CN116297454B - Intelligent park air detection method and equipment - Google Patents
Intelligent park air detection method and equipment Download PDFInfo
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract
The application discloses an air detection method and device for an intelligent park, wherein the method comprises the following steps: the method comprises the steps of emitting incident detection light to a pyramid prism preset in the intelligent park, arranging an anti-scattering mirror at the side of the incident detection light, reflecting the side air scattering light to the pyramid prism, comparing the incident extinction amount of the incident detection light with the reflection extinction amount of the reflection detection light, determining the side air scattering amount of the incident detection light, further determining the reflection air scattering amount of the reflection detection light according to the side air scattering amount and anti-scattering mirror parameters, eliminating the interference of the reflection air scattering amount in the reflection extinction amount, determining the absorption amount of the reflection pollution gas accurately, and determining the concentration of the pollution gas in the air of the intelligent park according to the reflection pollution gas absorption amount and the pollution gas concentration algorithm, so that the influence of air scattering interference on the detection accuracy of the pollution air can be avoided.
Description
Technical Field
The application relates to the technical field of air detection, in particular to an intelligent park air detection method and equipment.
Background
In recent years, production and manufacturing of China are continuously moving to an intelligent park mode capable of being managed in an omnibearing and multilevel manner, in the aspect of environment protection supervision of the intelligent park, the intelligent park management side is required to organize emission monitoring, energy monitoring, air pollution monitoring, water pollution monitoring and the like regularly, at present, with the continuous promotion of industrial processes of China, the situation of the air environment is more and more severe, and the air pollution existing in the intelligent park seriously damages the health of staff in the intelligent park, so that the standardized air detection on the intelligent park is becoming the key point of environment protection supervision of the intelligent park.
The existing intelligent park air detection method is that detection light is emitted in air to be detected, after air propagation, the detection light is absorbed by air molecules, and meanwhile, polluted gas molecules in the air can absorb the detection light, so that the concentration of the polluted gas can be detected by utilizing the light intensity of the detection light absorbed by the polluted gas molecules, but because the light propagates in the air of the intelligent park, besides extinction caused by the absorption of the polluted gas molecules, a molecular scattering phenomenon exists, part of light is scattered to form air molecule scattering light to cause scattering interference, the scattering interference can cause detection error on the absorption quantity of the polluted gas, and an accurate polluted air detection result is difficult to obtain in the actual air detection in the prior art.
Disclosure of Invention
The application aims to solve the technical problem of providing an intelligent park air detection method and equipment so as to avoid influence of scattering interference on the detection precision of polluted air.
In order to solve the technical problems, the application adopts the following technical scheme:
in a first aspect, the present application provides a smart park air detection method, comprising the steps of:
transmitting incident detection light to a pyramid prism preset in an intelligent park, and arranging an anti-scattering mirror at the side of the incident detection light, wherein the anti-scattering mirror reflects side scattering light scattered by the incident detection light to the pyramid prism;
determining a polluted gas absorption wave band corresponding to the polluted gas to be detected, and detecting the incident extinction amount of the incident detection light on the polluted gas absorption wave band;
the incident detection light is subjected to dislocation reflection by the pyramid prism to form reflection detection light parallel to the incident detection light, the reflection extinction amount of the reflection detection light on the polluted gas absorption wave band is detected, and the side air scattering amount reflected by the anti-scattering mirror is determined according to the reflection extinction amount and the incident extinction amount;
determining the reflected air scattering amount of the reflected detection light rays transmitted in the air of the park to be detected according to the lateral air scattering amount and the anti-scattering mirror reflection parameters;
and correcting the reflection extinction amount according to the determined reflection air scattering amount to obtain a polluted gas absorption amount, and determining the concentration of the polluted gas to be detected in the intelligent park according to the polluted gas absorption amount by a polluted gas concentration algorithm.
In some embodiments, detecting the incident extinction amount of the incident detection light ray on the contaminant gas absorption band comprises:
detecting the light intensity of the incident detection light on a polluted gas absorption wave band at the emitting end of the incident detection light to obtain initial incident detection light intensity;
detecting the light intensity of the incident detection light on a polluted gas absorption wave band at the pyramid prism to obtain extinction incident detection light intensity;
and determining the incident extinction amount of the incident detection light on a polluted gas absorption wave band according to the initial incident detection light intensity and the extinction incident detection light intensity.
In some embodiments, detecting the amount of reflected extinction of the reflected detection light at the contaminated gas absorption band comprises:
detecting the light intensity of the reflected detection light on a polluted gas absorption wave band at the pyramid prism to obtain initial reflected detection light intensity;
after the reflection detection light propagates in the air of the park for a section of optical path, detecting the light intensity of the reflection detection light on a polluted gas absorption wave band at a transmitting end to obtain extinction reflection detection light intensity;
and determining the reflection extinction quantity of the reflection detection light on the polluted gas absorption wave band according to the initial reflection detection light intensity and the extinction reflection detection light intensity.
In some embodiments, the optical path length of the reflected detection light traveling in the campus air is equal to the optical path length of the incident detection light traveling in the campus air.
In some embodiments, determining the amount of reflected air scatter of the reflected detection light traveling in the campus air based on the amount of side air scatter and the anti-scatter mirror reflection parameter may include:
determining the anti-scattering proportion of the anti-scattering mirror according to a preset anti-scattering mirror reflection parameter value;
determining the incident air scattering quantity of incident detection light rays transmitted in the air of the park according to the anti-scattering proportion and the lateral air scattering quantity;
and determining the reflected air scattering amount of the reflected detection light rays transmitted in the air of the park according to the incident air scattering amount.
In some embodiments, the amount of incident air scatter is equal to the amount of reflected air scatter.
In some embodiments, determining the concentration of the contaminant gas to be detected in the smart campus by a contaminant gas concentration algorithm based on the uptake of the contaminant gas may include:
determining an absorption section corresponding to the polluted gas in the intelligent park;
and determining the concentration of the polluted gas in the air environment of the intelligent park through a polluted gas concentration algorithm according to the absorption section corresponding to the polluted gas and the polluted gas absorption quantity.
In a second aspect, the present application provides an air detection device for a smart campus, comprising:
the anti-scattering module is used for emitting incident detection light to a pyramid prism preset in the intelligent park, an anti-scattering mirror is arranged at the side of the incident detection light, and the anti-scattering mirror reflects side scattering light emitted by the incident detection light to the pyramid prism;
the incident extinction amount determining module is used for determining a polluted gas absorption wave band corresponding to the polluted gas to be detected and detecting the incident extinction amount of the incident detection light on the polluted gas absorption wave band;
the side air scattering quantity determining module is used for forming reflected detection light rays parallel to the incident detection light rays after the incident detection light rays are subjected to dislocation reflection through the pyramid prism, detecting reflection extinction quantity of the reflected detection light rays on the polluted gas absorption wave band, and determining the side air scattering quantity reflected by the anti-scattering mirror according to the reflection extinction quantity and the incident extinction quantity;
the reflected air scattering quantity determining module is used for determining the reflected air scattering quantity of the reflected detection light rays transmitted in the air of the park to be detected according to the side air scattering quantity and the anti-scattering mirror reflection parameters;
and the polluted gas concentration acquisition module is used for correcting the reflection extinction quantity according to the determined reflection air scattering quantity to obtain polluted gas absorption quantity, and determining the concentration of the polluted gas to be detected in the intelligent park through a polluted gas concentration algorithm according to the polluted gas absorption quantity.
In a third aspect, the present application provides a computer device comprising a memory and a processor; the memory stores code and the processor is configured to retrieve the code and perform the intelligent campus air detection method described above.
In a fourth aspect, the present application provides a computer readable storage medium storing a computer program, wherein the computer program when executed by a processor implements the intelligent park air detection method described above.
The technical scheme provided by the embodiment of the application has the following beneficial effects:
according to the technical scheme provided by the application, the incident detection light is emitted to the pyramid prism preset in the intelligent park, and the anti-scattering mirror is arranged at the side of the incident detection light, so that the side air scattering light can be transmitted to the pyramid prism by the anti-scattering mirror, and the loss of the incident air scattering quantity of part of the incident detection light is reduced; determining a polluted gas absorption wave band corresponding to the polluted gas to be detected, calculating the incident extinction amount of the incident detection light on the polluted gas absorption wave band, comparing the incident extinction amount with the reflected extinction amount of the reflected detection light transmitted in the same air environment and the same optical path length of the same park on the polluted gas absorption wave band, determining the side air scattering amount of the incident detection light, determining the reflected air scattering amount of the reflected detection light according to the side air scattering amount and the anti-scattering mirror reflection parameter, correcting the reflected extinction amount according to the determined reflected air scattering amount to obtain the accurate polluted gas absorption amount, and finally determining the concentration of the polluted gas to be detected in the intelligent park through a polluted gas concentration algorithm.
According to the application, the reflected air scattering quantity of the reflected detection light is determined, the interference caused by the reflected air scattering quantity is removed from the reflected light extinction quantity of the reflected detection light, so that the relatively accurate pollutant gas absorption quantity is obtained, and the pollutant gas concentration in the air of the intelligent park can be accurately determined according to the pollutant gas absorption quantity, so that the influence of the scattering interference on the pollutant air detection precision can be avoided.
Drawings
FIG. 1 is an exemplary flow chart of a smart campus air detection method according to some embodiments of the application;
FIG. 2 is a schematic diagram illustrating the operation of an anti-scatter mirror in an intelligent park air detection method according to some embodiments of the present application;
FIG. 3 is a schematic diagram of exemplary hardware and/or software of a smart campus air detection device according to some embodiments of the present application;
fig. 4 is a schematic diagram of an exemplary architecture of a computer device for intelligent park air detection according to an embodiment of the present application.
Detailed Description
According to the application, the anti-scattering mirror is arranged at the side of the incident detection light, so that the side air scattering light is transmitted to the pyramid prism, and the incident extinction amount of the incident detection light on the polluted gas absorption wave band corresponding to the polluted gas to be detected is determined; comparing the incident extinction amount of the incident detection light with the reflected extinction amount of the reflected detection light transmitted in the same optical path length in the air environment of the same park in a polluted gas absorption wave band corresponding to the polluted gas to be detected, thereby determining the side air scattering amount of the incident detection light; determining the reflected air scattering amount of the reflected detection light according to the lateral air scattering amount and the anti-scattering mirror parameters; and correcting the reflection extinction amount according to the determined reflection air scattering amount to obtain an accurate polluted gas absorption amount, and further determining the polluted gas concentration in the air of the intelligent park according to the polluted gas absorption amount by a preset algorithm.
In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments. Referring to fig. 1, fig. 1 is an exemplary flow chart of a smart campus air detection method 100 according to some embodiments of the present application, the smart campus air detection method 100 mainly includes the following steps:
in step 101, an incident detection light is emitted to a pyramid prism preset in the smart park, an anti-scattering mirror is arranged at the side of the incident detection light, and the anti-scattering mirror reflects side scattering light scattered by the incident detection light to the pyramid prism.
In some embodiments, the incident detection light may be ultraviolet light, and the emitting end for emitting the incident detection light may be an ultraviolet emitter or other devices capable of emitting light, which is not limited herein.
Referring to fig. 2, the schematic diagram of an exemplary working principle of an anti-scattering mirror according to the present application, where the anti-scattering mirror is located at a side of an optical path of the incident detection light, and the anti-scattering mirror may reflect side-scattered light scattered by the incident detection light to the corner cube prism, and in particular implementation, the anti-scattering mirror may be a mirror made of a high-reflectivity material or other devices capable of implementing a reflection function, which is not limited herein.
It should be noted that, in this embodiment, according to the principle of probability statistics, the air scattered light caused by air molecules in the park is regarded as uniform scattered light in the light advancing direction, and the side scattered light is a part of the air scattered light scattered onto the anti-scattering mirror by the air molecules in the park, and the side air scattered light reaches the pyramid prism after being reflected by the anti-scattering mirror, so that a part of the incident air scattered amount of the incident detection light is reduced, and the part of the air scattered amount can be used as the side air scattered amount of the incident detection light, and in some embodiments, the anti-scattering mirror may adopt a curved surface structure.
It should be noted that after the incident detection light propagates in the air of the smart park, as the pollutant gas will generate an absorption effect on the corresponding absorption wave band, the light intensity of the corresponding absorption wave band in the incident detection light is weakened, the light intensity weakening amount is the pollutant gas absorption amount of the incident detection light, and the pollutant gas absorption amount and the pollutant gas concentration are positively correlated, so that the pollutant gas concentration in the smart park can be obtained according to the pollutant gas absorption amount of the pollutant gas on the corresponding absorption wave band.
In addition, because the existence of atmospheric molecules in the environment of the smart park, when light propagates in the air of the smart park, molecular scattering phenomenon still exists on the corresponding wave band of the polluted gas, the molecular scattering phenomenon can scatter partial light to form air scattering light, the air scattering quantity caused by the partial air scattering light can be mistakenly considered to the polluted gas absorption quantity during air detection, the air scattering quantity mistakenly considered to the polluted gas absorption quantity is scattering interference in air detection, the scattering interference can cause larger deviation between the air detection result of the smart park and the actual situation, therefore, the air scattering quantity existing in the propagation process of the detection light needs to be determined, and the total incidence or reflection extinction quantity in the propagation process of the light is corrected by the air scattering quantity, so that an accurate air detection result is obtained.
It should be noted that in the prior art, a differential absorption spectrum mode may be adopted to perform air detection, but the air scattering amount generated by extinction of air scattering light in the prior art cannot be directly obtained, the complete spectrum before and after transmission of incident detection light is separated, but not the absorption band of polluted gas is separated, and the fast change part of the spectrum caused by absorption of the gas to be detected belongs to a high-frequency part, the slow change part of the spectrum caused by absorption of air scattering and extinction belongs to a low-frequency part, the high-frequency spectrum absorbed by the gas to be detected is separated by using a high-pass filter, and in addition, if the concentration of the gas to be detected is to be obtained, fitting is needed to be performed on the separated absorption spectrum and a reference spectrum, and finally the concentration of the gas to be detected is obtained.
In step 102, a contaminant gas absorption band corresponding to the contaminant gas to be detected is determined, and the incident detection light is detected to determine the incident extinction amount of the contaminant gas absorption band.
In some embodiments, detecting determines the amount of incident extinction of the incident detection light on the contaminant gas-absorbing wavelength band by:
detecting the light intensity of the incident detection light on a polluted gas absorption wave band at the emitting end of the incident detection light to obtain initial incident detection light intensity;
detecting the light intensity of the incident detection light on a polluted gas absorption wave band at the pyramid prism to obtain extinction incident detection light intensity;
and determining the incident extinction amount of the incident detection light on a polluted gas absorption wave band according to the initial incident detection light intensity and the extinction incident detection light intensity.
The incident extinction amount is the light intensity lost in the absorption band corresponding to the polluted gas after the incident detection light propagates in the air of the smart park, in addition, the incident extinction amount of the incident detection light corresponds to the extinction amount on the optical path of the incident detection light, and the optical path length of the incident detection light is the distance between the emitting end of the incident detection light and the pyramid prism.
In some embodiments, for example, the ozone concentration may be used as an air detection index in the intelligent park, the absorption band of ozone molecules may be determined to be 250-270 nm according to preset ozone related information, and detecting the light intensity of the incident detection light on the absorption band corresponding to ozone may include: the incident detection light is split to obtain a plurality of monochromatic lights with different wave bands, and then a photoelectric detection instrument can be used for detecting the light intensity of the monochromatic light with the wave band of 250-270 nanometers in the monochromatic lights with different wave bands; the light splitting operation may use a spectrometer or other devices and apparatuses capable of implementing light splitting.
In some embodiments, the average light intensity over the polluted gas absorption band may be used as the light intensity over the polluted gas absorption band at the time of detection; for example, the average light intensity of the ozone between 250 and 270 nanometers is used as the light intensity of the ozone on the corresponding absorption wave band during detection.
In step 103, the incident detection light is dislocation reflected by the pyramid prism to form a reflection detection light parallel to the incident detection light, the reflection extinction amount of the reflection detection light on the polluted gas absorption band is calculated, and the side air scattering amount reflected by the anti-scattering mirror is detected and determined according to the reflection extinction amount and the incident extinction amount.
In some embodiments, the optical path of the reflected detection light is parallel to the optical path of the incident detection light, and the reflected detection light reflected by the pyramid prism has a dislocation distance with the incident detection light;
the pyramid prism can adopt an isosceles triangle prism structure, incident detection light enters from the middle bottom side rectangular surface of the pyramid prism, after twice total reflection of the other two isosceles bevel side rectangular surfaces of the pyramid prism, the incident detection light is emitted from the bottom side rectangular surface along the opposite direction of the entering direction of the incident detection light, so that the 180-degree reflection deflection direction of the incident detection light is realized, the incident detection light and the transmission light path of the reflected detection light are separated by a certain dislocation distance, and the dislocation distance can be determined by the manufacturing parameters of the pyramid prism.
It is to be noted that the pyramid prism is adopted to reflect the incident detection light, so that the number of light sources used in air detection in the intelligent park can be reduced, the incident detection light generated by the pyramid prism and the reflected detection light are separated by a dislocation distance, and when the anti-scattering mirror reflects side air scattered light of the incident detection light, the propagation of the reflected detection light is not interfered, so that the accuracy of the air detection result of the intelligent park is improved.
Additionally, in some embodiments, detecting the reflected detection light at the contaminated gas absorption band may be performed by:
detecting the light intensity of the reflected detection light on a polluted gas absorption wave band at the pyramid prism to obtain initial reflected detection light intensity;
after the reflection detection light propagates in the air of the park for a section of optical path, detecting the light intensity of the reflection detection light on a polluted gas absorption wave band at a transmitting end to obtain extinction reflection detection light intensity;
and determining the reflection extinction quantity of the reflection detection light on the polluted gas absorption wave band according to the initial reflection detection light intensity and the extinction reflection detection light intensity.
The reflection extinction amount of the reflection detection light is the extinction amount of the reflection detection light on the optical path of the reflection detection light, the reflection extinction amount is the result of extinction effects of absorption of polluted gas and air molecule scattering, the extinction amount interference caused by the air molecule scattering of the intelligent park on the reflection detection air is used as the reflection air scattering amount, and the extinction amount generated by the absorption effect of the polluted gas on the reflection detection light is used as the reflection extinction amount.
When the optical path length of the reflection detection light is equal to that of the incidence detection light, the extinction reflection detection light intensity can be obtained at a dislocation distance of the emitting end of the incidence detection light, which is perpendicular to the optical path direction of the incidence detection light, and at the moment, the optical path of the incidence detection light is parallel to that of the reflection detection light and the optical path of the reflection detection light, and the lengths are equal, but the deflection exists in the 180-degree direction.
The incident extinction amount and the reflection extinction amount are the results of extinction effects of polluted gas absorption and air molecule scattering, and as the incident detection light and the reflection detection light propagate in the air environment of the same intelligent park and the optical path lengths are equal, the absorption effects of the polluted gas on the incident detection light and the reflection detection light are consistent; however, when the incident detection light is subjected to the air scattering effect, the incident air scattering amount of a part of the incident detection light is reduced due to the influence of the anti-scattering mirror on the incident detection light relative to the reflected detection light, so that the incident air scattering amount (namely, the side air scattering amount) of the part can be obtained by comparing the incident extinction amount with the reflected extinction amount.
In step 104, the reflected air scattering amount of the reflected detection light propagating in the air of the park to be detected is determined according to the side air scattering amount and the anti-scattering mirror reflection parameter.
For example, in some embodiments, according to the side air scattering amount and the preset anti-scattering mirror reflection parameter, determining the reflected air scattering amount of the reflected detection light propagating in the air of the park may be implemented by:
determining the anti-scattering proportion of the anti-scattering mirror according to a preset anti-scattering mirror reflection parameter value;
determining the incident air scattering quantity of incident detection light rays transmitted in the air of the park according to the anti-scattering proportion and the lateral air scattering quantity;
and determining the reflected air scattering amount of the reflected detection light rays transmitted in the air of the park according to the incident air scattering amount.
In some embodiments, the extinction interference caused by the air molecular scattering of the smart park on the incident detection air is used as the incident air scattering quantity, and the incident air scattering quantity is equal to the reflected air scattering quantity because the incident detection light and the reflected detection light propagate in the same air environment for the same optical path length, and the reflected detection light is reflected by the incident detection light by the pyramid prism, and the absorption wave bands of the incident detection light and the reflected detection light are also equal.
In some embodiments, the preset anti-scatter mirror reflection parameters may include the following: the reflectivity of the anti-scattering mirror material, the included angle between the normal line of the anti-scattering mirror and the propagation direction of the incident detection light, the area of the anti-scattering mirror and other parameters, and according to the preset anti-scattering mirror reflection parameter value, the anti-scattering ratio can be determined by the following formula:
wherein the method comprises the steps ofFor the anti-scattering ratio, +.>For the reflectivity of the anti-scatter-mirror material, < >>Differential area of curved surface for a point on the anti-scatter mirror,/, for>Is the sine value of the angle between the normal direction at this point and the propagation direction of the incident detection ray, +.>Light propagation path for incident detection, < >>For the perpendicular distance of this point from the optical path of the incident detection light, +.>Is natural circumference rate->The calibration coefficient of the anti-scattering mirror is preset, and the calibration coefficient is constant.
It should be noted that, according to the principle of probability statistics, the air-scattered light of the incident detection light may be regarded as a uniform scattering result in the light advancing direction, that is, the scattered light intensity on the spherical surface centered on the incident detection light emission source is uniform everywhere, and as the spherical radius increases, the scattered light intensity on the spherical surface per unit area decreases, so, according to the positional relationship of the anti-scattering mirror with respect to the incident detection light emission source, and the projected area of the anti-scattering mirror centered on the incident detection light emission source, the proportion of the side air-scattered amount reflected by the anti-scattering mirror (the extinction amount caused by a part of the incident air-scattered light) in the incident air-scattered amount (the extinction amount caused by all the incident air-scattered light) may be determined, where the proportion is the anti-scattering proportion of the anti-scattering mirror, and when the shape and the installation position of the anti-scattering mirror are determined, the anti-scattering proportion is a constant, and the value may be determined according to the above formula.
In some embodiments, the amount of incident air scatter may be determined by:
i.e., the amount of incident air scatter is the product of the amount of side air scatter and the inverse of the anti-scatter ratio, wherein,for the incident air scattering quantity of incident detection light propagating in the air of the park, +.>For the amount of side air scattering of the incident detection light>Is an anti-scattering ratio.
In step 105, the reflection extinction amount is corrected according to the determined reflection air scattering amount, so as to obtain a pollutant gas absorption amount, and the pollutant gas concentration to be detected in the intelligent park is determined according to the pollutant gas absorption amount through a pollutant gas concentration algorithm.
In particular, in some embodiments, the step 105 may be implemented in the following manner, that is:
correcting the reflection extinction amount according to the reflection air scattering amount, namely subtracting the reflection air scattering amount from the emission extinction amount to obtain a corrected result, and correcting the reflection extinction amount to obtain a polluted gas absorption amount;
determining an absorption section corresponding to the polluted gas in the intelligent park;
and determining the concentration of the polluted gas in the air environment of the intelligent park by a preset polluted gas concentration algorithm according to the absorption section corresponding to the polluted gas and the polluted gas absorption quantity.
In some embodiments, the absorption section corresponding to the polluted gas in the intelligent park may be determined according to preset related information of the polluted gas, for example, the absorption section of the polluted gas ozone is 1.124 cubic centimeters per mole, and the polluted gas concentration algorithm in the present application may specifically use the following algorithm formula to calculate the polluted gas concentration, that is:
wherein the method comprises the steps ofFor the concentration of pollutant gases in the air environment of the intelligent park, +.>For the corresponding absorption cross section of the polluted gas,representing the intensity of the reflected light after extinction, ">Detecting light propagation for reflectionContaminant gas uptake of->Is natural logarithmic and is->An optical path for reflecting and detecting light propagating in the air of the intelligent park; after correcting the reflection extinction according to the reflection air scattering quantity, the accurate reflection pollution gas absorption quantity can be obtained>According to the reflected contaminant gas absorption amount->And the concentration calculation of the polluted gas is carried out, so that the interference of air molecular scattering on the air detection process can be eliminated, and a relatively accurate air detection result of the intelligent park is obtained.
Additionally, in some embodiments, referring to fig. 3, which is a schematic diagram of exemplary hardware and/or software of a smart campus air detection device 300 shown in some embodiments of the present application, the smart campus air detection device 300 may include: the anti-scattering module 301, the incident extinction amount determination module 302, the side air scattering amount determination module 303, the air scattering amount determination module 304, and the contaminated gas concentration acquisition module 305 are respectively described as follows:
the anti-scattering module 301 is mainly configured to emit an incident detection light to a pyramid prism preset in the smart park, and an anti-scattering mirror is disposed at a side of the incident detection light, and reflects side scattered light emitted by the incident detection light to the pyramid prism;
the incident extinction amount determining module 302 is mainly used for determining a polluted gas absorption band corresponding to the polluted gas to be detected, and detecting and determining the incident extinction amount of the incident detection light on the polluted gas absorption band;
the side air scattering amount determining module 303 is mainly configured to form a reflected detection light ray parallel to the incident detection light ray after the incident detection light ray is misplaced and reflected by the pyramid prism, detect and determine a reflection extinction amount of the reflected detection light ray on the polluted gas absorption band, and determine a side air scattering amount reflected by the anti-scattering mirror according to the reflection extinction amount and the incident extinction amount;
the reflected air scattering amount determining module 304 is mainly configured to determine, according to the lateral air scattering amount and the anti-scattering mirror reflection parameter, a reflected air scattering amount of the reflected detection light propagating in the air of the park to be detected;
the pollutant gas concentration obtaining module 305 is mainly configured to correct the reflected extinction amount according to the determined reflected air scattering amount, obtain a pollutant gas absorption amount, and determine, according to the pollutant gas absorption amount, a pollutant gas concentration to be detected in the intelligent park through a pollutant gas concentration algorithm.
Furthermore, the application discloses a computer readable storage medium storing a computer program which when executed by a processor implements the smart park air detection method.
The computer-readable medium or machine-readable medium of the present application can be a tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device that implements high-precision proximity switch laser trimming, a computer-readable medium can be a machine-readable signal medium or machine-readable storage medium, and a computer-readable medium can include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a random access memory, a read-only memory, an erasable programmable read-only memory or flash memory, an optical fiber, a portable compact disc read-only memory, an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
Additionally, in some embodiments, reference is made to fig. 4, which is a schematic structural diagram of a computer device for intelligent campus air detection according to an embodiment of the present application. The air detection method in the above-described embodiment may be implemented by a computer device shown in fig. 4, the computer device 400 comprising at least one processor 401, a communication bus 402, a memory 403 and at least one communication interface 404.
The processor 401 may be a general purpose central processing unit (central processing unit, CPU), application-specific integrated circuit (ASIC) or one or more of the intelligent campus air detection methods of the present application.
Communication bus 402 may include a path to transfer information between the aforementioned components.
The Memory 403 may be, but is not limited to, a read-only Memory (ROM) or other type of static storage device that can store static information and instructions, a random access Memory (random access Memory, RAM) or other type of dynamic storage device that can store information and instructions, or an electrically erasable programmable read-only Memory (electrically erasable programmable read-only Memory, EEPROM), a compact disc (compact disc read-only Memory) or other optical disk storage, optical disk storage (including compact disc, laser disc, optical disc, digital versatile disc, blu-ray disc, etc.), magnetic disk or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory 403 may be self-contained and be coupled to the processor 401 via the communication bus 402. Memory 403 may also be integrated with processor 401.
Wherein the memory 403 is used for storing program codes for executing the inventive arrangements and is controlled to be executed by the processor 401. The processor 401 is used to execute program code stored in the memory 403. One or more software modules may be included in the program code. The determination of the concentration of the contaminant gas in the smart park in the above embodiments may be implemented by one or more software modules in the program code in the processor 401 and memory 403.
The communication interface 404 uses any transceiver-like device for communicating with other devices or communication networks, such as ethernet, radio access network (radio access network, RAN), wireless local area network (wireless local area networks, WLAN), etc.
In a specific implementation, as an embodiment, a computer device may include a plurality of processors, where each of the processors may be a single-core (single-CPU) processor or may be a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (e.g., computer program instructions).
The computer device may be a general purpose computer device or a special purpose computer device. In particular implementations, the computer device may be a desktop, laptop, web server, palmtop (personal digital assistant, PDA), mobile handset, tablet, wireless terminal device, communication device, or embedded device. Embodiments of the application are not limited to the type of computer device.
In summary, in the technical scheme provided by the application, the incident detection light is emitted to the pyramid prism preset in the intelligent park, and the anti-scattering mirror is arranged at the side of the incident detection light, so that the side air scattering light can be transmitted to the pyramid prism by the anti-scattering mirror, and the loss of the incident air scattering quantity of part of the incident detection light is reduced; determining a polluted gas absorption wave band corresponding to the polluted gas to be detected, calculating the incident extinction amount of the incident detection light on the polluted gas absorption wave band, and comparing the incident extinction amount with the reflection extinction amount of the reflection detection light transmitted in the same air environment and the same optical path length of the same park on the polluted gas absorption wave band, thereby determining the side air scattering amount of the incident detection light; determining the reflected air scattering amount of the reflected detection light according to the lateral air scattering amount and the reflection parameter of the anti-scattering mirror; and correcting the reflection extinction quantity according to the determined reflection air scattering quantity to obtain an accurate pollution gas absorption quantity, and finally determining the concentration of the pollution gas to be detected in the intelligent park through a pollution gas concentration algorithm.
According to the application, the reflected air scattering quantity of the reflected detection light is determined, the interference caused by the reflected air scattering quantity is removed from the reflected light extinction quantity of the reflected detection light, so that the relatively accurate pollutant gas absorption quantity is obtained, and the pollutant gas concentration in the air of the intelligent park can be accurately determined according to the pollutant gas absorption quantity, so that the influence of the scattering interference on the pollutant air detection precision can be avoided.
While preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (5)
1. An intelligent park air detection method is characterized by comprising the following steps:
transmitting incident detection light to a pyramid prism preset in an intelligent park, and arranging an anti-scattering mirror at the side of the incident detection light, wherein the anti-scattering mirror reflects side scattering light scattered by the incident detection light to the pyramid prism;
determining a polluted gas absorption wave band corresponding to the polluted gas to be detected, and detecting the incident extinction amount of the incident detection light on the polluted gas absorption wave band;
the incident detection light is subjected to dislocation reflection by the pyramid prism to form reflection detection light parallel to the incident detection light, the reflection extinction amount of the reflection detection light on the polluted gas absorption wave band is detected, and the side air scattering amount reflected by the anti-scattering mirror is determined according to the reflection extinction amount and the incident extinction amount; the side air scattering quantity is obtained by subtracting the incident extinction value from the reflection extinction value;
determining the reflected air scattering amount of the reflected detection light rays transmitted in the air of the park to be detected according to the lateral air scattering amount and the anti-scattering mirror reflection parameters;
correcting the reflection extinction amount according to the determined reflection air scattering amount to obtain a polluted gas absorption amount, and determining the concentration of the polluted gas to be detected in the intelligent park according to the polluted gas absorption amount by a polluted gas concentration algorithm;
wherein detecting the incident extinction amount of the incident detection light on the polluted gas absorption band includes:
detecting the light intensity of the incident detection light on a polluted gas absorption wave band at the emitting end of the incident detection light to obtain initial incident detection light intensity;
detecting the light intensity of the incident detection light on a polluted gas absorption wave band at the pyramid prism to obtain extinction incident detection light intensity;
determining the incident extinction amount of the incident detection light on a polluted gas absorption wave band according to the initial incident detection light intensity and the extinction incident detection light intensity;
wherein detecting the reflection extinction amount of the reflection detection light on the polluted gas absorption band includes:
detecting the light intensity of the reflected detection light on a polluted gas absorption wave band at the pyramid prism to obtain initial reflected detection light intensity;
after the reflection detection light propagates in the air of the park for a section of optical path, detecting the light intensity of the reflection detection light on a polluted gas absorption wave band at a transmitting end to obtain extinction reflection detection light intensity; the optical path length of the reflection detection light rays propagating in the air of the park is equal to the optical path length of the incidence detection light rays propagating in the air of the park;
determining the reflection extinction amount of the reflection detection light on a polluted gas absorption wave band according to the initial reflection detection light intensity and the extinction reflection detection light intensity;
wherein, according to the side air scattering amount and the anti-scattering mirror reflection parameter, determining the reflected air scattering amount of the reflected detection light propagating in the air of the park comprises:
determining the anti-scattering proportion of the anti-scattering mirror according to a preset anti-scattering mirror reflection parameter value;
wherein the anti-scatter ratio is determined by:
wherein the method comprises the steps ofFor the anti-scattering ratio, +.>For the reflectivity of the anti-scatter-mirror material, < >>Differential area of curved surface for a point on the anti-scatter mirror,/, for>Is the sine value of the angle between the normal direction at this point and the propagation direction of the incident detection ray, +.>Light propagation path for incident detection, < >>For the perpendicular distance of this point from the optical path of the incident detection light, +.>Is natural circumference rate->Is a preset anti-scattering agentThe calibration coefficient of the shooting mirror is a constant;
determining the incident air scattering quantity of incident detection light rays transmitted in the air of the park according to the anti-scattering proportion and the lateral air scattering quantity;
and determining the reflected air scattering amount of the reflected detection light rays transmitted in the air of the park according to the incident air scattering amount, wherein the incident air scattering amount is equal to the reflected air scattering amount.
2. The method of claim 1, wherein determining the concentration of the contaminant gas to be detected in the smart campus by a contaminant gas concentration algorithm based on the uptake of the contaminant gas comprises:
determining an absorption section corresponding to the polluted gas in the intelligent park;
and determining the concentration of the polluted gas in the air environment of the intelligent park through a polluted gas concentration algorithm according to the absorption section corresponding to the polluted gas and the polluted gas absorption quantity.
3. An intelligent park air detection device, which is characterized in that the intelligent park air detection device adopts the intelligent park air detection method as claimed in claim 1 to perform air detection, and is characterized in that the intelligent park air detection device comprises:
the anti-scattering module is used for emitting incident detection light to a pyramid prism preset in the intelligent park, an anti-scattering mirror is arranged at the side of the incident detection light, and the anti-scattering mirror reflects side scattering light emitted by the incident detection light to the pyramid prism;
the incident extinction amount determining module is used for determining a polluted gas absorption wave band corresponding to the polluted gas to be detected and detecting the incident extinction amount of the incident detection light on the polluted gas absorption wave band;
the side air scattering quantity determining module is used for forming reflected detection light rays parallel to the incident detection light rays after the incident detection light rays are subjected to dislocation reflection through the pyramid prism, detecting reflection extinction quantity of the reflected detection light rays on the polluted gas absorption wave band, and determining the side air scattering quantity reflected by the anti-scattering mirror according to the reflection extinction quantity and the incident extinction quantity;
the reflected air scattering quantity determining module is used for determining the reflected air scattering quantity of the reflected detection light rays transmitted in the air of the park to be detected according to the side air scattering quantity and the anti-scattering mirror reflection parameters;
and the polluted gas concentration acquisition module is used for correcting the reflection extinction quantity according to the determined reflection air scattering quantity to obtain polluted gas absorption quantity, and determining the concentration of the polluted gas to be detected in the intelligent park through a polluted gas concentration algorithm according to the polluted gas absorption quantity.
4. A computer device comprising a memory storing code and a processor configured to obtain the code and to perform the intelligent campus air detection method of any one of claims 1, 2.
5. A computer readable storage medium storing a computer program, which when executed by a processor implements the intelligent park air detection method according to any one of claims 1, 2.
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