Agricultural greenhouse soil temperature and humidity sensor for intelligent agriculture

Abstract

The invention relates to the technical field of sensors, and discloses an agricultural greenhouse soil temperature and humidity sensor for smart agriculture, which comprises a shell, the outer side of the shell is provided with a mounting assembly for connecting the shell with the outside, and the interior of the shell is fixedly provided with a partition plate. According to the invention, when the temperature and humidity of the soil are monitored and when the rootstock of a tree abuts against the probe rod, the probe rod can adaptively deflect to ensure that the probe rod cannot be damaged by the thick rootstock of the tree, and when the probe rod deflects to the limit and cannot deflect, the probe rod can be folded to prevent the probe rod which cannot deflect from being damaged by the rootstock which continuously grows, so that the detection accuracy is improved. The probe rod is further protected, the land of the position where the probe rod is located can be marked while the probe rod deflects, after the probe rod is retracted into the shell, it can be known that rhizomes exist at the position and insertion of the probe rod cannot be continued according to the coloring agent on the surface of the soil body, and workers are helped to replace the insertion position of the probe rod.

Description

Technical Field

[0001] The present invention belongs to the technical field of sensors, and particularly relates to a soil temperature and humidity sensor for agricultural greenhouses in smart agriculture. Background Technique

[0002] The soil humidity sensor is also known as: soil moisture sensor, soil moisture content sensor, soil water content sensor. It is mainly used to measure the relative water content of the soil for soil moisture monitoring, agricultural irrigation, and forestry protection. The soil humidity sensor adopts the FDR frequency domain reflection principle.

[0003] Smart agriculture is the specific manifestation of the smart economic form in agriculture. During the cultivation of smart agricultural greenhouses, it is necessary to monitor the temperature and humidity of the soil where plants are located in order to timely adjust the temperature and humidity of the soil and ensure the growth of plants. In this process, a soil temperature and humidity sensor is required. When the existing soil temperature and humidity sensor is in use, its probe rod is inserted into the soil, then fixed, and then the temperature and humidity of the soil body are monitored through the probe rod. However, when the planted crop is a tree, the root system of the tree will continuously thicken and spread, and the spreading root system will push against the probe rod, easily causing damage to the probe rod.

[0004] Therefore, it is very necessary to invent a soil temperature and humidity sensor for agricultural greenhouses in smart agriculture to solve the above problems. Summary of the Invention

[0005] In view of the above problems, the present invention provides a soil temperature and humidity sensor for agricultural greenhouses in smart agriculture to solve the problems raised in the above background technique.

[0006] To achieve the above object, the present invention provides the following technical solution: A soil temperature and humidity sensor for agricultural greenhouses in smart agriculture, including a housing, an installation component for connecting it to the outside is provided on the outer side of the housing, a partition is fixedly installed inside the housing, a sensor component is fixedly connected above the partition, a transmission line is provided at the top of the sensor component, an opening is formed in the middle of the bottom end of the housing, a collar is fixedly installed in the opening, a metal ball is rotatably installed inside the collar, a probe rod is slidably inserted through the middle of the metal ball, a driving component for driving the probe rod to move vertically is provided inside the metal ball, a positioning component for positioning the probe rod is provided at the top of the probe rod, and the probe rod is connected to the sensor component through a wire.

[0007] Furthermore, the positioning component includes a sphere fixedly connected to the upper part of the outer side of the probe rod, horizontal plates are symmetrically and fixedly installed on the inner wall of the housing, an electric push rod is fixedly connected to the bottom end of the horizontal plate, the bottom ends of the telescopic ends of the two electric push rods are commonly fixedly connected to a limiting plate, and an arc-shaped clamping opening matching the sphere is formed in the middle of the bottom end of the limiting plate.

[0008] Further, the driving assembly includes a pair of motors. Cavities are symmetrically formed inside the metal ball. The motors are fixedly installed in the corresponding cavities. A gear is fixedly connected to the output shaft of the motor. Teeth are provided on the outer side of the probe rod and are engaged with the gear. A first annular copper sheet is fixedly installed at the bottom end of the collar. A second annular copper sheet is fixedly connected to the bottom end of the metal ball.

[0009] Further, an annular cavity is provided inside the collar. Spray holes communicating with the annular cavity are equidistantly arranged around the bottom end of the collar. A liquid injection assembly for injecting dyeing liquid into the annular cavity in cooperation with the sphere is provided inside the outer shell.

[0010] Further, the liquid injection assembly includes an annular shell fixedly connected to the bottom wall of the outer shell. The annular shell communicates with the annular cavity through a first conduit. A box body is fixedly connected to the bottom wall of the outer shell. A liquid adding pipe communicating with the outside of the outer shell is provided at the top of the box body. A plunger is provided at the end of the liquid adding pipe. The lower part of the box body communicates with the annular shell through a second conduit. Check valves are provided in both the spray holes and the second conduit. A pressing plate is provided inside the annular shell. A pair of pressing rods are fixedly connected to the top of the pressing plate. The top ends of the pair of pressing rods extend outside the annular shell and are fixedly connected to an annular plate together. Springs are sleeved on the outer sides of the pressing rods.

[0011] Further, an observation window is provided on the outer side of the outer shell. A glass plate is provided in the observation window. The box body is made of glass.

[0012] Further, the installation assembly includes cylinders symmetrically and fixedly connected to the outer side of the outer shell. A bracket is slidably installed between the two cylinders. A clamp is fixedly connected to the upper part of the bracket.

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

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

[0015] 1. When the present invention is used for monitoring soil temperature and humidity, when the root system of a tree touches the probe rod, the probe rod can deflect adaptively to ensure that it will not be damaged by the thick root system of the tree. When the probe rod deflects to the limit and cannot deflect anymore, it can be retracted to avoid the non-deflectable probe rod being damaged by the continuously growing root system, further protecting the probe rod.

[0016] 2. The present invention can mark the land at the position where the probe rod deflects while the probe rod deflects. After the probe rod is retracted into the outer shell, it can be known from the dyeing agent on the soil surface that there is a root system here and the probe rod cannot be inserted continuously, which helps the staff to change the insertion position of the probe rod. Description of the Drawings

[0017] Figure 1Shows a schematic structural diagram of the soil temperature and humidity sensor for a smart agricultural greenhouse according to an embodiment of the present invention;

[0018] Figure 2 Shows a cross-sectional structural diagram of the soil temperature and humidity sensor for a smart agricultural greenhouse according to an embodiment of the present invention;

[0019] Figure 3 Shows an embodiment of the present invention Figure 2 The enlarged structural diagram at position A in;

[0020] Figure 4 Shows a bottom view structural diagram of the soil temperature and humidity sensor for a smart agricultural greenhouse according to an embodiment of the present invention;

[0021] In the figure: 1, housing; 2, sensor assembly; 3, transmission line; 4, collar; 5, metal ball; 6, probe rod; 7, sphere; 8, cross plate; 9, electric push rod; 10, limit 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, pressing plate; 21, pressing rod; 22, annular plate; 23, spring; 24, cylinder; 25, bracket; 26, clamp; 27, first annular copper sheet; 28, second annular copper sheet. Detailed implementation manners

[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] The present invention provides a soil temperature and humidity sensor for a smart agricultural greenhouse, as Figures 1 to 4 shown, including a housing 1. An installation assembly for connecting it to the outside is provided on the outer side of the housing 1. 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 formed 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 driving 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 through a wire 11.

[0024] In use, the housing 1 is connected to the external fence through the installation component. The housing 1 is slid to drive the collar 4, the metal ball 5 and the probe rod 6 to move downward, so that the probe rod 6 is inserted into the soil. Subsequently, the positioning of the probe rod 6 by the positioning component is cancelled. The signal of the monitored soil temperature and humidity can be transmitted to the sensor component 2 through the probe rod 6 and the wire 11, and the signal is transmitted to the background through the transmission line 3 for display, completing the monitoring of the soil temperature and humidity. The sensor component 2 is the same as the sensor component in the prior art soil temperature and humidity sensor, and is used to cooperate with the probe rod to collect soil temperature and humidity data. Since the roots of the planted trees will continuously extend, when the root system touches the probe rod 6, because the metal ball 5 can rotate freely in the collar 4, the root system will push against the probe rod 6 to drive the metal ball 5 to rotate in the collar 4 and deflect, so as to adapt to the pressure caused by the root system, and the probe rod 6 will deflect adaptively to ensure that it will not be damaged by the thick root system of the tree. When the probe rod 6 deflects until it touches the collar 4 and cannot deflect further, at this time, the driving component drives the probe rod 6 to move, so that the probe rod 6 is retracted into the housing 1 and leaves the soil. At this time, it can be avoided that the non-deflectable probe rod 6 is damaged by the continuously growing root system. At this time, the staff can install the housing 1 in another place, and then drive the probe rod 6 to reset through the driving component, straighten the probe rod 6, and then position the probe rod 6 through the positioning component to keep it in a vertical state, and then insert it into the soil for use as above.

[0025] As Figure 2 shown, the positioning component includes a sphere 7 fixedly connected to the upper part of the outer side of the probe rod 6. The inner walls of the housing 1 are symmetrically and fixedly provided with cross plates 8. The bottom ends of the cross plates 8 are fixedly connected with electric push rods 9. The bottom ends of the telescopic ends of the two electric push rods 9 are jointly fixedly connected with a limiting plate 10. The middle part of the bottom end of the limiting plate 10 is provided with an arc-shaped bayonet that cooperates with the sphere 7.

[0026] Start the electric push rod 9 to shorten it, driving the limiting plate 10 to rise, so that the arc-shaped bayonet leaves the sphere 7, canceling the extrusion of the sphere 7, and the sphere 7 and the probe rod 6 can swing. On the contrary, start the electric push rod 9 to extend it, driving the limiting plate 10 to descend so as to cooperate with the arc-shaped bayonet to clamp and fix the sphere 7, realizing the positioning of the sphere 7 and the probe rod 6.

[0027] As Figure 3 shown, the driving component includes a pair of motors. Cavities are symmetrically opened inside the metal ball 5. The motors are fixedly installed in the corresponding cavities. The output shafts of the motors are fixedly connected with gears 12. Teeth 13 that cooperate with the gears 12 are provided on the outer side of the probe rod 6. A first annular copper sheet 27 is fixedly installed at the bottom end of the collar 4, and a second annular copper sheet 28 is fixedly connected to the bottom end of the metal ball 5.

[0028] When the probe rod 6 drives the metal ball 5 to deflect, the second annular copper sheet 28 moves accordingly. When the second annular copper sheet 28 conflicts with the first annular copper sheet 27, the probe rod 6 cannot deflect at this time. The second annular copper sheet 28 conflicts with the first annular copper sheet 27, so that the motor is powered on and started. The positive rotation of the motor output shaft drives the gear 12 to rotate and the matching teeth 13 drives the probe rod 6 to rise, so that the probe rod 6 is retracted into the housing 1, completing the retraction of the probe rod 6. The motor can be started to reverse its output shaft. Conversely, the probe rod 6 can be lowered and extended out of the housing 1. The motor is a self-locking motor, and its output shaft is in a locked state when it is not powered. 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 wires are not shown in the figure. After the first annular copper sheet 27 conflicts with the second annular copper sheet 28, the circuit is connected. The basic principle of starting the motor is the prior art and will not be repeated here.

[0029] like Figure 2 and Figure 3 As shown, an annular cavity 14 is provided inside the collar 4, and spray holes 15 communicating with the annular cavity 14 are equidistantly arranged around the bottom end of the collar 4. An injection assembly for cooperating with the sphere 7 to inject dyeing liquid into the annular cavity 14 is provided inside the housing 1.

[0030] When the probe rod 6 is about to be unable to deflect, the injection assembly will cooperate to inject dyeing liquid into the annular cavity 14, so that the dyeing liquid is sprayed out through the spray hole 15 to mark the land. When the probe rod 6 is retracted into the outer shell 1, it can be known from the dye on the surface of the soil that there are roots here, and the probe rod 6 cannot be inserted further.

[0031] like Figure 3 As shown, the liquid injection assembly includes an annular shell 16 fixedly connected to the bottom wall of the shell 1, the annular shell 16 is connected to the annular cavity 14 through a first conduit 17, the bottom wall of the shell 1 is fixedly connected to a box body 18, the top of the box body 18 is provided with a liquid adding pipe connected to the outside of the shell 1, a plunger is provided at the end of the liquid adding pipe, the lower part of the box body 18 is connected to the annular shell 16 through a second conduit 19, the spray hole 15 and the second conduit 19 are both provided with a one-way valve, a pressure plate 20 is provided inside the annular shell 16, a pair of pressure rods 21 are fixedly connected to the top of the pressure plate 20, the top ends of the pair of pressure rods 21 extend to the outside of the annular shell 16 and are commonly fixedly connected to an annular plate 22, and a spring 23 is provided on the outer sleeve of the pressure rod 21.

[0032] When the probe rod 6 drives the sphere 7 to deflect and is about to stop, the sphere 7 will press the annular plate 22, causing it to drive the pressure rod 21 and the pressing plate 20 to descend, so as to squeeze the dye in the annular shell 16 outwards. The annular plate 22 compresses the spring 23 to cause it to deform and generate a force. At this time, the check valve in the second conduit 19 closes, and the dye enters the annular cavity 14 through the first conduit 17 and opens the check valve in the spray hole 15 to spray out, realizing the marking of the land. When the sphere 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 check valve in the second conduit 19 opens, and the check valve in the spray hole 15 closes. As the pressing plate 20 rises and resets, the dye in the box body 18 is pumped into the annular shell 16 through the second conduit 19.

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

[0034] So that the remaining amount of the dye in the box body 18 can be observed through the glass plate on the surface, which is convenient for timely replenishment.

[0035] As Figure 1 shown, the installation assembly includes cylinders 24 symmetrically and fixedly connected to the outer side of the outer shell 1. A bracket 25 is slidably installed between the two cylinders 24, and a clamp 26 is fixedly connected to the upper part of the bracket 25.

[0036] The clamp 26 can be sleeved on the fence, and the probe rod 6 can be inserted into the soil. Then, bolts are passed through the holes on the clamp 26 and cooperated with nuts to fix the clamp 26 and the fence, realizing the installation of the entire sensor.

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

[0038] So that the metal ball 5 is not easily rusted, has high self-strength and long service life.

[0039] Working principle: The clamp 26 can be sleeved on the fence, and the probe rod 6 can be inserted into the soil. Subsequently, bolts are passed through the holes on the clamp 26 and cooperate with nuts to fix the clamp 26 to the fence, thus realizing the installation of the entire sensor. Start the electric push rod 9 to shorten it, driving the limit plate 10 to rise, so that the arc-shaped bayonet leaves the sphere 7, canceling the extrusion of the sphere 7. The sphere 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 cooperation of the probe rod 6 and the wire 11, and the signal is transmitted to the background for display through the transmission line 3, completing the monitoring of the soil temperature and humidity. The sensor assembly 2 is the same as the sensor assembly in the existing soil temperature and humidity sensor, and is used to cooperate with the probe rod to collect soil temperature and humidity data. Since the roots of the planted trees will continuously extend, when the root system touches the probe rod 6, because the metal ball 5 can rotate freely in the collar 4, the root system will push against the probe rod 6 to drive the metal ball 5 to rotate in the collar 4 and deflect, so as to adapt to the pressure caused by the root system, enabling the probe rod 6 to deflect adaptively and ensuring that it will not be damaged by the thick root system of the tree. When the probe rod 6 deflects until it touches the collar 4 and cannot deflect further, the second annular copper sheet 28 touches the first annular copper sheet 27, causing the motor to be powered on and start at this time. The positive rotation of the motor output shaft drives the gear 12 to rotate, cooperating with the tooth teeth 13 to drive the probe rod 6 to rise, so that the probe rod 6 is retracted into the housing 1, completing the retraction of the probe rod 6. At this time, it can be avoided that the non-deflectable probe rod 6 is damaged by the continuously growing root system. At this time, the staff can install the housing 1 in another place, and then start the motor to reverse its output shaft. Conversely, the probe rod 6 can be lowered, extending it out of the housing 1 and straightening the probe rod 6. Start the electric push rod 9 to extend it, driving the limit plate 10 to descend, so as to clamp and fix the sphere 7 through the cooperation of the arc-shaped bayonet, realizing the positioning of the sphere 7 and the probe rod 6, and then insert it into the soil as above for use; when the probe rod 6 drives the sphere 7 to deflect until it is about to stop, the sphere 7 will press the annular plate 22 to drive the pressure rod 21 and the pressing plate 20 to descend, so as to squeeze the dye in the annular shell 16 outwards. The annular plate 22 compresses the spring 23 to cause it to deform and generate a force. At this time, the one-way valve in the second conduit 19 closes, and the dye enters the annular cavity 14 through the first conduit 17 and opens the one-way valve in the spray hole 15 to spray out, realizing the marking of the land. When the probe rod 6 is retracted into the housing 1, it can be known from the dye on the soil surface that there is a root system here and the probe rod 6 cannot be inserted further. When the sphere 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 opens, and the one-way valve in the spray hole 15 closes. As the pressing plate 20 rises and resets, the dye in the box body 18 is pumped into the annular shell 16 through the second conduit 19.

[0040] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it.

Claims

1. An agricultural greenhouse soil temperature and humidity sensor for smart agriculture, comprising a housing (1), characterized in that: An installation component for connecting it to the outside is provided on the outer side of the housing (1). 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 formed 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 driving component for driving the probe rod (6) to move vertically is provided inside the metal ball (5). A positioning component 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) through a wire (11).

2. The soil temperature and humidity sensor for smart agriculture greenhouse according to claim 1, wherein: The positioning component includes a sphere (7) fixedly connected to the upper part of the outer side of the probe rod (6). Horizontal plates (8) are symmetrically and fixedly installed on the inner wall of the housing (1). An electric push rod (9) is fixedly connected to the bottom end of the horizontal plate (8). The bottom ends of the telescopic ends of the two electric push rods (9) are jointly fixedly connected with a limiting plate (10). An arc-shaped bayonet for cooperating with the sphere (7) is formed in the middle of the bottom end of the limiting plate (10).

3. The agricultural greenhouse soil temperature and humidity sensor for smart agriculture according to claim 1, characterized in that: The driving component includes a pair of motors. Cavities are symmetrically formed inside the metal ball (5). The motors are fixedly installed in the corresponding cavities. The output shaft of the motor is fixedly connected with a gear (12). Teeth (13) for cooperating with the gear (12) are provided on the outer side of the probe rod (6). A first annular copper sheet (27) is fixedly installed at the bottom end of the collar (4). A second annular copper sheet (28) is fixedly connected to the bottom end of the metal ball (5).

4. The agricultural greenhouse soil temperature and humidity sensor for smart agriculture according to claim 2, characterized in that: An annular cavity (14) is provided inside the collar (4). Spray holes (15) communicating with the annular cavity (14) are equidistantly arranged around the bottom end of the collar (4). A liquid injection component for injecting a coloring liquid into the annular cavity (14) in cooperation with the sphere (7) is provided inside the housing (1).

5. The agricultural greenhouse soil temperature and humidity sensor for smart agriculture according to claim 4, wherein: The liquid injection component includes an annular shell (16) fixedly connected to the bottom wall of the housing (1). The annular shell (16) is communicated with the annular cavity (14) through a first conduit (17). A box body (18) is fixedly connected to the bottom wall of the housing (1). A liquid adding pipe communicating with the outside of the housing (1) is provided on the top of the box body (18). A plunger is provided at the end of the liquid adding pipe. The lower part of the box body (18) is communicated with the annular shell (16) through a second conduit (19). Check valves are provided in both the spray holes (15) and the second conduit (19). A pressing plate (20) is provided inside the annular shell (16). A pair of pressing rods (21) are fixedly connected to the top of the pressing plate (20). The top ends of the pair of pressing rods (21) extend outside the annular shell (16) and are jointly fixedly connected with an annular plate (22). Springs (23) are sleeved on the outside of the pressing rods (21).

6. The agricultural greenhouse soil temperature and humidity sensor for smart agriculture according to claim 5, characterized in that: An observation window is provided on the outer side of the housing (1). A glass plate is provided in the observation window. The box body (18) is made of glass.

7. The agricultural greenhouse soil temperature and humidity sensor for smart agriculture according to claim 1, characterized in that: The installation component includes a cylinder body (24) symmetrically and fixedly connected to the outer side of the housing (1), a bracket (25) is slidably installed between the two cylinder bodies (24), and a clamp (26) is fixedly connected to the upper part of the bracket (25).

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

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