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1019 results about "Soil humidity" patented technology

Fuzzy-control-based internet of things intelligent irrigation and fertilization control method and system

The invention discloses a fuzzy-control-based internet of things intelligent irrigation and fertilization control method and system. The method comprises the first step of data collection and processing, wherein limiting values of the soil humidity, nutrients and pond water level and the irrigation and fertilization planning time are set and stored in a database according to the water demand regulation and a fertilization formula of crops, and collected soil temperature and humidity, soil nutrients, air temperature and humidity, air speed, rainfall, flow, pond water level and pipe network pressure data; the second step of intelligent control, wherein corresponding data are read from the database and an irrigation valve and a fertilization valve are intelligently controlled by the adoption of the fuzzy control algorithm and a water and fertilizer coupling mode, by comparing the current pond water level with the set limiting value of the pond water level, starting and stopping of a water pump are intelligently controlled, and the speed of the water pump is adjusted and controlled by a PID algorithm. The fuzzy-control-based internet of things intelligent irrigation and fertilization control method and system have the advantages of being good in performance, complete in function, high in expansibility, easy to operate and manage and the like, and intelligent management and control are achieved by the adoption of fuzzy control.
Owner:贵州省水利科学研究院 +1

Method for assimilating remote sensing data of soil humidity in watershed scale

The invention provides a method for assimilating remote sensing data of soil humidity in a watershed scale. The method comprises the following steps of: improving a watershed runoff producing calculation module and developing a distributed hydrological model which is suitable for assimilating remote sensing soil humidity information and describes a soil hydrodynamic process; introducing a particle filtering sequence data assimilation method of information science, and continuously merging and assimilating new remote sensing observation data in a dynamic operation process of distributed hydrological process numerical simulation so as to acquire updated watershed soil humidity assimilated data during sequential assimilation; feeding the updated watershed soil humidity assimilated data back to a distributed hydrological model platform; and gradually estimating the time and space distribution pattern of watershed soil moisture content. Practices prove that by the method, not only high-precision and physically consistent watershed soil humidity data can be provided for research on hydrology, zoology, environment and agriculture, but also the foundation is laid for performing four-dimensional data assimilation processing on soil humidity data of an upper soil layer acquired by using remote sensing retrieval, and improving the precision of the model.
Owner:NANJING UNIV

Intelligent irrigation fertilizing decision-making control system

The invention relates to an intelligent irrigation fertilization decision-making control system, comprising an input unit, an output unit, a data acquisition unit and an irrigation control unit, wherein, a decision-making analysis unit arranged in a decision control database receives the data from the input unit and exchanges data with a privilege unit after processing the received data, and then exchanges data with a fuzzy reasoning unit which also receives output data of a data management unit; after performing logical judgment and processing according to the received data, the fuzzy reasoning unit outputs the data to a control management unit; a sensor of the data acquisition unit acquires and transfers the soil humidity data to the data management unit; a controller of the irrigation control unit receives the data from the control management unit, and transfers the data to a switching quantity output module after processing, and the switching quantity output module transfers the data to a solenoid valve. The intelligent irrigation fertilization decision-making control system has the advantages that: crop physiological water demand indicators are introduced into the computer automatic control field, the irrigation fertilization decision-making is carried out through an irrigation indicator database and the fuzzy classification technology.
Owner:CHINA AGRI UNIV

Method for inverting surface soil physical parameters through passive microwave remote sensing

The invention discloses a method for inverting surface soil physical parameters through passive microwave remote sensing. The method comprises the steps as follows: step one, brightness temperature data and MPDIes (microwave polarization difference indexes) of an AMSR-E passive microwave remote sensing brightness temperature image are acquired by a launched satellite-borne passive microwave remote sensing meter AMSR-E; step two, a relationship of smooth surface reflectance, surface soil roughness parameters, MPDIes and vegetation optical thickness is acquired through deduction; step three, surface soil humidity mv and soil roughness h are calculated; and step four, the surface soil temperature TS is calculated. The method is based on a simplified passive microwave radiation transfer equation and combined with the MPDIes, a Q/H surface soil roughness model, a vegetation optical thickness model, a Fresnel equation and the like, so that a physical inversion model for the surface soil determinant attribute parameters including the soil temperature, the surface soil temperature and the soil roughness is constructed; and the method can be used for inverting the surface soil temperature, soil humidity and surface roughness distribution of China and even the global region and has important scientific significance.
Owner:SOUTH CHINA BOTANICAL GARDEN CHINESE ACADEMY OF SCI +1

Compound microbes for reducing and disinfecting greenhouse soil and soil disinfection method

The invention relates to the greenhouse crop planting field, in particular to compound microbes for reducing and disinfecting greenhouse soil and a soil disinfection method, and solves the problem of multiple defects in the prior art. The compound microbes comprise bacteria, actinomycetes, saccharomycetes and moulds. The soil disinfection method includes the steps of selecting June to September as a disinfection period to apply crop straws, organic fertilizer and the compound microbes on the soil after the crops are harvested; deeply plowing soil layers to form small ridges; covering ridge surfaces with plastic film, filling enough water under the film till the soil humidity achieves 100%, and sealing the mulching film and covering the greenhouse plastic film for 20 to 25 days; and uncovering the greenhouse plastic film and removing the mulching film for planting. According to the compound microbes for reducing and disinfecting greenhouse soil and the soil disinfection method, the method is non-toxic, harmless, pollution-free and residue-free, pathogenic bacteria, ova and the like in soil plough layers are killed, soil organics are increased, the soil physical and chemical structure is improved, soil fertility is improved, and good foundation is laid for improving product qualities.
Owner:AGRI BIOTECH RES CENT OF SHANXI PROVINCE +1

Intelligent control system and control method for greenhouse

The invention relates to an intelligent control system for a greenhouse. The system comprises the greenhouse, a drip irrigation mechanism, a heating mechanism, a light supplementing mechanism, an automatic ventilation mechanism, a roller shutter mechanism, solar photovoltaic panels, a wind power generation device and a control cabinet and is characterized in that the drip irrigation mechanism is composed of drip irrigation pipes and water pumps; the heating mechanism is composed of heat supply pipes and a hot air generation device; the light supplementing mechanism is composed of multiple light supplementing lamps; the automatic ventilation mechanism is composed of two ventilation fans; the roller shutter mechanism is arranged on a sun-facing surface of the greenhouse; a control circuit iscomposed of a micro-controller, a temperature and humidity sensor, a PH valve sensor, an illumination sensor, a CO2 concentration sensor and a soil humidity sensor. The intelligent control system forthe greenhouse performs drip irrigation, ventilation, light supplementation, and hot ventilation operation when water content of soil, CO2 concentration, illumination and temperature are excessivelylow. Therefore, automated control over growth of crops in the greenhouse is realized. A better environment is created for growth of crops in the greenhouse. The intelligent control system for the greenhouse has evident beneficial effects and is suitable for application.
Owner:BINZHOU UNIV

Indoor intelligent plant maintenance device, system and method

The invention relates to an indoor intelligent plant maintenance device comprising an environment information collection sensor, a central processor, and a maintenance motion module. To be specific, the environment information collection sensor is used for collecting environment information of the plant; the input terminal of the central processor is connected with the environment information collection sensor and the central processor is used for receiving plant environment information collected by the environment information collection sensor and carrying out operation and comparison on the environment information and a plant growth characteristic model to obtain a control signal; and the maintenance motion module connected with the output terminal of the central processor is used for executing a corresponding maintenance motion according to the control signal of the central processor. In addition, the invention also relates to a system and method that use the device. The device, system and method have the following beneficial effects: environmental factors including soil humidity, air humidity, an air temperature, illumination density and the like can be monitored in real time; and determination of environmental factor adjustment can be made and a corresponding operation is executed according to the plant growth characteristic model, thereby realizing an intelligent maintenance effect.
Owner:SUN YAT SEN UNIV

Intelligent irrigation control system and method based on short message service

The invention relates to an intelligent irrigation control system and method based on short message service. The intelligent irrigation control system comprises a soil temperature sensor, a soil humidity sensor and an air temperature sensor which are arranged in a farmland and connected with the input end of a lower computer, wherein the lower computer receives the temperature information and humidity information of the farmland and sends the temperature information and the humidity information to an upper computer through a serial port; meanwhile, the lower computer monitors a command of the upper computer in real time, and is also connected with electromagnetic valves arranged in irrigation regions and used for controlling the opening and closing of the electromagnetic valve of each irrigation subregion; the upper computer is also connected with a wireless transmission module; and a user inputs a control command into the upper computer by a mobile phone, a computer or a fixed-line telephone through the wireless transmission module. According to the invention, the control command is input through a PC (personal computer) interface or common mobile phone or operation parameters are collected through the PC interface or common mobile phone, and automatic irrigation is carried out according to the acquired environment parameters or preset plan. An automatic irrigation control system based on a PC development platform is high in stability, is flexible in operation, and is suitable for large-scale popularization and application.
Owner:XIAN RUITE RAPID MFG ENG +1

Soil measuring device for land planning

ActiveCN109884270ASmooth drillingSmooth soil looseningWithdrawing sample devicesEarth material testingLand-use planningDrive motor
The invention discloses a soil measuring device for land planning, and relates to the technical field of land planning equipment. A driving motor is fixedly arranged on the upper part of a lifting plate through a motor bracket, a rotating shaft is fixedly arranged at the output end of the driving motor, the upper end of the rotating shaft is rotatably arranged on the middle part of the lifting plate through a bearing, and a drill bit is fixedly connected to the bottom end of the rotating shaft; a fixing plate is arranged on the lower side of the lifting plate, two electric lifting rods are symmetrically and fixedly arranged on the left side and the right side between the lifting plate and the fixing plate, the upper ends of the electric lifting rods are fixedly connected with the bottom ofthe lifting plate, and the bottom ends of the electric lifting rods are fixedly connected with the upper part of the fixing plate; leg supporting mechanisms are vertically and fixedly arranged on four corners of the bottom of the fixing plate; and a detection mechanism fixedly sleeves the outer side wall of the rotating shaft on the upper side of the drill bit. Technicians can conveniently sampledeep-level soil, the sampled depth can be effectively controlled, the humidity of a hard soil layer can be effectively measured, and soil humidity sensors are damaged.
Owner:HENAN UNIV OF URBAN CONSTR

Manufacturing method for flame-retardant organic mulch for landscapes and greenbelts

The invention relates to a manufacturing method for a flame-retardant organic mulch for landscapes and greenbelts. The method comprises the following steps: separately collecting landscape wastes such as tree branches, tree leaves, stems and leaves of flowers and plants generated in the greening and maintaining process; crushing the tree branches and processing the tree branches into particles about 1.5-7.0 cm in length; crushing the tree leaves and the stems and leaves of flowers and plants into fine particles about smaller than 0.5 cm in diameter; then adding water, a fermentative strain and a fermentation catalysis substance, neatening the materials in piles, fermenting for 30-45 days and then paving the materials in the greenbelts; finally spraying a water-soluble flame-retardant agent to the surface of the organic mulch. According to the method, the cyclic utilization of the landscape wastes can be implemented; the rising dust is reduced; the water retention capacity of the landscapes is improved; the soil humidity is retained; the hardening of the soil is avoided; the growth of weeds is inhibited; the soil fertility is enhanced; the greenbelt landscape effect is improved; the safety of the organic mulch is improved.
Owner:沈阳市园林科学研究院(沈阳市环境卫生工程设计研究院)

System and method for carrying out layered constant-pressure filtration irrigation according to root distribution of plants

ActiveCN105794597AIrrigation in real timeReal-time surface irrigationWatering devicesCultivating equipmentsGrowth plantPlant roots
The invention discloses a system and a method for carrying out layered constant-pressure filtration irrigation according to root distribution of plants, and belongs to the field of agricultural water-saving irrigation and automatic control. According to the invention, influence of humidity nonuniformity of surface layer soil and deep layer soil on plant growth is considered, and infiltration irrigation tubes are embedded at proper depths of the surface layer soil and the deep layer soil so as to establish a spatial distribution filtration irrigation system. Soil critical drought humidity values at the surface layer soil and the deep layer soil are used as set values, and soil humidities at the surface layer soil and the deep layer soil are compared with the set values so as to control opening of a water pump and electromagnetic valves. A soil moisture change condition at a specific position is used as an opportunity of closing the electromagnetic valves, and constant-pressure control is carried out by controlling a rotating speed of the water pump, thereby achieving automatic and accurate control on irrigation. According to the system and the method disclosed by the invention, a fertilizer which is necessary for plants is added into water, is directly conveyed to plant roots by the infiltration irrigation tubes, and is directly adsorbed by the plants, so that pollution of the fertilizer to the environment and the underground water is effectively avoided, and the utilization rate and water saving percentage of the fertilizer are greatly improved.
Owner:JIANGSU UNIV

Fully-automatic sprinkling irrigation system and sprinkling irrigation method therefor

The invention discloses a fully-automatic sprinkling irrigation system and a sprinkling irrigation method therefor. The fully-automatic sprinkling irrigation system is arranged in a sprinkling irrigation machine passage in farmland, and the farmland is symmetrically arranged at the two sides of the sprinkling irrigation machine passage. The fully-automatic sprinkling irrigation system comprises a self-walking sprinkling irrigation machine, a locating moving device, a plurality of located water supply hydrants, soil humidity monitoring devices and an electric control device; the locating moving device is arranged in the sprinkling irrigation machine passage along the length direction of the sprinkling irrigation machine passage; the located water supply hydrants are uniformly distributed in the sprinkling irrigation machine passage along the left-and-right direction in a manner of corresponding to water fetching joints of water fetching mechanisms, and rapid joint structures are arranged at top ends of the located water supply hydrants; and the soil humidity monitoring devices comprise a plurality of soil humidity sensors which are uniformly distributed in the farmland in a buried manner. According to the fully-automatic sprinkling irrigation system, a spool-type sprinkling irrigation machine can automatically carry out fixed-point sprinkling irrigation and automatically control sprinkling irrigation speed according to volume of sprinkling irrigation required by the farmland, and then, full-automated sprinkling irrigation capable of avoiding influence caused by human factors is achieved, so that the fully-automatic sprinkling irrigation system is particularly applicable to the sprinkling irrigation operation on large-area regular-planned farmland.
Owner:JIANGSU HUAYUAN IRRIGATION & DRAINAGE

Rice field growth environment monitoring and irrigation control system

The invention discloses a rice field growth environment monitoring and irrigation control system, and belongs to an automatic control technology of agricultural engineering. The system is formed by connecting a central control unit and a rice field growth image monitoring unit, a rice grid field irrigation control unit, a rice grid field monitoring unit and a park meteorology monitoring unit by adopting Zigbee wireless communication respectively; the central control unit comprises wireless communication and an industrial control computer; the rice field growth image monitoring unit consists of wireless communication and an industrial camera; the rice grid field irrigation control unit comprises wireless communication, a controller, a flow meter, a water level meter, a water outlet valve and a water inlet valve; the rice grid field monitoring unit consists of wireless communication and sensors of water temperature, mud temperature, soil humidity, water surface evaporation, water level, soil heat flux, leaf humidity and the like; and the park meteorology monitoring unit comprises sensors of environmental temperature, humidity, dew point temperature and the like. The system has many monitoring and control projects, high automation degree, accurate and timely monitoring and control and accurate data.
Owner:HEILONGJIANG BAYI AGRICULTURAL UNIVERSITY

Method for determining the process of root system of plant absorbing soil moisture

InactiveCN101162221AEvaluate and improve water absorption modelsWeighing by removing componentPlant rootsSoil moisture content
The invention discloses a method for determining the process of plant roots absorbing soil moisture content. The method adopts a detachable earth column with plants inside; a soil humidity sounding pipe is arranged in the middle of the earth column, and the earth column is arranged in field earth pit; the vertical distribution of plant roots density can be acquired through stratified earth collection, roots washing and roots screening by regularly detaching the earth column; the actual plant transpiration is acquired through timed weighing, and the earth column is weighed at least one time a day. According to related theory principle and experimental data determined actually and accurately, and by combining susceptibility factors such as transpiration rate, roots density distribution, soil water potential, soil water content, unsaturated soil hydraulic conductivity and according to mass conservation, the roots water adsorption function of transpiration on the soil profile of the root zone distributed according to a certain weight factor is determined, profile distribution of roots water adsorption rate is figured out by adopting roots water adsorption rate reverse method and numerical value iteration to determine the parameter of empirical function, thereby achieving the determination of the process of roots absorbing water.
Owner:NORTHWEST A & F UNIV
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