A soil sensor

Abstract

The utility model discloses a kind of soil sensors, it is related to the replacement field of soil sensor probe, including controller, the shell bottom end of the controller integrally formed has downward protruding docking ring, the circuit board of the controller is installed with the electrically conductive pin extending to the inside of the docking ring, the inner wall of the docking ring is threadedly connected with screw sleeve, the inner wall of the screw sleeve is fixedly installed with electrically conductive probe, the bottom end of the electrically conductive probe is conical structure, the bottom end of the electrically conductive pin is installed with the elastic conductive mechanism of the electrically conductive probe top contact.The utility model is set by setting elastic conductive mechanism and the screw sleeve connected with electrically conductive probe, when electrically conductive probe appears rust or wear, only need to replace electrically conductive probe, with the advantage of low replacement cost, and the setting of elastic conductive mechanism can avoid the problem of poor contact caused by electrically conductive probe slight loosening.

Description

Technical Field

[0001] This utility model relates to the field of soil sensor probe replacement, specifically a soil sensor. Background Technology

[0002] There are various types of soil sensors, one of which is the resistive soil moisture sensor. It relies on a resistive metal probe inserted into the soil. The soil water content directly determines the soil's conductivity and dielectric constant. After the probe is inserted into the soil, the electrolyte solution (water + dissolved salt) in the soil becomes the "conductive medium," connecting the two probes to form a circuit. The higher the soil water content, the more abundant the electrolyte solution, the stronger the conductivity of the circuit, the smaller the detected resistance, and the greater the conductivity. The sensor outputs the corresponding soil moisture value according to the preset calibration relationship of "resistance-moisture".

[0003] In existing technologies, conductive probes are generally made of metal. As the number of times they are inserted into the soil increases and the usage time increases, wear or corrosion is inevitable, which can lead to device failure and require complete replacement, resulting in high costs. Utility Model Content

[0004] The purpose of this invention is to provide a soil sensor in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a soil sensor, including a controller, wherein the bottom of the controller housing is integrally formed with a downwardly protruding docking ring, and a conductive pin extending into the interior of the docking ring is mounted on the circuit board of the controller. A threaded sleeve is threaded onto the inner wall of the docking ring, and a conductive probe is fixedly mounted on the inner wall of the threaded sleeve. The bottom end of the conductive probe has a conical structure, and an elastic conductive mechanism that contacts the top of the conductive probe is mounted on the bottom end of the conductive pin. An insertion hole for the elastic conductive mechanism to be inserted is provided inside the threaded sleeve.

[0006] As a further embodiment of this utility model: the elastic conductive mechanism includes an upper conductive plate rotatably mounted on the bottom end of the conductive pin and extending into the inside of the screw sleeve, and downwardly extending guide conductive rods slidably mounted on both ends of the upper conductive plate, with a lower conductive plate integrally formed at the bottom end of the guide conductive rods.

[0007] As a further embodiment of this utility model: the elastic conductive mechanism further includes insulating rings fixedly installed at the top of the lower conductive plate and the bottom of the upper conductive plate, and a reset spring that is sleeved with the guide conductive rod is fixedly installed between the two insulating rings.

[0008] As a further improvement of this utility model: both the insulating ring and the outer periphery of the lower conductive plate are integrally formed with outwardly protruding sliding blocks, and the inner wall of the threaded sleeve is provided with a sliding groove for the sliding blocks to slide.

[0009] As a further improvement of this utility model, the sliding groove is connected to the inner cavity of the insertion hole.

[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. By setting up an elastic conductive mechanism and a screw sleeve connected to the conductive probe, when the conductive probe is corroded or worn, only the conductive probe needs to be replaced, which has the advantage of low replacement cost. In addition, the setting of the elastic conductive mechanism can avoid poor contact caused by slight loosening of the conductive probe. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This is a schematic diagram of the elastic conductive mechanism of this utility model.

[0012] In the diagram: 1. Controller; 2. Docking ring; 3. Conductive probe; 4. Conductive pin; 5. Screw sleeve; 6. Insertion hole; 7. Sliding groove; 8. Lower conductive plate; 9. Guide conductive rod; 10. Upper conductive plate; 11. Insulating ring; 12. Return spring; 13. Sliding block. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Please see Figures 1-3 In this embodiment of the utility model, a soil sensor includes a controller 1. The bottom of the housing of the controller 1 is integrally formed with a downwardly protruding docking ring 2. The circuit board of the controller 1 is equipped with conductive pins 4 extending into the interior of the docking ring 2. The inner wall of the docking ring 2 is threadedly connected with a threaded sleeve 5. A conductive probe 3 is fixedly installed on the inner wall of the threaded sleeve 5. The bottom end of the conductive probe 3 has a conical structure. The bottom end of the conductive pin 4 is equipped with an elastic conductive mechanism that contacts the top of the conductive probe 3. The inside of the threaded sleeve 5 is provided with a plug hole 6 for the elastic conductive mechanism to be inserted.

[0015] In this embodiment: when the conductive probe 3 is corroded, by rotating the conductive probe 3, the conductive probe 3 drives the threaded sleeve 5 to rotate, so that the threaded sleeve 5 is completely separated from the docking ring 2. At this time, the elastic conductive mechanism is separated from the conductive probe 3. Then, a new conductive probe 3 of the same model is replaced, and the threaded sleeve 5 on the new conductive probe 3 is threadedly connected to the docking ring 2. During the threaded connection process, the top of the new conductive probe 3 abuts against the elastic conductive mechanism to realize the circuit connection. In subsequent use, if the conductive probe 3 becomes loose, the elastic conductive mechanism can rely on its elastic reset ability to ensure that it is always in contact with the conductive probe 3, avoiding poor contact caused by loosening.

[0016] Please refer to this carefully. Figure 2 and Figure 3 The elastic conductive mechanism includes an upper conductive plate 10 rotatably mounted on the bottom end of the conductive pin 4 and extending into the inside of the screw sleeve 5. Guide conductive rods 9 extending downward are slidably mounted on both ends inside the upper conductive plate 10. A lower conductive plate 8 is integrally formed at the bottom end of the guide conductive rods 9. The elastic conductive mechanism also includes an insulating ring 11 fixedly mounted on the top end of the lower conductive plate 8 and the bottom end of the upper conductive plate 10. A reset spring 12, which is sleeved with the guide conductive rod 9, is fixedly mounted between the two insulating rings 11.

[0017] In this embodiment: the new conductive probe 3 drives the threaded sleeve 5 on it to connect with the mating ring 2. The upward-screwed threaded sleeve 5 drives the conductive probe 3 to move upward synchronously and gradually approach the lower conductive plate 8 until it contacts and generates pressure. At this time, the lower conductive plate 8 pushes the guide conductive rod 9 to move upward and compresses the reset spring 12 until the threaded sleeve 5 is fully tightened. After the device is powered on, the current can be released through the conductive probe 3. If the threaded sleeve 5 is loose, the reset spring 12 can push the lower conductive plate 8 to move downward, keeping it in contact with the top of the conductive probe 3 at all times, so as to avoid poor contact caused by loosening.

[0018] Please refer to this carefully. Figure 2 and Figure 3 The insulating ring 11 and the outer periphery of the lower conductive plate 8 are both integrally formed with outwardly protruding sliding blocks 13. The inner wall of the screw sleeve 5 is provided with a sliding groove 7 for the sliding block 13 to slide. The sliding groove 7 is connected to the inner cavity of the insertion hole 6.

[0019] In this embodiment: after the conductive probe 3 and the screw sleeve 5 are completely removed, the conductive plate 8 is pushed to move completely outside the docking ring 2 under the reset force of the reset spring 12. Therefore, when the screw sleeve 5 is connected, the sliding groove 7 on the inner circumference of the screw sleeve 5 can be visually docked with the sliding block 13 located below the docking ring 2.

[0020] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A soil sensor comprising a controller (1), characterized in that The bottom of the housing of the controller (1) is integrally formed with a downward protruding docking ring (2). The circuit board of the controller (1) is equipped with conductive pins (4) extending into the docking ring (2). The inner wall of the docking ring (2) is threaded with a threaded sleeve (5). The inner wall of the threaded sleeve (5) is fixedly installed with a conductive probe (3). The bottom end of the conductive probe (3) is conical. The bottom end of the conductive pin (4) is equipped with an elastic conductive mechanism that contacts the top of the conductive probe (3). The inside of the threaded sleeve (5) is provided with a plug hole (6) for the elastic conductive mechanism to be inserted.

2. A soil sensor according to claim 1, wherein, The elastic conductive mechanism includes an upper conductive plate (10) rotatably mounted on the bottom end of the conductive pin (4) and extending into the inside of the screw sleeve (5). The upper conductive plate (10) has downwardly extending guide conductive rods (9) slidably mounted at both ends inside. The bottom end of the guide conductive rods (9) is integrally formed with a lower conductive plate (8).

3. A soil sensor according to claim 2, wherein, The elastic conductive mechanism also includes an insulating ring (11) fixedly installed at the top of the lower conductive plate (8) and the bottom of the upper conductive plate (10), and a reset spring (12) that is sleeved with the guide conductive rod (9) is fixedly installed between the two insulating rings (11).

4. A soil sensor according to claim 3, wherein, The insulating ring (11) and the outer periphery of the lower conductive plate (8) are both integrally formed with outwardly protruding sliding blocks (13), and the inner wall of the screw sleeve (5) is provided with sliding grooves (7) for the sliding blocks (13) to slide.

5. A soil sensor according to claim 4, characterized in that, The sliding groove (7) is connected to the inner cavity of the insertion hole (6).

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