Method and device for detecting gas pollutants
阅读说明：本技术 一种气体污染物检测方法及装置 (Method and device for detecting gas pollutants ) 是由 王堃 常鲁楠 肖利容 肖德玲 于 2019-09-17 设计创作，主要内容包括：一种气体污染物检测方法及装置,其中方法包括：燃烧气体污染物,得到气体污染物转化的二氧化碳气体；检测二氧化碳气体的浓度；将二氧化碳气体的浓度与二氧化碳气体标准浓度进行比较,得到气体污染物的浓度。通过采用燃烧方式处理气体污染物以得到气体污染物转化的二氧化碳气体,将二氧化碳气体的浓度与标准二氧化碳气体浓度进行比较,得到待测气体中气体污染物的浓度,具备气体污染物检测精度高的优点,且同步检测各类气体污染物节省检测时间,提高检测效率。(A method and a device for detecting gas pollutants are provided, wherein the method comprises the following steps: burning the gas pollutants to obtain carbon dioxide gas converted from the gas pollutants; detecting the concentration of carbon dioxide gas; and comparing the concentration of the carbon dioxide gas with the standard concentration of the carbon dioxide gas to obtain the concentration of the gas pollutants. Through adopting the combustion mode to handle gaseous pollutant in order to obtain the carbon dioxide gas of gaseous pollutant conversion, compare carbon dioxide gas's concentration and standard carbon dioxide gas concentration, obtain gaseous pollutant's in the gas that awaits measuring concentration, possess gaseous pollutant and detect the advantage that the precision is high, and the synchronous detection all kinds of gaseous pollutants save check-out time, improve detection efficiency.)
1. A method for detecting gaseous pollutants, comprising the steps of:
combusting the gaseous pollutants to obtain carbon dioxide gas converted from the gaseous pollutants;
detecting the concentration of the carbon dioxide gas;
and comparing the concentration of the carbon dioxide gas with the standard concentration of the carbon dioxide gas to obtain the concentration of the gas pollutants.
2. The method of claim 1, wherein the combusting the gaseous pollutants to obtain the carbon dioxide gas converted from the gaseous pollutants comprises:
gradually increasing the combustion temperature;
when the combustion temperature is in a first preset temperature range, obtaining the carbon dioxide gas converted from the organic gas pollutants;
when the temperature is in a second preset temperature range, obtaining the carbon dioxide gas converted from the inorganic gas pollutants;
wherein the maximum value of the first preset temperature range is less than or equal to the minimum value of the second preset temperature range.
3. The method of claim 1, wherein said detecting the concentration of said carbon dioxide gas comprises:
reducing the carbon dioxide gas to obtain methane gas;
detecting an ion concentration of the methane gas;
comparing the ion concentration of the methane gas with a methane gas standard ion concentration, wherein the methane gas standard ion concentration corresponds to the carbon dioxide gas standard concentration;
obtaining the concentration of the carbon dioxide gas.
4. The method of claim 3, wherein the comparing the ion concentration of the methane gas to a methane gas standard ion concentration comprises:
acquiring a chemical signal of the concentration of the methane gas ions;
converting the chemical signal of the methane gas ion concentration into an electrical signal;
generating an integral chart by using the electric signal of the methane gas ion concentration;
and comparing the integral graph of the methane gas ion concentration with a standard integral graph, wherein the standard integral graph corresponds to the methane gas standard ion concentration.
5. The method of claim 4, wherein comparing the integral plot of the methane gas ion concentration to a standard integral plot comprises:
and comparing the area of the integral graph of the methane gas ion concentration with the area of the standard integral graph.
6. A gaseous pollutant detection device, comprising:
the combustion module is used for combusting the gas pollutants to obtain carbon dioxide gas converted from the gas pollutants;
the detection module is used for detecting the concentration of the carbon dioxide gas;
and the comparison module is used for comparing the concentration of the carbon dioxide gas with the standard concentration of the carbon dioxide gas to obtain the concentration of the gas pollutants.
7. The gaseous pollutant detection device of claim 6, wherein the combustion module comprises:
a control unit for gradually increasing the combustion temperature;
the first obtaining unit is used for obtaining the carbon dioxide gas converted from the organic gas pollutants when the combustion temperature is in a first preset temperature range;
the second acquisition unit is used for acquiring the carbon dioxide gas converted from the inorganic gas pollutants when the combustion temperature is in a second preset temperature range;
wherein the maximum value of the first preset temperature range is less than or equal to the minimum value of the second preset temperature range.
8. The gaseous pollutant detection device of claim 6, wherein the detection module comprises:
the reduction unit is used for reducing the carbon dioxide gas to obtain methane gas;
a detection unit for detecting an ion concentration of the methane gas;
and the comparison unit is used for comparing the ion concentration of the methane gas with the standard ion concentration of the methane gas, wherein the standard ion concentration of the methane gas corresponds to the standard ion concentration of the carbon dioxide gas.
9. The gaseous pollutant detection device of claim 8, wherein the comparison unit comprises:
the signal acquisition subunit is used for acquiring a chemical signal of the concentration of the methane gas ions;
the signal conversion subunit is used for converting the chemical signal of the methane gas ion concentration into an electric signal;
an integral map generating subunit, configured to generate an integral map from the electric signal of the methane gas ion concentration;
and the integral chart comparison subunit is used for comparing the integral chart of the methane gas ion concentration with a standard integral chart, wherein the standard integral chart corresponds to the methane gas standard ion concentration.
10. The gaseous pollutant detecting device of claim 9,
the integral map comparison subunit is also used for comparing the area of the integral map of the methane gas ion concentration with the area of the standard integral map.
11. A storage medium having stored thereon a computer program which, when executed by a processor, carries out the steps of a method of gas contaminant detection according to any one of claims 1 to 5.
12. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the steps of the method for detecting gaseous pollutants as claimed in any one of claims 1 to 5 when executing the computer program.
Technical Field
The invention relates to the technical field of gas component detection, in particular to a method and a device for detecting gas pollutants.
Background
Contaminants are substances that change the normal composition of the environment after entering the environment and are directly or indirectly harmful to the growth, development and reproduction of organisms. The gaseous pollutant is one of the pollutants, and mainly includes various organic pollutants and inorganic pollutants. The gas pollutants are released into the air, which not only causes environmental pollution, but also poses a threat to human health.
The existing gas pollutant detection mode detects various gas pollutants through various sensors to obtain the concentration of certain gas pollutants in gas to be detected. In the detection process, various sensors are influenced by the high fusion of various gas pollutants in the gas to be detected, the defects of poor detection precision and mutual interference of various gas pollutants with the detection result exist, and the problem of long time consumption exists when various gas pollutants are detected respectively.
Disclosure of Invention
Therefore, the technical problem to be solved by the present invention is to overcome the defects of poor precision and long time consumption in the detection of the gas pollutants, so as to provide a method for detecting the gas pollutants, which comprises the following steps:
combusting the gaseous pollutants to obtain carbon dioxide gas converted from the gaseous pollutants;
detecting the concentration of the carbon dioxide gas;
and comparing the concentration of the carbon dioxide gas with the standard concentration of the carbon dioxide gas to obtain the concentration of the gas pollutants.
Preferably, said combusting the gaseous pollutants to obtain carbon dioxide gas converted from said gaseous pollutants comprises:
gradually increasing the combustion temperature;
when the combustion temperature is in a first preset temperature range, obtaining the carbon dioxide gas converted from the organic gas pollutants;
when the temperature is in a second preset temperature range, obtaining the carbon dioxide gas converted from the inorganic gas pollutants;
wherein the maximum value of the first preset temperature range is less than or equal to the minimum value of the second preset temperature range.
Preferably, the detecting the concentration of the carbon dioxide gas includes:
reducing the carbon dioxide gas to obtain methane gas;
detecting an ion concentration of the methane gas;
comparing the ion concentration of the methane gas with a methane gas standard ion concentration, wherein the methane gas standard ion concentration corresponds to the carbon dioxide gas standard concentration;
obtaining the concentration of the carbon dioxide gas.
Preferably, the comparing the ion concentration of the methane gas with the standard ion concentration of methane gas comprises:
acquiring a chemical signal of the concentration of the methane gas ions;
converting the chemical signal of the methane gas ion concentration into an electrical signal;
generating an integral chart by using the electric signal of the methane gas ion concentration;
and comparing the integral graph of the methane gas ion concentration with a standard integral graph, wherein the standard integral graph corresponds to the methane gas standard ion concentration.
Preferably, the comparing the integral plot of the methane gas ion concentration with a standard integral plot comprises:
and comparing the area of the integral graph of the methane gas ion concentration with the area of the standard integral graph.
Correspondingly, the invention also provides a gas pollutant detection device, which comprises:
the combustion module is used for combusting the gas pollutants to obtain carbon dioxide gas converted from the gas pollutants;
the detection module is used for detecting the concentration of the carbon dioxide gas;
and the comparison module is used for comparing the concentration of the carbon dioxide gas with the standard concentration of the carbon dioxide gas to obtain the concentration of the gas pollutants.
Preferably, the combustion module comprises:
a control unit for gradually increasing the combustion temperature;
the first obtaining unit is used for obtaining the carbon dioxide gas converted from the organic gas pollutants when the combustion temperature is in a first preset temperature range;
the second acquisition unit is used for acquiring the carbon dioxide gas converted from the inorganic gas pollutants when the combustion temperature is in a second preset temperature range;
wherein the maximum value of the first preset temperature range is less than or equal to the minimum value of the second preset temperature range.
Preferably, the detection module comprises:
the reduction unit is used for reducing the carbon dioxide gas to obtain methane gas;
a detection unit for detecting an ion concentration of the methane gas;
and the comparison unit is used for comparing the ion concentration of the methane gas with the standard ion concentration of the methane gas, wherein the standard ion concentration of the methane gas corresponds to the standard ion concentration of the carbon dioxide gas.
Preferably, the comparison unit includes:
the signal acquisition subunit is used for acquiring a chemical signal of the concentration of the methane gas ions;
the signal conversion subunit is used for converting the chemical signal of the methane gas ion concentration into an electric signal;
an integral map generating subunit, configured to generate an integral map from the electric signal of the methane gas ion concentration;
and the integral chart comparison subunit is used for comparing the integral chart of the methane gas ion concentration with a standard integral chart, wherein the standard integral chart corresponds to the methane gas standard ion concentration.
Preferably, the integral map comparison subunit is further configured to compare an integral map area of the methane gas ion concentration with the standard integral map area.
The present invention also provides a storage medium having a computer program stored thereon, which when executed by a processor, performs the steps of any of the above-described methods of detecting a gaseous pollutant.
The invention also provides an electronic device, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor executes the computer program to realize the steps of any one of the gas pollutant detection methods.
The technical scheme of the invention has the following advantages:
according to the method and the device for detecting the gas pollutants, provided by the invention, the gas pollutants are treated in a combustion mode to obtain the carbon dioxide gas converted from the gas pollutants, the concentration of the carbon dioxide gas is compared with the concentration of the standard carbon dioxide gas to obtain the concentration of the gas pollutants in the gas to be detected, and the method and the device have the advantages of high detection precision of the gas pollutants, synchronous detection, detection time saving and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a flow chart of a method for detecting gaseous pollutants in accordance with an embodiment of the present invention;
FIG. 2 is a flow chart of a method for controlling combustion of gaseous pollutants in accordance with an embodiment of the present invention;
FIG. 3 is a flow chart of a method for detecting the concentration of carbon dioxide in an embodiment of the present invention;
FIG. 4 is a flow chart of a method for detecting a concentration of methane gas according to an embodiment of the present invention;
FIG. 5 is a block diagram of a gas contaminant detection apparatus according to an embodiment of the present invention;
FIG. 6 is a block diagram of a combustion module in an embodiment of the invention;
FIG. 7 is a block diagram of a detection module in an embodiment of the invention;
FIG. 8 is a block diagram of a comparison unit in an embodiment of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
A first aspect of the embodiments of the present invention provides a method for detecting a gas pollutant, with reference to fig. 1, including the following steps:
and S100, burning the gas pollutants to obtain carbon dioxide gas converted from the gas pollutants. The organic gas pollutants and the inorganic gas pollutants in the gas to be detected can be combusted to generate carbon dioxide gas.
Alternatively, the combustion temperature is in the range of 40 ℃ to 900 ℃. Most of organic gas pollutants and inorganic gas pollutants can be converted in the range to obtain corresponding carbon dioxide gas for subsequent concentration measurement.
And S200, detecting the concentration of the carbon dioxide gas.
And S300, comparing the concentration of the carbon dioxide gas with the standard concentration of the carbon dioxide gas to obtain the concentration of the gas pollutants.
According to the gas pollutant detection method, the gas pollutants are treated in a combustion mode to obtain the carbon dioxide gas converted from the gas pollutants, the concentration of the carbon dioxide gas is compared with the concentration of the standard carbon dioxide gas to obtain the concentration of the gas pollutants in the gas to be detected, the gas pollutant detection method has the advantage of high detection precision of the gas pollutants, the detection time is saved by synchronously detecting various gas pollutants, and the detection efficiency is improved.
In one implementation manner of the embodiment of the present invention, referring to fig. 2, the step S100 of combusting the gas pollutant to obtain the carbon dioxide gas converted from the gas pollutant includes the following steps:
and S110, gradually increasing the combustion temperature.
By gradually increasing the combustion temperature, the organic and inorganic gaseous pollutants can be more sufficiently combusted to improve the detection accuracy of the gaseous pollutants.
Optionally, the combustion temperature is increased by 50-70 ℃/min in a first preset temperature interval, and is increased by 20 ℃/min each time in a second preset temperature interval.
And S120, when the combustion temperature is in a first preset temperature range, obtaining carbon dioxide gas converted from the organic gas pollutants.
And S130, when the temperature is in a second preset temperature range, obtaining carbon dioxide gas converted from the inorganic gas pollutants.
Wherein the maximum value of the first preset temperature range is less than or equal to the minimum value of the second preset temperature range.
Organic gaseous pollutants are distinguished from inorganic gaseous pollutants at different stages of combustion by gradually increasing the combustion temperature of the gaseous pollutants.
Generally, the boiling point of organic gaseous contaminants is lower and the boiling point of inorganic gaseous contaminants is higher. When the combustion temperature is in a first preset temperature range, the organic gas pollutants are converted under the action of combustion to obtain carbon dioxide gas. At this time, the obtained carbon dioxide gas is only converted from the organic gas pollutant and does not contain the carbon dioxide gas converted from the inorganic gas pollutant.
Optionally, the first preset temperature range is 40 ℃ to 400 ℃.
In one implementation of the embodiment of the present invention, the first preset temperature range may be further subdivided into: the device comprises a first preset interval, a second preset interval and a third preset interval.
Optionally, the first preset range is 40-120 ℃, and when the combustion temperature is in the first preset range, the organic gas pollutants capable of being converted into carbon dioxide gas are short-chain organic gas pollutants below C6.
Optionally, the second predetermined range is 120 ℃ to 250 ℃, and when the combustion temperature is in the second predetermined range, the organic gas pollutants convertible into carbon dioxide gas are medium-chain organic gas pollutants of C7 to C12.
Optionally, the numerical range of the third preset interval is 250 ℃ to 400 ℃, and when the combustion temperature is in the third preset interval, the organic gas pollutants which can be converted into carbon dioxide gas are long-chain organic gas pollutants with the carbon dioxide gas of more than C12.
And when the combustion temperature is in a second preset temperature range, converting the inorganic gas pollutants under the action of combustion to obtain carbon dioxide gas. At this time, the obtained carbon dioxide gas is only converted from the inorganic gas pollutants, and does not contain the carbon dioxide gas converted from the organic gas pollutants.
Optionally, the second preset temperature range is 400 ℃ to 900 ℃. When the combustion temperature is within this range, the inorganic gaseous pollutants convertible into carbon dioxide gas are carbon black-based inorganic gaseous pollutants.
In one implementation manner of the embodiment of the present invention, referring to fig. 3, the detecting the concentration of the carbon dioxide gas in the step S200 includes the following steps:
s210, reducing the carbon dioxide gas to obtain methane gas.
And S220, detecting the ion concentration of the methane gas.
And S230, comparing the ion concentration of the methane gas with the standard ion concentration of the methane gas, wherein the standard ion concentration of the methane gas corresponds to the standard ion concentration of the carbon dioxide gas.
And S240, obtaining the concentration of the carbon dioxide gas.
The detection of the concentration of carbon dioxide gas can be achieved by reducing carbon dioxide to methane. The methane gas is easier to realize the detection of the concentration, and the concentration of the carbon dioxide gas corresponding to the detected ion concentration of the methane gas can be obtained by comparing the detected ion concentration of the methane gas with the standard ion concentration of the methane gas. Wherein the standard ion concentration of the methane gas corresponds to the standard ion concentration of the carbon dioxide gas.
Optionally, referring to fig. 4, the step S230 of comparing the ion concentration of the methane gas with the standard ion concentration of the methane gas includes the following steps:
and S231, acquiring a chemical signal of the concentration of the methane gas ions.
And S232, converting the chemical signal of the concentration of the methane gas ions into an electric signal.
S233, an integral chart is generated from the electric signal of the methane gas ion concentration.
And S234, comparing the integral graph of the ion concentration of the methane gas with a standard integral graph, wherein the standard integral graph corresponds to the standard ion concentration of the methane gas.
And detecting the ion concentration of the methane gas to obtain a chemical signal of the methane gas, converting the chemical signal into an electric signal, and generating an integral diagram by the electric signal through integral diagram output equipment. And comparing the obtained integral diagram with a standard integral diagram to obtain the ion concentration of the methane gas and further obtain the corresponding concentration of the carbon dioxide gas.
Optionally, comparing the integral plot of the methane gas ion concentration with a standard integral plot, comprises: the area of the integral plot of the methane gas ion concentration is compared to the area of the standard integral plot.
By calculating the area of the integral graph, the ion concentration of the methane gas and the corresponding carbon dioxide gas concentration corresponding to the integral graph of the ion concentration of the methane gas can be obtained compared with a standard integral graph. Further obtaining respective concentrations of organic gaseous pollutants and inorganic gaseous pollutants at different temperatures.
The standard integral diagram can be obtained by reducing carbon dioxide gas with known concentration or in an atmospheric environment into methane gas, detecting the ion concentration of the methane gas, converting a chemical signal of the ion concentration of the methane gas into an electric signal, and outputting the electric signal as the standard integral diagram through an integral diagram output device. The standard integral chart checking process can be carried out regularly, the accuracy of the standard integral chart is guaranteed, and the accuracy of gas pollutant detection is improved.
A second aspect of the embodiments of the present invention provides a gas pollutant detecting device, please refer to fig. 5, including: a
The
In one implementation manner of the embodiment of the present invention, referring to fig. 6, the
A control unit 11 for gradually increasing the combustion temperature. The first obtaining unit 12 is configured to obtain carbon dioxide gas converted from the organic gas pollutant when the combustion temperature is within a first preset temperature range. And a second obtaining unit 12, which is used for obtaining the carbon dioxide gas converted from the inorganic gas pollutants when the combustion temperature is in a second preset temperature range. Wherein the maximum value of the first preset temperature range is less than or equal to the minimum value of the second preset temperature range.
In another implementation manner of the embodiment of the present invention, referring to fig. 7, the detecting
And the reduction unit 21 is used for reducing the carbon dioxide gas to obtain methane gas. The detection unit 22 is configured to detect an ion concentration of the methane gas. And a
Optionally, referring to fig. 8, the comparing
And a signal acquiring subunit 231, configured to acquire a chemical signal of the methane gas ion concentration. And a signal conversion subunit 232, configured to convert the chemical signal of the methane gas ion concentration into an electrical signal. And an integral map generating subunit 233 for generating an integral map from the electric signal of the methane gas ion concentration. And an integral map comparison subunit 234 for comparing the integral map of the methane gas ion concentration with a standard integral map. Wherein the standard integral chart corresponds to the standard ion concentration of methane gas.
Preferably, the integral map comparison subunit 234 is further configured to compare the integral map area of the methane gas ion concentration with a standard integral map area.
A third aspect of embodiments of the present invention provides a storage medium having a computer program stored thereon, the computer program, when executed by a processor, implementing the steps of any one of the above-described methods for detecting gaseous pollutants.
A fourth aspect of an embodiment of the present invention provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements any of the steps of the method for detecting a gas pollutant when executing the computer program.
According to the method and the device for detecting the gas pollutants, provided by the embodiment of the invention, the gas pollutants are treated in a combustion mode to obtain the carbon dioxide gas converted from the gas pollutants, the concentration of the carbon dioxide gas is compared with the concentration of the standard carbon dioxide gas to obtain the concentration of the gas pollutants in the gas to be detected, and the method and the device have the advantages of high detection precision of the gas pollutants, synchronous detection, detection time saving and the like.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.