313 results about "Soil parameters" patented technology

A soil parameter measurement arrangement includes a capacitive based soil moisture and salinity sensor, a predetermined moisture migration medium located in a volume adjacent said sensor so that the medium substantially occupies the field of influence of said sensor. The medium is in moisture communication with the soil to be measured, and said sensor is adapted to measure and produce data representative of the volumetric water content of said medium. A sensor data processing means determines both the soil moisture and salinity of said medium. By using the measured volumetric soil moisture content and the moisture release curve of the medium, it is possible to derive the matric potential of the soil. The measured salinity of the medium corresponds to the salinity of the soil that is in moisture communication with the medium.

The invention relates to a crop growth irrigation decision-making control system comprising a crop database, a soil database, a meteorological database, an irrigation volume database, and an achievement database. Crop parameter data from the crop database, soil parameter data from the soil database, and meteorological data from the meteorological database are initialized by a crop growth mathematical model of the decision-making control system; with combination of irrigation volume data from the irrigation volume database, the crop growth mathematical model carries out state calculation; the decision-making control system makes an irrigation decision based on the irrigation decision-making model; and the irrigation decision-making effect is fed back based on daily data output provided by the achievement database; and the irrigation decision is adjusted based on the evaluation result.

The invention discloses a farmland soil information collecting system, comprising a field induction node, a route node, a field WSN-GPRS gateway and a data management server; wherein, the field induction node senses the soil information by a soil parameter sensor and transmits the soil information to a WSN-GPRS gateway by other field sensor nodes and/or route nodes, the route node is used for transmitting the soil information which is sent by the field sensor nodes, the field WSN-GPRS gateway is used for filtrating, compressing and tidying the soil information data and sending the data to a data management server, and the data management server is used for receiving, memorizing and analyzing the data sent by the field WSN-GPRS gateway and communicates with a WEB visiting terminal and/or a mobile access terminal. The invention also discloses a field soil information collecting method. Compared with the prior art, the method and the system have the advantages of strong real-time characteristic, simple arrangement, high measurement precision, large gained data quantity and the like.

The invention discloses a method for evaluating soil corrosivity of a grounding grid of a substation in Guangdong region, and relates to a method for evaluating the soil corrosivity. The method comprises the following steps: (1) picking up the soil on the buried depth position of the grounding grid to measure eight soil parameters(1) by conventional methods; (2) utilizing an eight index comprehensive grading method to determine a comprehensive grade(2); and (3) determining the grade of the soil corrosivity according to an eight index comprehensive grading result(3). The eight soil parameters include soil texture(1.1), soil pH value(1.2), soil electric resistivity(1.3), soil salt content(1.4), soil water content(1.5), corrosion potential(1.6), and soil C1+2SO4 content (1.7). The method is not only used for evaluating the soil corrosivity environment caused by the grounding grid steel of the substation operated in Guangdong region and predicting the soil corrosivity environment caused by the grounding grid steel of a newly built substation, but also applied to evaluating the corrosive protection of the buried steel in other industries in Guangdong region.

The invention relates to a flow or semi-flow sand dune recover method, which comprises that: 1, based on condition and soil parameter, selecting working area; 2, via the grass mode, selecting plant kind; 3, planting seeds into working area, the first year grass and arbuscle are mixed sprayed into face of sand dune, arbor is sprayed at the bottom; 4, spraying lignin water solution at the face of working area, said lignin is crosslinker of lignin, urea-aldehyde and lignin, with solidifier. The lignin is modified into hydroxymethyl/hydroxyethylation lignin. The invention has low cost and better effect.

Present invention relates to compound transducer for synchronizing real time measuring soil parameters and measurement equipment. Transducer includes steeple head for measuring soil cone index, transducer compound on steeple head for soil moisture percentage on dried soil basis and soil specific conductivity. Measurement equipment includes main upright post, base, guideway, transducer erecting bed, road wheel, data collector platform, controller and accumulator box, wherein said controller having signal input interface and signal output interface, stepping motor, position transducer, and pressure transducer. Said invented equipment realizes soil three parameters synchronizing real-time measurement through synchronizing real time measuring conic high frequency impedance, high frequency loss and taper stress exponent, determining soil moisture percentage on dried soil basis, soil specific conductivity and degree of compaction according to correlative multivariable mathematical model.

The invention relates to a soil heavy metal migration and transformation simulating device. The device comprises a leaching column, a liquid storage system, multiple collection and detection units and a data acquisition and control system, variation of soil water potential in the leaching column is controlled through the liquid storage system, and thereby migration and transformation of heavy metal in soil are achieved. Leaching solutions in the leaching column are collected and detected through the collection and detection units, and leaching solution parameters and soil parameters can be acquired, stored and controlled through the data acquisition and control system. The simulating device integrates the functions of leaching solution storage, collection and detection and data acquisition, the structure is compact, the operation is convenient, a parameter optimization means is provided for establishing a migration and transformation model of heavy metal ions in soil, the test cycle is shortened, test precision is improved, a research result is more scientific and reliable, and the simulating device is a tool for conducting experimental research such as soil heavy metal ion migration.

Apparatus for selecting and growing plants includes a housing, sensors and probes at least partially disposed within the housing for measuring at least one of climate and soil parameters. A rechargeable power source and a controller for at least receiving the climate and/or soil parameter measurement are provided. There is a device for communicating the at least one of such climate and soil parameter measurement to a remote device. A display may be provided within the housing for locally displaying such at least one of such climate and soil parameter measurement. A database member containing plant selections and a processing member may be further provided for locally displaying a suitable plant selection in response to the measured at least one of climate and soil parameter.

The invention discloses a network monitoring system for ecological environment in an orchard by wireless sensors. The network monitoring system consists of eight ecological environment information sensor nodes, three mobile nodes and a converged node. In the orchard, eight ecological environment information sensor nodes are fixed on fruit trees in certain distance respectively; an air temperature sensor, an air humidity sensor and an illumination sensor are fixed on the same fruit tree; and a soil temperature sensor and a soil moisture sensor are buried in the soil. The system integrates environmental parameter sensing measurement with wireless transmission, network communication and other technologies and effectively solves the problems of automatic collection and transmission of ecological environment information in the orchard. Atmosphere and soil information sensor nodes are evenly distributed in a region to be monitored of the orchard,, monitor atmosphere and soil parameters of the position where each node is positioned respectively and are connected to form an information transmission network through respective wireless communication module; and a blind spot of a wireless routine signal is added with a mobile node for maintaining the communication and reliability of a communication route and finally transmitting data to the converged node.

The invention discloses a prediction method of considering the slope stability under the pore water effect. The prediction method comprises the following steps of step 1, selecting a slope to be predicted, determining the section geometrical size of the slope, and expressing the surface geometrical shape and the sliding face shape of the slope with an equation; step 2, determining slope soil parameters; step 3, applying a variational method to establish a slope stability analysis equation set under the effect of a pore water pressure, solving the equation set to obtain a slope sliding face stress distribution condition, and determining a safety coefficient and a most dangerous sliding face; and step 4, judging the slope stability according to a stability coefficient critical value. The invention gives a slope stability calculation method of considering the pore water effect, can perform calculation to acquire a minimal safety coefficient of the slope and the corresponding most dangerous sliding face, can give a soil cracking position and depth range caused by the effect of the pore water pressure, is high in calculation efficiency and accuracy, is more close to engineering practiceand provides important guidance to practical slope engineering landslide early warning and reinforcing design.

The invention discloses a universal intelligent irrigation system and a control method therefor. The universal intelligent irrigation system comprises a plurality of meteorological information sensors and a plurality of soil information sensors, wherein the meteorological information sensors and the soil information sensors are separately connected with a data aggregation module, the two data aggregation modules are separately connected with a model calculation and control module, the model calculation and control module is connected with an executor, and the executor is connected with irrigation facilities; and the model calculation and control module comprises a PLS calculation model and an ANFIS calculation model. According to the system, irrigation control is carried out according to calculated results on the basis of sensor detected environment and soil parameters through utilizing a machine learning algorithm, extracting parameters, which have the greatest influence on required irrigation water consumption, from all parameters and modeling corresponding crop transpiration calculation models. According to the control method for the universal intelligent irrigation system, disclosed by the invention, a closed-loop control mode is adopted, so that the frequency of irrigation and the irrigation water consumption can be automatically and flexibly adjusted according to different meteorological conditions and crop growth conditions.

The invention relates to a safe construction method applied to strong structure soft soil by a preloading method in the technical field of constructional engineering. The method includes the steps: firstly, first stage geological survey including the operations of classifying soil horizons, finding out the position of a permeable layer, the type of groundwater and the state of water source supplement, setting soil parameters by geotechnical tests and making a summary listing of result of geotechnical tests; secondly, the construction of plastic water discharge plates and sand cushion layers of the first stage; thirdly, middle stage geological survey determining the disturbing degree of the construction of the plastic water discharge plates of the first stage on lower soil; fourthly, confirmation of construction parameters settling the schedule of later stage embankment preloading according to the relationship of the increase of soil strength and the degree of consolidation; and fifthly, execution of construction of embankment preloading according to the construction schedule determined in the fourth step, and finally road surface pavement is carried out, thereby accomplishing the entire embankment construction. The method of the invention is simple, the security of the construction can be greatly increased, and the time limit for a project can be shortened to the utmost extent.

The invention relates to a method for using alkali soil as bed to plant poplar, which comprises testing the soil parameters, finishing soil, improving soil, transplanting, banking, and irrigating. Wherein, the invention is characterized in that: the pH of alkali lank is higher than 9, the soluble salt content is higher than 0.6%; it uses plant oil tart or oil filming agent to avoid soil deposit layer alkali into improved layer via capillary; the improved layer is functioned via soil alkali reducer to reduce salt and alkali; and it uses neutralized sand to improve the porous structure and penetration, and the anaerobic decomposed of reducer can supply nourishments to poplar. The invention can utilize alkali land and enlarge the plant area.

The invention relates to the technical field of agricultural irrigation equipment and discloses a crop irrigation system and an irrigation method thereof. The crop irrigation system comprises a solar power supply assembly capable of converting solar energy into electric energy, a main control box arranged on the solar power supply assembly, a growth vigor monitoring assembly arranged on the solar power supply assembly and capable of monitoring crop growth vigor in real time, a soil parameter monitoring unit capable of being wirelessly connected with the main control box and a water supply and fertilization assembly, wherein the growth vigor monitoring assembly can perform wire transmission of monitored real-time growth vigor information of crops to the main control box. The main control box is respectively electrically connected with a water supply solenoid valve and a fertilization solenoid valve in the water supply and fertilization assembly and can control the water supply solenoid valve and the fertilization solenoid valve to be switched on or off according to actual water content and conductivity of crops monitored by the soil parameter monitoring unit. The irrigation system can determine water demand and fertilizer demand according to crop growth vigor to perform irrigation and have the advantages of saving water resources and improving fertilizer utilization rate.

The invention discloses a soil landslide monitoring, early warning and evaluating method which comprises the following steps: S1, acquiring landslide topography and geological data to be monitored, and acquiring a rock-soil parameter test value through an indoor test; S2, establishing a landslide geologic model, carrying out limit analysis, determining a landslide damage mode and carrying out landslide monitoring; S3, uniformly designing parameter combinations for the rock-soil parameter test values, performing finite element calculation on all the parameter combinations to obtain a displacement field calculated by each parameter combination, and recording the displacement of each monitoring point to obtain a 'parameter combination-displacement' neural network model; S4, according to the landslide real-time cumulative displacement monitoring data and the parameter combination-displacement neural network model, performing rock-soil parameter inversion correction, obtaining rock-soil real-time strength parameters, and performing precision inspection; and S5, performing limit analysis by adopting real-time strength parameters, establishing a 'real-time cumulative displacement-safety coefficient' relation curve, establishing a landslide monitoring three-level early warning grade evaluation system, and evaluating the monitored landslide.

The invention discloses an aciculignosa canopy reflectivity calculation method. The method comprises the steps of S1, recognizing a parameter, wherein a model parameter is input, and the input parameter is preliminarily divided into three types, namely, a leaf parameter, a soil parameter and a canopy parameter; S2, inputting the leaf parameter in the step 1 into a LIBERTY model to conduct single leaf spectral information simulation to obtain the reflectivity and transmittance of an aciculignosa leaf; S3, according to the soil parameter and the canopy parameter in the step 1 and the reflectivity and transmittance of the spectrum of the single leaf, calculating an extinction coefficient and a scattering coefficient, and further calculating to obtain a parameter of the SALI model; S4, inputting the parameter obtained by calculation in the steps 3 into the SALI model, and calculating the related reflection factor and reflectivity of a canopy; S5, according to the reflection factor and the reflectivity in the step 4, calculating the reflectivity of the canopy. The aciculignosa canopy reflectivity calculation method is applicable to continuous aciculignosa canopy parameter inversion.

The invention relates to a liquefaction judgment method based on standard penetration and static cone penetration test correlation. A principle of selecting a static cone penetration test contrast hole of a standard penetration test hole and a reading method for a standard penetration parameter value N and a static cone penetration parameter tip resistance value qc are provided; three influence factors of clay content rhoc, average particle size D50 and soil parameter alphap are considered, the value N and the value qc are fitted, and a statistically correlative relationship of N-qc is provided; and on the basis, a foundation soil liquefaction judgment method based on a static cone penetration test is provided. By the method, the liquefaction judgment of foundation soil can be made relatively quickly and accurately; and compared with the conventional method, the method is simple, economic and quick, and has a good engineering application value.

The invention discloses a method for measuring parameters of soil in a greenhouse. The method comprises the following steps of establishing a neural network by taking the temperature, humidity and carbon dioxide content of air and air flow as input parameters and taking the temperature, water content and carbon dioxide content of soil as output parameters; solving the optimal input parameter of the neural network; judging whether manual sampling is needed or not according to errors of estimation of the neural network in the previous circulation, wherein if yes, errors between the measured temperature, water content and carbon dioxide content of soil and the temperature, water content and carbon dioxide content which are estimated through the neural network of the soil are obtained through comparison by means of manual sampling and off-line analysis, the training neural network is updated through an additional momentum learning rule according to the measured temperature, water content and carbon dioxide content data of soil and the error data between the estimation of the neural network and the measured temperature, water content and carbon dioxide content of soil. According to the method, the soft measurement technology is adopted, and the soil parameters are measured and controlled accurately in real time.

The invention discloses a novel safe grounding method of a transmission line tower. The method includes that a linoleum insulating layer is laid on the upper layer, and a three-dimensional ring-shaped grounding body is laid on the lower layer, so that hazard caused by step voltage and touch voltage of the transmission line tower is reduced. The three-dimensional ring-shaped grounding body comprises an upper layer cylindrical grounding body (4), a middle layer vertical connection body (5), a bottom circular ring (6) and a peripheral welding level radiation pole (7) with a circular ring structure. According to the method, dispersion resistance is effectively reduced, a GPF-94 resistance reducing agent is filled to the inside of the ring shape to improve soil parameters, reduce ground resistance and enlarge an effective cross section of the grounding body, and a good voltage balancing function is achieved. By means of the level radiation pole, current dispersing is greatly performed. The linoleum insulating layer is laid at a position of a peripheral ground voltage balancing body, which is 0.8m above the ground surface, so that permissible value of the step voltage is increased, and value of current which flows through a human body is decreased. The grounding method for decreasing step voltage of the transmission line tower has the advantages of being good in current dispersing and voltage balancing effects of the bottom layer, wide in application range, convenient to construct, corrosion resistant, safe and reliable.

The invention discloses soil parameter detection equipment and method. The electronic equipment comprises a detection sensor, a processor and a port, wherein the detection sensor is connected with the processor and the port, and the detection sensor is used for detecting soil parameters in soil; the processor is used for performing predefined process on the soil parameters to obtain actual parameters; the port is used for sending the actual parameters obtained by the processor through Bluetooth low-power consumption technology to set electronic equipment. The soil parameters in the soil are rapidly detected through the detection sensor in the soil parameter detection equipment, in addition, after the actual parameters are obtained through the processor, the actual parameters can be transferred to the specified electronic equipment timely through the port, the operation process of soil parameter detection can be simplified, and meanwhile the efficiency of soil parameter detection can also be improved.

The invention discloses a soil parameter detection device and particularly relates to a soil parameter in-situ detection device. The device comprises an outer sleeve and a push rod coaxially installed in the outer sleeve. The outer sleeve comprises an upper long connection pipe and a lower tubular detection rod. The outer side of the lower end of the long connection pipe is provided with an upper connection plate surrounding the long connection pipe, the outer side of the upper end of the detection rod is provided with a lower connection plate surrounding the detection rod, and the upper connection plate and the lower connection plate are fixed together through bolts. By means of the technical scheme, according to the soil parameter in-situ detection device, the push rod is pushed downwards, so that soil parameter sensors located in the circumference of the pipe wall are sequentially pushed out by a certain distance, and accordingly sensor probes make contact with detected soil to finish measurement. By means of the measurement method, damage to soil is small, measurement is easy and convenient, the measurement effect of soil at different depths is better, measurement efficiency is improved, and labor intensity of measurement staff is reduced.

In one embodiment, a computer-aided foundation design technique employs variable soil parameters that are dynamically updated based on changes in footing shape, size, and/or embedment depth. The variable soil parameters may include a variable soil bearing capacity. The variable soil bearing capacity may be represented as a series of bearing capacity interaction curves that indicate an allowable bearing capacity for different footing dimensions and embedment depths. As part of the computer-aided foundation design technique, different combinations of footing dimensions and/or embedment depths may be iterated through, and for each iteration, base pressures may be tested against a soil bearing capacity that is specific to that combination of footing dimension and embedment depth.

The invention discloses a soil equivalent resistance model modeling method in combination of repeated multipoint actual measured data of a power grid and simulation modeling calculation. The method ischaracterized in that an existing soil equivalent resistance model construction method is improved by use of a mixed modeling method in combination of the actual measured data and the simulation modeling calculation; repeated multipoint measurements are performed on an alternating-current power grid by changing a topological structure of the alternating-current power grid, that is, sequentially switching off any return circuit of alternating current circuits between two transformer substations with direct electrical contact in a modeling range to obtain multiple groups of direct current distribution data of a main transformer neutrality point of each transformer substation in the modeling range; and a soil equivalent resistance model is constructed by simulating calculation and inversionmeans. According to the soil equivalent resistance model modeling method, detailed soil parameters are unnecessary to collect, the calculation accuracy degree is high, the problem that a non-uniform layered soil model is difficult to establish accurately in previous methods is overcome, and the method is suitable for accurate calculation of distribution of direct currents in an alternating currentsystem in the case of complex soil compositions.

The present invention provides a cement soil in-situ sampling device and a sampling method using the same. The cement soil in-situ sampling device includes a sampling container and a sampling structure, which are fixedly installed on a cutting device of the underground construction equipment. when the cutting device moves downwards in the formation, a pressure plate of the sampling structure abuts against an upper limit plate of the sampling structure by the upward pressure of the cement soil, and at least one group of links of the sampling structure press a cover plate of the sampling container, such that the cover plate is always in the closed state before the cutting device moves downwards to a predetermined depth, thereby avoiding mixing of the cement soil in the non-detection depth into the sampling container. When the cutting device moves upwards in the formation, the pressure plate is driven by the downward pressure of cement soil to rotate downwards and drive at least one group of links to move, so as to automatically open the cover plate; and the soil cement in the detection depth enters and fills the sampling container to complete the cement soil sampling, thereby improving the detection accuracy of the cement soil parameters.