231 results about "Carbon dioxide content" patented technology

Disclosed herein are systems and methods for monitoring at least one volatile breathing compound in respiratory gases of patients. A device includes a patient respiratory gas interface coupled via a connector to a gas sampling line. The line includes a first channel for conducting a predetermined flux of respiratory gases from the interface to an inlet of a sidestream gas monitor, which monitors carbon dioxide (CO2) content. A pump facilitates gas flow through the device and the monitor. An outlet of the monitor is coupled to a second channel for conveying gases away. A valve controls passage of respiratory gas from the monitor via the second channel by connecting or disconnecting the flux to / from at least one volatile breathing compound detector, which monitors compound content. A control unit monitors CO2 values and uses this as a signal to control the valve, enabling compound monitoring or bypass based on CO2 content.

The invention relates to the technical field of control, and discloses an oxygen supply dynamic regulation and control method, system and device for a plateau district and computer equipment, and the method comprises the steps: carrying out the first-stage oxygen supply for an indoor room through a first oxygen supply operation corresponding to a first oxygen supply flow under the condition that there is no person in the indoor room; after the indoor real-time oxygen content reaches the target oxygen volume fraction, if people move in the indoor room and the indoor room is in a ventilation state, second-stage oxygen supply is carried out on the indoor room through second oxygen supply operation corresponding to second oxygen supply flow, so that the indoor real-time oxygen content is kept stable at the target oxygen volume fraction; and the second oxygen supply flow is corrected by using the number of indoor people, the indoor activity type and the indoor real-time carbon dioxide content which are monitored in real time, and the difference value between the indoor real-time oxygen content and the target oxygen volume fraction is kept within the target threshold value range. Finally, the oxygen supply regulation and control method for dynamically controlling the indoor oxygen supply flow of the plateau area based on the environment parameter data monitored in real time is achieved.

The invention provides a range switching type carbon dioxide content analysis device and method. The measuring range switching type carbon dioxide content analysis device comprises a detection pipeline, an infrared light source and a measurement light filter are arranged at the gas inlet end and the gas outlet end of the detection pipeline respectively, two or more detection modules with different carbon dioxide detection measuring ranges are arranged on the outer side of the measurement light filter, an adjustable light barrier is arranged in the detection pipeline, and the adjustable light barrier is arranged on the outer side of the measurement light filter. And infrared light emitted by the infrared light source is switched among the more than two detection modules through the measurement optical filter by adjusting the adjustable light barrier so as to output detection data of a corresponding detection range. According to the range switching type carbon dioxide content analysis device and method, the proper detection range can be selected to detect the carbon dioxide content, the detection precision is high, and the requirements of different application scenes can be well met.

The invention discloses a natural gas calorific value test result correction method, system, equipment and medium, and relates to the technical field of natural gas analys.The method comprises the steps that according to the initial calorific value, the carbon dioxide content and the relative density obtained through testing and pressure data and temperature data of a test point, the first nitrogen content is obtained through calculation based on an S-GERG88 state equation; calculating a first calorific value by using the first nitrogen content and the initial calorific value, and performing iterative calculation according to the first calorific value to obtain a second nitrogen content until the absolute value of the difference between the second nitrogen content and the first nitrogen content is smaller than a preset value; determining the first calorific value corresponding to the obtained second nitrogen content as a target calorific value; through an iterative algorithm, the accuracy of a natural gas calorific value test result and a natural gas working condition compression factor calculation result through the laser absorption spectrometry can be greatly improved, and then the path reliability and applicability of natural gas energy metering through the laser absorption spectrometry are improved.

The invention discloses a plant growth monitoring system, and relates to the technical field of plant growth monitoring, and multi-parameter monitoring equipment in the system comprises a main body, a supporting rod, a data processing module, a fixed sensor group and a sensor expansion module interface, atmospheric temperature, atmospheric humidity, atmospheric pressure, carbon dioxide content, illumination intensity, rainfall, wind speed, wind direction, soil temperature, soil humidity, soil conductivity, short-wave radiation flux, long-wave radiation flux, photosynthetically active radiation flux, multiband solar spectrum, plant reflection spectrum, dynamic crop coefficient, canopy temperature, latent heat flux and net radiation flux can be obtained; according to the method, various plant growth monitoring parameters such as the vegetation index, the chlorophyll index and the effective accumulated temperature are normalized, so that more plant growth parameters can be obtained, and more accurate plant growth information is provided.

The invention relates to the field of environmental engineering, and discloses a carbon dioxide geological sequestration leakage early warning device which comprises a box body, multiple sets of connecting columns are installed at the bottom of the box body, the length of the connecting columns is not smaller than 5 m, iron buckets are welded to the outer surfaces of the connecting columns, and communicating holes are formed in the outer surfaces of the connecting columns; the top end of the connecting column is fixedly connected with a sealing cylinder located in an inner cavity of the box body, and a piston is arranged in the sealing cylinder in a sealed and sleeved mode. According to the device, radial displacement (referring to the radial direction of a deep hole) generated by crustal movement in the inner wall of the deep hole in an early warning region is utilized to radially extrude an iron bucket, so that the iron bucket deforms, the volume of an inner cavity of the iron bucket is reduced, transmission oil is forced to upwards push a piston and a connecting plate to apply pressure to a pressure sensor, and crustal stress is sensed through the pressure sensor; compared with real-time monitoring of the carbon dioxide content, the carbon dioxide leakage early-warning method has an obvious early-warning effect.

The invention discloses a low-energy-consumption natural gas low-temperature rectification decarburization process. The process comprises the following steps: S1, firstly removing water and sulfur-containing compounds in raw material gas; s2, cooling the raw material gas without water and sulfur-containing compounds to-30 DEG C to-27 DEG C, and introducing a separated gas-phase material without C4 and above light hydrocarbon substances into a tower kettle reboiler of a low-temperature rectifying tower as a heat source of the tower kettle reboiler to form a gas-liquid mixed material at-37 DEG C; and S3, controlling the pressure of the gas-liquid mixture at-37 DEG C to be 2.5-3.5 MpaA, introducing the gas-liquid mixture into a low-temperature rectifying tower, and finally harvesting methane-rich natural gas at the top of the tower and liquid-phase carbon dioxide at the bottom of the tower. The method has the advantages that the energy consumption is low, and the natural gas with complex components and ultrahigh carbon dioxide content can be decarbonized.

The utility model discloses a collecting device for capturing carbon dioxide, and relates to the field of carbon dioxide capturing. The device comprises a device main body, a liquid tank and a front air inducing mechanism, the front air inducing mechanism comprises a shell, and an induced draft fan which is vertically mounted is arranged in the shell; the carbon dioxide monitor is installed on the air inlet pipe, the model of the carbon dioxide monitor is sk-600-CO2, the carbon dioxide monitor is installed on the air inlet pipe, after the induced draft fan is started, air passes through the carbon dioxide monitor, and the carbon dioxide monitor can monitor the content of carbon dioxide in the sucked air in real time; a worker can determine whether the collecting device works or not by observing the carbon dioxide content, when the carbon dioxide content is at a low value, the worker can close the collecting device, power consumption of the device can be reduced, meanwhile, after the carbon dioxide content in the air is recovered, the collecting device is started after a period of time; and efficient collection can be kept after the device is started.

The present invention discloses a carbon dioxide concentration prediction method based on a semi-supervised deep probability model for on-line detection of the carbon dioxide content in a carbon dioxide absorption tower. Based on the conventional probabilistic principal component regression model, the present invention simultaneously introduces the ideas of semi-supervised learning and deep learning, expands the basic probabilistic principal component regression model into the structure of a semi-supervised deep learning model, that is, proposes a new soft sensing method based on a semi-supervised deep probabilistic principal component regression model for on-line detection of the carbon dioxide concentration in a carbon dioxide absorption tower. Compared with the conventional principal component regression model, the method of the present invention can not only effectively utilize a large amount of cheap unlabeled sample information, but also deeply extract the information hidden in the process data, thereby improving the actual prediction effect of the carbon dioxide concentration.

The invention discloses a method for testing the content of free carbon in boron carbide, which comprises the following steps: S1, weighing m g of a boron carbide sample containing free carbon, putting into a reaction device filled with a chromic sulfate iodic acid solution, and arranging a carbon dioxide detection device at the output end of the reaction device; s2, the reaction device is heated, the boron carbide sample and the chromic sulfate iodic acid solution react to generate carbon dioxide, the heating time is H, the heating temperature is T, and the detection device measures the content of carbon dioxide in the first reaction; s3, repeating the step S2 to obtain the content of carbon dioxide in the second reaction; and S4, subtracting the content of carbon dioxide obtained in the step S3 from the content of carbon dioxide obtained in the first reaction in the step S2 to obtain the content of carbon dioxide generated in the free carbon reaction, and obtaining the content of free carbon in the boron carbide sample through conversion. The content of carbon dioxide generated by the boron carbide reaction at the same temperature within the same time is the same, the content of carbon dioxide generated by free carbon can be obtained, and the error is small.

The trachea cannula capable of being heated and measuring the temperature is used in cooperation with a monitor and comprises a multi-cavity trachea body, a heating body is arranged in the pipe wall of one side of the multi-cavity trachea body, a temperature measuring probe is arranged in the pipe wall of one side of the multi-cavity trachea body, an end-expiratory carbon dioxide monitoring pipe is arranged in the pipe wall of the multi-cavity trachea body, and the temperature measuring probe is arranged in the pipe wall of the multi-cavity trachea body. The heating body, the temperature measuring probe and the end-tidal carbon dioxide monitoring tube are all connected to the monitor. When the trachea cannula heating device is used, the heating body is connected with the monitor which has the heating function, the temperature monitoring function and the end-tidal carbon dioxide monitoring function, the temperature needed by the human body is set through the monitor and conveyed to the heating wire to heat the trachea cannula, the temperature of gas is increased after the gas passes through the heated trachea cannula, and the temperature suitable for the human body is reached. Meanwhile, the temperature probe on the trachea cannula monitors the temperature of the airway at the same time so as to achieve the function of monitoring the body temperature in real time, and the other end-expiratory carbon dioxide monitoring tube monitors the carbon dioxide content of gas exhaled from the airway of the patient at the same time.

A patient ventilation system and a computing device-implemented method determine oxygen consumption in a mechanically ventilated subject includes receiving a signal representing a total flow at an inspiratory outlet of a ventilator, calculating a transport delay time between inspiratory and expiratory gas sample points in a patient ventilation circuitry, transmitting a signal to an inlet selector valve to selectively open a fluid path between the inspiratory gas sample point and an oxygen sensor or between the expiratory gas sample point and the oxygen sensor, receiving data representing oxygen content and carbon dioxide content over a period of time, calculating oxygen consumption data over the period of time from the data representing the total flow, oxygen content and carbon dioxide content and from the transport delay time, and displaying the oxygen consumption data over the period of time.

The utility model relates to the field of sewage treatment, in particular to a composite three-phase separator module for preventing sludge calcification and an anaerobic reactor thereof, which comprise an outer separation module, an inner separation module, a water outlet module and a backflow module, according to the composite three-phase separator module provided by the utility model, a remarkable technical breakthrough is realized through structural innovation and process optimization. The traditional IC reactor is limited by the arrangement mode of a three-phase separator, and the effective sludge level height is less than 50% of the total height of the reactor, so that the upper volume is idle. The composite three-phase separator module is integrated at the top of the reactor, and the height of a sludge layer is increased to 70%-80% of the total height of the reactor through the double-layer separation design of the outer separation module and the inner separation module, so that the microbial biomass and the treatment load are greatly improved. Meanwhile, methane is released through forced collision of a V-shaped separation plate of the outer separation module, so that the content of carbon dioxide in reflux liquid is reduced by more than 80%, and calcium carbonate crystallization conditions are effectively destroyed by combining forced mixing of inlet water with a circulating pump.

The embodiment of the invention provides a gas channeling risk early warning method, device and equipment and a storage medium, and belongs to the technical field of oil and gas field development. According to the method, when the carbon dioxide flooding technology is used for crude oil extraction of the production well, the current gas channeling risk of the target object is judged by detecting the gas-oil ratio and the carbon dioxide content, proper anti-channeling measures can be made and implemented in time according to the gas channeling risk, and the oil extraction rate can be increased.

The utility model discloses a polyethylene foaming material carbon dioxide leakage detection device which comprises a detection device and a gas tank, a gas inlet pipe is arranged on one side of the gas tank, a gas collection hopper is arranged on the upper end portion of the gas inlet pipe, a support is arranged in the gas collection hopper, a motor drives fan blades to rotate, and carbon dioxide leaked in the polyethylene foaming process is discharged out of the gas tank. Due to the connection effect among the air outlet pipe, the spiral blade and the air tank, the mixed air generates downward spiral accelerated movement under the guidance of the spiral blade, and water vapor is separated from the mixed air under the gravity and centrifugal effect; mixed air which falls to the inner bottom of the air tank at the outlet of the lower end of the spiral blade to be collected, is separated from water vapor and dried enters the air outlet pipe from the bottom end of the air outlet pipe and is conveyed into the detection device, so that the water vapor content in the air is prevented from influencing the detection result of the carbon dioxide content in the air, and the accuracy of the detection result is improved.

1. The name of the design product: farmland environment multi-modal high-throughput intelligent sensing equipment. 2. The use of the design product: as a sensing detection device, detecting temperature, humidity, atmospheric pressure, wind speed, wind direction, total solar radiation, illumination, rainfall, carbon dioxide content, and particulate matter concentration in the farmland environment. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The invention belongs to the technical field of ventilation systems, and particularly relates to a closed living space ventilation system which comprises a closed living space body, a ventilation module, a detection module, a fresh air module and a control module. The ventilation module is used for exhausting air in the closed living space body, a body of the ventilation module is a ventilation cylinder, and the ventilation cylinder is fixedly installed on the inner side wall of the closed living space body. According to the device, when it is detected that the content of carbon dioxide is too high, the carbon dioxide detector transmits a signal to the PLC, the PLC receives information and transmits the information to the exhaust fan so as to control the exhaust fan to be started, the exhaust fan sucks in external air through the fresh air system and the air inlet pipe, and the carbon dioxide content is detected to be too high. And external air is purified and filtered through the activated carbon filtering module and the carbon dioxide adsorption module in the fresh air system, so that the content of carbon dioxide in the input air is reduced, and the quality of the input air is improved.

The invention discloses oil and gas well carbon dioxide online monitoring and metering equipment and an implementation method thereof, and relates to the technical field of oil field metering. The equipment comprises a gas-liquid separation unit, a liquid production capacity and moisture content analysis and detection unit, a carbon dioxide content detection unit, a gas flow unit, an automatic control unit, a data acquisition and transmission unit and an auxiliary unit, on-line metering and remote data transmission of parameters including liquid production capacity, gas production capacity, water content, carbon dioxide content, pressure and temperature of a wellhead of an oil well can be realized. The gas-liquid separation unit adopts a gravity separation method and is combined with a specific structural design to guarantee the separation effect; each parameter detection unit realizes accurate detection based on an ultrasonic technology, an infrared absorption principle, a thermal measurement principle and the like; data are uploaded to an upper computer through a DTU unvarnished transmission technology, and real-time monitoring and data analysis are supported. The system is adaptive to conventional drive and CCUS drive oil fields, the automation degree is high, the environmental adaptability is high, and data support is provided for accurate management of oil reservoirs.

The object of the present invention is to provide a biogas treatment facility and a biogas treatment method that enable the removal of carbon dioxide contained in biogas generated by methane fermentation in a simple and low-cost manner. [Solution] To solve the above problems, we provide a biogas treatment facility and a biogas treatment method that include a gas-liquid contact section for bringing biogas discharged from a methane fermentation facility into contact with an aqueous solution containing alkaline earth metal ions, wherein a carbonate precipitation reaction proceeds in the gas-liquid contact section. [Effect] According to this invention, for biogas generated by methane fermentation and having a relatively high carbon dioxide content, carbon dioxide can be removed (recovered and fixed) from the biogas by a carbonate precipitation reaction that proceeds without the supply of external energy. This makes it possible to remove carbon dioxide contained in biogas simply and at low cost.

The present invention discloses a control method, device, air conditioner and storage medium for an air conditioner. The method includes: obtaining the indoor environmental temperature, indoor environmental humidity, indoor oxygen concentration, indoor carbon dioxide content, outdoor weather information and weather forecast information of the air conditioner; controlling the opening and closing of at least one of the door and window according to the weather forecast information; controlling the opening and closing of the fresh air function according to the indoor oxygen concentration and indoor carbon dioxide content; controlling the opening and closing of the dehumidification function and / or the opening and closing of the humidifying device according to the indoor environmental temperature and indoor environmental humidity; controlling the opening and closing of at least one of the door and window according to the outdoor weather information, indoor environmental humidity, indoor oxygen concentration, indoor oxygen concentration and indoor carbon dioxide content. With this solution, based on the Internet of Things, it is possible to accurately control the indoor temperature and humidity, as well as the balance of carbon dioxide and oxygen, and monitor the safety status of the doors and windows in the presence or absence of people, which is conducive to improving the convenience of people's lives.

A method of isolating a vehicle occupant's breath is presented that includes energizing an ultraviolet radiation source to disinfect the air. A first sensor detects the carbon dioxide content in the air. A second sensor detects the quality of the air. A third sensor detects particles in the air. The results of the first sensor are compared to a baseline carbon dioxide reading recorded in a controller connected to the sensor. Fan speed increases the duration of air exposure to the ultraviolet radiation. The results of the second sensor are compared to a baseline air quality recorded in the controller. A display including a filtration system is signaled to identify contaminants in the air. The results of the third sensor are compared to a baseline particle recorded in the controller. A warning is sent to a party of interest indicating the presence of particles in the air.

The invention relates to a preparation process for producing water for injection based on a hollow fiber deoxidation membrane, and belongs to the technical field of preparation of water for injection medicines. According to the preparation process of the water for injection, dissolved oxygen in a water body can be stably removed, reproduction of microorganisms, bacteria and the like in the water can be effectively restrained by strictly controlling the content of oxygen and carbon dioxide in the water, meanwhile, due to removal of carbon dioxide in the water body, the conductivity of the water body is further reduced, the pH value of the finished water is stabilized to be 6.5-7.5, and the water quality is improved. The related industrial standards of the water for injection are met, and the content of microorganisms and endotoxin meets the strict requirements of the 2025 edition pharmacopoeia. Compared with a traditional distillation method, the membrane method integration process does not need to consume a large amount of industrial steam, energy consumption can be remarkably reduced, and the operation cost is reduced; by optimizing the position of the hollow fiber deoxidation membrane device, the water quality and the storage stability of the water for injection can be improved, and the production cost and the maintenance cost can be reduced.

This invention relates to the field of mining environmental protection equipment technology, and more particularly to a separable mining carbon neutralization device. The separable mining carbon neutralization device provided by this invention solves the technical problem of poor operational stability in existing mining carbon neutralization devices. The separable mining carbon neutralization device includes a pre-stage component for separating carbon dioxide from gas, a post-stage component for adsorbing the carbon dioxide separated by the pre-stage component, and a gas pump. By setting a separation membrane to separate carbon dioxide from the gas, the gas entering the post-stage component has a higher carbon dioxide content and lower impurity content, which facilitates rapid adsorption of carbon dioxide by the adsorbent, thereby improving the stability of the mining carbon neutralization device during operation and increasing the gas treatment efficiency.

The invention relates to the technical field of liquid packaging containers, in particular to an automatic pressure maintaining and cooling beer can. Comprising a barrel body, a barrel cover is installed at the upper end of the barrel body, the barrel cover comprises a cover body fixedly connected to an opening of the barrel body and a wine spear arranged in the center of the cover body, and a pressure balancing device used for supplementing pressure is arranged in an inner cavity of the barrel body. The pressure balancing device comprises an air tank with a telescopic trigger rod, an air bag used for driving the trigger rod and an air bag support connected between the air tank and the air bag, and the air bag support is connected to the wine spear in a clamped mode. According to the beer barrel, automatic pressure maintaining and cooling can be achieved by releasing gas in the gas tank, so that the temperature and the carbon dioxide content of beer in the barrel are kept at a proper level, and the taste of the drunk beer is improved; the sealed air bag detects the pressure in the barrel body and controls the action of the air tank at the same time, the action is reliable and free of leakage, and lubricating oil pollution can be eradicated.

The waste gas treatment method and system based on the metal seawater battery involve electrochemical energy technology and environmental protection technology. The waste gas treatment method of the present invention includes the following steps: (1) introducing the waste gas generated by the near-shore waste gas emission device into the reaction zone of the metal seawater battery; (2) the hydroxide ions generated by the positive electrode of the metal seawater battery react with the carbon dioxide in the waste gas to neutralize the hydroxide ions, and the resulting carbonate ions combine with metal ions to form carbonates to reduce the carbon dioxide content in the waste gas. At the same time, the metal seawater battery outputs electrical energy. The tail gas CO2 capture efficiency of the present invention is high, reaching more than 80%, and at the same time, CO2 resource utilization is realized.

The invention discloses a chamber interior air conditioning system which comprises a chamber, a first air inlet mechanism, a first air inlet pipeline, a carbon dioxide removing mechanism, a second air inlet pipeline, an exhaust pipeline, a first communicating valve and a second communicating valve. The carbon dioxide removal mechanism comprises a first carbon dioxide adsorption and desorption tower and a second carbon dioxide adsorption and desorption tower which are used for alternately adsorbing and desorbing carbon dioxide, and the chamber is communicated with a gas outlet pipeline and a gas return pipeline; the first communicating valve is used for selectively communicating the second gas inlet pipeline and the gas outlet pipeline with the first carbon dioxide adsorption and desorption tower and the second carbon dioxide adsorption and desorption tower in pairs; and the second communicating valve is used for selectively communicating the gas exhaust pipeline and the gas return pipeline with the first carbon dioxide adsorption and desorption tower and the second carbon dioxide adsorption and desorption tower in pairs. The air conditioning system in the chamber not only can meet the requirement for maintaining the qualified carbon dioxide content in the chamber, but also can meet the requirement for maintaining the qualified pressure in the chamber.

The invention relates to the technical field of biogas purification, and particularly discloses a system and a method for preparing LNG (Liquefied Natural Gas) by biogas purification, the system comprises a desulfurization unit, a compression unit, a dehydration unit, a rectification unit and a liquefaction unit which are connected in sequence; the desulfurization unit removes hydrogen sulfide; the compression unit pressurizes the biogas; the dehydration unit is composed of three dehydration towers, and the three dehydration towers circularly and continuously dry the biogas; the pre-cooling heat exchanger is used for cooling the dehydrated biogas, the rectification unit comprises primary rectification and secondary rectification, and an LPG extraction agent is introduced into the primary rectification tower; the two-stage rectifying tower is used for removing carbon dioxide in the biogas, and the LPG extracting agent is recycled in the rectifying tower; the liquefying unit comprises a liquefier, the methane with carbon dioxide removed is made into LNG through pressurization of the liquefier, and by means of the scheme, the hydrogen sulfide content in the methane can be reduced to 1 ppm or below, the water content can be reduced to 1 ppm or below, and the carbon dioxide content can be reduced to 50 ppm or below.

Disclosed herein are systems and methods for monitoring at least one volatile breathing compound in respiratory gases of patients. A device includes a patient respiratory gas interface coupled via a connector to a gas sampling line. The line includes a first channel for conducting a predetermined flux of respiratory gases from the interface to an inlet of a sidestream gas monitor, which monitors carbon dioxide (CO₂) content. A pump facilitates gas flow through the device and the monitor. An outlet of the monitor is coupled to a second channel for conveying gases away. A valve controls passage of respiratory gas from the monitor via the second channel by connecting or disconnecting the flux to / from at least one volatile breathing compound detector, which monitors compound content. A control unit monitors CO₂ values and uses this as a signal to control the valve, enabling compound monitoring or bypass based on CO₂ content.

This beer-flavored beverage has an alcohol content of 9.0 (v / v)% or more, a real extract concentration of 12.5 (w / w)% or more, and a linalool content of 7.0 ppb by mass or more, an iso-α acid content of 3.0 ppm by mass or more or a carbon dioxide gas content of 4,500 mg / L or less.

The invention relates to the technical field of carbon dioxide concentration monitoring, and discloses a carbon dioxide concentration monitoring device for a blast furnace gas diffusion port, which comprises a combustor. When blast furnace gas enters the burner, one part of the blast furnace gas enters the guide assembly, and the part of the blast furnace gas enters the detection assembly through the guide assembly to detect the content of carbon dioxide in the blast furnace gas; the blast furnace gas entering the detection assemblies through the guide assemblies can be discharged from the top ends of the guide assemblies again, so that the detection assemblies can detect the carbon dioxide content of the diffused blast furnace gas in real time, and due to the fact that the detection assemblies and the guide assemblies are arranged, different positions of the blast furnace gas can be conveniently detected; therefore, the real-time carbon dioxide content can be obtained by taking the average value of the detection results, so that deviation of the detection results can be avoided, and the accuracy of carbon dioxide concentration detection is improved.