121 results about "Soil conductivity" patented technology

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 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.

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 method and device for detecting moisture content and electric conductivity of soil. The method comprises the following steps: inserting two soil moisture content detecting electrodes into the detected soil; inserting two soil electric conductivity detecting electrodes between the two soil moisture content detecting electrodes; alternately and circularly applying two sine excitation signals with different frequencies to the detected soil; respectively obtaining output voltage values of the detected soil under the two sine excitation signals with different frequencies, calculating a resistance value and a capacitance value of the detected soil by virtue of the output voltage values and solving the soil moisture content according to the resistance value and the capacitance value; and obtaining voltage values and current values of the two soil electric conductivity detecting electrodes under the sine excitation signals with any frequency and solving the electric conductivity of the soil by combining distance parameters between the soil moisture content detecting electrodes and the soil electric conductivity detecting electrodes. The method and device for detecting the moisture content and the electric conductivity of the soil are suitable for quick detection of the moisture content and the electric conductivity of the vehicle-mounted large-area soil and are capable of greatly improving the detection efficiency and reducing the detection cost.

The invention relates to a multifunctional carrier soil conductivity real-time detector, wherein it is formed by electrode sensor unit, data collecting-processing unit; said electrode sensor unit is formed by support, wheel, and post electrode, while the wheel and post electrode are fixed on the support; the data collecting-processing unit comprises power convert circuit, signal convert-amplify circuit, A/D converter, processor and liquid crystal display circuit; the data collecting-processing unit via one multi-core cable is connected ton the electrodes of electric sensor. The invention uses current-voltage four-end method, and six-post-electrode design, without less damage on soil; and it uses separated design, therefore, even the soil end of electrode is damaged, it can replace accident part easily.

The invention discloses a measuring device of soil conductivity, mainly comprising a sensor unit and a data acquisition and processing unit; the sensor unit mainly comprises electrodes which are configured in a linear equal interval manner; the data acquisition and processing unit mainly comprises a voltage conversion circuit, a signal conditioning circuit, an analog-to-digital converter, a data controller and a liquid crystal display circuit, and also comprises a alternating-current source signal generating circuit, an alternating-current constant current source output circuit and an alternating-current constant current source regulating circuit. According to the measuring device of soil conductivity, the invention also discloses a measuring method of soil conductivity. The invention can regulate the size of exciting current input into the soil at any time according to soil characteristics of the measured farmland so as to guarantee that the sensor works at the linear area under any soil condition, has high measuring accuracy and also has the function of data display and storage.

The invention discloses a farmland environment monitoring device, which comprises a soil water content sensor (1) and a soil conductivity sensor (2) combined on the tail end of a support rod (4), and an insulating ring (3) for isolating the soil water content sensor (1) from the soil conductivity sensor (2), wherein the support rod (4) has a hollow structure; the soil water content sensor (1) and the soil conductivity sensor (2) are connected with a sensor signal conditioning unit (7) through a coaxial line (5) in the support rod (4); a solar power supply (10) is used for supplying power to the device and transmitting voltage information to an information collection unit (8); and the information collection unit (8) is used for collecting signals outputted by the sensor signal conditioning unit (7), acquiring the solar intensity information according to the voltage information transmitted by the solar power supply (10) and transmitting data with a wireless transceiving module (9). By adopting the solar power supply for supplying power to the device, the invention can ensure the continuous normal operation of the device, and the wireless transceiving module can achieve long-distance data transmission.

The invention provides a soil moisture content monitoring instrument based on an embedded system, which comprises an AVR series Megal 16 singlechip, an arch electrode couple and a soil moisture sensor comprising signal conditioning circuits; a Samsung ARM7 S3C44BOX chip, peripheral circuits and an epigynous machine controlling system which comprises a liquid crystal monitor with a touch screen; a wireless communication module; and a power supplying system which comprises a solar panel and a storage battery. The singlechip gathers directly the soil electrical conductivity data which are measured by the soil moisture sensor and transferred into soil moisture data inside the singlechip; at the same time, through the wireless communication module and according to the requirements of the epigynous machine, the measured data are transmitted in real time or fixed time, or the controlling orders of the epigynous machine are received.

A system for measuring soil properties on-the-go using a narrow profile sensor unit is provided on an implement for traversing a field. The sensor unit includes a front disk/coulter arranged to open a slot in the soil, a runner assembly arranged to follow behind the front disk/coulter for sliding contact with the soil in the slot, and a rotating disk/spoked wheel arranged to follow behind the runner assembly to close the slot. The front disk or coulter serves as a first electrode of an electrode array, the runner assembly has second and third electrodes attached thereto, and the rotating disk/spoked wheel serves as a fourth electrode. The electrode array can be used to measure soil electrical conductivity at multiple depths and to measure soil moisture. An optical window and pH sensor can also be incorporated into the runner assembly to measure soil reflectance and soil pH.

Method and apparatus determining the water absorption gradient and controlling the irrigation system based upon the water absorption gradient. The means for determining uses at least a first electrical coupling and a second electrical coupling, which electrically couple with a first probe and a second probe, placed in the soil near the at least one plant.

The invention discloses a Red Beach wetland saline-alkali soil suaeda heteroptera ecological repair method. Soil is improved through methods of fertilizing, soil turning and like, after the severely degraded wetland soil is improved, saline land suaeda salsa can successfully grow, deep tillage can obviously lower the salt content in the surface layer of the soil, the germination rate of suaeda heteroptera with different kinds of sowing density is also increased by 6.8-34 times, the utilization rate of seeds of suaeda heteroptera is greatly increased, and the cost for an enterprise to buy the seeds to carry out ecological repair is lowered. Data of the temperature, the humidity, the conductivity and the like of multiple groups of experimental fields is measured and compared, after the soilis turned, it is found that physical and chemical properties of the soil are obviously changed, factors, which influence the growth of suaeda heteroptera, like the conductivity (an EC value) and the salinity, of the surface layer soil are all obviously lowered, the deep tillage makes the conductivity of the surface layer soil lowered by 24.86%, and after the deep tillage, the quantity of caves ofHelice tridens tientsinensis is lowered by 12.5%.

The invention discloses a multi-configuration detection device for detecting soil conductivity based on the current-voltage four-terminal method. The following sequence is arranged at intervals in a single row: the first detection electrode, the second detection electrode, the first excitation electrode, the third detection electrode, the fourth detection electrode, the second excitation electrode, the fifth detection electrode and the sixth detection electrode; the first excitation electrode The electrode is located at the center position between the second detection electrode and the third detection electrode, and the second excitation electrode is located at the center position between the fourth detection electrode and the fifth detection electrode; the distance between adjacent detection electrodes is equal; The pairwise combination of signal detection electrodes constitutes a multi-configuration detection device. The invention can simultaneously detect the electrical conductivity of multi-region and multi-layer soil, has a large detection region, and can effectively improve detection efficiency and detection precision.

The invention discloses a soil temperature and moisture and conductivity detection device and relates to the field of soil detection. The detection device comprises a device body, wherein the device body comprises a detection area and a drill bit; a top tray and a chassis are arranged in the detection area; the drill bit is rotationally connected with the chassis; a supporting column penetrating through the top tray and the chassis is arranged on the drill bit; the tail end of the supporting column is connected with a rotary handle; a plurality of air holes are formed in outer side walls of the detection area; a chute is formed in the detection area; a baffle plate in sliding connection with the chute is arranged on an inner side wall of the detection area; a microprocessor, a moisture sensor, a temperature sensor, a soil conductivity tester and a signal emission device are arranged inside the detection area; the moisture sensor, the temperature sensor, the soil conductivity tester andthe signal emission device are all electrically connected with the microprocessor. According to the soil temperature and moisture and conductivity detection device, the device can be controlled to enter into soil in different depths to detect the soil by manually rotating the rotary handle, real-time information of the soil can be effectively acquired, and planting of crops is facilitated.

The invention discloses a monitoring and evaluation method for seawater intrusion and soil salinization. The monitoring and evaluation method comprises the following steps: acquiring soil electric conductivity ECe of a to-be-detected area; acquiring a groundwater level L and groundwater electric conductivity ECw of the to-be-detected area; fitting a relationship of the groundwater level L and the groundwater electric conductivity ECw by using a Marquardt method according to the groundwater level L and the groundwater electric conductivity ECw, and fitting to generate a soil electric conductivity fitted value (shown in the description); selecting N monitoring points from the to-be-detected area, and respectively acquiring the soil electric conductivity ECei and the soil electric conductivity fitted value (shown in the description) of each monitoring point as well as a soil electric conductivity fitted result average value (shown in the description) of the N monitoring points so as to calculate out an evaluation result of seawater intrusion and a soil salinization disaster chain effect. According to the monitoring evaluation method disclosed by the invention, the seawater intrusion degree and the soil salinization degree of the to-be-detected area can be accurately monitored, and the influence degree of the seawater intrusion on soil salinization disaster can be accurately judged, so that the seawater intrusion and a soil salinization grade can be comprehensively evaluated.

The invention provides a soil parameter measurement device, which comprises a soil moisture detection module, a solid conductivity detection module and a soil temperature detection module, wherein the soil moisture detection module comprises a double-explorer probe; the double-explorer probe comprises a first explorer and a second explorer; the soil conductivity detection module comprises four Wenner-configuration explorers; one explorer, which is located on an outer side, in the four explorers is the second explorer; a holding space is arranged in the interior of another explorer, which is located on the outer side, along an axial direction; the soil temperature detection module comprises a four-wire-system armored platinum resistor arranged in the holding space; the four-wire-system armored platinum resistor is insulating with the another explorer located on the outer side. The explorers of the soil parameter measurement device are reasonable in structural design; the problems of the mutual influence, the low precision and a big error, which are caused by the spatial abnormity of soil and exist during multi-sensor measurement, are avoided.

The invention discloses a method for rapidly discriminating expansive soil (rock) on site by the use of soil electrical conductivity, and belongs to the technical field of rock and soil mechanics and engineering. The method comprises the following steps: (1) preparation in advance: establishing a universal relationship curve between soil free-expansion rate and electrical conductivity, or establishing a relationship curve between soil free-expansion rate and electrical conductivity on the special site; (2) on-site sampling: preparing a soil paste with water content being 70%, and uniformly stirring soil and water by the use of a glass rod for later use; (3) on-site test: testing the conductivity of the above soil sample by the use of a soil conductivity probe, followed by recording; (4) expansibility discrimination: conjecturing the free-expansion rate of the soil sample by the conductivity of actually measured soil sample, and determining the grade of the expansive soil (rock) according to Technical Specifications for Construction Ground in Expansive Soil Areas (GBJ112-87). The method provided by the invention is simple, practical, rapid and accurate, is easy to operate, is especially suitable for project site, and is of great significance for engineering design and construction.

The invention relates to a real-time convenient reliable rapid diagnosis method for salination degree of greenhouse soil and a low-cost on-site detection apparatus, which is installed in a wireless measurement and control network of a greenhouse and deployed on the site for production of greenhouse crops. Simulation research on salination degree of greenhouse soil is carried out, and the method effectively combines the effect of spectrum signals on aberration. On this basis, sample collection of salination degree of soil is established as a reference graph database; and the reference graph database for salination degree of soil comprises prominent features including gray scale, image edge, contour, surface and spectral line. Finally, an obtained graph (including a spectrum information graph) is compared with the reference graph database, thereby realizing inversion and simulation of the status of soil salination; with the addition of soil conductivity information obtained through measurement, the total salt content of the soil can be speculated. The invention provides the on-site detection equipment for soil information of modern greenhouse, has advantages of high efficiency, reliability and convenience for operation, can be used for real-time analysis of soil nutrient status, and provides reliable technical support for scientific guidance for crop fertilization management.

The invention discloses a soil temperature, moisture and conductivity measuring device which mainly comprises a sensor unit, a data acquisition and processing unit and an MCU. The sensor unit mainly comprises a soil temperature sensor, a soil moisture sensor and a soil conductivity sensor. The data acquisition and processing unit mainly comprises a voltage conversion circuit, a signal generating circuit, a signal processing circuit, an analog-to-digital conversion circuit and a 485 communication circuit. The device is a detection device which integrates soil temperature, soil moisture and soil conductivity measurement. A wiring end is arranged on one end of each sensor. Each wiring end consists of three probes, namely left, middle and right probes. The positions of three probes are parallel to each other. A trigeminal probe structure is used, and each sensor can be conveniently and rapidly implanted into the soil and fixed. The device has the advantages of simple structure and low cost, can simultaneously measure the moisture, temperature and conductivity in the soil. The measurement time of the temperature, moisture and conductivity of the soil is shortened. The measurement efficiency is improved.

The invention relates to an accurate water feeding and fertilization method, in particular to a method for carrying out water feeding and fertilization by detecting weather and soil indexes. According to the technical scheme, the weather and soil indexes are detected through a sensor, the weather indexes are fine weather or cloudy weather or rainy weather, and the soil indexes comprise soil temperature, soil electric conductivity and soil tension. A water feeding and fertilization system determines a water feeding and fertilization scheme on crops according to the weather and soil index data detected by the sensor. According to the method for carrying out water feeding and fertilization by detecting the weather and soil indexes, external weather and coil environment are combined, under different environment conditions, different water feeding and fertilization schemes are developed, great guiding effect is achieved on farm irrigation and fertilization, water saving and fertilizer saving are achieved, and the purpose of crop high yield is achieved.

The present invention provides an extraction method for low-sodium chloride and high-glutamic acid plant-salt from moderate salinization suaeda salsa, and includes suaeda salsa cultivation and plant-salt extraction; the plant-salt extraction comprises washing and subcritical liquid ammonia extracting. The suaeda salsa is high in emergence rate and transplanting survival rate; in mid-October, the suaeda salsa has a plant density of 500-510 plants/m2, an average biomass of 980-1100 g/m2 and a cover degree of 96-97%; the method can effectively improve saline-alkali soil of planting areas, reduce soil conductivity, and reduce soil salinity; the content of sodium chloride in the prepared plant-salt is 22.7-22.9% and the content of potassium chloride in the prepared plant-salt is 13.3-13.6% the prepared plant-salt has balanced nutrition indexes and significantly increased contents of aspartic acid, arginine, lysine, glutamic acid, glycine.

The invention provides a forest soil parameter measuring device and method. The device comprises a soil moisture detecting module, a soil conductivity detecting module, a soil temperature detecting module, a power source, a power control module, a clock module and a processor. Each one of the soil moisture detecting module and the soil conductivity detecting module comprises a probe. The soil temperature detecting module and the probe are installed on an installation body. The clock module is connected to the processor and provides a clock signal to the processor. The processor is connected tothe power control module. According to the clock signal, a control signal is output to the power control module. The power source is respectively connected to the three detection modules. The power control module is connected to the power source. According to the control signal, powder is output to the soil moisture detecting module and the soil temperature detecting module or is output to the soil conductivity detecting module and the soil temperature detecting module. The probes realize time division multiplex access so that the mutual influence between the various functional modules is avoided during measurement and the detection accuracy is improved.

The invention relates to the technical field of agricultural production and discloses a variable organic fertilizer application device and method based on conductivity detection. The variable organicfertilizer application device comprises a soil conductivity detecting mechanism, a traction device, a variable fertilizer application control system and an organic fertilizer throwing mechanism, wherein the soil conductivity detecting mechanism, the variable fertilizer application control system and the organic fertilizer throwing mechanism are all arranged on the traction device, the soil conductivity detecting mechanism is used for detecting soil conductivity, the variable fertilizer application control system controls organic fertilizer application amount of the organic fertilizer throwingmechanism according to the soil conductivity. The soil conductivity is measured online through the soil conductivity detecting mechanism, a prescription map is generated, the organic fertilizer throwing mechanism is controlled to perform variable and accurate fertilization according to calculation of the variable fertilizer application control system, the labor cost can be reduced, fertilizer throwing is uniform, the working efficiency is high, online variable and accurate fertilization is achieved, and the mechanical and automatic degree is improved.