An automatic mobile vehicle for integrated bioaerosol detection and disinfection

Abstract

The present invention discloses an automatic cruise vehicle for integrated bioaerosol detection and disinfection, which relates to the technical field of bioaerosol detection and disinfection, and comprises a vehicle body. The vehicle body is internally provided with a collection and detection system for collecting and detecting external air, a purification treatment system for filtering and purifying external air, a spray disinfection system for disinfecting the external environment, and a drive obstacle avoidance system for controlling the movement of the vehicle. The system of the present invention has high overall integration and comprehensive functions, can detect the distribution density of bioaerosols in the environment in real time, and automatically disinfect designated areas. The various systems are enclosed and protected by the vehicle body, so that the overall structural position of each system of the device is stable and firm, not easily affected by external interference, and can work continuously for a long time.

Description

Technical Field

[0001] The present invention relates to the technical field of bioaerosol detection and disinfection, and in particular to an automatic traveling vehicle for integrated bioaerosol detection and disinfection. Background Art

[0002] Aerosols are a concept we encounter frequently in our daily lives. They refer to a multiphase system composed of solid or liquid particles ranging in size from 0.001 to 100 μm suspended in the atmosphere. The biologically active portion of these particles is called bioaerosols. Bioaerosols come in many forms, including bacteria, viruses, fungi, toxins, and chlamydia. Their high infectiousness and pathogenicity pose significant risks to human health. Therefore, the detection and control of bioaerosols is crucial for environmental protection and controlling the spread of infectious diseases.

[0003] In the prior art, the detection and disinfection of bioaerosol particles generally rely on independent equipment, that is, different equipment is required to complete the operations of sample collection, post-collection detection, and post-detection disinfection in sequence. The operation is relatively cumbersome, the degree of automation is low, and the work efficiency is not high. In addition, when collecting gas samples, such as the sample gas / sheath gas mixing device of an aerodynamic particle size spectrometer disclosed in Patent No. CN215004850U, the extracted gas sample often comes into contact with internal optical path components and other structures after entering the device. After multiple detection operations, dust, impurities and other substances in the gas sample will adhere to structures such as optical components, causing the light transmittance of the structure to decrease, thereby affecting the detection accuracy. In order to overcome the shortcomings of the prior art, the present invention proposes an integrated automatic traveling vehicle for detection and disinfection of bioaerosols. Summary of the Invention

[0004] The purpose of the present invention is to provide an automatic traveling vehicle for integrated bioaerosol detection and disinfection to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An integrated automated cruise vehicle for bioaerosol detection and disinfection comprises a vehicle body, with a plurality of drive wheels rotatably mounted on both sides of the bottom of the vehicle body; the vehicle body is internally provided with a collection and detection system for collecting and detecting external air, a purification system for filtering and purifying the external air, a spray disinfection system for disinfecting the external environment, and a drive and obstacle avoidance system for controlling the movement of the vehicle; the drive and obstacle avoidance system is used to control and adjust the operation of each drive wheel, thereby achieving autonomous movement and obstacle avoidance operations of the vehicle as a whole, and is implemented using existing technical means;

[0007] The collection and detection system includes a sheath gas mixing flow device and a particle detection optical path structure. The sheath gas mixing flow device is implemented using existing technical means. Its basic structure includes a housing, a bypass cavity is provided inside the housing, a gas sampling tube is fixedly connected to the top of the housing, a clean gas pipe is fixedly connected to one side of the housing, an injection head is provided at the bottom of the housing, and a detection box is provided below the injection head. The detection point of the particle detection optical path structure is provided inside the detection box and is arranged corresponding to the bottom of the injection head;

[0008] The top of the filter housing is fixedly provided with a filter cloth, and the bottom of the filter housing is fixedly provided with a filter cloth.

[0009] The other end of the air intake pipe is fixedly connected to several air intake diversion pipes, the bottom of both sides of the vehicle body are fixedly connected to several air intake cover plates, the inner walls of several air intake cover plates are fixedly connected to air intake partitions, and one side of several air intake cover plates is respectively fixedly connected to one end of several air intake diversion pipes.

[0010] As a further solution of the present invention: a plurality of filter collars are snap-connected to the middle of the filter cartridge, and a filter core is fixedly connected to the inner walls of the plurality of filter collars;

[0011] As a further solution of the present invention: the detection box is made of transparent material, the inner wall of the detection box is slidably connected with a closed gasket, an adjusting cylinder is provided below the closed gasket, and the output end of the adjusting cylinder is fixedly connected to the bottom of the closed gasket.

[0012] As a further solution of the present invention: a gas cylinder is fixedly installed at the bottom of the inner wall of the vehicle body, an output end of the gas cylinder is fixedly connected to the clean gas pipe, and a regulating valve is fixedly installed in the middle of the clean gas pipe.

[0013] As a further solution of the present invention: the spray disinfection system includes a storage box, the inner wall of the storage box is fixedly connected with a partition plate, the top of the partition plate is fixedly connected with a support frame, the inner wall of the support frame is snap-connected with a disinfection tank, the bottom of the disinfection tank is fixedly connected with a drain pipe, and a water pump fixedly connected to the bottom of the inner wall of the storage box is provided below the partition plate, the water inlet end of the water pump is fixedly connected with a water inlet pipe, the water inlet pipe and the drain pipe are plugged and snap-fitted, the output end of the water pump is fixedly connected with a water outlet pipe, one end of the water outlet pipe extends to the outside of the storage box and is fixedly connected with a diverter plate, the top of the diverter plate is fixedly connected with several disinfection diverter pipes, the tops of the side walls around the vehicle body are fixedly connected with spray frames, the inner walls of the four spray frames are fixedly connected with several atomizing nozzles, and several disinfection spray pipes are respectively fixedly connected to several atomizing nozzles.

[0014] Compared with the existing technology, the present invention has the following advantages: by centrally arranging various dispersed systems in the vehicle body, the present invention has a high degree of integration and comprehensive functions. It can detect the distribution density of bioaerosols in the environment in real time and automatically disinfect designated areas. The vehicle body is used to enclose and protect each system, making the overall structure of each system of the device stable and firm, not easily affected by external interference, and able to work continuously for a long time.

[0015] The present invention achieves sealing of the detection box by arranging a detection box at the detection point and arranging a sealing gasket on the inner wall of the detection box. During detection, the regulating cylinder drives the sealing gasket downward to make way for the detection point. At the same time, the suction effect brought about by the downward movement of the sealing gasket facilitates the gas to be detected and the sheath gas in the bypass cavity to enter the detection box. The reciprocating motion of the sealing gasket also simultaneously achieves cleaning of the inner wall of the detection box, thereby reducing the problem of dust and impurities adsorbed on the inner wall of the detection box, which leads to a decrease in detection accuracy.

[0016] The present invention provides a purification filter plate unit to filter and clean the air in the surrounding environment when the distribution density of bioaerosol particles is low and no disinfection is required, thereby reducing the content of dust and other pollutants in the air, improving air cleanliness, and enhancing the versatility of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A perspective view of the present invention;

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the vehicle body of the present invention;

[0019] Figure 3 Schematic diagram of the particle detection optical path structure of the present invention;

[0020] Figure 4 is a cross-sectional view of the filter box of the present invention;

[0021] Figure 5 It is a cross-sectional view of the storage box of the present invention.

[0022] In the figure: 1, pump light source; 101, detection point; 2, beam expander lens; 3, collimator lens; 4, cylindrical lens; 5, concave reflector; 6, first focusing lens; 7, second focusing lens; 8, beam splitter; 9, third focusing lens; 10, fourth focusing lens; 11, first photodetector; 12, second photodetector; 13, protective cover box; 14, gas injection tube; 15, housing; 16, detection box; 17, injection head; 18, clean gas pipe; 19, sealing gasket; 20, gas cylinder ; 21. Filter box; 22. Air intake cover; 23. Exhaust diverter pipe; 24. Exhaust slot; 25. Filter discharge pipe; 26. Filter disc rack; 27. Filter material layer; 28. Docking pipe; 29. ​​Filter cartridge; 30. Filter collar; 31. Filter air pump; 32. Air intake pipe; 33. Storage box; 34. Support frame; 35. Disinfection tank; 36. Water pump; 37. Water outlet pipe; 38. Disinfection diverter pipe; 39. Jet frame; 40. Vehicle body; 41. Driving wheel; 42. Ultrasonic ranging module. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-Figure 5 In an embodiment of the present invention, an automatic mobile vehicle for integrated bioaerosol detection and disinfection includes a vehicle body 40, and a plurality of drive wheels 41 are rotatably installed on both sides of the bottom of the vehicle body 40; the interior of the vehicle body 40 is provided with a collection and detection system for collecting and detecting external air, a purification system for filtering and purifying the external air, a spray disinfection system for disinfecting the external environment, and a drive obstacle avoidance system for controlling the movement of the vehicle; the system has a high overall integration and comprehensive functions, can detect the distribution density of bioaerosols in the environment in real time, and automatically disinfect the designated area, through the vehicle body 40, the overall structure is stable and firm, not easily affected by external interference, and can work continuously for a long time.

[0025] The collection and detection system includes a sheath gas mixing flow device and a particle detection optical path structure. The sheath gas mixing flow device is implemented using existing technical means. Its basic structure includes a housing 15, an internal bypass chamber of the housing 15, a gas sampling tube 14 fixedly connected to the top of the housing 15, a clean air pipe 18 fixedly connected to one side of the housing 15, an injection head 17 provided at the bottom of the housing 15, and a detection box 16 provided below the injection head 17. The detection point 101 of the particle detection optical path structure is provided inside the detection box 16 and is arranged corresponding to the bottom of the injection head 17; a gas cylinder 20 is fixedly installed at the bottom of the inner wall of the vehicle body 40, the output end of the gas cylinder 20 is fixedly connected to the clean air pipe 18, and a regulating valve is fixedly installed in the middle of the clean air pipe 18;

[0026] See also Figure 3 In this embodiment, the particle detection optical path structure includes four parts: a pump light source 1, a shaping optical path, a detection optical path, and a photodetector;

[0027] Pump light source 1 is a continuous laser light source with a wavelength of 405 nm;

[0028] The shaping optical path includes: a beam expander lens 2, a collimator lens 3, and a cylindrical lens 4. The focal length of the beam expander lens 2 is 5mm, the focal length of the collimator lens 3 is 35mm, and the focal length of the cylindrical lens 4 is 40mm. The length of the linear spot formed is 10mm. The transmittance of all optical components in the shaping optical path exceeds 95% at 405nm.

[0029] The detection optical path includes: a concave reflector 5, a first focusing lens 6, a second focusing lens 7, a beam splitter 8, a third focusing lens 9, and a fourth focusing lens 10. The concave reflector 5 is a spherical reflector with its center located at the intersection of the laser light beam and the airflow, i.e., the detection point 101. The main axis of the concave reflector 5 is perpendicular to the laser beam. The first focusing lens 6 converges the fluorescence and scattered light generated by the interaction of the laser beam and bioaerosol particles, and then forms a parallel signal beam through the second focusing lens 7. The signal beam passes through the beam splitter 8 and is transmitted / reflected according to wavelength. The reflected signal light passes through the third focusing lens 9 and is focused onto the first photodetector 11. The transmitted signal light passes through the fourth focusing lens 10 and is focused onto the second photodetector 12.

[0030] In the detection optical path, the concave reflector 5 has a focal length of 45 mm, and the focal lengths of the first focusing lens 6, the second focusing lens 7, the third focusing lens 9, and the fourth focusing lens 10 are all 35 mm. The beam splitter 8 has a central wavelength of 500 nm and forms an angle of 45° with the main optical axis of the detection optical path. Signal light with a wavelength greater than 500 nm is transmitted, while signal light with a wavelength less than 500 nm is reflected. The first photodetector 11 and the second photodetector 12 input the collected signals into a computer via a data line for analysis. The computer can be installed inside the vehicle body. To ensure the stability of the particle detection optical path structure, the entire particle detection optical path structure is installed in a protective cover box 13.

[0031] The sheath gas mixing flow device operates as follows: the gas to be detected enters the device through the gas inlet tube 14. The regulating valve is opened, and the clean gas without aerosol particles enters the bypass cavity through the clean gas pipe 18. The gas passes through the cavity inner wall and reaches the injection head 17. Finally, the gas is ejected from the injection head 17 into the detection box 16 and intersects with the laser beam at the detection point 101.

[0032] The inner wall of the detection box 16 is slidably connected with a closed gasket 19. The closed gasket is made of rubber and fits stably with the inner cavity of the detection box 16 to achieve sealing of the detection box 16. An adjusting cylinder is provided below the closed gasket 19. The output end of the adjusting cylinder is fixedly connected to the bottom of the closed gasket 19. When performing detection, the closed gasket 19 is driven downward by the adjusting cylinder to make room for the detection point 101. At the same time, the suction force brought by the downward movement facilitates the gas to be detected and the sheath gas in the bypass cavity to enter the detection box 16. The reciprocating motion of the closed gasket also simultaneously achieves the cleaning of the inner wall of the detection box 16, avoiding the problem of dust and impurities being adsorbed on the inner wall of the detection box 16, resulting in a decrease in detection accuracy.

[0033] The spray disinfection system includes a storage box 33, the inner wall of the storage box 33 is fixedly connected to a partition plate, the top of the partition plate is fixedly connected to a support frame 34, the inner wall of the support frame 34 is connected to a disinfection tank 35, the bottom of the disinfection tank 35 is fixedly connected to a drainage pipe, and a water pump 36 fixedly connected to the bottom of the inner wall of the storage box 33 is provided below the partition plate. The water inlet end of the water pump 36 is fixedly connected to the water inlet pipe, the water inlet pipe and the drainage pipe are plugged and engaged, and the output end of the water pump 36 is fixedly connected to the water outlet pipe 37 One end of the water outlet pipe 37 extends to the outside of the storage box 33 and is fixedly connected to a diverter plate. The top of the diverter plate is fixedly connected to several disinfection diverter pipes 38. The tops of the side walls around the vehicle body 40 are fixedly connected to spray racks 39. The inner walls of the four spray racks 39 are fixedly connected to several atomizing nozzles, and several disinfection spray pipes are respectively fixedly connected to several atomizing nozzles. By arranging multiple atomizing nozzles around the vehicle body 40 to deliver disinfectant, the distribution of the disinfectant is more uniform and the disinfection effect is better.

[0034] After the computer analyzes and processes the results of the gas to be detected, if the distribution density of the bioaerosol particles in the detected gas is greater than or equal to the preset critical value, the computer will issue an instruction to control the water pump 36 to pump out the chlorine dioxide solution in the disinfection tank 35. Through the outlet pipe 37 and the diversion plate, there are several disinfection diversion pipes 38 to send it into several atomizing nozzles, and the atomizing nozzles spray chlorine dioxide spray to disinfect the external environment. Chlorine dioxide solution is used as a disinfectant. Compared with common disinfectants such as hypochlorous acid, hydrogen peroxide, and peracetic acid, chlorine dioxide is less harmful to human skin and respiratory system, and is suitable for disinfection in public places with a large number of people.

[0035] The purification treatment system includes a filter box 21, one side of the filter box 21 is fixedly connected to an air inlet pipe 32, one end of the air inlet pipe 32 is fixedly connected to a filter air pump 31, the output end of the filter air pump 31 is fixedly connected to a filter cartridge 29 through a connecting pipe, the end of the filter cartridge 29 away from the filter air pump 31 is fixedly connected to a docking pipe 28, one side of the docking pipe 28 is fixedly connected to a filter disc holder 26, the inner wall of the filter disc holder 26 is rotatably connected to a filter conversion disc, a switching motor is fixedly installed at the bottom of the filter disc holder 26, the output end of the switching motor is fixedly connected to the bottom of the filter conversion disc, the filter conversion disc includes a partition frame, the inner wall of the partition frame is fixedly connected to a plurality of equidistantly arranged filter material layers 27, the top of the filter disc holder 26 is fixedly connected to The filter discharge pipe 25 has a plurality of exhaust manifolds 23 fixedly connected to its top. A plurality of exhaust slots 24 are fixedly connected to both sides of the top of the vehicle body 40. The bottoms of the plurality of exhaust slots 24 are respectively fixedly connected to the plurality of exhaust manifolds 23. The bottom of the filter discharge pipe 25 is arranged corresponding to the top of the docking pipe 28. A through slot is provided on the top of the filter disc holder 26 away from the filter discharge pipe 25. The other end of the intake pipe 32 is fixedly connected to a plurality of intake manifolds. The bottoms of both sides of the vehicle body 40 are fixedly connected to a plurality of intake cover plates 22. The inner walls of the plurality of intake cover plates 22 are fixedly connected to intake screens. One side of the plurality of intake cover plates 22 is respectively fixedly connected to one end of the plurality of intake manifolds.

[0036] By setting up a purification filter plate unit, when the distribution density of bioaerosol particles is low and no disinfection is required, the air in the surrounding environment can be filtered and cleaned, reducing the content of dust and other pollutants in the air, improving air cleanliness, and enhancing the versatility of the device.

[0037] Different filter materials can be selected for each material layer to meet the filtering operation requirements under different environmental conditions. By setting a switching motor to drive the filter conversion disk to rotate as a whole, different filter material layers 27 at different positions correspond to the docking pipe 28 and the filter discharge pipe 25, realizing the switching of the filtering function. When necessary, the filter material layer 27 can also be removed and replaced through the through slot to ensure the overall filtering effect of the tight-ring filtration system.

[0038] If the detected bioaerosol particle distribution density in the environment is less than the critical value, the computer does not issue a working instruction for the water pump 36. At this time, the filter air pump 31 starts working, and the external environmental gas enters the air intake diversion pipe through each air intake cover plate 22, passes through the air intake pipe 32, the filter air pump 31, the connecting pipe and the filter cartridge 29, and is sent to the filter disc rack 26 through the docking pipe 28. After passing through the filter material layer 27 and completing the filtration, it enters the filter exhaust pipe 25, is then diverted by several exhaust diversion pipes 23, and is discharged through several exhaust slots 24.

[0039] The middle of the filter cartridge 29 is snap-connected with a plurality of filter collars 30 , and the inner walls of the plurality of filter collars 30 are fixedly connected with filter cores. The plurality of filter cores can be water removal filter cores or dust removal filter cores, etc., which can be selected and replaced according to actual conditions.

[0040] The driving obstacle avoidance system is used to control and adjust the operation of each driving wheel 41, thereby realizing the autonomous movement and obstacle avoidance operation of the entire vehicle, and is implemented using existing technical means; it mainly includes: an ultrasonic ranging module 42, which emits an ultrasonic signal. After the built-in receiving circuit receives the signal, it is amplified, detected, filtered and level compared, and then converted into a level signal, which is sent to the computer for processing. At the same time, the rotation and direction of the driving wheel 41 are controlled by the distance predicted by the ultrasound, realizing autonomous navigation and precise obstacle avoidance.

[0041] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An integrated automatic traveling vehicle for bioaerosol detection and disinfection, characterized in that: The vehicle comprises a vehicle body (40), wherein the vehicle body (40) is provided with a collection and detection system for collecting and detecting external air, a purification system for filtering and purifying the external air, a spray disinfection system for disinfecting the external environment, and a driving obstacle avoidance system for controlling the movement of the vehicle; The acquisition and detection system includes a sheath gas mixing flow device and a particle detection optical path structure. The sheath gas mixing flow device includes a shell (15), a flow chamber is provided inside the shell (15), a gas sampling tube (14) is fixedly connected to the top of the shell (15), a clean gas tube (18) is fixedly connected to one side of the shell (15), an injection head (17) is provided at the bottom of the shell (15), a detection box (16) is provided below the injection head (17), and a detection point of the particle detection optical path structure is provided inside the detection box (16) and is provided corresponding to the bottom of the injection head (17).

2. The integrated bioaerosol detection and disinfection automatic traveling vehicle according to claim 1 is characterized in that: The inner wall of the detection box (16) is slidably connected to a closed gasket (19), an adjusting cylinder is provided below the closed gasket (19), and the output end of the adjusting cylinder is fixedly connected to the bottom of the closed gasket (19).

3. The bioaerosol detection and disinfection integrated automatic moving vehicle according to claim 1 is characterized in that: The purification treatment system comprises a filter box (21), one side of the filter box (21) is fixedly connected to an air inlet pipe (32), one end of the air inlet pipe (32) is fixedly connected to a filter air pump (31), an output end of the filter air pump (31) is provided with a filter cartridge (29), one end of the filter cartridge (29) is fixedly connected to a docking pipe (28), one side of the docking pipe (28) is fixedly connected to a filter disc holder (26), an inner wall of the filter disc holder (26) is rotatably connected to a filter conversion disc, a switching motor is fixedly installed at the bottom of the filter disc holder (26), the output end of the switching motor is fixedly connected to the bottom of the filter conversion disc, the filter conversion disc comprises a partition frame, the inner wall of the partition frame is fixedly connected to a plurality of filter material layers (27) arranged at equal intervals, a top of the filter disc holder (26) is fixedly connected to a filter discharge pipe (25), and a through groove is provided on a side of the top of the filter disc holder (26) away from the filter discharge pipe (25).

4. The bioaerosol detection and disinfection integrated automatic moving vehicle according to claim 3 is characterized in that: A plurality of filter collars (30) are snap-connected to the middle of the filter cartridge (29), and filter cores are fixedly connected to the inner walls of the plurality of filter collars (30).

5. The integrated bioaerosol detection and disinfection automatic traveling vehicle according to claim 3 is characterized in that: The other end of the air intake pipe (32) is fixedly connected to a plurality of air intake shunt pipes, the bottoms of both sides of the vehicle body (40) are fixedly connected to a plurality of air intake cover plates (22), the inner walls of the plurality of air intake cover plates (22) are fixedly connected to air intake screens, and one side of the plurality of air intake cover plates (22) is fixedly connected to one end of the plurality of air intake shunt pipes.

6. The bioaerosol detection and disinfection integrated automatic moving vehicle according to claim 1 is characterized in that: A gas cylinder (20) is fixedly mounted on the bottom of the inner wall of the vehicle body (40), an output end of the gas cylinder (20) is fixedly connected to a clean gas pipe (18), and a regulating valve is fixedly mounted in the middle of the clean gas pipe (18).

7. The bioaerosol detection and disinfection integrated automatic moving vehicle according to claim 1 is characterized in that: The spray disinfection system includes a storage box (33), a disinfection tank (35) is arranged inside the storage box (33), the bottom of the disinfection tank (35) is fixedly connected to a drainage pipe, the bottom of the inner wall of the storage box (33) is fixedly connected to a water pump (36), the water inlet end of the water pump (36) is fixedly connected to the water inlet pipe, the water inlet pipe and the drainage pipe are plugged and engaged, the output end of the water pump (36) is fixedly connected to the water outlet pipe (37), one end of the water outlet pipe (37) is fixedly connected to a diversion plate, the top of the diversion plate is fixedly connected to a plurality of disinfection diversion pipes (38), the tops of the four side walls of the vehicle body (40) are fixedly connected to a spray rack (39), the inner walls of the four spray racks (39) are fixedly connected to a plurality of atomizing nozzles, and the plurality of disinfection spray pipes are respectively fixedly connected to the plurality of atomizing nozzles.

Images