46 results about "Environmental systems" patented technology

In various examples, a simulation platform generates a simulated driving environment by processing road map data to derive the location of wear-related visual artifacts for sections of a lane surface. Using map data, the simulation platform generates texture maps for aesthetic road rendering, which are used to apply textures to a 3D polygon topology mesh. The simulation platform generates visual artifacts representing the wear and tear of the road surface based on a calculation of one or more lane feature distances derived from the map data. The simulation platform calculates distances associated with reference line data derived from an image to render a texture of one or more lane features.The spacing is used to determine how the appearance of the texel is adjusted to include wear-related visual artifacts when displayed on a lane of the simulated driving environment.

The invention relates to the technical field of historic site restoration, and discloses a historic site surrounding landscape atmosphere perception simulation and historical authenticity reconstruction method, which comprises the following steps: (S1) carrying out site region multi-dimensional data acquisition and integration; (S2) analyzing historical authenticity factors and extracting value features; (S3) constructing a landscape atmosphere perception index system and quantifying factors; (S4) performing multi-period historical scene simulation and atmosphere perception modeling; and (S5) carrying out landscape atmosphere perception simulation analysis and authenticity verification. According to the historic site surrounding landscape atmosphere perception simulation and historical authenticity reconstruction method, multi-dimensional data acquisition and integration and historical element analysis are performed, the relevance between a site and surrounding natural, artificial and humanistic environments is systematically reconstructed, and the defect that only a single building is focused in the prior art is overcome; for example, oblique photography and ancient book map fusion are utilized to restore the spatial topological relation among the ruins, historical water systems and ceremony paths, and a complete environment system supporting historical functions is formed.

The invention relates to the technical field of gas pipeline operation monitoring, in particular to a gas pipeline operation monitoring system based on multi-source data detection, which comprises the following steps: constructing an operation monitoring agent and integrating multi-source data (environment interference parameters, transmission data quality indexes and historical monitoring decision indexes) to generate state vectors; the system can accurately sense a complex operation environment, introduces a comprehensive reward function including sensitive area consequences, maintenance cost optimization and environmental friendliness, performs hierarchical reward calculation on a sensitive area, introduces data value density evaluation on the maintenance cost, and integrates full-chain energy consumption and carbon emission management and control on environmental friendliness. The system can quantify comprehensive benefits of a monitoring strategy from multiple dimensions, continuous optimization of action combination is achieved, and based on feedback of a reward function, an intelligent agent can dynamically adjust the weight of a sensor, a fusion algorithm and a working mode.

The application discloses a kind of based on Copula function's urban water, energy and environmental system optimization decision management method, comprising: S1. the Copula joint distribution function of water environment capacity and available energy amount in urban water is constructed;S2. the resource optimization allocation and joint risk management model of urban water, energy and environmental system is established;S3. the resource optimization allocation and joint risk management model of urban water, energy and environmental system is solved;The method realizes the optimization allocation and joint risk management of urban water-energy-environment system water and energy under uncertain conditions.Provide urban water-energy-environment system resource optimization allocation scheme and long-term planning scheme of sewage treatment process under different risk scenario combinations on the basis of maximum economic benefit, and help decision makers better realize the trade-off between joint default risk and system benefit, to realize urban risk controllable and water-energy-environment collaborative development provides scientific method.

Smart home devices may use a technique known as “power stealing” in order to steal power from an external environmental system. For example, thermostats may steal power from an HVAC system. Different algorithms and techniques may be used for efficiently stealing power from the HVAC system, each of which may provide different levels of power to the thermostat at different times. The smart home device may test an external system to determine which power stealing methods are compatible and calibrate various power stealing parameters. A calibration routine may sample at a plurality of discrete intervals while increasing a test load to determine a maximum current limit and an optimal power stealing method.

The application discloses a kind of AuNPs@ polyimide SERS heating chip preparation and application method, through interface self-assembly technology preparation large-scale AuNPs array film, and transfer to the polyimide film with heating system, form AuNPs@ polyimide heating film as APHC for SERS chip, in situ heat enrichment is carried out to TNT molecule by APHC, and sample can be effectively collected from mixed system by simple operation.This flexible, heatable SERS chip has great significance for efficient, sensitive and in-situ detection of target molecules in complex environmental systems.

The invention belongs to the technical field of hazardous chemical substance analysis, and particularly relates to a hazardous chemical substance basic informatization data analysis system and method.The hazardous chemical substance basic informatization data analysis system comprises a hazardous substance basic information data acquisition module, a data storage module, a data analysis module, an early warning mechanism module, a visual display module and a user identity information management module; the system is used for collecting relevant basic information of dangerous goods in real time, and the basic information comprises material properties, storage conditions, real-time monitoring data and historical data. The hazardous chemical substance storage environment is monitored in real time through the sensor assembly, the system can find potential risks such as temperature, humidity and gas concentration abnormities in time, so that early warning is given out in advance, accidents are reduced, meanwhile, the early warning mechanism module is arranged, intelligent monitoring and early warning of environment parameters are achieved, and the safety and reliability of the system are improved. A worker can customize an early warning rule according to own requirements, so that timely response is ensured when the environmental parameters are abnormal, and safety is guaranteed.

The invention relates to the technical field of intelligent water treatment, in particular to a sewage treatment plant treatment efficiency evaluation and dynamic simulation system based on a 3E1S theory, a core theory layer is used for defining interaction rules among an environment system, an energy system, an economic system and a social system on the basis of a 3E1S theory framework; the core technology layer is used for loading various algorithm models and operation environments; the data layer is used for collecting multi-source heterogeneous data in four dimensions of environment, energy, economy and society; the calculation layer is used for calling a related algorithm model to quantify resource waste and an efficiency value based on the collected multi-source heterogeneous data, dynamically simulating a governance path in combination with a preset strategy library and a self-defined strategy, and carrying out iterative optimization to obtain an optimal strategy packet; and the decision-making layer is used for presenting cooperation states among the environment system, the energy system, the economic system and the social system in a visual early warning mode. According to the invention, full-chain and multi-system collaborative treatment and dynamic optimization of the sewage treatment plant can be realized.

The utility model provides an ocean engineering material high flux corrosion test system, the test system comprises a loading system and an environmental system, the loading system comprises a loading support, a loading device, a clamp assembly and a controller, the environmental system comprises an environmental box, a liquid medium regulation and control device and a gas medium regulation and control device, the liquid medium regulation and control device and the gas medium regulation and control device are respectively connected with the environment box, the environment box is arranged on the loading bracket, is used for placing a test sample and can load a liquid medium and a gas medium for testing, and the clamp assembly penetrates through the environment box to connect the test sample with the loading bracket and the loading device. Through the arrangement of the high-flux corrosion test system, the corrosion environment of global typical sea areas can be simulated, meanwhile, constant stress load, slow strain load and alternating cyclic load can be independently loaded on batch samples, automatic monitoring of the whole test process can be achieved, comprehensive coordination of factors such as different environments and loads is achieved, and the test efficiency is improved. And the corrosion fatigue test efficiency is improved.

The application discloses a cross-medium area comprehensive environmental risk assessment method fusing an atmospheric and water risk field, relates to the technical field of environmental assessment, and comprises the following steps: based on environmental risk assessment requirements, constructing a cross-medium time sequence anchoring zone, forming a unified time axis by fusing wind field data and water flow data, extracting a phase difference of a pollutant concentration peak section, and generating a phase index list. The application realizes time, space and energy coupling analysis of air and water body risk processes by constructing a cross-medium time sequence anchoring zone, a spatial superposition kernel list and a gas-liquid exchange channel fingerprint, dynamically tracks a risk transmission path and identifies an energy aggregation area; meanwhile, the application realizes active dispersion and dynamic balance of risk energy by coupling abnormal spectrum energy budget and a breathing type phase inversion traction, and effectively improves the accuracy of risk assessment and the stability of an environmental system.

The invention discloses a coupling coordination degree evaluation method and system based on a hydrological environment, drainage and waterlogging prevention facilities and a social system, and belongs to the field of system coupling coordination degree evaluation systems under the background of urban waterlogging. From two analyses, the first criterion layer of the hydrological environment system is rainfall, terrain and water permeability, and the second index layer is annual rainfall, gradient and comprehensive runoff coefficient. The drainage and waterlogging prevention facility system criterion layer is drainage facility and emergency rescue accessibility, the drainage facility index layer is drainage pipe network density, drainage pipe network capacity, pump station capacity and discharge passage density, and the emergency rescue index layer is fire-fighting emergency rescue accessibility. The criterion layer of the social system is economic and safety requirements, the index layer of the economic layer is total citizen production value and house price, and the indexes of the safety requirements are population density, schools and hospitals. And an index weight is calculated by adopting a subjective weight determination method and an objective weighting method, the collaborative development degree of the three systems is quantified, and quantitative evaluation of the coupling coordination degree of the three systems in the region is realized.

The invention relates to a watershed social economy-water environment model coupling simulation method and device, and the method comprises the steps: building a comprehensive simulation strategy integrating the material flow, economic input and output and hydrology and water quality processes according to the multi-module modeling demands of a watershed social economy-water environment system; the method aims to provide technical support for systematic evaluation and optimization design of subsequent regulation and control schemes in three aspects of economic benefit, resource utilization and environment quality. Besides, aiming at the key problems of complex multi-substance coupling relationship, lack of object-value association relationship and the like, the invention establishes a basin social economy-water environment complex system simulation model and a verification method of the model, so that a tool basis is provided for basin evaluation and regulation.

The present application relates to an environmental diagnosis method and device based on numerical simulation and SVM efficient modeling, belonging to the technical field of soil-groundwater pollution prevention and control and risk management, the environmental diagnosis method comprises: selecting the related characteristic variable related to the groundwater environment state and the space-time evolution, the environmental diagnosis model based on numerical simulation and SVM efficient modeling is established for the complex groundwater environment system under the typical condition framework, the reliable diagnosis prediction of the soil and groundwater environment state, the evolution process and the related influence under the premise of meeting the given condition framework in different application scenes can be realized simply and conveniently, the accuracy, efficiency and practicability of the evaluation and prediction of the environmental evolution and risk level of the complex groundwater system are improved, which provides strong support for the protection of water and soil environment system and the safe use of resources, especially the precise prevention and repair of soil and groundwater pollution and the efficient management and control of risk, and has important practical value.

The invention discloses a high confining pressure visual PDC drill bit rock breaking experiment device and method.The device comprises an environment system, a support system and a rock cutting system, the support system is used for supporting the rock cutting system, and the environment system is used for providing drilling fluid and drilling pressure for the rock cutting system; the rock cutting system comprises a high-pressure sealing cavity and a drill column system, the high-pressure sealing cavity (7) is of a cylinder structure with a hollow hole, the high-pressure sealing cavity is sleeved with a rock peeping device which can move along the peripheral face of the high-pressure sealing cavity and is provided with an annular inner hole, and the rock peeping device and the high-pressure sealing cavity are kept in sliding sealing; a through hole is formed between the wall face of the rock peeping device and the annular inner hole of the rock peeping device to serve as an observation window, and sealing glass is arranged on the observation window. A corresponding method is provided, the confining pressure borne by a rock sample under a deep stratum can be simulated, and the effect of a rock breaking experiment is improved.

The invention relates to the technical field of environment regulation and control, in particular to a plant root domain microclimate environment regulation and control method capable of adaptively regulating moisture and heat, which comprises the following steps: preparing a bionic microelectrode array capable of specifically sensing a root electric signal; constructing an electric signal-chemical signal conversion layer; printing a multi-channel bionic catheter network with a fractal structure and assembling a photo-thermal response micro-valve; and finally, integrating the intelligent microcapsule and the microbial system to form a functional module. According to the method, a signal is efficiently captured through a graphene-membrane protein interface, the signal is converted into a chemical instruction through a ferrocene / heme system, a liquid crystal valve is driven to regulate and control the water and gas flux in a fractal network, and the phase change heat storage and self-repairing functions of microcapsules are combined; an intelligent root domain environment system capable of dynamically responding to plant physiological needs, resisting environmental stress and promoting microbial symbiosis is constructed in a cooperative mode, and the water utilization efficiency and the ecological restoration effect are remarkably improved.

The invention discloses a multi-scale regional resource environment system coupling coordination degree evolution evaluation regulation and control method, relates to the technical field of artificial intelligence and computer application, and aims to solve the problem that a traditional decision support method is insufficient in static property and innovativeness when coping with a high-coupling and dynamic evolution complex system. According to the method, firstly, various functional units in a research area and interaction relations thereof are constructed into a function-structure dynamic graph, then, a graph neural network is adopted to characterize the dynamic graph, a global embedding vector capable of comprehensively reflecting the current coupling coordination state of a system is generated, the core is a double-layer self-adaptive regulation and control model, and the overall embedding vector can comprehensively reflect the current coupling coordination state of the system. And the inner layer is cyclically utilized for reinforcement learning, and an optimal conventional regulation and control strategy is learned in a preset regulation and control action space. According to the invention, the regulation and control system not only can adapt to environmental changes, but also can realize self-evolution of the strategy toolbox, and effectively improves scientificity, foresight and innovativeness of complex area system management.

A horticultural environment system includes a controlled environment for accommodating plants, including sensors that respectively monitor an environmental condition of the controlled environment and an external environment, an actuator operable to open or close the controlled environment to the external environment and a control system configured to receive sensor data from a first and a second sensor, to identify a difference in the environmental condition between the controlled environment and a setpoint. If the difference is greater than a predetermined amount, the control system is configured to determine, from the sensor data from the second sensor, a change to the difference upon the controlled environment being opened to the environmental condition of the external environment. If the control system determining the change reduces the difference, the control system is configured to trigger operation of the actuator to open the controlled environment to the external environment.

The present application relates to the technical field of intelligent water treatment, and particularly relates to a sewage treatment plant governance efficiency evaluation and dynamic simulation system based on 3E1S theory, a core theory layer is used to define the interaction rules among the environment system, the energy system, the economic system and the social system based on the 3E1S theory framework; a core technology layer is used to load multiple algorithm models and operating environments; a data layer is used to collect multi-source heterogeneous data in four dimensions of environment, energy, economy and society; a calculation layer is used to call relevant algorithm models to quantify resource waste and efficiency values based on the collected multi-source heterogeneous data, and dynamically simulate the governance path combined with a preset strategy library and a self-defined strategy, and iteratively optimize to obtain an optimal strategy package; a decision layer is used to present the coordination state among the four systems of the environment system, the energy system, the economic system and the social system through a visual early warning mode. The present application can realize the collaborative governance and dynamic optimization of the whole chain and multiple systems of the sewage treatment plant.

The invention relates to the field of electrochemical testing of environmental systems under the action of multiple factors such as medium temperature, stress, multi-salt and humidity, in particular to an electrochemical testing electrode device applied to medium-temperature, high-salt and humid environments to realize stress loading. The working electrode is placed in an inner cavity of the quartz tube located on the inner side, the reference electrodes are placed in through holes in the upper surface, the lower surface and the bottom surface of the tube wall of the quartz tube located on the inner side, and the four reference electrodes with the same diameter are arranged around the working electrode; the counter electrode is placed between the two coaxial quartz tubes, and the counter electrode is annularly arranged around the working electrode in a surrounding manner; the cross-shaped fixing bracket is arranged in the groove of the working electrode, four edges of the cross-shaped fixing bracket respectively correspond to the semicircular and rectangular through holes and are matched with the semicircular holes, and the gasket and the stainless steel nut are sequentially mounted on the part, extending out of the semicircular and rectangular through holes, of the cross-shaped fixing bracket. The problems that a high-resistance severe environment formed by medium temperature and multiple salts is very difficult to realize testing and the like are solved.

The application provides a method for inferring molecular transformation of organic matter in an environmental system, comprising: obtaining multiple samples of the same environmental system; determining the molecular formula and relative abundance of the organic matter in each sample; constructing a molecular formula library according to the determined molecular formula of all samples; calculating the molecular difference of each molecular pair in the molecular formula library; constructing a first molecular difference library according to all molecular differences; calculating the correlation coefficient of the molecular pair corresponding to each molecular difference according to the relative abundance; forming the molecular difference corresponding to the molecular pair with the correlation coefficient greater than or equal to a first preset value into a second molecular difference library; calculating the significance coefficient of each molecular difference in the second molecular difference library with the second proportion greater than the first proportion; and screening the molecular difference with the significance coefficient less than a second preset value as the molecular transformation of the environmental system. The method for inferring the molecular transformation of the organic matter in the environmental system is simple and convenient, can quickly and effectively infer the molecular transformation, and has high reliability.

The invention discloses a polyester fiber surface modification method adaptive to an environment-friendly system, and belongs to the field of fiber modification. The polyester fiber surface modification method comprises the following steps: immersing a polyester fiber into a carbon dot precursor solution, and carrying out microwave irradiation treatment to obtain a carbon dot modified fiber; and immersing the carbon dot modified fiber in an impregnation liquid to obtain the modified polyester fiber. The invention provides a green surface treatment strategy based on microwave-assisted carbon dot modification in order to overcome the defect of interface bonding performance of polyester fibers and a rubber matrix and solve the problem of environmental pollution existing in a traditional resorcinol-formaldehyde-latex (RFL) impregnation system. According to the method, rich functional groups on the surfaces of the carbon dots are utilized, in-situ modification of the carbon dots is achieved on the surface of the polyester fiber through a microwave process, and the surface roughness and chemical polarity of the polyester fiber are effectively improved on the premise that the mechanical property of a body of the polyester fiber is not affected.

The invention discloses a systematic risk assessment method for mangrove forest loss, and belongs to the field of ecological environment system risk assessment. The implementation method comprises the following steps: acquiring index data covering multiple dimensions of mangrove forest dynamics, climate change, social and economic development and government government; constructing an approximation degree matrix among the indexes, and quantifying a cooperative relationship among different systems; determining a cluster structure of the systematic risk space based on the maximum network modularity; calculating index betweenness centrality to identify a key index playing a role of a bridge in risk propagation; depicting a propagation path of systematic risks caused by mangrove forest degradation; establishing a multi-dimensional evaluation framework containing feature vector centrality and complexity, wherein the multi-dimensional evaluation framework is used for identifying key indexes which have a driving effect or a dependency relationship on system development; and formulating a policy priority sequence of the low-complexity region and the low-feature vector centrality region, identifying key indexes and intervention paths for relieving risks, and realizing dynamic assessment of systematic risks caused by mangrove forest loss.

The invention relates to the technical field of attitude control, in particular to a propulsion control method, system and device applied to an underwater robot. According to the method, a sigma point of an unscented Kalman filtering process is obtained through an environment system state vector of a robot, and an adjustment limit vector of a sampling moment is obtained according to numerical fluctuation of different dimensions; a confusion degree evaluation index is obtained according to the unstable condition of continuous change of the adjustment limit vector; and performing self-adaptive regulation and control on the switching gain through the deviation condition of the current and initial limiting ranges and chaos degree evaluation, and outputting a control signal again in combination with the adjustment of the sampling frequency by the chaos degree evaluation. According to the method, in the process of adjusting the switching gain and the sampling frequency through the continuous environment interference chaos condition, the gain is improved, so that the system is rapidly converged, meanwhile, the limitation adjustment is considered, the jitter condition of control output is reduced, and the adjustment control of the attitude of the propulsion action of the AUV at each time is more accurate and efficient.

The application discloses a high-temperature pressure-bearing hydrogen mixed in-situ creep fatigue test system based on digital twinning, which comprises a host and environment system, a digital twinning control platform, a vacuum pump, an argon source, a hydrogen source and a data acquisition system; the host and environment system comprises a host and an environment system, the host comprises a host support and a load applying device, a test piece is borne in the environment system, and the load applying device is used for applying mechanical load to the test piece in the environment system; the environment system comprises a heating device and a test piece containing device, the test piece is placed in the test piece containing device, the high-temperature environment is provided by the heating device, and the test piece containing device is connected with the argon source, the hydrogen source and the vacuum pump; the digital twinning control platform is used for controlling the safe operation and maintenance of the whole high-temperature pressure-bearing hydrogen environment, and the data acquisition system is used for collecting experimental data; the high-temperature pressure-bearing hydrogen mixed in-situ creep fatigue test system based on digital twinning can realize in-situ creep fatigue performance test of a material under a high-temperature hydrogen mixed environment.

The invention relates to the field of environment adjustment, and discloses a CT machine room environment intelligent adjustment method and system based on the Internet of Things, and the method comprises the steps: positioning at least one to-be-adjusted environment node in a CT machine room based on an Internet of Things sensing network, and obtaining a to-be-adjusted point information set; wherein the to-be-adjusted node information comprises a to-be-adjusted node type, a to-be-adjusted node position and a local environment topological graph; the local environment topological graph represents a topological structure of a local CT machine room environment where the to-be-adjusted node is located; collecting real-time environment parameter information; wherein the real-time environment parameter information comprises at least one of temperature and humidity sensor node data and power load sensor node data. The CT machine room environment is monitored in real time through the Internet of Things sensing network, the system can accurately analyze and adjust the environment according to real-time environment parameter information, normal operation of equipment in the machine room is guaranteed, human intervention is reduced, and the automation level is improved.

The present application relates to the field of environmental system engineering and information processing technology, and provides a method for coordinated evaluation of urban 3E system based on multi-source data fusion, which comprises the following steps: obtaining provincial scale energy consumption data, urban scale energy consumption data, economic development data, environmental pollution data and night light remote sensing data; using the proportion of night light brightness to spatially downscale and decompose the provincial energy consumption data to obtain the estimated value of urban scale energy consumption, construct urban scale 3E subsystems, and standardize the evaluation indexes in each subsystem; constructing a dynamic entropy weight model with a time correction factor, calculating the dynamic weight of each index at different time stages by setting a time fluctuation coefficient; based on the dynamic weight, weighted sum is performed on each subsystem to obtain the comprehensive evaluation value of each subsystem; and constructing a coupling coordination model containing a nonlinear adjustment parameter to calculate the coupling coordination degree of the 3E system.

Methods and systems are described that are configured for managing an environmental system of a vehicle in order to defrost and / or defog a glass panel of the vehicle. A computing device may control one or more devices of the environmental system based on receiving image data associated with the glass panel and environmental data associated with an interior of the vehicle. The computing device may receive the image data from one or more image capture devices and the environmental data from one or more sensor devices. The computing device may determine an indication of one or more environmental conditions associated with the glass panel based on applying one or more neural networks to the image data. The computing device may control the one or more devices to defog and / or defrost the glass panel based on the indication of the one or more environmental conditions and the environmental data.

The invention provides an infrared resonance baking device adaptive to plant life bodies. The baking device comprises a baking chamber, a heating unit, a sensing unit and a control unit, the baking chamber is used for accommodating baked plant life body materials; the heating unit generates adaptive infrared rays with the wavelength range of 1-20 microns after being electrified; the sensing unit is used for monitoring temperature, humidity and wind speed environmental parameters in real time; and the control unit is configured to call preset baking programs matched with different plant materials according to the real-time environment parameters, and dynamically regulate and control the heating unit and the environment system so as to accurately execute a baking process adaptive to the biological characteristics of the materials. The baking device can generate selective resonance with natural vibration frequency of moisture, protein, polysaccharide and other biomolecules in plant life body materials to drive moisture to synergistically migrate from inside to outside so as to carry out mild and uniform bulk phase dehydration, and internal effective components containing aroma components and saccharides are locked, so that the dry matter output rate is increased.

The utility model discloses a high-low temperature corrosion environment system, which comprises a corrosion box, a high-low temperature sensor, a high-low temperature sensor, a high-low temperature sensor, a high-low temperature sensor, a high-low temperature sensor, a high-low temperature sensor and a high-low temperature sensor, the environment temperature control system is connected with the corrosion box through a connecting pipeline, so that the corrosion liquid circularly flows between the corrosion box and the environment temperature control system, and finally the corrosion liquid in the corrosion box is controlled to be stabilized at a designed given value; a refrigerating system and a heating system are arranged in the environment temperature control system, and temperature adjustment is achieved through closed-loop control of a temperature control instrument. The device has the characteristics of convenience in corrosive liquid filling, reliability in corrosive liquid temperature control, small occupied area, low maintenance cost and the like. The device has the characteristics of high integration level, intelligent operation and low-cost maintenance, the experiment efficiency can be remarkably improved, the comprehensive cost of a user is reduced, an advanced tool is provided for reliability evaluation of a metal material in an extreme environment, and the technical blank of current stress corrosion test equipment in the aspect of extreme temperature simulation is filled.

A controlled environment system for standardizing initial conditions in CO2 sorbent characterization is disclosed. The system includes an enclosure that is sealable and a humidity control subsystem having a vessel inside the enclosure, with the vessel containing a saturated salt solution. The system also includes a gas control subsystem having a CO2 sensor within the enclosure and an electric valve through which the interior of the enclosure is in fluidic communication with a gas supply. The system includes a microcontroller communicatively coupled to the CO2 sensor and the electric valve, and configured to function in a gas control-feedback loop, driving the electric valve in response to the CO2 sensor. The saturated salt solution is chosen and the gas control-feedback loop of the gas control subsystem is configured such that a characterization loading condition is established and maintained within the interior of the enclosure while the enclosure is sealed.