Agricultural greenhouse soil temperature and humidity sensor for smart agriculture

Abstract

The application relates to the technical field of sensors, and discloses a soil temperature and humidity sensor for a smart agricultural greenhouse, which comprises a shell, an installation assembly for connecting the shell with the outside world is arranged on the outer side of the shell, and a partition plate is fixedly arranged in the shell. When the soil temperature and humidity is monitored, the probe rod can be adaptively deflected when the roots of trees reach the probe rod, so that the probe rod cannot be damaged by the thick roots of trees, the probe rod can be retracted when the probe rod is deflected to the limit and cannot be deflected, the probe rod cannot be damaged by the continuously growing roots, the probe rod is further protected, the position of the land can be marked when the probe rod is deflected, the roots can be known according to the dye on the surface of the soil body after the probe rod is retracted into the shell, the insertion of the probe rod cannot be continuously carried out, and the insertion position of the probe rod can be replaced by the staff.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of sensors, and particularly relates to a soil temperature and humidity sensor for a smart agricultural greenhouse. BACKGROUND

[0002] The soil humidity sensor is also called a soil moisture sensor, a soil moisture content sensor or a soil water content sensor. The soil humidity sensor is mainly used for measuring the relative soil moisture content and monitoring the soil moisture content, agricultural irrigation and forestry protection. The soil humidity sensor adopts the FDR frequency domain reflection principle.

[0003] Smart agriculture is a specific performance of smart economy in agriculture. During the planting period of a smart agricultural greenhouse, the soil temperature and humidity of plants need to be monitored so as to timely adjust the soil temperature and humidity and ensure the growth of plants. In this process, a soil temperature and humidity sensor needs to be used. In the prior art, the probe rod of the soil temperature and humidity sensor is inserted into the soil, and then the probe rod is fixed, and then the soil temperature and humidity is monitored through the probe rod. However, when the planted crops are trees, the roots of the trees will continuously thicken and spread, and the spreading roots will push against the probe rod, which is easy to cause damage to the probe rod.

[0004] Therefore, it is necessary to provide a soil temperature and humidity sensor for a smart agricultural greenhouse to solve the above problems. SUMMARY

[0005] In view of the above problems, the application provides a soil temperature and humidity sensor for a smart agricultural greenhouse to solve the problems in the background.

[0006] To achieve the above object, the application provides the following technical scheme: a soil temperature and humidity sensor for a smart agricultural greenhouse, comprising a shell, an installation assembly for connecting the shell with the outside world is arranged on the outer side of the shell, a partition plate is fixedly installed in the inside of the shell, a sensor assembly is fixedly connected to the upper portion of the partition plate, a transmission line is arranged on the top of the sensor assembly, an opening is arranged in the middle of the bottom end of the shell, a thimble is fixedly installed in the opening, a metal ball is rotatably installed in the inside of the thimble, a probe rod is slidably inserted into the middle portion of the metal ball, a driving assembly for driving the vertical movement of the probe rod is arranged in the inside of the metal ball, a positioning assembly for positioning the probe rod is arranged on the top of the probe rod, and the probe rod and the sensor assembly are connected through a wire.

[0007] Further, the positioning assembly comprises a spherical body fixedly connected to the outer side of the upper portion of the probe rod, horizontal plates are symmetrically fixedly installed on the inner wall of the shell, electric push rods are fixedly connected to the bottom end of the horizontal plates, a limiting plate is fixedly connected to the bottom end of the extension end of the two electric push rods, and an arc-shaped clamping hole matched with the spherical body is arranged in the middle of the bottom end of the limiting plate.

[0008] Further, the driving assembly comprises a pair of motors, cavities are symmetrically arranged in the metal ball, the motors are fixedly installed in the cavities, gear wheels are fixedly connected to output shafts of the motors, the outer side of the probe rod is provided with gear teeth matched with the gear wheels, the bottom end of the sleeve ring is fixedly installed with a first annular copper sheet, and the bottom end of the metal ball is fixedly connected with a second annular copper sheet.

[0009] Further, the inside of the sleeve ring is provided with an annular cavity, the bottom end of the sleeve ring is equidistantly surrounded by spray holes communicated with the annular cavity, and the inside of the shell is provided with a liquid injection assembly for injecting dyeing liquid into the annular cavity in cooperation with the ball.

[0010] Further, the liquid injection assembly comprises an annular shell fixedly connected to the bottom wall of the shell, the annular shell is communicated with the annular cavity through a first conduit, the bottom wall of the shell is fixedly connected with a box body, the top of the box body is provided with a liquid adding pipe communicated with the outside of the shell, the end of the liquid adding pipe is provided with a plunger, the lower part of the box body is communicated with the annular shell through a second conduit, the spray holes and the second conduit are both provided with one-way valves, the inside of the annular shell is provided with a pressing plate, the top of the pressing plate is fixedly connected with a pair of pressing rods, the top ends of the pair of pressing rods extend to the outside of the annular shell and are fixedly connected with an annular plate, and springs are arranged outside the pressing rods.

[0011] Further, the outside of the shell is provided with an observation window, the observation window is provided with a glass plate, and the box body is made of glass.

[0012] Further, the mounting assembly comprises cylinder bodies fixedly connected to the outside of the shell, a support is slidingly installed between the two cylinder bodies, and the upper part of the support is fixedly connected with a clamp.

[0013] Further, the metal ball is specifically provided as a spherical member made of stainless steel.

[0014] Technical effects and advantages of the present application:

[0015] 1. The present application can realize adaptive deflection of the probe rod when the roots of the trees reach the probe rod during soil temperature and humidity monitoring, so as to prevent the probe rod from being damaged by the thick roots of the trees, and the probe rod can be retracted when it is deflected to the limit and cannot be deflected any more, so as to avoid the probe rod being damaged by the continuously growing roots and further protect the probe rod.

[0016] 2. The present application can mark the position of the land where the probe rod is deflected, and the insertion of the probe rod can be stopped when the probe rod is retracted into the shell, so as to help the staff to change the insertion position of the probe rod according to the dyeing agent on the surface of the soil body. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1This invention illustrates a schematic diagram of the structure of a soil temperature and humidity sensor for smart agriculture greenhouses, according to an embodiment of the present invention.

[0018] Figure 2 A cross-sectional view of the soil temperature and humidity sensor for agricultural greenhouses used in smart agriculture, according to an embodiment of the present invention, is shown.

[0019] Figure 3 An embodiment of the present invention is shown. Figure 2 Enlarged structural diagram at point A in the middle;

[0020] Figure 4 A bottom view schematic diagram of the soil temperature and humidity sensor for agricultural greenhouses used in smart agriculture according to an embodiment of the present invention is shown.

[0021] In the diagram: 1. Outer shell; 2. Sensor assembly; 3. Transmission line; 4. Collar; 5. Metal ball; 6. Probe rod; 7. Ball; 8. Horizontal plate; 9. Electric push rod; 10. Limiting plate; 11. Wire; 12. Gear; 13. Tooth; 14. Annular cavity; 15. Spray hole; 16. Annular shell; 17. First conduit; 18. Box body; 19. Second conduit; 20. Pressure plate; 21. Pressure rod; 22. Annular plate; 23. Spring; 24. Cylinder; 25. Support; 26. Clamp; 27. First annular copper sheet; 28. Second annular copper sheet. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0023] This invention provides a soil temperature and humidity sensor for smart agriculture greenhouses, such as... Figures 1 to 4 As shown, the device includes a housing 1. The outer side of the housing 1 is provided with an installation assembly for connecting it to the outside. A partition is fixedly installed inside the housing 1. A sensor assembly 2 is fixedly connected above the partition. A transmission line 3 is provided on the top of the sensor assembly 2. An opening is provided in the middle of the bottom end of the housing 1. A collar 4 is fixedly installed in the opening. A metal ball 5 is rotatably installed inside the collar 4. A probe rod 6 is slidably inserted into the middle of the metal ball 5. A drive assembly for driving the probe rod 6 to move vertically is provided inside the metal ball 5. A positioning assembly for positioning the probe rod 6 is provided on the top of the probe rod 6. The probe rod 6 is connected to the sensor assembly 2 by a wire 11.

[0024] In use, the shell 1 is connected with the fence outside the world through the installation assembly, the shell 1 is slid to drive the sleeve ring 4, the metal ball 5 and the probe rod 6 to move downward, so that the probe rod 6 is inserted into the soil, then the positioning assembly is cancelled to the positioning of the probe rod 6, the signal of the monitored soil temperature and humidity can be transmitted to the sensor assembly 2 through the probe rod 6 cooperating with the wire 11, and the signal is transmitted to the background through the transmission line 3 to display, so that the monitoring of the soil temperature and humidity is completed, the sensor assembly 2 is the same as the sensor assembly in the soil temperature and humidity sensor in the prior art, which is used for collecting soil temperature and humidity data with the probe rod. Since the roots of the planted trees will continue to grow, when the roots reach the probe rod 6, the roots will push the probe rod 6 to drive the metal ball 5 to rotate in the sleeve ring 4, and the roots will be deflected, so that the probe rod 6 can adapt to the pressure caused by the roots, and the probe rod 6 can adaptively deflect to ensure that it will not be damaged by the thick roots of the trees. When the probe rod 6 is deflected to resist the sleeve ring 4 and cannot continue to deflect, the driving assembly drives the probe rod 6 to move, so that the probe rod 6 is retracted into the shell 1 and leaves the soil. At this time, the probe rod 6 which cannot be deflected can be prevented from being damaged by the continuously growing roots. At this time, the staff can install the shell 1 in another place, then drive the probe rod 6 to reset through the driving assembly, straighten the probe rod 6, then position the probe rod 6 through the positioning assembly to keep it in a vertical state, and then insert it into the soil as above.

[0025] As shown in Figure 2 , the positioning assembly includes a ball 7 fixedly connected to the outer side of the upper part of the probe rod 6, the inner wall of the shell 1 is symmetrically fixedly provided with a horizontal plate 8, the bottom end of the horizontal plate 8 is fixedly connected with an electric push rod 9, and the extension ends of the two electric push rods 9 are fixedly connected with a limiting plate 10. An arc-shaped clamping hole matched with the ball 7 is formed in the middle of the bottom end of the limiting plate 10.

[0026] The electric push rod 9 is started to be shortened to drive the limiting plate 10 to rise, so that the arc-shaped clamping hole is away from the ball 7, the extrusion of the ball 7 is cancelled, and the ball 7 and the probe rod 6 can swing. Conversely, the electric push rod 9 is started to be lengthened to drive the limiting plate 10 to descend, so that the ball 7 is clamped and fixed by the arc-shaped clamping hole, and the positioning of the ball 7 and the probe rod 6 is realized.

[0027] As shown in Figure 3 , the driving assembly includes a pair of motors, the inside of the metal ball 5 is symmetrically provided with a cavity, the motors are fixedly installed in the corresponding cavities, the output shafts of the motors are fixedly connected with gears 12, the outer side of the probe rod 6 is provided with teeth 13 matched with the gears 12, the bottom end of the sleeve ring 4 is fixedly installed with a first annular copper sheet 27, and the bottom end of the metal ball 5 is fixedly connected with a second annular copper sheet 28.

[0028] When the probe rod 6 drives the metal ball 5 to deflect, the second annular copper sheet 28 moves with it. When the second annular copper sheet 28 collides with the first annular copper sheet 27, the probe rod 6 cannot be deflected at this time. The collision between the second annular copper sheet 28 and the first annular copper sheet 27 enables the motor to be powered on at this time. The motor output shaft rotates the gear 12 to drive the probe rod 6 to rise, so that the probe rod 6 is retracted into the shell 1, and the retraction of the probe rod 6 is completed. The motor can be started to reverse the output shaft. Conversely, the probe rod 6 can be lowered to extend outside the shell 1. The motor is a self-locking motor, and the output shaft is in a locked state without power. The first annular copper sheet 27 and the second annular copper sheet 28 are connected to the motor and the built-in power supply through wires. The power supply and the wires are not shown in the figure. After the first annular copper sheet 27 and the second annular copper sheet 28 collide, the circuit is connected, and the basic principle of the motor starting is the prior art, which is not described here.

[0029] As shown in Figure 2 and Figure 3 , the inside of the collar 4 is provided with an annular cavity 14, and the bottom end of the collar 4 is provided with a plurality of injection holes 15 which are equidistantly arranged around the annular cavity 14 and are in communication with the annular cavity 14. The inside of the shell 1 is provided with a liquid injection assembly for injecting dyeing liquid into the annular cavity 14 in cooperation with the sphere 7.

[0030] When the probe rod 6 is about to be unable to deflect, the liquid injection assembly injects dyeing liquid into the annular cavity 14, so that the dyeing liquid is sprayed out through the injection holes 15 to mark the soil. After the probe rod 6 is retracted into the shell 1, it can be known from the dyeing agent on the surface of the soil body that there is a root stem at this place, and the insertion of the probe rod 6 cannot continue.

[0031] As shown in Figure 3 , the liquid injection assembly comprises a ring-shaped shell 16 fixedly connected to the bottom wall of the shell 1. The ring-shaped shell 16 is in communication with the annular cavity 14 through a first conduit 17. The bottom wall of the shell 1 is fixedly connected with a box body 18. The top of the box body 18 is provided with a liquid filling pipe which is in communication with the outside of the shell 1. The end of the liquid filling pipe is provided with a plunger. The lower part of the box body 18 is in communication with the ring-shaped shell 16 through a second conduit 19. The injection holes 15 and the second conduit 19 are each provided with a one-way valve. The inside of the ring-shaped shell 16 is provided with a pressing plate 20. The top of the pressing plate 20 is fixedly connected with a pair of pressing rods 21. The top ends of the pair of pressing rods 21 extend out of the ring-shaped shell 16 and are jointly fixedly connected with a ring-shaped plate 22. The outside of the pressing rod 21 is sleeved with a spring 23.

[0032] When the probe rod 6 drives the ball 7 to deflect to stop, the ball 7 will press the annular plate 22 to drive the pressing rod 21 and the pressing plate 20 to descend, so that the dyeing agent in the annular shell 16 is extruded outward, the annular plate 22 compresses the spring 23 to generate an acting force, at this time, the one-way valve in the second conduit 19 is closed, the dyeing agent enters the annular cavity 14 through the first conduit 17 to open the one-way valve in the spray hole 15 and is sprayed out, so that the land is marked, when the ball 7 leaves the annular plate 22, the spring 23 releases the acting force to drive the annular plate 22, the pressing rod 21 and the pressing plate 20 to rise and reset, at this time, the one-way valve in the second conduit 19 is opened, the one-way valve in the spray hole 15 is closed, and the dyeing agent in the box body 18 is drawn into the annular shell 16 through the second conduit 19 as the pressing plate 20 rises and resets.

[0033] As shown in Figure 1 , the outer side of the shell 1 is provided with an observation window, the observation window is provided with a glass plate, and the box body 18 is made of glass.

[0034] So that the remaining amount of the dyeing agent in the box body 18 can be observed through the glass plate, which is convenient for timely supplement.

[0035] As shown in Figure 1 , the mounting assembly comprises a cylinder 24 fixedly connected to the outer side of the shell 1, a bracket 25 slidably mounted between the two cylinders 24, and a clamp 26 fixedly connected to the upper part of the bracket 25.

[0036] The clamp 26 can be sleeved on the fence, the probe rod 6 can be inserted into the soil, and then the clamp 26 and the fence are fixed by the bolts passing through the holes in the clamp 26 and cooperating with the nuts, so that the whole sensor is installed.

[0037] As shown in Figure 4 , the metal ball 5 is specifically a spherical member made of stainless steel.

[0038] So that the metal ball 5 is not easy to rust, has high strength and long service life.

[0039] Working principle: the clamp 26 can be sleeved on the fence, the probe rod 6 can be inserted into the soil, then the clamp 26 and the fence are fixed through the bolt passing through the hole on the clamp 26 and cooperating with the nut, the installation of the whole sensor is realized, the electric push rod 9 is started to make it shorten and drive the limiting plate 10 to rise, so that the arc-shaped clamp is separated from the ball 7, the extrusion of the ball 7 is cancelled, the ball 7 and the probe rod 6 can swing, the signal of the monitored soil temperature and humidity can be transmitted to the sensor assembly 2 through the probe rod 6 and the wire 11, the signal is transmitted to the background through the transmission line 3 for display, the monitoring of the soil temperature and humidity is completed, the sensor assembly 2 is used for collecting the soil temperature and humidity data with the sensor assembly in the soil temperature and humidity sensor in the prior art, since the roots of the planted trees will continuously grow, when the roots reach the probe rod 6, the metal ball 5 can rotate in the sleeve ring 4, so the roots will push the probe rod 6 to make the metal ball 5 rotate in the sleeve ring 4, and the probe rod 6 can adaptively deflect to ensure that it will not be damaged by the thick roots, when the probe rod 6 deflects to the sleeve ring 4 and cannot continue to deflect, the second annular copper sheet 28 is in contact with the first annular copper sheet 27, so that the motor is powered on at this time, the motor output shaft rotates in the positive direction to drive the gear 12 to rotate, the gear 13 drives the probe rod 6 to rise, so that the probe rod 6 is retracted into the shell 1, and the retraction of the probe rod 6 is completed, at this time, the probe rod 6 that cannot be deflected can be prevented from being damaged by the continuously growing roots, at this time, the staff can install the shell 1 in another place, then the motor is started to make the output shaft reverse, and vice versa, the probe rod 6 can be lowered to extend out of the shell 1, the probe rod 6 is straightened, the electric push rod 9 is started to make it elongate and drive the limiting plate 10 to descend, so that the ball 7 is clamped and fixed by the arc-shaped clamp, the positioning of the ball 7 and the probe rod 6 is realized, and the above is inserted into the soil for use; when the probe rod 6 drives the ball 7 to deflect to stop, the ball 7 will press the annular plate 22 to make the pressure rod 21 and the pressing plate 20 descend to extrude the dyeing agent in the annular shell 16, the annular plate 22 compresses the spring 23 to make it deform to generate a force, at this time, the one-way valve in the second conduit 19 is closed, the dyeing agent enters the annular cavity 14 through the first conduit 17 to open the one-way valve in the spray hole 15 to spray out, the land is marked, when the probe rod 6 is retracted into the shell 1, it can be known from the dyeing agent on the surface of the soil body that there is a root, and the insertion of the probe rod 6 cannot continue, when the ball 7 leaves the annular plate 22, at this time, the spring 23 releases the force to drive the annular plate 22, the pressure rod 21 and the pressing plate 20 to rise and reset, at this time, the one-way valve in the second conduit 19 is opened, the one-way valve in the spray hole 15 is closed, and the dyeing agent in the box body 18 is drawn into the annular shell 16 through the second conduit 19 as the pressing plate 20 rises and resets.

[0040] The above examples are only used to illustrate the technical solutions of the present application, but not limit it.

Claims

1. A soil temperature and humidity sensor for smart agriculture greenhouses, comprising a housing (1), characterized in that: The outer side of the shell (1) is provided with a mounting assembly for connecting it with the outside world, the inside of the shell (1) is fixedly provided with a partition plate, the upper side of the partition plate is fixedly connected with a sensor assembly (2), the top of the sensor assembly (2) is provided with a transmission line (3), the bottom end of the shell (1) is provided with an opening, the inside of the opening is fixedly provided with a thimble (4), the inside of the thimble (4) is rotatably provided with a metal ball (5), the middle of the metal ball (5) is slidably inserted with a probe rod (6), the inside of the metal ball (5) is provided with a driving assembly for driving the probe rod (6) to move vertically, the top of the probe rod (6) is provided with a positioning assembly for positioning the probe rod (6), the probe rod (6) and the sensor assembly (2) are connected through a wire (11), the driving assembly comprises a pair of motors, the inside of the metal ball (5) is symmetrically provided with cavities, the motors are fixedly installed in the corresponding cavities, the output shaft of the motor is fixedly connected with a gear (12), the outside of the probe rod (6) is provided with a gear tooth (13) matched with the gear (12), the bottom end of the thimble (4) is fixedly provided with a first annular copper sheet (27), the bottom end of the metal ball (5) is fixedly connected with a second annular copper sheet (28).

2. The soil temperature and humidity sensor for an agricultural greenhouse for smart agriculture according to claim 1, characterized in that: The positioning assembly comprises a spherical body (7) fixedly connected to the outer side of the upper part of the probe rod (6), the inner wall of the shell (1) is symmetrically fixedly provided with a horizontal plate (8), the bottom end of the horizontal plate (8) is fixedly connected with an electric push rod (9), the bottom ends of the two electric push rods (9) are fixedly connected with a limiting plate (10), the bottom end of the limiting plate (10) is provided with an arc-shaped clamping hole matched with the spherical body (7).

3. The soil temperature and humidity sensor for the intelligent agricultural greenhouse according to claim 2, characterized in that: The inside of the thimble (4) is provided with an annular cavity (14), the bottom end of the thimble (4) is provided with a plurality of spray holes (15) in equidistant around and communicated with the annular cavity (14), the inside of the shell (1) is provided with a liquid injection assembly for injecting dyeing liquid into the annular cavity (14) matched with the spherical body (7).

4. The soil temperature and humidity sensor for an agricultural greenhouse for smart agriculture according to claim 3, characterized in that: The liquid injection assembly comprises an annular shell (16) fixedly connected to the bottom wall of the shell (1), the annular shell (16) is communicated with the annular cavity (14) through a first conduit (17), the bottom wall of the shell (1) is fixedly connected with a box body (18), the top of the box body (18) is provided with a liquid adding pipe communicated with the outside of the shell (1), the end of the liquid adding pipe is provided with a plunger, the lower part of the box body (18) is communicated with the annular shell (16) through a second conduit (19), the spray holes (15) and the second conduit (19) are both provided with a one-way valve, the inside of the annular shell (16) is provided with a pressing plate (20), the top of the pressing plate (20) is fixedly connected with a pair of pressing rods (21), the top ends of the pair of pressing rods (21) extend to the outside of the annular shell (16) and are fixedly connected with an annular plate (22), the outside of the pressing rod (21) is sleeved with a spring (23).

5. The soil temperature and humidity sensor for the intelligent agricultural greenhouse according to claim 4, characterized in that: The outside of the shell (1) is provided with an observation window, the observation window is provided with a glass plate, the material of the box body (18) is glass.

6. The soil temperature and humidity sensor for an agricultural greenhouse for smart agriculture according to claim 1, characterized in that: The mounting assembly comprises cylinder bodies (24) fixedly connected to the outer side of the shell (1) in a symmetrical manner, and a support (25) slidably mounted between the two cylinder bodies (24), and the upper portion of the support (25) is fixedly connected with a clamp (26).

7. The soil temperature and humidity sensor for an agricultural greenhouse for smart agriculture according to claim 1, characterized in that: The metal ball (5) is specifically a spherical member made of stainless steel.

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