CN108645892A - A kind of axis flow of water measuring device and method - Google Patents
A kind of axis flow of water measuring device and method Download PDFInfo
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- CN108645892A CN108645892A CN201810437402.6A CN201810437402A CN108645892A CN 108645892 A CN108645892 A CN 108645892A CN 201810437402 A CN201810437402 A CN 201810437402A CN 108645892 A CN108645892 A CN 108645892A
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- 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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Abstract
A kind of axis flow of water measuring device of offer of the embodiment of the present invention and method, the device include：Probe, probe, impulse ejection module and pulse receiving module, wherein the probe is hollow-core construction, and the probe surrounds the probe, and porous material is filled inside the probe, and the probe is insulating materials, the probe inner surface snearing conductive material；Wherein, the impulse ejection module receives the electromagnetic wave on the probe by the inner surface conductive material by the probe emission electromagnetic wave, the pulse receiving module.A kind of axis flow of water measuring device and method provided in an embodiment of the present invention, pass through the moisture value of porous material in measuring probe, then measured value is passed to by data acquisition device by cable, and then plant haulm Xylem water potential is obtained according to the moisture flow of water relation curve of porous material, realize the detection to the axis flow of water, with simplicity is used, accurate advantage is measured.
Description
Technical field
The present embodiments relate to forestry survey technical field more particularly to a kind of axis flow of water measuring device and sides
Method.
Background technology
Plant water potential is the Common Parameters in the Water Physiology research of plant, is all occupied very in many field of scientific studies
Consequence.British scientist Philip proposes soil-plant-greatly according to flow of water concept for the first time in the 1960s
Gas non-individual body (abbreviation SPAC) concept, the water flow in plant is illustrated with this.
As the intermediate link in SPAC non-individual bodies, plant water potential is influenced by the air flow of water, soil water potential, and plant
The water potential gradient of root, stem, leaf can be equally formed in vivo so that moisture enters from root system in plant, is transported upwards by xylem
It is defeated, blade is reached, it is then rising, lost from blade surface, it returns in air.In plant water physiology research, plant water potential
It can reflect plant moisture degree of saturation, drought resistance etc., be one of important indicator of plant research.
In facility agriculture and forestry Environmental Studies field, the changing rule of plant water potential is changed to plant external environmental condition
Concentrated expression, it can embody plant each season physiological activity the case where, thus can be used as a physiological factor
Carry out facilities environment regulation and control.In agriculture and forestry water-saving irrigation research, the flow of water of crops and plant is also an important reference
Content, it is the most direct way for understanding plant moisture situation and determining irrigation period to measure plant water potential.
Currently, the method for measuring plant water potential mainly has dye method, chamber method, thermocouple thermometer method and dew point wet
Meter method etc. is spent, they mainly apply to the basic research of plant water physiology.But these existing measuring techniques water-saving and
Application is not strong in the fields such as the facility agriculture and forestry environment conditioning based on plant physiology, is mainly manifested in：
The object that these detection methods measure is the Plant tissue samples of well cutting, that is, is detached from plant integrally to local organization
The measurement of the flow of water is carried out, the water potential value accuracy measured in this way is not high；These detection methods when measuring plant water potential, need compared with
Long time, real-time are poor；These detection methods have the error that more human factor generates in measurement process.
Invention content
A kind of axis flow of water measuring device of offer of the embodiment of the present invention and method, to solve axis in the prior art
The flow of water measures inaccurate defect, realizes the accurate measurement of the axis flow of water.
The embodiment of the present invention provides a kind of axis flow of water measuring device, including：Probe, probe, impulse ejection module and
Pulse receiving module, wherein the probe is cylinder hollow-core construction, and the probe surrounds the probe, filled out inside the probe
Porous material is filled, the probe is insulating materials, the probe inner surface snearing conductive material；
Wherein, the impulse ejection module is by the probe emission electromagnetic wave, described in the pulse receiving module receives
Electromagnetic wave on probe.
The embodiment of the present invention provides a kind of axis flow of water measurement method, including：
The probe is placed in inside the stem for waiting for measuring plants；
Utilize the impulse ejection module and the probe emission electromagnetic wave；
The electromagnetic wave on the probe is received by the pulse receiving module, and institute is obtained according to the electromagnetic wave received
State the moisture of porous material；
It is waited for according to described in the acquisition of the moisture flow of water relation curve of the moisture of the porous material and the porous material
The flow of water of measuring plants.
A kind of axis flow of water measuring device and method provided in an embodiment of the present invention, pass through porous material in measuring probe
Moisture value, measured value is then passed to by data acquisition device by cable, and then close according to the moisture flow of water of porous material
It is that curve obtains plant haulm Xylem water potential, realizes the detection to the axis flow of water, have using simplicity, measures accurate excellent
Point.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Some bright embodiments for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is a kind of structural schematic diagram of axis flow of water measuring device of the embodiment of the present invention；
Fig. 2 is a kind of flow chart of axis flow of water measurement method of the embodiment of the present invention.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
The every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
Fig. 1 is a kind of structural schematic diagram of axis flow of water measuring device of the embodiment of the present invention, as shown in Figure 1, the device
Including：Probe 7, probe 5, impulse ejection module and pulse receiving module, wherein the probe is hollow-core construction, the probe
The probe is surrounded, porous material is filled inside the probe, the probe is insulating materials, and the probe inner surface snearing is led
Electric material；
Wherein, the impulse ejection module is by the probe emission electromagnetic wave, described in the pulse receiving module receives
Electromagnetic wave on probe.
It should be noted that impulse ejection module and pulse receiving module are usually lsi development plate, but also may be used
To be that other can realize impulse ejection and pulse receive capabilities, in the market packaged finished product.
Impulse ejection module and pulse receiving module can concentrate on a set of development board, can also individually separate, in Fig. 1
Exactly pulse transmitting module and pulse receiving module are concentrated in together, that is, figure label is position shown in 1.
When carrying out the measurement of the axis flow of water using the device, the xylem for probe 7 being inserted into axis to be measured is needed
Position, since the probe 7 in the embodiment of the present invention is hollow-core construction, probe 5 is again positioned at the inside of probe 7.
Specifically, the probe 5 is connect with the impulse ejection module.
It inserts a probe into inside axis for convenience, 7 lower part of popping one's head in is divided into conical head.Probe 5 and impulse ejection mould
Block connects, and impulse ejection module launches electromagnetic wave by probe 5.
The electromagnetic wave of transmitting is transmitted around by porous material, and the moisture in porous material influences whether electromagnetic wave
Transmission, therefore, when electromagnetic transmission to probe 7 inner surface when, due to probe 7 inner surface coated with conductive material, Ke Yigeng
Good electromagnetic wave absorption, and probe 7 is made of insulating materials, can prevent the electromagnetic wave absorbed from overflowing.
By the transmission of porous material 3, probe inner surface is reached, therefore, the Metal absorption electromagnetic wave for inner surface of popping one's head in, and
It will be in the electromagnetic transmission of absorption to pulse receiving module.
Pulse receiving module exports certain voltage value according to the electromagnetic wave received, which can reflect porous material
3 moisture value in material, then according to the moisture flow of water relation curve of porous material 3, so that it may to obtain axis water potential value to be measured.
Optionally, which needs power supply power supply during the work time, can connect external power supply power supply, can also be internal
Integrated power supply module is powered it, and the embodiment of the present invention does not do specific restriction herein.
It should be noted that porous material is a kind of by being mutually communicated or closed hole constitutes the material of network structure,
The boundary or surface of hole are made of pillar or tablet.Typical pore structure has：One is by a large amount of polygonal holes in the plane
Assemble the two-dimensional structure formed, is referred to as " honeycomb " material in the hexagonal structure of honeycomb due to being shaped like；It is more general
Time be the three-dimensional structure formed in space clustering by a large amount of polyhedron-shaped holes, normally referred to as " foam " material.Such as
The solid of fruit composition hole exists only in the boundary (being communicated between hole) of hole, then referred to as trepanning；If well table
Face is also solid, i.e., each hole and surrounding hole are completely separated, then referred to as closed pore；And some holes are then half trepanning semi-closures
Hole.
The type of porous material is unrestricted in the embodiment of the present invention, and any porous material with the same function belongs to
The scope of protection of the invention.
The moisture flow of water relation curve of porous material indicates the correspondence of moisture and the flow of water, and being can be according to porous material
Type be known in advance.
On the basis of the above embodiments, specifically, the insulating materials that probe 7 is made can be any nonconducting non-gold
Belong to material.
The conductive material for 7 inner surface snearings of popping one's head in can be the metal material of any conduction, and the embodiment of the present invention is with metal
For foil 2, metal foil be with cold draw at foil.Mainly there are two kinds of the thermoprint of pure gold foil, pure silver foil and thermoprint.Metal
Foil 2 is mainly used to receive electromagnetic wave, by the electromagnetic transmission being absorbed into pulse receiving module after 7 electromagnetic wave absorptions of popping one's head in,
Pulse receiving module detects the moisture of porous material according to the electromagnetic wave variable quantity received.
On the basis of the above embodiments, specifically, the electromagnetic radiation pole of the probe 5 and the water content detection module
Connection.
When by moisture in electromagnetic wave measurement axis, pulse receiving module passes through probe 5 and emits electromagnetic wave, tool
The connection structure of body is that probe 5 is extremely connected with the electromagnetic radiation of pulse receiving module.
On the basis of the above embodiments, it is preferable that the pulse receiving module passes through conducting wire 6 and the probe inner surface
Metal foil 2 connects.
On the basis of the above embodiments, it is preferable that the probe 5 is located at 7 internal axis of the probe.
Specifically, probe 5 and 7 coaxial arrangement of probe, due to being each side of electromagnetic wave coaxial, that probe 5 emits
Upwards with probe 7 inner surfaces at a distance from it is identical, that is to say, that electromagnetic wave reach probe 7 inner surfaces time be it is identical, therefore
7 inner surface electromagnetic wave absorptions of popping one's head in are also more uniform, to also more accurate to the measurement of soil moisture.
On the basis of the above embodiments, it is preferable that be uniformly arranged through-hole 4 on the probe 7.
Specifically, it is uniformly arranged through-hole 4 on probe 7, facilitates the moisture and 7 outside stems of probe of 7 internal porous materials of probe
Stalk xylem moisture circulates, and avoids excess moisture or the very few inside for being gathered in probe 7, causes measured by the device
Porous material moisture cannot represent the average moisture of stalk xylem, can keep 5 He of device probe by the way that through-hole 4 is arranged
7 inside and outside stalk xylem water tariff collections of popping one's head in balance, and improve stem flow of water accuracy of detection.
Through-hole 4 occupies the 60% of 7 surface areas of probe, does not obstruct the circulation of moisture between xylem and probe.
The shapes and sizes of through-hole 4 can determines according to actual conditions, and the embodiment of the present invention is not limited it at this.
A kind of axis flow of water measuring device provided in an embodiment of the present invention, passes through the moisture of porous material in measuring probe
Value, then passes to data acquisition device, and then according to the moisture flow of water relation curve of porous material by cable by measured value
Plant haulm Xylem water potential is obtained, realizes the detection to the axis flow of water, has using simplicity, measures accurate advantage.
Fig. 2 is a kind of flow chart of axis flow of water measurement method of the embodiment of the present invention, as shown in Fig. 2, this method includes：
The probe is placed in inside the stem for waiting for measuring plants；
Utilize the impulse ejection module and the probe emission electromagnetic wave；
The electromagnetic wave on the probe is received by the pulse receiving module, and institute is obtained according to the electromagnetic wave received
State the moisture of porous material；
It is waited for according to described in the acquisition of the moisture flow of water relation curve of the moisture of the porous material and the porous material
The flow of water of measuring plants.
When being measured to the axis flow of water using the device, it is small that the bast of plant removed one first with tool
A hole to match with measuring device flow of water probe size is bored in part using drill bit in the xylem of plant.It uses
External power supply is powered for the device, which can connect with data collection data.By the measuring device probe placement in being drilled
In hole, stalk xylem moisture carries out the porous material in Water Transport, with probe by hole and reaches water balance.
By one section of equilibration time, the moisture value of porous material, utilizes impulse ejection during the flow of water is popped one's head in order to obtain
Module is by probe emission electromagnetic wave, by the electromagnetic wave on pulse receiving module receiving transducer, and according to the electromagnetism received
Wave obtains the moisture of the porous material；Using moisture-flow of water relational expression of porous material, porous material can be conversed
Water potential value to get to the stem water potential value of plant.
The specific implementation procedure of this method embodiment is identical as the specific implementation procedure of above-mentioned apparatus embodiment, and details please join
It is admitted to and states device embodiment, details are not described herein for this method embodiment.
The apparatus embodiments described above are merely exemplary, wherein the unit illustrated as separating component can
It is physically separated with being or may not be, the component shown as unit may or may not be physics list
Member, you can be located at a place, or may be distributed over multiple network units.It can be selected according to the actual needs
In some or all of module achieve the purpose of the solution of this embodiment.Those of ordinary skill in the art are not paying creativeness
Labour in the case of, you can to understand and implement.
Through the above description of the embodiments, those skilled in the art can be understood that each embodiment can
It is realized by the mode of software plus required general hardware platform, naturally it is also possible to pass through hardware.Based on this understanding, on
Stating technical solution, substantially the part that contributes to existing technology can be expressed in the form of software products in other words, should
Computer software product can store in a computer-readable storage medium, such as ROM/RAM, magnetic disc, CD, including several fingers
It enables and using so that a computer equipment (can be personal computer, server or the network equipment etc.) executes each implementation
Method described in certain parts of example or embodiment.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, it will be understood by those of ordinary skill in the art that：It still may be used
With technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features；
And these modifications or replacements, various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (8)
1. a kind of axis flow of water measuring device, which is characterized in that including：Probe, probe, impulse ejection module and pulse receive
Module, wherein the probe is cylinder hollow-core construction, and the probe surrounds the probe, porous material is filled inside the probe
Material, the probe are insulating materials, the probe inner surface snearing conductive material；
Wherein, the impulse ejection module receives the probe by the probe emission electromagnetic wave, the pulse receiving module
On electromagnetic wave.
2. device according to claim 1, which is characterized in that the probe is connect with the impulse ejection module.
3. device according to claim 1, which is characterized in that the pulse receiving module passes through table in conducting wire and the probe
Face conductive layer connection.
4. device according to claim 3, which is characterized in that the probe is located at the probe internal axis.
5. device according to claim 1, which is characterized in that be uniformly arranged through-hole on the probe.
6. device according to claim 1, which is characterized in that the insulating materials includes nonmetallic materials.
7. device according to claim 3, which is characterized in that the conductive material is metal.
8. a kind of axis flow of water measurement method according to any described device of claim 1 to 7, which is characterized in that including：
The probe is placed in inside the stem for waiting for measuring plants；
Utilize the impulse ejection module and the probe emission electromagnetic wave；
The electromagnetic wave on the probe is received by the pulse receiving module, and described more according to the electromagnetic wave acquisition received
The moisture of Porous materials；
The plant to be measured is obtained according to the moisture flow of water relation curve of the moisture of the porous material and the porous material
The flow of water of object.
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| CN201810437402.6A CN108645892A (en) | 2018-05-09 | 2018-05-09 | A kind of axis flow of water measuring device and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810437402.6A CN108645892A (en) | 2018-05-09 | 2018-05-09 | A kind of axis flow of water measuring device and method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110320247A (en) * | 2019-07-09 | 2019-10-11 | 中国农业大学 | Plant haulm water content damage-free measuring apparatus and method |
| CN110988038A (en) * | 2019-12-12 | 2020-04-10 | 中国农业大学 | Soil moisture characteristic line measuring device and measuring method thereof |
| CN112931167A (en) * | 2021-03-22 | 2021-06-11 | 中国农业大学 | Plant irrigation decision system and method |
-
2018
- 2018-05-09 CN CN201810437402.6A patent/CN108645892A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110320247A (en) * | 2019-07-09 | 2019-10-11 | 中国农业大学 | Plant haulm water content damage-free measuring apparatus and method |
| CN110988038A (en) * | 2019-12-12 | 2020-04-10 | 中国农业大学 | Soil moisture characteristic line measuring device and measuring method thereof |
| CN112931167A (en) * | 2021-03-22 | 2021-06-11 | 中国农业大学 | Plant irrigation decision system and method |
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Application publication date: 20181012 |
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