CN208188031U - Soil moisture measurement device, sensor - Google Patents
Soil moisture measurement device, sensor Download PDFInfo
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- CN208188031U CN208188031U CN201820535904.8U CN201820535904U CN208188031U CN 208188031 U CN208188031 U CN 208188031U CN 201820535904 U CN201820535904 U CN 201820535904U CN 208188031 U CN208188031 U CN 208188031U
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Abstract
This application discloses a kind of soil moisture measurement devices, sensor.The device includes: the hollow body being placed in soil and the measuring device for measuring moisture in soil, measuring device is set on hollow body, measuring device includes: measuring circuit and measuring electrode, measuring circuit is connect with measuring electrode, measuring electrode includes: first electrode ring and second electrode ring, first electrode ring and second electrode ring are respectively arranged at the surface of hollow body, and hollow body surface location where first electrode ring is located at the parallel position of second electrode ring place hollow body surface location；Measuring circuit in hollow body respectively with outside hollow body first electrode ring and second electrode ring be electrically connected, for first electrode ring and second electrode ring measurement in a closed series to be obtained the moisture content value that capacitance result is converted into current soil.Present application addresses as PCB electrode poor plasticity and intensity it is inadequate caused by measurement accuracy, resolution limitations the technical issues of.
Description
Technical field
This application involves soil moisture measurement fields, in particular to a kind of soil moisture measurement device, sensor.
Background technique
Agriculture Internet of Things networking, sensor become one of technical way, not heavy for the sensor special of soil
Quantum jump is also all present in is tested by traditional electrode mode at present, and electrode is varied, and electrode has been improved
Help preferably improve soil sensor technology, better services are in agricultural.
Soil moisture sensor is divided into frequency domain method measurement and time domain method measurement at present, and time domain method is limited by hardware cost to be difficult
Accomplish universalness, frequency domain method be commercially available using flowers and plants monitor as a series of products of representative be widely applied and by
To higher evaluation.Prior art measurement forms capacitor by one group of PCB electrode, measures soil water content, need by
PCB electrode is inserted directly into soil, passes through frequency domain method testing soil moisture content.
But PCB electrode poor plasticity, limit the shape and form of product.Such as: manufacture craft relative activity is poor,
It can only be made into the mode tested in laminated structure insertion soil, the intensity of structure cannot be guaranteed, if fruit product is too long, influence
Intensity；And the form of electrode is only plane formula capacitor, limits the measurement accuracy and resolution ratio of product in this way, and right
It is very high in the requirement that soil is contacted with electrode.
For asking for the measurement accuracy, resolution limitations caused by inadequate of PCB electrode poor plasticity and intensity in the related technology
Topic, currently no effective solution has been proposed.
Summary of the invention
The main purpose of the application is to provide a kind of soil moisture measurement device, sensor, plastic to solve PCB electrode
Measurement accuracy, resolution limitations problem caused by property difference and intensity are inadequate.
To achieve the goals above, according to the one aspect of the application, a kind of soil moisture measurement device is provided.
Soil moisture measurement device according to the application includes: the hollow body being placed in soil and for measuring in soil
The measuring device of moisture, the measuring device are set on the hollow body, and the measuring device includes: measuring circuit and survey
Electrode is measured, the measuring electrode includes: first electrode ring and second electrode ring, the first electrode ring and the second electrode ring
It is respectively arranged at the surface of the hollow body, and hollow body surface location is located at described second where the first electrode ring
The parallel position of hollow body surface location where electrode retaining collar；The measuring circuit in the hollow body is respectively and in institute
The first electrode ring and the second electrode ring stated outside hollow body are electrically connected, and are used for the first electrode ring and institute
It states second electrode ring measurement in a closed series and obtains the moisture content value that capacitance result is converted into current soil.
Further, the hollow body is the cylindrical body being made of nylon material.
Further, the first electrode ring/second electrode ring is multiple, is arranged in parallel in described hollow respectively
The surface of body.
Further, the first electrode ring/second electrode ring includes: conductive layer and insulating layer, the insulating layer
It is set on the outer surface of the conductive layer.
Further, teflon material layer is coated on the outer surface of the conductive layer.
Further, at least two annular grooves are provided on the outer surface of the hollow body, it is two adjacent described
Annular groove, for in the first electrode ring/second electrode ring first electrode ring and second electrode ring match.
Further, it is connect by dispensing with the hollow body in the first electrode ring/second electrode ring.
Further, the measuring circuit is electrically connected by conducting wire and the first electrode ring/second electrode ring,
The conducting wire passes through at least two cable holes opened up on the hollow body.
To achieve the goals above, according to the another aspect of the application, a kind of soil moisture sensor is provided.
Soil moisture sensor according to the application includes: the soil moisture measurement device.
To achieve the goals above, according to the another aspect of the application, a kind of soil moisture sensor is provided.
Soil moisture sensor according to the application includes: the soil moisture measurement device.
In the embodiment of the present application, by the way of soil moisture measuring, pass through hollow body and measuring device
Cooperation, has reached the first electrode ring in measuring device, second electrode ring is arranged in parallel on the surface of hollow body and measures electricity
Capacitance, and by the purpose of the moisture content value for being converted to soil of measuring circuit, to realize enhancing intensity and plastic
The technical effect of property, so solve as PCB electrode poor plasticity and intensity it is inadequate caused by measurement accuracy, resolution limitations
The technical issues of.
Detailed description of the invention
The attached drawing constituted part of this application is used to provide further understanding of the present application, so that the application's is other
Feature, objects and advantages become more apparent upon.The illustrative examples attached drawing and its explanation of the application is for explaining the application, not
Constitute the improper restriction to the application.In the accompanying drawings:
Fig. 1 is the soil moisture measurement device or sensor structure schematic diagram according to the embodiment of the present application；
Fig. 2 is the soil moisture measurement device or sensor structure block diagram according to the embodiment of the present application；
Fig. 3 is the soil moisture measurement device or sensor circuit schematic diagram according to the embodiment of the present application.
Appended drawing reference
1, hollow body；2, measuring device；21, measuring circuit；22, measuring electrode；221, first electrode ring；222, second
Electrode retaining collar.
Specific embodiment
In order to make those skilled in the art more fully understand application scheme, below in conjunction in the embodiment of the present application
Attached drawing, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described embodiment is only
The embodiment of the application a part, instead of all the embodiments.Based on the embodiment in the application, ordinary skill people
Member's every other embodiment obtained without making creative work, all should belong to the model of the application protection
It encloses.
It should be noted that the description and claims of this application and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so as to embodiments herein described herein.In addition, term " includes " and " tool
Have " and their any deformation, it is intended that cover it is non-exclusive include, for example, containing a series of steps or units
Process, method, system, product or equipment those of are not necessarily limited to be clearly listed step or unit, but may include without clear
Other step or units listing to Chu or intrinsic for these process, methods, product or equipment.
In this application, term " on ", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outside",
" in ", "vertical", "horizontal", " transverse direction ", the orientation or positional relationship of the instructions such as " longitudinal direction " be orientation based on the figure or
Positional relationship.These terms are not intended to limit indicated dress primarily to better describe the present invention and embodiment
Set, element or component must have particular orientation, or constructed and operated with particular orientation.
Also, above-mentioned part term is other than it can be used to indicate that orientation or positional relationship, it is also possible to for indicating it
His meaning, such as term " on " also are likely used for indicating certain relations of dependence or connection relationship in some cases.For ability
For the those of ordinary skill of domain, the concrete meaning of these terms in the present invention can be understood as the case may be.
In addition, term " installation ", " setting ", " being equipped with ", " connection ", " connected ", " socket " shall be understood in a broad sense.For example,
It may be a fixed connection, be detachably connected or monolithic construction；It can be mechanical connection, or electrical connection；It can be direct phase
It even, or indirectly connected through an intermediary, or is two connections internal between device, element or component.
For those of ordinary skills, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
As shown in Figure 1-3, the device includes: in being placed in soil this application involves a kind of soil moisture measurement device
Empty ontology 1 and measuring device 2 for measuring moisture in soil, the measuring device 2 are set on the hollow body 1, in
Empty ontology 1 refers to the internal hollow structure with accommodation space, so as to which measuring circuit 21 is arranged wherein, and being capable of conduct
Measuring electrode 22 is arranged on the surface in substrate；And then strengthen the intensity of measuring electrode 22 indirectly by hollow body 1；It will be hollow
Ontology 1 is placed in soil, and soil moisture can be measured by measuring device 2 by contacting with soil.The measuring device 2 includes: to survey
Amount circuit 21 and measuring electrode 22, the measuring circuit 21 are connect with the measuring electrode 22, when measuring circuit 21 has energization
The effect that measuring electrode 22 measures is controlled, the measurement for the moisture content value of soil provides safeguard.The measuring electrode 22 includes:
First electrode ring 221 and second electrode ring 222, the first electrode ring 221 and the second electrode ring 222 are respectively arranged at institute
The surface of hollow body 1 is stated, and 221 place hollow body of first electrode ring, 1 surface location is located at the second electrode ring
The parallel position of 222 place hollow body, 1 surface location；The shape of first electrode ring 221 and second electrode ring 222 can root
Change according to the variation on the surface of hollow body 1, to improve the plasticity of the first and second electrode retaining collar, and due to measurement electricity
Pole 22 strengthens the intensity of itself by hollow body 1, i.e. the intensity of the first and second electrode retaining collar is strengthened, and then improves measurement
Precision and resolution ratio；When hollow body 1 is inserted into soil, first electrode ring 221, second electrode ring 222 and Zinc fractions electricity
Hold, first electrode ring 221 and second electrode ring 222 are two pieces of pole plates of capacitor, and soil is capacitor dielectric, due to water in soil
Therefore the variation that point changes of contents will lead to capacitance passes through measuring circuit 21, first electrode ring 221 and second electrode ring 222
Cooperation, tested by frequency domain method, the measurement of capacitance may be implemented.The measuring circuit 21 in the hollow body 1
Respectively with outside the hollow body 1 the first electrode ring 221 and the second electrode ring 222 be electrically connected, for will
The first electrode ring 221 and 222 measurement in a closed series of second electrode ring obtain the water that capacitance result is converted into current soil
Divide content value；The capacitance result measured is converted into moisture content value by measuring circuit 21, completes soil moisture content
Measurement.
As shown in figure 3, the working principle of the measuring device 2 in the present invention is as follows: there are measured capacitances (among S1 and S2
One electrode retaining collar 221 and second electrode ring 222), this capacitor and R19 constitute RC charge-discharge circuit, and pwm signal passes through DIO0_11
Motivate this RC circuit in end.The signal at the both ends R19 is accessed into XOR gate input terminal, the output end of XOR gate reconnects RC and smoothly filters
Wave circuit, from DIO0_12 collection voltages signal.If capacitance produces variation, DIO0_12 voltage can be caused accordingly
Variation.Capacitance can be measured using this principle.
It can be seen from the above description that the application realizes following technical effect:
In the embodiment of the present application, by the way of soil moisture measuring, pass through hollow body 1 and measuring device 2
Cooperation, reached the first electrode ring 221 in measuring device 2, second electrode ring 222 is arranged in parallel in the table of hollow body 1
Capacitance, and the purpose of the moisture content value for being converted to soil by measuring circuit 21 are measured on face, to realize increasing
The technical effect of strong intensity and plasticity, and then it is smart to solve the measurement as caused by PCB electrode poor plasticity and intensity are inadequate
Degree, resolution limitations the technical issues of.
As preferably, the hollow body 1 is the cylindrical body being made of nylon material in the present embodiment.Pass through cylindrical body
Design, keeps the surface of hollow body 1 rounded, to be relatively easy in insertion soil, and can be designed according to surface circular
Electrode retaining collar (first electrode ring 221 and second electrode ring 222) is mentioned around hollow body 1 is fitted in increase intensity and plasticity
For ensureing, the soil water content value on a circular arc interface can be measured.Optionally, electrode retaining collar can be only bonded, without ring
Around hollow body 1.
As preferred in the present embodiment, second electrode ring 222 described in the first electrode ring 221/ be it is multiple, put down respectively
Row is set to the surface of the hollow body 1.Multiple first electrode rings 221 and second electrode ring 222 are respectively arranged at different
Depth of soil is able to detect the moisture content value of the soil of multiple and different depths, thus to promote the precision of moisture content value
Provide guarantee.
As preferred in the present embodiment, second electrode ring 222 described in the first electrode ring 221/ include: conductive layer and
Insulating layer, the insulating layer are set on the outer surface of the conductive layer.Surface insulation is realized by insulating layer.
As preferred in the present embodiment, teflon material layer is coated on the outer surface of the conductive layer.Teflon material
Bed of material physical property and chemical property are highly stable, have thickness controllable, and wearability is high, and good insulating, corrosion resistance is good, plastic
The advantages that property is strong.
As preferred in the present embodiment, it is provided at least two annular grooves on the outer surface of the hollow body 1, two
A adjacent annular groove, for the first electrode ring in second electrode ring 222 described in the first electrode ring 221/
221 and second electrode ring 222 match.It is matched by annular groove with first electrode ring 221, second electrode ring 222, to be promoted
The integrated molding degree of measuring device 2, and the case where the bring electrode retaining collar that effectively avoids rubbing for a long time falls off.
As preferred in the present embodiment, in second electrode ring 222 described in the first electrode ring 221/ by dispensing with
The hollow body 1 connects.First electrode ring 221, second electrode ring 222 are further fixed by dispensing, firm with connection,
Steady feature.
As preferably, the measuring circuit 21 passes through described in conducting wire and the first electrode ring 221/ in the present embodiment
Second electrode ring 222 is electrically connected, and the conducting wire passes through at least two cable holes opened up on the hollow body 1.By walking
String holes avoids the situation that conducting wire is too long, mixed and disorderly, to keep the globality of measuring device 2 stronger.
As shown in Figure 1-3, the application further relates to a kind of soil moisture sensor, which includes: the soil water
Divide measuring device.In the embodiment of the present application, it by the way of soil moisture measuring, is filled by hollow body 1 and measurement
The cooperation for setting 2 has reached the first electrode ring 221 in measuring device 2, second electrode ring 222 is arranged in parallel in hollow body 1
Surface on measure capacitance, and the purpose of the moisture content value for being converted to soil by measuring circuit 21, to realize
The technical effect of enhancing intensity and plasticity, so solve as PCB electrode poor plasticity and intensity it is inadequate caused by survey
Accuracy of measurement, resolution limitations the technical issues of.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (9)
1. a kind of soil moisture measurement device characterized by comprising the hollow body that is placed in soil and for measuring soil
The measuring device of interior moisture, the measuring device are set on the hollow body,
The measuring device includes: measuring circuit and measuring electrode, and the measuring circuit is connect with the measuring electrode,
The measuring electrode includes: first electrode ring and second electrode ring,
The first electrode ring and the second electrode ring are respectively arranged at the surface of the hollow body, and the first electrode
The parallel position of hollow body surface location where hollow body surface location is located at the second electrode ring where ring；
The measuring circuit in the hollow body respectively with outside the hollow body the first electrode ring and institute
The electric connection of second electrode ring is stated, for the first electrode ring and the second electrode ring measurement in a closed series to be obtained capacitance knot
Fruit is converted into the moisture content value of current soil.
2. soil moisture measurement device according to claim 1, which is characterized in that the hollow body is by nylon material
The cylindrical body of composition.
3. soil moisture measurement device according to claim 1, which is characterized in that the first electrode ring/described second
Electrode retaining collar be it is multiple, be arranged in parallel in the surface of the hollow body respectively.
4. soil moisture measurement device according to claim 1, which is characterized in that the first electrode ring/described second
Electrode retaining collar includes: conductive layer and insulating layer, and the insulating layer is set on the outer surface of the conductive layer.
5. soil moisture measurement device according to claim 4, which is characterized in that sprayed on the outer surface of the conductive layer
There is teflon material layer.
6. soil moisture measurement device according to any one of claim 1 to 5, which is characterized in that the hollow body
Outer surface on be provided at least two annular grooves, two adjacent annular grooves, for the first electrode ring/
First electrode ring and the matching of second electrode ring in the second electrode ring.
7. soil moisture measurement device according to any one of claim 1 to 5, which is characterized in that the first electrode
It is connect by dispensing with the hollow body in ring/second electrode ring.
8. soil moisture measurement device according to any one of claim 1 to 5, which is characterized in that the measuring circuit
It is electrically connected by conducting wire and the first electrode ring/second electrode ring, the conducting wire passes through to be opened on the hollow body
If at least two cable holes.
9. a kind of soil moisture sensor characterized by comprising soil moisture measurement device described in claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820535904.8U CN208188031U (en) | 2018-04-16 | 2018-04-16 | Soil moisture measurement device, sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820535904.8U CN208188031U (en) | 2018-04-16 | 2018-04-16 | Soil moisture measurement device, sensor |
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| Publication Number | Publication Date |
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| CN208188031U true CN208188031U (en) | 2018-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820535904.8U Active CN208188031U (en) | 2018-04-16 | 2018-04-16 | Soil moisture measurement device, sensor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108362745A (en) * | 2018-04-16 | 2018-08-03 | 昆明大蚯蚓科技有限公司 | Soil moisture measurement device, sensor and its manufacturing method |
| CN113655089A (en) * | 2021-07-26 | 2021-11-16 | 中国农业大学 | Soil moisture and water potential distribution synchronous measuring device and measuring method thereof |
-
2018
- 2018-04-16 CN CN201820535904.8U patent/CN208188031U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108362745A (en) * | 2018-04-16 | 2018-08-03 | 昆明大蚯蚓科技有限公司 | Soil moisture measurement device, sensor and its manufacturing method |
| CN113655089A (en) * | 2021-07-26 | 2021-11-16 | 中国农业大学 | Soil moisture and water potential distribution synchronous measuring device and measuring method thereof |
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