51results about How to "Easy to Feedback" patented technology

The invention discloses a mirror image type industry linkage engine system and method based on a knowledge graph, and relates to the technical field of industry linkage engines, and the system comprises a data collection module which collects multi-industry data in multiple modes, and the cleaning accuracy is 90% or above; the knowledge graph construction module is combined from bottom to top and from top to bottom, and is used for distributed storage and block chain evidence storage; the industry mirror image model generation module is used for generating a model through machine learning, and the association accuracy is 95% or above; the linkage analysis and decision module is used for finding a linkage strategy through an intelligent algorithm; and the user interaction module has a graphical interface, is fast in response, can feed back optimization, and supports multi-language and VR / AR display. The system is accurate and efficient in data processing, integrates multi-source data to construct the knowledge graph, is deep and comprehensive in industry analysis, simulates industry relations to assist decision making, is intelligent and reliable in decision making support, provides strategies and evaluation, is convenient and friendly in user experience, improves interactivity through multiple technologies, promotes accurate decision making of enterprises, and promotes collaborative development and innovation of the industry.

The invention relates to the technical field of data analysis, in particular to an experience degree analysis method for an offline experience scene, and the method comprises the steps: obtaining the stay duration and interaction times of a target; identifying a to-be-monitored area and a temporary monitoring area; abnormal interaction is recognized, and the grid step length is adjusted; obtaining an experience score of the interactive device; the grid step size and the acquisition interval are adjusted to improve the experience score. According to the method, the behavior change of the target can be more flexibly adapted by dynamically adjusting the grid step length and the acquisition interval, so that the accuracy and the real-time performance of data acquisition are improved, the fluctuation condition of target experience can be acquired in different time periods based on analysis of historical data, a powerful basis is provided for subsequent site optimization and equipment improvement, and the method is suitable for popularization and application. According to the method, the exhibition attraction can be increased, scientific decision support is provided for venue managers, the exhibition effect is continuously optimized and improved finally, and the problem that exhibition experience output is fuzzy due to insufficient interaction data analysis is effectively solved.

The invention relates to the technical field of wetland ecological environment management, and discloses an ecological environment intelligent patrol monitoring system and method based on machine vision. The system comprises a wetland ecological environment air characteristic information display module, a tourist target wetland ecological vacation position positioning module and a tourist target wetland ecological vacation position route planning and navigation module. Coordinate information of a tourist target wetland ecological monitoring point is accurately collected through a position sensor, and coordinate information of a tourist target wetland ecological vacation optimal position in a wetland ecological vacation scenic area is intelligently analyzed in combination with a geographic information system. According to the method, the coordinate information of the wetland ecological vacation position of the tourist target is scientifically and accurately positioned based on the environment air characteristic parameters of the tourist target, and the functional diversity of environment management of the wetland ecological vacation scenic spot is improved.

The utility model relates to a kind of low-temperature rectifying device of synthetic ammonia release gas, including first nitrogen gas delivery main pipe, first nitrogen gas delivery main pipe is provided with first desorption gas delivery pipe, refrigeration gas delivery pipe, nitrogen compressor unit, turbine expander, first machine after heat exchanger, second machine after heat exchanger, first nitrogen gas delivery branch pipe and second nitrogen gas delivery branch pipe, turbine expander and the inlet end of refrigeration gas delivery pipe are communicated, and first nitrogen gas delivery branch pipe, second nitrogen gas delivery branch pipe and refrigeration gas delivery pipe are provided with main heat exchanger, and main heat exchanger is provided with first release gas delivery pipe, and first release gas delivery pipe is communicated with molecular sieve adsorption tank, and first desorption gas delivery pipe and first machine after heat exchanger are communicated, and first machine after heat exchanger is provided with second desorption gas delivery pipe, and second desorption gas delivery pipe is provided with electric heater.Energy consumption of electric heater can be reduced.The utility model is convenient to use, with extensive market prospect.

The utility model discloses an intelligent cleaning robot with a flexible anti-collision device, which comprises an intelligent cleaning robot main body, and a support framework is sleeved on the outer wall of the intelligent cleaning robot main body. When the flexible anti-collision intelligent cleaning robot is used, the outer wall of the intelligent cleaning robot body is sleeved with the supporting framework, and the elastic buffering effect of the anti-collision annular air bag pieces which are arranged at the top and the bottom of the supporting framework and are in the protruding state is utilized, so that the intelligent cleaning robot body can achieve good flexible anti-collision protection on dynamic obstacles; according to the intelligent cleaning robot, collision injury to people or animals caused by the intelligent cleaning robot can be avoided, an annular rubber strip is embedded in the outer side wall of an anti-collision annular air bag piece, an annular piezoresistor is installed in the annular rubber strip, when collision occurs, the anti-collision annular air bag piece is pressed in a certain direction, the resistance value of a corresponding area is changed, and the collision damage to the human body or animals is avoided. And the collision direction is positioned and the collision strength is determined by calculating and analyzing the current difference through the controller.

The utility model relates to an abrasive cloth winding device which comprises a supporting plate, two parallel carrier roller frames are arranged on the supporting plate, carrier rollers are arranged on the two carrier roller frames, universal wheels are arranged at the bottom of the supporting plate, and a positioning frame is arranged on the outer side of the supporting plate. The positioning frame comprises a first side plate, a second side plate arranged at one end of the first side plate, a third side plate arranged at the other end of the first side plate and bottom plates arranged at the bottom end of the first side plate, the bottom end of the second side plate and the bottom end of the third side plate, and a bubble type gradienter is arranged at the top of the first side plate. A plurality of balance adjusting devices are arranged on the outer side of the positioning frame, and each balance adjusting device comprises a limiting plate, a supporting foot base and an adjusting bolt. And the levelness of the wind-up roller is convenient to adjust and is easy to feed back. The utility model has the advantages of convenient use and wide market prospect.

This utility model provides a valve stem concealed ball valve, including a ball valve body. The ball valve body includes: a valve body with several equidistant mating sections arranged circumferentially at its tail end, each mating section having a threaded hole at its center, the axis of the threaded holes being parallel to the axis of the inner hole of the valve body; the mating sections can adjust the installation direction of the ball valve as needed to avoid positional interference; a ball, rotatably disposed in the inner hole of the valve body; a valve stem, rotatably connected to the valve body, one end of which is connected to the ball, and the other end of which protrudes from the valve body; and a valve cap, detachably connected to the valve body, which can cover the other end of the valve stem; the valve cap conceals the exposed part of the valve stem, protecting the ball valve from accidental opening and closing and preventing misoperation of the valve stem.

The invention discloses a remote pulse rate measurement system based on video images, and relates to the field of image communication technology. The remote pulse rate measurement system based on video images includes a video acquisition module, an image stabilization processing module, a motion correction algorithm module, and a real-time feedback and correction module. The acquisition module is used to acquire original image contrast, original sharpness, and original noise level parameters, capture continuous high-resolution video frames, and record the number of original video frames; the stabilized image processing module is used to analyze high-resolution video frames through a convolutional neural network model to predict pixel-level motion vectors, obtain predicted motion vectors, and obtain motion evaluation image stabilization evaluation values ​​through comprehensive analysis. Then, corresponding optimization measures are taken to solve the problem that motion artifacts caused by the head movement of the detected object or the movement of the camera affect the accuracy of pulse rate measurement.

The invention provides a red-blue confrontation-based large model agent autonomous iterative optimization method and system, and the method comprises the steps: building a customer agent as a blue party based on a large language model, obtaining user data from a plurality of channels, generating diversified customer portrait data, generating a dialogue test set containing diversified customer consultation test data, and carrying out the calculation of the dialogue test set. Taking the data as adversarial data for iterative optimization of the model; the method comprises the following steps: constructing a sales agent as a red party by using a preset first version prompt word, starting the red party and a blue party to carry out dialogue based on adversarial data, limiting a maximum dialogue round or taking a transaction conclusion as an exit condition, and carrying out quality inspection scoring and prompt word optimization direction prompting on the sales agent through a plurality of evaluation dimensions; inputting the first version cue word and the cue word optimization direction to a sales agent to obtain an optimized sales agent cue word; and repeating until the quality inspection score converges, and completing the iterative optimization process of the sales agent. According to the method, the sales conversion rate is remarkably improved, and the manual optimization cost is greatly reduced.

The invention relates to a code error feedback method combining static analysis and dynamic analysis, and mainly solves the problems of insufficient error feedback and low efficiency in an Online Judge system: reconstructing codes of correct and error versions, including alignment and renaming of variables, and rearranging statements on the premise of not influencing semantics; static and dynamic multi-level alignment is carried out, in the static alignment, an editing script with the minimum cost is calculated through a heuristic editing distance algorithm, an alignment block and a difference list are obtained, in the dynamic alignment, compiling execution is carried out on source codes of two versions, test cases which do not pass operation are dynamically printed through gdb, and execution track information of the test cases is dynamically printed through gdb; error positioning is achieved, data flow backtracking analysis and scoring are carried out on error positions, and error feedback is generated. The method has the characteristics of high execution efficiency, high accuracy and easier understanding of generated feedback, automatic feedback of error codes can be realized, and the learning efficiency of students in programming tasks is improved.

This utility model discloses a vehicle combination switch, relating to the field of vehicle switch technology. It includes a fluorescent material on the upper surface of the switch for nighttime visibility of the switch's surface icons. A mounting slot is provided inside the mounting base, and a press feedback component is installed inside the mounting slot. The press feedback component is located below the bottom of the switch. Pressing the switch triggers the press feedback component to obtain press feedback. In this utility model, pressing the switch causes the contacts to make contact, activating the circuit. The control module receives the signal and triggers the indicator light to remain illuminated. Pressing the switch again causes the contacts to make contact again, generating a signal. After recognizing the secondary trigger, the control module cuts off the power supply circuit to the indicator light, turning it off. The fluorescent material allows the driver to observe the white switch icons at night. For example, when the indicator light is on, the indicator light illuminates green, creating a color difference with other icons, thus providing better feedback on the icon's on / off status.

The utility model relates to the technical field of thermal insulation material performance testing equipment, and discloses a thermal insulation material performance detecting device which comprises a box body, a box door is rotatably connected to the middle position of the front end of the box body, and a control panel is fixedly arranged on one side of the front end of the box door. A pair of first electric sliding rails are symmetrically and fixedly arranged on the side walls of the two sides of the interior of the box body, and first electric sliding blocks are arranged at the upper ends of the multiple pairs of first electric sliding rails in an electric limiting and sliding mode. According to the thermal insulation testing device, when the thermal insulation testing device is actually used, a high-precision temperature measuring structure is arranged, so that the thermal insulation testing device can conveniently adjust the temperature measuring position for a thermal insulation test of a testing material, and the accuracy of a testing result is ensured; and the device can carry out adaptive adjustment clamping on materials of different models and sizes, and the clamping adaptability of the device is improved.

The application discloses a control method and device of a touch panel, equipment and a computer storage medium, relates to the technical field of panel control, and comprises the following steps: acquiring a force-vibration coupling model of the touch panel, wherein the force-vibration coupling model is a corresponding relationship model between pre-pressure and vibration established for the structure of the touch panel; acquiring pre-pressure information of the touch panel, determining vibration characteristic parameters according to the pre-pressure information and the force-vibration coupling model; and controlling the touch panel according to the vibration characteristic parameters. The application improves the feedback effect of the touch panel.

The present invention relates to the field of data communication technology, and in particular to a data communication system and a communication method thereof, wherein the data communication system comprises: a CPU, a master IC module, a slave IC module and a counting module. The present invention enables one time to represent the transmission of 4 bits of data by adding a code reduction unit, a decoding unit, a counting unit, a counting detection and verification unit and a bit comparison unit, which greatly saves the time for the CPU to process data, and because the transmission volume is small at one time, it can greatly reduce the CPU's occupancy time and improve the data communication rate in many aspects; only according to the demand, the corresponding enable signal line is enabled, which can perfectly avoid the data loss during the transmission process, and through the processing of the code reduction unit and the decoding unit, the conversion is performed between 16 lines and 4 lines, which solves the problem that the data communication enable signal lines are too many and complicated during chip layout and wiring.

Embodiments of the present application provide a channel state information feedback method, device, communication equipment and storage medium. The method comprises: a terminal device sends first information to a network device, wherein the first information at least comprises: indication information of a channel state information (CSI) feedback method, or error information of different CSI feedback methods and the number of bits required for CSI feedback, or the number of bits required for CSI feedback corresponding to a CSI feedback method meeting a requirement.

The invention discloses a control method and system of an intelligent physical therapy health care bed, relates to the technical field of equipment control, and aims to reduce the abnormality of physiological sign data as an optimization target, optimize a massage path by using a pre-trained genetic algorithm, and execute the optimized massage path by a physical therapy bed, so as to improve the physical therapy health care efficiency. A risk value is generated according to the abnormal state of the physiological sign data of the user, if the risk value exceeds a risk threshold value, the current massage strength and rhythm are optimized, after feedback data of the user is collected, an existing massage mode library is updated in a new massage mode, and the health state of the user is evaluated according to the sign feedback data. If the health state is in a descending trend, generating a health report for the user and constraining a pushing interval of the health report; and providing a corresponding maintenance scheme for the physiotherapy couch through the physiotherapy couch fault maintenance knowledge graph. Verification and evaluation of the massage physiotherapy effectiveness of the physiotherapy couch are realized, and targeted treatment can be carried out when an expected effect is not obtained.

A network parameter set information transmission method and apparatus, a terminal, a base station, and a storage medium. The method comprises: obtaining at least one neural network parameter set (110); selecting at least one of the neural network parameter sets according to channel characteristics (120); and transmitting network parameter set information corresponding to the selected neural network parameter set (130).

The invention discloses a microgravity simulation device and method. The device comprises a mounting base, a vertical mounting bracket, a universal ring group and an experimental platform, the mounting base is used for providing a stable mounting and operation base for microgravity simulation; the number of the vertical mounting brackets is two, and the vertical mounting brackets are arranged at the two ends of the mounting base and are used for mounting the universal ring group; the universal ring group comprises an external universal ring, a middle universal ring and an internal universal ring and is used for providing a three-dimensional rotating environment for an object to be tested; an experiment platform is mounted on the internal universal ring; the experiment platform is used for providing an installation space for an object to be tested.

The utility model belongs to the technical field of electronic accessories, and discloses a touch panel support module. The touchpad support module comprises a touchpad watchcase and a touch PCB, the touch PCB is pasted on the front face of the touchpad watchcase, an upper support is pasted on the front face of the touch PCB, the upper support is provided with an elastic mechanism and a male buckle, a fixing support is arranged on the front face of the upper support, and the male buckle is provided with a female buckle. Buffer rubber is arranged between the fixed support and the upper support. According to the touchpad support module, the supporting spring, the spring mounting part and the spring positioning part which are arranged on the elastic mechanism are used in cooperation, so that assembly of the touchpad is simpler, on one hand, the production cost of the touchpad is effectively reduced, and on the other hand, the stability of the touchpad is higher when the touchpad is used through elastic force generated by deformation of the supporting spring; the use is convenient.

The invention discloses an atmospheric environment intelligent monitoring system, and relates to the technical field of atmospheric monitoring, and the system comprises the following modules: a data collection module which sets a monitoring period, and obtains the hydrogen sulfide concentration in a monitoring range of a monitoring station by taking the monitoring period as a time interval; a monitoring range of a monitoring station is divided into a plurality of monitoring areas including an industrial area, a sewage area and a landfill area, and an industrial coefficient, a sewage coefficient and a landfill coefficient are obtained by combining the specific hydrogen sulfide concentration condition of each area and the hydrogen sulfide concentration condition in the whole monitoring range; therefore, the pollution source with serious hydrogen sulfide pollution can be subjected to key monitoring and rectification warning subsequently according to the industrial coefficient, the sewage coefficient and the landfill coefficient, the purposiveness and practicability of atmospheric monitoring can be improved, and the linkage of targeted intelligent management of the monitoring result and the pollution source can be improved.

The invention discloses a main transformer multi-mode detection device, and relates to the technical field of main transformer detection equipment, the main transformer multi-mode detection device comprises hardware and software, the hardware comprises a detection device main body, a digital display board, a connecting cable, a connecting piece, a stabilizing mechanism and a limiting piece, the software comprises a control unit, and a mounting groove is formed in the detection device main body. A mounting groove is formed in the detection device body, a detector is arranged in the mounting groove, a stabilizing mechanism is mounted between the detector and the detection device body, connecting pieces are fixedly connected to the two sides of the lower portion of the detector, the connecting pieces are detachably connected with limiting pieces, and three-phase connecting cables are fixedly connected to the sides, away from the connecting pieces, of the limiting pieces; according to the device, a rotating block is rotated to drive an adjusting block to turn over along a rotating shaft of a second mounting frame, the position of the adjusting block in a transmission groove is changed, meanwhile, when the adjusting block moves, a first transmission wheel is driven to turn over, so that a driving wheel is driven to be matched with a three-phase connecting cable, the three-phase connecting cable moves vertically, and a limiting piece is stressed to be matched with a connecting piece.

The invention relates to the field of PLC state control, in particular to a PLC-oriented state space model-based optimization control method and system, and the method comprises the steps: (I) obtaining environment monitoring data collected by a PLC control cabinet, and defining a state space equation; (II) the PLC divides and generates an offline block, an online block and a function operation block according to the collected environment monitoring condition; (III) constructing a model according to the environmental monitoring data, and writing a function block at the same time to realize discretization of an environmental state space equation; (IV) initializing the parameters of the controller again, turning on the trigger switch, starting the operation of the controller, and realizing the transmission of the action instruction of the controlled object; and (V) if the controlled object feeds the working data back to the controller, a function block is calculated, working environment parameters are changed, the step (I) is repeated, and a system control closed loop of the PLC is realized. The method has the characteristics that the PLC system is more convenient to control, adjust and maintain, and the operability and the maintenance cost of the system are reduced.

The application discloses an intelligent visual projection method and system suitable for optical imaging, wherein the system comprises a visual stimulation control module for setting a visual stimulation control signal; an image output module for generating full-spectrum visual stimulation and light intensity according to the visual stimulation control signal; a spectrum switching module for receiving the full-spectrum visual stimulation and the light intensity and outputting first specific spectrum visual stimulation; an infrared light source module for outputting infrared spectrum visual stimulation; a spectrum processing module for filtering preset green spectrum signals of the first specific spectrum visual stimulation and integrating the infrared spectrum visual stimulation to output second specific spectrum visual stimulation; and an image stimulation focusing module for fine-tuning the projection area and light intensity of the second specific spectrum visual stimulation and projecting the second specific spectrum visual stimulation to a visual tissue region. The application can solve the problem that the prior art cannot meet the research demand of visual neural optical signals and has the characteristics of intelligence, automation, precision and no optical pollution.

The utility model discloses an impregnation tank device with a liquid control function. The impregnation tank device comprises a tank A used for soaking workpieces, a tank B used for recycling overflowing liquid of the tank A, and a liquid level sensor used for detecting liquid at the bottom of the tank B, one extension edge of the top of the groove A is provided with an overflow notch, and the other extension edges are higher than the overflow notch; one extension edge of the top of the groove B is connected with the overflow notch, so that liquid overflowing from the groove A flows into the groove B from the overflow notch; a mounting hole is formed in the groove bottom of the groove B, and the liquid level sensor is arranged in the mounting hole in a penetrating manner. The overflow notch structures of the tank A and the tank B are improved, and the position of the liquid level sensor is designed, so that the whole liquid control structure is simpler and more direct, the impregnation liquid in the tank A flows into the bottom of the tank B after overflowing and is in contact with the liquid level sensor, the impregnation liquid injection of the tank A can be directly controlled, the reaction sensitivity is higher, the impregnation quality is high, and the overflow delay feedback of the tank A is avoided.

The present application discloses a method and device for generating TEOAE feedback signals based on software simulation, which belongs to the field of acoustic signal processing technology, including: preprocessing the audio signal received by the audio input device, and determining the intensity of the stimulus signal according to the preprocessed audio signal; searching for the feedback intensity value matching the intensity of the stimulus signal in a preset feedback intensity relationship table; calculating the output signal value intensity according to the feedback intensity value, and setting the waveform type and waveform parameters of the output signal; generating an output signal, and evaluating the feedback effect according to the output signal; if the evaluation result shows that the feedback effect does not reach the set target, adjusting the feedback intensity relationship table and the waveform parameters and re-evaluating the feedback effect until the feedback effect reaches the set target. The present application can generate a TEOAE feedback signal containing a specific frequency component, and adjust the SNR value of the frequency point according to user needs, thereby improving the accuracy and reliability of the hearing test.

The application discloses an integrated fireproof high-low voltage switch cabinet and relates to the technical field of switch cabinets. The integrated fireproof high-low voltage switch cabinet comprises a base, an outer shell body installed on the upper surface of the base, and a switch cabinet body. The switch cabinet body is fixed inside the outer shell body, and a fireproof plate is fixed on the back side of the switch cabinet body inside the outer shell body. When a fire occurs in the switch cabinet body, a smoke sensor is installed at the air outlet of the switch cabinet body to monitor the fire condition, and the fire signal is further fed back to a controller. The controller controls the closing assembly to close, so that the switch cabinet body is in a relatively sealed state, the oxygen supply is isolated, the electromagnetic valve is opened by the controller, the branch pipeline is opened, the heptafluoropropane in the heptafluoropropane extinguisher enters the switch cabinet body, and the fire in the switch cabinet body is extinguished, thereby reducing economic losses.

The utility model relates to a concrete coarse aggregate screening device which comprises a belt conveyor, the belt conveyor comprises a conveying belt, an outer support is arranged outside the belt conveyor, a material storage bin is arranged on the outer support, a first discharging port is formed in the bottom of the material storage bin, an inserting plate butterfly valve is arranged on the first discharging port, and a buffering bin is arranged on the outer support. A screening bin is arranged on one side of the buffering bin, a second discharging port is formed in the screening bin, fixed limiting rings are arranged on the second discharging port and the screening bin correspondingly, a movable limiting ring is arranged on each fixed limiting ring, a screening cylinder is arranged on the multiple movable limiting rings, and a first driving shaft is arranged in the screening cylinder; and transmission connecting rods are arranged on each fixed limiting ring and the first driving shaft correspondingly, third discharging ports are formed in the buffering bin and the screening bin, a second driving shaft is arranged in the buffering bin on the side, away from the screening bin, of the third discharging ports, and an auger is arranged on the second driving shaft. The utility model has the advantages of convenient use and wide market prospect.

The utility model relates to an automatic crankshaft polishing device based on self-adaptive pressure control, which belongs to the technical field of machining and particularly comprises a machine tool body, a polishing frame guide rail is mounted on the machine tool body, and a polishing belt component is mounted on the polishing frame guide rail; the polishing belt assembly comprises a fixing clamp, a polishing frame and a polishing belt, the polishing frame is installed on the polishing frame guide rail through the fixing clamp, a pressure detection device is installed on the polishing frame, the polishing belt is installed on the pressure detection device, and a laser scanner is further installed at the front end of the polishing frame. The laser scanner and the pressure detection device are respectively used for being connected with a machine tool controller. The polishing device is simple in structure, convenient to use and capable of monitoring the polishing force in real time and dynamically adjusting the feeding amount according to the annular force measurement sensor.

The present invention discloses a PDC drill bit tooth simulation cutting experimental device, including: a main structure, which includes: a loading cylinder barrel, a confining pressure cavity is formed therein, and a confining pressure injection interface is sealed at the bottom end; a peripheral sleeve is provided with a heating sleeve; a pressure-bearing straightening cylinder, which is sealed and arranged at the top of the loading cylinder barrel, an axial pressure loading mechanism, including an axial pressure loading cavity sealed and fixed in the pressure-bearing straightening cylinder, a PDC piston loading rod in sealing contact with the axial pressure loading cavity and relatively movable, a detection component and a test tool for connecting the test tool are arranged at one end of the PDC piston loading rod, and the detection component includes a uniaxial load sensor and a temperature sensor; a bearing frame, which is used to protect and fix the main structure; a cylinder lifting mechanism, which is installed and fixed by the bearing frame and is used to drive the confining pressure cavity to move axially; a sample clamping tool, which is arranged in the confining pressure cavity for installing a core sample; and a data acquisition and processing system, which is used to be electrically connected to the detection component. The present invention has various and rich functions.

The utility model provides an air particulate matter content detection device which comprises a detection shell, a turbofan is rotationally assembled on the top of an inner cavity of the detection shell through a bearing, the bottom of the turbofan is connected with a sweeping support in a U-shaped support structure shape, side sweeping cotton is arranged on the outer side of a side supporting rod of the sweeping support, and the side sweeping cotton makes contact with the inner cavity wall of the detection shell. Lower cleaning cotton is arranged on a bottom supporting rod of the cleaning support and makes contact with the thick protective net. The rotor is powered on to drive the turbofan to rotate, when the turbofan rotates, airflow flows from top to bottom, external environment air is filtered by the fine filter screen and enters the detection shell, and the side cleaning cotton arranged on the cleaning support sweeps dust adhering to the inner cavity wall of the detection shell. And lower cleaning cotton arranged at the bottom of the cleaning bracket sweeps dust adhering to the coarse protective net, and the dust is discharged along with airflow, so that the inner cavity of the detection shell is cleaned, and the accuracy in the air detection process is ensured.