Therefore, there is an urgent need for a carbon dioxide sensor that can prevent dust from covering the gas-sensitive probe without affecting the airflow passing through it.

[0004] Therefore, this invention proposes a carbon dioxide sensor for environmental monitoring. Summary of the Invention

[0005] The purpose of this invention is to solve the problem that dust covering the gas-sensitive probe of a carbon dioxide sensor affects the accuracy and sensitivity of monitoring, and to propose a carbon dioxide sensor for environmental monitoring.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A carbon dioxide sensor for environmental monitoring includes a sensor body. A gas-sensitive probe and a protective cover are disposed at the bottom of the sensor body. The gas-sensitive probe is located inside the protective cover. Dustproof nets are disposed on both sides of the protective cover near the bottom. A water tank is fixedly disposed on one side of the sensor body. A compressible air bladder and a pressure plate located at one end of the compressible air bladder are disposed inside the water tank. A sliding shaft passing through one end of the water tank is fixedly connected to one side of the pressure plate. A turntable is disposed on the top of the water tank. An eccentric shaft is disposed on the top of the turntable. The eccentric shaft is movably connected to one end of the sliding shaft via a connecting rod. A [missing information - likely a device or structure] is disposed on the top of the water tank. A vertical rotating shaft is located on one side of the turntable. The vertical rotating shaft has a bend located above the water tank and used in conjunction with a connecting rod. A float mechanism for controlling the rotation of the vertical rotating shaft is installed inside the water tank. A wind-driven mechanism that provides unidirectional rotational driving force to the turntable is installed above the outside of the water tank. A water outlet pipe and a water inlet pipe are installed at the bottom of the water tank. One end of the water outlet pipe is connected to a flushing part located inside a protective cover. One end of the water inlet pipe is fixedly connected to a rainwater collection funnel. The other end of the water inlet pipe is equipped with a push-button gate valve located inside the water tank. A trigger frame located inside the water tank and opposite to the push-button gate valve is fixedly connected to one side of the sliding shaft.

[0008] As a further description of the above technical solution:

[0009] One end of the sliding shaft is welded with a cantilever, the top of the cantilever is rotatably connected to one end of the connecting rod, and a connecting hole is opened on one side of the connecting rod near the other end and fitted outside the eccentric shaft. The bend is integrally set on the vertical rotating shaft and has a semi-circular structure.

[0010] As a further description of the above technical solution:

[0011] The compressible airbag includes a positioning plate, a corrugated airbag fixedly mounted on one side of the positioning plate, and a support spring located inside the corrugated airbag. A breathing tube penetrating the water tank is fixedly connected to the other side of the positioning plate. The inner cavity of the corrugated airbag is connected to the breathing tube, and its other end is opposite to the pressure plate.

[0012] As a further description of the above technical solution:

[0013] A lever is welded to the bottom of the vertical rotating shaft. The float mechanism includes an L-shaped rod, a transmission rod, and a float. A positioning shaft that is rotatably connected to one side of the L-shaped rod and the other side of the water tank is fixedly connected to one side of the L-shaped rod. One end of the short rod of the L-shaped rod is connected to one end of the transmission rod and the lever by a ball joint. The float is fixedly mounted on one end of the long rod of the L-shaped rod.

[0014] As a further description of the above technical solution:

[0015] The turntable includes an outer ring disc, a fixed disc fitted inside the outer ring disc, and a ratchet mechanism located between the outer ring disc and the fixed disc. The eccentric shaft is fixedly mounted on the top wall of the outer ring disc. The bottom of the fixed disc is fixedly connected to the top wall of the water tank through a limiting shaft. The wind drive mechanism includes a drive shaft, an impeller, an intermediate gear, and an air duct. An intermediate gear that meshes with the outer ring disc is fixedly mounted on the drive shaft. The impeller is fixedly mounted on the upper part of the drive shaft, and the air duct covers the impeller.

[0016] As a further description of the above technical solution:

[0017] The air intake hood includes a circular hood and an inclined plate located inside the circular hood. A vertical sleeve is installed through the inclined plate. A central shaft fitted inside the vertical sleeve is welded to the top of the circular hood. The central shaft and the vertical sleeve are rotatably connected. Three circumferentially distributed air intake cones are welded to the outer peripheral wall of the circular hood.

[0018] As a further description of the above technical solution:

[0019] The push-button gate valve includes a valve tube, a gate, and a spring. A valve cavity is formed inside the valve tube. The gate and the spring are both located inside the valve cavity. One end of the spring abuts against one end of the gate. A flow passage hole is formed on the gate. A push shaft with one end located outside the valve cavity is welded to one end of the gate. The push shaft is opposite to the trigger frame.

[0020] As a further description of the above technical solution:

[0021] The bottom of the protective cover is V-shaped, and dustproof nets are provided on both inclined surfaces of the protective cover. The rinsing section includes a water pipe and a spray pipe fixedly connected to the water pipe through a short pipe. The water pipe is installed through the bottom of the protective cover. There are two spray pipes located on both sides of the water pipe. A row of nozzles opposite to the dustproof nets is fixedly connected to the outer wall of the spray pipe. A baffle plate located below the gas-sensitive probe is fixedly connected to the top of the water pipe.

[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0023] 1. In this invention, by setting up a water tank, a compressible air bladder, a float mechanism, a vertical rotating shaft, a bent shaft, a sliding shaft, a connecting rod, a turntable, a wind-driven mechanism, a trigger frame, and a rainwater collection funnel, rainwater can be easily collected. At the same time, the wind power and the compressible air bladder can pressurize the water tank, so that the rainwater collected in the water tank can be sprayed through the flushing part to wash the dustproof net, ensuring that the air with low dust content can pass normally through the gas-sensitive probe. Thus, it can meet the dustproof function of the gas-sensitive probe while ensuring the accuracy and sensitivity of carbon dioxide gas monitoring.

[0024] 2. In this invention, the turntable includes an outer ring disc and a fixed disc. A ratchet mechanism is provided between the outer ring disc and the fixed disc. The ratchet mechanism enables the compressible airbag to reliably expand and compress significantly, allowing the water tank to reliably form a high positive pressure. This enables the rinsing section to spray water mist at a certain pressure, thereby improving the cleanliness of the dustproof net.

[0025] 3. In this invention, an air intake shroud is provided on the wind-driven mechanism. The air intake shroud includes a circular shroud and an inclined plate located inside the circular shroud. The inclined plate is rotatably configured. Three circumferentially evenly distributed air intake cones are provided on the outer periphery of the circular shroud. The air intake cones can guide airflow from all directions into the circular shroud. The inclined plate can guide the airflow inside the circular shroud to pass almost entirely through the impeller. This configuration can greatly improve the reliability of wind-driven impeller rotation and is more practical. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a carbon dioxide sensor for environmental monitoring proposed in this invention;

[0027] Figure 2 for Figure 1 A magnified diagram of the central "a";

[0028] Figure 3 for Figure 1 The main view;

[0029] Figure 4 This is a schematic diagram of the vertical rotating shaft and connecting rod connection of a carbon dioxide sensor for environmental monitoring proposed in this invention;

[0030] Figure 5 This is a schematic diagram of the structure of a compressible air bladder for a carbon dioxide sensor used for environmental monitoring, as proposed in this invention.

[0031] Figure 6 This is a schematic diagram of the vertical rotating shaft of a carbon dioxide sensor for environmental monitoring proposed in this invention.

[0032] Figure 7 for Figure 6 A magnified diagram of the central "b";

[0033] Figure 8 This is a schematic diagram of the trigger frame of a carbon dioxide sensor for environmental monitoring proposed in this invention;

[0034] Figure 9 This is a schematic diagram of the push-button gate valve for a carbon dioxide sensor used in environmental monitoring, as proposed in this invention.

[0035] Legend:

[0036] 1. Sensor body; 11. Gas-sensitive probe; 12. Protective cover; 13. Dustproof net; 2. Water tank; 3. Compressible airbag; 31. Positioning plate; 311. Breathing tube; 32. Corrugated airbag; 33. Support spring; 4. Pressure plate; 5. Sliding shaft; 51. Cantilever; 6. Turntable; 61. Outer ring plate; 62. Fixed plate; 621. Limiting shaft; 7. Eccentric shaft; 8. Connecting rod; 81. Connecting hole; 9. Vertical rotating shaft; 91. Bend; 92. L-shaped lever; 101. Float mechanism; 1011. L-shaped rod; 10111. Positioning shaft; 1012. Transmission rod; 1013. Float; 102. Air-driven mechanism; 1021. Drive shaft; 102 2. Impeller; 1023. Intermediate gear; 1024. Exhaust hood; 10241. Circular cover; 102411. Central shaft; 102412. Inlet cone; 10242. Inclined plate; 102421. Vertical sleeve; 103. Water outlet pipe; 104. Flushing section; 1041. Water pipe; 10411. Water baffle; 1042. Spray pipe; 10421. Spray head; 105. Rainwater collection funnel; 106. Press-type gate valve; 1061. Valve pipe; 10611. Valve chamber; 1062. Gate plate; 10621. Flow hole; 10622. Push shaft; 1063. Spring; 107. Trigger frame; 108. Inlet pipe. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Example 1

[0039] Please see Figure 1-9 A carbon dioxide sensor for environmental monitoring includes a sensor body 1. The sensor body 1 is connected to a monitoring client via an Internet of Things or wireless communication module. When in use, the sensor body 1 is fixedly installed on the top of a building or on a tower pile pre-embedded in the ground to monitor the carbon dioxide emissions in the area to be monitored, such as the area around or inside a chemical plant. The sensor body 1 is selected with a structure having a gas-sensitive probe 11. The sensor body 1 obtains the signal corresponding to the carbon dioxide emissions in the area through the gas-sensitive probe 11.

[0040] The bottom of the sensor body 1 is provided with a gas-sensitive probe 11 and a protective cover 12. The gas-sensitive probe 11 is located inside the protective cover 12. The protective cover 12 is used to protect against rain and prevent rainwater from corroding the gas-sensitive probe 11. Dustproof nets 13 are provided on both sides inside the protective cover 12 near the bottom. The function of the dustproof nets 13 is to block dust in the air from the outside, so that clean air can flow through the gas-sensitive probe 11 and prevent a large amount of dust in the air from adhering to the gas-sensitive probe 11.

[0041] A water tank 2 is fixedly mounted on one side of the sensor body 1. The water tank 2 is used to hold water. Inside the water tank 2, there is a compressible air bladder 3 and a pressure plate 4 located at one end of the compressible air bladder 3. A sliding shaft 5 is fixedly connected to one side of the pressure plate 4, passing through one end of the water tank 2. A sliding sleeve is welded to one end of the water tank 2 and fitted outside the sliding shaft 5. A sealing rubber sleeve is provided between the sliding sleeve and the sliding shaft 5. When the sliding shaft 5 slides into the water tank 2, it can drive the pressure plate 4 to compress the compressible air bladder 3. After being compressed, the compressible air bladder 3 will shrink in volume. After the compressible air bladder 3 expands, it will apply air pressure to the water tank 2. The bottom of the water tank 2 is equipped with a water outlet pipe 103. The water in the water tank 2 will be discharged outward through the water outlet pipe 103 under air pressure. One end of the water outlet pipe 103 is connected to a flushing part 104 located inside the protective cover 12. The water in the water outlet pipe 103 will be sprayed out through the flushing part 104 under pressure. The sprayed water will flush outward from the inside of the dustproof net 13, thereby washing away the dust and hard dirt attached to the dustproof net 13. It should be noted that the compressible airbag 3 in the compressed state will apply an elastic counter-force to the pressure plate 4.

[0042] The compressible airbag 3 includes a positioning plate 31, a corrugated airbag 32 fixedly mounted on one side of the positioning plate 31, and a support spring 33 located inside the corrugated airbag 32. A breathing tube 311 penetrating the water tank 2 is fixedly connected to the other side of the positioning plate 31. The breathing tube 311 and the water tank 2 are fixedly connected. The inner cavity of the corrugated airbag 32 is connected to the breathing tube 311, and its other end is opposite to the pressure plate 4. Specifically, one side of the corrugated airbag 32 is bonded to the positioning plate 31. A breathing port connected to the breathing tube 311 is opened on one side of the corrugated airbag 32. When the corrugated airbag 32 is compressed and its volume is reduced, the support spring 33 inside it will be compressed, and the air inside the corrugated airbag 32 will be discharged through the breathing tube 311. When the corrugated airbag 32 is extended, the outside air will enter through the breathing tube 311.

[0043] The bottom of the water tank 2 is provided with a water inlet pipe 108. One end of the water inlet pipe 108 is fixedly connected to a rainwater collection funnel 105. The rainwater collection funnel 105 is used to collect rainwater and introduce it into the water tank 2 to replenish the water in the water tank 2. When in use, a cone-shaped filter screen with the small end facing upward can be installed on the top of the rainwater collection funnel 105 to prevent debris from entering and to prevent debris from accumulating. To achieve automatic rainwater replenishment and closed discharge of water tank 2, a push-button gate valve 106 is installed at the other end of the inlet pipe 108 inside the water tank 2. When the push-button gate valve 106 is closed, the compressible air bladder 3 inside the water tank 2 expands and squeezes the water inside the tank 2. The squeezed water is then discharged through the outlet pipe 103. When the push-button gate valve 106 is open, rainwater enters the water tank 2 through the rainwater collection funnel 105, replenishing the water tank 2. Specifically, the top of the rainwater collection funnel 105 is higher than the height of the water tank 2, and the spray nozzle of the flushing section 104 is higher than the height of the middle of the water tank 2. When there is no pressure inside the water tank 2, the liquid level inside it is equal to the liquid level inside the flushing section 104. The push-button gate valve 106 is controlled by a trigger frame 107.

[0044] Specifically, the push-button gate valve 106 includes a valve tube 1061, a gate 1062, and a spring 1063. The lower end of the valve tube 1061 is fixedly connected to the top of the inlet pipe 108. A valve cavity 10611 is formed inside the valve tube 1061. The gate 1062 and the spring 1063 are both located inside the valve cavity 10611. One end of the spring 1063 abuts against one end of the gate 1062. A flow passage hole 10621 is formed on the gate 1062. A push shaft 10622, with one end located outside the valve cavity 10611, is welded to one end of the gate 1062. The push shaft 10622 is pressed... When pressed to the limit position, the flow passage 10621 and the flow channel in the valve pipe 1061 are connected. At this time, the spring 1063 is compressed, the push-button gate valve 106 opens, and the water inlet pipe 108 is connected to the inner cavity of the water tank 2. The push shaft 10622 and the trigger frame 107 are opposite each other. When the trigger frame 107 contacts the push shaft 10622 and continues to apply force, the push shaft 10622 will push the gate plate 1062 to move to the open state of the push-button gate valve 106. Conversely, the spring 1063 will push the gate plate 1062 to reset, and the push-button gate valve 106 will close. The trigger frame 107 has a bent rod structure. It should be noted that a sealing sleeve is nested inside the valve cavity 10611, and the gate plate 1062 is fitted on the outer wall of the sealing sleeve to prevent leakage.

[0045] A turntable 6 is installed on the top of the water tank 2. The turntable 6 is horizontally positioned, and an eccentric shaft 7 is installed on the top of the turntable 6. When the turntable 6 rotates, the eccentric shaft 7 will revolve. The eccentric shaft 7 is movably connected to one end of the sliding shaft 5 via a connecting rod 8. In a preferred embodiment, a cantilever 51 is welded to one end of the sliding shaft 5, and the top of the cantilever 51 is rotatably connected to one end of the connecting rod 8. A connecting hole 81 is opened on one side of the connecting rod 8 near the other end and fitted onto the outside of the eccentric shaft 7. When the eccentric shaft 7 revolves once, it can drive the sliding shaft 5 to make linear reciprocating motion through the connecting rod 8. When the sliding shaft 5 moves linearly, it can drive the pressure plate 4 to move synchronously. A vertical rotating shaft 9 is located on the top of the water tank 2, situated on one side of the turntable 6. Specifically, a sleeve is welded to the outer wall of the water tank 2, with a bearing and a sealing ring embedded inside. The vertical rotating shaft 9 is fitted over the bearing and sealing ring. A bend 91, located above the water tank 2 and cooperating with the connecting rod 8, is integrally formed on the vertical rotating shaft 9 and has a semi-circular structure. When the vertical rotating shaft 9 rotates, it drives the bend 91 to rotate synchronously. The bend 91 serves to allow and block the connecting rod 8. For example, when the inner side of the bend 91 is opposite to one side of the connecting rod 8, the connecting rod 8 will be blocked by the bend 91 and cannot continue to follow the eccentric shaft 7. When the bend 91 twists away, the connecting rod 8 can continue to follow the eccentric shaft 7. The driving force for the rotation of the vertical rotating shaft 9 is provided by the float mechanism 101. The turntable 6 is designed for unidirectional rotation, which is provided by the air-driven mechanism 102.

[0046] Specifically, a lever 92 is welded to the bottom of the vertical rotating shaft 9. The float mechanism 101 is installed inside the water tank 2. The float mechanism 101 includes an L-shaped rod 1011, a transmission rod 1012, and a float ball 1013. One side of the L-shaped rod 1011 is fixedly connected to a positioning shaft 10111 that is rotatably connected to one side inside the water tank 2. The L-shaped rod 1011 is configured to rotate up and down. One end of the short rod of the L-shaped rod 1011 is connected to one end of the lever 92 via a ball joint through the transmission rod 1012. When the L-shaped rod 1011 swings up and down, it drives the lever 92 to swing via the connecting rod 8. The lever 92 then drives the vertical shaft 9 to rotate. The float 1013 is fixedly mounted on one end of the long rod on the L-shaped rod 1011. When the water level in the water tank 2 is too low, the float 1013 will descend by its own weight and float on the water surface. At this time, the bend 91 is blocking the connecting rod 8. When the water level in the water tank 2 rises, the float 1013 will rise. At this time, the bend 91 will rotate and move aside the connecting rod 8. In general, the rotation of the vertical shaft 9 is controlled by the liquid level in the water tank 2.

[0047] The wind-driven mechanism 102 is positioned above the water tank 2. Preferably, the turntable 6 includes an outer ring disc 61, a fixed disc 62 fitted inside the outer ring disc 61, and a ratchet mechanism located between the outer ring disc 61 and the fixed disc 62. The bottom of the fixed disc 62 is fixedly connected to the top wall of the water tank 2 via a limiting shaft 621. The turntable 6 is similar to a flywheel structure, rotating in coordination with the outer ring disc 61 and the fixed disc 62. Under the action of the ratchet mechanism, the outer ring disc 61 can only rotate unidirectionally relative to the fixed disc 62. An eccentric shaft 7 is fixedly mounted on the top wall of the outer ring disc 61. The wind-driven mechanism 102 includes a drive... The system comprises a shaft 1021, an impeller 1022, an intermediate gear 1023, and an exhaust shroud 1024. A corner plate is welded to the top of the water tank 2. The drive shaft 1021 is rotatably connected to the corner plate. An intermediate gear 1023, meshing with an outer ring disk 61, is fixedly fitted onto the drive shaft 1021. A ring of teeth is fixedly arranged around the outer circumference of the outer ring disk 61. When the drive shaft 1021 rotates, it drives the outer ring disk 61 to rotate via the intermediate gear 1023. The impeller 1022 is fixedly fitted onto the upper part of the drive shaft 1021. Driven by wind, the impeller 1022 rotates, which in turn drives the drive shaft 1021 to rotate. The pitch circle diameter of the intermediate gear 1023 is smaller than the pitch circle diameter of the teeth on the outer ring disk 61. This arrangement allows the drive shaft 1021 to drive the outer ring disk 61 to rotate with a smaller rotational driving force. It should be noted that the ratchet mechanism described above allows the outer ring disc 61 to accelerate relative to the fixed disc 62 under the elastic thrust of the sliding shaft 5 (provided by the pressure plate 4 after the compressible airbag 3 expands) after the connecting rod 8 disengages from the bend 91. The air duct 1024 is mounted on the impeller 1022. The function of the air duct 1024 is to guide airflow from all directions into the interior and impact the impeller 1022 approximately axially, enabling the impeller 1022 to rotate in one direction.

[0048] Specifically, the draft hood 1024 includes a circular hood 10241 and an inclined plate 10242 located inside the circular hood 10241. A support frame is welded to the top of the outer side of the water tank 2. The lower end face of the circular hood 10241 and the upper end face of the support frame are welded together. The impeller 1022 is located above the support frame and inside the circular hood 10241. A reinforcing sleeve fitted outside the drive shaft 1021 is welded to the top of the support frame. A bearing is provided between the reinforcing sleeve and the drive shaft 1021. A central shaft 102411 fitted inside the vertical sleeve 102421 is welded to the top of the circular hood 10241. The central shaft 102411 and the circular hood 10241 are coaxial. The inclined plate 10242 is inclined relative to the vertical surface. A vertical sleeve 10242 is provided through the inclined plate 10242. 421. A vertical sleeve 102421 is located at the top of the inclined plate 10242. A central shaft 102411 is fitted inside the vertical sleeve 102421 and the two are rotatably connected. This arrangement allows the inclined plate 10242 to rotate within the dome 10241. Three circumferentially evenly distributed air inlet cones 102412 are welded to the outer peripheral wall of the dome 10241. The large ends of the air inlet cones 102412 face outward. The three air inlet cones 102412 can guide the airflow in the corresponding direction into the dome 10241. The inclined plate 10242 will adaptively rotate and block the other two air inlet cones 102412, causing the airflow entering the dome 10241 to flow downward and pass through the impeller 1022, allowing the impeller 1022 to rotate under various wind directions. One side of the support frame is fixedly connected to one side of the sensor body 1.

[0049] In this embodiment, the bottom of the protective cover 12 is V-shaped, and dustproof nets 13 are provided on both inclined surfaces of the protective cover 12. The rinsing section 104 includes a water pipe 1041 and a spray pipe 1042 fixedly connected to the water pipe 1041 through a short pipe. The water pipe 1041 passes through the bottom of the protective cover 12 and its bottom is fixedly connected to the water outlet end of the water outlet pipe 103. The water pipe 1041 is fixedly connected to the bottom of the protective cover 12. There are two spray pipes 1042 located on both sides of the water pipe 1041. The two spray pipes 1042 are respectively opposite to the inner side of the two dustproof nets 13. A row of nozzles 10421 opposite to the dustproof nets 13 is fixedly connected to the outer wall of the spray pipes 1042. The nozzles 10421 spray water mist and blow it outward from the inside of the dustproof nets 13, increasing the spraying area and improving the spraying effect, thereby ensuring the ventilation effect of the dustproof nets 13.

[0050] The top of the water pipe 1041 is fixedly connected to a baffle plate 10411 located below the gas sensor 11. The baffle plate 10411 has gaps at both ends and on both sides inside the protective cover 12. These gaps facilitate airflow through the gas sensor 11. The function of the baffle plate 10411 is to prevent the water mist sprayed from the nozzle 10421 from spreading to the gas sensor 11.

[0051] Working principle: In use, the sensor body 1 is installed on one side of a building or tower pile at a high position via a mounting plate. When air circulates, it passes through the dustproof net 13 and then enters the gas-sensitive probe 11 along the protective cover 12. The sensor body 1 can obtain the signal of carbon dioxide content in the air through the gas-sensitive probe 11, and then transmit the signal to the monitoring client via the Internet of Things or remote communication. In the initial state, the compressible airbag 3 is in an inflated state, the push-button gate valve 106 is in a closed state, and the water tank 2 contains no water or a small amount of water. At this time, the float 1013 is at a low height. Under the transmission of the L-shaped rod 1011 and the transmission rod 1012, the vertical rotating shaft 9 rotates and drives the bend 91 to the blocking position. When there is a wind force of level 4 or above (including level 4), the airflow will enter the dome 10241 through the corresponding air inlet cone 102412. At this time, the inclined plate 10242 will adaptively rotate to the lower inclined surface facing the wind. The airflow from the 242 guide flows downward and passes through the impeller 1022. The impeller 1022 rotates, and the drive shaft 1021 rotates, which in turn drives the outer ring disk 61 (clockwise) to rotate through the intermediate gear 1023. When the outer ring disk 61 rotates, the eccentric shaft 7 drives the sliding shaft 5 to slide into the water tank 2 through the connecting rod 8. At this time, the pressure plate 4 will move towards the corrugated airbag 32. The corrugated airbag 32 will be compressed after being squeezed, and the support spring 33 inside will be compressed. When the eccentric shaft 7 rotates to one side of the connecting rod 8... When entering the bend 91, it will be blocked, and the outer ring 61 cannot rotate (forward or reverse). It should be noted that the axes of the connecting rod 8 and the sliding shaft 5 corresponding to the position of the eccentric shaft 7 are not in the same vertical plane, and the eccentric shaft 7 is subjected to a pulling force to continue rotating clockwise. At the same time, the trigger frame 107 will squeeze the push shaft 10622 on the push gate valve 106 under the drive of the sliding shaft 5. At this time, the push gate valve 106 opens, and the rainwater collection funnel 105 is connected to the water tank 2. When it rains, rainwater enters through the rainwater collection funnel 105, then passes through the push-button gate valve 106 and enters the water tank 2. The water level in the tank rises, causing the float 1013 to rise. Driven by the L-shaped rod 1011 and connecting rod 8, the vertical shaft 9 rotates, and the bend 91 swings outward. At this time, the connecting rod 8 moves rapidly under the elastic thrust of the support spring 33 inside the corrugated air bladder 32. The sliding shaft 5 is pushed and slides outward, the trigger frame 107 disengages from the push shaft 10622, the push-button gate valve 106 closes, and the corrugated air bladder... When the bladder 32 expands, it applies pressure to the water tank 2. The water in the water tank 2 is squeezed out and quickly discharged through the water outlet pipe 103. Then it enters the water pipe 1041 and the spray pipe 1042 in sequence, and finally sprays out through the nozzle 10421 to the inside of the dustproof net 13, thereby completing the rinsing of the dustproof net 13. After cleaning, wait for the next strong wind of level 4 or above (including level 4) to arrive. It should be noted that since the accumulation of dust is relatively slow, it is only necessary to clean it at least 2-3 times a year.

[0052] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A carbon dioxide sensor for environmental monitoring, comprising a sensor body (1), wherein a gas-sensitive probe (11) and a protective cover (12) are disposed at the bottom of the sensor body (1), the gas-sensitive probe (11) is located inside the protective cover (12), and dustproof nets (13) are disposed on both sides of the protective cover (12) near the bottom, characterized in that, A water tank (2) is fixedly installed on one side of the sensor body (1). A compressible air bladder (3) and a pressure plate (4) located at one end of the compressible air bladder (3) are installed inside the water tank (2). A sliding shaft (5) passing through one end of the water tank (2) is fixedly connected to one side of the pressure plate (4). A turntable (6) is installed on the top of the water tank (2). An eccentric shaft (7) is installed on the top of the turntable (6). The eccentric shaft (7) is movably connected to one end of the sliding shaft (5) through a connecting rod (8). A vertical rotating shaft (9) located on one side of the turntable (6) is installed on the top of the water tank (2). A bend (91) located above the water tank (2) and used in conjunction with the connecting rod (8) is provided on the vertical rotating shaft (9). A water tank (2) is provided inside the water tank (2). A float mechanism (101) for controlling the rotation of the vertical shaft (9) is provided above the water tank (2) to provide a one-way rotational driving force to the turntable (6). A water outlet pipe (103) and a water inlet pipe (108) are provided at the bottom of the water tank (2). One end of the water outlet pipe (103) is connected to a flushing part (104) located inside the protective cover (12). One end of the water inlet pipe (108) is fixedly connected to a rainwater collection funnel (105). The other end of the water inlet pipe (108) is provided with a push-button gate valve (106) located inside the water tank (2). A trigger frame (107) located inside the water tank (2) and opposite to the push-button gate valve (106) is fixedly connected to one side of the sliding shaft (5).

2. A carbon dioxide sensor for environmental monitoring according to claim 1, characterized in that, One end of the sliding shaft (5) is welded with a cantilever (51), the top of the cantilever (51) is rotatably connected to one end of the connecting rod (8), and a connecting hole (81) is opened on one side of the connecting rod (8) near the other end and sleeved on the outside of the eccentric shaft (7). The bend (91) is integrally set on the vertical rotating shaft (9) and has a semi-circular structure.

3. A carbon dioxide sensor for environmental monitoring according to claim 1, characterized in that, The compressible airbag (3) includes a positioning plate (31), a corrugated airbag (32) fixedly set on one side of the positioning plate (31), and a support spring (33) located inside the corrugated airbag (32). The other side of the positioning plate (31) is fixedly connected to a breathing tube (311) that passes through the water tank (2). The inner cavity of the corrugated airbag (32) is connected to the breathing tube (311), and its other end is opposite to the pressure plate (4).

4. A carbon dioxide sensor for environmental monitoring according to claim 1, characterized in that, The bottom of the vertical rotating shaft (9) is welded with a lever (92). The float mechanism (101) includes an L-shaped rod (1011), a transmission rod (1012), and a float (1013). One side of the L-shaped rod (1011) is fixedly connected to a positioning shaft (10111) that is rotatably connected to one side of the water tank (2). One end of the short rod of the L-shaped rod (1011) is connected to one end of the lever (92) by a ball joint through the transmission rod (1012). The float (1013) is fixedly installed on one end of the long rod of the L-shaped rod (1011).

5. A carbon dioxide sensor for environmental monitoring according to claim 1, characterized in that, The turntable (6) includes an outer ring disc (61), a fixed disc (62) sleeved inside the outer ring disc (61), and a ratchet mechanism located between the outer ring disc (61) and the fixed disc (62). The eccentric shaft (7) is fixedly installed on the top wall of the outer ring disc (61). The bottom of the fixed disc (62) is fixedly connected to the top wall of the water tank (2) through a limiting shaft (621). The wind drive mechanism (102) includes a drive shaft (1021), an impeller (1022), an intermediate gear (1023), and a draft shroud (1024). The drive shaft (1021) is fixedly sleeved with an intermediate gear (1023) that meshes with the outer ring disc (61). The impeller (1022) is fixedly sleeved on the upper part of the drive shaft (1021). The draft shroud (1024) covers the impeller (1022).

6. A carbon dioxide sensor for environmental monitoring according to claim 5, characterized in that, The air intake hood (1024) includes a circular hood (10241) and an inclined plate (10242) located inside the circular hood (10241). A vertical sleeve (102421) is provided through the inclined plate (10242). A central shaft (102411) is welded to the top inside the circular hood (10241) and is fitted inside the vertical sleeve (102421). The central shaft (102411) and the vertical sleeve (102421) are rotatably connected. Three circumferentially evenly distributed air intake cones (102412) are welded to the outer peripheral wall of the circular hood (10241).

7. A carbon dioxide sensor for environmental monitoring according to claim 1, characterized in that, The push-button gate valve (106) includes a valve tube (1061), a gate (1062), and a spring (1063). A valve chamber (10611) is provided inside the valve tube (1061). The gate (1062) and the spring (1063) are both located inside the valve chamber (10611). One end of the spring (1063) abuts against one end of the gate (1062). A flow passage hole (10621) is provided on the gate (1062). A push shaft (10622) with one end located outside the valve chamber (10611) is welded to one end of the gate (1062). The push shaft (10622) and the trigger frame (107) are opposite to each other.

8. A carbon dioxide sensor for environmental monitoring according to claim 1, characterized in that, The bottom of the protective cover (12) is V-shaped. Dustproof nets (13) are provided on both inclined surfaces of the protective cover (12). The flushing part (104) includes a water pipe (1041) and a spray pipe (1042) fixedly connected to the water pipe (1041) through a short pipe. The water pipe (1041) is provided through the bottom of the protective cover (12). There are two spray pipes (1042) located on both sides of the water pipe (1041). A row of nozzles (10421) opposite to the dustproof net (13) is fixedly connected to the outer wall of the spray pipe (1042). A baffle plate (10411) located below the gas-sensitive probe (11) is fixedly connected to the top of the water pipe (1041).

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