CN206573161U - A kind of soil moisture, moisture and conductivity measuring apparatus - Google Patents
A kind of soil moisture, moisture and conductivity measuring apparatus Download PDFInfo
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- CN206573161U CN206573161U CN201720211883.XU CN201720211883U CN206573161U CN 206573161 U CN206573161 U CN 206573161U CN 201720211883 U CN201720211883 U CN 201720211883U CN 206573161 U CN206573161 U CN 206573161U
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Abstract
The utility model discloses the soil moisture, moisture and conductivity measuring apparatus, mainly including sensor unit, data acquisition and processing (DAP) unit and MCU；Sensor unit mainly includes soil temperature sensor, soil moisture sensor and soil conductivity sensor；Data acquisition and processing (DAP) unit mainly includes voltage conversion circuit, signal generating circuit, signal processing circuit, analog to digital conversion circuit, 485 telecommunication circuits；The device is to integrate the soil moisture, soil moisture, the detection means of soil conductivity measurement, one end of sensor is provided with terminals, terminals are made up of three probes, respectively left, neutralization right wing probe, three probe locations are parallel to each other, using three forked probe structures, sensor is implanted into soil easily and fast, realize the fixation of sensor, it is simple in construction and with low cost, moisture, temperature and the electrical conductivity in soil can be measured simultaneously, the time of measuring to the soil moisture, moisture and electrical conductivity is shortened, measurement efficiency is improved.
Description
Technical field
The utility model is related to Soil K+adsorption technical field, and in particular to a kind of soil moisture, moisture and conductivity measurement
Device.
Background technology
The soil moisture refers to the temperature in below ground soil, refers mainly to and the direct relevant subsurface shallow-layer of development of plants
Temperature.The soil moisture affects various Biochemical processes in the formation grown with soil of plant, soil, such as biological
Biochemical processes and non-chemical process, are all influenceed, extremes of temperature can all make plantation by the soil moisture caused by movable
Thing is damaged.
The soil water is the main source (except hydroponic plant) of plant absorption moisture, and planting is be unable to do without to soil moisture
Measurement.Soil moisture type is divided into four kinds, and its validity is different：1. hygroscopic moisture, dry ground adsorbs steam institute from air
The water of guarantee is invalid to plant；2. membranaceous water, the moisture that soil particle surface is adsorbed, belong to weak effective water for plant
Point；3. capillary, is the water that soil capillary pore is adsorbed, and it is again according to whether being connected with underground water is divided into capillary hanging water
(not being connected) (is connected) with capillary supporting water with underground water, most precious for plant；4. bulk water, superfluous water, are in soil
Moisture in gas-filled space, can flow out quickly, substantially invalid to plant, if therefore can effectively measure the water content in soil,
To a certain extent, the growth of kind of plant can necessarily be promoted.
Detection method in the prior art to soil moisture content is a lot, the weighting method after dried that such as collection pedotheque is weighed,
The quality moisture content and volumetric water content of soil can be drawn.It is different according to soil moisture content, its resistance also different electric-resistivity method.According to
Different according to soil moisture content, its dielectric constant is also different, the frequency domain decomposition method that thus develops, Time Domain Decomposition method, standing wave ratio
Method, capacitance method etc., to measure the dielectric constant of soil, so as to extrapolate soil moisture content.
The electrical conductivity of soil is an Important Parameters of soil, it is with the soil texture, salt content, organic levels, sun from
The characteristic of the influence crop yield such as sub- exchange level, soil compaction has good correlation.Therefore, soil conductivity information
Acquisition for determining that the difference of various field parameter spaces distribution has great importance.
At present, the measurement to soil conductivity can be divided into laboratory measurement and the major class of in-site measurement two.Soil conductivity
Laboratory measurement has higher precision, but measurement process is cumbersome, time-consuming, poor real.The in-site measurement of soil conductivity,
There are the contactless design based on electromagnetic induction principle and the contact design based on " current-voltage method ".It is contactless to utilize
Electromagnetic induction principle, alternating current is produced using instrument, then senses the change in magnetic field in soil with the coil in implantation soil,
Pass through the change in surveyed magnetic field to characterize soil conductivity value.And the design of contact, then be produced by electrode excitation it is constant
Electric current, after soil to be measured, because soil media is different, the difference of electrical conductivity make it that the voltage collected is different, by
This obtains the electrical conductivity of soil.
Often the soil moisture, moisture and electrical conductivity are measured respectively by corresponding instrument in the prior art, with
The numerical value of the temperature, moisture and the electrical conductivity that go out in soil, then logarithm value are analysed and compared, and such a measurement cost is high, and time-consuming,
And easily there is error, to cause the damage to kind of plant.
The content of the invention
The utility model provides a kind of soil moisture, moisture and conductivity measuring apparatus, and the device is the collection soil moisture, soil
The detection means that earth moisture, soil conductivity measurement are integrated, the apparatus structure is simple, with low cost, and soil can be measured simultaneously
In moisture temperature and electrical conductivity while reach the accurate effect of data, substantially reduce to the soil moisture, moisture and conductance
The time of measuring of rate, improves measurement efficiency.
In order to realize foregoing invention purpose, the utility model proposes a kind of soil moisture, moisture and conductivity measurement dress
Put, mainly including sensor unit, data acquisition and processing (DAP) unit and MCU；The sensor unit mainly includes the soil moisture
Sensor, soil moisture sensor and soil conductivity sensor；The data acquisition and processing (DAP) unit mainly turns including voltage
Change circuit, signal generating circuit, signal processing circuit, analog to digital conversion circuit, 485 telecommunication circuits；
The voltage conversion circuit is connected with external dc power, and the direct current that external dc power is provided carries out voltage
Signal generating circuit, MCU, signal processing circuit and 485 telecommunication circuits are respectively supplied to after change-over circuit conversion；
The signal generating circuit is connected with signal processing circuit, the dielectric that the signal generating circuit passes through soil media
Constant charges to soil moisture sensor；
The electric quantity change situation stored on soil moisture sensor is passed through signal processing circuit by the signal processing circuit
Calculation process, be converted to analog voltage output；
Analog-digital conversion circuit as described is connected with signal processing circuit；The analog quantity of signal processing circuit output, passes through signal
After process circuit analog-to-digital conversion, data signal is converted to, the storage and transmission of data is carried out；
485 telecommunication circuit is connected with MCU, the numerical value of the temperature, moisture and the electrical conductivity that collect, passes through 485 communications
Circuit carries out the transmission of data；
One end of the soil temperature sensor is connected with 485 transmission lines and power line, and the other end of temperature sensor is provided with
Sensor terminals, terminals are made up of three probes, respectively left probe, Road probe and right wing probe, three probes
Position is arranged in parallel to form the forked probe structure of " river " font three, and the Road probe is located at centre；
The soil moisture sensor be made up of the left probe and the ground wire of Road probe on the left of the probe of Road or
Person is made up of the right wing probe and the ground wire of Road probe on the right side of the probe of Road, the electricity stored on soil moisture sensor
Amount, is directly proportional to the dielectric constant and unit water content of soil；
The soil conductivity sensor is made up of two probes beyond left probe or right wing probe, and double probes are used
In being respectively equipped with stud in the measure of soil conductivity, double probes, described pair of probe array is arranged on the stud.Using three
Forked probe structure, can be implanted into soil by soil moisture sensor easily and fast, realize the fixation of soil sensor, and then
Effectively the moisture in soil is measured, the easy implementation simple in construction, and cost is than relatively low.
Preferably the mensuration mode of the soil temperature sensor is as of the present utility model, and temperature sensor is using high
The thermistor of precision, the thermistor directly perceives the temperature change of soil to be measured, by thermistor bleeder circuit
The measure of magnitude of voltage, is converted to corresponding temperature value.Thermistor temperature sensor is easily attached, fast response time, can be effective
Reduce time of measuring；Manufacturing cost is low, is conducive to the popularization and application in market；Small volume, floor space is small, it is to avoid soil is provided
The occupancy in source.
As it is of the present utility model preferably, in addition to microprocessor, the mensuration mode of the soil moisture sensor is to lead to
The dielectric constant that electromagnetic field principle determines soil surrounding medium is crossed, signal generating circuit provides 70Mhz oscillating electromagnetic wave, passed through
The dielectric constant of soil media charges to sensor, and the electricity and the dielectric constant and unit of soil stored on sensor capacitance contains
Water is directly proportional, the measurement by microprocessor to charging voltage, exports Soil moisture.Occurred using 70M oscillator signal
Device, peripheral circuit is simple, and stable and reliable for performance, frequency is easily controllable.
As it is of the present utility model preferably, the mensuration mode of the soil conductivity sensor is, by two electrodes
Apply different electric currents, determine two interelectrode impedances, the inverse that soil conductivity is equal to impedance is multiplied by unit constant (electrode
Between distance/electrode area), to draw soil conductivity value.
As it is of the present utility model preferably, the data acquisition and processing (DAP) unit also includes, the filter circuit of dc source
And 485 telecommunication circuit filter circuit；The filter circuit of the dc source is connected with the voltage conversion circuit, and described 485
The filter circuit of telecommunication circuit is electrically connected in one end of 485 telecommunication circuits, and one end of the filter circuit of 485 telecommunication circuits, which is connected to, adopts
Collect in equipment.Carried out data transmission using 485 telecommunication circuits, long-distance transmissions can be achieved, with reference to hand-held or fixed hand-held
Formula equipment, can realize live quickly data acquisition and displaying；Or fixed wire/wireless teletransmission equipment is used, with reference to flat
The Software for Design of platform, can by the soil moisture, moisture, electrical conductivity parameter, analyzed and shown on platform.
Preferably the signal generating circuit is oscillating signal generating circuit as of the present utility model, and oscillating circuit is used
Oscillating signal generator.Oscillating signal generator is safe and reliable, prevents self-heating pair caused by the power consumption of thermistor
The influence of accuracy of measurement.
As it is of the present utility model preferably, the temperature sensor uses thermistor temperature sensor, and thermistor is set
Put in the circuit board bottom close to three forked probes.Thermistor is located at close to the circuit board bottom of three forked probes, can be most straight
See the situation of change of the reflection soil moisture.
As it is of the present utility model preferably, the stud is CARBURIZING FURNACE FOR STAINLESS FASTENER.CARBURIZING FURNACE FOR STAINLESS FASTENER use cost is low, using model
Enclose wide, and in outdoor-monitoring, often meet with rain and dew etc., CARBURIZING FURNACE FOR STAINLESS FASTENER has the functions such as good anticorrosion, antirust, uses
Life-span is more permanent.
The utility model has the advantages that：
(1) the utility model provide the soil moisture, moisture and conductivity measuring apparatus, can fast and easy immediately arrive at
The measured value of moisture, temperature and electrical conductivity in soil, it is to avoid data are analyzed again, effectively shorten time of measuring.
(2) soil moisture, moisture and the conductivity measuring apparatus that the utility model is provided, is supplied using outside dc source
Electricity, directly can be measured from portable equipment power taking, or from the solar panel power taking of fixed measuring apparatus, with biography
That unites is compared in laboratory measurement, and in-site measurement is more convenient, and measured value is more accurate.
(3) soil moisture, moisture and the conductivity measuring apparatus that the utility model is provided, in conductivity measurement, are combined
The measurement sensor of temperature, the test data for the electrical conductivity brought to temperature change, which changes, has carried out compensating approach, it is ensured that survey
Amount result can accurately reflect conductivity values, and this apparatus structure is simple to operation, is conducive to the popularization and application in market.
Brief description of the drawings
Fig. 1 is the structural representation of sensor in the utility model soil moisture, moisture and conductivity measuring apparatus；
Fig. 2 is module connection diagram of the present utility model；
Fig. 3 is voltage conversion circuit figure of the present utility model；
Fig. 4 is 485 telecommunication circuit figures in the utility model；
Fig. 5 is dc source filter circuit figure of the present utility model；
Fig. 6 is 485 filter circuit figures in the utility model；
Fig. 7 is the signal generating circuit figure in the utility model；
Fig. 8 is the signal processing circuit figure in the utility model.
Embodiment
With reference to the accompanying drawings and detailed description with regard to the soil moisture described in the utility model, soil moisture, soil electricity
Conductance measurement apparatus and method are described further.
As shown in Figures 1 to 8, the soil moisture of the present utility model, moisture and conductivity measuring apparatus, it is main to include sensing
Device unit, data acquisition and processing (DAP) unit and MCU；Sensor unit mainly includes soil temperature sensor, soil moisture and sensed
Device and soil conductivity sensor；Data acquisition and processing (DAP) unit mainly includes voltage conversion circuit, signal generating circuit, signal
Process circuit, analog to digital conversion circuit, 485 telecommunication circuits, voltage conversion circuit are connected with external dc power, by external dc electricity
Source provide direct current carry out voltage conversion circuit conversion after be respectively supplied to signal generating circuit, MCU, signal processing circuit and
485 telecommunication circuits；Signal generating circuit is connected with signal processing circuit, the dielectric constant that signal generating circuit passes through soil media
Soil moisture sensor is charged；The electric quantity change situation stored on soil moisture sensor is passed through letter by signal processing circuit
The calculation process of number process circuit, is converted to analog voltage output；Analog to digital conversion circuit is connected with signal processing circuit；Signal
The analog quantity of process circuit output, after signal processing circuit analog-to-digital conversion, is converted to data signal, carries out the storage of data
And transmission；485 telecommunication circuits are connected with MCU, the numerical value of the temperature, moisture and the electrical conductivity that collect, are entered by 485 telecommunication circuits
The transmission of row data.
As shown in figure 1, one end of soil temperature sensor 3 is connected with 485 transmission lines 1 and power line 2, temperature sensor 3
The other end is provided with sensor terminals, and terminals are made up of three probes, and respectively left probe 5, Road probe 6 and right wing are visited
Pin 7, three probe locations are arranged in parallel to form the forked probe structure of " river " font three, and Road probe 6 is located at centre.
Soil moisture sensor by being constituted positioned at the left probe 5 in the left side of Road probe 6 and the ground wire of Road probe 6 or
By being constituted positioned at the right wing probe 7 on the right side of Road probe 6 and the ground wire of Road probe 6, the electricity stored on soil moisture sensor
Amount, is directly proportional to the dielectric constant and unit water content of soil.
Soil conductivity sensor is made up of two probes beyond left probe 5 or right wing probe 7, and double probes are used for
Stud 4 is respectively equipped with the measure of soil conductivity, double probes, double probe arrays are arranged on stud 4.Stud 4 is stainless steel
Screw, CARBURIZING FURNACE FOR STAINLESS FASTENER use cost is low, has a wide range of application, and in outdoor-monitoring, often meets with rain and dew etc., CARBURIZING FURNACE FOR STAINLESS FASTENER
With functions such as good anticorrosion, antirusts, service life is more permanent.
The mensuration mode of soil temperature sensor is that temperature sensor uses high-precision thermistor, the thermistor
The temperature change of soil to be measured is directly perceived, by the measure of the magnitude of voltage to thermistor bleeder circuit, is converted to corresponding
Temperature value.
Temperature sensor unit can be implanted directly into soil, the resistance of thermistor, changed with the change of temperature, right
Apply voltage on thermistor, after partial pressure, the magnitude of voltage on thermistor can be collected by A/D samplings, so as to count
Calculate the resistance of thermistor.Also the Current Temperatures of soil can by look-up table or calculation formula, be obtained.
Because thermistor is located immediately at the circuit board bottom close to three forked probes, it most can intuitively reflect the soil moisture
Situation of change, the selection of high precision thermosensitive resistor and high-precision divider resistance, it is ensured that the precision of sampling, while using relatively low
Sample rate current, prevent influence of the self-heating to accuracy of measurement caused by the power consumption of thermistor.
The mensuration mode of soil moisture sensor is that measurement apparatus also includes microprocessor, is determined by electromagnetic field principle
The dielectric constant of soil surrounding medium, signal generating circuit provides 70Mhz oscillating electromagnetic wave, normal by the dielectric of soil media
Several that sensor is charged, the electricity stored on sensor capacitance is directly proportional to the dielectric constant and unit water content of soil, passes through
Measurement of the microprocessor to charging voltage, exports Soil moisture.
The mensuration mode of soil conductivity sensor is, by the way that two electrodes are applied with different electric currents, to determine two electricity
The impedance of interpolar, the inverse that soil conductivity is equal to impedance is multiplied by unit constant (interelectrode distance/electrode area), that must be unearthed
Earth conductivity value.
During measurement, soil moisture sensor and soil conductivity sensor share three forked needles, and wherein soil conductivity is sensed
Device employs two forked needle arrays to measure electrical conductivity, and two forked needle arrays are located on the CARBURIZING FURNACE FOR STAINLESS FASTENER of forked probe.If skin
Grease on skin, which is touched, can influence the measurement accuracy of electrical conductivity after screw, it is therefore desirable to which screw is cleaned.Before use,
Conductivity sensor need to be calibrated first, measurement accuracy is reached 10% error range.Soil moisture sensor is employed
Another in three forked needles, and the ground wire of the conductivity probe of Road is combined, constitute soil moisture measurement device.
The measurement apparatus can be horizontally mounted can also right angle setting, when being horizontally mounted, first in soil dig chisel one ratio
The hole or ditch that several centimetre deeply of sensor fitting depth, then wipe the soil of soil longitudinal section upper mounting portion position off, spill and do not disturbed
The whole sensing position of sensor, then will be all inserted into soil by dynamic soil layer, to pacify when finally backfilling soil and shine soil
Naturally-occurring level, make the soil conservation original state density around sensor.During right angle setting, a diameter is first bored on the ground
4 inches of hole, the length of the depth proximity sensor of hole, then with hand or other instruments by the trident on sensor
, can be using pvc pipe as instrument in the not disturbed soil of probe insertion hole bottom, the groove that tube bottom end is carved can be with
For fixing sensor, cable is placed in pipe, after sensor insertion is fixed, can be taken away pvc pipe, finally be backfilled soil
When keep the natural unit weight of soil, be careful not to damage sensor and cable.
The setting angle of sensor is noted also in installation process, but is due to that the utility model is visited because use is forked
Pin, it is possible to need to insert soil with any angle according to experiment.When taking out sensor, in order to avoid the cable to annex
Damage is caused, fault is caused, should be noted mode and dynamics.
In order to measure it is different in soil treat measured value, multiple sensors can be also installed, to measure soil in this device
Different in earth to treat measured value, it is, by a screw on actuated sensor, to determine that conductivity sensor, which determines electrical conductivity (EC),
Current strength between the screw and another grounding screw is realized.The spacing of two screws is the important ginseng for calculating EC
Number.If the distance that two sensors are laid is too near (being less than 20cm), the electric current meeting for the screw that is excited on one of sensor
By the screw being grounded on another sensor, false readings are caused to produce.As long as ground wire is then, adopted all regardless of number
This problem can be faced.If experiment in sensor inevitably will from it is close, can be separated by mounting means
Each bar ground wire.For example, it is desired to when installing multiple sensors in short distance on vertical section, they should not be inserted in same hang down
On line position, and it is staggered, it can thus meet require that for spacing.
The following is relevant soil moisture and soil conductivity measuring process：
A kind of soil moisture value measurement method, comprises the following steps：
(1) dc source that outside is provided is converted to 3.3V and is supplied to signal generating circuit and MCU by voltage conversion circuit
And signal processing circuit, 485 telecommunication circuits；
(2) signal generating circuit produces 70M oscillator signal, and soil moisture sensor is charged, is sent to simultaneously
Signal processing circuit；
(3) electricity stored on soil moisture sensor electric capacity, is directly proportional to the dielectric constant and unit water content of soil；
(4) electricity conversion stored on soil moisture sensor is analog signal output by signal processing circuit；
(5) charge value is converted to data signal by analog to digital conversion circuit；
(6) MCU is handled data signal, according to calculation formula, is converted to corresponding soil moisture parameter value；
(7) MCU sends Soil moisture to external equipment by 485.
A kind of soil conductivity measuring method, comprises the following steps：
(1) dc source that outside is provided is converted to 3.3V and is supplied to the communication electricity of MCU and 485 by voltage conversion circuit
Road；
(2) MCU charges to the A poles in conductivity sensor；
(3) level of the B poles of measurement conductivity sensor；
(4) MCU charges to the B poles of conductivity sensor；
(5) level of measurement conductivity sensor A poles；
(6) average of (3) and (5) is calculated, soil conductivity is calculated according to calculation formula；
(7) by the soil conductivity calculated, external equipment is sent to by 485.
Described above is preferred embodiment of the present utility model, is not departed from for the person of ordinary skill of the art
On the premise of the utility model principle, some variations and modifications can also be made, these also should be regarded as protection of the present utility model
Scope.
Claims (8)
1. a kind of soil moisture, moisture and conductivity measuring apparatus, mainly including sensor unit, data acquisition and processing (DAP) unit
And MCU；The sensor unit mainly includes soil temperature sensor, soil moisture sensor and soil conductivity sensor；
The data acquisition and processing (DAP) unit mainly includes voltage conversion circuit, signal generating circuit, signal processing circuit, analog-to-digital conversion
Circuit, 485 telecommunication circuits, it is characterised in that：
The voltage conversion circuit is connected with external dc power, and the direct current that external dc power is provided carries out voltage conversion
Signal generating circuit, MCU, signal processing circuit and 485 telecommunication circuits are respectively supplied to after circuit conversion；
The signal generating circuit is connected with signal processing circuit, the dielectric constant that the signal generating circuit passes through soil media
Soil moisture sensor is charged；
The electric quantity change situation stored on soil moisture sensor is passed through the fortune of signal processing circuit by the signal processing circuit
Calculation is handled, and is converted to analog voltage output；
Analog-digital conversion circuit as described is connected with signal processing circuit；The analog quantity of signal processing circuit output, passes through signal transacting
After circuit analog-to-digital conversion, data signal is converted to, the storage and transmission of data is carried out；
485 telecommunication circuit is connected with MCU, the numerical value of the temperature, moisture and the electrical conductivity that collect, passes through 485 telecommunication circuits
Carry out the transmission of data；
One end of the soil temperature sensor (3) is connected with 485 transmission lines (1) and power line (2), temperature sensor (3) it is another
One end is provided with sensor terminals, and terminals are made up of three probes, respectively left probe (5), Road probe (6) and right wing
Probe (7), three probe locations are arranged in parallel to form the forked probe structure of " river " font three, Road probe (6) position
In centre；
The soil moisture sensor is by the left probe (5) and the ground wire group of Road probe (6) on the left of Road probe (6)
Constitute into or by the ground wire of right wing probe (7) on the right side of Road probe (6) and Road probe (6), soil moisture sensing
The electricity stored on device, is directly proportional to the dielectric constant and unit water content of soil；
The soil conductivity sensor is made up of two probes beyond left probe (5) or right wing probe (7), double probes
For the measure of soil conductivity, stud (4) is respectively equipped with double probes, described pair of probe array is arranged on the stud (4)
On.
2. the soil moisture according to claim 1, moisture and conductivity measuring apparatus, it is characterised in that：The soil temperature
The mensuration mode of degree sensor is that temperature sensor uses high-precision thermistor, and the thermistor directly perceives soil to be measured
The temperature change of earth, by the measure of the magnitude of voltage to thermistor bleeder circuit, is converted to corresponding temperature value.
3. the soil moisture according to claim 1, moisture and conductivity measuring apparatus, it is characterised in that：Also include micro- place
Device is managed, the mensuration mode of the soil moisture sensor is that the dielectric constant of soil surrounding medium is determined by electromagnetic field principle,
Signal generating circuit provides 70Mhz oscillating electromagnetic wave, and sensor is charged by the dielectric constant of soil media, sensor electricity
The electricity stored in appearance is directly proportional to the dielectric constant and unit water content of soil, the survey by microprocessor to charging voltage
Amount, exports Soil moisture.
4. the soil moisture according to claim 1, moisture and conductivity measuring apparatus, it is characterised in that：The soil electricity
The mensuration mode of conductivity sensor is, by the way that two electrodes are applied with different electric currents, to determine two interelectrode impedances, soil
The inverse that electrical conductivity is equal to impedance is multiplied by unit constant, that is, interelectrode distance/electrode area, to draw soil conductivity
Value.
5. the soil moisture according to claim 1, moisture and conductivity measuring apparatus, it is characterised in that：The data are adopted
Collection and processing unit also include, the filter circuit of the filter circuit of dc source and 485 telecommunication circuits；The filter of the dc source
Wave circuit is connected with the voltage conversion circuit, and the filter circuit of 485 telecommunication circuit is electrically connected the one of 485 telecommunication circuits
End, one end of the filter circuit of 485 telecommunication circuits is connected on collecting device.
6. the soil moisture according to claim 1, moisture and conductivity measuring apparatus, it is characterised in that：The signal hair
Raw circuit is oscillating signal generating circuit, and oscillating circuit uses oscillating signal generator.
7. the soil moisture according to claim 1, moisture and conductivity measuring apparatus, it is characterised in that：The temperature is passed
Sensor uses thermistor temperature sensor, and thermistor is positioned close to the circuit board bottom of three forked probes.
8. the soil moisture according to claim 1, moisture and conductivity measuring apparatus, it is characterised in that：The stud (4)
It is CARBURIZING FURNACE FOR STAINLESS FASTENER.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720211883.XU CN206573161U (en) | 2017-03-06 | 2017-03-06 | A kind of soil moisture, moisture and conductivity measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720211883.XU CN206573161U (en) | 2017-03-06 | 2017-03-06 | A kind of soil moisture, moisture and conductivity measuring apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN206573161U true CN206573161U (en) | 2017-10-20 |
Family
ID=60056508
Family Applications (1)
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| CN201720211883.XU Active CN206573161U (en) | 2017-03-06 | 2017-03-06 | A kind of soil moisture, moisture and conductivity measuring apparatus |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107044866A (en) * | 2017-03-06 | 2017-08-15 | 杭州朗宝万生物科技有限公司 | The soil moisture, moisture and conductivity measuring apparatus |
| CN108444534A (en) * | 2018-05-09 | 2018-08-24 | 中国农业大学 | A kind of Soil moisture and temperature detection device |
| CN112444541A (en) * | 2020-10-13 | 2021-03-05 | 浙江省农业科学院 | Indoor simulation experiment system and method combined with dynamic in-situ soil detection |
-
2017
- 2017-03-06 CN CN201720211883.XU patent/CN206573161U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107044866A (en) * | 2017-03-06 | 2017-08-15 | 杭州朗宝万生物科技有限公司 | The soil moisture, moisture and conductivity measuring apparatus |
| CN108444534A (en) * | 2018-05-09 | 2018-08-24 | 中国农业大学 | A kind of Soil moisture and temperature detection device |
| CN108444534B (en) * | 2018-05-09 | 2019-10-22 | 中国农业大学 | A soil moisture and temperature detection device |
| CN112444541A (en) * | 2020-10-13 | 2021-03-05 | 浙江省农业科学院 | Indoor simulation experiment system and method combined with dynamic in-situ soil detection |
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