CN207231966U - A kind of comprehensive soil moisture detection device - Google Patents
A kind of comprehensive soil moisture detection device Download PDFInfo
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- CN207231966U CN207231966U CN201720512734.7U CN201720512734U CN207231966U CN 207231966 U CN207231966 U CN 207231966U CN 201720512734 U CN201720512734 U CN 201720512734U CN 207231966 U CN207231966 U CN 207231966U
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Abstract
The utility model discloses a kind of comprehensive soil moisture detection device,Including workbench,Workbench upper end is provided with two adjustable support frames,Adjustable support frame upper end is provided with measurement container,Measure container left end insertion soil water suction detection device,Measurement container upper end spaced set has several TDT detection devices,Measurement container lower end is provided with γ transmission beam method detection devices,Measurement container right end is provided with inlet channel,Inlet channel upper end is provided with water supply valve,Inlet channel right end is connected with Markov bottle,Soil to be detected is put into wherein by measuring container,Carry out indoor soil treatment,It is convenient and efficient,It effectively have detected the suction in soil using soil water suction detection device,By detecting the different soil moisture content distribution curves for infiltrating the moment with reference to moveable device with γ transmission beam methods,It conveniently have detected the water content and infiltration rate in soil,It is worthy to be popularized.
Description
Technical field
Soil K+adsorption equipment technical field is the utility model is related to, is specially a kind of comprehensive soil moisture detection device.
Background technology
Mineral matter that soil is formed by rock weathering, animals and plants, organic matter that microorganism residuum decomposition produces, geobiont
(solid matter) and moisture (liquid phase substance), the composition such as air (gaseous substance), the humus of oxidation.Solid matter includes soil
Earth mineral matter, organic matter and microorganism pass through nutriment for being obtained after the antibacterial sterilizing of illumination etc..Liquid substance refers mainly to soil moisture.
Gas is the air being present in soil aperture.This three classes material constitutes a unity of contradictions body in soil.They are mutual
Contact, conditions each other, living condition necessary to be provided for crop, is the material base of soil fertility.The soil water is plant absorption
The main source (except hydroponic plant) of moisture, in addition plant can also directly absorb falls the moisture on blade on a small quantity.Soil
The main source of water is precipitation and irrigation water, participates in the moisture systemic circulation of lithosphere-biosphere-atmospheric thermodynamics-circle-hydrosphere, and native
The potassium element being rich in earth is also the main component of nutrient, in soil water movement research, using non-damaged one-point measurement soil
The method of earth water content is very much, but with γ transmission beam methods is still that current researcher usually adopts using method, that is, Neutron of nuclear physics
Measurement means.Wherein change of the γ transmission beam methods due to can relatively accurately measure Soil Moisture profile under instantaneous state,
And there is interlayer high resolution, thus more and more paid attention to be subject to studies in China person, soil moisture content is both research agriculture
The important indicator of industry and forestry Crops Drought, and agricultural irrigation management, the research of Regional Hydrologic condition and basin water balance meter
The Important Parameters of calculation, the change of soil moisture content directly affects farm-forestry crop yield and soil development develops, high salinity soil
The detection in real time of (salt content is more than 6/1000ths) and highest organic soil earth (containing organic matter more than 20%) moisture is always a problem.
Common soil moisture measurement method is divided into the direct methods such as oven drying method, bottle bucket method and electric-resistivity method, dielectric method, NEUTRON METHOD, Near-Infrared Absorption Method
Etc. indirect method, its dielectric method is divided into time domain reflectometry (TDR), frequency domain bounce technique (FDR), standing-wave ratio method (SWR) etc. again.
Application No. 201610194101.6, a kind of entitled reality for the soil moisture measuring instrument for being applicable in different soils depth
With new patent, including soil moisture sensor and the data acquisition display instrument with soil moisture sensor communication connection, soil
Earth moisture transducer includes shell, and shell is divided into the procapsid and back casing two parts sealed by epoxy resin, enclosure
Equipped with electronic circuit device plate and shielded cable, it is integrated with electronic circuit device plate and the passive of concussion is produced by clock circuit
Crystal oscillator, no source crystal oscillator are connected with Schmidt trigger, signal attenuator, probe, real effective detector and for carrying in turn
For the electric source filter circuit of stabilization, ripple-free operating voltage, the utility model cost is low, it is simple in structure, can measure and fit in real time
With the soil moisture of different soils depth.
In all kinds of mathematical problems in relation to soil water movement solve, soil water property --- i.e. hydraulic conductivity k
(θ), specific water capacity C (θ) and the definite of diffusivity D (θ) are a very important job.These general parameters are both needed to pass through reality
The method of survey just can determine that, since these three parameters are all the functions of soil moisture content, at present either indoors or
The problem of crop field is surveyed, and almost all of method all be unable to do without measurement soil moisture content or moisture profile change, but mesh
Preceding many soil testing assemblies are poor in the Soil K+adsorption effect for different gradient, and for soil inner suction and infiltration
The detection of speed does not contrast well, in the measurement to hydraulic conductivity k (θ), specific water capacity C (θ) and diffusivity D (θ), very much
When all individually carry out, mutual related data can not be obtained, therefore devise a kind of comprehensive soil water sorting
Survey device.
Utility model content
In order to overcome the shortcomings of prior art, the utility model provides a kind of comprehensive soil moisture detection device,
Soil to be detected is put into wherein by measuring container, carries out indoor soil treatment, it is convenient and efficient, it is only necessary to collection in worksite soil
After earth sample, it is possible to without being detected on the spot, the gradient of soil horizon can be adjusted by adjustable support frame, is carried out different
The soil permeability detection of the gradient, the suction in soil is effectively have detected using soil water suction detection device, easy to understand soil
Earth and measures one way of the electromagnetic wave signal in sensor probe for the absorbability of moisture by multiple TDT detection devices
Propagation delay time, to realize the medium determination of moisture in soil to be measured, by combining moveable device with γ transmission beam methods
To detect the different soil moisture content distribution curves for infiltrating the moment, the water content in soil and infiltration conveniently have detected
Speed, is worthy to be popularized.
Technical solution is used by the utility model solves its technical problem：A kind of comprehensive soil moisture detection dress
Put, including workbench, the workbench upper end are provided with two adjustable support frames, the adjustable support frame upper end is set
Measurement container, the measurement container left end insertion soil water suction detection device are equipped with, the measurement container upper end is equidistantly set
Several TDT detection devices are equipped with, the measurement container lower end is provided with γ transmission beam method detection devices, the measurement container right end
Inlet channel is provided with, the inlet channel upper end is provided with water supply valve, and the inlet channel right end is connected with Markov bottle；
The measurement container includes transparent quartz tube, and the transparent quartz tube upper end is provided with several detection jacks, institute
State detection jack and be internally provided with sealing-plug, the sealing-plug is internally provided with detection perforation, is set inside the transparent quartz tube
Permeable rock layer is equipped with, the permeable rock layer right end is provided with hydroecium, and the hydroecium right end is provided with hydroecium opening；
The soil water suction detection device includes glass tube, and the glass tube lower end is provided with pot clay end, the clay
Head upper end is provided with collecting pipe, and the collecting pipe upper end is provided with collecting pipe sealing-plug, the collecting pipe sealing-plug
For truncated cone-shaped structure, the collecting pipe upper end is provided with capillary exhaust pipe, and the capillary exhaust pipe is connected with silica gel joint, institute
State silica gel joint and be internally provided with pressure sensor, the pressure sensor is connected with constant-current source and digital voltmeter；
The TDT detection devices include TDT casings, are provided with four contact points on the TDT casings, the contact point it
Between be provided with two U-shaped probes, the contact point is connected with the contact of Network Analyzer and oscillograph, wherein upper end by conducting wire
Point connects the RF OUT interfaces of Network Analyzer and the CH1 interfaces of oscillograph respectively, and middle two contact points ground connection, lower end connects
Contact portion oscillograph CH2 interfaces；
The γ transmission beam methods detection device includes sliding panel, and the sliding panel is provided at both ends with movable pulley, the sliding panel
On be provided with radioactive source, the radioactive source upper end is arranged in parallel with ray probe, and the ray probe outside is provided with lead screen
Cover, the ray probe are connected with scaler.
As a kind of preferable technical solution of the utility model, the adjustable support frame includes support frame base, described
Support frame base is trapezium structure, and support frame as described above base upper end is provided with sleeve, piston is provided with the sleeve
Bar, the piston rod upper end are provided with fixing sleeve, and the fixing sleeve is internally provided with rubber ring, is provided with out on the rubber ring
Mouthful.
As a kind of preferable technical solution of the utility model, the permeable rock layer is provided at both ends with metal net layer, described
Metal net layer is made of stainless steel material, and mesh uses diamond-shaped meshes, the hydroecium open interior inside the metal net layer
Filtering meshes are provided with, the filtering meshes are made of PP cotton materials.
As a kind of preferable technical solution of the utility model, the U-shaped probe diameter is 2.0mm, wherein adjacent two
A U-shaped probe spacing is 10mm, and the U-shaped probe is made of waveguide stainless steel material.
As a kind of preferable technical solution of the utility model, metal foam layers are provided with the outside of the sliding panel, it is described
Tungsten resin particle is filled with inside metal foam layers.
As a kind of preferable technical solution of the utility model, there is shading at the workbench both ends by hinge connection
Plate, is provided with spacing angle bar on the shadow shield.
Compared with prior art, the beneficial effects of the utility model are：Soil to be detected is put into by measuring container
Wherein, indoor soil treatment is carried out, it is convenient and efficient, it is only necessary to after collection in worksite soil sample, it is possible to without being examined on the spot
Survey, the gradient of soil horizon can be adjusted by adjustable support frame, the soil permeability detection of different gradient is carried out, using the soil water
Suction detection device effectively have detected the suction in soil, easy to understand absorbability of the soil for moisture, and by more
One way propagation delay time of a TDT detection devices measurement electromagnetic wave signal in sensor probe, to realize in soil to be measured
Medium determination of moisture, by detecting the different soil moisture contents for infiltrating the moment with reference to moveable device with γ transmission beam methods
Distribution curve, conveniently have detected water content and infiltration rate in soil, is worthy to be popularized.
Brief description of the drawings
Fig. 1 is the utility model structure diagram；
Fig. 2 measures structure of container schematic diagram for the utility model；
Fig. 3 is the utility model soil water suction structure of the detecting device schematic diagram；
Fig. 4 is the utility model TDT structure of the detecting device schematic diagrames；
Fig. 5 is the utility model γ transmission beam method structure of the detecting device schematic diagrames；
Fig. 6 is the utility model adjustable support frame structure diagram.
In figure：1- workbenches, 2- adjustable support frames, 3- measurement containers, 4- soil water suction detection devices, 5-TDT
Detection device, 6- γ transmission beam method detection devices, 7- inlet channels, 8- water supply valves, 9- Markov bottles, 10- transparent quartz tubes, 11-
Detect jack, 12- sealing-plugs, 13- detection perforation, 14- permeable rock layers, 15- hydroeciums, 16- hydroecium openings, 17- glass tubes, 18-
Pot clay end, 19- collecting pipes, 20- collecting pipe sealing-plugs, 21- capillary exhaust pipes, 22- silica gel joints, 23- pressure sensors,
24- constant-current sources, 25- digital voltmeters, 26-TDT casings, 27- contact points, 28-U type probes, 29- conducting wires, 30- network analysis
Instrument, 31- oscillographs, 32- sliding panels, 33- movable pulleies, 34- radioactive sources, 35- rays probe, 36- lead screen covers, 37- scaler,
38- support frame bases, 39- sleeves, 40- piston rods, 41- fixing sleeves, 42- rubber rings, 43- openings, 44- metal net layers, 45- mistakes
Filter mesh layer, 46- metal foam layers, 47- tungsten resin particles, 48- hinges, 49- shadow shields, the spacing angle bar of 50-.
Embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work
All other embodiments obtained, shall fall within the protection scope of the present invention.
Embodiment：
As shown in Figures 1 to 6, the utility model provides a kind of comprehensive soil moisture detection device, including work is put down
Platform 1,1 upper end of workbench are provided with two adjustable support frames 2, are provided between described two adjustable support frames 2
Container 3 is measured, the measurement container 3 left end insertion soil water suction detection device 4,3 upper end of the measurement container is equidistantly set
Several TDT detection devices 5 are equipped with, 3 lower end of the measurement container is provided with γ transmission beam methods detection device 6, the measurement container 3
Right end is provided with inlet channel 7, and 7 upper end of inlet channel is provided with water supply valve 8, and 7 right end of inlet channel is connected with
Markov bottle 9, Markov bottle 9 are attached by the inlet channel 7 of hard, and are supported by the inlet channel 7 of hard, Markov bottle
9 weight for being significantly less weight than workbench 1, is not in the situation of overturning.
As shown in Fig. 2, container 3 is measured described in the utility model includes transparent quartz tube 10, the transparent quartz tube 10
Upper end is provided with several detection jacks 11, and the detection jack 11 is internally provided with sealing-plug 12, inside the sealing-plug 12
Detection perforation 13 is provided with, the transparent quartz tube 10 is internally provided with permeable rock layer 14, and 14 right end of permeable rock layer is set
There is hydroecium 15,15 right end of hydroecium is provided with hydroecium opening 16, and hydroecium opening 16 is connected with inlet channel 7, so by geneva
Bottle 9 links together with measurement container 3, and Markov bottle 9 injects the water of infiltration into measurement container 3.
As shown in figure 3, soil water suction detection device described in the utility model 4 includes glass tube 17, the glass tube
17 lower ends are provided with pot clay end 18, and 18 upper end of pot clay end is provided with collecting pipe 19, and 19 upper end of collecting pipe is set
There is collecting pipe sealing-plug 20, the collecting pipe sealing-plug 20 is truncated cone-shaped structure, and 19 upper end of collecting pipe is provided with
Capillary exhaust pipe 21, the capillary exhaust pipe 21 are connected with silica gel joint 22, and the silica gel joint 22 is internally provided with pressure biography
Sensor 23, the pressure sensor 23 are connected with constant-current source 24 and digital voltmeter 25.
As shown in figure 4, TDT detection devices described in the utility model 5 includes TDT casings 26, set on the TDT casings 26
Four contact points 27 are equipped with, two U-shaped probes 28, the U-shaped inside of probe 28 and contact point 27 are provided between the contact point 27
Electrical connection, is conducting state, and the contact point 27 is connected with Network Analyzer 30 and oscillograph 31 by conducting wire 29, wherein on
The contact point 27 at end connects the RF OUT interfaces of Network Analyzer 30 and the CH1 interfaces of oscillograph 31, middle two contacts respectively
The ground connection of point 27, middle two contact points 27 are grounded, by middle less U-shaped probe 28, for the U-shaped probe 28 larger with outside
Contrasted so that electromagnetic wave is formed between two U-shaped probes 28, and two U-shaped probes 28 are shown by oscillograph 31
Between waveform, to carry out the measure of parameter, the contact point 27 of lower end connects the CH2 interfaces of oscillograph 31.
As shown in figure 5, the detection devices of γ transmission beam methods described in the utility model 6 include sliding panel 32, the sliding panel 32
Movable pulley 33 is provided at both ends with, radioactive source 34 is provided with the sliding panel 32,34 upper end of radioactive source, which is arranged in parallel with, to be penetrated
Line probe 35,35 outside of ray probe are provided with lead screen cover 36, and the ray probe 35 is connected with scaler 37.
The operation principle of the utility model：Before the use, measurement by soil collection to be measured and is put into by collecting device
In container 3, the hydroecium 15 of 10 right end of transparent quartz tube is opened, one is threadedly attached between hydroecium 15 and transparent quartz tube 10
Rise, soil sample to be measured is filled up inside transparent quartz tube 10, one end pad upper dankness stone layer 14, and by hydroecium 15 and transparent stone
English pipe 10 reconnects together, and soil water suction detection device 4 and TDT detection devices 5 are inserted into by detecting jack 11, close
Blocking 12 seals up soil water suction detection device 4 and TDT detection devices 5, avoids external environment when detection from influencing inspection
Survey as a result, after the plug opening on 9 top of Markov bottle, water is injected into Markov bottle 9 by the perforation on top, opens inlet channel 7
On water supply valve, water under gravity, into inside transparent quartz tube 10, you can proceed by measurement.
Soil water suction detection device 4 is primary structure with glass tube 17 in the utility model, when the clay that lower end is set
After first 18 touch the moisture in soil, by moisture absorption so that air is inhaled in the collecting pipe 19 inside glass tube 17
Receive, cause air pressure inside to become larger, the capillary exhaust pipe 21 that collecting pipe 19 connects produces suction, suction when air pressure is reduced
So that pressure sensor 23 detects shrapnel and deforms upon, resistance is caused to change, so as to be shown on digital voltmeter 25
Different voltage values, the size of internal soil water suction can be conversed according to voltage value.
What deserves to be explained is time-domain transmission (Time domain transmisson, TDT) principle in the utility model, its
The course of work is to measure Jie of soil media by measuring propagation time of the electromagnetic wave signal in embedded soil media waveguide
Electric constant, TDT technologies are a kind of emerging electromagnetic techniques, and this method was introduced into medium determination of moisture research field, TDT in recent years
Detection device 5 installs multiple contact points 27 on casing 26, and two U-shaped probes 28 are provided with contact point 27, are considered as one
Section transmission line, what is filled around it is that dielectric constant is εrSoil media, its equivalent-circuit model be parallel double conducting wire transmission
Line, testing procedure are：
(1) by the signal output of Network Analyzer 30 terminate at TDT probe one end (TDT probe refer to two U-shaped spies
The sonde configuration that pin 28 is formed), while the CH1 signal input parts of oscillograph 31 are connected in parallel on interface, the other end of TDT probes
Connect the CH2 of oscillograph 31, the noninductive resistance of one 47 Ω of synchronous signal output terminal short circuit, the letter to come for Assimilation and conductivity
Number, reflection is to avoid, influences the signal observation of oscillograph；
(2) instrument is opened, the output signal frequency of Network Analyzer 30 is tuned into 20MHz, slowly TDT pops one's head at this time
Stretch into transparent quartz tube 10, observation waveform change, and record；
(3) signal source frequency is increased, observation waveform changes and records；
It can be gone out by the step by waveform observation in the utility model, the moisture in the soil of diverse location；
γ transmission beam methods detection device 6 coordinates movable pulley 33 to be slided on workbench 1 by sliding panel 32 in the utility model
Dynamic, movable pulley 33 is fixed setting, when measuring, transparent quartz tube 10 is arranged on radioactive source 34 and is popped one's head in ray
Between 35, radioactive source 34 is popped one's head in ray, and 35 is equal and transparent quartz tube 10 keeps certain interval, radioactive source 34 and ray probe 35
Between line be mutually perpendicular to 10 central axes of transparent quartz tube, promote sliding panel 32 so that radioactive source 34 and ray probe 35
Line pass through transparent quartz tube 10, irradiate the soil inside transparent quartz tube 10, water supply can be infiltrated to γ by Markov bottle 9
The different Soil Moisture profile θ (ti) for infiltrating moment ti are tested and screened detected by transmission beam method, are had enough to obtain
As the reliable basis of calculating parameter, the basic ideas of the method are the Soil Moisture profile of accuracy in measurement：Infiltrated in horizontal soil column
During experiment, the different soil moisture contents for infiltrating moment ti more can be accurately detected under instantaneous state using γ transmission beam methods
Distribution curve θ (ti), and after permeability intensity, and the slow process redistributed using soil moisture, in wetting front
Front end is using γ transmission beam methods and the variation relation of tensometer fixed point synchro measure soil moisture content θ and suction S, so as to fulfill one
During a horizontal soil column permeability intensity, while (hydraulic conductivity k (θ), compare the water capacity to 3 unsaturated soil hydraulic properties of measure
Measure C (θ) and diffusivity D (θ)) purpose, according to horizontal column infiltration measure diffusivity principle, can be by any screening after
Diffusivity D (ti) is calculated in Soil Moisture profile θ (ti), can also be calculated by the Soil Moisture profile after multiple screenings multiple
Diffusivity, then its average value is taken, to ensure the reliability of value, due to 3 soil water properties (hydraulic conductivity k (θ), ratio
Water capacity C (θ) and diffusivity D (θ)) obtained in same level earth pillar permeability intensity, not only substantially reduce experiment work
Amount, and it also avoid in each parameter experiment is measured respectively, because of puzzlement caused by being not quite similar of the preparation of soil sample, set lead
Shielding case 36 to preventing the influence of surrounding enviroment ray and improving measurement accuracy and interlayer resolution ratio, what ray probe 35 collected
Signal transmission is gathered to scaler 37.
As shown in fig. 6, adjustable support frame 2 described in the utility model includes support frame base 38, support frame as described above bottom
Seat 38 is trapezium structure, and 38 upper end of support frame as described above base is provided with sleeve 39, piston rod 40, institute are provided with the sleeve 39
State 40 upper end of piston rod and be provided with fixing sleeve 41, the fixing sleeve 41 is internally provided with rubber ring 42, is set on the rubber ring 42
Opening 43 is equipped with, measurement container 3 is inserted into inside fixing sleeve 41, rubber ring 42 is closely bonded with measurement container 3, and rubber ring
The opening 43 set on 42 allows rubber ring 42 to open different sizes, avoids measurement container 3 from being inserted into inconvenience, can pass through
Piston rod 40 carry out stent up and down adjustment, realize for detection container 3 the gradient adjusting, it is measurable go out different gradient for not
With the infiltration rate of soil.
As shown in Fig. 2, permeable rock layer 14 described in the utility model is provided at both ends with metal net layer 44, the metal net layer
44 are made of stainless steel material, and the 44 inside mesh of metal net layer uses diamond-shaped meshes, by metal net layer 44 for setting
Standby internal permeable rock layer 14 is fixed, and the hydroecium opening 16 is internally provided with filtering meshes 45, the filtering meshes 45
It is made of PP cotton materials, filters out the impurity into 3 internal water of detection container, avoids influencing γ transmission detection results.
What deserves to be explained is pressure sensor 23 described in the utility model uses PXM309 type pressure sensors, its work
It is resistive pressure sensor to make principle, output voltage 0-10Vdc, static accuracy 350mbar-700bar, operating temperature
For -40-85 DEG C, the pressure parameter collected is converted into voltage and is shown.
What deserves to be explained is U-shaped 28 a diameter of 2.0mm of probe described in the utility model, wherein two adjacent U-shaped spies
28 spacing of pin is 10mm, and the U-shaped probe 28 is made of waveguide stainless steel material, and the Network Analyzer 30 uses
NA7300A type Network Analyzers, frequency range 0.3-3000MHz, frequency stability are≤± 5 × 10- 6, frequency resolution
For 1Hz, as adjustable signal source, the oscillograph 31 is using the DS1302CA type oscillographs of Beijing Pu Yuan productions, and measurement is most
Big frequency is 300MHz, and sample rate scope is 1Sa/s-2GSa/s, obtains the waveform of the electromagnetic wave signal of the U-shaped probe 28 in both ends.
What deserves to be explained is radioactive source 34 described in the utility model is using iron 55, cobalt 57, Co 60, selenium 75, Ce 137, thulium
170th, Ir192, plutonium 238 and one kind of americium 241 are made, and 36 thickness of lead screen cover is 4-10mm, collimating aperture 10mm, is surveyed
Accuracy of measurement is not less than 3%, and interlayer resolution ratio is 22mm.
What deserves to be explained is the probe of ray described in the utility model 35 measures model using REN-GM-L types ray probe
It is 48keV-1.5MeV≤± 30%, communication standard RS485/RS232 to enclose for 0.01 μ Sv/h-2500 μ Sv/h, energy response
With MODBUS communication protocols, operating temperature is -10 DEG C -+50 DEG C.
What deserves to be explained is scaler 37 described in the utility model uses FH463B type scaler, threshold value adjustable extent
Continuously adjustable for 0.1V-5V, deviation from linearity≤± 0.5%, road width adjustable extent is 0.1-3V, and input pulse width is 0.1 μ s-
100 μ s, High voltage output scope are continuously adjustable for 0V ± 50V.
As shown in figure 5, it is provided with metal foam layers 46, the metal foam on the outside of sliding panel 32 described in the utility model
The inside of layer 46 is filled with tungsten resin particle 47, and gamma-ray radiation can be effectively shielded using tungsten resin particle 47.
As shown in Figure 1, the both ends of workbench 1 described in the utility model are connected with shadow shield 49 by hinge 48, it is described
Spacing angle bar 50 is provided with shadow shield 49.
Soil to be detected is put into wherein by the utility model by measuring container, carries out indoor soil treatment, convenient fast
It is prompt, it is only necessary to after collection in worksite soil sample, it is possible to without being detected on the spot, soil can be adjusted by adjustable support frame
The gradient of earth layer, carries out the soil permeability detection of different gradient, soil is effectively have detected using soil water suction detection device
Interior suction, easy to understand absorbability of the soil for moisture, and measures electromagnetic wave signal by multiple TDT detection devices and exists
The one way propagation delay time in sensor probe, to realize the medium determination of moisture in soil to be measured, by being transmitted with γ
Method detects the different soil moisture content distribution curves for infiltrating the moment with reference to moveable device, conveniently have detected soil
Interior water content and infiltration rate, is worthy to be popularized.
It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned one exemplary embodiment, and
And in the case of the spirit or essential attributes without departing substantially from the utility model, it can realize that this practicality is new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this practicality is new
The scope of type is indicated by the appended claims rather than the foregoing description, it is intended that the equivalency fallen in claim is contained
All changes in justice and scope are embraced therein.Any reference numeral in claim should not be considered as limitation
Involved claim.
Claims (6)
1. a kind of comprehensive soil moisture detection device, including workbench (1), workbench (1) upper end is provided with two
A adjustable support frame (2), it is characterised in that：Adjustable support frame (2) upper end is provided with measurement container (3), the survey
Container (3) left end insertion soil water suction detection device (4) is measured, measurement container (3) upper end spaced set there are several
TDT detection devices (5), described measurement container (3) lower end are provided with γ transmission beam methods detection device (6), and the measurement container (3) is right
End is provided with inlet channel (7), and inlet channel (7) upper end is provided with water supply valve (8), inlet channel (7) right end
It is connected with Markov bottle (9)；The TDT detection devices (5) include TDT casings (26), and four are provided with the TDT casings (26)
Contact point (27), is provided with two U-shaped probes (28) between the contact point (27), the contact point (27) passes through conducting wire (29)
Network Analyzer (30) and oscillograph (31) are connected with, the wherein contact point (27) of upper end connects Network Analyzer (30) respectively
The CH1 interfaces of RF OUT interfaces and oscillograph (31), middle two contact points (27) ground connection, contact point (27) connection of lower end are shown
Ripple device (31) CH2 interfaces.
A kind of 2. comprehensive soil moisture detection device according to claim 1, it is characterised in that：The U-shaped probe
(28) a diameter of 2.0mm, wherein two adjacent U-shaped probe (28) spacing are 10mm, the U-shaped probe (28) uses waveguide not
Rust Steel material is made.
A kind of 3. comprehensive soil moisture detection device according to claim 1, it is characterised in that：The workbench
(1) both ends are connected with shadow shield (49) by hinge (48), and spacing angle bar (50) is provided with the shadow shield (49).
A kind of 4. comprehensive soil moisture detection device according to claim 1, it is characterised in that：The adjustable support
Frame (2) includes support frame base (38), and support frame as described above base (38) is trapezium structure, and support frame as described above base (38) upper end is set
Sleeve (39) is equipped with, piston rod (40) is provided with the sleeve (39), piston rod (40) upper end is provided with solid
Fixed set (41), the fixing sleeve (41) are internally provided with rubber ring (42), opening (43) are provided with the rubber ring (42).
A kind of 5. comprehensive soil moisture detection device according to claim 1, it is characterised in that：The Network Analyzer
(30) model NA7300A, its frequency range are 0.3-3000MHz.
A kind of 6. comprehensive soil moisture detection device according to claim 1, it is characterised in that：The oscillograph (31)
Model DS1302CA, its maximum measurement frequency is 300MHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201720512734.7U CN207231966U (en) | 2017-05-10 | 2017-05-10 | A kind of comprehensive soil moisture detection device |
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| CN201720512734.7U CN207231966U (en) | 2017-05-10 | 2017-05-10 | A kind of comprehensive soil moisture detection device |
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| CN207231966U true CN207231966U (en) | 2018-04-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108931266A (en) * | 2018-04-26 | 2018-12-04 | 安徽科杰粮保仓储设备有限公司 | A kind of granary temperature water content detection integrated cable |
-
2017
- 2017-05-10 CN CN201720512734.7U patent/CN207231966U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108931266A (en) * | 2018-04-26 | 2018-12-04 | 安徽科杰粮保仓储设备有限公司 | A kind of granary temperature water content detection integrated cable |
| CN108931266B (en) * | 2018-04-26 | 2021-01-12 | 安徽科杰粮保仓储设备有限公司 | Grain depot temperature moisture detects integrated cable |
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