CN107796854A - A kind of forest soil parameter measuring apparatus and method - Google Patents
A kind of forest soil parameter measuring apparatus and method Download PDFInfo
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- CN107796854A CN107796854A CN201710791827.2A CN201710791827A CN107796854A CN 107796854 A CN107796854 A CN 107796854A CN 201710791827 A CN201710791827 A CN 201710791827A CN 107796854 A CN107796854 A CN 107796854A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/041—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body
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Abstract
The present invention, which provides a kind of forest soil parameter measuring apparatus and method, device, includes soil moisture detection module, soil conductivity detection module, soil moisture detection module, power supply, energy supply control module, clock module and processor；Soil moisture detection module and soil conductivity detection module include same probe, and soil moisture detection module and probe are arranged on a fixing body；Clock module is connected with processor, and clock signal is provided to processor；Processor connects with energy supply control module, according to clock signal to energy supply control module output control signal；Power supply connects with above three detection module respectively, and energy supply control module connects with power supply, is exported power supply to soil moisture detection module and soil moisture detection module according to control signal, or export to soil conductivity detection module and soil moisture detection module.Probe time-sharing multiplex of the present invention, influencing each other between each functional module during measurement can be effectively avoided, so as to improve accuracy of detection.
Description
Technical field
The present invention relates to field of measuring technique, more particularly, to a kind of forest soil parameter measuring apparatus and method.
Background technology
Soil is forest ecosystem important component, and the Impacts on ecology and environment huge to forest has positive effect,
It is the important foundation for carrying out fine agriculture and forestry practice.Soil moisture, temperature and electrical conductivity are the important parameters of soil, in crop
Played an important role in growth course.
Forest soil moisture regime be forest plants nutrient operation carrier and solvent, aeration conditioning agent and soil in have
The diluent of noxious material, and the supply source of soil runoff.Physical Characteristics of Soil Moisture is often by as the important of evaluation soil quality
Index, soil reclaimed water, air and heat and biological condition are not only determined, and influence the validity of plant nutrient and confession in soil
Should be able to power.
Forest soil not only saves moisture and also has the effect of moisture self-restraint, and crucial work is played in its protection for acting on to forest fire
With.The aqueous performance of forest soil depends on litter thickness and degree of decomposition and thickness of soil and the content of organic matter.
The temperature of soil refers to the temperature in the following soil of earth's surface, generally refers to the earth's surface related to growth and development of plants
The temperature of shallow-layer.The soil moisture affects the chemical reaction of microorganism, so influence plant grow and yield.Typically I
Described electrical conductivity refer to the electrical conductivity of soil mass, soil conductivity is by soil physical chemistry characteristic combined influence, bag
Include soluble-salt, clay content, mineral matter, soil moisture content, unit weight, organic matter and temperature.
At present, there are a variety of soil moistures, temperature, the measuring method of electrical conductivity and device both at home and abroad.Soil moisture content measures
Method is broadly divided into two classes, and one kind is traditional measurement method, such as oven drying method and calcium carbide route；Another kind of is modern surveying side
Method, such as tensometer method, Near-Infrared Absorption Method, time domain reflectometry, frequency domain bounce technique, capacitance method, Neutron Scattering Method and heat flow method.
Thermometer can directly be inserted into soil and obtain temperature or using temperature-sensing element (device) (such as platinum electricity by the measurement soil moisture
Resistance, thermistor, thermocouple, digital temperature sensor) measurement.Agriculture and forestry one share two major class methods and are used for measuring soil
Electrical conductivity, one kind are chemical methods, and Typical Representative is soil extraction method；Another kind of is the electrical characteristic measurement electricity using soil
Conductance, including electromagnetic induction method, time domain reflectometry, electric-resistivity method etc..Have been developed that more money soil water both at home and abroad based on above-mentioned theory
Divide, the soil moisture, soil conductivity sensor, can measure in laboratory or be measured applied to farmland forest land.Soil
Larger coupled relation between earth moisture, temperature, electrical conductivity be present, in order to more comprehensively understand soil information, obtain simultaneously
Above-mentioned three parameter is significant.Although can be measured at present using multiple different sensors to obtain three parameters, by
Heterogeneous, i.e., the same soil types in soil Existential Space, the soil property on different time, different spaces are different.
First, it is difficult to ensure that when being measured using multiple sensors when different sensors measure same soil and is in same sky
Between, but soil property determines soil Existential Space abnormity, the difference of different spaces soil in itself will cause multiple sensors to be surveyed
The drawbacks of error is big, precision is low is measured, in addition, moisture content, temperature and the electrical conductivity of multiple sensors measurement soil easily cause
Interfere, precision is difficult to ensure that, such as：The hole left after the measurement of previous sensor can be to next sensor measurement production
Raw interference, finally, non-integral multiple sensors are all inconvenient in carrying and operation, and cost is also higher.
The content of the invention
The present invention provides a kind of forest soil parameter for overcoming above mentioned problem or solving the above problems at least in part and surveyed
Measure device and method.
In a first aspect, the present invention provides a kind of forest soil parameter measuring apparatus, including：Soil moisture detection module, soil
Earth electrical conductivity detection module, soil moisture detection module, power supply, energy supply control module, clock module and processor；
The soil moisture detection module includes probe, and the soil conductivity detection module includes the probe, described
Soil moisture detection module and the probe are arranged on a fixing body；
The clock module connects with the processor, for providing clock signal to the processor；
The processor connects with the energy supply control module, for according to the clock signal to the power supply mould
Block output control signal；
The power supply detects mould with the soil moisture detection module, soil conductivity detection module, the soil moisture respectively
Block connects, and the energy supply control module connects with the power supply, for being exported power supply to the soil according to the control signal
Earth water content detection module and soil moisture detection module, or export to the soil conductivity detection module and soil moisture detection
Module.
Preferably, the fixing body includes hollow pipe, three pvc pipes and conical nose；The probe is dicyclic probe
Probe, the dicyclic probe include two becket probes, the hollow pipe, a pvc pipe, a gold
Belong to ring probe, second pvc pipe, another described becket probe, the 3rd pvc pipe and the conical nose according to
Secondary connection, the soil moisture detection module are embedded in the conical inner side.
Preferably, the soil moisture detection module also includes：Signal source, transmission line and detection measuring circuit；
The signal source connects the probe by the transmission line, and 2 points of connection detections on the transmission line are surveyed
Measure circuit；
The signal source, for providing incoming signal for the probe；
The probe, for being reflected back portions incident signal when receiving the incoming signal so that reflected signal and
The incoming signal is superimposed on the transmission line and forms standing wave；The reflected signal is the incoming signal being reflected back；
The detection measuring circuit, 2 points on the transmission line of standing wave of voltage is formed for detecting.
Preferably, the detection measuring circuit connects the processor；
The detection measuring circuit, it is additionally operable to transmit described 2 points of voltage to the processor；
The processor, soil moisture content is calculated for the voltage according to described 2 points.
Preferably, the soil conductivity detection module also includes chip, and two pins of the chip connect the spy
Head；
The chip, for producing and exporting the pumping signal of default tranmitting frequency, and by the pumping signal transmit to
The probe, receives the pumping signal that is reflected back of popping one's head in, and according to the pumping signal being reflected back obtain with it is described pre-
If resistance value corresponding to tranmitting frequency and reactance value.
The probe, for receiving and being reflected back pumping signal.
Preferably, the chip connects the processor；
The chip, it is additionally operable to transmit the resistance value and reactance value to the processor；
The processor, for calculating soil conductivity according to the resistance value and reactance value.
Preferably, the soil moisture detection module connects the processor；
The soil moisture detection module, transmitted for detecting the soil moisture, and by the soil moisture to the processing
Device；
The processor, for being repaiied according to the soil moisture to the soil moisture content and the soil conductivity
Just.
Preferably, the soil moisture detection module is the digital temperature sensor of DS18B20 models.
Second aspect, the present invention also provide a kind of forest soil parameter based on described forest soil parameter measuring apparatus
Measuring method, including：
The clock module provides clock signal to the processor；
The processor is according to the clock signal to the energy supply control module output control signal；
The energy supply control module exports power supply to the soil moisture detection module and soil according to the control signal
Earth temperature detecting module, or export to the soil conductivity detection module and soil moisture detection module.
Preferably, methods described also includes：
Signal source provides incoming signal for the probe；
The probe is reflected back portions incident signal when receiving the incoming signal so that reflected signal and it is described enter
Penetrate signal and be superimposed on the transmission line and form standing wave；The reflected signal is the incoming signal being reflected back；
Detection measuring circuit detects 2 points on the transmission line for be formed standing wave of voltage, and described 2 points of voltage is transmitted to institute
State processor；
The processor calculates soil moisture content according to described 2 points of voltage.
As shown from the above technical solution, the probe of soil moisture detection module of the invention and soil conductivity detection module
It is multiplexed (shared), energy supply control module controls timesharing to be powered for soil moisture detection module and soil conductivity detection module, real
Existing soil moisture detection module and soil conductivity detection module timesharing measurement, soil moisture detection module measure in real time, and then
I.e. measurable three soil parameters of this forest soil parameters measurement apparatus can be disposably inserted, when avoiding repeatedly insertion sensor
Caused by sensor measurement point dystopy or soil space abnormity multisensor measurement when it is existing influence each other, precision is low and
The big problem of error, and forest soil parameter measuring apparatus volume is small compared with using multiple sensor bulks, is easy to carry, cost is low.
Brief description of the drawings
Fig. 1 is the theory diagram of the forest soil parameter measuring apparatus of one embodiment of the invention；
Fig. 2 is the theory diagram of the soil moisture detection module of one embodiment of the invention；
Fig. 3 is the theory diagram of the soil conductivity detection module of one embodiment of the invention；
Fig. 4 is the theory diagram of the soil moisture detection module of one embodiment of the invention；
Fig. 5 is the theory diagram of the forest soil parameter measuring apparatus of another embodiment of the present invention；
Fig. 6 is the structure chart of the fixing body of one embodiment of the invention；
Fig. 7 is the flow chart of the forest soil measurement method of parameters of one embodiment of the invention.
Embodiment
With reference to the accompanying drawings and examples, the embodiment of the present invention is described in further detail.Implement below
Example is used to illustrate the present invention, but is not limited to the scope of the present invention.
Fig. 1 is the theory diagram of the forest soil parameter measuring apparatus of one embodiment of the invention.
A kind of forest soil parameter measuring apparatus as shown in Figure 1, including：Soil moisture detection module 11, soil conductivity
Rate detection module 12, soil moisture detection module 13, power supply 14, energy supply control module 15, clock module 16 and processor 17；
The soil moisture detection module 11 includes probe 115, and the soil conductivity detection module includes the probe
115, the soil moisture detection module 13 and the probe 115 are arranged on a fixing body；
The clock module 16 and the processor 17 connect, for providing clock signal to the processor 17；
The processor 17 and the energy supply control module 15 connect, for according to the clock signal to the power supply control
The output control signal of molding block 15；
The power supply 14 respectively with the soil moisture detection module 11, soil conductivity detection module 12, the soil moisture
Detection module 13 connects, and the energy supply control module 15 and the power supply 14 connect, for according to the control signal by power supply
14 export to the soil moisture detection module 11 and soil moisture detection module 13, or export and detected to the soil conductivity
Module 12 and soil moisture detection module 13, to realize time sharing power supply.
It can be seen that the probe multiplexing (shared) of soil moisture detection module and soil conductivity detection module of the invention, electricity
Source control module controls timesharing to be powered for soil moisture detection module and soil conductivity detection module, realizes soil moisture detection
Module and soil conductivity detection module timesharing measurement, soil moisture detection module measure in real time, and then can disposably insert this
Forest soil parameter measuring apparatus is measurable three soil parameters, and sensor measurement point is different when avoiding repeatedly insertion sensor
Position or soil space abnormity caused by multisensor measurement when it is existing influence each other, precision is low and the big problem of error, and
Forest soil parameter measuring apparatus volume compared with using multiple sensor bulks it is small, be easy to carry, cost it is low.The present invention can obtain more
Add accurate effective moisture content, temperature, conductivity data, and then grinding for agricultural production, stand tending and ECOLOGICAL ENVIRONMENTAL MONITORING
Study carefully and lay the foundation.
Referring to Fig. 6, for the ease of inserting this forest soil parameters measurement apparatus into soil, it is preferable to carry out as one kind
Example, the fixing body include hollow 61, three pvc pipes and conical noses 63；The probe 115 is dicyclic probe, institute
Stating dicyclic probe includes two becket probes 62, described 61, pvc pipes of hollow pipe, a metal
62, second pvc pipes of ring probe, another described becket probe 62, the 3rd pvc pipe and the conical nose
63 are sequentially connected, and the soil moisture detection module 13 is embedded in the conical inner side.The hollow pipe can be metal hollow pipe, on
State and be threadedly coupled between Each part, convenient dismounting, metal hollow pipe outer sheath insulated nylon pipe, insulated nylon pipe outer sheath
Pvc pipe and the becket probe.
As shown in Fig. 2 as a kind of preferred embodiment, the soil moisture detection module 11 also includes：Signal source 111,
Transmission line 112 and detection measuring circuit；
The signal source 111 connects the probe 115 by the transmission line 112,2 points of companies on the transmission line 112
Connect the detection measuring circuit；
The signal source 111, for providing incoming signal for the probe；
The probe 115, for being reflected back portions incident signal when receiving the incoming signal, so that reflected signal
It is superimposed with the incoming signal on the transmission line 112 and forms standing wave；The reflected signal is the incoming signal being reflected back；
The detection measuring circuit, 2 points on the transmission line 112 of standing wave of voltage is formed for detecting.
In practice, the both ends of described 2 points desirable transmission lines 112, that is, the voltage at both ends is obtained.
In the specific embodiment shown in Fig. 2, it may include the first detection measuring circuit 113 and the second detection measuring circuit
114, measurement respectively forms the voltage of A points and B points on the transmission line of standing wave.In the specific embodiment shown in Fig. 2, in addition to it is poor
Divide amplifying circuit 116, the output of the first detection measuring circuit 113 and the second detection measuring circuit 114 connects the differential amplification
Circuit 116；
The first detection measuring circuit 113, for the voltage of the A points to be transmitted to the differential amplifier circuit 116；
The second detection measuring circuit 114, for the voltage of the B points to be transmitted to the differential amplifier circuit 116；
The differential amplifier circuit 116, for the voltage according to 2 points of A, B, described 2 points of voltages are carried out to ask poor, so
Output is amplified to difference afterwards.
, can be using 100MHz crystal oscillators as signal source 111 in a kind of specific embodiment, the transmission line 112 passes to be coaxial
Defeated line.
What deserves to be explained is the transmission line 112 may be provided in the hollow pipe 61 of the fixing body, to pass through hollow pipe
Protect the transmission line.
As a kind of preferred embodiment, the detection measuring circuit connects the processor 17；
The detection measuring circuit, it is additionally operable to transmit described 2 points of voltage to the processor 17；
The processor 17, soil moisture content is calculated for the voltage according to described 2 points.
For the embodiment with differential amplifier circuit 116, the output connection of the differential amplifier circuit 116 can also be
The processor 17；
The differential amplifier circuit 116, it is additionally operable to that the voltage difference obtained after difference will be asked to transmit to the processor 17；
The processor 17, for calculating soil moisture content according to the voltage difference.
As shown in figure 3, as a kind of preferred embodiment, the soil conductivity detection module 12 also includes chip, described
Two pins of chip connect the probe；
The chip, for producing and exporting the pumping signal of default tranmitting frequency, and by the pumping signal transmit to
The probe, receives the pumping signal that is reflected back of popping one's head in, and according to the pumping signal being reflected back obtain with it is described pre-
If resistance value corresponding to tranmitting frequency and reactance value.
The probe, for receiving and being reflected back pumping signal.
In the specific embodiment shown in Fig. 3, the chip can use AD5933 chips 121.AD5933 chips include two
Individual operational amplifier, GAIN, LPF, ADC, IIC interface, 1024 point DFT, oscillator, DDS, DAC, adjustable resistance, RBF etc..Base
Sine wave is provided to encourage external impedance in the DDS of a highest output frequency 100KHz on " AD5933 " chip, is encouraged
Current signal (pumping signal) is sampled after being transformed to voltage signal by the ADC of AD5933 chips, and sampled result passes through AD5933 cores
The DSP of piece carries out discrete Fourier transformation.Return after Fourier transformation and obtained under this output frequency (default tranmitting frequency)
The real part data and imaginary data arrived, the mould of the Fourier transformation under default tranmitting frequency can be calculated by following formula
And phase angle, measurement result are proportional to the admittance of measurand.
Phase=tan-1(I/R)
Y represents admittance, and A represents amplitude, and Z represents impedance
Gain coefficient is constant, calculates impedance value by admittance, resistivity can be by known conductivity soil-like
The measure of product establishes the mathematical modeling of impedance value and conductivity relation, and then goes out soil conductivity by mathematical modeling Inversion Calculation
Rate.ZL in Fig. 3 represents the impedance value of soil.
Obtained based on " AD5933 " and characterize Soil impedance, and then by establishing the mathematics of impedance value and conductivity relation
Model can effectively avoid polarization phenomena when calculating soil conductivity, prevent probe from getting rusty rotten, further extend this soil
The usage time of parameter measuring apparatus.
The chip 121 can also connect probe with impedance matching circuit by DC filtering circuit, will not be described in detail herein.
As a kind of preferred embodiment, the chip connects the processor 17；
The chip, it is additionally operable to transmit the resistance value and reactance value to the processor 17；
The processor 17, for calculating soil conductivity according to the resistance value and reactance value.
As shown in figure 4, as a kind of preferred embodiment, the soil moisture detection module 13 connects the processor 17；
The soil moisture detection module 13, transmitted for detecting the soil moisture, and by the soil moisture to the place
Manage device 17；
The processor 17, for being carried out according to the soil moisture to the soil moisture content and the soil conductivity
Amendment.
In the specific embodiment shown in Fig. 4, the soil moisture detection module 13 is the digital temperature of DS18B20 models
Sensor 131.DS18B20 internal structures mainly include 4 parts：64 lasered ROMs, temperature sensor, non-volatile temperature report
Alert trigger TH and TL, configuration register.Whole sensing elements and change-over circuit are integrated in an integrated electricity shaped like triode
In road.In temperature measurement system, using the new digital temperature sensor DS18B20 small volumes of strong antijamming capability, precision more
It is high, be applicable voltage it is wider, using one-wire bus, can networking the advantages that.
As shown in figure 5, as a kind of preferred embodiment, 232 communication modules 55, GPRS data transport module may also include
54th, EEPROM memory modules 52 and SD memory modules 53, the clock module 16 can use RX8025 clock modules 51, the place
Reason device 17 can use STM32F103RBT6 processors 17,232 communication module 55, GPRS data transport module 54, EEPROM
Memory module 52 and SD memory modules 53 connect with the processor 17.
EEPROM memory modules 52 store the impedance operator matching attribute and its KB values and electricity in soil conductivity model
KB values in pressure difference-soil moisture content model；
SD memory modules 53 store soil moisture content, soil conductivity and the soil moisture.
Soil moisture content, soil conductivity and the soil moisture that 232 communication modules 55 obtain processor 17 are by serial ports
Signal-obtaining is with sending, with realization and external communication.
The GPRS data transport module 54 is by soil moisture content, soil conductivity and the soil moisture and current time
Transmission returns to host computer 56 and has preserved simultaneously analyze data.
The present invention can be used for the parameter of measurement Litter Layer and mineral soil layer.
Fig. 7 is the flow chart of the forest soil measurement method of parameters of one embodiment of the invention.
A kind of forest soil measurement method of parameters based on described forest soil parameter measuring apparatus as shown in Figure 7,
Including：
S71, the clock module provide clock signal to the processor；
S72, the processor are according to the clock signal to the energy supply control module output control signal；
S73, the energy supply control module export power supply to the soil moisture detection module according to the control signal
With soil moisture detection module, or export to the soil conductivity detection module and soil moisture detection module.
The present invention is by controlling energy supply control module to control timesharing to be detected for soil moisture detection module and soil conductivity
Module for power supply, realize soil moisture detection module and soil conductivity detection module timesharing measurement, soil moisture detection module reality
When measure, and then can disposably insert i.e. measurable three soil parameters of this forest soil parameters measurement apparatus, avoid repeatedly
Insert sensor when sensor measurement point dystopy or soil space abnormity caused by multisensor measurement when existing mutual shadow
Ring, precision is low and the big problem of error, and forest soil parameter measuring apparatus volume compared with using multiple sensor bulks it is small, be easy to
Carrying, cost are low.The present invention can obtain more accurate effective moisture content, temperature, conductivity data, so for agricultural production,
Stand tending and the research of ECOLOGICAL ENVIRONMENTAL MONITORING lay the foundation.
As a kind of preferred embodiment, methods described also includes：
Signal source provides incoming signal for the probe；
The probe is reflected back portions incident signal when receiving the incoming signal so that reflected signal and it is described enter
Penetrate signal and be superimposed on the transmission line and form standing wave；The reflected signal is the incoming signal being reflected back；
Detection measuring circuit detects 2 points on the transmission line for be formed standing wave of voltage, and described 2 points of voltage is transmitted to institute
State processor；
The processor calculates soil moisture content according to described 2 points of voltage.
It is the detection of soil moisture content to be measured using 100MHz crystal oscillators as exciting signal source in a kind of specific embodiment
Energy is provided；Sinusoidal signal caused by crystal oscillator is transferred to probe along coaxial transmission line, if probe impedance hinders with transmission line
Anti- difference, a part of incoming signal are reflected back toward signal source.The signal being reflected back is superimposed with incoming signal, in transmission line
It is upper to form standing wave and voltage magnitude change be produced；Detection measuring circuit detection transmission line both end voltage (is taken two on transmission line
The voltage at end) it is conveyed to differential amplifier circuit or is delivered directly to processor；Differential amplifier circuit enters to transmission line both end voltage
Row asks poor, and output is then amplified to difference.
As a kind of preferred embodiment, the processor calculates soil moisture content according to described 2 points of voltage, including：
The processor calculates voltage difference according to described 2 points of voltage；
According to the voltage difference, soil moisture content is calculated by voltage difference-soil moisture content model.
As a kind of preferred embodiment, methods described also includes：
Chip is produced and exports the pumping signal of default tranmitting frequency, and the pumping signal is transmitted to the probe,
The pumping signal popped one's head in and be reflected back is received, and is obtained and the default tranmitting frequency according to the pumping signal being reflected back
Corresponding resistance value and reactance value, and the resistance value and reactance value are transmitted to the processor；
The probe is reflected back pumping signal；
The processor calculates soil conductivity according to the resistance value and reactance value.
It should be noted that in all parts of the device of the present invention, according to the function that it to be realized to therein
Part has carried out logical partitioning, and still, the present invention is not only restricted to this, all parts can be repartitioned as needed or
Person combines, for example, can be single part by some component combinations, or can be further broken into some parts more
Subassembly.It should be noted that the present invention will be described rather than limits the invention for above-described embodiment, and ability
Field technique personnel can design alternative embodiment without departing from the scope of the appended claims.Word " comprising " is not arranged
Except element or step not listed in the claims being present.The present invention can by means of include the hardware of some different elements with
And realized by means of properly programmed computer.In if the unit claim of equipment for drying is listed, in these devices
Several can be embodied by same hardware branch.
Embodiment of above is only of the invention suitable for explanation, and not limitation of the present invention, about the common of technical field
Technical staff, without departing from the spirit and scope of the present invention, it can also make a variety of changes and modification, thus it is all
Equivalent technical scheme falls within scope of the invention, and scope of patent protection of the invention should be defined by the claims.
Claims (10)
- A kind of 1. forest soil parameter measuring apparatus, it is characterised in that including：Soil moisture detection module, soil conductivity inspection Survey module, soil moisture detection module, power supply, energy supply control module, clock module and processor；The soil moisture detection module includes probe, and the soil conductivity detection module includes the probe, the soil Temperature detecting module and the probe are arranged on a fixing body；The clock module connects with the processor, for providing clock signal to the processor；The processor connects with the energy supply control module, for defeated to the energy supply control module according to the clock signal Go out control signal；The power supply connects with the soil moisture detection module, soil conductivity detection module, soil moisture detection module respectively Connect, the energy supply control module connects with the power supply, for being exported power supply to the soil water according to the control signal Divide detection module and soil moisture detection module, or export to the soil conductivity detection module and soil moisture detection mould Block.
- 2. device according to claim 1, it is characterised in that the fixing body includes hollow pipe, three pvc pipes and taper Head；The probe is dicyclic probe, and the dicyclic probe includes two becket probes, described hollow Pipe, a pvc pipe, a becket probe, second pvc pipe, another becket probe, 3rd The individual pvc pipe and the conical nose are sequentially connected, and the soil moisture detection module is on the inside of the conical nose.
- 3. device according to claim 1, it is characterised in that the soil moisture detection module also includes：Signal source, biography Defeated line and detection measuring circuit；The signal source connects the probe by the transmission line, 2 points of connections detections measurement electricity on the transmission line Road；The signal source, for providing incoming signal for the probe；The probe, for being reflected back portions incident signal when receiving the incoming signal, so that reflected signal and described Incoming signal is superimposed on the transmission line and forms standing wave；The reflected signal is the incoming signal being reflected back；The detection measuring circuit, 2 points on the transmission line of standing wave of voltage is formed for detecting.
- 4. device according to claim 3, it is characterised in that the detection measuring circuit connects the processor；The detection measuring circuit, it is additionally operable to transmit described 2 points of voltage to the processor；The processor, soil moisture content is calculated for the voltage according to described 2 points.
- 5. device according to claim 4, it is characterised in that the soil conductivity detection module also includes chip, institute Two pins for stating chip connect the probe；The chip, transmitted for producing and exporting the pumping signal of default tranmitting frequency, and by the pumping signal to described Probe, the pumping signal popped one's head in and be reflected back is received, and obtained and the default hair according to the pumping signal being reflected back Resistance value and reactance value corresponding to radio frequency rateThe probe, for receiving and being reflected back pumping signal.
- 6. device according to claim 5, it is characterised in that the chip connects the processor；The chip, it is additionally operable to transmit the resistance value and reactance value to the processor；The processor, for calculating soil conductivity according to the resistance value and reactance value.
- 7. device according to claim 6, it is characterised in that the soil moisture detection module connects the processor；The soil moisture detection module, transmitted for detecting the soil moisture, and by the soil moisture to the processor；The processor, for being modified according to the soil moisture to the soil moisture content and the soil conductivity.
- 8. the device according to claim 1 or 7, it is characterised in that the soil moisture detection module is DS18B20 models Digital temperature sensor.
- 9. a kind of forest soil parameter of forest soil parameter measuring apparatus based on any one of claim 1 and 4 is surveyed Amount method, it is characterised in that including：The clock module provides clock signal to the processor；The processor is according to the clock signal to the energy supply control module output control signal；The energy supply control module exports power supply to the soil moisture detection module and soil temperature according to the control signal Detection module is spent, or is exported to the soil conductivity detection module and soil moisture detection module.
- 10. according to the method for claim 9, it is characterised in that methods described also includes：Signal source provides incoming signal for the probe；The probe is reflected back portions incident signal when receiving the incoming signal, so that reflected signal and the incident letter Superposition forms standing wave number on the transmission line；The reflected signal is the incoming signal being reflected back；Detection measuring circuit detects 2 points on the transmission line for be formed standing wave of voltage, and described 2 points of voltage is transmitted to the place Manage device；The processor calculates soil moisture content according to described 2 points of voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710791827.2A CN107796854A (en) | 2017-09-05 | 2017-09-05 | A kind of forest soil parameter measuring apparatus and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710791827.2A CN107796854A (en) | 2017-09-05 | 2017-09-05 | A kind of forest soil parameter measuring apparatus and method |
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| CN107796854A true CN107796854A (en) | 2018-03-13 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109253949A (en) * | 2018-11-14 | 2019-01-22 | 北京林业大学 | Soil vertical sectional parameter measuring device and CO2Flux computing system |
| CN110596341A (en) * | 2019-06-28 | 2019-12-20 | 南京天补智联信息科技有限公司 | Integrated soil and surrounding environment detection system |
| CN111537567A (en) * | 2020-04-30 | 2020-08-14 | 中国农业科学院草原研究所 | Needle type soil moisture content detection method |
| CN111982969A (en) * | 2020-07-02 | 2020-11-24 | 中国科学院地理科学与资源研究所 | Method and equipment for measuring water content of layered soil |
| WO2022039007A1 (en) * | 2020-08-18 | 2022-02-24 | 国立大学法人香川大学 | Plant water content sensor and plant water content measurement method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936935A (en) * | 2010-06-29 | 2011-01-05 | 中国农业大学 | Device for measuring multiple parameters of soil |
-
2017
- 2017-09-05 CN CN201710791827.2A patent/CN107796854A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936935A (en) * | 2010-06-29 | 2011-01-05 | 中国农业大学 | Device for measuring multiple parameters of soil |
Non-Patent Citations (2)
| Title |
|---|
| 傅元 等: "《AD5933 测量水电导率电路设计中的若干问题》", 《仪表技术与传感器》 * |
| 赵燕东 等: "《土壤多参数复合测试系统研究》", 《农业机械学报》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109253949A (en) * | 2018-11-14 | 2019-01-22 | 北京林业大学 | Soil vertical sectional parameter measuring device and CO2Flux computing system |
| CN110596341A (en) * | 2019-06-28 | 2019-12-20 | 南京天补智联信息科技有限公司 | Integrated soil and surrounding environment detection system |
| CN111537567A (en) * | 2020-04-30 | 2020-08-14 | 中国农业科学院草原研究所 | Needle type soil moisture content detection method |
| CN111537567B (en) * | 2020-04-30 | 2023-09-08 | 中国农业科学院草原研究所 | Tubular needle type soil moisture content detection method |
| CN111982969A (en) * | 2020-07-02 | 2020-11-24 | 中国科学院地理科学与资源研究所 | Method and equipment for measuring water content of layered soil |
| CN111982969B (en) * | 2020-07-02 | 2022-02-18 | 中国科学院地理科学与资源研究所 | Method and equipment for measuring water content of layered soil |
| WO2022039007A1 (en) * | 2020-08-18 | 2022-02-24 | 国立大学法人香川大学 | Plant water content sensor and plant water content measurement method |
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