221 results about "Airway" patented technology

The invention relates to an air route planning method based on an improved bidirectional fast random exploration tree algorithm, and is applied to the technical field of air route planning. The method comprises the following steps: acquiring a current node position, a target node position and terrain information of a target area of route planning; according to the terrain information, a search strategy combination of the target area is determined, the search strategy combination is used for constraining the extension direction of the air route nodes, and the air route nodes are determined based on an improved bidirectional fast random exploration tree algorithm. And determining a route node set according to the current node position, the target node position and the search strategy combination. The route nodes in the route node set are optimized, a target route is generated, and the target route is the route meeting the motion constraint of the fixed-wing aircraft. The expansion direction of the air route nodes is restrained through the search strategy combination, excessive redundant nodes caused during random sampling are avoided, and the convergence speed of air route planning can be increased. Therefore, the air route planning efficiency can be improved.

The invention discloses a data knowledge dual-driven unsupervised ship navigation mode identification method, and belongs to the technical field of ship traffic management. Comprising the following steps: acquiring AIS historical data sets of all ships; performing trajectory clustering based on a DBSCAN clustering algorithm of particle swarm optimization to obtain similar ship matching pairs; constructing a ship macroscopic navigation mode encoder based on a frequency domain multilayer sensor and a comparative learning method; constructing a ship microcosmic navigation mode decoder based on the hypergraph neural network; and acquiring real-time AIS data of a ship, and inputting the real-time AIS data into the trained ship macroscopic navigation mode encoder and the trained ship microcosmic navigation mode decoder to obtain intermediate features of a ship encountering scene. According to the method, the navigation mode of the ship in a habitual airway and the collision avoidance behavior mode in a multi-ship encounter scene are effectively extracted, and the limitation that the ship navigation mode recognition precision is insufficient in a single scale in the past is improved.

The invention discloses a low-altitude air route generation method, device and equipment and a storage medium, and belongs to the technical field of low-altitude flight. The method comprises the following steps: acquiring a three-dimensional space model and population density distribution of a target area; determining the path cost of each voxel based on the population density of each voxel at the ground projection in the three-dimensional space model, the obstacle state of each voxel and the distance between each voxel and the target facility; and taking a first position in the three-dimensional space model as a starting point, taking a second position in the three-dimensional space model as an end point, and taking the lowest sum of the path costs of voxels passing between the first position and the second position as a target to carry out path planning so as to obtain a target low-altitude airway. According to the scheme, the low-altitude aircraft can be far away from a densely populated area, avoids obstacles as much as possible and flies according to the instruction of the target facility in the target area, and meanwhile the flight efficiency and safety are guaranteed.

The utility model discloses a novel air passage detection device, which comprises a sensor outer cover, a sensor inner cover and a sensor outer cover, the air filtering cotton is arranged at the air inlet end of the front air channel and used for filtering air moisture and particle impurities; the sensor assembly is arranged at the gas outlet end of the front gas channel and used for detecting gas concentration and components; the sealing foam is arranged between the sensor outer cover and the sensor assembly in a filling manner and is used for enabling gas to enter the sensor assembly to prevent side leakage; the fan assembly comprises a rear air channel and is used for regulating and controlling the gas flow during preheating and working of the sensor assembly according to the gas concentration and sensitivity; the metal hose comprises a middle air passage and is used for adjusting a measurable range and a measurement angle; wherein the front air passage, the middle air passage and the rear air passage are sequentially communicated to form a detection air passage. According to the utility model, the measurable range and the measurement angle are adjusted, and the air moisture and particulate impurities are filtered by adopting the gas filtering cotton, so that the impact influence on the sensor during sampling is reduced.

The invention discloses a non-control tower air route trajectory prediction method, system and device under environmental disturbance and a medium, belongs to air route trajectory prediction in the technical field of aviation, and solves the technical problem of low accuracy of air route trajectory prediction of an aircraft in a non-control tower terminal airspace in the prior art. The method comprises the following steps: designing a conditional variation auto-encoder to perform modeling on uncertainty of an external environment, and predicting an expected value of an environment factor of a future time node through Monte Carlo simulation; the method comprises the following steps: designing an air route prediction model based on a Transform architecture, taking wind direction and wind speed expectation, wind direction and wind speed time sequence data and air route time sequence position data after future P seconds as input, processing the input data through a self-attention mechanism, capturing spatio-temporal characteristics, and finally outputting position, speed and course information of an aircraft at a future time node. By combining the airway data, the environment data and the future environment prediction information, richer environment information is provided for the airway prediction model, so that the accuracy and robustness of airway prediction are improved.

The invention provides a flight section flight flow statistical method based on a system flight path and a flight plan, and the method comprises the steps: reading original business data through a business data interface, and carrying out the analysis to obtain flight path data and flight plan data; performing track association on the track data and the flight plan data to obtain space position information and flight plan data of the aircraft, storing the space position information and the flight plan data in a database, extracting corresponding business data from the space position information and the flight plan data, and recording the business data in the database; the extracted service data at least comprises spatio-temporal information of all flight paths passing through a flight path section and a fixed point; and determining a flow statistical result according to the extracted service data, and displaying the flow statistical result. The invention further provides a corresponding system. According to the method provided by the invention, accurate tracking of the real-time position of the air route is realized through fusion processing and judgment of the flight path and the flight plan data; and in combination with setting of the auxiliary points, the flights actually flying over the specific flight section can be more accurately screened out, the judgment accuracy is improved, and the accuracy of flow statistics of the flight section is ensured.

The invention relates to the technical field of artificial intelligence, in particular to an urban air traffic-oriented mixed reality airway dynamic generation method, which realizes fusion of an aircraft image and an actual environment image by constructing an augmented reality navigation system and utilizing a sensing device group, an ultra-wideband positioning base station network and a ground computing device, thereby realizing the dynamic generation of a mixed reality airway. A dynamic three-dimensional city scene is presented, meanwhile, the position and attitude information of the aircraft is obtained, environment perception of the aircraft is achieved, an augmented reality navigation system is optimized, the attitude detection precision is improved, the airspace congestion distribution condition in the future time period is predicted, a dynamic variable height layer is generated, the flight path is optimized, and the flight energy consumption is reduced. The problem of multi-target optimization of a three-dimensional air route is solved through a hybrid optimization algorithm, the optimal air route is dynamically generated in a city three-dimensional scene, augmented reality visual display is achieved, a pilot is assisted in recognizing the relative position relation between the aircraft and the environment, the power consumption of augmented reality display equipment is reduced, and the positioning precision is improved.

The invention relates to a dynamically adaptive airway stabiliser (1) comprising: - a flow channel (2) for guiding the expired air of a patient, wherein the flow channel (2) has three successive flow channel portions (3, 4, 5) and the first flow channel portion (3) is in the form of a mouthpiece; - a measuring unit (9) for determining a measured value of the volumetric breathing flow in the second flow channel portion (4); - an adjustment element (12) for changing the flow resistance of the third flow channel portion (5); - an evaluation and control unit (11) for evaluating the determined measured value and for controlling the adjustment element (12).

The invention relates to the technical field of image processing, in particular to an anesthesiology department airway intubation image recognition method based on artificial intelligence. The method comprises the following steps: acquiring an airway CT image of a patient at double view angles, constructing a multi-curvature airway model and generating a corresponding image; correcting the model image in combination with the inherent distortion parameter of the lens to obtain a distortion corrected image; secondly, the influence of different curvatures on distortion is quantified under a multi-curvature distortion correction image, and a curvature-direction-distortion correction factor mapping relation is generated; acquiring a current airway image in real-time intubation, extracting curvature features by performing pixel-level matching with the distortion correction image, associating the curvature features with the mapping relation, and determining a distortion correction index corresponding to the current airway image; and finally, performing double correction on the current airway image by combining the lens distortion parameter and the distortion correction index, and generating a high-credibility airway correction image for subsequent image recognition.

The invention provides a low-altitude traffic operation control method and system based on moving block. The method comprises the following steps: layering an airspace according to aircraft type performance and service types for the vertical take-off and landing aircraft, and distributing corresponding entering and leaving areas according to flight height layers of the aircraft; quasi-moving block is introduced into a low-altitude traffic system, an air route network and operation rules are designed, a free area-buffer area-block area three-level space structure of an aircraft is dynamically constructed according to the state of the aircraft, when the front aircraft occupies a certain block area, the first area in front of the block area is a buffer area, and the second area in front of the block area is a block area. The second zone in front of the blocking zone is a free zone, the aircraft flies in the free zone according to the current speed, and the aircraft is selected for braking in the buffer zone according to the braking distance obtained through calculation. According to the method, the braking curve is generated by dynamically dividing'free area-buffer area-block area 'and combining the braking performance, so that the safety redundancy is increased, and the safety and airspace utilization rate is improved.

The invention belongs to the technical field of wind tunnel simulation, and provides multi-environment simulation wind field test equipment which is of an axial symmetry structure and comprises a pressure stabilizing cabin, an inner cabin and an outer cabin, the pressure stabilizing cabin and the inner cabin are installed in the outer cabin in an up-down stacking mode, and an airflow circulation channel is formed between the pressure stabilizing cabin and the inner cabin and the outer cabin; two groups of expandable horizontal air passage roller shutters are arranged in the inner cabin, when the two groups of horizontal air passage roller shutters are in an expanded state, the two groups of horizontal air passage roller shutters and two oppositely arranged cabin walls in the inner cabin are enclosed to form a rectangular horizontal air flow channel, and the rectangular horizontal air flow channel can be matched with the air flow circulation channel to provide a horizontal linear flow wind field; and when the two groups of horizontal air passage roller shutters are in a storage state, the air flow circulating passage can be matched with the inner cabin and the pressure stabilizing cabin to provide a vertical air flow field or a rotating air flow field. The simulation requirements of various complex wind environments can be effectively met in a limited space range.

Disclosed are a method of determining branching levels of a plurality of airway branch segment regions of an airway region, the method comprising: determining branching levels of a plurality of first airway branch segment regions of an airway region included in a medical image from a root to a first order based on anatomical structure information; and determining branching levels of a plurality of second airway branch segment regions of the airway region from a bottom level to the first order.

A back projection screen that allows the awake patient to move the head and neck freely and yet be able to look at the images that are displayed during surgery, but at the same time allows a surgery crew, in particular an anesthesiologist, to watch the airway passage and the consciousness state of the patient, and to monitor signs including color of the lips, eyes movement, verbal responses, skin sensitivity, and the like, as well as to maneuver for intubation or other procedures without removing the screen during surgery. The back projection screen allows also eye contact and / or face to face interaction, physically or virtually, with the surgeon or other members of the surgery team for effective communication and is suitable for easy cleaning or disinfection from bacteria or viruses as required by operating rooms.

The utility model belongs to the technical field of clamping devices, and particularly relates to a workpiece clamping, positioning and detecting device and a machine tool with the workpiece clamping, positioning and detecting device. The workpiece clamping and positioning detection device comprises an air tightness detection assembly, the air tightness detection assembly comprises a positioning reference surface matched with a to-be-clamped workpiece in shape, the positioning reference surface is provided with a plurality of air tightness detection ports, an air passage communicated with the plurality of air tightness detection ports is arranged in the air tightness detection assembly, and the air passage is communicated with the air tightness detection ports. An air inlet of the air channel is formed in the outer surface of the air tightness detection assembly; the workpiece clamping and positioning detection device further comprises a gas connecting assembly which can advance to be in airtight connection with the gas inlet or retreat to be separated from the airtight detection assembly. The air inlet is formed in the surface of the air tightness detection assembly, the air connecting assembly capable of moving forwards and backwards is connected with or separated from the air inlet in an air tightness mode, a rotary connector does not need to be applied, and operation is more stable.

The atomization device comprises a liquid storage bin, an atomization core assembly, an air channel piece and an air flow sensor, the liquid storage bin is provided with a liquid storage cavity, and one end of the liquid storage bin is provided with a mounting groove communicating with the liquid storage cavity; the atomizing core assembly is arranged in the liquid storage cavity and forms an atomizing channel, and the atomizing channel communicates with the mounting groove; the air channel piece is embedded in the mounting groove, the air channel piece is provided with an air inlet channel and an induction channel, the air inlet channel and the induction channel are communicated with the atomization channel, and the air inlet channel, the induction channel and the atomization channel are staggered with one another; the airflow sensor is arranged on the air channel piece and used for sensing air pressure signal changes of the sensing channel and outputting electric signals to the atomization device so as to control the atomization core assembly to work. According to the atomization device, the air channel piece is installed in the installation groove, so that the internal structure arrangement space of the atomization device product is reduced, the overall size of the atomization device is further reduced, use of a user is facilitated, and then the use experience of the user is improved.

The utility model discloses an atomizer and an atomizing device, and belongs to the technical field of electronic atomizing equipment. The atomizer comprises at least two oil bins, each oil bin is provided with at least two oil storage cavities which are isolated from each other, each oil storage cavity is internally provided with an atomization air channel, and in any two oil bins which are adjacently arranged in the first direction, at least one atomization air channel located in one oil bin is communicated with at least one atomization air channel located in the other oil bin; aerosol generated in the at least two atomization air channels is mixed and then output. According to the atomizer provided by the invention, each oil bin is provided with at least two oil storage cavities which are isolated from each other, so that the oil storage cavities are not communicated with each other, and the oil bins can store at least two atomizing matrixes with different tastes; the aerosol generated in the at least two atomization airways is output after being mixed, so that a user can experience the taste of the mixed aerosol generated by the atomization matrixes with different tastes, the taste of the aerosol is richer, and the user experience can be improved.

The utility model discloses a mould with a guide device, which comprises a rear mould, a plurality of terminal grooves are arranged on the rear mould, first mounting grooves are arranged in the terminal grooves, a limit hole is arranged on one side of each first mounting groove, second mounting grooves are arranged on two sides of each limit hole, second guide inserts are fixedly connected in the second mounting grooves, and the second guide inserts are fixedly connected in the second guide inserts. A first guide insert is fixedly connected into the first mounting groove; a base is fixedly connected to the lower surface of the rear mold, an air channel is formed in the upper surface of the base, electromagnetic valves are fixed to the two ends of the air channel in a communicated mode, and a first sealing ring is arranged on the outer side of the air channel; according to the utility model, the first guide insert and the second guide insert on the rear mold are used for guiding the terminal body, so that the terminal body can be accurately positioned in a groove, and a product cannot be adhered to the front mold during mold opening, so that the product is prevented from being deformed, and meanwhile, the product is automatically discharged during mold opening by additionally arranging the ejection assembly, and the production efficiency is improved. Therefore, the product taking process can be carried out stably.

Methods and systems for delivery of pulsated air to a user using a device including a flow generator to generate a continuous air flow, a first actuator comprising a pulsated flow delivery mechanism configured to generate a pulsated air flow from the continuous air flow based on a pre-determined duty cycle to vary a frequency of the pulsated air flow, a user interface configured to generate and deliver vortices of pulsated air to the user at the frequency of the pulsated air flow, and a set of tubing to couple the flow generator, the first actuator, and the user interface.

The invention relates to an electric aircraft high-temperature auxiliary cooling device and method and an electric aircraft. The first end of the main air passage is communicated with a to-be-cooled heat exchange target of the electric aircraft; the second end of the main air channel communicates with the first air inlet channel and the second air inlet channel. A gas outlet of the high-pressure low-temperature gas storage device communicates with the main gas channel through a second gas inlet channel, and the high-pressure low-temperature gas storage device is configured to release low-temperature gas with the temperature lower than the preset temperature value and make contact with an electric aircraft heat exchange target through the main gas channel. The radiator air inlet sensor is arranged at any one of the first end and the first air inlet channel and connected with the high-pressure low-temperature gas storage device. The cooling performance of the heat exchange target of the electric aircraft is ensured, and the heat management performance of a power system is always in a good state; a compressor refrigerating unit which is complex in structure, large in size and heavy in weight does not need to be adopted, and airflow entering the cooling system can be always in a low-temperature state only by matching the high-pressure low-temperature gas storage device with a pipeline.

The application provides a sleep mask for simulating a plateau environment, comprising a mask body, a mounting seat arranged on the mask body, a total air passage arranged on the mounting seat and being in communication with the outside world, and a flow resistance adjusting mechanism for adjusting the flow resistance of breathing air in the total air passage, wherein the flow resistance adjusting mechanism comprises a ventilation port arranged on an end wall of the total air passage and a flow resistance adjusting piece for adjusting the size of the ventilation port. The sleep mask for simulating a plateau environment can be used for simulating the sleep of a person in a plateau area at different altitudes. The sleep mask for simulating a plateau environment can adjust the opening of the ventilation port by the flow resistance adjusting piece during sleep, adjust the air amount entering the total air passage per unit time, and further adjust the total oxygen content inhaled by the person in each breathing cycle, so as to achieve the technical purpose of simulating the sleep in a plateau area at different altitudes in a normal altitude area.

The present disclosure relates to an electronic system for providing access to a useable, tailored database of selectable items for a user, e.g., user selectable routes entered by pilot users to utilize for flight planning and aircraft route guidance, and other related information from a remote processing center to a local unit over wireless, wire line, or telecommunications network or combination thereof. The disclosure more particularly relates, for example, to an electronic system including one or more remote processing centers and a plurality of local units, e.g., a desktop computer, laptop, tablet, cellular device, or mobile telephone unit, for providing to a pilot's local unit information of other pilot users from one or more databases, in particular, a pilot user's route with FAA identifiers (such as airports, VORs, NDBs, waypoints, reporting points, airways, etc.), waypoints, departure airport, destination airport, hazards, FAA VFR sectional and / or IFR airway map for guidance, pilot comments, and other information which has been calculated and / or stored at one or more remote processing centers in response to a query or selection request received from a local unit operated by an pilot user, for example.

The invention relates to the technical field of pressure compensation control, in particular to a simulated high-altitude pressure self-adaptive wounded emergency dynamic compensation device which comprises an air passage, an air bag, an air pump, a sensor node group and a self-adaptive regulation and control module. The self-adaptive regulation and control module is used for acquiring an environment pressure prediction value through an environment pressure prediction unit, generating an airway airbag safety dynamic compensation interval through a pressure dynamic compensation unit, and generating a regulation and control instruction through a regulation and control instruction generation unit; according to the air passage air bag safety dynamic compensation device, the air passage air bag safety dynamic compensation interval is generated, the air bag pressure is dynamically regulated and controlled in real time, and therefore the self-adaptive capacity and the use efficiency of the device are improved.

The utility model relates to the technical field of atomizers, in particular to an electronic atomizer which comprises a shell and a microphone, the microphone is arranged in the shell, a mist outlet channel, a first air guide channel, a second air guide channel and a groove are formed in the shell, and the mist outlet channel is communicated with the first air guide channel through the groove; the first air guide channel and the second air guide channel are arranged in a staggered manner and are communicated through a groove; two opposite ends of the second air guide channel are respectively communicated with the groove and the microphone; the grooves are communicated to realize a staggered structure of the second air guide channel and the first air guide channel, so that the blocking and filtering effects are achieved, impurities in the external environment are effectively prevented from directly invading, the microphone is protected from being damaged, the recognition sensitivity of the microphone is prevented from being reduced due to impurity invasion interference, and the working sensitivity of the microphone is improved.

The invention relates to aircraft path planning, in particular to a cross-city low-altitude aircraft path planning method based on a main air route and a dynamic queue, which comprises the following steps: pre-planning and solidifying a low-altitude main air route connected with a main city, and constructing an air route passing dynamic capability diagram; the priority of the aircrafts is identified, the aircrafts applying for the same low-altitude main air route and in the same time period are sorted according to the priority and the application time, a dynamic scheduling queue is generated, and an air route entering time slice and a sequence position in the air route are reasonably distributed for each aircraft; for an aircraft flying across the city, global trunk path planning is firstly carried out, and then local fine path planning is carried out; the access section path, the flight path section path and the access section path are spliced into a complete global flight path, and the global flight path is finely adjusted to deal with emergencies in time, so that flight safety and high efficiency are ensured; according to the method, the defects of unreasonable scheduling, relatively high computing power overhead and insufficient emergency response capability can be effectively overcome.

The invention discloses an atomization device, and belongs to the technical field of atomization devices. Comprising a support, a shell assembly and a first sealing piece, a containing cavity is defined by the support and the shell assembly, and the first sealing piece is arranged in the containing cavity and connected with the support in a sealed mode; the atomization device is provided with a main air channel and a sensor air channel, the support and the shell assembly define the main air channel, the support, the shell assembly and the sealing piece define the sensor air channel, the main air channel and the sensor air channel are independent from each other, and in the first direction, the end, close to the atomization bin, of the sensor air channel is located between the end, close to the atomization bin, of the main air channel and the atomization bin. The sensor air channel is physically isolated from the main air channel, aerosol, liquid drops or turbulent flow is prevented from directly impacting the sensor, the sensor air channel is higher than the main air channel, gravity settling and inertial separation are utilized, most atomized particles flow along the main air channel due to self weight and inertia, and the situation that atomized media, condensate and aerosol enter the sensor air channel is reduced; and the air passage of the sensor is prevented from being blocked.

The utility model relates to the technical field of prefabricated cabins, in particular to a prefabricated cabin with a drainage structure, which comprises a prefabricated cabin main body, a roof is mechanically fixed at the top end of the prefabricated cabin main body, and drainage mechanisms are mechanically fixed on two sides of the outer wall of the prefabricated cabin main body and the top end of the roof. A plurality of heat dissipation mechanisms are arranged on the two sides of the outer wall of the prefabricated cabin body, communicate with the interior of the prefabricated cabin body and are located on one side of the drainage mechanism. Rainwater at the top end of a roof can slide down through the drainage eave and is far away from the outer wall of the prefabricated cabin body through mutual cooperation of internal parts of the drainage mechanism, and rainwater can circulate in the upper air channel and finally drip into the lower air channel when entering the upper air channel through mutual cooperation of internal parts of the heat dissipation mechanism. And the rainwater is discharged from the interior of the prefabricated cabin main body from the lower air passage, so that the rainwater can be prevented from remaining in the prefabricated cabin main body to influence internal equipment of the prefabricated cabin main body.

The invention provides an air bag pressure linkage adjusting method and system based on airway peak pressure feedback, relates to the technical field of medical equipment control, and aims to solve the problems of control algorithm lag, lack of linkage mechanism, poor clinical practicability, insufficient safety redundancy and the like in the prior art. According to the method, on the basis of airway peak pressure values of a plurality of continuous breathing cycles, an air bag pressure target value is increased in a stepped mode one by one in the breathing cycles, and stable state judgment is synchronously conducted till the airway peak pressure is stable; in the stable maintaining stage, the airway peak pressure is continuously monitored, and if the rise exceeds a preset fluctuation threshold value, the current locking target value is taken as the reference to be increased step by step again according to the preset step length; and if the reduction exceeds the preset fluctuation threshold value, the target value is reset as the initial airway peak pressure, and step adjustment is performed again until the airway peak pressure is stabilized again. The problems existing in the prior art are solved, and dynamic cooperative adjustment of the airway peak pressure and the airbag pressure is achieved.

A gas turbine engine including a core air passage, a combustor, and a steam line. The combustor is located in the core air passage and combusts hydrogen fuel producing combustion gases. The steam line is fluidly coupled to the core air passage at a position downstream of the combustor to receive a portion of the combustion gases. A conduit thermally coupled to an external surface of an aircraft may be fluidly coupled to the steam line to receive the combustion gases and to heat the external surface. The gas turbine engine may also include a water vapor condenser fluidly connected to the steam line to receive the combustion gases and to condense the water vapor of the combustion gases. At least one nozzle may be fluidly coupled to the water vapor condenser to inject the condensed water into the core air passage.

The invention relates to an air tightness detection system, which is used for carrying out an air tightness test on air passages in an air passage board, and comprises a distance acquisition module, which is used for acquiring the distance between the air passages; the control module comprises a grouping unit and a judging unit; a distance threshold value is preset in the grouping unit, any two air channels within the distance threshold value are divided into different groups, and any two air channels outside the distance threshold value are divided into the same group; the detection module comprises detection channels of which the number is the same as that of the groups divided by the grouping unit, and each detection channel is correspondingly communicated with one group of air channels; each detection channel is provided with a first air pressure detection device, and the first air pressure detection device is used for detecting the air pressure value of the air channel where the first air pressure detection device is located; the judgment unit is provided with an air pressure threshold value in advance and judges the air tightness of the air channel where the first air pressure detection device is located by comparing the air pressure value detected by the first air pressure detection device with the air pressure threshold value. The air tightness detection system provided by the invention is high in detection efficiency, low in cost and good in reliability.

The application discloses a training method of a classification network, an image classification method, an electronic device and a computer readable storage medium. The training method comprises the following steps: obtaining a training set, each sample image sequence comprising a plurality of sample images; extracting a first feature of the sample image sequence by using a classification network, and obtaining a first processing result by processing the sample image sequence by using a segmentation network; classifying the sample image sequence based on the first feature and the first processing result by using the classification network, to obtain a first classification result, the first classification result being used for representing the category of an airway; and adjusting the parameters of the classification network based on the first classification result. In the foregoing manner, the accuracy of airway classification can be improved.