CN215263482U - FDR-based wireless soil moisture content detection device - Google Patents

Abstract

The application provides a wireless soil moisture content detection device based on FDR includes: a plurality of probes, an outer housing, a circuit board, a battery pack, a capacitor and an antenna assembly; wherein the probe is fixedly connected to the outer housing; the circuit board, battery pack, capacitor and antenna assembly are disposed inside the outer case; the probes are arranged in parallel and are all parallel to a first direction; in the first direction, the circuit board is disposed between the probe and the battery pack. The wireless soil moisture content detection device based on the FDR has the advantages that the wireless soil moisture content detection device based on the FDR is reasonable and reliable in structure, and the space positions of the parts are reasonably distributed.

Description

FDR-based wireless soil moisture content detection device

Technical Field

The application relates to a wireless soil moisture content detection device based on FDR.

Background

The soil moisture content refers to the moisture condition of soil. The soil humidity is the dry and wet degree of soil, namely the actual water content of the soil, and can be represented by the ratio of soil water to the dried soil weight or the soil volume, or the relative quantity such as the percentage of the soil water content equivalent to the field water capacity, or the percentage relative to the saturated water capacity.

The existing soil moisture content and other parameter detection devices generally adopt a corresponding detection head with a probe or other detection elements to be inserted into soil for detection. In addition, the existing wireless soil moisture content detection devices based on FDR all work by adopting wired power supply or wired power transmission. This is very detrimental to the field detection environment and is not suitable for long-term monitoring.

Disclosure of Invention

In order to solve prior art's weak point, the application provides a wireless soil moisture content detection device based on FDR, includes: a plurality of probes, an outer housing, a circuit board, a battery pack, a capacitor and an antenna assembly; wherein the probe is fixedly connected to the outer housing; the circuit board, battery pack, capacitor and antenna assembly are disposed inside the outer case; the probes are arranged in parallel and are all parallel to a first direction; in the first direction, the circuit board is disposed between the probe and the battery pack.

Further, the circuit board is disposed between the probe and the capacitor.

Further, the circuit board is disposed between the probe and the antenna assembly.

Further, the battery pack, capacitor and antenna assembly are located on the same side of the circuit board.

Further, the probes are arranged in a second direction; the capacitor is disposed side by side with the battery pack in the second direction.

Further, a direction perpendicular to both the first direction and the second direction is defined as a third direction in which the battery pack and the capacitor are located on the same side of the antenna assembly.

Further, a projection plane perpendicular to the first direction is defined as a first projection plane, and a projection of the battery pack and the capacitor in the first projection plane is located inside a projection of the circuit board in the first projection plane.

Further, a projection plane perpendicular to the second direction is defined as a second projection plane, and a projection of the capacitor in the second projection plane is located inside a projection of the battery pack in the second projection plane.

Further, a projection plane perpendicular to the third direction is defined as a third projection plane, and a projection of the capacitor on the third projection plane at least partially overlaps with a projection of the antenna assembly on the third projection plane.

Further, the projection of the battery pack on the third projection plane at least partially overlaps with the projection of the antenna assembly on the third projection plane.

The application has the advantages that: the wireless soil moisture content detection device based on the FDR is reasonable and reliable in structure and reasonably distributes the space positions of components.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:

FIG. 1 is a schematic perspective view of an FDR-based wireless soil moisture content detection device according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of the FDR based wireless soil moisture content detection device of FIG. 1 from a first perspective;

FIG. 3 is a schematic view of the FDR based wireless soil moisture content detection device of FIG. 1 from a second perspective;

FIG. 4 is a schematic view of the FDR based wireless soil moisture content detection device of FIG. 1 viewed from a second perspective;

FIG. 5 is a schematic view of the FDR based wireless soil moisture content detection device of FIG. 1 from a third perspective;

FIG. 6 is a schematic structural diagram of an outer casing of the FDR-based wireless soil moisture content detection device of the embodiment shown in FIG. 1;

FIG. 7 is a schematic structural view of the outer housing of the FDR based wireless soil moisture content detection device of FIG. 1 from another perspective;

FIG. 8 is a schematic diagram illustrating the FDR based wireless soil moisture content detection device of FIG. 1 after the removal of the outer housing;

FIG. 9 is a schematic view of the structure of FIG. 8 with a portion of the inner housing, etc., removed;

FIG. 10 is a schematic view of the structure of FIG. 8 with another portion of the inner housing removed;

FIG. 11 is a schematic diagram of the structure of FIG. 8 after removal of the probes;

FIG. 12 is a schematic view of a portion of an inner housing of the FDR based wireless soil moisture detection device of FIG. 1;

FIG. 13 is a schematic view of another portion of the inner housing of the FDR based wireless soil moisture content detecting device of FIG. 1;

FIG. 14 is a schematic view of the FDR based wireless soil moisture detection device of FIG. 1 after the removal of the outer and inner housings;

FIG. 15 is a schematic view of the structure of FIG. 13 from the other side;

FIG. 16 is a schematic view of the structure of FIG. 13 from another angle;

FIG. 17 is a schematic view of the structure of FIG. 13 from an angle parallel to the probes;

FIG. 18 is a schematic view of the structure of FIG. 13 from a perpendicular angle to the probe;

FIG. 19 is a schematic structural view of the probe, the cover and the circuit board of the FDR-based wireless soil moisture content detection device of FIG. 1;

FIG. 20 is a schematic view of the probe and circuit board of the FDR based wireless soil moisture content detection device of FIG. 1;

FIG. 21 is a schematic view of the structure of FIG. 20 from another perspective;

FIG. 22 is a schematic view of a portion of the components of the structure shown in FIG. 20;

FIG. 23 is a schematic view of a cover of the FDR based wireless soil moisture detection device of FIG. 1;

fig. 24 is a schematic view illustrating another angle of the cover of the FDR-based wireless soil moisture content detecting device of fig. 1.

The meaning of the symbols in the drawings:

the FDR-based wireless soil moisture content detection device 100, a body portion 10, a detection portion 20, a probe 101, an outer housing 102, a housing cavity 1021, an outer mounting screw hole 1022, a closure wall 1023, a side wall 1024, an arc-shaped wall 1025, a glue post through hole 1026, an outer lamp hole 1027, a cover 103, a sealing groove 1031, a cover hole 1032, an inner mounting screw hole 1033, a positioning post 1034, a post screw hole 1035, a reinforcing rib 1036, an inner housing 104, an inner housing screw hole 1041, a limiting rib 1042, a button through hole 1043, an inner lamp hole 1044, a first circuit board 105, a positioning through hole 1051, a conductive region 1052, a positioning notch 1053, a second circuit board 106, a plate hole 1061, a battery pack 107, an arc-shaped surface 1071, a capacitor 108, a capacitor 109, a first antenna portion 1091, a second antenna portion 1092, a reflective surface 1093, a separation slot antenna assembly 1094, a button switch 110, a protective rubber sleeve 111, a button rubber post 112, an indicator light 113, a control chip 114, a mounting bolt 115, a separation sealing member 116, a positioning bolt 117, a locking nut 118, a first connection terminal 119, a second connection terminal 120, a connection cable 121;

the first direction D1, the second direction D2, the third direction D3, the first projection surface T1, the second projection surface T2 and the third projection surface T3;

dimension in the first direction: a probe portion L1, a main body portion L2, a battery pack L3, a capacitor L4, an antenna assembly L5;

dimension in the second direction: a probe part W1, a main body part W2, a battery pack W3, a capacitor W4, an antenna assembly W5, and a probe indirect W6;

and the plane P where the revolution axis of the revolution body surface and the central axis of the cylindrical surface are located.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Referring to fig. 1 to 24, the FDR-based wireless soil moisture content detection apparatus of the present application includes: the probe, shell body, closing cap, interior casing, first circuit board, second circuit board, group battery, condenser, antenna module, button switch, protection gum cover, button glue post, pilot lamp, control chip, construction bolt, interval sealing member, positioning bolt, lock nut, first connecting terminal, second connecting terminal, connecting cable.

Wherein, a plurality of probes are fixedly connected to the outer shell; the circuit board and the battery pack are accommodated inside the outer case; the whole body formed by the outer shell, the circuit board and the battery pack is defined as a main body part; the part of the probe outside the main body part is defined as a detection part; the probes are arranged in parallel and are all parallel to the first direction; the ratio of the maximum size of the detecting part to the maximum size of the main body part in the first direction ranges from 0.5 to 1.0. As a further preferred option, the ratio ranges from 0.55 to 0.67, more specifically the ratio is 0.67.

As a specific scheme, the probes are arranged along the second direction, and the ratio of the maximum size of the detecting part to the maximum size of the main body part in the second direction ranges from 0.4 to 0.8. As a further preferred option, the ratio ranges from 0.55 to 0.60, more specifically the ratio is 0.579.

As a specific solution, the ratio of the distance between the probes in the second direction to the maximum size of the detecting part in the first direction ranges from 0.15 to 0.6. As a further preferred embodiment, the ratio ranges from 0.2 to 0.35, more specifically the ratio is 0.299.

As a specific solution, a ratio of a distance between the probes in the second direction to a maximum dimension of the detecting part in the second direction ranges from 0.225 to 0.9. As a further preferred option, the ratio ranges from 0.4 to 0.5, more specifically the ratio is 0.451.

As a specific scheme, the number of the probes is 3, and the probes on two sides are symmetrically arranged relative to the middle probe.

As a specific solution, the ratio of the maximum size of the detecting portion in the first direction to the maximum size of the detecting portion in the second direction ranges from 0.9 to 4. As a further preferred option, the ratio ranges from 1.3 to 1.6, more specifically the ratio is 1.51.

As a specific scheme, the value range of the maximum dimension ratio of the detection part to the battery pack in the first direction is 0.65 to 2. As a further preferred option, the ratio ranges from 1.2 to 1.6, more specifically the ratio is 1.361.

Specifically, the maximum dimension ratio of the main body portion to the battery pack in the second direction ranges from 1.6 to 4.5. As a further preferred option, the ratio ranges from 3 to 3.5, more specifically the ratio is 3.247.

Specifically, the maximum size ratio of the capacitor to the main body in the first direction ranges from 0.1 to 0.4. As a further preferred option, the ratio ranges from 0.15 to 0.2, more specifically the ratio is 0.196.

As a concrete scheme, FDR-based wireless soil moisture content detection device still includes: an antenna assembly; the antenna component is accommodated in the shell and electrically connected with the circuit board; the ratio of the maximum size of the antenna component to the main body part in the first direction ranges from 0.1 to 0.5. As a further preferred option, the ratio ranges from 0.3 to 0.4, more specifically the ratio is 0.362.

Known by the experiment, the probe is too long easy to be broken off, and too short influences the detection effect easily, and other parts such as same shell body also have the demand that needs size balance, above to the design of this application based on each part size of FDR's wireless soil moisture content detection device the realization of detection function and portable and demand buried underground have been taken into account.

As another aspect of the present application, the probe is fixedly connected to the outer housing; the circuit board, the battery pack, the capacitor and the antenna assembly are arranged inside the outer shell; the probes are arranged in parallel and are all parallel to the first direction; in the first direction, the circuit board is disposed between the probe and the battery pack.

As a specific solution, the circuit board is disposed between the probe and the capacitor.

As a specific solution, the circuit board is disposed between the probe and the antenna assembly.

As a specific solution, the battery pack, the capacitor and the antenna assembly are located on the same side of the circuit board.

As a specific scheme, the probes are arranged along the second direction; the capacitor is disposed side by side with the battery pack in the second direction.

As a specific solution, a direction perpendicular to both the first direction and the second direction is defined as a third direction in which the battery pack and the capacitor are located on the same side of the antenna assembly.

As a specific solution, a projection plane perpendicular to the first direction is defined as a first projection plane, and a projection of the battery pack and the capacitor in the first projection plane is located inside a projection of the circuit board in the first projection plane.

As a specific solution, a projection plane perpendicular to the second direction is defined as a second projection plane, and a projection of the capacitor in the second projection plane is located inside a projection of the battery pack in the second projection plane.

As a specific solution, a projection plane perpendicular to the third direction is defined as a third projection plane, and a projection of the capacitor on the third projection plane at least partially overlaps with a projection of the antenna component on the third projection plane.

Specifically, the projection of the battery pack on the third projection plane is at least partially overlapped with the projection of the antenna assembly on the third projection plane.

By adopting the scheme, all parts are arranged in a three-dimensional space more three-dimensionally, so that the occupied space is optimized more. Particularly, the battery pack and the circuit board are arranged in a manner that the wireless soil moisture content detection device based on the FDR is convenient to embed integrally.

As another aspect of the present application, wherein the outer case is formed with an outer case cavity, the outer case is configured to have an opening at one end of the outer case cavity, and the cover is fixedly connected to the outer case to close the opening of the outer case cavity; the inner shell encloses an inner shell space, and the circuit board and the battery pack are arranged in the inner shell space; the probes are fixedly connected to the sealing cover and electrically connected with the circuit board.

In a particular embodiment, the outer housing is configured as a closed structure at the open opposite end of the housing cavity, the closed structure comprising at least one closed wall.

As a specific scheme, the probes are arranged in parallel and are all parallel to the first direction, and the opening and the closed wall of the outer shell are arranged at two opposite ends along the first direction.

As a specific scheme, a projection plane perpendicular to the first direction is defined as a first projection plane, and a projection of the outer shell on the first projection plane is in a waist shape.

As a specific scheme, the projections of the opening of the outer shell and the cover on the first projection plane are waist-shaped and are superposed with each other.

According to the specific scheme, a sealing groove is formed in the periphery of the sealing cover, and an edge sealing ring or edge sealing filler is arranged in the sealing groove.

Specifically, the cover is provided with a cover hole penetrating along the first direction, and the probe penetrates through the cover hole and extends into the inner shell space.

Specifically, the outer diameter of the probe is equal to or larger than the diameter of the hole of the cover. Specifically, the cover can be made of a plastic material, and the probe and the cover can form an interference fit through the elasticity of the plastic material. Alternatively, a waterproof glue may be added to the cover hole to achieve the waterproof effect.

As a specific scheme, a plurality of inner mounting screw holes are formed in the periphery of the sealing cover; the outer shell is provided with a plurality of outer mounting screw holes at positions corresponding to the inner mounting screw holes; the mounting bolt passes through the outer mounting screw hole and is screwed into the inner mounting screw hole.

As a specific solution, a spacer seal is provided between the cover and the inner housing.

The design of adopting double shell and closing cap, especially the mode of probe installation makes the shell body of this application have better sealed effect, and interior casing is better fixes a position internal component.

As another aspect of the present application, the outer case is formed with a case cavity, the outer case is configured to have an opening at one end of the case cavity, and the cover is fixedly coupled to the outer case to close the opening of the case cavity; the plurality of probes are arranged in parallel and are all parallel to a first direction, and the first circuit board and the second circuit board are arranged at a certain distance along the first direction; the probe penetrates through the sealing cover along the first direction and is fixedly connected to the first circuit board and electrically connected with the second circuit board.

As a specific scheme, the first circuit board and the second circuit board are arranged in parallel and are perpendicular to the extending direction of the probe. It should be noted that, the first circuit board is provided with a positioning notch, and the positioning notch is matched with the inner shell to prevent the first circuit board from being reversely mounted.

As a specific scheme, a positioning column is formed on the sealing cover, and a positioning through hole for the positioning column to penetrate through is formed in the first circuit board.

As a specific scheme, the second circuit board is provided with a board hole, the positioning column is provided with a column screw hole, and the positioning bolt passes through the board hole of the second circuit board and is screwed into the column screw hole so that the second circuit board is fixed to the positioning column.

Specifically, the probe is provided with external threads at the inner end of the sealing cover, and the locking nut is connected to the probe at the inner end of the sealing cover through the external threads of the probe.

Specifically, the first circuit board is at least partially disposed between the cover and the locking nut.

As a specific solution, the lock nut is disposed between the first circuit board and the second circuit board.

As a specific scheme, the first circuit board is provided with a plurality of conductive areas, and the locking nut is in contact with the conductive areas so that the probes are electrically connected with the printed circuit of the first circuit board.

As a specific scheme, the first circuit board is connected with a first connection terminal, the second circuit board is connected with a second connection terminal, and the first connection terminal forms a physical connection so that the printed circuits of the first circuit board and the second circuit board form an electrical connection.

As a specific scheme, the battery pack is electrically connected to the second circuit board. The antenna component and the capacitor are also electrically connected to the second circuit board.

By adopting the technical scheme, the first circuit board is used for electrically connecting the probes, and the second circuit board is used for connecting control circuits such as the control chip, so that the three-dimensional space occupied by the circuit board is effectively reduced, and the whole wireless soil moisture content detection device based on the FDR is relatively small and exquisite.

It should be noted that, in the present application, a circuit board may refer to either a first circuit board or a second circuit board or a set of them.

Preferably, the cover is made lightweight by making the reinforcing ribs hollow. Waterproof glue can be added between the reinforcing ribs to ensure the waterproof effect.

As another aspect of the present application, the probes are arranged in parallel and are all parallel to the first direction; the antenna assembly has at least one reflecting surface arranged parallel to the first direction.

As a concrete scheme, the shell body is provided with two side walls which are arranged in parallel, and the reflecting surface of the antenna component is close to and arranged in parallel with one side wall.

Specifically, the outer shell is provided with two arc-shaped walls which are oppositely arranged, and at least one part of the antenna assembly extends along the bending direction of the arc-shaped walls in a bending mode.

As a concrete scheme, the one end of shell body is equipped with the uncovered, and the other end is equipped with the enclosure wall, and the antenna module setting is in the position department that is close to the enclosure wall.

As a specific scheme, the probes are arranged along the second direction; the antenna assembly includes: the antenna comprises a first antenna part and a second antenna part, wherein the size of the first antenna part is smaller than that of the second antenna part in the second direction.

As a specific scheme, a direction perpendicular to both the first direction and the second direction is defined as a third direction, and a projection plane perpendicular to the third direction is defined as a third projection plane; the projection of the first antenna part on the third projection plane is overlapped with the projection of the battery pack on the third projection plane.

Specifically, the projection of the second antenna unit on the third projection surface is located outside the projection of the battery pack on the third projection surface.

Specifically, the antenna assembly includes a conductive cloth provided with a separation slit so that the conductive cloth is divided into two parts belonging to the first antenna part and the second antenna part.

As a specific scheme, the battery pack is arranged inside the inner shell; the inner housing is disposed inside the outer housing, and the antenna assembly is at least partially located between the inner housing and the outer housing.

Specifically, the antenna assembly is electrically connected to the second circuit board through a connection cable.

By adopting the scheme to arrange the antenna assembly, a better wireless communication effect can be obtained.

As another aspect of this application, the shell body is equipped with gluey post through-hole, and button switch is connected to the circuit board, and the button is glued the post and is partly set up at least in gluing the post through-hole, and the protection gum cover is partly at least to be connected to the shell body so that the protection gum cover covers the button and glues the post.

As a concrete scheme, the indicating lamp and the circuit board form electric connection, the shell is provided with an outer lamp hole, and at least part of the indicating lamp is arranged in the outer lamp hole.

The probe parallel arrangement just all is on a parallel with the first direction, and the shell body is equipped with two parallel arrangement lateral walls, the parallel first direction of lateral wall, and the protection gum cover is attached to the outside of lateral wall.

The protective rubber sleeve is rotationally connected with the side wall. The battery pack is arranged inside the inner shell; the inner shell is arranged inside the outer shell, and a button through hole which is at least used for the button switch to pass through is formed in the position, corresponding to the button switch, of the inner shell. The inner shell is also provided with an inner lamp hole for the indicator lamp to pass through.

The circuit board includes first circuit board and second circuit board, and the second circuit board sets up between first circuit board and group battery, and button switch fixed connection is to the second circuit board. Probe parallel arrangement just all is on a parallel with the first direction, and in the first direction, the one end of shell body is equipped with uncovered, and the other end is equipped with the enclosure wall, glues the post through-hole setting and is being close to uncovered position.

An opening is formed in one end of the outer shell, and the sealing cover is fixedly connected to the outer shell to seal the opening of the outer shell; the probes are arranged in parallel and are all parallel to the first direction, and the glue column through holes are arranged at the positions close to the sealing cover in the first direction. The shell body is equipped with two relative arc walls that set up, and the probe is arranged along the second direction, and on the second direction, two arc walls are glued post through-hole symmetry setting relatively.

Based on above scheme, make this application based on FDR's wireless soil moisture content detection device have the better interface of controlling of water-proof effects.

As another aspect of the present application, wherein the probes are disposed in parallel and fixedly connected to the outer housing; the circuit board and the battery pack are arranged inside the outer shell; the length direction of the probe is parallel to the length direction of the outer shell.

As a specific scheme, the length direction of the probe is perpendicular to the length direction of the circuit board.

As a concrete scheme, FDR-based wireless soil moisture content detection device still includes: a capacitor; the capacitor is arranged in the outer shell, and the length direction of the capacitor is parallel to the length direction of the battery pack.

As a specific scheme, the number of the probes is 3, and the other two probes are symmetrically arranged relative to the probe positioned in the middle.

Specifically, the battery pack has at least one surface of revolution, and the axis of revolution of the surface of revolution is parallel to the longitudinal direction of the probe.

As a specific scheme, the battery pack at least comprises more than two battery cell units, and the length direction of the battery cell units is parallel to the length direction of the probe.

Specifically, the capacitor has at least one cylindrical surface, and the central axis of the cylindrical surface is parallel to the length direction of the probe.

As a specific scheme, the probes are arranged along the second direction, and the plane where the rotation axis of the surface of the rotator and the central axis of the cylindrical surface are located is obliquely intersected with the second direction.

Specifically, the outer shell is provided with two arc-shaped walls which are oppositely arranged, the revolving body surface of the battery assembly and one of the arc-shaped walls have the same bending direction, and the part of the battery assembly forming the revolving body surface is at least partially arranged in the space surrounded by the arc-shaped walls.

Specifically, the surface of revolution of the capacitor has the same bending direction with one of the arc-shaped walls, and at least one part of the capacitor is positioned in the space surrounded by the other arc-shaped wall.

As a further preferred scheme, a plurality of limiting ribs are arranged on the inner side of the inner shell to fix the positions of the circuit board, the battery pack and the capacitor.

Technical scheme more than adopting can make the wireless soil moisture content detection device based on FDR's of this application whole appearance relatively be suitable for the landfill, and the design of waist shape makes condenser and electric core unit all obtain effectively fixedly simultaneously.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. The utility model provides a wireless soil moisture content detection device based on FDR which characterized in that:

FDR-based wireless soil moisture content detection device includes: a plurality of probes, an outer housing, a circuit board, a battery pack, a capacitor and an antenna assembly;

wherein the probe is fixedly connected to the outer housing; the circuit board, battery pack, capacitor and antenna assembly are disposed inside the outer case;

the probes are arranged in parallel and are all parallel to a first direction; in the first direction, the circuit board is disposed between the probe and the battery pack.

2. The FDR-based wireless soil moisture content detecting device of claim 1, wherein:

the circuit board is disposed between the probe and the capacitor.

3. The FDR-based wireless soil moisture content detecting device of claim 2, wherein:

the circuit board is disposed between the probe and the antenna assembly.

4. The FDR-based wireless soil moisture content detection device of claim 3, wherein:

the battery pack, capacitor and antenna assembly are located on the same side of the circuit board.

5. The FDR-based wireless soil moisture content detection device of claim 4, wherein:

the probes are arranged along a second direction; the capacitor is disposed side by side with the battery pack in the second direction.

6. The FDR-based wireless soil moisture content detection device of claim 5, wherein:

a direction perpendicular to both the first direction and the second direction is defined as a third direction in which the battery pack and the capacitor are both located on the same side of the antenna assembly.

7. The FDR-based wireless soil moisture content detection device of claim 6, wherein:

defining a projection plane perpendicular to the first direction as a first projection plane, wherein the projection of the battery pack and the capacitor in the first projection plane is positioned inside the projection of the circuit board in the first projection plane.

8. The FDR-based wireless soil moisture content detection device of claim 6, wherein:

defining a projection plane perpendicular to the second direction as a second projection plane, a projection of the capacitor in the second projection plane being located inside a projection of the battery pack in the second projection plane.

9. The FDR-based wireless soil moisture content detection device of claim 6, wherein:

defining a projection plane perpendicular to the third direction as a third projection plane, a projection of the capacitor on the third projection plane at least partially overlapping a projection of the antenna assembly on the third projection plane.

10. The FDR-based wireless soil moisture content detecting device of claim 9, wherein:

and the projection of the battery pack on the third projection plane is at least partially overlapped with the projection of the antenna assembly on the third projection plane.

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