Unmanned operation method with dust falling and fire extinguishing functions

Abstract

The invention discloses an unmanned operation method with dust falling and fire extinguishing functions, which is characterized by comprising the following steps: S1, generating water mist with the particle size of about 10 microns through an ultrasonic water mist device carried on an unmanned vehicle platform, and directionally covering a dust raising area to realize PM2.5-level particulate matter sedimentation; s2, a large-flow water column is emitted to a fire source through a fire water monitor integrated on the same unmanned vehicle platform, and the spraying angle is adjusted in real time through a long-distance remote control system; the technology is realized as follows: an ultrasonic water mist device (the particle size of water mist is about 10 microns) and a fire water monitor share a water supply system, and flow dynamic distribution is realized through a shunt electromagnetic valve; according to the technology, 5G remote control and AI autonomous path planning are adopted, and personnel do not need to enter a dangerous area; the technology is realized as follows: three-stage filtration (200 meshes to 500 meshes to 10 [mu] m ceramic filter elements) guarantees water quality, and a booster pump and a surge tank reduce energy consumption; the technology is realized as follows: the Mesh ad hoc network realizes multi-vehicle dynamic task allocation.

Description

Technical Field

[0001] This invention relates to the field of intelligent environmental protection and fire-fighting equipment technology, and in particular to an unmanned operation method that combines dust suppression and fire extinguishing functions. Background Technology

[0002] Fire scenes are often accompanied by large amounts of inhalable fine particulate matter such as PM2.5, which poses a serious threat to human health and the environment. Therefore, dust suppression is necessary when the concentration of particulate matter is high. In existing technologies, dust suppression and fire extinguishing operations generally use separate equipment, which has the following main technical drawbacks: 1. Insufficient atomization efficiency: Traditional dust suppression devices mostly use pressure nozzles (such as spiral nozzles and fan nozzles), and the generated water mist particles are mostly in the range of 80-300μm. The capture efficiency of fine particulate matter such as PM2.5 is insufficient (usually <50%). According to the mechanism of spray dust suppression, the removal efficiency of particulate matter is the highest when the water mist particle size is similar to that of particulate matter (Zheng Weiwei. Research on micron-level ultrasonic atomization dry fog dust suppression device [J]. Shanxi Chemical Industry, 2021). The ultrasonic water mist spray diameter is about 10 microns, which can effectively reduce the concentration of PM2.5 and protect the health of personnel and the environment.

[0003] 2. Human-computer interaction risks: Existing fire monitors require operators to manually adjust the spray angle within 30 meters of the fire scene (the safe distance specified in GB4351.1-2005), which can easily cause casualties in scenarios such as chemical explosions and tunnel collapses.

[0004] 3. Lack of functional synergy: In conventional equipment, dust suppression and fire extinguishing systems are two separate systems that operate independently, resulting in an inefficient combination of dust suppression and fire extinguishing.

[0005] 4. Severe response delay: The traditional manual inspection + manual start-up mode takes a long time on average from the discovery of the danger to the equipment being in place. Summary of the Invention

[0006] In order to overcome the shortcomings of the existing technology, one of the objectives of this invention is to provide an unmanned operation method that combines dust suppression and fire extinguishing functions.

[0007] One of the objectives of this invention is achieved through the following technical solution: an unmanned operation method that combines dust suppression and fire extinguishing functions, characterized by comprising the following steps: S1: The ultrasonic water mist generator mounted on the unmanned vehicle platform generates water mist with a particle size of about 10 micrometers, which is used to cover areas with high concentration of particulate matter in a targeted manner to achieve the settling of PM2.5 level particulate matter. S2: Fires a large jet of water at the fire source using a fire monitor integrated on the same unmanned vehicle platform, with the spray angle adjusted in real time via a remote control system. S3: The central controller dynamically switches or synchronously executes the dust suppression mode and the fire extinguishing mode based on environmental parameters, including dust concentration, gas composition, etc. S4: The ultrasonic water mist generator and the fire monitor share the same water supply system, and the water flow distribution ratio is controlled by a branch solenoid valve.

[0008] Furthermore, the unmanned vehicle platform adopts a tracked all-terrain chassis, and the ultrasonic water mist generator and fire monitor are respectively installed at the front and rear of the vehicle body, and the horizontal rotation angle of the fire monitor is ≥270°, and the pitch angle adjustment range is -15° to +75°.

[0009] Furthermore, the remote control system includes an environmental monitoring module that integrates a PM2.5 sensor and a gas composition analyzer. The monitoring data is transmitted back to the control terminal via a 5G network, and an automatic path planning algorithm is triggered to guide the unmanned vehicle to approach the work area.

[0010] Furthermore, the control terminal is equipped with an AI image recognition module, which automatically identifies the outline of the fire source and the boundary of particulate matter diffusion through a convolutional neural network, generates a dual-mode collaborative operation path, prioritizes the activation of fire water cannons to spray the core area of ​​the fire source, and simultaneously activates ultrasonic water mist devices to form an isolation dust suppression zone around the fire site.

[0011] Furthermore, the central controller executes the following collaborative control strategy: When the dust concentration is high and there is no fire, the ultrasonic water mist generator operates at maximum power. When a fire is detected, the fire monitors are immediately activated and more than 70% of the water supply is allocated as a priority. During firefighting, ultrasonic water mist generators help form a water mist curtain to block the risk of reignition.

[0012] Furthermore, the ultrasonic water mist generator adopts a multi-stage resonant cavity structure, which breaks the water flow into ultra-fine water mist through high-frequency vibration waves. The water mist diffuses outward through the nozzle, and the coverage angle is manually adjustable, with a range of 5-20 meters. The fire monitor is equipped with a DC nozzle with a spray pressure of 0.8-1.2 MPa.

[0013] Furthermore, the water supply system includes a three-stage filtration device and a booster pump, with filtration accuracies of 200 mesh, 500 mesh and 10μm ceramic filter elements respectively. A pressure stabilizing tank is installed at the outlet of the booster pump to control pressure fluctuations within ±5%.

[0014] Furthermore, the unmanned vehicle platform has a built-in self-testing system that monitors water pressure, battery power, and equipment temperature parameters in real time. When an abnormality occurs, it triggers an audible and visual alarm and automatically retreats to a safe area.

[0015] Furthermore, it also includes a multi-vehicle collaborative operation mode, which enables the formation control of more than 3 unmanned vehicles through a Mesh self-organizing network. The central controller can dynamically allocate the operating area of ​​each vehicle according to the fire area and the dust spread range to avoid blind spots.

[0016] Furthermore, the method is applicable to scenarios such as mining, chemical industrial parks, and tunnel construction where fires or high concentrations of particulate matter may occur. The operation response time is less than 3 minutes, the dust reduction efficiency is over 90%, and the effective fire extinguishing coverage radius exceeds 50 meters.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention achieves the following significant advancements through technological integration and intelligent control innovation: 1. Dual-function high-efficiency collaboration Technical implementation: The ultrasonic water mist generator (water mist of about 10μm) coexists with the fire monitor, which can meet the dual functions of dust suppression and fire extinguishing. They share a water supply system and achieve dynamic flow distribution through branch solenoid valves. 2. Enhanced inherent safety Technical implementation: 5G remote control + AI autonomous path planning, personnel do not need to enter the danger zone; 3. Optimization of resource utilization Technical implementation: Three-stage filtration (200 mesh → 500 mesh → 10μm ceramic filter element) ensures water quality, and booster pump + pressure stabilizing tank reduces energy consumption; 4. Intelligent decision support Technical implementation: Real-time analysis of dust data to support the formulation of work strategies; 5. Multi-machine collaborative expansion Technical implementation: Mesh self-organizing network enables dynamic task allocation among multiple vehicles.

[0018] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0019] Figure 1 This is a flowchart of this embodiment; Figure 2 This is a perspective view of this embodiment; Figure 3 This is a right-side perspective view of this embodiment; Figure 4 This is a schematic diagram of the 5G communication module structure in this embodiment.

[0020] In the picture: 1. Unmanned vehicle platform; 2. Ultrasonic water mist generator; 3. Fire monitor; 4. PM2.5 sensor; 5. Embedded industrial computer; 6. 5G communication module. Detailed Implementation

[0021] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0022] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items. Example

[0024] Please see Figure 1 A method for unmanned operation that combines dust suppression and fire extinguishing functions, characterized by the following steps: S1: The ultrasonic water mist generator 2 mounted on the unmanned vehicle platform 1 generates water mist with a particle size of about 10 micrometers, which is used to cover the dusty area in a directional manner to achieve the settling of PM2.5 particles. S2: Fire a large volume of water jets at the fire source using the fire monitor 3 integrated on the same unmanned vehicle platform 1, with the spray angle adjusted in real time via a remote control system. S3: The central controller dynamically switches or synchronously executes dust suppression mode and fire extinguishing mode based on environmental parameters, including dust concentration and gas composition, etc. S4: The ultrasonic water mist generator 2 and the fire monitor 3 share the same water supply system, and the water flow distribution ratio is controlled by a branch solenoid valve.

[0025] The unmanned vehicle platform 1 adopts a tracked all-terrain chassis. The ultrasonic water mist generator 2 and the fire monitor 3 are respectively installed on both sides of the vehicle. The horizontal rotation angle of the fire monitor 3 is ≥270° and the pitch angle adjustment range is -15° to +75°. The long-distance remote control system includes an environmental monitoring module, which integrates a PM2.5 sensor 4 and a gas composition analyzer. The monitoring data is transmitted back to the control terminal through the 5G network and triggers an automatic path planning algorithm to guide the unmanned vehicle to approach the work area. The fire monitor 3 is activated to spray the core area of ​​the fire source first. At the same time, it supports the activation of the ultrasonic water mist generator 2 to form an isolation dust suppression zone around the fire site. The central controller executes the following cooperative control strategy: when the dust concentration is high and there is no fire, the ultrasonic water mist generator 2 operates at maximum power. Upon detection of a fire, fire monitor 3 immediately activates and prioritizes allocating over 70% of its water supply. During firefighting, ultrasonic water mist generator 2 continuously operates at no less than 30% power, forming a water mist curtain to prevent reignition. Ultrasonic water mist generator 2 employs a multi-stage resonant cavity structure, using high-frequency vibration waves to break the water flow into ultra-fine water mist. The spray coverage angle is manually adjustable, with a range of 5-20 meters. Fire monitor 3 is equipped with DC mode nozzles, with a spray pressure of 0.8-1.2 MPa. The water supply system includes a three-stage filtration system and a centrifugal booster pump, with filtration accuracies of 200 mesh, 500 mesh, and 10μm ceramic filter elements, respectively. The booster pump outlet is equipped with a pressure stabilizing tank, controlling pressure fluctuations within ±5%. The unmanned vehicle platform 1 has a built-in self-testing system that monitors water pressure, battery power, and equipment temperature parameters in real time. In case of abnormalities, it triggers an audible and visual alarm and automatically retreats to a safe area. It also includes a multi-vehicle collaborative operation mode, which enables the formation control of more than 3 unmanned vehicles through a Mesh self-organizing network. The operation area of ​​each vehicle can be dynamically allocated according to the fire area and dust diffusion range to avoid coverage blind spots. The method is applicable to mining, chemical industrial parks, and tunnel construction scenarios. The operation response time is less than 3 minutes, the dust reduction efficiency is over 90%, and the effective fire extinguishing coverage radius exceeds 50 meters.

[0026] Example 2: Dust Suppression and Initial Fire Fighting in Mines Hardware configuration: 1. Unmanned vehicle platform 1: Tracked chassis (ground pressure ≤15kPa), load capacity ≥500kg; 2. Ultrasonic water mist generator 2: resonant frequency 80kHz, 6 sets of atomizing plate array, flow rate adjustment range 20-100L / min; 3. Fire monitor 3: DC, rated pressure 1.0MPa, flow rate 300L / min; 4. Sensing system: PM2.5 sensor 4 (range 0-10000μg / m³); 5. Control system: Embedded industrial computer 5, 5G communication module 6.

[0027] Work process: 1. Environmental perception: Within 5 minutes after the explosion, the PM2.5 concentration surged to 8000 μg / m³; 2. Mode Decision: If the scenario is determined to be a combination of "dust + initial fire", the collaborative operation mode will be activated. 3. Firefighting operation: The remote-controlled fire monitor 3 is aimed at the high-temperature area and sprayed in direct current mode (flow rate 250L / min). 4. Simultaneous dust suppression: The ultrasonic water mist generator 2 generates water mist with a particle size of about 10μm at a flow rate of 6L / min, covering an area with a radius of 5 meters, and the PM2.5 concentration drops to 600μg / m³ within 15 minutes; 5. Continuous protection: After the fire is extinguished, the ultrasonic water mist generator 2 maintains 30% power operation to form a protective zone with a humidity of ≥30%.

[0028] Collaborative control strategy: Multi-vehicle platooning: Three autonomous vehicles are networked together via a mesh network, with the central controller responsible for: 1. Vehicle No. 1 approaches the fire source (15 meters away) and focuses on extinguishing the fire; 2. Water mist isolation strips are set up around vehicle No. 2 (spaced 10 meters apart); 3. Vehicle No. 3 will be used to fill in gaps and eliminate blind spots in coverage.

[0029] Water supply system linkage: The flow rate is dynamically distributed through branch solenoid valves. During the peak of the fire, vehicle No. 1 receives 80% of the water supply (240L / min), while vehicle No. 2 receives 20% (60L / min).

[0030] Experiment 1: Comparison of Dust Suppression Efficiency Test conditions Traditional spray (100μm) This invention (10μm) Initial PM2.5 concentration 750μg / m³ 780μg / m³ Concentration after 15 minutes 320μg / m³ 85μg / m³ Water utilization rate (g / m³) 4.2 1.8

[0031] Experiment 2: Fire Extinguishing Performance Test

[0032] Conclusion: Firefighting efficiency increased by 41%, and personnel risk was reduced by more than 90%.

[0033] Experiment 3: Efficiency of Multi-vehicle Collaborative Operation

[0034] Conclusion: Collaborative operations reduced coverage blind spots by 51% and improved system stability by 3 times.

[0035] 1. Ultrasonic atomization efficiency: Tests using an aerosol particle size analyzer (SND 3100) showed: When the power of the atomizing plate resonant cavity is 300W, D50=8μm (meets the design requirement of water mist particle size of about 10μm). The water mist uniformity (Span value) is ≤1.2, which is better than the ≥1.8 of traditional nozzles.

[0036] 2. System reliability: Continuous 72-hour pressure cycle test (0.5-1.2MPa): The leakage rate of the solenoid valve is <0.1 mL / min; The filter clogging alarm has a 100% accuracy rate.

[0037] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A method for unmanned operation with dust suppression and fire extinguishing functions, characterized in that, The method comprises the following steps: S1: generating water mist with a particle size of about 10 microns by the ultrasonic water mist generator 2 mounted on the unmanned vehicle platform (1), and covering the dust area to achieve PM2.5 particle deposition; S2: the same unmanned vehicle platform (1) integrated fire water cannon 3 to the fire source to emit a large flow of water column, the angle of injection is adjusted in real time through the remote control system; S3: the central controller dynamically switches or synchronously executes the dust reduction mode and the fire extinguishing mode according to the environmental parameters, including PM2.5 concentration and gas composition; S4: the ultrasonic water mist generator (2) and the fire water cannon (3) share the same water supply system, and the water flow distribution ratio is controlled by a shunt electromagnetic valve.

2. The method of claim 1, wherein: The unmanned vehicle platform (1) adopts a tracked all-terrain chassis, the ultrasonic water mist generator (2) and the fire water cannon (3) are respectively installed on the front and rear of the vehicle body, and the horizontal rotation angle of the fire water cannon (3) is greater than or equal to 270°, and the pitch angle adjustment range is -15° to +75°.

3. The method of claim 1, wherein: The remote control system includes a PM2.5 sensor (4) and a gas composition analyzer, the monitoring data is returned to the control terminal through the 5G network, and an automatic path planning algorithm is triggered to guide the unmanned vehicle to approach the working area.

4. The method of claim 3, wherein: The control terminal supports remote operation, single mode or dual mode cooperative operation, and preferentially starts the fire water cannon (3) to spray in the core area of the fire source, while starting the ultrasonic water mist generator (2) to form a water mist dust reduction isolation area outside the fire field.

5. The method of claim 1, wherein: The central controller executes the following cooperative control strategy: When the dust concentration is large and there is no fire, the ultrasonic water mist generator (2) operates at maximum power to reduce the PM2.5 concentration; When a fire is encountered, the fire water cannon (3) is immediately started and preferentially allocates more than 70% of the water flow; During the fire extinguishing process, the ultrasonic water mist generator (2) supports simultaneous start to form a water mist curtain wall to block the risk of rekindling.

6. The method of claim 1, wherein: The ultrasonic water mist generator (2) adopts a multi-stage resonant cavity structure, which breaks the water flow into ultra-fine water mist through high-frequency vibration waves, the water mist is diffused outward through a spray pipe, the coverage angle is manually adjustable, and the range is 5-20 meters; the fire water cannon (3) is equipped with a direct current mode nozzle, and the spraying pressure is 0.8-1.2 MPa.

7. The method of claim 1, wherein: The water supply system includes a three-stage filter device and a booster pump, the filter precision is 200 mesh, 500 mesh and 10 μm ceramic filter element in turn, and a pressure stabilizing tank is arranged at the outlet of the booster pump, and the pressure fluctuation is controlled within ±5%.

8. The method of claim 1, wherein: The unmanned vehicle platform (1) is provided with a self-checking system, which monitors the water pressure, battery capacity and equipment temperature parameters in real time, and triggers an audible and light alarm and automatically returns to a safe area when an abnormality occurs.

9. The method of claim 1, wherein: It also includes a multi-vehicle cooperative operation mode, which realizes the formation control of more than three unmanned vehicles through Mesh self-organizing network, dynamically allocates the working area of each vehicle according to the fire area and dust diffusion range, and avoids coverage blind area.

10. The method of unattended operation according to any of claims 1-9, characterized in that: The method is suitable for mining, chemical industry park and tunnel construction scenes, the operation response time is less than 3 minutes, the PM2.5 dust reduction efficiency is more than 90%, and the effective coverage radius of fire extinguishing is more than 50 meters.

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