CN210665572U - Soil water content information transmission device - Google Patents
Soil water content information transmission device Download PDFInfo
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- CN210665572U CN210665572U CN202020146500.7U CN202020146500U CN210665572U CN 210665572 U CN210665572 U CN 210665572U CN 202020146500 U CN202020146500 U CN 202020146500U CN 210665572 U CN210665572 U CN 210665572U
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- resistance wire
- heating resistance
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Abstract
The utility model provides a soil water content information transmission device, include: a handle housing; the solar panel is arranged on the surface of the handle shell; the solar energy panel, the energy storage unit and the DC-DC converter are sequentially connected, and the wireless signal transmission unit is connected with the DC-DC converter; the columnar insertion part is arranged below the handle shell, is of a hollow structure, and is provided with a plurality of uniformly distributed through holes on the surface; the heating resistance wire and the plurality of temperature sensors are arranged in the handle shell; the heating resistance wire is arranged along the length direction of the handle shell, and two ends of the heating resistance wire are respectively and electrically connected with the DC-DC converter; the temperature sensors are arranged on the surface of the heating resistance wire at intervals along the length direction of the heating resistance wire, and each temperature sensor is connected with the wireless signal transmission unit.
Description
Technical Field
The utility model relates to a soil water content information transmission device.
Background
Soil moisture content is an important basic parameter of agricultural science. The current method for measuring the water content of the soil body comprises the most common weighing method, resistivity method, FDR method and the like. However, these testing methods cannot accurately test the water content of the soil at different depths at the same time.
SUMMERY OF THE UTILITY MODEL
The utility model provides a soil water content information transmission device can effectively solve above-mentioned problem.
The utility model discloses a realize like this:
a soil moisture content information transmission apparatus comprising:
a handle housing;
the solar panel is arranged on the surface of the handle shell;
the solar panel, the energy storage unit and the DC-DC converter are sequentially connected, and the wireless signal transmission unit is connected with the DC-DC converter;
the columnar insertion part is arranged below the handle shell and is of a hollow structure, and a plurality of through holes are uniformly distributed in the surface of the columnar insertion part;
the heating resistance wire and the plurality of temperature sensors are arranged in the handle shell; the heating resistance wire is arranged along the length direction of the handle shell, and two ends of the heating resistance wire are respectively and electrically connected with the DC-DC converter; the temperature sensors are arranged on the surface of the heating resistance wire at intervals along the length direction of the heating resistance wire, and each temperature sensor is connected with the wireless signal transmission unit.
The utility model has the advantages that: the utility model discloses will column insertion portion buries underground in soil, and moisture in soil can pass through inside through-hole infiltration column insertion portion, at this moment, through the DC-DC converter is right the heating resistor silk heats, and set up through the interval in the temperature sensor on heating resistor silk surface is right the surface of heating resistor silk carries out temperature acquisition to pass through radio signal transmission unit with the temperature data who obtains and transmit for external processing unit, external processing unit can be according to the real-time accurate moisture content of the soil of calculating the different degree of depth of temperature data. Additionally, the utility model discloses a solar panel and thereby the energy storage unit can be right soil water content information transmission device supplies power, and need not external or pre-buried circuit, and is convenient soil water content information transmission device's use. Finally, the utility model provides a soil water content information transmission device can the moisture content of real-time detection soil to provide real-time foundation for the condition of irrigating.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic view of a soil water content information transmission device provided by the embodiment of the present invention when in use.
Fig. 2 is a schematic structural diagram of the soil water content information transmission device provided by the embodiment of the utility model.
Fig. 3 is a graph showing the temperature rise of the quartz sand with different water contents in the soil water content information transmission device according to the embodiment of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides a soil moisture content information transmission device 10, comprising:
a handle housing 11;
a solar panel 15 disposed on a surface of the handle case 11;
a DC-DC converter 12, an energy storage unit 13, and a wireless signal transmission unit 14 disposed in the handle housing 11, wherein the solar panel 15, the energy storage unit 13, and the DC-DC converter 12 are sequentially connected, and the wireless signal transmission unit 14 is connected to the DC-DC converter 12;
a cylindrical insertion portion 16 disposed below the handle housing 11, wherein the cylindrical insertion portion 16 has a hollow structure, and a plurality of through holes 161 are uniformly distributed on a surface thereof;
a heating resistance wire 18 and a plurality of temperature sensors 17 arranged in the handle housing 11; the heating resistance wire 18 is arranged along the length direction of the handle shell 11, and two ends of the heating resistance wire are respectively electrically connected with the DC-DC converter 12; the temperature sensors 17 are arranged on the surface of the heating resistance wire 18 at intervals along the length direction of the heating resistance wire 18, and each temperature sensor 17 is connected with the wireless signal transmission unit 14.
As a further improvement, the soil water content information transmission device 10 further comprises fine sand 19 with the grain diameter of 0.25-0.35mm, and the fine sand is filled in the handle shell 11. In this embodiment, the handle shell 11 is filled with fine sand 19 with a standard particle size, so that the heating resistance wire 18 is prevented from directly contacting with external soil, and the influence of different external soils on the detection of the soil water content information transmission device 10 is reduced. In addition, the fine sand 19 can also absorb water and lose water rapidly, so that the water content of the soil can be reflected instantly and rapidly.
As a further improvement, the length of the columnar insertion portion 16 is 0.5 m to 1 m.
As a further improvement, the temperature sensor 17 is arranged on the surface of the heating resistance wire 18 at intervals of 0.2-0.3 m along the length direction of the heating resistance wire 18. Preferably, the distance between the temperature sensors 17 is 0.25m, and the mutual interference can be reduced by setting the distance. The heating resistance wire 18 may further be provided with a heat-conducting insulating silica gel layer (not shown in the figure), which improves the contact performance with water on the one hand and has an insulating effect on the other hand.
As a further improvement, the temperature sensor 17 is a thin film platinum resistance sensor of NB-PTCO-157 type.
As a further improvement, the aperture of the through hole 161 is 0.1-0.2 mm.
As a further improvement, in order to prevent moisture in the upper part of the columnar insertion portion 16 from being left in the lower part through the columnar insertion portion 16 to affect the detection in the lower part, it is preferable that a plurality of partitions 21 are provided in the columnar insertion prevention portion 16, and the temperature sensors 17 are provided in different partition spaces.
The wireless signal transmission unit 14 may be an NB-IoT module, a bluetooth module, a WIFI module, or the like. In this embodiment, the wireless signal transmission unit 14 is an NB-IoT module.
Referring to fig. 1, the soil moisture content information transmission device 10 of the present invention is used by pre-embedding the columnar insertion portion 16 between the furrows 30. Specifically, the soil moisture content information transmission device 10 may be embedded in the furrows 30 in the order of the numbers. Moisture in the soil can permeate into the cylindrical insertion part 16 through the through hole 161, at this moment, the heating resistance wire 18 is heated by supplying power through the DC-DC converter 12, temperature acquisition is carried out on the surface of the heating resistance wire 18 through the temperature sensor 17 arranged on the surface of the heating resistance wire 18 at intervals (due to the fact that the moisture content is different, namely the humidity is different, the temperature of the heating resistance wire is different), the obtained temperature data is transmitted to the external processing unit 20 through the wireless signal transmission unit 14, and the external processing unit 20 can accurately calculate the moisture content of the soil at different depths in real time according to the temperature data.
The processing unit 20 establishes a functional relationship between the temperature data result and the set water content, and then calculates the soil water content according to the functional relationship. Specifically, taking quartz sand with a particle size of about 0.25mm as an example, the temperature rise per unit time (1 minute) of the quartz sand with different water contents was measured under the same heating power, and is shown in the following table and the following fig. 3:
table 1 shows the temperature rise of the quartz sand with different water contents in unit time
| Water content (m)3*m-3) | Temperature difference (. degree. C.) |
| 0.001 | 11.78 |
| 0.05 | 11.11 |
| 0.1 | 9.23 |
| 0.15 | 7.98 |
| 0.2 | 6.13 |
| 0.25 | 4.95 |
| 0.3 | 3.87 |
| 0.35 | 3.66 |
| 0.4 | 3.34 |
Wherein the dry sand (i.e., water content of 0.001 m)3*m-3) The temperature rise in unit time (1 minute) is fastest and reaches 11.78 ℃; and 0.25mm particle size saturated quartz sand (i.e., having a water content of 0.40 m)3*m-3) The temperature rise per unit time (1 minute) was the slowest and reached only 3.34 ℃. It basically satisfies the condition of Δ T35.002 x2-37.341X +12.383, wherein X is the water content.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A soil moisture content information transmission device, comprising:
a handle housing (11);
a solar panel (15) arranged on the surface of the handle shell (11);
a DC-DC converter (12), an energy storage unit (13) and a wireless signal transmission unit (14) which are arranged in the handle shell (11), wherein the solar panel (15), the energy storage unit (13) and the DC-DC converter (12) are sequentially connected, and the wireless signal transmission unit (14) is connected with the DC-DC converter (12);
the cylindrical insertion part (16) is arranged below the handle shell (11), the cylindrical insertion part (16) is of a hollow structure, and the surface of the cylindrical insertion part is provided with a plurality of uniformly distributed through holes (161);
a heating resistance wire (18) and a plurality of temperature sensors (17) which are arranged in the handle shell (11); the heating resistance wire (18) is arranged along the length direction of the handle shell (11), and two ends of the heating resistance wire are respectively and electrically connected with the DC-DC converter (12); the temperature sensors (17) are arranged on the surface of the heating resistance wire (18) at intervals along the length direction of the heating resistance wire (18), and each temperature sensor (17) is connected with the wireless signal transmission unit (14) respectively.
2. The soil moisture content information transmission device as claimed in claim 1, further comprising fine sand having a particle size of 0.25-0.35mm filled in said handle case (11).
3. The soil water content information transmission device according to claim 1, wherein the length of the columnar insertion portion (16) is 0.5 to 1 meter.
4. The soil water content information transmission device according to claim 1, wherein the temperature sensor (17) is arranged on the surface of the heating resistance wire (18) at intervals of 0.2-0.3 m along the length direction of the heating resistance wire (18).
5. The soil water content information transmission device according to claim 1, wherein the temperature sensor (17) is a thin film type platinum resistance sensor of NB-PTCO-157 type.
6. The soil water content information transmission device according to claim 1, wherein the aperture of the through hole (161) is 0.1-0.2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020146500.7U CN210665572U (en) | 2020-01-23 | 2020-01-23 | Soil water content information transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020146500.7U CN210665572U (en) | 2020-01-23 | 2020-01-23 | Soil water content information transmission device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210665572U true CN210665572U (en) | 2020-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020146500.7U Active CN210665572U (en) | 2020-01-23 | 2020-01-23 | Soil water content information transmission device |
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| CN (1) | CN210665572U (en) |
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