CN-121994553-A - Detection method for analyzing influence of plant physiological state on comprehensive benefit of indoor restorative environment health

CN121994553ACN 121994553 ACN121994553 ACN 121994553ACN-121994553-A

Abstract

The invention discloses a detection method for analyzing the influence of plant physiological states on comprehensive benefits of indoor restorative environment health, which relates to the technical field of plant environment health and comprises the following steps of S1, constructing an indoor model grid for distributing plants; step S2, obtaining an air sample, detecting the components and the concentration of the air sample, step S3, predicting the diffusion rate of the components of the air substances, and step S4, calculating the coupling diffusion effect of the substances in the indoor air. According to the invention, by applying a model grid mixing strategy, exponential distribution of the speed, temperature and concentration of the plant volatile substances is accurately captured, the diffusion rule of the flowing substances is predicted by combining the coupling effect of the concentration gradient and turbulent diffusion of the volatile substances, the diffusion effect of the multi-component plant volatile substances is simulated, the indoor environment of the distributed plants is accurately detected, the influence of the physiological state of the plants on the health of the indoor environment is judged, and the influence of the plant volatile substances on the physiological state of a human body is conveniently detected.

Inventors

LI TONGYU
XUE BINXIA
WANG CHUNLONG
XIAO YIFU
Zhai changqing
WANG JIA
ZUO XI
WANG ZEHUA

Assignees

哈尔滨工业大学
黑龙江省城市规划勘测设计研究院

Dates

Publication Date: 20260508
Application Date: 20260128

Claims (10)

1. A detection method for analyzing the effect of plant physiological state on the comprehensive benefit of indoor restorative environmental health, characterized by comprising the following steps: S1, constructing an indoor model grid for distributing plants, discretizing an indoor space into a set of unit grids, and simulating indoor air flow and air quality change; S2, arranging an air sampling device indoors according to the model grid constructed in the step S1, acquiring an air sample, detecting the components and the concentration of plant volatile substances in the sample by utilizing a gas chromatograph and a mass spectrometer, and identifying beneficial plant volatile substances in the air for promoting the human body state; S3, calculating the gas component concentration data and the grid data obtained in the step S2 through a turbulence model, and predicting the diffusion rates of different plant volatile matter components in flowing air; s4, according to the components and the concentrations of the plant volatile substances detected in the step S2, using a component transport model to treat the coupling diffusion effect of different plant volatile substances in indoor air, predicting the spatial distribution and the time evolution of each substance in the flow, and predicting the concentration of the plant volatile substance distribution; and S5, constructing an indoor simulation model by combining the turbulence model in the step S3 and the component transportation model in the step S4, and carrying out three-dimensional numerical simulation on the diffusion rule of the plant volatile substances in the indoor.
2. The method for analyzing the influence of plant physiological states on comprehensive benefits of indoor restorative environmental health according to claim 1, wherein the building of the indoor model grid in step S1 comprises the following steps: S11, capturing the structured and semi-structured grids flowing in the boundary layer by using prismatic layer grids near the plant surface and the ventilation opening, generating a plurality of layers of prismatic layer grids with high anisotropism, and encrypting the boundary layer; Step S12, filling a space formed by a complex geometric shape by using an unstructured tetrahedral mesh in a main flow area; And S13, generating pyramid grids and polyhedral grids in the connection areas of the prismatic layer grids and the external tetrahedral grids as buffering.
3. The method for analyzing the influence of plant physiological states on comprehensive benefits of indoor restorative environmental health according to claim 1, wherein the prismatic layer grid establishment of step S11 comprises the steps of: step S111, the total thickness is obtained by setting the first layer grid height which is the distance from the center of the first layer grid to the wall surface and determining the layer number, and the product of the height and the layer number is calculated, so that the total thickness covers the boundary layer; step S112, performing transition between the grids of the multi-layer prism layer by setting the growth rate, namely the thickness ratio of the adjacent two-layer grids.
4. The method for detecting the influence of the physiological state of a plant on the comprehensive benefit of indoor restorative environmental health according to claim 1, wherein the indoor air sampling in the step S2 comprises the following steps: S21, distributing foliage plants and flowering plants in an indoor environment, and respectively arranging gas samplers in grids corresponding to the model grids in a flowering phase and a non-flowering phase state of the flowering plants to obtain air samples at different grids; s22, separating different plant volatile substances in gas in a chromatographic column by entering an acquired air sample into a gas chromatograph, and enabling different substances to flow out at different times; And S23, carrying out ionization and fragmentation treatment on different substances separated by a gas chromatograph by using a mass spectrometer, identifying the components and the content of the substances by detecting the mass-to-charge ratio of fragments, and detecting the plant volatile substances promoting the human body state.
5. The method according to claim 1, wherein the setting of the turbulence model in the step S3 comprises the steps of: s31, obtaining a turbulence viscosity equation through an average strain rate tensor and a rotation rate tensor, restraining turbulence viscosity positive, and generating a new turbulence energy equation based on a standard turbulence model; And S32, deriving a dissipation rate equation according to the precise transportation equation of the vortex pulsation, substituting the dissipation rate equation into the turbulence energy equation in the step S31, generating a new turbulence model, and correcting the turbulence model.
6. The method for detecting the influence of plant physiological states on comprehensive benefits of indoor restorative environmental health according to claim 1, wherein the construction of the component transportation model in the step S4 comprises the following steps: s41, setting boundary conditions by setting the plant surface as a constant quality source item, and classifying the volatilization rates of the foliage and floral plants according to the flowering period and the non-flowering period; step S42, setting indoor constant temperature at 26.85 ℃, wherein the change of gas density is only caused by the mixing of components, the influence of thermal expansion effect is eliminated, and the influence of the real-time change of light intensity and temperature on the volatilization rate is eliminated; and S43, processing the mutual coupling effect between the diffusion of different plant volatile substances by adopting a Maxwell-Stefan equation, and predicting the diffusion of the plant volatile substances.
7. The method according to claim 6, wherein the process of Maxwell-Stefan equation in step S43 comprises the steps of: step S431, calculating to obtain the average speed among different substances according to the obtained diffusion speeds of different plant volatile substances; Step S432, calculating to obtain mole fractions of different components according to the obtained plant volatile matter components; And S433, combining the average speeds and the mole fractions of different plant volatile substances in the step, calculating by using the Maxwell-Stefan diffusion coefficients to obtain the diffusion driving force of the corresponding components, predicting the diffusion change of the different plant volatile substances according to the diffusion driving force of the different plant volatile substances, and predicting the diffusion state of the plant volatile substances in a room and the distribution concentration of different areas.
8. The method for detecting the influence of plant physiological states on comprehensive benefits of indoor restorative environmental health according to claim 1, wherein the building of the indoor simulation model in the step S5 includes the following steps: S51, processing the obtained component and concentration data of the plant volatile substances by importing a three-dimensional model and repairing micro features of grid division and combining the set model grid and a turbulence model; step S52, performing iterative computation according to the setting of the step S51 until the solution converges, and performing solution computation; step S53, analyzing the calculation structure of step S52, and converting the calculated data into visual patterns.
9. The method according to claim 8, wherein the solving and calculating in the step S52 comprises the steps of: Step 521, a preset pressure field is preset, and a momentum equation is solved under the pressure field to obtain a preset speed field; Step S522, constructing a pressure correction equation according to the error that the velocity field does not meet the continuity, and correcting the set pressure field, and updating the velocity field through the corrected pressure field to enable the velocity field to meet the continuity equation; step S523, repeating the above process until the solution converges by taking the corrected pressure field and the corrected velocity field as new preset values.
10. The method for analyzing the influence of plant physiological states on comprehensive benefits of indoor restorative environmental health according to claim 8, wherein the construction of the visual pattern in step S53 includes the following steps: Step S531, selecting a histogram and a graph to convey information through the obtained plant volatile substance composition, concentration and diffusion rate data, and displaying the data in the grid by combining the established model grid; Step S532, performing rendering processing on the model according to the application design principle, and highlighting main data points and areas by using the emphasized colors.

Description

Detection method for analyzing influence of plant physiological state on comprehensive benefit of indoor restorative environment health Technical Field The invention relates to the technical field of environmental health detection, in particular to a detection method for analyzing the influence of a plant physiological state on the comprehensive benefit of indoor restorative environmental health. Background The volatile organic compounds of the plants form a complex chemical communication and defense system, have obvious benefits on the plants themselves, other organisms and even the whole ecological system and human beings, and play roles in insect pest resistance, disease resistance and pollination. Simultaneously, the humidity and the temperature of the surrounding environment can be adjusted through the transpiration effect, and especially the plant has the effects of reducing the temperature and increasing the humidity in summer, so that the thermal comfort is improved. In addition, the plants can improve the air quality, and part of the plants have the effect of releasing oxygen and negative oxygen ions and other plant volatile matters beneficial to health, thereby being beneficial to purifying the air. The health care product has remarkable health care effect when human is inhaling plant volatile substances, mainly is terpene substances, can reduce salivary cortisol level, relieve pressure, reduce sympathetic nerve activity, strengthen parasympathetic nerve activity, relax people, relieve anxiety and depression, promote active emotion, regulate stress states of nervous systems, physiological systems and the like through multi-dimensional sensory synergy passive perception and inhalation of beneficial health substances, promote forward psychological-physiological interaction, and realize health benefit promotion and improvement of work and learning efficiency. As the plant volatile organic compounds are beneficial to people, green plants are generally arranged in indoor places such as classrooms, scientific researches, offices, household environments and the like, the health supportability of the indoor environments is improved by utilizing substances emitted by plants, a set of indoor space environments with specific dimensions and shapes is developed, and a method for detecting the health supportability of the plant physiological states and the indoor environments and the correlation and response of the plant physiological states and the health of human bodies is a key for revealing the plant dynamic benefit mechanism, and is beneficial to providing scientific decision basis for the design and layout of indoor functional plant landscapes. The common detection method is to monitor the plant state by using a contact type physical sensor, a non-contact type optical and remote sensing technology, mainly to measure the plant body environment, and is inconvenient to measure the overall environment health promotion effectiveness of the indoor space, so that the error of the detection result is large, and the scientificity, the value and the accuracy of human factor matching of the detection result are reduced. Disclosure of Invention The invention aims to provide a detection method for analyzing the influence of plant physiological states on the comprehensive benefit of indoor restorative environment health, so as to solve the problems in the background technology. In order to achieve the purpose, the invention provides the following technical scheme that the detection method for analyzing the influence of the physiological state of the plant on the comprehensive benefit of indoor restorative environment health comprises the following steps: S1, constructing an indoor model grid for distributing plants, discretizing an indoor space into a set of unit grids, and simulating indoor air flow and air quality change; S2, arranging an air sampling device indoors according to the model grid constructed in the step S1, acquiring an air sample, detecting the components and the concentration of plant volatile substances in the sample by utilizing a gas chromatograph and a mass spectrometer, and identifying beneficial plant volatile substances in the air for promoting the human body state; S3, calculating the gas component concentration data and the grid data obtained in the step S2 through a turbulence model, and predicting the diffusion rates of different plant volatile matter components in flowing air; s4, according to the components and the concentrations of the plant volatile substances detected in the step S2, using a component transport model to treat the coupling diffusion effect of different plant volatile substances in indoor air, predicting the spatial distribution and the time evolution of each substance in the flow, and predicting the concentration of the plant volatile substance distribution; and S5, constructing an indoor simulation model by combining the turbulence model in the step S3 and the componen