1232 results about "Soil temperature" patented technology

The present invention provides a multitude of embodiments for landscape water conservation with automated water budgeting or seasonal adjustment. Water budget automation may be implemented within an irrigation controller, by means of an add-on or a plug-in to the controller, or broadcast from a central location. The environmental data used for automated water budgeting may be historical including ambient temperature, wind, solar radiation, relative humidity, soil moisture, soil temperature, or evapotranspiration, or combinations thereof, or with a combination of current sensor data. The automated water budgeting may be accomplished with a percentage accumulation method which adjusts watering intervals and schedules, or on a daily percentage basis. In addition, government based restricted watering schedules may be combined within all the above embodiments to provide additional flexibility for water conservation.

A multi-sensor system rapidly measures diffuse reflectance of soil, soil conductivity, and other soil properties in situ, in three dimensions. The system includes a tractor-drawn implement containing a sensor shank used for X-Y axis measurements, a hydraulic probe implement containing a sensor probe for −Z axis measurements, and a set of visible and near-infrared spectrometers, controls, and firmware that are shared by each implement. Both implements include optical sensors and soil electrical conductivity sensors. The probe implement incorporates a sensor that measures insertion force, and the shank implement includes a soil temperature sensor. These combinations of sensors are used to calibrate the system and to characterize the soil properties within a field or area. Geo-referenced soil measurements are collected with the shank implement to identify optimal locations for conducting sensor probe insertions. The probe implement is then used for sensor probing and for collecting soil core samples for lab analysis.

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.

The present invention is directed to improved seed coatings which facilitate fall or early spring planting while maintaining seed dormancy until soil temperatures are appropriate for successful germination. The improved seed coatings contain encapsulated phase change materials within a polymeric shell which preserve the dormancy of the seed during early planting by slowing the rate at which the seed temperature rises in the event of a temperature spike thus preventing premature germination. The encapsulated phase change material is a material characterized by a solid/liquid or liquid/solid phase change which occurs at a temperature which ranges from about −5 to about 20° C., preferably between about 0 to about 19° C., most preferably between about 5 to about 15° C. The solid/liquid or liquid/solid phase change is further characterized by an effective enthalpy of fusion/crystallization for the solid-liquid/liquid-solid phase change equal to or greater than 20 J/g when determined by Differential Scanning Calorimetry.

The invention discloses a big data analysis based intelligent greenhouse control system and method. The system includes an air temperature and humidity sensor, a light intensity sensor, a carbon dioxide sensor, a soil temperature and humidity sensor, an equipment driving module, a CC2530, a ZigBee/WiFi gateway, a cloud server and a network camera; the air temperature and humidity sensor, the light intensity sensor, the carbon dioxide sensor and the soil temperature and humidity sensor are used for collecting the environment information of a greenhouse; the equipment driving module is used for adjusting the environment parameters of the greenhouse; the network camera is used for collecting the growth pictures of crops in the greenhouse; the CC2530 sends a control instruction to the equipment driving module; the equipment driving module transmits the control instruction to a ventilating fan, a sprinkling irrigation facility and a light supplementary lamp/light shading curtain, so that the environment parameters in the greenhouse can be adjusted; and the cloud server determines the growth demands of the crops according to the collected crop growth pictures, an information processing decision system and a convolutional neural network model. Through the growth environment demands of the planted crops analyzed based on big data and equipment that can automatically control and adjust the environment parameters according to the growth environment demands of the crops, manpower costs can be greatly saved, and the output of the crops can be enhanced.

The invention discloses a device for measuring the multiple parameters of soil. The device comprises a hollow supporting rod, signal wires arranged inside the supporting rod, a data acquisition module and a power module arranged on the supporting rod, and moisture sensors and temperature sensors, wherein the moisture sensors and the temperature sensors are arranged alternately in the length direction of the supporting rod and connected with the data acquisition module via the signal wires; the moisture sensors are used for measuring the conductivity of the soil and the moisture content of thesoil at various depths; the temperature sensors are used for measuring the temperature of the soil at various depths and transmitting the measured moisture content, conductivity and temperature of the soil to the data acquisition module; and the data acquisition module is used for calculating the matric potential of the soil according to the received moisture content, conductivity and temperatureof the soil. Accordingly, the device provided by the invention is capable of measuring the multiple parameters of the soil and calculating the matric potential of the soil, thus detecting the conditions of the soil in a long-term, overall and effective way and providing better guidance to agricultural production.

The invention relates to the ground source heat pump technique and particularly relates to a device for monitoring the ground source heat pump system based on the internet of things. The device comprises a soil temperature wireless sensor, an outdoor air temperature wireless sensor, an indoor temperature wireless sensor, water inlet-outlet temperature wireless sensors arranged on a cold-hot resource side and an air conditioner loading side of a cold water machine set, a flow wireless sensor, a wireless intelligent ammeter, a wireless signal collecting module, a local server and a remote monitoring computer. The wireless signal collecting module collects the parameter of each sensor according to the ZigBee protocol, transmits the parameters to the local server by the Internet according to the Modbus protocol, and then stores, computes and displays the COP (coefficient of performance) and the WTF (water transport factor) curves by the ground source heat pump system, and finally transmits the parameters to the remote monitoring computer by the Internet. The device can obtain the CPI (comprehensive performance index), the COP (coefficient of performance) and the WTF (water transport factor) of the ground source heat pump, and is beneficial to monitoring the daily energy-saving situation of the ground source heat pump system and providing evaluation data for the energy-saving improvement of the system.

The invention discloses a method for calculating dynamic water storage capacity runoff yield in soil freeze-thaw process, and belongs to a hydrological science category in geophysical science categories. The method comprises the following steps of: calculating frozen soil depths at different times in grids of a watershed according to soil temperature distribution; analyzing day-by-day spatial distribution conditions of the frozen soil depths so as to obtain field capacities, distributed along with time, of aeration zones in different grids of the watershed; finding out the maximum field capacities in different grids of the watershed, and calculating the maximum water-holding capacity of the watershed; and calculating a soil freeze-thaw runoff yield of the watershed according to the obtained maximum field capacities in different grids and the maximum water holding capacity of the watershed. According to the method disclosed by the invention, the day-by-day soil freeze/thaw, frozen soil depths and soil temperatures can be simulated according to observed air temperatures, and the day-by-day process of thaw/rainfall runoff can be calculated according to rainfall observation, so that the runoff simulation precision in soil thaw periods in spring is improved, scientific basis is provided for the spring flood prevention decisions, and the gap of frozen soil area runoff yield calculation in the existing home and aboard hydrological models is filled.

A soil moisture wireless measuring device comprises two parts, namely a wireless sensing device and a wireless setting device which is connected with the wireless sensing device and is used for detection operation. The wireless sensing device which is used to measure soil water content, soil temperature and soil compactness comprises an impedance converter, a pressure sensor, a temperature sensor, an information acquisition device, a second wireless communication module and a CPU processor. The wireless setting device which is designed as a hand held type instrument comprises a central controller, and a keyboard input module, a display module, a memory module and a first wireless communication module respectively connected with the central controller. The impedance converter consists of three parts, namely a signal source, a transmission line and a probe. The soil moisture wireless measuring device provided by the invention has the advantages that: the device is capable of measuring the soil temperature, soil compactness and soil water content simultaneously; the device has the performances of high bandwidth, high linearity and low power consumption; the device facilitates the realization of the real-time detection of field soil water content with brief design, simple operation and portability.

The invention discloses a water fertilizer medicine accurate application system based on Internet of Things, and a method. The water fertilizer medicine accurate application system based on Internet of Things comprises a meteorological monitoring system, a soil environment monitoring system, an irrigation fertilization medicine application system, and a cloud control platform; the meteorological monitoring system is used for acquiring crop growth vigor, insect and disease, wind speed, wind direction, illumination, evaporation capacity, and rainfall information; the soil environment monitoringsystem is used for acquiring soil temperature and humidity, salt content, water content, nutrient content, pH value, and natural fertility curve data of soil; the cloud control platform is used for drawing a rainfall curve and a natural fertility curve based on received information, drawing crop water need rules and fertilizer need rules, taking the difference of crop water need rules and fertilizer need rules as crop need irrigation amount, taking the difference of crop fertilizer need rules and the natural fertility curve as crop need fertilizer amount, grading crop growth vigor and insect and disease information, determining medicine using amount, and completing crop irrigation and fertilizer and medicine applications using the irrigation fertilization medicine application system.

The invention discloses a wireless monitoring sensor, which includes a top cap (1) a casing (2) and a metal rod (3), wherein the top cap (1) is fixed at the top of the casing (2); a slot is arranged at the bottom of the casing (2); the metal rod (3) is inserted in the slot; a light intensity sensor is arranged in the casing (2) below the top cap (1); an air temperature and humidity sensor is fixedly arranged below the light intensity sensor and inside the casing (2); a soil temperature sensor is arranged inside the metal rod (3); a data processing device is arranged inside the casing (2); the data processing device is electrically connected with the light intensity sensor, the air temperature and humidity sensor and the soil temperature sensor; and a wireless transceiver module is integrated on the data processing device. The wireless monitoring sensor avoids the installation difficulty caused by plenty of wiring, and is convenient to maintain as the use of lead wires as well as the node amount are reduced.

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.

The invention relates to a seedling stage identification method for the resistance of tobacco to the bacterial wilt. The seedling stage identification method comprises the steps of heat preservation pool construction, pool water heating and circulation, wilt bacterium inoculation, tobacco seedling, disease state investigation and grading. The method replaces a conventional field identification result with a seedling stage identification result, identifies a great amount of material in a smaller area, carries out the identification a plurality of times annually, improves the reliability of the result, shortens the identification cycle, saves the site and test cost, and covers little floor space. The seedling stage identification method for the resistance of tobacco to the bacterial wilt is characterized by rapid disease development, good result repeatability, and the like. The seedling stage identification method for the resistance of tobacco to the bacterial wilt can effectively remove the interference on the resistance result caused by soil temperature difference, strain pathogenicity difference, strain quantity difference and other diseases, thereby benefiting the recurrence and comparison of results from different years and different labs. The difference between the attack rates of infection resistant varieties and the disease indexes is obvious; and the appraisal result of the resistance of the variety is basically consistent with the perennial resistance appraisal result obtained by others. The method has greater application potential in the resistance identification and resistance heredity rule study of disease resistant resources and breeding medium materials.

The invention discloses a straw returning biological agent for greenhouse crops and a biological fermentation method. The biological fermentation method comprises the steps: applying a compound microbial agent into a greenhouse, uniformly mixing the compound microbial agent with soil, smashed straws and manure, irrigating the greenhouse with enough water, and sealing the greenhouse for fermentation. The microbial agent enables organic matters and organic fertilizer in the soil and the straws to be quickly fermented, rotted and decomposed, and can quickly kill pests and diseases in the straws and the soil plough layer and quickly increase the content of organic matters and the fertility of the soil; heat generated by rotting fermentation of the organic manure and the straws and heat energy supplied by sunlight under a condition that the greenhouse is sealed can quickly heat the soil to create a high-temperature wet soil environment and enable the temperature in the greenhouse to reach 70 to 80 DEG C; the high temperature in the greenhouse is conducted into the soil to enable the soil temperature in the greenhouse to reach 45 to 60 DEG C; and the high temperature in the greenhouse can kill the pests and the diseases which float in the air and are attached to a wall and a material such as a plastic thin film.

The invention discloses a low-power-consumption wireless monitor and control system for an agricultural greenhouse. The system comprises a remote Web server, a gateway and wireless monitor and control nodes. The wireless monitor and control nodes are responsible for monitoring soil temperature and humidity of a parcel and executing a control command sent from the gateway; the gateway receives data from each wireless monitor and control node and displays the data on a screen in real time, and realizes data interaction with the remote Web server through a 3G network; and the remote Web server provides a monitor and control method with which a farmer can realize remote access by utilizing a browser on a mobile phone and a computer. The wireless monitor and control nodes are powered by lithium batteries, and software and hardware can work for a long time stably by utilizing the low-power-consumption design, so that the system can be arranged at any place of the greenhouse conveniently without being limited by wiring difficulty.

The invention discloses a method for planting potatoes in dry land in an all-film mulching ridging micro-furrow mode. The method includes the following steps of (1) land selection, (2) soil preparation, (3) fertilizer application, (4) ridging, (5) mulching, (6) seed preparation, (7) sowing, (8) field management, (9) disease insect and weed damage prevention, (10) harvesting and (11) waste film removing. The method has the advantages that (1) the number of rain collecting faces is increased, and the rainfall infiltration rate is increased; (2) soil moisture content on ridges and soil temperature are remarkably increased, and nutritional growth of the potatoes is promoted; (3) the soil moisture content on the ridges in rainy seasons is reduced, high-temperature high-humidity stress is relieved, and disease risks are reduced; (4) the potatoes are planted on the tops of the ridges, soil is loose, and tuber development is promoted; (5) mechanical topdressing is facilitated, and fertilizer can be directly applied to the micro ridges; (6) black mulching film is adopted to cover the whole land, and weed in the field is removed; (7) the rainfall utilization efficiency is remarkably improved, and the potato tuber yield is remarkably increased. The method has wide application prospects for potato planting in dry northwest areas.

The invention provides an in-polluted-site heat-intensifying vapor extracting and repairing integrated device and an application method. The integrated device comprises a high pressure fan, a gas-liquid separation tank, an active carbon absorption tower, an automatic control cabinet, a heating electrode, a flow meter, a vacuum gage, a temperature sensor, a humidometer and an organic pollution gas detector; an extracting pipeline is connected with an extracting well, and the heating electrode is embedded in a polluted area. The specific application method comprises the steps as follows: starting the heating electrode to raise the temperature of the soil in the site and promote the desorption of the pollutant in the soil, then starting the high pressure fan, forming a negative pressure in the pipeline to generate flowing of gas from the extracting well to the outside, taking away the pollutant in the soil from the soil along with the flowing of the gas, and enabling the active carbon absorption tower to absorb the gas pollutant to fulfill the purpose of repairing the polluted site. The in-polluted-site heat-intensifying vapor extracting and repairing integrated device and the application method are used for repairing the soil in the organic polluted site, so that not only the pollutant removal rate is improved, but also the influence of the low temperature condition on the vapor extracting technique is further reduced, the effective repairing working time in winter is prolonged, and the purpose of efficiently treating the polluted site is fulfilled.

The invention discloses a remote agricultural information intelligent analysis system and an agricultural environment regulation and control method. In the invention, a wireless network is deployed in the space related to agriculture production first and then all kinds of agricultural information including illumination information, air temperature information, humidity information, soil moisture content information, soil temperature information and the like required in the agricultural production are transmitted through the network; and the data of the collected information is sent to a data center through internet connection to realize the intelligent analysis of the agricultural information, and agricultural equipment is remotely operated according an expert database or self-defined regulation and control rules to realize remote management of the agriculture production. In the invention, a centrally managed agricultural analysis system scheme is established on the basis of public networks including the Internet, the 3G mobile network and the like, so that the public networks are effectively used to provide agriculture production personnel with a remote agricultural information collection and operation function, the efficiency of the agricultural production is improved and the labor intensity of the management is reduced.

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.

The invention relates to a solar hot air system enhanced in-situ bio-ventilation soil restoration system. The system comprises a solar air heat collection system, a ventilation system, a contaminant vacuum extraction system and a gas purification system. The ventilation system is a ventilation pipeline, and the solar air heat collection system is connected with the ventilation pipeline and used for heating air in the ventilation pipeline. The contaminant vacuum extraction system comprises a gas phase extraction pipe and a vacuum pump, the gas phase extraction pipe is directly buried in the heated contaminated soil area, and the upper portion of the gas phase extraction pipe is connected with the gas purification device. The solar hot air system enhanced in-situ bio-ventilation soil restoration system further comprises a nutrient solution injection system, and a nutrient solution is evenly pumped into organic matter contaminated soil through the nutrient solution injection system. According to the system, solar energy serves as a heat source, heated air is injected into a soil embedded radiating pipe, soil temperature is adjusted, soil microbial flora and the nutrition environment are optimized, degradation of microorganisms for organic matter in the contaminated soil is promoted, and then following vacuum extraction is facilitated. By means of the system, energy is saved, the emission of greenhouse gas is reduced, and secondary pollution generated by combustion of fossil fuel is avoided.

The invention relates to a ground source heat pump rock-soil heat response dynamic testing system, which consists of a heating water tank, a circulating pump, a bypass-valve, a heating well, a U-shape pipe, a temperature monitoring well, a data acquisition analyzer, temperature sensors, flow sensors and a heater, and is characterized in that the temperature monitoring well is arranged in the position 0.3-1.2 m away from the heating well, a temperature sensor group identical to temperature sensors group on the heating well is arranged in the temperature monitoring well, and all the temperature sensors and flow sensors are connected with the data acquisition analyzer through signal lines. In testing, a rock-soil original temperature value data test, a basic heating process data test, a strengthened heating process data test and after heating stop data test are respectively carried out on the heating well and the temperature monitoring well. By the comparison of a calculation value and a measured value of a heat transfer model and the revision of rock-soil thermal conductivity, the actual rock-soil thermal productivity is ultimately approximated. The rock-soil temperatures in the heating well and the temperature monitoring well are monitored synchronously to shorten the test time; and the heat transfer conditions of rock-soil at different depths and the mutual influence of wells are accurately mastered to provide data for designing.

The invention relates to a greenhouse energy source comprehensively utilizing system, in particular to a system for comprehensively utilizing energy sources in a greenhouse and belongs to the technical field of the greenhouse. The system is suitable for being used under the conditions of temperature difference between day and night, low temperature in winter and continuous overcast and rainy seasons and mainly improves various energy source utilizing efficiency of the greenhouse through various energy source utilizing technologies. The system for comprehensively utilizing energy sources in the greenhouse comprises a solar heat collecting system, an underground heat storage system, an efficient heat exchange system, a control system, an underground cooling system, a fluid infusion water tank, a circulating pump, a fan and a heat storage tank body. The system remarkably improves the greenhouse energy source utilizing rate by combining a solar energy utilizing technology, a heat exchange technology and a heat storage technology in greenhouse warming, has great technological and economic advantages, can maintain appropriate soil temperature required by plant root systems and ensure the requirement of greenhouse plants to the house temperature, can enable crops to rapidly grow and being high in yield, high in quality and benefit, improves the solar energy utilizing rate of an existing greenhouse, reduces existing energy consumption and production cost, prolongs a production period, and has high economic and social benefits.

A system and method for monitoring soil and water resources is disclosed herein. Sensors capable of monitoring soil temperature, moisture and salinity are utilized with other sensors capable of monitoring such values as air temperature in order to provide real-time parameters to users/operators of land area in order to optimize plant and turf growth, and to optimize water usage.