Soil moisture content detection device

Abstract

The utility model discloses a soil moisture content detection device, which belongs to the technical field of soil detection and comprises a detection support frame used for supporting a soil moisture content detection process, a motor is mounted at the bottom of the detection support frame, and an output shaft of the motor is connected with a rotating shaft through a coupler. A rotary knob is connected to the end, away from the motor, of the rotating shaft, a fluted disc is connected to the periphery of the rotating shaft, a first rack and a second rack are symmetrically connected to the periphery of the fluted disc in a meshed mode, moving blocks are welded to one end of the first rack and one end of the second rack correspondingly, and gathering plates are connected to the side faces of the moving blocks; a second sliding groove is formed in the bottom of the detection supporting frame, the movable block slides in the second sliding groove, a fixing plate is welded to the bottom of the detection supporting frame, a guide rod is connected to the side face of the fixing plate, and a hole matched with the guide rod for sliding is formed in one end of a gathering plate. Signal errors are reduced, and detection efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to soil detection technical field, especially a kind of soil moisture content detection device. BACKGROUND

[0002] Soil moisture content is a key parameter in many fields such as agricultural production, water conservancy project, geological research. The traditional soil moisture content detection method such as drying method, although high precision, but cumbersome operation, time-consuming, difficult to meet the needs of rapid, real-time detection. The existing soil moisture content detection device can meet the basic detection needs, but the soil moisture content detection device has weak soil gathering ability, which can cause signal error due to insufficient soil contact and reduce detection efficiency.

[0003] After searching, Chinese patent document (authorized announcement number CN215894604U), the utility model discloses a kind of detection devices for soil moisture content determination, including detector main body and the handle connected with detector main body by connecting line, the bottom of the handle is equipped with integral end block, and the bottom of end block is equipped with integral plug-in block, the bottom of plug-in block is provided with detection probe, the side surface of detector main body is provided with sleeve, plug-in block is inserted to the inside of sleeve, and detection probe penetrates to the bottom of sleeve;By setting end block, plug-in block, sleeve, bottom sheath and clamping mechanism, so that soil moisture content detector in carrying process, operator can be clamped together with end block and sleeve, and the bottom end of detection probe is inserted to the inside of bottom sheath, so that handle and detection probe are well placed and protected, to avoid damage to detection probe in subsequent carrying process, detection probe can also avoid damage to external objects, the soil moisture content detection device can meet the basic detection needs, but the soil moisture content detection device has weak soil gathering ability, which can cause signal error due to insufficient contact and reduce detection efficiency. UTILITY MODEL CONTENT

[0004] The utility model aims to provide a kind of soil moisture content detection device, to solve the problems raised in the background art.

[0005] In order to achieve the above object, the utility model provides the following technical scheme: a soil moisture content detection device, including the detection support frame for supporting soil moisture content detection procedure, the bottom of detection support frame is installed motor, the output shaft of motor is connected with rotating shaft through the shaft coupling, the end of rotating shaft away from motor is connected with knob, the outer periphery of rotating shaft is connected with toothed disc, the outer periphery of toothed disc is connected with first rack and second rack in symmetry, one end of first rack and second rack is welded with moving block, the side of moving block is connected with gather board, the bottom of detection support frame is provided with second sliding slot, the moving block slides in the inside of second sliding slot, the bottom of detection support frame is welded with fixed plate, the side of fixed plate is connected with guide rod, one end of gather board is provided with the hole of cooperation sliding with guide rod.

[0006] Preferably, the top of the detection support frame is provided with a display and communication part for soil moisture content detection value display and communication with external equipment, and the bottom of the display and communication part is connected with a microprocessor.

[0007] Preferably, the end of the microprocessor away from the display and communication part is provided with a protective shell, the inside of the protective shell is provided with a detection rod, and the outer periphery of the protective shell is provided with a detection hole.

[0008] Preferably, the outer periphery of the gather board is slidably connected with a special-shaped limiting block, and the side of the special-shaped limiting block is provided with a limiting rod.

[0009] Preferably, the bottom of the gather board, the detection rod and the special-shaped limiting block are all tapered metal materials.

[0010] Preferably, the lateral inner wall of the detection support frame is provided with a first sliding slot, and the first rack is slidably installed in the inside of the first sliding slot.

[0011] Compared with the prior art, the utility model has the following technical effects and advantages:

[0012] The soil moisture content detection device, thanks to the structure of the gather board, the motor drives the rotating shaft and the knob to rotate, the rotating shaft drives the toothed disc to rotate, the knob drives the first rack and the second rack to move along the direction of the first sliding slot, the first rack and the second rack drive the moving block and the gather board to move towards the protective shell, the gather board is gathered towards the protective shell under the action of the first sliding slot, the second sliding slot and the guide rod, the cohesion between soil particles is increased, compared with the traditional soil moisture content detection device, the structure can make the soil contact more fully, reduce the signal error, and improve the detection efficiency.

[0013] The soil moisture content detection device, thanks to the structure of the limiting rod, the limiting rod can increase the stability of the gathering plate when moving, prevent the gathering plate from deviating when moving, thereby reducing the risk of device damage and increasing the soil gathering efficiency.

[0014] The soil moisture content detection device, thanks to the structure of the knob, when encountering hard soil, the knob can be rotated using external force, increasing the gathering ability of the gathering plate to the soil. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0016] Figure 1 It is a structural schematic diagram of the present application;

[0017] Figure 2 It is an inclination angle schematic diagram of the present application;

[0018] Figure 3 It is an internal structure schematic diagram of the present application;

[0019] Figure 4 It is a sectional view of the present application;

[0020] Figure 5 It is the present application Figure 4 The enlarged view of A in the present application.

[0021] BRIEF DESCRIPTION OF DRAWINGS

[0022] In the figure: 1, detection support frame; 101, display and communication part; 102, microprocessor; 103, protective shell; 104, detection hole; 105, detection rod; 106, gathering plate; 2, motor; 201, rotating shaft; 202, toothed disc; 203, knob; 204, first rack; 205, second rack; 206, moving block; 207, first sliding groove; 3, fixed plate; 301, guide rod; 302, second sliding groove; 303, special-shaped limiting block; 304, limiting rod. DETAILED DESCRIPTION

[0023] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0024] The connection method can be any existing method, such as bonding, welding, or bolting, depending on the actual needs.

[0025] like Figures 1 to 5 The soil moisture content testing device shown includes a testing support frame 1 for supporting the soil moisture content testing process. A motor 2 is installed at the bottom of the testing support frame 1. The output shaft of the motor 2 is connected to a rotating shaft 201 via a coupling. A knob 203 is connected to the end of the rotating shaft 201 away from the motor 2. When encountering harder soil, external force can be used to rotate the knob 203 to increase the soil gathering capacity of the gathering plate 106. A geared disc 202 is connected to the outer periphery of the rotating shaft 201. A first rack 204 and a second rack 205 are symmetrically meshed on the outer periphery of the geared disc 202. A movable block 206 is welded to one end of each of the first rack 204 and the second rack 205. The gathering plate 106 is connected to the side of the movable block 206. A second sliding groove 302 is provided at the bottom of the testing support frame 1. The movable block 206 slides inside the second sliding groove 302. A fixing plate 3 is welded on, and a guide rod 301 is connected to the side of the fixing plate 3. One end of the gathering plate 106 is provided with a hole that slides with the guide rod 301. The transverse inner wall of the detection support frame 1 is provided with a first sliding groove 207. The first rack 204 is slidably installed inside the first sliding groove 207. When the motor 2 is turned on, the motor 2 drives the rotating shaft 201 and the knob 203 to rotate. The rotating shaft 201 drives the gear plate 202 to rotate. The knob 203 drives the first rack 204 and the second rack 205 to move along the direction of the first sliding groove 207. The first rack 204 and the second rack 205 drive the moving block 206 and the gathering plate 106 to move towards the protective shell 103. Under the action of the first sliding groove 207, the second sliding groove 302 and the guide rod 301, the gathering plate 106 gathers the soil with the moisture content to be tested towards the protective shell 103, increasing the cohesion between soil particles.

[0026] The top of the detection support frame 1 is provided with a display and communication part 101 for displaying soil moisture content detection values and realizing communication with external equipment. The display and communication part 101 directly displays the measurement results of soil moisture content. The display screen can be a liquid crystal display (LCD) or an organic light-emitting diode display (OLED). It can display real-time soil moisture content values, units, and some simple prompt information such as battery power, measurement state, etc. The communication interface realizes communication with external equipment. Common communication interfaces include RS-232, RS-485, USB, Bluetooth, and ZigBee, etc. Through these interfaces, soil moisture content data can be transmitted to the host computer software for more complex data analysis and processing, or sent to a remote server to realize remote monitoring. For example, in an automated irrigation system in a large farm, soil moisture content data is sent to the control center of the farm through a ZigBee communication interface to facilitate centralized management and decision-making of irrigation schemes. The bottom of the display and communication part 101 is connected to a microprocessor 102, which processes the converted digital signals. It can run specific algorithms to calculate soil moisture content based on sensor signals. For example, according to the sensor calibration curve pre-stored in its internal memory, the digital signal is converted into the actual soil moisture content value. At the same time, the microprocessor can also control the operation of the entire device, such as timing data acquisition, communication with external equipment, etc. The detection rod 105 transmits signals into the microprocessor 102, and the display and communication part 101 displays the measurement values. The microprocessor 102 is installed with a protective shell 103 away from the display and communication part 101. The protective shell 103 is installed with a detection rod 105 inside, and the outer periphery of the protective shell 103 is provided with a detection hole 104;

[0027] The moisture content detection device composed of the display and communication part 101, the microprocessor 102 and the detection rod 105 is a prior art, which can be referred to (capacitance soil moisture sensor) a kind of based on the relationship between soil dielectric constant and soil moisture content. The dielectric constant of water (about 80) is much larger than that of soil particles (about 3-5) and air (about 1). When the water content in the soil changes, the dielectric constant between the two polar plates of the sensor changes, causing a change in capacitance. By measuring the capacitance value, the soil moisture content can be calculated. This sensor has high precision, strong adaptability to soil texture and other factors, and relatively fast response speed. For example, in some precision agriculture irrigation systems, capacitive sensors can quickly sense changes in soil moisture, provide timely feedback, and help reasonably arrange irrigation time and water volume. The soil moisture content detection device is not the innovation direction, and is not described in detail.

[0028] The outer periphery of the gathering plate 106 is slidably connected with a special-shaped limiting block 303, the side surface of the special-shaped limiting block 303 is provided with a limiting rod 304, the bottom of the gathering plate 106, the detection rod 105 and the special-shaped limiting block 303 are all tapered metal materials, the pressing detection support frame 1 drives the part of the protection shell 103 and the gathering plate 106 to enter the soil whose water content needs to be detected.

[0029] Working principle

[0030] The soil water content detection device, in use, the pressing detection support frame 1 drives the part of the protection shell 103 and the gathering plate 106 to enter the soil whose water content needs to be detected, the motor 2 is started, the motor 2 drives the rotating shaft 201 and the knob 203 to rotate, the rotating shaft 201 drives the gear disc 202 to rotate, the knob 203 drives the first rack 204 and the second rack 205 to move along the direction of the first sliding groove 207, the first rack 204 and the second rack 205 drive the moving block 206 and the gathering plate 106 to move towards the protection shell 103, the gathering plate 106 is affected by the first sliding groove 207, the second sliding groove 302 and the guide rod 301, and the soil whose water content needs to be detected is gathered towards the protection shell 103, so that the cohesion between soil particles is increased, the detection rod 105 transmits a signal to the microprocessor 102, and the display and communication part 101 displays the measured value, when hard soil is encountered, the knob 203 can be rotated by using external force, so that the gathering ability of the gathering plate 106 to the soil is increased.

[0031] It should be noted that, in this document, relational terms such as one and the other and at least one of are used solely to distinguish one entity or action from another entity or action, without necessarily requiring or implying that each modified entity or action must exist separately from another entity or action.

[0032] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A soil moisture content testing device, comprising a testing support frame (1) for supporting the soil moisture content testing process, characterized in that: A motor (2) is installed at the bottom of the detection support frame (1). The output shaft of the motor (2) is connected to a rotating shaft (201) via a coupling. A knob (203) is connected to the end of the rotating shaft (201) away from the motor (2). A gear plate (202) is connected to the outer periphery of the rotating shaft (201). A first rack (204) and a second rack (205) are symmetrically meshed on the outer periphery of the gear plate (202). One end of the first rack (204) and the second rack (205) are connected to the gear plate. Each component is welded with a movable block (206), and a gathering plate (106) is connected to the side of the movable block (206). The bottom of the detection support frame (1) is provided with a second sliding groove (302), and the movable block (206) slides inside the second sliding groove (302). The bottom of the detection support frame (1) is welded with a fixed plate (3), and a guide rod (301) is connected to the side of the fixed plate (3). One end of the gathering plate (106) is provided with a hole that slides with the guide rod (301).

2. The soil moisture content detection device according to claim 1, characterized in that: The top of the detection support frame (1) is provided with a display and communication unit (101) for displaying soil moisture content detection values ​​and enabling communication between the device and external equipment. The bottom of the display and communication unit (101) is connected to a microprocessor (102).

3. The soil moisture content detection device according to claim 2, characterized in that: The microprocessor (102) is equipped with a protective shell (103) at the end away from the display and communication unit (101). A detection rod (105) is installed inside the protective shell (103), and a detection hole (104) is provided on the outer periphery of the protective shell (103).

4. The soil moisture content detection device according to claim 1, characterized in that: The outer periphery of the gathering plate (106) is slidably connected to a shaped limiting block (303), and a limiting rod (304) is installed on the side of the shaped limiting block (303).

5. A soil moisture content detection device according to claim 4, characterized in that: The bottoms of the gathering plate (106), the detection rod (105), and the irregularly shaped limiting block (303) are all made of conical metal.

6. The soil moisture content detection device according to claim 1, characterized in that: The transverse inner wall of the detection support frame (1) is provided with a first sliding groove (207), and the first rack (204) is slidably installed inside the first sliding groove (207).

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