3449results about "Weighing by removing component" patented technology

The invention discloses an intelligent measurement and calculation method and system for forest carbon reserves, and relates to the technical field of carbon reserve measurement and calculation, and the system obtains a forest electronic distribution diagram through a GIS technology and surveying and mapping data, collects various carbon reserve related data, and then carries out the correction and denoising of the collected data through a FLAASH algorithm and other preprocessing technologies; the AI sampling optimization model extracts forest features based on a convolutional neural network CNN, and dynamically adjusts a sampling area; secondary acquisition is carried out, data preprocessing is carried out, the total carbon reserve of the forest is estimated by calculating the carbon reserve of each grid, and the forest succession stage, the carbon sink change and the ecological carbon cycle are further analyzed; and finally, in combination with the dynamic influence coefficient of the carbon reserves and a preset threshold value Q, judging the change trend of the carbon reserves, triggering early warning and giving a coping strategy.

The invention relates to the technical field of soil pollution component analysis, and discloses an agricultural soil pollution prediction method. The method comprises the following steps: carrying out soil physicochemical property detection through layered gridding sampling, determining the heavy metal content, the organic matter content and the enzyme activity, and obtaining a pollution characteristic data set; monitoring diffusion characteristics of pollutants by adopting an electrochemical sensing detection array, and generating a migration rule model; a multi-parameter monitoring system is used for detecting the pH value, the oxidation-reduction potential and the ion activity, and a dynamic change sequence is formed; establishing a colloid interface action response matrix, and constructing a pollutant accumulation model; determining the occurrence form and the ion concentration of the pollutants, and generating an interaction map; and finally, constructing an early warning system, and outputting a prevention and control scheme. According to the invention, through cooperative application of multiple analysis and test means, and in combination with interface action mechanism research of pollutants in soil, whole-process intelligent monitoring of soil pollution prediction is realized.

The invention provides a comprehensive evaluation method and system for the remediation effect of heavy metal contaminated soil, and relates to the technical field of environmental engineering.The method specifically comprises the steps that remote sensing data of a contaminated area is obtained, a soil sample is collected, the microbial respiration rate and the soil physicochemical property of the soil sample are measured, the remote sensing data are processed, and a normalized vegetation index is obtained; generating a soil health assessment index based on the collected physical and chemical properties of the soil; integrating the soil evaluation index, the microbial respiration rate and the normalized vegetation index to construct a soil remediation evaluation index; and comparing the remediation evaluation index with a preset evaluation threshold value, and evaluating the remediation effect of the heavy metal contaminated soil. According to the method, the soil health evaluation index and the remediation evaluation index are constructed, so that the evaluation accuracy of the remediation effect of the heavy metal contaminated soil is effectively improved. Through multivariate correlation analysis, biological, chemical and physical characteristics of the soil can be comprehensively reflected, and a scientific basis is provided for subsequent management and remediation measures.

The invention relates to a characterization method for the influence of the corrosion degree on the interface bonding performance of steel fibers and concrete, and solves the technical problems that a large amount of time and cost need to be consumed by depending on a traditional experimental test method, and the complex influence of corrosion on the interface bonding performance is difficult to comprehensively and accurately reflect. The method comprises the steps that steel fibers which are taken out and subjected to single-pull test operation are subjected to preset acid pickling operation one by one, and the mass loss rates of the steel fibers with different corrosion degrees are obtained through calculation one by one according to mass changes of the steel fibers before and after the acid pickling operation; and fitting the interface bonding strength data corresponding to different corrosion degrees by adopting a preset statistical analysis method to obtain a mathematical expression between the interface bonding strength and the corrosion degrees. The method has the following effects that the influence of corrosion on the bonding performance of the steel fiber and concrete interface is comprehensively evaluated in multiple aspects, and the safety and durability of the steel fiber concrete structure in practical application are improved.

The invention belongs to the related technical field of microbiological treatment of soil, and discloses a method for improving microbiological sand consolidation strength based on modified plant fibers. Natural plant fibers are subjected to alkali treatment modification, so that non-cellulose components on the surfaces of the natural plant fibers are removed, the roughness and the specific surface area are remarkably improved, the interface friction force and the mechanical connection capacity between the fibers and sand particles are enhanced, more nucleation sites are provided for microorganisms to induce calcium carbonate precipitation, and the content of calcium carbonate is increased. The strength of the solidified sandy soil can be effectively improved, and the biomineralization period is greatly shortened. Meanwhile, after the modified fibers are doped into the sandy soil, a three-dimensional interlaced fiber network structure can be formed in the material in combination with a microorganism induced calcium carbonate deposition (MICP) technology, and the cohesiveness among sand grains and the mechanical property of the overall structure are effectively improved. According to the solidification method, the solidification strength of the sand column is remarkably improved, the technology is simple, green and environment-friendly, and good engineering adaptability and popularization value are achieved in the field of sand solidification.

The invention discloses a method and a system for efficiently and rapidly detecting protein content and moisture content in a plant-based product based on near infrared spectrum and deep learning, and the method comprises the following steps: obtaining spectral data of a plant-based sample, and carrying out experimental determination on the protein content and the moisture content; in combination with multi-step data preprocessing and adaptive dimensionality reduction, feature signals highly related to target detection are extracted, and a deep learning model based on a convolutional neural network and a self-attention mechanism is utilized to construct a high-precision detection model; a final stable detection model is obtained through multiple times of verification and optimization of the model, and hardware integration is carried out on the final stable detection model and a portable spectrometer to form a detection system. The detection system comprises a 3D printing shell, a spectrum sensor, a conversion line and a data processing unit, the protein content and the water content of a sample can be rapidly and nondestructively detected through one-key operation, and the whole process does not need chemical reagent intervention. The method has the advantages of being high in detection speed, high in portability, easy and convenient to operate, wide in application scene and the like, and is particularly suitable for application occasions needing efficient and on-site real-time detection.

The invention relates to the technical field of wetland ecosystem soil carbon sequestration capability, in particular to a seasonal waterlogged wetland soil carbon estimation and dynamic monitoring method, which comprises the following steps of: selecting a sampling zone and a quadrat according to an equal-elevation water level gradient and a vegetation type; an optimal remote sensing estimation carbon model is determined through remote sensing image interpretation and screening of characteristic factors such as image waveband reflectivity, vegetation indexes, principal component characteristics and single-waveband textures, and soil organic carbon spatial distribution characteristics are analyzed through remote sensing inversion and GIS interpolation; constructing a Wetland-DNDC wetland carbon dynamic simulation model based on a DNDC model to predict wetland long-term carbon dynamic change and greenhouse gas emission; the invention provides a method for simulating carbon reserves and carbon dynamic monitoring based on field investigation and coupling a 3S technology with a Wetland-DNDC model. Compared with a traditional field observation method, the method has obvious technical and cost advantages, and can realize the technical advantages of spatial analysis and long-time sequence monitoring. The research method is suitable for a wetland ecosystem with seasonal hydrological characteristic changes.

The invention provides a method for determining a carbon dioxide-water two-phase seepage relative permeability curve and a method for determining reservoir porosity and permeability evolution under the action of carbon dioxide. The method for determining the relative permeability curve of the carbon dioxide-water two-phase seepage comprises the following steps: acquiring the dry weight of a rock core and the mass of the rock core saturated with formation water; under the simulated formation temperature and pressure condition, constant-speed injection of different kinds of fluid composed of saturated carbon dioxide formation water and gas-phase carbon dioxide with different flow ratios is sequentially carried out into a saturated water core; the pressure difference between the two ends of the rock core, the gas-phase carbon dioxide flow and the saturated carbon dioxide formation water flow after the injection pressure is stable in the injection process of various fluids are obtained; then the rock core is blow-dried with CO2, and the mass of the rock core blow-dried with CO2 is obtained; based on the obtained data, the water-phase relative permeability, the gas-phase relative permeability and the water saturation of the rock core are determined respectively when various kinds of fluid are injected, and then the carbon dioxide-water two-phase seepage relative permeability curve of the rock core is determined.

The invention relates to the technical field of boiler pulverized coal on-line detection, and discloses an automatic pulverized coal on-line detection device which comprises a pulverized coal sampling pipe suitable for being communicated with a pulverized coal pipe at an outlet of a coal mill; the screening devices are sequentially arranged in series, the first screening device is communicated with the output end of the pulverized coal sampling pipe, and the last screening device is communicated with an air extracting pump; the number of the weighing balances is multiple, the weighing balances and the screeners are arranged in a one-to-one correspondence mode, and the weighing balances and the screeners which are correspondingly arranged communicate with each other. Through automatic weighing and data recording, personal errors can be reduced, and the automation level of detection and the data reliability are improved. Through the arrangement that the pulverized coal sampling pipe is matched with the multi-stage screening device and the multi-stage weighing balance, the fineness of pulverized coal in the pulverized coal pipe at the outlet of the coal mill can be analyzed in real time, so that an operator is guided to timely and quickly adjust the coal mill in real time by utilizing the fineness analysis, and a boiler is enabled to operate in an optimal state; meanwhile, the cost of pulverized coal is controlled.

The invention provides a method and a system for estimating organic carbon reserve change of soil in a vegetable field in a short time, and belongs to the technical field of soil measurement. The method comprises the following steps: acquiring net ecosystem carbon income and expenditure (NECB); and estimating the organic carbon reserve of the vegetable field soil by using net ecosystem carbon income and expenditure (NECB). According to the method, the organic carbon reserve of the soil in the vegetable field can be quickly estimated, the influence of different farming measures on the organic carbon reserve of the soil in the vegetable field in a short period can be known, and farmers and agricultural managers can optimize management measures such as fertilization, irrigation and planting modes; carbon emission and fixed conditions of a farmland ecosystem can be determined, so that the speed and the degree of climate change can be better predicted, and reasonable vegetable planting management measures can be taken in time.

The invention discloses a method and a system for reflecting a growth state by a spectral curve of a plant leaf under salt mist stress and a storage medium, and relates to the field of plant growth monitoring. Processing the collected leaf image, extracting a leaf main body area, removing an interference part, and matching the filtered original spectral data to obtain target spectral data of the leaf main body area; the method comprises the following steps: combining target spectral data of a leaf main body area with leaf moisture content data, constructing a spectral analysis model by adopting a partial least square method, taking the leaf moisture content as a covariable into the spectral analysis model, peeling off the interference of leaf moisture change on the spectral data, and calculating the leaf moisture content. And finally obtaining a target spectrum curve of the plant leaf under the salt mist stress. A characteristic wave band corresponding to the target spectrum curve is extracted, a plant growth index is constructed according to the characteristic wave band, and the plant growth index is used for reflecting the growth health state of the plant. The problems that traditional monitoring is high in subjectivity, insufficient in precision and low in efficiency are solved.

The method for detecting the comprehensive working performance of the fresh concrete provided by the invention comprises the following steps: pouring the fresh concrete into a certain channel in a detection container which is provided with a plurality of channels and the bottoms of which are communicated with one another, and detecting the comprehensive working performance of the fresh concrete when the liquid level height of the fresh concrete in each channel is kept unchanged, measuring the liquid level height of the concrete in each channel and detecting the quality of the concrete in the container; a discharging opening in the bottom of the detection container is opened, the concrete in the detection container is discharged by means of self weight, in the discharging process, the mass of the discharged concrete or the discharging flow speed of the concrete is measured, and after discharging is completed, a concrete discharging mass-time curve or a concrete discharging flow speed-time curve is obtained; according to a measurement result, a series of indexes including the fluidity, viscosity, uniformity and apparent density of the concrete are obtained through arrangement and conversion and serve as a comprehensive evaluation result of the working performance of the fresh concrete. According to the method, multiple working performance indexes of the concrete can be given at a time, and mutual complementary interpretation can be carried out.

The invention discloses a method for rapidly detecting the content of a residual flocculating agent in washing machine-made sand, which comprises the following steps of: screening out particles with the particle size of more than 4.75 mm from machine-made sand to be detected, respectively testing the critical water contents of degraded and untreated machine-made sand samples, and determining the mass concentration range of the flocculating agent on the basis of the difference value of the critical water contents of the two kinds of machine-made sand. Compared with tests through neat paste, mortar and concrete systems, deviation possibly caused by introduction of other materials is avoided, and the method is more convenient, faster and more accurate. A'critical water absorption 'test method is provided according to the stability of the stacking state of sand, a transparent circular truncated cone test mold with scales is designed, the filling height and the tamping method of each layer of sample are accurately stipulated, and the test normalization and the test result repeatability of different time, different places and different operators are improved.

The invention provides a silicone rubber aging test method and device, electronic equipment and a storage medium, and relates to the technical field of silicone rubber. The silicone rubber aging test method comprises the following steps: according to a preset actual application environment of target silicone rubber, determining cycle test parameters of preset aging factors corresponding to the actual application environment; determining an acceleration factor of the aging test according to the cycle test parameters and a preset calculation mode; performing thermogravimetric analysis on the target silicone rubber according to the cycle test parameters to determine mass loss parameters of the target silicone rubber; and determining an aging test result according to the elongation at break, the acceleration factor and the mass loss parameter of the target silicone rubber. According to the method, the aging performance of the target silicone rubber is integrally and comprehensively evaluated by combining multiple indexes such as the elongation at break, the acceleration factor and the quality loss parameter, and the test efficiency is improved.

The invention discloses a high-pressure sleeve sheath aging evaluation method and system based on feature unevenness, and belongs to the technical field of high-pressure sleeve operation and maintaining.The method comprises the steps that a to-be-tested high-pressure sleeve sheath is sampled, the interior of a sheath body is selected as a reference area, and meanwhile multiple aging feature areas on the surface of the sheath are selected as aging areas; repairing the sampled insulated damaged area, injecting a nano silicon dioxide modified silicone rubber filler, and performing ultraviolet curing; performing group degradation characteristic test and thermal stability characteristic test on the sampled sample to obtain aging characteristic parameters including characteristic peak absorptivity of each group and thermogravimetric residual rate parameters of different temperature points; taking the aging characteristic parameter of the reference area as a reference value, respectively calculating a single parameter deviation degree of each aging area, and calculating a comprehensive aging non-uniformity value; and according to a comparison result of the comprehensive aging non-uniformity value and a preset grading threshold value, outputting an aging grade of the high-voltage sleeve sheath and a corresponding operation and maintenance strategy.

The invention discloses a method for characterizing the pore size of the full pore diameter of shale based on combined measurement of a gravimetric method and NMR. The method comprises the following steps: drawing a curve that the pore distribution frequency of a rock sample changes along with the pore diameter; calculating the saturated water porosity of the rock sample based on the weight of the dried rock sample and the weight of the saturated rock sample; based on the saturated water porosity of the rock sample, converting the nuclear magnetic semaphore of the nuclear magnetic resonance T2 spectrum after saturation treatment of the rock sample into a porosity component; based on the porosity component, drawing a change curve of the porosity component and the porosity accumulated value along with the relaxation time T2 after saturation treatment of the rock sample; calculating a space-time conversion coefficient between the nuclear magnetic resonance relaxation time T2 value and the pore size; and based on the space-time conversion coefficient, drawing a full-aperture pore size result graph after saturation treatment of the rock sample on the basis of the change curve of the porosity component and the porosity accumulated value along with the relaxation time T2 after saturation treatment of the rock sample. The phenomenon that the measurement ranges of the pore sizes are overlapped does not exist through multiple simultaneous measurement means, and the obtained full-aperture pore size result is higher in precision.

The invention discloses a full-automatic crushing and detecting all-in-one machine for grain particle materials, which relates to the technical field of detection and comprises a constant volume module, a rice huller module, a microwave heating and moisture measuring module and the like. The constant volume module is used for transferring raw grains sampled at the upper stage, carrying out constant volume treatment through a container with a fixed volume and discarding redundant raw grains, and the rice huller module is used for carrying out hulling treatment on the raw grains, carrying the hulled raw grains and then transferring the unhulled raw grains to the microwave heating and moisture measuring module through the manipulator module; all modules from raw grain feeding to result detection are integrated; and the mechanical arm is used for transition, so that full-automatic operation from raw grain receiving to result output is successfully realized. Materials at different positions in the crushing box can be crushed through the crushing module, so that the contact area is larger during extraction of mycotoxins and heavy metals in the grains, and corresponding food safety index detection is more accurate during detection.

The invention provides an on-line monitoring system for comprehensive working performance of concrete. The on-line monitoring system comprises a concrete drainage device located on a concrete conveying line of a mixing station and a construction bin surface; the detection container is used for collecting concrete and detecting the working performance, and a plurality of detection channels of which the bottoms are communicated with one another are arranged in the detection container; the gate group is used for controlling connection and disconnection of concrete among the passages; the sensing unit is used for measuring the quality of the concrete in the detection container and the liquid level height of the concrete in each detection channel; the data processing and equipment control terminal is used for controlling the gate group, calculating a series of indexes of the concrete according to the data measured by the sensing unit, taking the indexes as detection results, performing abnormal alarm on the detection results, storing and sending the measured data and the detection results; and the cloud platform communicates with the data processing and equipment control terminal. According to the invention, on-line in-situ monitoring, rapid evaluation and alarm feedback of various working performances of concrete can be realized under the condition that on-site pouring construction is not influenced.

The invention relates to the technical field of photovoltaics, in particular to a method for testing the grafting rate of silane grafted polyolefin for a photovoltaic packaging adhesive film. Comprising the following steps: S1, extracting a silane grafted polyolefin grafting material in an organic solvent to remove unreacted silane or residual peroxide, washing for multiple times after extraction is completed, and drying for later use; and S2, weighing and recording the mass of the crucible and the extracted silane grafted polyolefin colloidal particles, then putting the crucible filled with the colloidal particles into TGA for calcination, weighing the total mass of the crucible and the sample after calcination is finished, and converting the relative grafting rate by using the ash content of the TGA. According to the invention, the grafting rate of silane grafted polyolefin can be timely and effectively tested and evaluated, so that the grafting stability in the grafting material production process can be truly reflected. Meanwhile, the grafting rate testing method is high in efficiency, simple and reliable to operate.

Provided is a method for determining huff and puff fluid volumes in multi-scale spaces of shale oil reservoirs, including the following steps: rock sample pretreatment; porosity stress sensitivity testing; high pressure hg injection testing and nuclear magnetic resonance testing benchmarking; online nuclear magnetic resonance testing; data processing and analysis. Firstly, a changing law of multi-scale spaces of shale oil reservoirs with an effective stress is characterized through a pore stress sensitivity measurement and online nuclear magnetic resonance measurement combined experiment, and then the huff and puff fluid volumes of multi-scale spaces of shale oil reservoirs under a condition of a certain stimulated reservoir volume are calculated. A usage amount of a fracturing fluid for a fracturing horizontal well in the shale oil reservoir is determined from the perspective of giving full play to the imbibition replacement role of micro-nano pores.

The invention discloses a method for rapidly determining the swelling property of pulp for lyocell fibers and a centrifugal device, and relates to the field of pulping and papermaking and the field of spinning. The swelling property of the pulp for the lyocell fiber is represented by measuring the ratio of the mass of an NMMO solution retained in the pulp to the absolute dry mass of the NMMO solution after a low-concentration NMMO / dissolving pulp mixed solution is subjected to centrifugal treatment under a certain swelling condition under a certain centrifugal condition. The detection method provided by the invention is rapid, efficient and stable, the NMMO swelling properties of the dissolving pulp for different lyocell fibers can be compared by using a simple centrifugal device, the difficulty degree of the dissolving pulp for absorbing the NMMO solution to the maximum extent is reflected macroscopically, and the swelling property of the pulp in a lyocell fiber production dry process is effectively evaluated.

The invention relates to the technical field of coating stirring tank detection, in particular to a detection device for the inner wall of a special coating stirring tank, which comprises a device seat, a positioning mechanism, a wall scraping assembly and a test piece, the device seat is connected with a rotating seat, the rotating seat is rotatably connected with a threaded rod, and the threaded rod is in threaded connection with a lifting sheet; a limiting rod is arranged on the outer side of the threaded rod, a second tooth piece is arranged on the bottom side of the rotating base, a first tooth piece is connected to one side of the second tooth piece, and a first arc-shaped clamp is installed on one side of the device base. According to the scheme, the possibility that residual impurities are attached to the inner wall of the tank body for a long time is reduced, and the possibility that paint corrodes the tank body for a long time is reduced; the secondary cleaning effect of the device on the inner wall of the cleaned tank body is improved, cleaned impurities can be collected, so that the cleaning effect of the cleaning equipment can be detected, multifunctional detection on the interior of the tank body is also improved, and whether corrosion is generated in the inner wall or not can be distinguished.

The invention discloses a method for measuring lateral expansive force of expansive soil. The method comprises the following steps: manufacturing a plurality of groups of expansive soil test pieces with the same dry density and initial water content; the atmospheric influence depth is determined, and the overburden pressure of the soil body is determined according to the point positions where the lateral expansive force needs to be calculated in the atmospheric influence depth after the retaining structure is supported; a plurality of overburden pressure lateral confinement loaded expansion rate tests are conducted according to a standard method, and a relational expression among the water content increment, the overburden pressure and the loaded expansion rate is established; by improving a K0 consolidation test, the loaded expansion rate and the lateral expansion force of the soil body in the humidifying process under the action of overburden pressure are measured; substituting the result of the improved K0 consolidation test into the relational expression obtained by the lateral confinement load expansion rate test, and calculating to obtain the water content increment corresponding to the load expansion rate in the soil body humidifying process of the improved K0 consolidation test; and fitting to obtain a relational expression among the lateral expansive force, the overburden pressure and the water content increment. According to the method, the lateral expansion force at different depths behind the rigid retaining structure can be calculated.

A gear quality detection table comprises a workbench, and is further provided with a rotary fixing mechanism, a gear weight detection mechanism, a detection circuit and a tooth conical end face detection mechanism. The rotary fixing mechanism comprises an electric push rod, a connecting rod, a sleeve and a bearing, the gear weight detection mechanism comprises a motor speed reduction device, a fixed pipe, a weight sensor, a conical top sleeve, a movable rod and a lead screw, and the gear conical end face detection mechanism comprises an electric push rod A, a pressure sensor and multiple sets of rotary contact wheels. Each set of rotating contact wheel comprises a fixed seat and a rotating wheel, the rotating wheel is rotatably mounted in the fixed seat, and the two detection circuits are mounted in the element box and are electrically connected. The device can detect the thickness of the gear, the wear degree of the gear and whether the gear is broken or not, can further accurately detect whether the gear conical end face of the gear is broken or over-worn or not through the gear conical end face detection mechanism and the second detection circuit, and can generate an alarm signal in time to prompt detection personnel when abnormity occurs.

The utility model relates to the technical field of dairy product detection, and provides a dairy product total solid detection workstation which comprises a vessel cache unit, a sample pretreatment unit, a transfer unit, a drying unit, a weighing unit and a data processing unit, the vessel cache unit caches a vessel filled with a heating medium; the sample pretreatment unit is used for pretreating a centrifuge tube filled with dairy products; the transferring unit is used for sampling dairy products, transferring the sampled dairy products into the vessel, and controlling the vessel to move between the drying unit and the weighing unit; the drying unit is used for drying the vessel; the weighing unit is used for weighing the weight of the vessel before and after the dairy products are added and weighing the weight of the vessel after the dairy products are dried; and the data processing unit obtains the total solid content in the dairy product according to the weighing data fed back by the weighing unit. The device is low in detection cost and high in detection efficiency, ensures the accuracy of the detection result of the total solid content, and can meet the large-batch detection requirements.

The invention discloses a multi-surface radiation accelerated pyrolysis combustion experiment device and a test method, and belongs to the technical field of combustible combustion, the device comprises a heating unit, a control unit and a measuring unit; the heating unit comprises a plurality of heating cones and a sample piece box; a sample piece is embedded into the sample piece box, and only a plurality of surfaces are exposed as test heating surfaces; the plurality of heating cones are in one-to-one correspondence with a plurality of test heating surfaces of the sample piece and heat the test heating surfaces; the control unit is used for controlling the heating cone to heat; the measuring unit is used for measuring the surface temperature of the sample piece, the quality of the sample piece and the heat flow of the heating cone and monitoring the state of the sample piece. The device is simple and easy to operate, has high reliability, can realize ignition experiments of two-side heating of edges at different angles and three-side heating of vertexes at different angles, and has high repeatability and accuracy of test results.

The invention provides a fresh food freshness monitoring method, system and device and a storage medium, and relates to the technical field of fresh food monitoring, and the method comprises the steps: obtaining a surface image of a target fresh food sent by a target sensor in a current environment, and a weight difference value between the current weight and the initial weight of the target fresh food; determining a first freshness score of the target fresh food according to a first environment feature of the current environment and the surface image; determining a second freshness score of the target fresh food according to the weight difference value and a second environment feature of the current environment; determining an initial fresh degree grade of the target fresh food in combination with the first fresh degree score and the second fresh degree score; and obtaining a target gas concentration of the target fresh food in a preset range, adjusting the initial fresh degree grade according to the target gas concentration, and generating a target fresh degree grade of the target fresh food. The method has the technical effect that the accuracy of fresh freshness evaluation is improved.

The invention belongs to the field of coal quality analysis, and discloses a microwave heating type coal quality on-line analysis device and application thereof.The device comprises an on-line sample collecting and preparing module, a microwave heating module, a weight collecting module and an analysis control module, and the microwave heating module comprises a microwave drying cavity, a microwave devolatilization cavity and a microwave ashing cavity; each chamber is connected with a microwave temperature control unit for independent temperature control; the online sampling and sample preparation module is used for collecting coal from a coal conveying line in real time, crushing the coal into standard coal samples, and feeding the standard coal samples into the corresponding treatment chambers for microwave heating treatment; the microwave ashing cavity is further connected with an oxygen supply unit, and the oxygen supply unit is used for providing an oxygen-enriched environment for the microwave ashing cavity; the weight acquisition module is connected with the analysis control module and is used for acquiring the weight of the standardized coal sample before and after heating; and the analysis control module is used for controlling the microwave temperature control unit to adjust the temperature of the corresponding chamber and obtain various indexes of the standardized coal sample. According to the invention, the efficient and full-automatic microwave heating coal quality online sampling analysis effect can be realized.

The invention discloses an intelligent soil classification automation system and method. Comprising a soil sample pretreatment module used for air drying, stirring and weighing treatment; the soil sample particle size grading screening module is used for carrying out step-by-step screening treatment to obtain a first-stage particle distribution result; the liquid-plastic limit automatic measurement module is used for performing measurement by using a conometer method to obtain a measurement result of the conometer method; the burning measurement module is used for carrying out burning treatment to obtain a corresponding burning measurement result; the densimeter measurement module is used for carrying out particle analysis through a densimeter method to obtain a second-stage particle distribution result; and the control analysis module is used for realizing automatic control of the intelligent soil classification automation system and performing data analysis to obtain the soil sample type and the corresponding optimal solidification method. According to the system disclosed by the invention, the whole-process automation and data processing of soil classification testing are realized, and the soil sample type and the corresponding optimal solidification method can be automatically obtained.

The invention relates to the technical field of meat drip loss measurement, in particular to a method and equipment for automatically measuring meat drip loss. Comprising a bottom plate, the top end of the bottom plate is fixedly connected with a constant-temperature box, the top of the constant-temperature box is provided with a cover plate through an up-down adjusting assembly, one end of the bottom of the cover plate is fixedly connected with a hollow shaft, the outer side of the hollow shaft is provided with a multi-layer draining frame, and the bottom of the draining frame is provided with a plurality of hanging rods in parallel at intervals; a weighing sensor is arranged between the top of the hanging rod and the draining frame. According to the method and device for automatically measuring the water drop loss of the meat quality, the cover plate is moved upwards, the cover plate can drive the hollow shaft, the draining frame and the drained water collecting device to move upwards to the position above the constant-temperature box in the upward moving process, then positioning screws are unscrewed, the draining frame and the draining frame rotate around the hollow shaft, and the water drop loss of the meat quality is measured. The draining rack, the hanging rod and the hooks are moved to the outer side, meat hanging operation can be flexibly carried out, the safety is good, and the meat hanging efficiency is higher.