An environmental temperature and humidity and particulate matter detection device for internet of things
By using a microwave Doppler sensor and a smooth inner wall airflow channel design in the environmental monitoring device, the problems of easy damage to particulate matter detectors and unreasonable airflow channels are solved, achieving high durability and high accuracy in air detection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- XINJIANG LUGE JIERUI ENVIRONMENTAL TESTING TECH CO LTD
- Filing Date
- 2026-05-31
- Publication Date
- 2026-07-17
AI Technical Summary
In existing environmental monitoring devices, particulate matter detectors are susceptible to decreased sensitivity and damage due to the adhesion of suspended matter. Inadequate airflow channel design leads to problems with detection accuracy and airtightness, increasing maintenance frequency and costs.
Using a microwave Doppler sensor as a particle detector, the detection end does not come into contact with the gas, and the airflow channel with a smooth inner wall design, combined with a detachable housing structure, avoids the adhesion of suspended matter and gas leakage, simplifying maintenance.
It improves the durability and accuracy of the detection device, reduces the maintenance frequency, adapts to extreme temperature environments, and ensures airtightness and sample integrity.
Smart Images
Figure CN122409448A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of air detection technology, and specifically discloses an Internet of Things (IoT) device for detecting environmental temperature, humidity and particulate matter. Background Technology
[0002] Particulate matter (such as PM2.5 and PM10) in ambient air, as well as temperature and humidity, are important indicators for measuring air quality. Real-time and accurate detection of these parameters is of great significance for environmental protection, industrial production, and public health. Currently, commercially available environmental monitoring devices typically integrate temperature, humidity, and particulate matter sensors, introducing the air sample to be tested into the detection area through an airflow channel to achieve simultaneous monitoring of multiple parameters.
[0003] Existing particulate matter detection methods mostly employ optical scattering or laser scattering principles. When suspended particles in the air pass through a photosensitive area, the resulting scattered light flux is converted into photoelectric flux and used to analyze particle concentration. In such devices, to obtain accurate detection data, an external air sample is typically drawn in using a power component such as an air pump and circulated through the sensing end of the particulate matter detector. However, this design has a significant technical drawback: during long-term continuous operation, suspended particles in the air easily adhere to and accumulate on the surface of the detection end of the particle detection structure. This can not only lead to a decrease in detection sensitivity and data distortion, but in severe cases, it can even physically damage the delicate particulate matter sensor, significantly shortening the overall lifespan of the detection device and increasing maintenance frequency. To address the problem of particulate matter adhesion on the sensor surface, existing technologies have researched non-contact cleaning methods such as ultrasonic cleaning. However, these methods require additional complex cleaning mechanisms, increasing system cost and structural complexity.
[0004] Furthermore, the airflow channel structure and airtightness of existing detection devices are also key factors affecting detection accuracy and equipment stability. If the airflow channel design is unreasonable, or if there are sealing problems at the connection between the particulate matter detector and the pipeline, it may not only lead to leakage of the measured gas, affecting the accuracy of the detection results, but also allow pollutants from the external environment to enter the equipment and corrode other precision components.
[0005] Therefore, how to effectively avoid contamination or damage to the sensor by particulate matter in the measured gas while performing multi-parameter detection of ambient air, simplify equipment maintenance, and ensure the stability and airtightness of the detection process are technical problems that urgently need to be solved by those skilled in the art. Summary of the Invention
[0006] In view of this, the purpose of the present invention is to provide an environmental temperature, humidity and particulate matter detection device for the Internet of Things, so as to solve the problems mentioned above.
[0007] To achieve the above objectives, the present invention provides an IoT-based environmental temperature, humidity, and particulate matter detection device, comprising a housing, an internally connected collection tube and an exhaust tube, a glass tube connected between the collection tube and the exhaust tube, a particulate detector connected to the glass tube, a temperature detector and a humidity detector connected to the collection tube, an air inlet fixed to the receiving end of the collection tube, an airflow detector connected to the air inlet, and a processing module fixed inside the housing, wherein the temperature detector, airflow detector, humidity detector, and particulate detector are connected to the processing module;
[0008] The air intake component includes a collection hopper fixed to the receiving end of the collection pipe, the airflow detector is connected to the collection hopper, a fixing ring is fixed to the upper end of the collection hopper, the fixing ring is fixed to the housing component, and a filter shell is detachably connected to the receiving end of the fixing ring.
[0009] In the above technical solution, the collecting hopper is a bucket-shaped structure, the fixing ring is integrally fixed with the collecting hopper, and the filter shell is a conical shell with openings on the outer wall.
[0010] In the above technical solution, the discharge component further includes a filter tube fixed to the discharge end of the glass tube, an axial flow fan fixed to the discharge end of the filter tube, and an air outlet pipe connected to the discharge end of the axial flow fan.
[0011] In the above technical solution, the fixing ring, the collecting hopper, the collecting tube, and the glass tube form an airflow channel. The inner walls of the fixing ring, the collecting hopper, the collecting tube, and the glass tube are all smooth structures. The collecting tube and the glass tube are detachably connected.
[0012] In the above technical solution, the housing component further includes a housing structure, on which a disassembly shell is detachably connected. The collecting tube and the glass tube are detachably connected inside the disassembly shell, and the venting tube is detachably connected to one side of the disassembly shell.
[0013] In the above technical solution, further, the disassembly shell is connected to an exhaust structure and a filter screen, the storage end of the exhaust structure is opposite to the filter screen, and filter cotton is embedded in the filter screen.
[0014] In the above technical solution, the particle detector is further described as a microwave Doppler sensor, with the detection end of the particle detector abutting against the glass tube, and the detection end of the particle detector not contacting the gas inside the glass tube.
[0015] In the above technical solution, the housing structure is further provided with an operation module, a display module and a wireless module, the operation module, the display module and the wireless module are connected to the processing module, and the processing module contains control commands.
[0016] In the above technical solution, further, during use, the information detected by the temperature detector, particle detector and humidity detector is processed by the processing module, and then the processing module displays the processed information through the display module. At the same time, the processing module transmits the processed information to an external computer system through the wireless module.
[0017] Compared with the prior art, the present invention has the following beneficial effects:
[0018] 1. This detection device uses a microwave Doppler sensor as the particle detector, with its detection end resting against a glass tube without contacting the gas to be detected. This non-contact detection method solves the problem in existing technologies where suspended particles adhere to the detection end of the particle detection structure, causing damage. Since the detection end does not need to be exposed to the airflow, airborne particles cannot accumulate on its surface, thus avoiding performance degradation or damage to the sensor due to contamination, significantly improving the device's durability.
[0019] 2. The detection device uses a microwave Doppler sensor, which reduces the maintenance frequency of the device and enables it to work stably in extreme temperature environments, solving the problem of traditional optical sensors being prone to failure and having poor adaptability in high or low temperature environments.
[0020] 3. The detection end of the particle detector in this testing device only abuts against the outer wall of the glass tube, without damaging the physical structure of the glass tube. This not only ensures the overall airtightness of the airflow channel, preventing the detected air from leaking into the disassembled shell and causing corrosion to other precision components, but also ensures the integrity of the test sample and improves the accuracy of the test.
[0021] 4. The disassembly shell of this detection device is detachably connected to the housing structure. When the temperature detector, particle detector, and humidity detector inside the disassembly shell are damaged, the disassembly shell can be directly disassembled from the housing structure. This structural design can avoid the need for personnel to disassemble the detection device over a large area when it is damaged. At the same time, the inner walls of the fixing ring, collection hopper, collection tube, and glass tube in this detection device are all smooth structures, which can prevent particulate matter in the gas to be tested from adhering to the inner wall of the airflow channel, increasing the portability of the detection device for maintenance. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the structure of the present invention;
[0023] Figure 2 This is a connection structure diagram of the display module and the housing structure in this invention;
[0024] Figure 3This is a diagram showing the connection structure between the exhaust structure and the disassembly shell in this invention;
[0025] Figure 4 This is a diagram showing the connection structure between the collection tube and the glass tube and the disassembly shell in this invention;
[0026] Figure 5 This is a structural diagram showing the disassembled structure of the collecting tube and the glass tube in this invention;
[0027] Figure 6 This is a diagram showing the connection structure between the collecting hopper and the fixing ring in this invention;
[0028] Figure 7 This is a flowchart of the workflow in this invention;
[0029] Figure 8 This is a diagram showing the connection structure between the collection tube and the glass tube in this invention.
[0030] 1. Housing structure; 11. Operation module; 12. Display module; 13. Wireless module; 2. Disassembly housing; 21. Exhaust structure; 22. Exhaust pipe; 23. Filter housing; 24. Fixing ring; 25. Filter screen; 26. Processing module; 3. Collection pipe; 31. Collection hopper; 32. Temperature detector; 33. Particle detector; 34. Filter pipe; 35. Axial flow fan; 36. Airflow detector; 37. Glass tube; 38. Humidity detector. Detailed Implementation
[0031] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0032] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.
[0033] Example 1: Please refer to Figures 1-8 As shown, the present invention provides a technical solution:
[0034] This invention is an IoT-based environmental temperature, humidity, and particulate matter detection device, comprising a housing, an internally connected collection tube 3 and an exhaust tube, a glass tube 37 connected between the collection tube 3 and the exhaust tube, a particulate detector 33 connected to the glass tube 37, a temperature detector 32 and a humidity detector 38 connected to the collection tube 3, an air inlet fixed to the receiving end of the collection tube 3, an airflow detector 36 connected to the air inlet, and a processing module 26 fixed inside the housing, with the temperature detector 32, airflow detector 36, humidity detector 38, and particulate detector 33 connected to the processing module 26;
[0035] The air intake component includes a collection hopper 31 fixed to the receiving end of the collection pipe 3, an airflow detector 36 connected to the collection hopper 31, a fixing ring 24 fixed to the upper end of the collection hopper 31, the fixing ring 24 fixed to the housing component, and a filter shell 23 detachably connected to the receiving end of the fixing ring 24.
[0036] The collecting hopper 31 has a bucket-shaped structure, and the fixing ring 24 is fixed to the collecting hopper 31 as a whole. The filter shell 23 is a cone-shaped shell with holes on the outer wall. Alternatively, the filter shell 23 can be a mesh structure woven from metal strips.
[0037] The discharge component includes a filter tube 34 fixed to the discharge end of the glass tube 37, an axial flow fan 35 fixed to the discharge end of the filter tube 34, and an air outlet pipe 22 connected to the discharge end of the axial flow fan 35.
[0038] The fixing ring 24, the collecting hopper 31, the collecting tube 3, and the glass tube 37 form an airflow channel. The inner walls of the fixing ring 24, the collecting hopper 31, the collecting tube 3, and the glass tube 37 are all smooth. The collecting tube 3 and the glass tube 37 are detachably connected.
[0039] The housing component includes a housing structure 1, a disassembly shell 2 detachably connected to the housing structure 1, a collection tube 3 and a glass tube 37 detachably connected inside the disassembly shell 2, and an exhaust pipe 22 detachably connected to one side of the disassembly shell 2.
[0040] The disassembly shell 2 is connected to an exhaust structure 21 and a filter plate 25. The storage end of the exhaust structure 21 is opposite to the filter plate 25, and filter cotton is embedded in the filter plate 25.
[0041] In actual use, the operator holds the housing structure 1, which is equipped with an operation module 11. The operator can start the axial flow fan 35 through the operation module 11. When the axial flow fan 35 is working, it can discharge the air inside the filter tube 34 to the outside. At this time, the inside of the filter tube 34 is under negative pressure. The filter tube 34 is a cylindrical structure, and a circular filter cotton sheet is placed inside the filter tube 34. When the axial flow fan 35 draws air from the inside of the filter tube 34, the filter cotton sheet can filter the air entering the axial flow fan 35 from the filter tube 34, thereby preventing particulate matter in the gas being detected from adhering to the inside of the axial flow fan 35.
[0042] When the inside of the filter tube 34 is under negative pressure, the gas to be detected can pass through the filter shell 23, the fixing ring 24, the collection hopper 31, the collection tube 3, and the glass tube 37 to enter the inside of the filter tube 34. When the gas to be detected enters the inside of the collection hopper 31, the airflow detector 36 can detect the speed at which the airflow passes through the inside of the collection hopper 31, and then transmit the detected information to the processing module 26.
[0043] When the airflow detector 36 detects that the airflow velocity is greater than the preset value, the processing module 26 can start the temperature detector 32, humidity detector 38 and particle detector 33 to work. At this time, the temperature detector 32 and humidity detector 38 can detect the airflow velocity inside the collection tube 3, and the particle detector 33 can detect the particulate matter content of the gas inside the glass tube 37.
[0044] The housing structure 1 is also equipped with a wireless module 13, which is connected to the processing module 26. When the temperature detector 32, humidity detector 38 and particle detector 33 are working, the information detected by the temperature detector 32, humidity detector 38 and particle detector 33 will be transmitted to the inside of the processing module 26. Then the processing module 26 will transmit this detection information to the wireless module 13. The wireless module 13 can transmit the information transmitted by the processing module 26 to an external computer system. The staff can then retrieve the gas detection information of the temperature detector 32, humidity detector 38 and particle detector 33 through the external computer system, and then determine whether the detected information meets the environmental protection requirements.
[0045] In actual use, the discharge end of glass tube 37 is disconnected from the storage end of filter tube 34, and the filter cotton pads inside filter tube 34 are disconnected from filter tube 34. The staff can replace the filter cotton pads inside filter tube 34 regularly, thereby preventing the gas being tested from damaging the axial flow fan 35.
[0046] When the fixed ring 24 is in use, the operator can remove the filter shell 23 from the fixed ring 24 and then connect the discharge end of the external gas delivery structure to the fixed ring 24. This allows the external gas delivery structure to deliver the gas to be detected to the inside of the collection tube 3 and the glass tube 37, thereby enabling the temperature detector 32, humidity detector 38 and particle detector 33 to stably detect the gas.
[0047] When the detection device is working, the air inside the disassembled shell 2 will experience a temperature rise. In order to ensure the stable operation of the temperature detector 32, humidity detector 38, and particle detector 33 inside the device, the operator can control the ventilation structure 21 through the operation module 11. At this time, the ventilation structure 21 can drive the high-temperature air inside the disassembled shell 2 to be discharged. When the high-temperature air inside the disassembled shell 2 is discharged, the outside air will pass through the filter screen 25 and enter the interior of the disassembled shell 2. When the outside air passes through the filter screen 25 and enters the interior of the disassembled shell 2, the particulate matter in the outside air will be filtered by the filter cotton on the filter screen 25. This can prevent the airborne suspended matter entering the disassembled shell 2 from damaging the ventilation structure 21, so as to ensure the stable discharge of the high-temperature air inside the disassembled shell 2 and facilitate the stable operation of the temperature detector 32, humidity detector 38, and particle detector 33 inside the disassembled shell 2.
[0048] The disassembly shell 2 in the detection device is detachably connected to the housing structure 1. When the temperature detector 32, particle detector 33 and humidity detector 38 inside the disassembly shell 2 are damaged, the disassembly shell 2 can be directly disassembled from the housing structure 1. This structural design can avoid the need for staff to disassemble the detection device over a large area when it is damaged. At the same time, the inner walls of the fixing ring 24, the collection hopper 31, the collection tube 3 and the glass tube 37 in the detection device are all smooth structures, which can prevent particulate matter in the gas to be tested from adhering to the inner wall of the airflow channel, increasing the portability of the detection device for maintenance.
[0049] Currently, air detectors on the market typically have their particle detection structures directly contacting the air inside the airflow channel when they are working. This design can easily cause suspended particles to adhere to the detection end of the particle detection structure, which can damage the particle detection structure and reduce its actual service life. To solve the above problems, the following structure is proposed.
[0050] Example 2: Please refer to Figures 1-8 As shown, based on Embodiment 1, the present invention provides a technical solution. Unlike Embodiment 1, the particle detector 33 in this embodiment is a microwave Doppler sensor, which can prevent the particle detector 33 from contacting the detected air and avoid the detected air from leaking into the disassembly shell 2. On the other hand, it can make the detection device more adaptable and reduce the maintenance frequency of the detection device.
[0051] The particle detector 33 is a microwave Doppler sensor. The detection end of the particle detector 33 is in contact with the glass tube 37, but the detection end of the particle detector 33 is not in contact with the gas inside the glass tube 37.
[0052] The housing structure 1 is provided with an operation module 11, a display module 12 and a wireless module 13. The operation module 11, the display module 12 and the wireless module 13 are connected to the processing module 26, and the processing module 26 contains control commands.
[0053] In use, the information detected by temperature detector 32, particle detector 33 and humidity detector 38 is processed by processing module 26, and then the processing module 26 displays the processed information through display module 12. At the same time, the processing module 26 transmits the processed information to an external computer system through wireless module 13.
[0054] In practical use, the particle detector 33 in this detection device is a microwave Doppler sensor. The detection end of the particle detector 33 does not come into contact with the air being detected. Instead, the detection end of the particle detector 33 rests against the glass tube 37. During practical use, the microwave oscillator inside the sensor generates a high-frequency microwave signal (typically 5.8GHz-24GHz), which is directionally transmitted through the transmitting antenna. The microwave signal passes through the transparent glass tube 37 and enters the internal space of the tube. The microwave signal has the ability to penetrate the non-metallic glass tube 37. When the microwave signal encounters dust particles moving inside the glass tube 37, some of the energy is reflected back. Since the dust particles are moving relative to the particle detector 33, the frequency of the reflected wave changes according to the Doppler effect. The receiving antenna collects the reflected microwave signal, and the mixer mixes the transmitted signal and the received signal to generate a low-frequency difference frequency signal (Doppler signal). The algorithm built into the particle detector 33 can convert the signal characteristics into a dust concentration value. The converted information is then input into the processing module 26 via analog or digital signals.
[0055] When the processing module 26 receives the detection signal transmitted by the particle detector 33, the processing module 26 will transmit the processing information to the wireless module 13. Subsequently, the wireless module 13 will transmit the information transmitted by the processing module 26 to the external computer system, so that the staff can understand the particle content in the gas.
[0056] When the particle detector 33 in this detection device is selected to use a microwave Doppler sensor, the particle detector 33 can be kept away from the air being detected. On the one hand, this ensures the airtightness of the glass tube 37 and prevents the detected air from leaking into the disassembly shell 2. On the other hand, it can prevent airborne particles from damaging the particle detector 33. At the same time, the microwave Doppler sensor supports gas temperatures from -50℃ to 260℃, which makes the detection device widely adaptable and reduces the maintenance frequency of the detection device.
[0057] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.
Claims
1. An IoT-based environmental temperature, humidity, and particulate matter detection device, comprising a housing, characterized in that: The housing is internally connected to a collection pipe (3) and an exhaust device. A glass tube (37) is connected between the collection pipe (3) and the exhaust device. A particle detector (33) is connected to the glass tube (37). A temperature detector (32) and a humidity detector (38) are connected to the collection pipe (3). An air inlet is fixed to the receiving end of the collection pipe (3). An airflow detector (36) is connected to the air inlet. A processing module (26) is fixed inside the housing. The temperature detector (32), airflow detector (36), humidity detector (38), and particle detector (33) are connected to the processing module (26). The air intake component includes a collection hopper (31) fixed to the receiving end of the collection pipe (3), the airflow detector (36) is connected to the collection hopper (31), the upper end of the collection hopper (31) is fixed with a fixing ring (24), the fixing ring (24) is fixed to the housing component, and the receiving end of the fixing ring (24) is detachably connected to a filter shell (23).
2. The IoT-based environmental temperature, humidity, and particulate matter detection device according to claim 1, characterized in that, The collecting hopper (31) has a bucket-shaped structure, the fixing ring (24) and the collecting hopper (31) are fixed together, and the filter shell (23) is a cone-shaped shell with holes on the outer wall.
3. The IoT-based environmental temperature, humidity, and particulate matter detection device according to claim 1, characterized in that, The discharge component includes a filter tube (34) fixed to the discharge end of the glass tube (37), an axial flow fan (35) fixed to the discharge end of the filter tube (34), and an exhaust pipe (22) connected to the discharge end of the axial flow fan (35).
4. The IoT-based environmental temperature, humidity, and particulate matter detection device according to claim 3, characterized in that, The fixing ring (24) forms an airflow channel with the collecting hopper (31), the collecting pipe (3), and the glass tube (37). The inner walls of the fixing ring (24), the collecting hopper (31), the collecting pipe (3), and the glass tube (37) are all smooth. The collecting pipe (3) and the glass tube (37) are detachably connected.
5. The IoT-based environmental temperature, humidity, and particulate matter detection device according to claim 3, characterized in that, The housing component includes a housing structure (1), on which a disassembly shell (2) is detachably connected. The collection tube (3) and the glass tube (37) are detachably connected inside the disassembly shell (2), and the vent pipe (22) is detachably connected to one side of the disassembly shell (2).
6. The IoT-based environmental temperature, humidity, and particulate matter detection device according to claim 5, characterized in that, The disassembly shell (2) is connected to an exhaust structure (21) and a filter plate (25). The storage end of the exhaust structure (21) is opposite to the filter plate (25), and filter cotton is embedded in the filter plate (25).
7. The IoT-based environmental temperature, humidity, and particulate matter detection device according to claim 1, characterized in that, The particle detector (33) is a microwave Doppler sensor. The detection end of the particle detector (33) is in contact with the glass tube (37), and the detection end of the particle detector (33) is not in contact with the gas inside the glass tube (37).
8. The IoT-based environmental temperature, humidity, and particulate matter detection device according to claim 5, characterized in that, The housing structure (1) is provided with an operation module (11), a display module (12) and a wireless module (13). The operation module (11), the display module (12) and the wireless module (13) are connected to the processing module (26). The processing module (26) contains control commands.
9. The IoT-based environmental temperature, humidity, and particulate matter detection device according to claim 8, characterized in that, In use, the information detected by the temperature detector (32), particle detector (33) and humidity detector (38) is processed by the processing module (26), and then the processing module (26) displays the processed information through the display module (12). At the same time, the processing module (26) transmits the processed information to an external computer system through the wireless module (13).