Sensor for testing temperatures of soil at different depths

Abstract

The utility model discloses a sensor for testing the temperature of soil at different depths, which comprises a lifting frame, a screw rod is rotatably mounted in the lifting frame, a motor connected with the screw rod is fixedly mounted on the upper end face of the lifting frame, and a movable sleeve is mounted on the outer wall of the screw rod through a limiting mechanism in a threaded manner. The outer wall of the moving sleeve is fixedly connected with a temperature sensor through a connecting mechanism, and the bottom wall of the temperature sensor is fixedly provided with a transmitting probe and a plurality of receiving probes. According to the utility model, through the arrangement of the components such as the screw rod, the moving block and the receiving probes, the screw rod continuously rotates and enables the transmitting probe and the plurality of receiving probes to descend into the soil, so that the situation that the transmitting probe and the receiving probes cannot descend into the soil due to the fact that the soil is relatively hard is avoided; therefore, the heights of the high-precision thermistors are different, so that the high-precision thermistors can detect the temperature of soil at different depths.

Description

Technical Field

[0001] The utility model relates to the technical field of soil temperature detection, in particular to a sensor for testing soil temperatures at different depths. Background Art

[0002] Soil temperature detection refers to the process of measuring and recording soil temperature at different depths below the ground. This process is of great significance for understanding soil temperature conditions, guiding agricultural production, and conducting scientific research.

[0003] Products that monitor soil temperatures at different depths in real time can optimize agricultural production, help farmers accurately irrigate and plant, and improve crop survival, yield, and quality. They can also be used for environmental monitoring and assessing ecosystem health. In existing technologies, most soil temperature detection devices rely on manual on-site measurements or empirical predictions based on weather temperatures. A sensor can only measure the soil temperature value at a single height, which has certain limitations during use. It is impossible to simultaneously detect soil temperatures at different depths, which makes it insufficiently practical. Therefore, it is necessary to redesign sensors for testing soil temperatures at different depths to address the above issues. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a sensor for testing soil temperatures at different depths.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A sensor for testing soil temperatures at different depths comprises a lifting frame, a screw being rotatably installed inside the lifting frame, a motor connected to the screw being fixedly installed on the upper end surface of the lifting frame, a movable sleeve being threadedly installed on the outer wall of the screw through a limiting mechanism, a temperature sensor being fixedly connected to the outer wall of the movable sleeve through a connecting mechanism, a transmitting probe and multiple receiving probes being fixedly installed on the bottom wall of the temperature sensor, a conductive module being fixedly installed on the outer wall of the transmitting probe through a first mounting groove, a second mounting groove being provided on the outer wall of each receiving probe, a plurality of the second mounting grooves being arranged in a stepped shape, a high-precision thermistor being fixedly installed inside each of the second mounting grooves, a bottom plate being fixedly installed on the outer bottom wall of the lifting frame, a mounting plate being fixedly connected to the upper end surface of the bottom plate through a connecting mechanism, and a plurality of cleaning sleeves being fixedly installed on the upper end surface of the mounting plate.

[0007] Preferably, the limiting mechanism includes a limiting rod fixedly installed inside the lifting frame, and the limiting rod slides through the movable sleeve.

[0008] Preferably, the connection mechanism includes a connection rod fixedly mounted on the outer wall of the movable sleeve, and the end of the connection rod is fixedly connected to the upper end surface of the temperature sensor.

[0009] Preferably, the connecting mechanism comprises two connecting plates fixedly mounted on the upper end surface of the base plate, and the ends of the two connecting plates are fixedly connected to the outer wall of the mounting plate.

[0010] Preferably, handles are fixedly mounted on the outer walls on both sides of the lifting frame, and anti-slip sleeves are fixedly mounted on the outer walls of the two handles.

[0011] Preferably, two pedals are fixedly mounted on the upper end surface of the base plate, and the upper end surfaces of the two pedals are both provided with a plurality of anti-slip grooves.

[0012] Beneficial effects of the utility model:

[0013] 1. By setting up components such as a screw, a moving block and a receiving probe, the screw continuously rotates to lower the transmitting probe and multiple receiving probes into the soil, thereby preventing the transmitting probe and the receiving probe from being unable to descend into the soil due to hard soil. Since each second mounting groove is distributed in a stepped manner, each high-precision thermistor is located at a different height, thereby enabling each high-precision thermistor to detect soil temperatures at different depths.

[0014] 2. By setting up components such as the base plate, pedal and cleaning cover, the lifting frame is placed on the ground through the cooperation of the base plate, and then the foot can be placed on the upper end surface of the pedal, so that the pedal can press the base plate downward to increase the stability of the lifting frame. Multiple cleaning covers can wipe the dirt on the outer walls of the transmitting probe and multiple receiving probes to prevent the dirt from adhering to the outer walls of the transmitting probe and multiple receiving probes and affecting subsequent use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of a sensor for measuring soil temperature at different depths proposed by the present invention;

[0016] Figure 2 This is a side view schematic diagram of the structure of a sensor for measuring soil temperature at different depths proposed by the present invention;

[0017] Figure 3 This is a schematic diagram of the top view of the sensor for measuring soil temperature at different depths proposed by the present invention;

[0018] Figure 4 for Figure 1 A schematic diagram of the structure enlargement at point A;

[0019] Figure 5 for Figure 1 A magnified schematic diagram of the structure at point B in FIG.

[0020] In the figure: 1 lifting frame, 2 screw, 3 motor, 4 limit rod, 5 moving sleeve, 6 connecting rod, 7 temperature sensor, 8 transmitting probe, 9 receiving probe, 10 handle, 11 anti-slip sleeve, 12 bottom plate, 13 pedal, 14 connecting plate, 15 mounting plate, 16 cleaning sleeve. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] Reference Figure 1-5 , a sensor for testing soil temperature at different depths, includes a lifting frame 1, a screw 2 is rotatably installed inside the lifting frame 1, a motor 3 connected to the screw 2 is fixedly installed on the upper end surface of the lifting frame 1, and a movable sleeve 5 is threadedly installed on the outer wall of the screw 2 through a limiting mechanism, and the limiting mechanism includes a limiting rod 4 fixedly installed inside the lifting frame 1, and the limiting rod 4 slides through the movable sleeve 5. The limiting rod 4 can limit the movable sleeve 5 so that the movable sleeve 5 can only move axially along the outer wall of the screw 2. The outer wall of the movable sleeve 5 is fixedly connected with a temperature sensor 7 through a connecting mechanism, and the connecting mechanism includes a connecting rod 6 fixedly installed on the outer wall of the movable sleeve 5, and the end of the connecting rod 6 is fixedly connected to the upper end surface of the temperature sensor 7.

[0023] A transmitting probe 8 and multiple receiving probes 9 are fixedly installed on the bottom wall of the temperature sensor 7. A conductive module is fixedly installed on the outer wall of the transmitting probe 8 through a first mounting groove. A second mounting groove is provided on the outer wall of each receiving probe 9. The multiple second mounting grooves are arranged in a stepped shape. A high-precision thermistor is fixedly installed inside each second mounting groove. Handles 10 are fixedly installed on the outer walls of both sides of the lifting frame 1. Anti-slip covers 11 are fixedly installed on the outer walls of the two handles 10. A bottom plate 12 is fixedly installed on the outer bottom wall of the lifting frame 1. Two pedals 13 are fixedly installed on the upper end surface of the bottom plate 12. The upper end surfaces of the two pedals 13 are provided with multiple anti-slip grooves. The upper end surface of the bottom plate 12 is fixedly connected to the mounting plate 15 through a connecting mechanism. The connecting mechanism includes two connecting plates 14 fixedly installed on the upper end surface of the bottom plate 12. The ends of the two connecting plates 14 are fixedly connected to the outer wall of the mounting plate 15. Multiple cleaning covers 16 are fixedly installed on the upper end surface of the mounting plate 15.

[0024] When the present invention is in use, the lifting frame 1 can be carried by the cooperation of the handle 10 and the anti-slip sleeve 11. Before detecting the soil temperature, the lifting frame 1 can be placed on the ground through the cooperation of the bottom plate 12. Then the foot can be placed on the upper end surface of the stepping pedal 13, so that the stepping pedal 13 can squeeze the bottom plate 12 downward. The anti-slip tooth groove can increase the anti-slip effect when stepping on. Then the motor 3 can drive the screw rod 2 to rotate. When the screw 2 rotates, it can drive the movable sleeve 5 to move by cooperating with the limit rod 4. The movable sleeve 5 then drives the temperature sensor 7 to move downward through the cooperation of the connecting rod 6, so that the temperature sensor 7 drives a transmitting probe 8 and multiple receiving probes 9 to descend through multiple cleaning sleeves 16. The screw 2 continues to rotate and causes the transmitting probe 8 and multiple receiving probes 9 to descend into the soil. This can increase the smoothness of the transmitting probe 8 and the receiving probe 9 inserting into the soil, and avoid the transmitting probe 8 and the receiving probe 9 being unable to descend into the soil due to hard soil.

[0025] High-precision thermistors are installed on the outer walls of multiple receiving probes 9 to detect the temperature of the soil. Changes in soil temperature will cause changes in the resistance of the high-precision thermistors. The high-precision thermistors are connected to the internal voltage divider circuit and the voltage acquisition circuit. The temperature sensor 7 deduces the soil temperature based on the acquired voltage. Since each second mounting groove is distributed in a stepped manner, each high-precision thermistor is located at a different height, so that each high-precision thermistor can detect the soil temperature at different depths. When the detection is completed, the motor 3 can drive the screw 2 to reverse. Under the reverse drive of the screw 2, the transmitting probe 8 and the multiple receiving probes 9 can be removed from the soil, and in the process of the transmitting probe 8 and the multiple receiving probes 9 rising, they pass through the inside of the multiple cleaning sleeves 16. At this time, the multiple cleaning sleeves 16 can wipe the soil on the outer walls of the transmitting probe 8 and the multiple receiving probes 9, thereby realizing automatic cleaning of the transmitting probe 8 and the multiple receiving probes 9, and preventing soil from adhering to the outer walls of the transmitting probe 8 and the multiple receiving probes 9 and affecting subsequent use.

[0026] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A sensor for measuring soil temperature at different depths, comprising a lifting frame (1), characterized in that: A screw rod (2) is rotatably mounted inside the lifting frame (1), a motor (3) connected to the screw rod (2) is fixedly mounted on the upper end surface of the lifting frame (1), a movable sleeve (5) is threadedly mounted on the outer wall of the screw rod (2) through a limiting mechanism, the outer wall of the movable sleeve (5) is fixedly connected to a temperature sensor (7) through a connecting mechanism, a transmitting probe (8) and a plurality of receiving probes (9) are fixedly mounted on the bottom wall of the temperature sensor (7), a conductive module is fixedly mounted on the outer wall of the transmitting probe (8) through a first mounting groove, a second mounting groove is opened on the outer wall of each receiving probe (9), and the plurality of second mounting grooves are arranged in a stepped shape, and a high-precision thermistor is fixedly mounted inside each of the second mounting grooves, a bottom plate (12) is fixedly mounted on the outer bottom wall of the lifting frame (1), the upper end surface of the bottom plate (12) is fixedly connected to a mounting plate (15) through a connecting mechanism, and a plurality of cleaning sleeves (16) are fixedly mounted on the upper end surface of the mounting plate (15).

2. The sensor for measuring soil temperature at different depths according to claim 1, characterized in that: The limiting mechanism comprises a limiting rod (4) fixedly mounted inside the lifting frame (1), and the limiting rod (4) slides through the movable sleeve (5).

3. The sensor for measuring soil temperature at different depths according to claim 2, characterized in that: The connection mechanism comprises a connection rod (6) fixedly mounted on the outer wall of the movable sleeve (5), and an end of the connection rod (6) is fixedly connected to the upper end surface of the temperature sensor (7).

4. The sensor for measuring soil temperature at different depths according to claim 3, characterized in that: The connecting mechanism comprises two connecting plates (14) fixedly mounted on the upper end surface of the base plate (12), and the ends of the two connecting plates (14) are fixedly connected to the outer wall of the mounting plate (15).

5. The sensor for measuring soil temperature at different depths according to claim 4, characterized in that: Handles (10) are fixedly mounted on the outer walls of both sides of the lifting frame (1), and anti-slip sleeves (11) are fixedly mounted on the outer walls of the two handles (10).

6. The sensor for measuring soil temperature at different depths according to claim 5, characterized in that: Two pedals (13) are fixedly mounted on the upper end surface of the base plate (12), and the upper end surfaces of the two pedals (13) are both provided with a plurality of anti-slip tooth grooves.

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