Soil moisture content detector

Abstract

The soil moisture content detector comprises an outer shell, a conical head, an end cover and an induction module, the end cover and the conical head are connected with the two ends of the outer shell respectively, a plurality of detection areas are arranged on the outer side of the outer shell, and the induction module is located in the outer shell and communicated with the detection areas. An end fixing plate and a module support used for installing a sensing module are arranged in the outer shell, a limiting plate matched with the inner side of the outer shell is installed at the end, close to the conical head, of the module support, a connecting plate is installed at the end, close to the end cover, of the module support, and the end fixing plate is installed in the end, connected with the end cover, of the outer shell. A channel opening allowing the module support and the limiting plate to enter and exit the outer shell is formed between the outer side of the end fixing plate and the inner side of the outer shell, the module support enters the outer shell through the channel opening, and the connecting plate is connected with the end fixing plate in a matched mode. The device is simple in structure and convenient to disassemble and assemble.

Description

Technical Field

[0001] The utility model relates to the technical field of soil detection, in particular to a soil moisture detector. Background Art

[0002] The soil moisture detector detects data such as the current humidity, temperature and conductivity of the soil environment through a plurality of sensing elements.

[0003] Common soil moisture detectors include an outer housing and a sensing module. The sensing module is installed inside the outer housing, and the sensing elements on the sensing module are communicated with the detection areas on the surface of the outer housing, so as to detect the soil around the outer housing.

[0004] In order to ensure the stability of the connection between the sensing element and the contact point, the sensing module usually needs to be fixed inside the outer housing by gluing. Such a fixing method has low assembly efficiency during the production of the detector, and also increases the difficulty of disassembling and repairing the detector, reducing the repair efficiency. Summary of the Utility Model

[0005] In order to solve the deficiencies of the above-mentioned prior art, the utility model provides a soil moisture detector with a simple structure and convenient disassembly and assembly.

[0006] The technical solution of the utility model is as follows: A soil moisture detector includes an outer housing, a tapered head, an end cover and a sensing module. The end cover and the tapered head are respectively connected to both ends of the outer housing. A plurality of detection areas are arranged on the outer side of the outer housing. The sensing module is located inside the outer housing and is communicated with the detection areas. An end fixing plate and a module bracket for installing the sensing module are arranged inside the outer housing. A limiting plate adapted to the inner side of the outer housing is installed at one end of the module bracket close to the tapered head. A connecting plate is installed at one end of the module bracket close to the end cover. The end fixing plate is installed inside the end of the outer housing connected to the end cover. A channel opening for the module bracket and the limiting plate to enter and exit the outer housing is formed between the outer side of the end fixing plate and the inner side of the outer housing. The module bracket enters the outer housing through the channel opening, and the connecting plate is connected with the end fixing plate in a matching manner. The detector realizes radial limitation inside the outer housing through the limiting plate at the front end of the module bracket, and realizes axial limitation through the connection between the connecting plate at the rear end of the module bracket and the end fixing plate, so as to ensure the stability of the connection between the sensing module on the module bracket and the detection area. There is no need to glue during the assembly process, and the assembly efficiency is high. When disassembling and repairing, only the module bracket and the limiting plate need to be taken out of the outer housing along the channel opening on the outer side of the end fixing plate. The structure is simple, the disassembly and assembly are convenient, and the repair efficiency is high.

[0007] The detection area is a plurality of detection holes arranged at intervals along the length direction of the outer housing. The induction module includes a circuit board and an induction element. The circuit board is installed on the surface of the module bracket, and a plurality of welding terminals are installed on the circuit board. One end of the induction element is connected to the welding terminal, and the other end of the induction element passes through the detection hole. By arranging a plurality of detection holes along the length direction of the outer housing, the detector can detect the soil environment at different depths.

[0008] The induction element includes a metal round cover, a signal ring and a terminal bolt. The terminal bolt passes through the inner side of the signal ring and is locked on the welding terminal. Threaded parts that cooperate with each other are provided on the bottom of the metal round cover and the outer side of the signal ring. The bottom of the metal round cover is fitted and installed on the signal ring, and the top of the metal round cover passes through the detection hole. The design of the induction element can position and install the induction element on the circuit board through the terminal bolt, ensuring the stability of the connection between the induction module and the detection area.

[0009] A circular groove is provided on the outer housing outside the detection hole, and a waterproof ring for sealing the induction element passing through the detection hole is filled in the circular groove. Filling the waterproof ring in the circular groove ensures the waterproof level of the outer edge of the induction element.

[0010] The end fixing plate is a semi-circular fixing plate, and the connecting plate and the end fixing plate are connected by at least two bolts. The semi-circular fixing plate minimizes the channel opening while meeting the requirements for the module bracket and the limit plate to enter and exit.

[0011] Bending parts are provided on both sides of the module bracket, and the outer sides of the bending parts near one end of the end cover are in contact with the outer sides of the end fixing plates. The design of the bending parts can further improve the stability and convenience of the installation of the module bracket.

[0012] One end of the conical head is provided with a plug-in part adapted to the outer housing. The plug-in part is in interference sealing with the outer housing through a sealing ring, and the end cover is threadedly connected to the end of the outer housing.

[0013] A 4G networking module is installed in the end cover. The 4G networking module is electrically connected to the circuit board through a wire, receives the induction signal detected by the circuit board and sends out a communication signal.

[0014] The beneficial effects of the present utility model are as follows:

[0015] In this solution, radial limitation inside the outer housing is achieved through the limit plate at the front end of the module bracket, and axial limitation is achieved through the connection between the connecting plate at the rear end of the module bracket and the end fixing plate, thereby ensuring the stability of the connection between the induction module on the module bracket and the detection area. There is no need to apply glue during the assembly process, and the assembly efficiency is high. When disassembling and repairing, the module bracket and the limit plate can be taken out of the outer housing along the channel opening outside the end fixing plate. The structure is simple, the disassembly and assembly are convenient, and the repair efficiency is high. Brief Description of the Drawings

[0016] Figure 1 is a schematic structural view of the present utility model;

[0017] Figure 2 is an exploded view of the present utility model;

[0018] Figure 3 is a cross-sectional view of the present utility model;

[0019] Figure 4 is Figure 2 a partial enlarged view of A in

[0020] Figure 5 is Figure 2 a partial enlarged view of B in

[0021] Figure 6 is Figure 3 a partial enlarged view of C in

[0022] Reference Numerals: 1, outer housing; 11, detection hole; 12, end fixing plate; 13, annular groove; 2, conical head; 21, insertion part; 3, end cover; 4, module bracket; 41, limiting plate; 42, connecting plate; 43, bending part; 5, circuit board; 6, welding terminal; 7, sensing element; 71, metal round cover; 72, signal ring; 73, terminal bolt; 8, 4G networking module. Detailed Description of the Preferred Embodiment

[0023] To enable those skilled in the art to better understand the technical solutions in the present utility model, the technical solutions in the present utility model will be clearly and completely described below with reference to the accompanying drawings. Other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] As Figures 1 to 6As shown in the figure, the utility model provides a soil moisture detector, which includes an outer shell 1, a conical head 2, an end cover 3 and a sensing module. The end cover 3 and the conical head 2 are respectively connected to both ends of the outer shell 1. A plurality of detection areas are provided on the outer side of the outer shell 1. Preferably, the detection areas are a plurality of detection holes 11 arranged at intervals along the length direction of the outer shell 1. The sensing module is located inside the outer shell 1 and is communicated with the detection holes 11. An end fixing plate 12 and a module bracket 4 for installing the sensing module are provided inside the outer shell 1. A limiting plate 41 adapted to the inner side of the outer shell 1 is installed at one end of the module bracket 4 close to the conical head 2. Preferably, the outer edge of the limiting plate 41 is an arc surface adapted to the inner side of the outer shell 1. A connecting plate 42 is installed at one end of the module bracket 4 close to the end cover 3. The end fixing plate 12 is installed inside the end of the outer shell 1 connected to the end cover 3. A channel opening for the module bracket 4 and the limiting plate 41 to enter and exit the outer shell 1 is formed between the outer side of the end fixing plate 12 and the inner side of the outer shell 1. The module bracket 4 enters the outer shell 1 through the channel opening, and the connecting plate 42 is cooperatively connected with the end fixing plate 12. The radial limit inside the outer shell 1 is carried out through the limiting plate 41 at the front end of the module bracket 4, and the axial limit is realized by the connection between the connecting plate 42 at the rear end of the module bracket 4 and the end fixing plate 12, thereby ensuring the stability of the connection between the sensing module on the module bracket 4 and the detection holes 11. There is no need to apply glue during the assembly process, and the assembly efficiency is high. Moreover, during disassembly and maintenance, only the module bracket 4 and the limiting plate 41 need to be taken out of the outer shell 1 along the channel opening on the outer side of the end fixing plate 12. The structure is simple, the disassembly and assembly are convenient, and the maintenance efficiency is high.

[0025] The end fixing plate 12 is a semi-circular fixing plate, and the connecting plate 42 and the end fixing plate 12 are connected by at least two bolts. The semi-circular fixing plate minimizes the channel opening while meeting the requirements for the module bracket 4 and the limiting plate 41 to enter and exit, thereby ensuring the stability of the installation of the module bracket 4.

[0026] Bending parts 43 are provided on both sides of the module bracket 4, and the outer sides of the bending parts 43 close to the end cover 3 are in contact with the outer side of the end fixing plate 12. Due to the design of the bending parts 43, when the module bracket 4 enters the channel opening, it can slide inside the outer shell 1 along the end cover fixing plate 42, which can further improve the stability and convenience of the installation of the module bracket 4.

[0027] The sensing module includes a circuit board 5 and a sensing element 7. The circuit board 5 is installed on the surface of the module bracket 4. A plurality of welding terminals 6 are installed on the circuit board 5. One end of the sensing element is connected to the welding terminal 6, and the other end of the sensing element 7 passes through the detection hole 11.

[0028] The induction element 7 includes a metal round cover 71, a signal ring 72 and a terminal bolt 73. The terminal bolt 73 passes through the inner side of the signal ring 72 and is locked to the welding terminal 6. Threaded portions that cooperate with each other are provided at the bottom of the metal round cover 71 and the outer side of the signal ring 72. The bottom of the metal round cover 71 is fitted and installed on the signal ring 72, and the top of the metal round cover 71 passes through the detection hole 11. With the design of the induction element 7, the induction element 7 can be positioned and installed on the circuit board 5 via the terminal bolt 73, ensuring the stability of the connection between the induction module and the detection hole 11. Preferably, a plurality of conductive lines are engraved on the circuit board 5, and the induction element 7 and each circuit component on the circuit board 5 are electrically connected through the welding terminal 6, so as to convert the electrical signal received by the induction element 7, such as the magnitude of the resistance value, into a corresponding detection value, such as the soil humidity and the conductivity value. The metal round cover 71 and the signal ring 72 of the induction element 7 form the induction electrode end of the induction element 7. If it is necessary to detect the temperature of the soil, a temperature probe (thermal resistor) can be directly attached to the inner side of the metal round cover 71 through heat-conducting silica gel. The above-mentioned environmental detection principle and related circuits are all prior arts and will not be elaborated here.

[0029] A 4G networking module 8 is installed inside the end cover 3. The 4G networking module 8 is electrically connected to the circuit board 5 via a wire, receives the induction signal detected by the circuit board 5 and emits a communication signal. The principle and circuit of the 4G networking module 8 are prior arts and will not be elaborated here.

[0030] An annular groove 13 is provided on the outer housing 1 outside the detection hole 11, and a waterproof ring for sealing the induction element 7 passing through the detection hole 11 is filled in the annular groove 13. Filling the waterproof ring in the annular groove 13 ensures the waterproof grade at the outer edge of the induction element 7. One end of the tapered head 2 is provided with a plug-in portion 21 adapted to the outer housing 1. The plug-in portion 21 is in interference sealing with the outer housing 1 via a sealing ring, and the end cover 3 is threadedly connected to the end of the outer housing 1. The detachable connection between the tapered head 2 and the end cover 3 and the outer housing 1 is convenient for maintenance, and the sealing of the connection is ensured respectively through the sealing ring and the thread.

[0031] When implementing this technical solution, during the assembly of the detector, the circuit board 5 equipped with the welding terminal 6 is pre-installed in the module bracket 4. The lower end of the module bracket 4 is tilted, and the limiting plate 41 tilts into the channel opening. Then the module bracket 4 is made vertical, and the bent portion 43 of the module bracket 4 slides into the outer housing 1 along the outside of the end fixing plate 12. After the connecting plate 42 at the rear end of the module bracket 4 contacts the end fixing plate 12, it is fixedly connected by bolts to complete the installation of the module bracket 4. The terminal bolt 73, the signal ring 72 and the metal round cover 71 are sequentially connected to the welding terminal 6 through the detection hole 11 to realize the connection between the induction element 7 and the circuit board 5. When maintenance is required, first remove the induction element 7, and then take out the module bracket 4 along the channel opening. The structure of the present utility model is simple and convenient for disassembly and assembly.

Claims

1. A soil moisture detector, comprising an outer shell, a cone head, an end cover and a sensing module, wherein the end cover and the cone head are respectively connected to two ends of the outer shell, a plurality of detection areas are arranged outside the outer shell, and the sensing module is located inside the outer shell and connected to the detection area, characterized in that: An end fixing plate and a module bracket for installing the sensing module are provided in the outer shell, a limit plate adapted to the inner side of the outer shell is installed at one end of the module bracket close to the cone head, a connecting plate is installed at one end of the module bracket close to the end cover, the end fixing plate is installed in one end of the outer shell connected to the end cover, a passage opening for the module bracket and the limit plate to enter and exit the outer shell is formed between the outer side of the end fixing plate and the inner side of the outer shell, the module bracket enters the outer shell through the passage opening, and the connecting plate is connected with the end fixing plate.

2. A soil moisture detector according to claim 1, characterized in that: The detection area is a plurality of detection holes arranged at intervals along the length direction of the outer shell. The sensing module includes a circuit board and a sensing element. The circuit board is mounted on the surface of the module bracket. A plurality of welding terminals are mounted on the circuit board. One end of the sensing element is connected to the welding terminal, and the other end of the sensing element passes through the detection hole.

3. A soil moisture detector according to claim 2, characterized in that: The sensing element includes a metal round cover, a signal ring and a terminal bolt. The terminal bolt passes through the inner side of the signal ring and is locked on the welding terminal. The bottom of the metal round cover and the outer side of the signal ring are provided with mutually matching threaded parts. The bottom of the metal round cover is mounted on the signal ring, and the top of the metal round cover passes through the detection hole.

4. A soil moisture detector according to claim 2, characterized in that: An annular groove is provided on the outer shell outside the detection hole, and the annular groove is filled with a waterproof ring for sealing the sensing element passing through the detection hole.

5. The soil moisture detector according to claim 1, characterized in that: The end fixing plate is a semicircular fixing plate, and the connecting plate and the end fixing plate are connected via at least two bolts.

6. A soil moisture detector according to claim 1, characterized in that: Bending parts are provided on both sides of the module bracket, and the outer side of the bending part close to one end of the end cover contacts the outer side of the end fixing plate.

7. A soil moisture detector according to claim 1, characterized in that: One end of the cone head is provided with an inserting portion adapted to the outer shell, the inserting portion is interference-sealed with the outer shell via a sealing ring, and the end cover is threadedly connected to the end of the outer shell.

8. A soil moisture detector according to claim 2, characterized in that: A 4G networking module is installed in the end cover. The 4G networking module is electrically connected to the circuit board via a wire, receives the induction signal detected by the circuit board and sends a communication signal.

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