An integrated vehicle chassis disinfection system for a farm

Abstract

The present application relates to the field of vehicle chassis disinfection, and discloses a breeding farm integrated vehicle chassis disinfection system, which is used to solve the problems of uneven mixing of liquid medicine, existence of disinfection blind area, poor adhesion of fog droplets and low intelligent degree in the prior art. The system comprises the following steps: realizing rapid homogenization of disinfectant through air blowing at the bottom of a multifunctional liquid storage tank, switching to a pressurized mode at the top to establish a stable liquid path, real-time scanning of the chassis, extraction of a high profile curve to identify the geometric features of the tires, depressions and girder areas, dynamic matching and scaling of voltage instructions, control of the electrode array to generate a non-uniform electrostatic field, upward spraying of charged fog droplets by a two-fluid nozzle, active deflection of the fog droplets under the action of the electric field force, deep coverage of the chassis depressions and tire sides, and automatic emptying of the pipeline after the operation by pressure relief and bottom bubbling purging. The present application improves the disinfection coverage rate and liquid medicine utilization rate of complex chassis structures.

Description

Technical Field

[0001] This invention relates to the field of vehicle chassis disinfection, and more particularly to an integrated vehicle chassis disinfection system for livestock farms. Background Technology

[0002] In recent years, with the rapid development of large-scale and intensive animal husbandry, the situation regarding animal disease prevention and control has become increasingly severe. Major animal infectious diseases such as foot-and-mouth disease and African swine fever are characterized by rapid transmission, high mortality rates, and difficulty in prevention and control, causing enormous economic losses to the livestock industry. Epidemiological investigations show that transport vehicles are one of the main carriers of pathogens across regions. In particular, vehicle chassis, due to direct contact with the road environment outside farms, are highly susceptible to contamination with feces, blood, feed residue, and sewage containing high concentrations of viruses.

[0003] Vehicle chassis have complex structures, typically including beams, drive shafts, fuel tanks, tire inner linings, and irregular recessed areas. Traditional disinfection methods have many drawbacks. Therefore, developing a chassis disinfection technology that can adapt to different vehicle chassis structures, achieve comprehensive coverage without blind spots, and is highly automated has become a crucial breakthrough in the biosecurity and epidemic prevention system of livestock farms.

[0004] Traditional disinfection channels often employ manual dosing or simple stirring methods, leading to stratification of the disinfectant concentration within the storage tank and affecting the stability of disinfection efficacy. Furthermore, during pressurized delivery, dissolved gases in the liquid or air bubbles introduced by the pump tend to accumulate at high points in the pipeline or at the nozzle, causing spray pressure fluctuations and air blockage, severely impacting atomization and spray continuity.

[0005] After disinfection operations are completed, a large amount of residual disinfectant often remains in the pipelines. If it is not drained in time, it can easily corrode the pipelines and nozzles, and may also cause the disinfectant to crystallize and clog the nozzles during the settling period. Existing systems lack automated processes for handling residual liquid and residual pressure in the tank.

[0006] Therefore, we propose an integrated vehicle chassis disinfection system for farms to solve the above problems. Summary of the Invention

[0007] This invention provides an integrated vehicle chassis disinfection system for farms, which solves the problems of uneven mixing of disinfectant solutions, blind spots in disinfection, poor droplet adhesion, and low level of intelligence in existing disinfection technologies.

[0008] The first aspect of this invention provides an integrated vehicle chassis disinfection system for livestock farms, comprising: a liquid mixing unit for introducing gas into a liquid storage tank to mix disinfectant solution and water in the tank to obtain a mixed disinfectant solution; a pressurized delivery unit for pressurizing the liquid storage tank and delivering the mixed disinfectant solution to a nozzle assembly located in a disinfection channel; a scanning detection unit for scanning the chassis of a vehicle entering the disinfection channel to obtain chassis morphology feature data; a control unit for determining a voltage control command for an electrode array based on the chassis morphology feature data; and an electrostatic disinfection unit, including the nozzle assembly and the electrode array, for controlling the nozzle assembly to spray charged droplets and simultaneously applying high voltage to the electrode array according to the voltage control command, forming an electrostatic field between the chassis and the electrode array to guide the charged droplets to directional deposition on the chassis surface, thereby completing chassis disinfection.

[0009] Optionally, in a first implementation of the first aspect of the present invention, a vehicle detection unit is further provided at the entrance of the disinfection channel for detecting the vehicle entering before the liquid mixing unit introduces gas into the liquid storage tank; The liquid mixing unit is specifically used to: blow gas into the liquid storage tank through an air inlet pipe located at the bottom of the liquid storage tank via an air supply device, causing the disinfectant deposited at the bottom of the liquid storage tank to roll upwards and form a convection circulation with the water, and stop the gas supply after continuous mixing for a preset time to obtain a uniformly concentrated mixed disinfectant; wherein, the preset time is 3 to 5 seconds.

[0010] Optionally, in a second implementation of the first aspect of the present invention, the pressurized delivery unit is specifically used for: Gas is introduced into the top of the storage tank to pressurize it, raising the internal pressure to a preset pressure. This pressure forces the mixed disinfectant solution at the bottom of the storage tank through the infusion tube to the nozzle assembly, filling the nozzle assembly and the infusion tube with the pressurized mixed disinfectant solution. Excess mixed disinfectant solution flows back to the storage tank through the return line. The preset pressure is 0.1 to 0.2 MPa.

[0011] Optionally, in a third implementation of the first aspect of the present invention, the scanning detection unit includes a line laser profile sensor, used for: When the vehicle passes through the disinfection channel at a speed of 0.1 to 0.3 meters per second, a laser signal is emitted to the chassis and the reflected signal from the chassis is received. The change in the chassis height above the ground along the direction of the vehicle's movement is recorded, and a continuous height profile curve is generated. The chassis outline feature area and corresponding dimensions are determined based on the height profile curve to form the chassis shape feature data; the chassis outline feature area includes at least the tire area, the recessed area and the beam area.

[0012] Optionally, in a fourth implementation of the first aspect of the present invention, the scanning detection unit determines the chassis contour feature region and corresponding dimensions of the chassis based on the height contour curve, including: Perform a first-order difference operation on the height profile curve to obtain the height change rate curve; The continuous intervals in the height change rate curve where the absolute value exceeds the preset change rate threshold are marked as edge feature points, and the flat intervals between two adjacent edge feature points are marked as flat plate regions. The intervals in the flat plate region whose height is lower than that of the adjacent flat plate region are marked as the recessed region, and the intervals whose height is higher than that of the adjacent flat plate region and whose width is greater than a preset width value are marked as the beam region; Record the depth and width of the recessed area, the height and width of the beam area, and the symmetrical position parameters of the tire area.

[0013] Optionally, in a fifth implementation of the first aspect of the present invention, the control unit is specifically used for: Match the corresponding electrode voltage combination in a pre-stored electrode voltage lookup table; wherein, the electrode voltage lookup table includes various chassis morphology categories and the on / off state and voltage ratio of each electrode in the electrode array; Based on the chassis morphology feature data, the chassis morphology category is identified. Combining the vehicle's speed through the disinfection channel and the charge-to-mass ratio of the charged droplets, the corresponding electrode voltage combination is directly read from the electrode voltage lookup table to generate a voltage control command that includes the on / off state of each electrode and the applied voltage value. The chassis morphology category includes any one of flat plate type, groove type, and beam type.

[0014] Optionally, in a sixth implementation of the first aspect of the present invention, the nozzle group is a two-fluid nozzle group; The electrostatic disinfection unit controls the two-fluid nozzle group to spray charged droplets, specifically: first, the air path of the two-fluid nozzle group is opened to make the nozzle group spray high-speed airflow, then the liquid path of the two-fluid nozzle group is opened to make the mixed disinfectant liquid break up and atomize in the high-speed airflow, and at the same time, a polarization voltage is applied to the polarization electrode inside the two-fluid nozzle group to make the atomized droplets charged, thus obtaining the charged droplets. The electrostatic disinfection unit forms an electrostatic field between the chassis and the electrode array to guide the charged droplets to deposit directionally on the surface of the chassis. Specifically, it is used to: apply high voltage to the electrode array according to the voltage control command, form a non-uniform electrostatic field between the chassis and the electrode array, cause the charged droplets to deviate from their vertical movement trajectory, and deflect and deposit directionally towards the concave area and tire area of ​​the chassis, forming a fully covered disinfectant layer.

[0015] Optionally, in a seventh implementation of the first aspect of the present invention, a reset control unit is further included, used to perform a standby reset after chassis disinfection is completed: After the vehicle has completely left the disinfection channel, the high-voltage power supply to the electrode array and the control valve for supplying fluid to the nozzle group are turned off in sequence; then the exhaust valve located on the top of the liquid storage tank is opened to release the residual gas pressure in the liquid storage tank to normal pressure.

[0016] Optionally, in an eighth implementation of the first aspect of the present invention, the reset control unit is further configured to perform pipeline purging: Keep the exhaust valve open and introduce gas into the storage tank through the air inlet pipe. Use the upward bubbling of the gas to expel the residual gas in the storage tank and the mixed disinfectant remaining in the infusion tube through the exhaust valve. After a preset emptying time, close all valves.

[0017] Beneficial effects: The same multi-functional storage tank can achieve two completely different functions—turbulent mixing and constant pressure liquid supply—by switching between bottom and top air intake modes. Compared to traditional mechanical stirring, the rising air bubbles generated by bottom air intake can form a full-tank convection circulation within 3-5 seconds, completely eliminating the stratification of the liquid concentration. It eliminates the need for complex stirring motor structures and actively discharges dissolved gases and foam before pressurization, solving the atomization interruption and pulsation problems caused by tiny air bubbles in two-fluid nozzles, ensuring the continuity and stability of the spray. By combining industrial-grade line laser contour sensing technology with high-voltage electrostatic field targeted deposition technology, a leap has been achieved from blind spraying to image-guided precision application. By extracting the chassis height contour curve in real time, the system can distinguish between flat surfaces, recesses, and beam areas, moving beyond a one-size-fits-all fixed spraying approach. Utilizing a non-uniform electric field, the system alters the trajectory of charged droplets, causing them to bypass obstacles like iron filings attracted by a magnet, actively adhering to chassis recesses and tire sides. An electrode voltage lookup table was established, and a scaling factor based on geometric parameters was introduced to simplify complex spatial electric field calculations into efficient table lookup and linear operations. This avoids complex online finite element electric field simulation calculations and meets the real-time control requirements when vehicles pass at low speeds. The voltage is dynamically fine-tuned based on the indentation depth and beam height, ensuring penetration in deep indentation areas while avoiding excessive spraying in flat areas, saving on chemical costs and reducing environmental pollution. The depressurization-purging-emptying process after disinfection is standardized and automated. Compressed air is used to back-purge pipelines and tanks to thoroughly remove residual medicine, prevent chemical crystals from clogging precision nozzles, ensure that the system is free of pressure load in standby mode, extend the service life of seals and pipelines, and lower the maintenance threshold for farms. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of one embodiment of the integrated vehicle chassis disinfection system for farms according to the present invention. Detailed Implementation

[0019] This invention provides an integrated vehicle chassis disinfection system for livestock farms, addressing the problems of uneven drug mixing, blind spots, poor droplet adhesion, and low level of intelligence in existing disinfection technologies. The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than that illustrated or described herein. Furthermore, the terms "comprising" or "having" and any variations thereof are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or device that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices.

[0020] For ease of understanding, the specific process of the embodiments of the present invention is described below. Please refer to [link / reference]. Figure 1 One embodiment of the integrated vehicle chassis disinfection system for farms in this invention includes: 101. Liquid storage and mixing unit: After detecting that a vehicle has entered the disinfection channel through an infrared sensor, the unit starts the air compressor and introduces compressed air into the bottom of the multi-functional liquid storage tank. The bottom air blowing causes the disinfectant and water in the tank to be mixed evenly to obtain a mixed disinfectant solution.

[0021] It is understood that the executing entity of this invention can be an integrated vehicle chassis disinfection device for farms, or it can be a terminal or a server; no specific limitation is made here. This embodiment of the invention will be described using a server as an example.

[0022] Specifically, the process of mixing the disinfectant and water evenly in the tank by bottom air blowing is as follows: The bottom of the multi-functional storage tank is equipped with an air inlet pipe, and the outlet of the air inlet pipe is close to the inner wall of the bottom of the tank. Compressed air is blown upward into the tank from the outlet through the air inlet pipe, carrying the disinfectant deposited at the bottom of the tank upward and rolling it up, so that the disinfectant and the added water form a convection circulation in the tank. After mixing for 3 to 5 seconds, the air inlet is closed to obtain a uniformly concentrated mixed disinfectant.

[0023] It should be noted that in this embodiment, the total volume of the multi-functional storage tank of the disinfection system is 300L. In the current operating state, 200L of clean water has been pre-filled inside, and 2L of concentrated disinfectant has been added. Since the specific gravity of this concentrated disinfectant is slightly greater than that of water, it naturally settles at the bottom of the storage tank after being added, forming a concentration stratification.

[0024] When a truck enters the disinfection tunnel, the beams of the infrared sensors installed on both sides of the tunnel entrance, 0.8 meters above the ground, are blocked by the vehicle's front bumper. The infrared sensors then send a trigger signal to the system controller. Within 0.1 seconds of receiving the signal, the controller starts the air compressor in the tunnel's equipment room and simultaneously opens the air intake solenoid valve connected to the bottom of the multi-functional liquid storage tank.

[0025] To ensure rapid and uniform mixing of large volumes of liquid, the bottom of the multi-functional storage tank is equipped with a set of annular microporous aeration discs with 2mm diameter air outlet holes, evenly distributed close to the inner wall of the tank bottom. Compressed air generated by the air compressor is regulated by the pipeline pressure reducing valve and enters the bottom aeration discs at a pressure of 0.3MPa through the air inlet pipe, then is evenly blown upwards into the liquid inside the tank.

[0026] Compressed air at 0.3 MPa instantly forms a large, dense cluster of rising bubbles at the bottom of the tank. The strong lift generated by these tiny bubbles directly disturbs and carries the concentrated disinfectant deposited at the bottom of the tank upwards, causing it to tumble rapidly. As the gas-liquid mixture in the central area surges upwards, the liquid at the perimeter of the tank flows back down along the inner wall of the tank under the influence of gravity, creating a strong vertical convection circulation throughout the entire tank.

[0027] The system controller sets the opening time of the bottom air inlet solenoid valve to 45 seconds. After 45 seconds of continuous bottom aeration and mixing, the disinfectant and clean water deposited at the bottom are fully diffused and mixed due to the large-area air-liquid contact and continuous agitation provided by the aeration disc. Subsequently, the controller automatically closes the air inlet solenoid valve, and the originally layered liquid is transformed into a uniformly concentrated disinfectant mixture.

[0028] 102. Pressurized delivery unit, used to switch the multi-functional storage tank containing the mixed disinfectant to the top pressurization mode, using compressed air generated by the air compressor to pressurize the mixed disinfectant through the delivery pipe to the two-fluid nozzle group located below the ground grid of the disinfection channel, so that the nozzle group is filled with pressurized disinfectant.

[0029] Specifically, the process of switching to the top pressurization mode is as follows: Close the air inlet solenoid valve at the bottom of the multi-functional storage tank, and simultaneously open the air inlet solenoid valve at the top of the tank, allowing compressed air generated by the air compressor to enter from the top of the tank. The air pressure inside the tank rises to 0.1 to 0.2 MPa, forcing the mixed disinfectant solution from the bottom outlet pipe into the delivery pipe, and continuing to deliver it until the inside of the two-fluid nozzle assembly and the delivery pipe are completely filled with pressurized disinfectant solution. Excess disinfectant solution flows back to the storage tank through the return pipe of the nozzle assembly, forming a stable spray path. Further, before switching to the top pressurization mode, first open the exhaust solenoid valve at the top of the multi-functional storage tank and keep the bottom air inlet solenoid valve open for 3 to 5 seconds, allowing compressed air to blow the liquid inside the tank from the bottom upwards, carrying away the dissolved residual gas and surface foam from the exhaust valve. Then close the exhaust solenoid valve and the bottom air inlet solenoid valve to obtain the degassed mixed disinfectant solution; then execute the top pressurization step to pump the degassed mixed disinfectant solution to the two-fluid nozzle assembly.

[0030] It should be noted that at this time, the multi-functional storage tank contains 202L of well-mixed disinfectant, and there is an air clearance zone of about 98L in the upper part of the tank.

[0031] The degassing process begins. While keeping the bottom air inlet solenoid valve of the storage tank open, the system controller immediately opens the top exhaust solenoid valve. Compressed air from the bottom continues to blow upwards, purging the liquid inside the tank for a duration set to 4 seconds. During these 4 seconds, tiny air bubbles dissolved in the liquid due to the previous intense aeration are accelerated out by the rising airflow, and surface foam accumulated on the liquid surface is also discharged through the top exhaust solenoid valve along with the airflow. After 4 seconds, the controller closes both the top exhaust solenoid valve and the bottom air inlet solenoid valve, obtaining the degassed mixed disinfectant solution.

[0032] The system then enters the top pressurization and one-way pipeline filling stage. The controller opens the air inlet solenoid valve on the top of the tank, and compressed air flows into the clearance area from the top of the tank. The air pressure inside the storage tank rises rapidly within 3 seconds and is stabilized at 0.15 MPa by the pressure reducing valve.

[0033] Under the thrust of high-pressure gas at the top, the disinfectant at the bottom of the tank is forced into the outlet pipe and then into the main infusion pipeline. This unidirectional infusion pipeline is 25m long and supplies liquid to 12 two-fluid nozzles below the floor grid. As the disinfectant propels forward within the pipeline, it displaces the air inside, and the automatic vent valve at the end of the pipeline opens to release air. After approximately 5 seconds, the disinfectant completely fills the entire infusion pipeline and the liquid phase chambers inside each two-fluid nozzle. At this point, the automatic vent valve at the end of the pipeline closes due to buoyancy upon contact with the liquid, the system pressure reaches equilibrium, and backflow is eliminated, successfully establishing a constant pressure of 0.15MPa, bubble-free, dead-end-style spray path.

[0034] 103. Scanning and detection unit, used to scan the vehicle chassis contour using a line laser contour sensor to obtain chassis shape feature data.

[0035] Specifically, the process of obtaining chassis morphology feature data is as follows: when the vehicle passes through the disinfection channel at a speed of 0.1 to 0.3 meters per second, the linear laser profile sensor installed at the entrance of the channel emits a linear laser towards the vehicle chassis, receives the chassis reflection signal, and records the change in chassis ground clearance at various positions along the vehicle's forward direction, forming a continuous chassis height profile curve. The characteristic positions and dimensions of the tire area, chassis recess area, and chassis beam area are marked on this curve, serving as chassis morphology feature data.

[0036] Furthermore, the specific process of extracting feature positions and dimensions from the continuous chassis height profile curve is as follows: perform a first-order difference operation on the chassis height profile curve to obtain the height change rate curve; mark the continuous intervals where the absolute value of the height change rate exceeds a preset threshold as edge feature points, and mark the flat intervals between two adjacent edge feature points as flat plate regions; mark the intervals in the flat plate regions where the height is lower than that of the adjacent flat plate regions as recessed regions, and mark the intervals where the height is higher than that of the adjacent flat plate regions and the width is greater than a preset value as beam regions; at the same time, record the depth and width of the recessed regions, the height and width of the beam regions, and the symmetrical positions of the left and right sides of the tire regions to form chassis morphology feature data with region type and geometric parameter annotations.

[0037] It should be noted that, continuing from the above scenario, when the truck enters the disinfection channel at a constant speed of 0.2 m / s, the linear laser profile sensor installed on the central axis of the ground at the channel entrance is simultaneously triggered. The sensor emits a transverse linear laser beam towards the vehicle chassis at a scanning frequency of 100 Hz, receives the diffuse reflection signal from the chassis surface, and records the height data of each point on the chassis perpendicular to the ground. As the vehicle moves forward at a constant speed, the system continuously accumulates scan lines in the longitudinal direction, forming a continuous chassis height profile curve.

[0038] The system controller performs real-time feature extraction on this continuous chassis height profile curve. The specific data processing procedure is as follows: The controller performs a first-order difference operation on the chassis height profile curve to generate a height change rate curve. The system sets the height change rate threshold to 50mm and marks continuous data intervals with absolute values ​​exceeding this threshold as "edge feature points". Between two adjacent edge feature points, smooth data segments with height fluctuations of less than 10mm are marked as "flat plate areas".

[0039] The controller performs height comparison and classification on each identified flat area: Reference plate area: The system identifies a large area of ​​the chassis's conventional floor plate and records its average ground clearance as 0.8m, which serves as a reference for adjacent areas.

[0040] Depression Area Extraction: The controller detected a flat section at the rear of the chassis with a ground clearance of 0.5m. Since this section is lower than the adjacent 0.8m reference flat section, the system marked it as a "depression area." Calculations showed that the relative depth of this depression area was 0.3m, and its lateral span was 0.6m.

[0041] Main beam area extraction: The controller identifies a flat section with a ground clearance of 1.1m on both sides of the chassis centerline. Since this height is significantly higher than the 0.8m reference area, and its lateral width is 0.2m, which is greater than the system's preset width threshold, the system identifies and marks it as the "main beam area" with a relative height of 0.3m.

[0042] Tire area calibration: The system captures the arc-shaped contour features of the tire at the outermost edge of the scan line and calculates the symmetrical distance between the inner sides of the left and right tires as 1.8m.

[0043] The system outputs chassis topography data, clearly marking the dent features, beam features, and tire symmetry coordinates.

[0044] 104. Control unit, used to match the corresponding electrode voltage combination in the electrode voltage lookup table pre-stored in the controller based on chassis topography feature data, and obtain voltage control commands for each electrode.

[0045] Specifically, the process of matching the corresponding electrode voltage combination in the electrode voltage lookup table pre-stored in the controller is as follows: The electrode voltage lookup table is generated by offline experiments or simulations and contains various typical chassis morphology types and the on / off status and voltage ratio of each electrode in the corresponding electrode array; Based on the obtained chassis morphology feature data, the chassis is identified as belonging to one of the following morphology categories: flat plate, groove, or beam; and according to the morphology category, vehicle speed gear, and disinfectant charge-to-mass ratio gear, the electrode voltage combination matching the conditions is directly read from the lookup table to generate a voltage control command containing the on / off status of each electrode and the applied voltage value.

[0046] Furthermore, after extracting the depth value of the recessed area and the height value of the beam area from the chassis morphology feature data, the recessed depth and beam height are divided by the corresponding preset reference depth value and reference height value to obtain the depth scaling factor and height scaling factor. The voltage value of each electrode in the electrode voltage combination is multiplied by the weighted average of the depth scaling factor and the height scaling factor to obtain the scaled electrode voltage value, and the voltage control command is updated.

[0047] It should be noted that after the controller obtains the chassis morphology feature data (including parameters such as the relative depth of the depression of 0.3m and the relative height of the beam of 0.3m) as described in step 103, the morphology recognition module of the controller first performs a category determination. Since the geometric features of the depression area in the data meet the preset feature weights, the system determines that the vehicle chassis belongs to the groove-type morphology category in the classification.

[0048] The controller reads the current vehicle speed and disinfectant charge-to-mass ratio. The current vehicle speed is 0.2 m / s, and the system automatically shifts it to the preset low speed setting; the current disinfectant charge-to-mass ratio reported by the electrostatic atomizing nozzle is 0.5 mC / kg, and it is shifted to the preset standard charge-to-mass ratio setting.

[0049] Based on the determined "groove-shaped" morphology category, "low-speed gear," and "standard charge-to-mass ratio gear," the controller performs a multi-dimensional search and matching in a pre-stored electrode voltage lookup table. Under this specific combination of conditions, the lookup table directly outputs the corresponding basic electrode voltage combination, specifically: all four electrodes in the electrode array are in an "on" state, with the first electrode closest to the front of the channel having a basic voltage of +20kV, the second electrode on the left having a basic voltage of +15kV, the third electrode on the right having a basic voltage of +15kV, and the fourth electrode on the rear having a basic voltage of +25kV.

[0050] The internally preset reference depression depth value is 0.2m, and the reference beam height value is also 0.2m. The controller divides the actual extracted depression depth of 0.3m by the reference value of 0.2m to calculate a depth ratio coefficient of 1.5; and divides the actual extracted beam height of 0.3m by the reference value of 0.2m to calculate a height ratio coefficient of 1.5.

[0051] The system sets the weights for the depth scaling factor and the height scaling factor to 0.6 and 0.4, respectively. The weighted average calculation yields a comprehensive scaling factor of 1.5. Next, the controller multiplies the base voltage value by this factor of 1.5 to obtain the updated applied voltage values: +30kV for the first electrode, +22.5kV for the second electrode, +22.5kV for the third electrode, and +37.5kV for the fourth electrode.

[0052] 105. Electrostatic disinfection unit, including solenoid valves that open the compressed air and pressurized disinfectant of the two-fluid nozzle assembly, causing the nozzles to spray charged droplets upwards. At the same time, according to the voltage control command, high voltage is applied to the electrode array to form an electrostatic field that guides the charged droplets to be deposited directionally on the chassis surface, thus completing the full-coverage disinfection of the chassis.

[0053] Specifically, the process of spraying charged droplets upward from the nozzle is as follows: First, the compressed air solenoid valve of the two-fluid nozzle assembly is opened to make the nozzle spray high-speed airflow. Then, the pressurized disinfectant solenoid valve is opened to break up and atomize the pressurized disinfectant in the high-speed airflow. At the same time, a polarization voltage is applied to the polarization electrode inside the nozzle to make the droplets carry surface charge, thus obtaining charged droplets with static electricity. Then, according to the voltage control command, a high voltage is applied to the electrode array to form a non-uniform electrostatic field between the chassis and the electrode. Under the action of the electrostatic field force, the charged droplets deviate from their original vertical trajectory and deflect towards the recessed area of ​​the chassis and the side of the tire, where they adhere and deposit, forming a disinfectant layer covering all exposed surfaces of the chassis.

[0054] It should be noted that, following the scenario of generating the aforementioned control commands, the system is now ready to implement directional spraying with an electrostatic field.

[0055] The atomization and charging phase begins. The controller first opens the compressed air solenoid valve of the two-fluid nozzle assembly, allowing 0.4 MPa compressed air to enter the nozzle, creating a high-speed airflow of 50 m / s at the nozzle opening. After a 0.5-second delay, the controller opens the pressurized disinfectant solenoid valve, allowing 0.15 MPa disinfectant to enter the nozzle. This disinfectant is sheared and broken up by the high-speed airflow, forming fine droplets with a particle size distribution of 30 to 50 μm. Simultaneously, the controller applies a +2 kV DC polarization voltage to the annular induction electrode inside the nozzle. At the moment of spraying, the disinfectant undergoes charge transfer, causing the droplet surface to acquire a positive charge. The measured charge-to-mass ratio of the charged droplets reaches the preset 0.5 mC / kg.

[0056] According to the instructions generated in step 104, the controller connects the high-voltage power supply to the electrostatic guiding electrode array under the chassis. To guide the positively charged droplets to overcome gravity and move upwards to precisely cover the specific chassis morphology, the system applies a non-uniform positive high voltage to the electrode array, establishing a spatial electrostatic field between the electrodes and the grounded vehicle chassis (relative potential of 0V). The specific parameters applied to each electrode are shown in Table 1 below: Table 1

[0057] Like charges repel each other, and the high-voltage electrode array at the bottom strongly repels positively charged droplets, accelerating them towards the zero-potential chassis. In particular, the fourth electrode at the rear applies the highest voltage of +37.5kV, creating a strong local electric field gradient below the 0.3m recessed area of ​​the chassis. Under the pull of this electric field gradient, the charged droplets experience an electrostatic swirl effect, causing a large number of droplets to deflect and adhere to the recessed area. As the vehicle passes at a speed of 0.2m / s, a uniform disinfectant film is formed in all areas of the chassis, completing step 105.

[0058] 106. The reset control unit is used to sequentially shut off the high-voltage power supply of the electrode array, the compressed air solenoid valve of the two-fluid nozzle group, and the pressurized disinfectant solenoid valve after the vehicle has completely left the disinfection channel. Then, it opens the exhaust solenoid valve on the top of the multi-functional storage tank to reduce the residual air pressure in the tank to equal the ambient air pressure, thereby obtaining the multi-functional storage tank in a normal pressure standby state.

[0059] Furthermore, after opening the exhaust solenoid valve on the top of the multi-functional storage tank, the following steps are also included: while keeping the exhaust solenoid valve open, opening the air inlet solenoid valve at the bottom of the storage tank and introducing compressed air. The compressed air bubbles upward from the bottom of the tank, expelling the residual gas in the tank and the residual disinfectant in the infusion pipeline from the exhaust valve. After 5 to 10 seconds, all valves are closed to obtain a standby state storage tank with the internal pipeline emptied and the tank under normal pressure.

[0060] It should be noted that, continuing from the above scenario, once the truck has completely driven out of the disinfection channel, the infrared sensor at the channel exit loses its signal obstruction, and the system controller immediately initiates the shutdown reset and pipeline positive pressure purging procedure.

[0061] Entering the orderly shutdown and main tank depressurization stage. The controller sequentially shuts down the high-voltage power supply of the electrode array and the valve group of the nozzle according to the preset safety sequence, and then opens the exhaust solenoid valve on the top of the multi-functional liquid storage tank to rapidly release the 0.15MPa working air pressure maintained in the tank until it is balanced with the external atmospheric pressure.

[0062] The system enters an independent positive pressure purging phase to prevent issues with backflow at the low-pressure end of the pipeline. After confirming the main tank is depressurized, the controller closes the main outlet valve at the bottom of the storage tank, disconnecting the main tank from the infusion pipeline. Next, the controller opens the bypass purging solenoid valve located at the beginning of the main infusion pipeline (near the outlet of the storage tank) and simultaneously reopens the disinfectant solenoid valve of the two-fluid nozzle assembly as a drainage channel.

[0063] Compressed air at 0.3 MPa is directly injected into the 25m long main infusion line via a bypass. Under the strong positive air pressure, the residual disinfectant in the line is rapidly pushed forward along the normal infusion direction, and finally sprayed directly out of each two-fluid nozzle and discharged. This positive pressure purging process lasts for 8 seconds.

[0064] After 8 seconds, the controller closes the bypass purge solenoid valve and the nozzle assembly valve, and the entire system goes silent. At this time, the multi-functional storage tank returns to normal pressure standby state, and the liquid in the infusion pipeline is completely purged forward, effectively avoiding the risk of pipe scaling or freezing and cracking in winter.

[0065] The specific execution sequence of actions and the changes in system state are shown in Table 2 below: Table 2

[0066] The system has completed a full disinfection cycle and is now in safe standby mode.

[0067] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An integrated vehicle chassis disinfection system for livestock farms, characterized in that, include: The liquid mixing unit is used to introduce gas into the liquid storage tank to mix the disinfectant solution and water in the tank to obtain a mixed disinfectant solution. A pressurized delivery unit is used to pressurize the storage tank and deliver the mixed disinfectant solution to the nozzle assembly located in the disinfection channel; The scanning and detection unit is used to scan the chassis of the vehicle entering the disinfection channel and obtain chassis morphology feature data. The control unit is used to determine the voltage control command for the electrode array based on the chassis topography feature data; The electrostatic disinfection unit includes the nozzle group and the electrode array, which controls the nozzle group to spray charged droplets and simultaneously applies high voltage to the electrode array according to the voltage control command, forming an electrostatic field between the chassis and the electrode array to guide the charged droplets to be deposited directionally on the surface of the chassis, thereby completing the chassis disinfection.

2. The integrated vehicle chassis disinfection system for livestock farms according to claim 1, characterized in that, It also includes a vehicle detection unit located at the entrance of the disinfection channel, used to detect the vehicle entering before the liquid mixing unit introduces gas into the liquid storage tank; The liquid mixing unit is specifically used to: blow gas into the liquid storage tank through an air inlet pipe located at the bottom of the liquid storage tank via an air supply device, causing the disinfectant deposited at the bottom of the liquid storage tank to roll upwards and form a convection circulation with the water, and stop the gas supply after continuous mixing for a preset time to obtain a uniformly concentrated mixed disinfectant; wherein, the preset time is 3 to 5 seconds.

3. An integrated vehicle chassis disinfection system for livestock farms according to claim 1 or 2, characterized in that, The pressurized delivery unit is specifically used for: Gas is introduced into the top of the storage tank to pressurize it, raising the internal pressure to a preset pressure. This pressure forces the mixed disinfectant solution at the bottom of the storage tank through the infusion tube to the nozzle assembly, filling the nozzle assembly and the infusion tube with the pressurized mixed disinfectant solution. Excess mixed disinfectant solution flows back to the storage tank through the return line. The preset pressure is 0.1 to 0.2 MPa.

4. The integrated vehicle chassis disinfection system for livestock farms according to claim 1, characterized in that, The scanning detection unit includes a line laser contour sensor, used for: When the vehicle passes through the disinfection channel at a speed of 0.1 to 0.3 meters per second, a laser signal is emitted to the chassis and the reflected signal from the chassis is received. The change in the chassis height above the ground along the direction of the vehicle's movement is recorded, and a continuous height profile curve is generated. The chassis outline feature area and corresponding dimensions are determined based on the height profile curve to form the chassis shape feature data; the chassis outline feature area includes at least the tire area, the recessed area and the beam area.

5. The integrated vehicle chassis disinfection system for livestock farms according to claim 4, characterized in that, The scanning detection unit determines the chassis contour feature area and corresponding dimensions of the chassis based on the height contour curve, including: Perform a first-order difference operation on the height profile curve to obtain the height change rate curve; The continuous intervals in the height change rate curve where the absolute value exceeds the preset change rate threshold are marked as edge feature points, and the flat intervals between two adjacent edge feature points are marked as flat plate regions. The intervals in the flat plate region whose height is lower than that of the adjacent flat plate region are marked as the recessed region, and the intervals whose height is higher than that of the adjacent flat plate region and whose width is greater than a preset width value are marked as the beam region; Record the depth and width of the recessed area, the height and width of the beam area, and the symmetrical position parameters of the tire area.

6. The integrated vehicle chassis disinfection system for livestock farms according to claim 5, characterized in that, The control unit is specifically used for: Match the corresponding electrode voltage combination in a pre-stored electrode voltage lookup table; wherein, the electrode voltage lookup table includes various chassis morphology categories and the on / off state and voltage ratio of each electrode in the electrode array; Based on the chassis morphology feature data, the chassis morphology category is identified. Combining the vehicle's speed through the disinfection channel and the charge-to-mass ratio of the charged droplets, the corresponding electrode voltage combination is directly read from the electrode voltage lookup table to generate a voltage control command that includes the on / off state of each electrode and the applied voltage value. The chassis morphology category includes any one of flat plate type, groove type, and beam type.

7. An integrated vehicle chassis disinfection system for livestock farms according to claim 1 or 4, characterized in that, The nozzle assembly is a two-fluid nozzle assembly; The electrostatic disinfection unit controls the two-fluid nozzle group to spray charged droplets, specifically: first, the air path of the two-fluid nozzle group is opened to make the nozzle group spray high-speed airflow, then the liquid path of the two-fluid nozzle group is opened to make the mixed disinfectant liquid break up and atomize in the high-speed airflow, and at the same time, a polarization voltage is applied to the polarization electrode inside the two-fluid nozzle group to make the atomized droplets charged, thus obtaining the charged droplets. The electrostatic disinfection unit forms an electrostatic field between the chassis and the electrode array to guide the charged droplets to deposit directionally on the surface of the chassis. Specifically, it is used to: apply high voltage to the electrode array according to the voltage control command, form a non-uniform electrostatic field between the chassis and the electrode array, cause the charged droplets to deviate from their vertical movement trajectory, and deflect and deposit directionally towards the concave area and tire area of ​​the chassis, forming a fully covered disinfectant layer.

8. The integrated vehicle chassis disinfection system for livestock farms according to claim 7, characterized in that, It also includes a reset control unit, used to perform a standby reset after chassis disinfection is complete: After the vehicle has completely left the disinfection channel, the high-voltage power supply to the electrode array and the control valve for supplying fluid to the nozzle group are turned off in sequence; then the exhaust valve located on the top of the liquid storage tank is opened to release the residual gas pressure in the liquid storage tank to normal pressure.

9. An integrated vehicle chassis disinfection system for livestock farms according to claim 8, characterized in that, The reset control unit is also used to perform pipeline purging: Keep the exhaust valve open and introduce gas into the storage tank through the air inlet pipe. Use the upward bubbling of the gas to expel the residual gas in the storage tank and the mixed disinfectant remaining in the infusion tube through the exhaust valve. After a preset emptying time, close all valves.

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