309 results about "Oxygen Consumptions" patented technology

The invention relates to the technical field of temperature regulation, in particular to an intelligent root temperature regulation system for hydroponic crops and an implementation method thereof, and the system comprises a root system oxygen consumption monitoring module, an osmotic pressure state monitoring module, a root system metabolism state analysis module, a root temperature parameter reconstruction module and a nutrient solution circulation linkage module. According to the method, the metabolic rhythm state of the root system is judged through oxygen consumption rate gradient difference calculation and trend analysis, the cell injury risk is recognized through two-parameter logic judgment by combining the osmotic pressure change amplitude and the oxygen consumption trend, and the target root temperature is selected through gray correlation analysis according to the abnormal triggering temperature and the stable state temperature; a regulation and control instruction is generated, a PID algorithm is called in combination with real-time circulation flow velocity data to adjust the pump speed, closed-loop dynamic matching of a root temperature set value and a flow velocity behavior is achieved, the adaptability of root temperature response is enhanced, the real-time regulation and control capacity for metabolic imbalance is improved, and the stability and the moisture and nutrient absorption efficiency of a water culture environment root system are effectively improved.

The invention relates to the field of coal mine exhaust control, in particular to a coal mine exhaust control method and device based on environmental perception. The method comprises the following steps: acquiring multi-dimensional monitoring signals based on environment sensing sensors at multiple positions of a mine, performing distributed sensing marking, and constructing a global gas concentration sensing graph; the method comprises the following steps: acquiring position information of operating personnel in real time based on a miner positioning sensor, performing short-time movement prediction on the operating personnel, and generating a miner movement prediction path; obtaining a coal mine internal structure chart, and carrying out average oxygen consumption rate budget and instantaneous oxygen supply demand calculation based on the miner movement prediction path to obtain oxygen supply demand indexes of each unit; and according to the oxygen supply demand index of each unit, intelligent exhaust power calculation adjustment is carried out, and a conventional exhaust control strategy is constructed. Ventilation efficiency of the coal mine area is improved, emergency blast treatment is carried out under the risk condition, the risk problem response capacity is greatly improved, and safety of the coal mine area is enhanced.

The invention discloses an oxygen consumption self-adaptive regulation and control method and system for a medical molecular sieve oxygen generation system, and belongs to the technical field of control. In the embodiment of the invention, demand dynamic fluctuation and environment change are dealt with through a data fusion and collaborative prediction mechanism, and meanwhile, the performance attenuation state of a molecular sieve is brought into an operation strategy optimization target; dynamic adaptation of oxygen demand prediction, performance evaluation and operation regulation and control is achieved, and the overall operation reliability and economical efficiency of the system are improved. Besides, the characteristics are combined to form a technical scheme for regulating and controlling the oxygen consumption of the medical molecular sieve oxygen generation system, the core of the technical scheme is to solve the coupling problem of demand fluctuation and environmental influence through a collaborative optimization mechanism driven by multi-source data, and technical support is provided for collaborative optimization of oxygen supply stability, equipment service life and energy consumption efficiency.

The invention discloses a soil oxygen dynamic prediction method for precision agriculture, and belongs to the technical field of soil oxygen prediction, and the method comprises the following steps: S1, collecting key parameters of different soil depths in a research area, and S2, calculating a soil oxygen diffusion coefficient according to the key parameters of different soil depths in the research area; s3, calculating the respiration rate of the soil root system; s4, constructing a soil oxygen consumption model; and S5, carrying out iterative calculation to obtain soil oxygen concentration distribution at different moments and different depths. The method can solve the problem that the oxygen concentration of the soil is influenced by complex factors such as moisture, temperature, porosity, root respiration and microbial activity, and provides a scientific basis for precise agricultural irrigation, soil health assessment and oxygenation irrigation strategy optimization.

The invention discloses a data and mechanism combined driving converter steelmaking oxygen consumption calculation method and system, and belongs to the technical field of converter steelmaking. Dividing the data into field measurable data and parameters which cannot be measured in real time (including key parameters which cannot be measured in real time and non-key parameters which cannot be measured in real time); inputting field measurable data into the parameter prediction model to obtain a key parameter prediction value which cannot be measured in real time and an oxygen consumption prediction value; an oxygen consumption mechanism calculation model is adopted, and the oxygen consumption is calculated according to the converter steelmaking production data; wherein the key parameters which cannot be measured in real time adopt model prediction values; and weighting the predicted value of the oxygen consumption and the calculated value of the mechanism calculation model to obtain an oxygen consumption calculation result. According to the method, the oxygen consumption in the converter steelmaking process can be accurately predicted, and the actual requirement for accurately controlling the oxygen consumption according to the input material and the control target is met.

The invention discloses an organic biomass aerobic fermentation oxygen supply control method based on multi-sensor fusion and state observation, and the method comprises the steps: arranging a temperature sensor, a humidity sensor, a pressure sensor, a flow sensor and a weighing device in a fermentation device, and collecting inlet and outlet air parameters and material temperature and mass in real time; the method comprises the following steps: dynamically calculating the moisture evaporation amount based on humid air science and mass conservation, estimating the fermentation heat release amount in combination with a heat balance model, fusing multi-source data through a Kalman filter, dynamically correcting the mass of organic matters and the state quantity of the heat release amount, and realizing accurate estimation of oxygen consumption without an oxygen probe; according to the method, through a residual driving weight adjustment mechanism, measured value correction is enhanced in the fermentation temperature rising period to avoid insufficient oxygen supply, model trust is enhanced in the stationary period to inhibit excessive aeration, closed-loop aeration control is achieved, the scheme gives consideration to energy efficiency, stability and suitability, and oxygen supply accuracy and fermentation efficiency are remarkably improved.

The invention discloses an aircraft oxygen load distribution method based on a dynamic database, and relates to the field of aviation system engineering and control engineering, and the method comprises the steps: building a digital twin model through simulation software, obtaining the current state of aircraft oxygen, presetting the oxygen demands at different flight stages, and obtaining a digital twin model; performing multi-physics field coupling optimization on the digital twin model through an optimization algorithm, feeding back an optimized result to a dynamic database to obtain an oxygen distribution scheme, training an oxygen demand model by utilizing a federated learning technology, predicting oxygen demand in a future flight stage, and designing and deploying a self-repairing mechanism according to a prediction result; according to the method, the oxygen consumption condition is monitored in real time through the dynamic reconstruction algorithm, and the oxygen distribution scheme is intervened and optimized when it is detected that the oxygen distribution scheme is not matched with the oxygen consumption condition, so that the requirements of emergencies are met, and the error-tolerant rate and the reliability are greatly improved.

The invention discloses a soil risk assessment method for a red-soil rice field, particularly relates to the field of soil risk assessment, and aims to solve the problems that an existing method cannot accurately identify the hypoxia risk below a plough layer and the influence of the hypoxia risk on a root system. The method comprises the following steps: constructing a joint monitoring mechanism of heat flux and oxygen concentration, extracting metabolic heat release power and an oxygen consumption trend, identifying a reduction dominant region below a plough layer, fitting a space boundary of the reduction dominant region, and establishing a three-dimensional distribution diagram of an oxygen deficit dominant region; the method comprises the following steps: extracting an overlapped space boundary of a root zone and an anoxic zone in combination with a crop root system distribution condition, analyzing a contour expansion rate and a root zone change characteristic in a continuous monitoring time period, and constructing a soil degradation trend identification parameter set; and finally, performing score mapping on the parameter sequence according to a preset degradation judgment weight, generating a soil degradation risk grade map covering the whole red soil rice field region, and having a soil risk expression capability with high spatial resolution and high judgment precision.

There is provided a device for measuring a person's ventilation including oxygen consumption. The device includes a sensor assembly. The device includes a breathing conduit through which at least one exhalation is received. The device includes a dehumidification cartridge configured to receive a sample amount of said exhalation from the breathing conduit, dehumidify the sample amount of said exhalation, and direct the sample amount of said exhalation so dehumidified to the sensor assembly. The dehumidification cartridge includes a dehumidification conduit having a proximal end at said sensor sampling port and which extends from the sensor sampling port towards the sensor assembly. The dehumidification cartridge includes a dehumidification chamber enclosing the dehumidification conduit. The dehumidification chamber is shaped to promote a flow of air therethrough. The dehumidification cartridge is shaped to facilitate for sanitary purposes, periodic replacement of either or both of the replaceable dehumidification cartridge and the dehumidification conduit thereof.

Methods, apparatuses, and systems for mechanically releasing a predetermined amount of supplemental oxygen to a user via a mechanical initiator are disclosed with the release of the amount of supplemental oxygen based on and in response to the combined factors of a user's determined oxygen consumption based on sensing a user's inhalation combined with determining the ambient pressure in the area of the user.

The invention discloses a patient transfer intelligent monitoring platform based on the Internet of Things and the intelligent wearing technology, and relates to the technical field of transfer intelligent monitoring, and the platform comprises an intelligent wearing equipment module which is used for carrying out the time sequence collection of physical sign data in a transfer process, and obtaining a physical sign monitoring data sequence; the medical equipment interconnection module is used for carrying out simultaneous multi-terminal data acquisition; the data transmission network module is used for determining an infusion pump infusion speed analysis result, a physical sign abnormal mode analysis result, a monitoring terminal abnormal mode analysis result and an oxygen consumption reserve analysis result; and the alarm and display module is used for graded alarm and shared display of the electronic handover bill. The technical problems that in the prior art, continuous dynamic monitoring cannot be achieved in the transferring process of the invasive mechanical ventilation patient, the early warning capability is lacked, and handover communication is not smooth are solved, and the technical effects that physical sign data and medical equipment parameters in the transferring process of the patient are collected in real time, and transferring monitoring continuity and handover efficiency are improved are achieved.

The invention belongs to the technical field of microbial fermentation engineering, and provides a monascus immunity enhancing effect fermentation optimization system and method based on data analysis, and the method comprises the following steps: a multi-source data edge preprocessing module deploys a sensor to collect dissolved oxygen, temperature and other data, and performs edge calculation filtering normalization to obtain an edge data preprocessing module; the thallus oxygen uptake rate prediction model training module establishes an oxygen uptake rate prediction model based on historical data by using LSTM in combination with an attention mechanism, and RMSE is less than 5%; the dissolved oxygen dynamic control strategy module fuses MPC and fuzzy control, the ventilation capacity and the stirring speed are dynamically adjusted according to predicted oxygen consumption, the control period is 30 seconds, an execution mechanism and a feedback correction module execute control through a mass flow controller and the like, and model parameters are corrected according to DO deviation; the whole-process closed-loop optimization module is provided with dual early warning, control parameters are updated based on a Bayesian optimization algorithm, the system achieves accurate control over dissolved oxygen in the fermentation process, and the monascus biomass and the yield of active ingredients are increased.

The invention relates to the technical field of early warning and monitoring, in particular to a deep groundwater supplementation data analysis and early warning system which comprises a signal processing module, an oxygen consumption analysis module, a nitrogen transmetabolism module, a risk identification module and a coupling optimization module. According to the method, the metabolism trend is analyzed by synchronously collecting underground multi-depth chemical indexes and removing noise, establishing a unified time sequence data set, extracting dissolved oxygen, nitrate and ammonia nitrogen concentration change characteristics, calculating the oxygen dissipation rate and constructing the time-depth distribution relation, and combining nitrogen conversion rate regression. A risk section is identified according to the directions of oxygen dissipation increase and metabolism decrease, the micro-potential gradient and coupling index change are further analyzed in combination with an electrochemical change rule, dynamic identification and risk early warning of the deep groundwater refilling process are achieved, and monitoring is changed from static data comparison to multi-dimensional dynamic analysis. The accuracy and the timeliness of abnormal recognition are improved, and the complement safety and the continuity and the reliability of data results are guaranteed.

The invention relates to the technical field of medical monitoring, in particular to a patient cardiopulmonary function monitoring system and method and a computer readable storage medium, the monitoring system comprises a breathing machine, a pulmonary membrane oxygenation device, a first monitoring module and a second monitoring module, and the breathing machine comprises a breathing circuit, a processing module and a display module; the pulmonary membrane oxygenation equipment comprises an oxygenator; the first monitoring module is used for monitoring carbon dioxide exhaling parameters in gas exhaled by a patient in real time; the second monitoring module is used for monitoring carbon dioxide discharge parameters in gas discharged by the oxygenator in real time. By means of real-time monitoring of exhaling parameters of carbon dioxide in gas exhaled by a patient and discharging parameters of carbon dioxide in gas discharged by an oxygenator, continuous monitoring of the change condition of the cardiac function and / or the lung function of the patient is achieved, oxygen consumption of the patient can be truly reflected, parameter adjustment of a breathing machine and lung membrane oxygenation equipment is facilitated, and the patient experience is improved. And guidance is provided for turning of the pulmonary membrane oxygenation equipment.

To provide a dissolved oxygen consumption measuring device capable of efficiently measuring dissolved oxygen consumption of a number of samples and being easily downsized.SOLUTION: A dissolved oxygen consumption measuring device 1 includes: a container 2; a sample liquid supply channel 7 that supplies a sample liquid; an air supply channel 8 that supplies an aeration air; a supply nozzle 10 that supplies a fluid selectively supplied from the sample liquid supply channel 7 and the air supply channel 8 into the container 2; and a dissolved oxygen sensor 4 that detects a dissolved oxygen concentration of the sample liquid supplied to the container 2.SELECTED DRAWING: Figure 1

Systems and methods are provided for comprehensive in vivo nanotoxicity testing, as well as fabrication methods of chips used for nanotoxicity testing. A three-dimensional (3D)-printed, automated microfluidic chip can be configured for in vivo nanotoxicity testing, and the chip can allow for multi-route (e.g., waterborne and / or foodborne) exposure of marine organisms to small materials (e.g., plastics such as microplastics and / or nanoplastics (NPLs), or metals), providing real-time, in situ monitoring of bioaccumulation and oxygen consumption.

The invention discloses a compound for flue gas deoxidation and a flue gas deoxidation method, and relates to the technical field of flue gas treatment for preventing spontaneous combustion injection of residual coal in a goaf. The compound comprises coal semicoke and a composite metal oxide which are mixed, wherein the composite metal oxide comprises CoO and CuO in a mass ratio of 7: (2.5-3.5); the compound is combusted through a fixed bed, and flue gas generated by combustion is deoxidized; when the coal semicoke is used for catalytic combustion deoxidation, CoO and CuO in a certain proportion are added, so that the oxygen consumption rate is high, the CO generation amount and the CO concentration are low, the ignition point is reduced, and the comprehensive effect is good; the problem that the concentration of O2 and the concentration of CO in the flue gas are too high when the flue gas is injected into an underground goaf is solved.

The invention belongs to the technical field of physical fitness detection, and discloses a riding exercise multi-dimensional physical fitness detection machine and a detection method thereof.The riding exercise multi-dimensional physical fitness detection machine comprises a support, a bicycle body fixed to the top of the support, and a physical fitness detection mechanism arranged on the bicycle body, an adjustable supporting rod and a supporting sleeve are fixedly arranged on a cross beam of the bicycle body, a telescopic hose is fixedly connected to the top of the adjustable supporting rod, and a communicated detection cover is fixedly arranged at one end of the telescopic hose. According to the invention, through the cooperation of the detection cover and the telescopic hose, during physical fitness detection, the detection cover is worn to realize the collection and detection of inhaled and exhaled gases, the oxygen consumption and carbon dioxide output in the exercise process are calculated, the respiratory quotient calculation is completed, and the evaluation of aerobic exercise ability is comprehensively realized; the physical fitness detection range is expanded, and more comprehensive physical fitness detection data are obtained.

The invention relates to the technical field of flow control, in particular to an oxygen inhalation terminal flow balance control system which comprises a pressure distribution monitoring module, a flow regulation execution module, a terminal state judgment module, an instruction optimization adaptation module and an operation record acquisition module. According to the method, the pressure of multiple points in the oxygen supply pipeline is periodically collected, the change amplitude is analyzed, sensitive identification and state marking of flow abnormity are achieved, the accuracy and execution matching performance of flow adjustment are improved by combining the time point of equipment operation with time window matching of pressure fluctuation, and the flow adjustment accuracy is improved through a forward insertion rearrangement mechanism of a control instruction. According to the method and the system, priority issuing is guaranteed in a lagging scene, the adjustment response speed and the execution stability are enhanced, an adjustment process is recorded, accurate traceability and regulation and control quality evaluation of an oxygen supply terminal operation track are supported, and the regulation and control precision, the abnormity recognition capability and the overall controllability of system operation are effectively improved in a multi-terminal concurrent oxygen consumption scene.

The invention provides a vehicle-mounted oxygen supply system, a control method and a vehicle, an electronic control unit of the vehicle is respectively connected with an environment sensing module, a vehicle-mounted oxygen production device, an emergency oxygen production device and an oxygen supply terminal module, an oxygen outlet end of the vehicle-mounted oxygen production device is connected with the oxygen supply terminal module through a pipeline, the vehicle-mounted oxygen production device adopts a physical oxygen source, and the emergency oxygen production device adopts an emergency oxygen source. The emergency oxygen generation equipment adopts a physical oxygen source and / or a chemical oxygen source, and the vehicle-mounted oxygen generation equipment can be controlled to supply oxygen through the oxygen supply terminal module and / or the emergency oxygen generation equipment can be controlled to supply oxygen through the electronic control unit on the basis of internal and external environment information, collected by the environment sensing module, of the vehicle. The vehicle-mounted oxygen generation system can solve the problems that an existing vehicle-mounted oxygen generation system cannot be used under the power failure condition, the oxygen consumption severely exceeds the oxygen supply amount of the vehicle-mounted oxygen generation system, and oxygen cannot be supplied outdoors in a plateau, and therefore the multi-scene requirement of a user is met.

The application discloses an oxygen adjusting structure and a respiratory treatment device, and relates to the technical field of respiratory treatment devices, in particular to an oxygen adjusting structure and a respiratory treatment device. The oxygen adjusting structure comprises a shell, an air inlet arranged on one end of the shell and used for connecting an oxygen source, an air outlet arranged on the other end of the shell and used for connecting a patient end, and an oxygen adjusting mechanism arranged in the shell and connected between the air inlet and the air outlet and provided with a flow stabilizer. The flow stabilizer can effectively stabilize the oxygen flow, avoid turbulent flow of the oxygen flow, and make the oxygen flow flow smoothly in a short distance, thereby ensuring accurate measurement of the oxygen flow, effectively shortening the length of the air guide channel in the oxygen adjusting structure, providing guarantee for accurate measurement of the oxygen consumption, significantly reducing the distance between the flow regulator and the flow meter, effectively reducing the volume of the oxygen adjusting structure, and being more conducive to miniaturization and multifunctionalization of the respiratory treatment device.

One embodiment includes a respirator system that corrects oxygen sensor measurements, such as measurements derived from an oxygen sensor in a mixing chamber of an indirect calorimeter or oxygen consumption (VO2) monitoring device. In one example, an embodiment determines an inhaled oxygen fraction drift provided by a respirator and corrects a VO2 determination made by the system using a change or rate of change in the inhaled oxygen fraction over time.

The present application belongs to the field of smelting process, and particularly relates to a smelting process for reducing the content of ferrous oxide in slag. The present application effectively reduces the content of ferrous oxide in slag by optimizing the oxygen feeding time, adjusting the position of the oxygen lance, combining with the point-to-point injection of carbon powder and specific power supply process parameters, reduces the content of ferrous oxide to 13% to 17%, and also reduces the oxygen consumption, smelting cycle and smelting power consumption, the average oxygen consumption is 17.74 Nm 3 / t, the average smelting cycle is 49.0 min / oven, and the average smelting power consumption is 433.71 kWh / t, which greatly reduces the smelting cost. Due to the reduction of ferrous oxide in slag, a large amount of iron loss in the slag discharge process is avoided, which is of great significance for low-cost smelting of scrap steel in an electric furnace.

The invention discloses a recirculating aquaculture process optimization method and system based on digital twinning, and particularly relates to the technical field of aquaculture optimizing.The method comprises the steps that a high-precision sensor network is deployed in an aquaculture system and used for collecting key aquaculture parameter data in real time and recording aquaculture parameter data of a recirculating aquaculture system under different set parameters; constructing a digital twinborn model of the recirculating aquaculture system based on the preprocessed data, including an oxygen balance equation and a regression equation of the oxygen consumption rate, obtaining oxygen information in the recirculating aquaculture process, and determining the oxygen consumption rate of the recirculating aquaculture system by collecting the water flow direction in the recirculating aquaculture system and judging the fluctuation of the water flow direction. And by collecting suspended particles in the recirculating aquaculture system, determining water body information in the recirculating aquaculture process, constructing an aquaculture evaluation model and comparing and judging threshold values, determining whether an optimized early warning signal is generated or not, the aquaculture system is helped to be timely guided to adjust oxygenation equipment and water flow parameters, the aquaculture efficiency is improved, and loss is reduced.

The invention relates to the technical field of remote monitoring, and discloses a remote monitoring device for a wheelchair with an oxygen supply function, and the device comprises a collection module which is used for collecting wheelchair parameters, oxygen supply parameters and environment parameters; the reminding module is used for carrying out return reminding according to the wheelchair travel distance, the wheelchair position information, the oxygen consumption and the oxygen remaining amount; whether the driving speed can be increased or not is judged according to the historical wheelchair driving speed of the user, a driving speed adjusting value is calculated according to the historical wheelchair driving speed and the oxygen remaining amount, the user is reminded to adjust the current wheelchair driving speed according to the driving speed adjusting value, and the user is reminded to return again; performing return reminding according to the environment humidity and the environment temperature; and the alarm module is used for judging whether to carry out safety alarm or not according to whether the user returns or not and the return reminding times, and sending safety alarm information to the guardian communication equipment. According to the invention, autonomy and safety of a wheelchair user are improved, and burden of a guardian is reduced.

A respiratory monitoring system with improved detection of oxygen consumption is described. The system uses one or two mixing chambers and samples gases at selective locations for reliable detection of oxygen over extended periods of time with autonomous detection of calibration drift. The system can be used for indirect calorimetry and monitoring health of a subject.

The invention relates to the technical field of medical identification, in particular to a sleep apnea real-time monitoring and early warning system, which comprises an acquisition module used for acquiring PSG data of a target user from a sleep moment to a current moment; the determination module is used for determining all OSA events from the sleep moment to the current moment according to a spectrogram of respiratory effort waves and a spectrogram of airflow of a window corresponding to each moment in the PSG data; the determining module is further used for determining the blood oxygen consumption time period of the current OSA event; the determination module is also used for determining a trusted OSA event; and the early warning module is used for constructing an early warning model of the target user by using the PSG data of the credible OSA event, and performing sleep apnea early warning on the target user by using the real-time PSG data of the target user acquired in real time and the early warning model. According to the invention, the accuracy of OSA diagnosis is improved.

The invention relates to a capsule type oxygen cabin for animal experiments, which adopts a modular structure, comprehensively considers the influence of multiple factors such as temperature, humidity, pressure and oxygen concentration, and also considers the influence of breathing oxygen consumption of experimental animals and the influence of a first / second accommodating part, and on the basis, the first / second accommodating part is centrally controlled through a touch screen; according to the method, the combination of multiple modes can be realized, so that the climate conditions of different regions can be accurately, efficiently and stably simulated, and accurate and scientific guidance can be provided for the research on'high reflection ', the work and life of personnel in high and cold climate regions and the pathology research of hospitals. Besides, the electrical parts are classified and placed in the first accommodating part, the second accommodating part, the touch screen and the bearing part, so that the cabin body can be transparent and visual, and the electrical parts in the first accommodating part and the second accommodating part are convenient to overhaul through detachable connection between the first partition plate and the second partition plate and the first accommodating part and between the first partition plate and the second partition plate and the second accommodating part.

This invention belongs to the field of iron and steel smelting technology, specifically disclosing an automatic control smelting method for high-silicon and high-manganese molten iron converters with dual slag. The method includes: S1: preparing molten iron with the following conditions: temperature 1220-1400℃, silicon content 0.70%-0.99%, manganese content ≥0.60%, and the molten iron ratio controlled below 74%; S2: using a five-hole oxygen lance for blowing, with the lance lowered in stages during the initial blowing and ignition phases and the rapid oxidation period of silicon and manganese; S3: calculating the timing for slag removal based on the silicon content of the molten iron entering the furnace, and performing slag removal when the preset oxygen consumption is reached, discharging the highly oxidizing slag generated under high-silicon and high-manganese conditions; S4: a second lance lowering, using a phased mode for subsequent smelting; S5: throughout the blowing process, slag-forming raw materials lime, magnesium balls, and sintered ore are added in batches according to set nodes. This method achieves precise control of the slag removal timing through quantitative calculation, stabilizing the residual silicon content within the target range.

This invention discloses a device for regulating oxygen content in a photophytic aquatic body, comprising a culture tube equipped with a light source assembly, a pneumatic piston assembly at the bottom of the culture tube including a dual-function air pump for charging and suction, and a piston plate slidably disposed inside the culture tube; an air box at the top of the culture tube, equipped with a carbon dioxide introduction mechanism and an oxygen removal mechanism. The piston plate reciprocates to circulate the algal solution, facilitating the transfer of oxygen produced by microalgae photosynthesis into the air box. When the oxygen concentration in the air box exceeds a set value, the piston plate automatically accelerates its movement. This accelerated movement of the piston plate also triggers the oxygen removal mechanism to expel the oxygen produced in the air box more quickly, thus regulating the oxygen content and preventing excessive oxygen consumption and carbon dioxide production caused by excessively high oxygen-to-gas mixture concentrations in the air box.