Mobile large-flow outfield aerosol generating system

Abstract

The invention provides a mobile large-flow external-field aerosol generation system, which comprises a crawler-type maneuvering chassis, an aerosol generation unit and an auxiliary unit, can generate chemical and biological aerosols in a field / external-field environment, can autonomously set paths and navigations, constructs aerosol cloud clusters with specific areas and concentration distribution, and can generate aerosol cloud clusters with different concentrations. The problems that an existing aerosol generating device sold in the market is low in generating efficiency and small in aerosol supply amount, a large amount of aerosol cannot be generated in the field, and aerosol cloud clusters sprayed by part of non-special atomization equipment are unstable and not lasting are solved, the stable and lasting aerosol cloud clusters are formed, and the aerosol generating efficiency is improved. The method provides support for point detection and remote telemetering performance evaluation test of biological and chemical monitoring alarm equipment and external field performance evaluation test of personal or collective protection equipment and enrichment sampling equipment which need high-flow aerosol.

Description

Technical Field

[0001] The present invention belongs to the field of aerosol technology, and specifically relates to a mobile large-flow outdoor aerosol generating system, and more particularly to a system that can generate and control large-flow bioaerosols in an outdoor environment. Background Art

[0002] Biological and chemical aerosols have a wide dispersion range, are difficult to monitor, have a high potential for leakage, and pose a significant threat to public health and life. Currently, there is an increasing demand for biological and chemical aerosol sampling, detection, and alarm technologies and equipment in areas such as industrial and agricultural waste gas emissions, chemical and pharmaceutical storage and transportation, border and customs monitoring, and environmental quality monitoring in key areas such as medical care, transportation hubs, and gathering places. These technologies are also a key development direction in environmental monitoring, pollution control, disease surveillance, and public safety. Currently, there are a wide variety of commercially available aerosol monitoring, alarm, and sampling equipment, and the development of various aerosol detection technologies is becoming increasingly advanced, leading to an increasingly urgent need for the evaluation of aerosol monitoring, alarm, and sampling technologies and equipment.

[0003] Currently, performance evaluation of aerosol monitoring, alarm, and sampling technologies and equipment typically utilizes static generation methods in laboratory settings, which can meet the evaluation needs of some point-source monitoring and sampling equipment. For example, an aerosol generator is used to inject high-concentration bioaerosols into a mixing chamber, which are then diluted with a high-flow airflow to obtain a specific concentration of bioaerosol for performance evaluation of the bioaerosol monitoring, alarm, or sampling equipment under test. However, this method can only assess typical technical indicators (such as alarm time, detection limit, particle size range, and sampling efficiency). There are currently no dedicated field aerosol generation devices for evaluating bioaerosol remote sensing and alarm equipment and technologies, making it difficult to truly evaluate their actual performance in the field. Furthermore, chemical aerosols are typically released from cylinders, which cannot provide a stable, continuous, and controllable aerosol cloud with a controlled concentration and range for evaluation of chemical aerosol remote sensing and alarm equipment. Furthermore, most bioaerosol and chemical aerosol release devices are fixed, resulting in unclear aerosol cloud boundaries and an inability to create a large-scale, stable aerosol environment. Summary of the Invention

[0004] (1) Technical issues to be resolved

[0005] The present invention proposes a mobile high-flow outdoor aerosol generation system to solve technical problems such as low generation efficiency and small aerosol supply of existing commercially available aerosol generating devices, inability to generate large amounts of bioaerosols in the field, and unstable and non-persistent aerosol clouds sprayed by some non-dedicated atomization equipment.

[0006] (2) Technical solution

[0007] To solve the above technical problems, the present invention proposes a mobile large-flow outdoor aerosol generation system, which includes a crawler mobile chassis, an aerosol generation unit, and an auxiliary unit. Among them, the crawler mobile chassis is used to realize the traveling and communication functions of the mobile large-flow outdoor aerosol generation system, and control the aerosol generation unit and the auxiliary unit. The aerosol generation unit and the auxiliary unit are both installed on the crawler mobile chassis. The aerosol generation unit is used to generate a large flow of aerosol, and the auxiliary unit is used to conduct environmental monitoring and record video image information during traveling or operation.

[0008] Further, the crawler mobile chassis includes a traveling unit, a driving power unit, a vehicle body, a wireless communication device, a main control unit, a battery pack, a driving camera, and a navigation and obstacle avoidance unit. Among them, the traveling unit is a crawler traveling chassis installed outside the vehicle body, used to realize the traveling of the mobile large-flow outdoor aerosol generation system. The driving power unit is installed inside the vehicle body, used to provide power output for the traveling unit. The wireless communication device is installed on the vehicle body, used to realize the communication function with the outside. The main control unit is used to receive external control instructions and control other functional units, and feedback the data of each functional unit to the outside. The battery pack is used to supply power to various electrical devices in the mobile large-flow outdoor aerosol generation system. The driving camera is used to provide visual assistance for remote control. The navigation and obstacle avoidance unit is used to realize the autonomous path planning and motion obstacle avoidance during the traveling of the mobile large-flow outdoor aerosol generation system.

[0009] Further, the wireless communication device includes a communication antenna and an RTK antenna.

[0010] Further, the aerosol generation unit includes an armored outer shell, a DC high-pressure pump, a liquid storage tank, a pan-tilt, and an aerosol generation device. Among them, the DC high-pressure pump is installed on the vehicle body, used to form a high-pressure liquid flow and transport it to the aerosol generation device. The liquid storage tank is installed inside the middle compartment of the vehicle body, used to provide aerosol generation liquid to the DC high-pressure pump through a liquid filling pipe. The armored outer shell is installed on the vehicle body and covers the DC high-pressure pump, the liquid filling pipe, and the liquid storage tank to provide a protection function. The pan-tilt is installed on the vehicle body, and there is a mounting plate on the top of the pan-tilt. The aerosol generation device is fixed on the mounting plate. The pan-tilt is controlled by the main control unit in the crawler mobile chassis for pitching and left-right rotation, so as to control the direction of the aerosol cloud group transported by the aerosol generation device.

[0011] Furthermore, the liquid storage tank includes an outer liquid storage tank, an inner liquid storage tank, and a liquid outlet pipe of the liquid storage tank. Among them, the inner liquid storage tank is embedded inside the outer liquid storage tank. The top of the inner liquid storage tank is connected to the liquid injection port opened on the armored housing through a liquid addition pipe for externally adding aerosol generating liquid. The bottom of the inner liquid storage tank is sequentially connected to a DC high-pressure pump through the liquid outlet pipe of the liquid storage tank and the water inlet pipe of the high-pressure pump, for supplying aerosol generating liquid to the DC high-pressure pump, and after forming a high-pressure liquid flow in the DC high-pressure pump 5, it is then transported to the aerosol generating device through the water outlet pipe of the high-pressure pump.

[0012] Furthermore, the materials of the liquid addition pipe, the water inlet pipe of the high-pressure pump, the water outlet pipe of the high-pressure pump, the inner liquid storage tank, and the liquid outlet pipe of the liquid storage tank are all stainless steel.

[0013] Furthermore, the aerosol generating device includes a diversion air duct, a high-voltage electrostatic generator, an electromagnetic shunt device, an aerosol generating device housing, a first fan duct combination, a second fan duct combination, a first fan duct bracket, a second fan duct bracket, and a swirl atomization device. Among them, the water outlet pipe of the high-pressure pump passes through a protective hose and is connected to the electromagnetic shunt device. The electromagnetic shunt device shunts the high-pressure liquid flow transported by the water outlet pipe of the high-pressure pump, and respectively transports it to the high-pressure atomizing nozzles in multiple swirl atomization devices through multiple hoses on the left and right sides of the electromagnetic shunt device. The liquid flow is ejected from the high-pressure atomizing nozzles to form a conical jet, and the conical jet collides with air through friction to form a preliminary atomized cloud mass. The electromagnetic shunt device is provided with two solenoid valves, and the atomization start and stop control of the shunt pipelines on the left and right sides is realized by controlling the opening and closing of the solenoid valves. The first fan duct combination and the second fan duct combination are respectively installed on the left and right sides inside the aerosol generating device housing through the first fan duct bracket and the second fan duct bracket. The first fan duct combination and the second fan duct combination are respectively connected to multiple swirl atomization devices on the left and right sides through multiple diversion air ducts. High-speed axial fans are installed in the first fan duct combination and the second fan duct combination, which can generate high-speed airflows and transport them to the swirl atomization devices through the diversion air ducts, and finally form spiral airflows to perform secondary atomization and transportation on the preliminary atomized cloud mass ejected from the high-pressure atomizing nozzles. The swirl atomization device is a double-layer air path structure. The inner air path outputs a high-speed spiral airflow outward through a spiral guide fan blade. When the high-speed spiral airflow is ejected from the outlet of the inner air path, the outer air path continuously supplements air to the jet outlet based on the siphon effect to increase the air volume at the air outlet and enhance the secondary atomization effect.

[0014] Furthermore, the maximum liquid consumption of the aerosol generating device is 5 L / min, the maximum air flow of the aerosol is 22000 L / min, the generated aerosol concentration is greater than 5×10 7 pieces / L, the static wind injection aerosol distance is 15 m, and it can continuously output aerosol for 10 min under the maximum air flow condition.

[0015] Further, the auxiliary unit includes a micro weather station and a lifting panoramic camera installed on the vehicle body.

[0016] Further, the micro weather station includes a temperature and humidity sensor, a wind speed and direction sensor, an atmospheric pressure detection sensor, a PM2.5 sensor, a PM10 sensor, and an optical rainfall sensor, which are used to monitor the air temperature and humidity, wind speed and direction, atmospheric pressure, PM2.5, PM10, and optical rainfall of the surrounding environment of the system in real time.

[0017] (III) Beneficial Effects

[0018] The present invention provides a mobile large-flow outdoor aerosol generation system, including a crawler mobile chassis, an aerosol generation unit, and an auxiliary unit, which can generate chemical and biological aerosols in the field / outdoor environment, and can independently set paths and navigation, configure aerosol clouds with specific areas and concentration distributions, solve the problems that existing commercially available aerosol generation devices have low generation efficiency and small aerosol supply, cannot generate a large amount of aerosols in the field, and the aerosol clouds sprayed by some non-specialized atomization equipment are unstable and not persistent, form stable and persistent aerosol clouds, and provide support for the point detection and remote telemetry performance evaluation tests of biological and chemical monitoring and alarm devices, as well as the outdoor on-site performance evaluation tests of personal or collective protection equipment and enrichment sampling equipment that require large-flow aerosols. <{

[0019] The beneficial effects of the present invention are as follows: The use of a crawler mobile chassis can adapt to various sites such as gravel, grassland, ruins, and mud, is not easy to slip, has good traction performance, is conducive to exerting a large traction force, has good passability, has low requirements for the movement space, and can adapt to working conditions such as the field, narrow spaces, and tunnels, enabling the mobile large-flow outdoor aerosol generation system to perform autonomous path planning and biological aerosol environment configuration in various different outdoor environments; the anti-drip function of the swirl atomization device can prevent liquid dripping during the generation and suspension of biological aerosols, reducing the corrosion of the vehicle body; the mobile large-flow outdoor aerosol generation system transmits the data of sensing devices such as lidar data and RTK longitude and latitude data to the industrial control computer for processing, has the capabilities of real-time status monitoring, surrounding environment parameter monitoring, and image and video monitoring, and has the functions of autonomous navigation and active obstacle avoidance. Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the overall mobile large-flow outdoor aerosol generation system of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure of the crawler mobile chassis in the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the liquid storage tank in the present invention;

[0023] Figure 4 This is a schematic structural diagram of the aerosol generating device in the present invention.

[0024] In the figure: 1, crawler mobile chassis; 2, micro weather station; 3, armored outer shell; 4, lifting panoramic camera; 5, DC high-pressure pump; 6, liquid filling pipe; 7, high-pressure pump water inlet pipe; 8, liquid storage tank; 9, high-pressure pump water outlet pipe; 10, protective hose; 11, heavy-duty pan-tilt; 12, aerosol generating device; 13, diversion air duct; 14, high-voltage electrostatic generator; 15, electromagnetic shunt device; 16, aerosol generating device outer shell; 17-1, first fan duct combination; 17-2, second fan duct combination; 18-1, first fan duct support; 18-2, second fan duct support; 19, swirl atomization device; 20, outer box of liquid storage tank; 21, inner box of liquid storage tank; 22, liquid storage tank water outlet pipe; 23, walking unit; 24, driving power unit; 25, vehicle body; 26, wireless communication device; 27, main control unit; 28, lithium battery pack; 29, driving camera; 30, navigation and obstacle avoidance unit. Specific embodiments

[0025] To make the objectives, contents, and advantages of the present invention clearer, the following further describes in detail the specific embodiments of the present invention in conjunction with the accompanying drawings and embodiments.

[0026] This embodiment provides a mobile large-flow outdoor aerosol generating system for constructing a large-scale chemical and biological aerosol cloud in the field / outdoor environment. Its overall structure is as Figure 1 shown, including a crawler mobile chassis 1, an aerosol generating unit, and an auxiliary unit.

[0027] As Figure 2 shown, the crawler mobile chassis 1 includes a walking unit 23, a driving power unit 24, a vehicle body 25, a wireless communication device 26, a main control unit 27, a lithium battery pack 28, a driving camera 29, and a navigation and obstacle avoidance unit 30.

[0028] The vehicle body 25 adopts an integral all-aluminum alloy structure, which is processed by bending and welding, and has the functions of overall dust and water protection.

[0029] The traveling unit 23 is a crawler-type traveling chassis, which consists of a tension wheel assembly, a carrier wheel assembly, a drive wheel assembly, a trailing wheel assembly and a crawler. Among them, the tension wheel assembly is installed at the front ends of the left and right sides of the vehicle body 25, which can adapt to the change of the crawler length, ensure that the crawler has a moderate tightness, adapt to different terrains and loads, and ensure the stable operation of the mobile large-flow outdoor aerosol generator system; the carrier wheel assembly belongs to a flexible suspension and is symmetrically installed at the lower parts of the left and right sides of the vehicle body 25, with three on each side, which can absorb the vibrations generated by different road conditions, ensure the stable operation of the equipment carried on the vehicle body 25, and at the same time can reduce the frictional loss between the crawler and the ground; the drive wheel assembly is connected to the drive power unit 24 located inside the vehicle body 25 and is used to drive the crawler to move; the trailing wheel assembly is installed at the upper parts of the left and right sides of the vehicle body 25, with three on each side, which is used to support the crawler to prevent the crawler from sagging or swinging, reduce the running vibration and energy loss, and avoid collisions and frictions between the crawler and other components of the crawler-type mobile chassis 1. The crawler is used for ground support, has crawler teeth, and is looped around the tension wheel assembly, the carrier wheel assembly, the drive wheel assembly and the trailing wheel assembly. The ground contact pressure of the crawler is small, and it is not easy to sink when walking on non-rigid roads. It is suitable for operating in soft, sandy, grassland, ruins, muddy and other sites. It is not easy to slip, has good traction performance, can adapt to all terrains and has excellent passing performance. The crawler is a pinned type, and each crawler is composed of multiple single-section crawlers cross-pinned to each other. When a certain single-section crawler of a certain crawler is damaged, only the damaged single-section crawler needs to be replaced to make the whole crawler continue to work, rather than replacing the whole crawler, thus greatly reducing the later maintenance and use costs. The speed of the crawler-type mobile chassis 1 reaches 10 km / h.

[0030] The drive power unit 24 is installed inside the vehicle body 25. A DC motor is selected as the power source, and mechanical double-flow transmission is adopted. The power is transmitted to the double-flow gearbox through a coupling and a chain. The output shafts on both sides of the double-flow gearbox are connected to the drive wheel assemblies located on both sides of the vehicle body 25 to complete the power transmission, and it has a parking function.

[0031] The wireless communication device 26 is installed at the upper right rear of the vehicle body 25 and includes a communication antenna and an RTK antenna. Among them, the RTK antenna cooperates with the mobile station and the reference station, and uses Beidou differential positioning, and the positioning accuracy can reach the centimeter level. The wireless communication device 26 can achieve a communication distance of not less than 1 km using the communication antenna, and the communication distance can be increased to 5 km by replacing it with an enhanced communication antenna.

[0032] The main control unit 27 includes an industrial computer, a driver, a memory, and a wireless remote controller. Among them, the industrial computer, the driver, and the memory are installed at the top center of the vehicle body 25 and covered by the armored outer casing 3; the industrial computer is connected to the traveling unit 23, the driving power unit 24, the driving camera 29, the aerosol generating unit, the navigation and obstacle avoidance unit 30, the auxiliary unit, and the wireless communication device 26 through a network cable in a network port communication manner, and communicates with the wireless remote controller through the wireless communication device 26; after receiving the action instructions from the wireless remote controller through the wireless communication device 26, the main control unit 27 decomposes and issues them to the traveling unit 23, the driving power unit 24, the aerosol generating unit, the navigation and obstacle avoidance unit 30, and the auxiliary unit, controlling the traveling unit 23, the driving power unit 24, the aerosol generating unit, the navigation and obstacle avoidance unit 30, and the auxiliary unit to respectively complete the forward and backward movement and steering of the tracked mobile chassis 1, the left and right rotation and pitching of the heavy-duty pan-tilt 11, the start and stop of the DC high-pressure pump 5, the start and stop of the aerosol generating device 12, the lifting of the lifting panoramic camera 4, etc.; the main control unit 27 simultaneously collects the images and climate data transmitted back by the driving camera 29, the micro weather station 2, and the lifting panoramic camera 4, and feeds them back to the wireless remote controller for the operator to monitor and analyze.

[0033] There are a total of four driving cameras 29, which are distributed in the front, back, left, and right of the vehicle body 25 and are used to provide visual assistance for remote control.

[0034] The navigation and obstacle avoidance unit 30 is mainly composed of a lidar, an industrial computer, and an RTK Beidou differential receiver, and has functions such as rapid map generation, autonomous path planning, and motion obstacle avoidance.

[0035] The lithium battery pack 28 is a lithium iron phosphate battery pack with a high energy ratio, a rated voltage of 72V, and a battery capacity of 7.2KWh, and is used to supply power to various electrical appliances in the mobile large-flow outdoor aerosol generation system.

[0036] The aerosol generating unit includes an armored outer casing 3, a DC high-pressure pump 5, a liquid filling pipe 6, a liquid storage tank 8, a heavy-duty pan-tilt 11, and an aerosol generating device 12.

[0037] The DC high-pressure pump 5 is installed at the rear center position on the top of the vehicle body 25 and is used to form a high-pressure liquid flow and transport it to the aerosol generating device 12.

[0038] The liquid storage tank 8 is installed inside the middle compartment of the vehicle body 25 and is used to supply aerosol generating liquid to the DC high-pressure pump 5.

[0039] The armored outer casing 3 is installed at the rear side of the top of the vehicle body 25 and covers the DC high-pressure pump 5, the liquid filling pipe 6, and the liquid storage tank 8 to prevent collision with external sand, rain, and other foreign objects.

[0040] The heavy-duty pan-tilt 11 is installed at the central position on the front side of the top of the vehicle body 25 and is located at the front end of the armored outer casing 3. An installation disc is provided on the top of the heavy-duty pan-tilt 11, and the aerosol generating device 12 is fixed on the installation disc. The heavy-duty pan-tilt 11 is controlled by the main control unit 27 for pitching and left-right rotation, so as to control the direction of the aerosol cloud mass transported by the aerosol generating device 12.

[0041] As Figure 3 shown, the liquid storage tank 8 includes an outer liquid storage tank 20, an inner liquid storage tank 21 and a liquid outlet pipe 22 of the liquid storage tank. Among them, the inner liquid storage tank 21 is embedded inside the outer liquid storage tank 20. The top of the inner liquid storage tank 21 is connected to the liquid injection port opened on the right side inside the armored outer casing 3 through a liquid filling pipe 6 for externally filling the aerosol generating liquid. The bottom of the inner liquid storage tank 21 is sequentially connected to the DC high-pressure pump 5 through the liquid outlet pipe 22 of the liquid storage tank and the high-pressure pump inlet pipe 7, for supplying the aerosol generating liquid to the DC high-pressure pump 5, and after forming a high-pressure liquid flow in the DC high-pressure pump 5, it is then transported to the aerosol generating device 12 through the high-pressure pump outlet pipe 9.

[0042] The main materials of the liquid filling pipe 6, the high-pressure pump inlet pipe 7, the high-pressure pump outlet pipe 9, the inner liquid storage tank 21 and the liquid outlet pipe 22 of the liquid storage tank are all stainless steel, which has the advantages of acid and alkali corrosion resistance, high temperature resistance and anti-aging. The volume of the inner liquid storage tank 21 is 50L.

[0043] As Figure 4 shown, the aerosol generating device 12 includes a diversion air duct 13, a high-voltage electrostatic generator 14, an electromagnetic shunt device 15, an outer casing 16 of the aerosol generating device, a first fan duct combination 17-1, a second fan duct combination 17-2, a first fan duct bracket 18-1, a second fan duct bracket 18-2 and a swirl atomization device 19.

[0044] The high-pressure pump outlet pipe 9 passes through the protective hose 10 and is connected to the electromagnetic shunt device 15. The electromagnetic shunt device 15 shunts the high-pressure liquid flow transported by the high-pressure pump outlet pipe 9, and respectively transports it to the high-pressure atomizing nozzles in the eight swirl atomization devices 19 through four hoses on each of the left and right sides of the electromagnetic shunt device 15. The liquid flow is ejected from the high-pressure atomizing nozzles to form a conical jet, and the conical jet collides with the air by friction to form a preliminary atomized cloud mass.

[0045] The electromagnetic shunt device 15 is provided with two solenoid valves, and the atomization start and stop control of the shunt pipelines on the left and right sides is realized by controlling the opening and closing of the solenoid valves.

[0046] The first fan duct assembly 17-1 and the second fan duct assembly 17-2 are respectively installed on the left and right sides inside the outer shell 16 of the aerosol generating device through the first fan duct bracket 18-1 and the second fan duct bracket 18-2. The first fan duct assembly 17-1 and the second fan duct assembly 17-2 are respectively connected to four swirl atomizing devices 19 on each of the left and right sides through four diversion air ducts 13; a high-speed axial flow fan is installed in the first fan duct assembly 17-1 and the second fan duct assembly 17-2, which can generate high-speed air flow and transport it to the swirl atomizing device 19 through the diversion air duct 13, and finally form a spiral air flow to perform secondary atomization and transportation on the preliminary atomized cloud mass ejected by the high-pressure atomizing nozzle.

[0047] The swirl atomizing device 19 has a double-layer air path structure. The inner air path outputs high-speed spiral air flow outward through spiral guide vanes. When the high-speed spiral air flow is ejected from the outlet of the inner air path, the outer air path continuously supplements air flow to the jet outlet based on the siphon effect to increase the air volume at the air outlet and enhance the secondary atomization effect. A total of eight swirl atomizing devices 19 are provided in this system, which are installed in two rows in parallel on the front panel of the outer shell 16 of the aerosol generating device. Any adjacent upper and lower two swirl atomizing devices 19 have an included angle of 10°, which is used to prevent the aerosol conveying air flows from interfering with each other, and all eight swirl atomizing devices 19 can be opened simultaneously or only four on one side can be opened as needed. The swirl atomizing device 19 has an electrostatic elimination function to prevent aerosol adhesion and aggregation.

[0048] The liquid consumption of the aerosol generating device 12 is adjustable. The maximum liquid consumption is 5 L / min, the maximum air flow of the aerosol is 22,000 L / min, and the generated aerosol concentration is greater than 5×10 7 pieces / L, the static wind jet aerosol distance is 15 m, and the aerosol can be continuously output for 10 min under the maximum air flow condition.

[0049] The auxiliary unit includes a micro meteorological station 2 and a lifting panoramic camera 4. Among them, the micro meteorological station 2 is installed on the top right rear side of the vehicle body 25, and the lifting panoramic camera 4 is installed on the top due rear side of the vehicle body 25. The micro meteorological station 2 includes a temperature and humidity sensor, a wind speed and direction sensor, a barometric pressure detection sensor, a PM2.5 sensor, a PM10 sensor and an optical rain sensor, which are used to monitor parameters such as air temperature and humidity, wind speed and direction, atmospheric pressure, PM2.5, PM10 and optical rainfall in the surrounding environment of the system in real time. The lifting panoramic camera 4 is used to quickly capture image information, record video information during traveling or operation in real time, and can quickly transmit the video image information back to the main control unit 27. The lifting panoramic camera 4 has 5x optical zoom, AI intelligent tracking, and IP67 waterproof and dustproof functions. It comes with a spherical two-way pan-tilt head, supports remote angle adjustment, can filter out the influence of system jitter during traveling or operation on image acquisition, and can be remotely controlled to rise 1 m to improve the camera's field of view and panoramically monitor the surrounding situation.

[0050] Example 1

[0051] Using the mobile large-flow outdoor aerosol generation system of the present invention, the method for constructing a bioaerosol environment in the field / outdoor environment is as follows:

[0052] Open the cover plate of the liquid injection port on the armored outer casing 3, and fill 50 L of riboflavin solution with a concentration of 1 g / L into the liquid storage tank 8 through the liquid addition pipe 6. This riboflavin solution is used as the aerosol generation liquid to simulate the generation of bacterial aerosols. After the mobile large-flow outdoor aerosol generation system and the wireless remote control are powered on, start the industrial control computer. The wireless remote control uses map generation and path generation software to intercept satellite images of the operation area, calibrate the pixels and satellite coordinates of the predetermined operation area, construct the operation area boundary, and divide the passable area. By automatically or manually generating a sequence of path points on the calibrated map, it can be an end-to-end open path or a loop closed path. The default remote control working mode is to run and load the file, and load each functional node in sequence. Download the map and the preset navigation path file to the navigator module through the map generation and path generation software.

[0053] Turn on the four swirl atomization devices 19 of the aerosol generation device 12. The aerosol containing riboflavin is ejected from the high-pressure atomizing nozzle to form an aerosol cloud mass with a length of about 10 m. Set the angle of the heavy-duty pan-tilt 11 through the wireless remote control to raise its elevation angle to about 30°, and the aerosol generation device 12 sprays the aerosol upward at this angle. Remote control and synchronize the navigation path file of the navigator module, select one of the paths, notify the navigator to execute the selected path navigation, switch the remote control to the autonomous mode, and the mobile large-flow outdoor aerosol generation system starts to run. Operate the wireless remote control to set a predetermined travel route, start the autonomous navigation mode, and the mobile large-flow outdoor aerosol generation system will walk along the predetermined travel route to form a stable and controllable bioaerosol cloud mass with dispersed generation and controllable boundaries. The system trajectory information, coordinate position, and actual walking trajectory can be viewed on the wireless remote control and displayed in real time on the map. During the autonomous operation of the mobile large-flow outdoor aerosol generation system, the navigation path can be reset through the wireless remote control, forced to stop, the vehicle position can be adjusted manually, and the maximum speed can be set dynamically.

[0054] Wait for the unmanned vehicle-mounted bioaerosol alarm to be transported to the test outdoor field. After the alarm is powered on, start the unattended patrol and detection mode. The unmanned vehicle-mounted bioaerosol alarm conducts patrol and detection in the test site. When it travels to the surrounding of the bioaerosol cloud mass generated by the mobile large-flow outdoor aerosol generation system, the air pump of the bioaerosol alarm extracts the aerosol from the surrounding of the cloud mass into the alarm, where it is irradiated by the laser in the alarm to generate bioluminescence and is detected. After counting and spectral analysis, an alarm signal is issued and the relevant data is transmitted to the mobile processing terminal by the wireless transmission module.

[0055] The bioaerosol telemetry alarm to be evaluated is transported to a location 1 km away from the test field, and there is an open area between the alarm and the mobile large-flow outdoor aerosol generation system. Turn on the bioaerosol telemetry alarm, and direct the optical window towards the aerosol cloud. At this time, the alarm turns on the automatic scanning mode and scans the bioaerosols within the field of view in both the horizontal and vertical dimensions. The ultraviolet laser irradiates the bioaerosol cloud to generate bioluminescence, and the cloud is detected and its boundary is scanned by detecting the fluorescence and echo signals.

[0056] Example 2

[0057] The method for constructing a chemical aerosol environment in the field / outdoor environment by using the mobile large-flow outdoor aerosol generation system of the present invention is as follows:

[0058] Open the cover plate of the liquid injection port on the armored outer casing 3, and pour 50 L of ethanol containing 10% p-xylene into the liquid storage tank 8 through the liquid addition pipe 6. Use this p-xylene solution as the aerosol generation liquid to simulate the generation of a chemical aerosol cloud. After the mobile large-flow outdoor aerosol generation system and the wireless remote controller are powered on, start the industrial control computer. The wireless remote controller uses the map generation and path generation software to intercept the satellite image of the operation area and calibrate the pixels and satellite coordinates of the predetermined operation area, construct the boundary of the operation area, and divide the passable area. By automatically or manually generating a sequence of path points on the calibrated map, it can be an end-to-end open path or a loop closed path. Default to the remote control working mode, run and load the file, and load each functional node in sequence. Download the map and the preset navigation path file to the navigator module through the map generation and path generation software.

[0059] The eight swirl atomizing devices 19 of the aerosol generating device 12 are turned on, and an aerosol containing paraxylene is sprayed out from the high-pressure atomizing nozzle to form an aerosol cloud with a length of about 10m, which is used to simulate a chemical plant leak. The angle of the heavy-duty pan-tilt head 11 is set by the wireless remote control so that its elevation angle is raised to about 60°, and the aerosol generating device 12 sprays aerosol upward at this angle. The navigation path file of the remote control synchronizes the navigator module, selects one of the paths, notifies the navigator to execute the selected path navigation, and the remote control switches to autonomous mode, and the mobile high-flow field aerosol generating system starts to operate. Operate the wireless remote control, set a predetermined route, and start the autonomous navigation mode. The mobile high-flow field aerosol generating system will move along the predetermined route to form a stable, dispersed, and boundary-controllable chemical aerosol cloud. The system trajectory information, coordinate position, and actual walking trajectory can be viewed on the wireless remote control and displayed in real time on the map. During the autonomous operation of the mobile large-flow outdoor aerosol generation system, the navigation path can be reset, forced to stop, the vehicle position can be manually adjusted, and the maximum speed can be dynamically set through the wireless remote control.

[0060] The drone-mounted chemical toxicity alarm to be evaluated was placed in an open area 1 km from the test site. After being powered on, the drone took off and a patrol route was designed. The alarm was planned to fly to a cloud and perform gas detection, simulating a drone-mounted chemical toxicity alarm detecting exhaust gas composition at a factory exhaust chimney. After running the planning program, the drone flew toward the cloud, and the ion mobility spectrometry-based chemical toxicity alarm on board began sampling and analyzing the chemical aerosol cloud. Upon an alarm, the onboard sampling equipment activated, using a sampling and enrichment tube to extract the gas cloud to be tested. The test results, including the type and concentration, were then transmitted to a mobile processing terminal via a wireless transmission module. After the test was completed, the drone returned to its launch point, removed the sampling and enrichment tube, and transferred the sample to a gas chromatograph-mass spectrometer for analysis.

[0061] The remote telemetry detection device for the chemical gas to be evaluated is transported to an open area 1 km from the test site, with an open area between it and the mobile, high-flow field aerosol generation system. The telemetry detection device is turned on, and the optical window is oriented toward the aerosol cloud. The alarm then enters automatic scanning mode, scanning the aerosols within its field of view in both the horizontal and vertical dimensions. By detecting the infrared signal of the aerosol cloud and comparing it with spectra in a database, the type and approximate concentration of the aerosol cloud are calculated and analyzed, and the cloud boundary information is obtained.

[0062] The wireless remote control's rapid map generation and global path planning module can quickly create a global map of the operating area for the mobile, high-flow, outdoor aerosol generating system of the present invention, and randomly set multiple operating routes for the robot to flexibly use. The specific implementation steps are as follows:

[0063] (1) Satellite / Aerial Image Interception: Take a screenshot of the operation area of the mobile large-flow outdoor aerosol generator system on Baidu / Google Maps or aerial photos;

[0064] (2) Map Coordinate Mapping: Establish a mapping relationship between the pixels of the intercepted image and the real Beidou positioning coordinates.

[0065] (3) Guide Path Angle Setting: This parameter is used as a constraint condition for automatic generation of the guide path, and is used to control the change amount of the heading angle of the mobile large-flow outdoor aerosol generator system.

[0066] (4) No-Go Area Setting: This parameter is used as a constraint condition for generating the guide path. The guide path shall not pass through no-go areas (obstacles, buildings, restricted areas, boundaries, etc.).

[0067] (5) Guide Path Generation: Manual calibration of guide points can be carried out, and the connection relationship between the guide points can be established; a random path between two points A and B can be automatically generated.

[0068] The mobile large-flow outdoor aerosol generator system provided by the present invention has good passability and good traction performance, can adapt to various outdoor / field scenarios such as gravel, grassland, ruins, mud, etc., has autonomous navigation and active obstacle avoidance functions, can perform autonomous path planning and biological aerosol environment construction, and can provide a persistent and stable large-range aerosol cloud, providing support for the field performance evaluation of biological and chemical monitoring and alarm equipment, biological reconnaissance equipment, as well as personal or collective protection equipment and enrichment sampling equipment.

[0069] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and deformations can still be made, and these improvements and deformations should also be regarded as the protection scope of the present invention.

Claims

1. A mobile large-flow outdoor aerosol generation system, characterized in that The mobile large-flow outdoor aerosol generation system includes a crawler mobile chassis, an aerosol generation unit, and an auxiliary unit. Among them, the crawler mobile chassis is used to realize the traveling and communication functions of the mobile large-flow outdoor aerosol generation system, and control the aerosol generation unit and the auxiliary unit. The aerosol generation unit and the auxiliary unit are both installed on the crawler mobile chassis. The aerosol generation unit is used to generate a large flow of aerosol, and the auxiliary unit is used to conduct environmental monitoring and record video image information during traveling or operation.

2. The mobile large-flow outdoor aerosol generation system according to claim 1, characterized in that, The crawler mobile chassis includes a traveling unit, a driving power unit, a vehicle body, a wireless communication device, a main control unit, a battery pack, a driving camera, and a navigation and obstacle avoidance unit. Among them, the traveling unit is a crawler traveling chassis installed outside the vehicle body, used to realize the traveling of the mobile large-flow outdoor aerosol generation system. The driving power unit is installed inside the vehicle body, used to provide power output for the traveling unit. The wireless communication device is installed on the vehicle body, used to realize external communication functions. The main control unit is used to receive external control instructions, control other functional units, and feedback the data of each functional unit to the outside. The battery pack is used to supply power to various electrical appliances in the mobile large-flow outdoor aerosol generation system. The driving camera is used to provide visual assistance for remote control. The navigation and obstacle avoidance unit is used to realize autonomous path planning and motion obstacle avoidance during the traveling of the mobile large-flow outdoor aerosol generation system.

3. The mobile large-flow outdoor aerosol generation system according to claim 2, characterized in that, The wireless communication device includes a communication antenna and an RTK antenna.

4. The mobile large-flow outdoor aerosol generation system according to claim 1, wherein The aerosol generation unit includes an armored outer casing, a DC high-pressure pump, a liquid storage tank, a pan-tilt, and an aerosol generation device. Among them, the DC high-pressure pump is installed on the vehicle body, used to form a high-pressure liquid flow and transport it to the aerosol generation device. The liquid storage tank is installed inside the middle compartment of the vehicle body, used to supply aerosol generation liquid to the DC high-pressure pump through a liquid filling pipe. The armored outer casing is installed on the vehicle body and covers the DC high-pressure pump, the liquid filling pipe, and the liquid storage tank, providing a protection function. The pan-tilt is installed on the vehicle body, and there is a mounting plate on the top of the pan-tilt. The aerosol generation device is fixed on the mounting plate. The pan-tilt is controlled by the main control unit in the crawler mobile chassis for pitching and left-right rotation, so as to control the direction of the aerosol cloud group transported by the aerosol generation device.

5. The mobile large-flow outdoor aerosol generation system according to claim 4, characterized in that, The liquid storage tank includes an outer liquid storage tank, an inner liquid storage tank, and a liquid storage tank outlet pipe. Among them, the inner liquid storage tank is embedded inside the outer liquid storage tank. The top of the inner liquid storage tank is connected to the liquid filling port opened on the armored outer casing through a liquid filling pipe, used for external filling of aerosol generation liquid. The bottom of the inner liquid storage tank is connected to the DC high-pressure pump through the liquid storage tank outlet pipe and the high-pressure pump inlet pipe in sequence, used to supply aerosol generation liquid to the DC high-pressure pump, and after forming a high-pressure liquid flow in the DC high-pressure pump 5, it is then transported to the aerosol generation device through the high-pressure pump outlet pipe.

6. The mobile large-flow outdoor aerosol generation system according to claim 5, characterized in that The liquid filling pipe, the high-pressure pump inlet pipe, the high-pressure pump outlet pipe, the inner liquid storage tank, and the liquid storage tank outlet pipe are all made of stainless steel.

7. The mobile large-flow outdoor aerosol generation system according to claim 1, characterized in that The aerosol generating device includes a diversion air duct, a high-voltage electrostatic generator, an electromagnetic shunt device, an outer shell of the aerosol generating device, a first fan duct assembly, a second fan duct assembly, a first fan duct bracket, a second fan duct bracket, and a swirl atomization device; wherein, the high-pressure pump outlet pipe passes through a protective hose and is connected to the electromagnetic shunt device. The electromagnetic shunt device shunts the high-pressure liquid flow conveyed by the high-pressure pump outlet pipe, and respectively conveys it to the high-pressure atomizing nozzles in multiple swirl atomization devices through multiple hoses on the left and right sides of the electromagnetic shunt device. The liquid flow is ejected from the high-pressure atomizing nozzles to form a conical jet, and the conical jet frictions and collides with the air to form a preliminary atomized cloud mass; the electromagnetic shunt device is provided with two solenoid valves, and the atomization start and stop control of the shunt pipelines on the left and right sides is realized by controlling the opening and closing of the solenoid valves; the first fan duct assembly and the second fan duct assembly are respectively installed on the left and right sides inside the outer shell of the aerosol generating device through the first fan duct bracket and the second fan duct bracket; the first fan duct assembly and the second fan duct assembly are respectively connected to multiple swirl atomization devices on the left and right sides through multiple diversion air ducts; high-speed axial fans are installed in the first fan duct assembly and the second fan duct assembly, which can generate high-speed air flow and convey it to the swirl atomization device through the diversion air duct, and finally form a spiral air flow to perform secondary atomization and transportation on the preliminary atomized cloud mass ejected from the high-pressure atomizing nozzle; the swirl atomization device is a double-layer air path structure, and the inner air path outputs a high-speed spiral air flow outward through a spiral guide fan blade. When the high-speed spiral air flow is ejected from the outlet of the inner air path, the outer air path continuously supplements air flow to the jet outlet based on the siphon effect to increase the air volume at the air outlet and enhance the secondary atomization effect.

8. The mobile large-flow outdoor aerosol generation system according to claim 1, wherein The maximum liquid consumption of the aerosol generating device is 5 L / min, the maximum air flow rate of the aerosol is 22000 L / min, the concentration of the generated aerosol is greater than 5×10 7 pieces / L, the static wind injection aerosol distance is 15 m, and the aerosol can be continuously output for 10 min under the maximum air flow condition.

9. The mobile large-flow outdoor aerosol generation system according to claim 1, wherein The auxiliary unit includes a micro weather station and a lifting panoramic camera installed on the vehicle body.

10. The mobile large-flow outdoor aerosol generation system according to claim 9, characterized in that, The micro weather station includes a temperature and humidity sensor, an anemometer and wind vane, a barometric pressure detection sensor, a PM2.5 sensor, a PM10 sensor, and an optical rain sensor, and is used to monitor the air temperature and humidity, wind speed and direction, atmospheric pressure, PM2.5, PM10, and optical rainfall of the surrounding environment of the system in real time.

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