Field temperature and humidity sensor protective cover with ventilation and heat insulation functions

Abstract

The utility model belongs to the technical field of agricultural monitoring protection devices, and discloses a field temperature and humidity sensor protection cover with ventilation and heat insulation functions, an outer layer cover is sleeved outside an inner layer cover, a heat insulation cavity is formed between the outer layer cover and the inner layer cover, and the outer part of the outer layer cover is communicated with the heat insulation cavity through a first air inlet hole formed in the conical outer wall of the outer layer cover; a first air outlet pipe at the top of the outer layer cover is communicated with the heat insulation cavity; through the double-layer structure design of the outer layer cover and the inner layer cover, the heat insulation cavity is formed between the outer layer cover and the inner layer cover, external heat can be effectively prevented from being transmitted to the inner layer, and temperature measurement deviation caused by heat accumulation is avoided; the heat insulation cavity and the inner-layer cover are both of a ventilation structure with air entering from the lower portion and air exiting from the upper portion, natural circulation is formed, the surface of the outer-layer cover is provided with a reflective film, the top of the outer-layer cover is provided with an umbrella-shaped cover, the comprehensive protection effect of rain prevention, sun protection, heat insulation and ventilation is achieved, and the measurement accuracy and stability of the field temperature and humidity sensor are improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of agricultural monitoring and protection devices, specifically relating to a protective cover for a field temperature and humidity sensor with ventilation and heat insulation functions. Background Technology

[0002] With the development of agricultural informatization and intelligentization, real-time monitoring of field environmental parameters has become an important means of precision crop management. Among them, temperature and humidity sensors, as key equipment in environmental monitoring systems, are widely deployed in farmland, greenhouses, and other places to collect environmental temperature and humidity data, providing a basis for crop growth regulation and environmental control. Due to the complex field environment, sensors are affected by external factors such as rain, direct sunlight, and dust during long-term use. Therefore, protective covers are usually installed to protect the sensors from rain, sun, and other physical factors.

[0003] However, most existing sensor protective covers adopt a single-layer structure, with only a rainproof top cover or sunshade shell on top of the sensor to block rainwater. Although this structure can prevent rainwater from directly entering the sensor to a certain extent, its ventilation and heat dissipation performance is poor. Especially in windless or light windy weather, a closed space easily forms inside the protective cover, causing heat to accumulate inside the cover. When external solar radiation is strong, the temperature inside the cover will rise significantly, causing the ambient temperature measured by the sensor to be higher than the actual field temperature. This results in a large error between the measurement results and the actual field temperature, affecting the accuracy and reliability of the data. Utility Model Content

[0004] This invention provides a protective cover for a field temperature and humidity sensor with ventilation and heat insulation functions, in order to solve the problem mentioned in the background art that heat easily accumulates inside the protective cover, leading to inaccurate temperature and humidity measurement results.

[0005] The technical solution adopted by this utility model is: a protective cover for a field temperature and humidity sensor with ventilation and heat insulation functions, including an outer cover and an inner cover fixedly connected. The outer cover is fitted outside the inner cover and forms a heat insulation cavity between them. The lower part of the outer cover is provided with a conical outer wall, and a first air inlet is opened at the position of the conical outer wall. The first air inlet connects the outside of the outer cover and the heat insulation cavity. The first air inlet is inclined from bottom to top. The top of the outer cover is provided with a first air outlet pipe, which is connected to the heat insulation cavity. A reflective film is provided on the outer surface of the outer cover.

[0006] The lower end of the inner cover is an open structure, and a cover body can be detachably installed at the lower end of the inner cover. A support column is connected to the center of the cover body. One end of the support column extends to the inner cavity of the inner cover and the end is connected to a mounting base. The mounting base is used to install the sensor.

[0007] The cover has a second air inlet in the thickness direction, which connects the inner cavity of the inner cover to the outside. The top of the inner cover has a second air outlet pipe, which is connected to the inner cavity of the inner cover.

[0008] The diameter of the second vent pipe is smaller than that of the first vent pipe, and the upper end of the second vent pipe extends into the interior of the first vent pipe. The second vent pipe and the first vent pipe are coaxially arranged.

[0009] The support column has a wire hole at its center, and the sensor wire is placed inside the wire hole and extends outward.

[0010] Several supports are provided between the outer cover and the inner cover, with the inner cover and the outer cover connected to each end of the supports respectively.

[0011] An umbrella-shaped cover is installed at the upper end of the first vent pipe, and a gap is formed between the first vent pipe and the inner wall of the umbrella-shaped cover.

[0012] The outer surface of the cover is provided with several raised strips extending outward along its axial direction, and the raised strips are evenly distributed around the center of the cover.

[0013] A telescopic rod is connected to the center of the cover.

[0014] The protective cover is equipped with a suspension structure.

[0015] The beneficial effects of this utility model are as follows:

[0016] This invention features a double-layer structure design with an outer cover and an inner cover, forming a heat insulation cavity between them. This effectively blocks external heat from being transferred to the inner layer, thus avoiding temperature measurement deviations caused by heat accumulation. At the same time, the heat insulation cavity adopts a ventilation structure with air intake at the bottom and air exhaust at the top. By utilizing the chimney effect, hot air inside the cavity continuously rises and is expelled, while air at the bottom is continuously replenished, forming a natural circulation that further enhances heat dissipation performance.

[0017] The inner cover of this utility model is also equipped with a lower air inlet and a top air outlet to ensure that the sensor has unobstructed contact with the outside air and to ensure the authenticity of the measured data. The outer cover is equipped with a reflective film to reflect solar radiation, and the top umbrella-shaped cover is used for rain and sun protection. The whole structure achieves a comprehensive protection effect of rain protection, sun protection, heat insulation and ventilation, which can improve the measurement accuracy and stability of field temperature and humidity sensors. Attached Figure Description

[0018] Figure 1 This is an overall structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram showing the tilt angle of the first air inlet of this utility model;

[0020] Figure 3This is a partial enlarged view of the outer cover of this utility model;

[0021] Figure 4 This is a structural diagram of the cover of this utility model.

[0022] in:

[0023] 1. Outer cover; 2. Inner cover; 3. Insulation cavity; 4. First air inlet; 5. Conical outer wall; 6. Second air inlet; 7. Wire hole; 8. Cover; 9. Protrusion; 10. Support column; 11. Mounting base; 12. Sensor; 13. First air outlet pipe; 14. Second air outlet pipe; 15. Umbrella-shaped cover; 16. Support frame; 17. Reflective film; 18. Hanging ring; 19. Telescopic rod. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figure 1-4 As shown, a protective cover for a field temperature and humidity sensor 12 with ventilation and heat insulation functions includes an outer cover 1 and an inner cover 2 fixedly connected. In this example, both the inner cover 2 and the outer cover 1 are made of weather-resistant engineering plastics, such as polycarbonate (PC), which have the characteristics of low thermal conductivity, high UV resistance, good aging resistance, and strong corrosion resistance. The outer cover 1 and the inner cover 2 can be integrally molded or have a separate structure, connected by threads. An outer cover 1 is fitted over the inner cover 2, forming a heat insulation cavity 3 between them. The heat insulation cavity 3 surrounds the inner cover 2, so that during use, the heat insulation cavity 3 acts as an air insulation layer, preventing excess heat from being transferred to the interior of the inner cover 2. A conical outer wall 5 is provided at the bottom of the outer cover 1, and a first air inlet 4 is provided at the position of the conical outer wall 5. The first air inlet 4 connects the outside of the outer cover 1 and the heat insulation cavity 3. The first air inlet 4 is inclined from bottom to top. Specifically, as shown... Figure 2As shown, the first air inlet 4 is inclined at 45°, allowing air to enter the insulation cavity 3 at a 45° angle, thus accelerating airflow and quickly expelling hot air from the insulation cavity 3. Furthermore, the structural design of the first air inlet 4 prevents external rainwater from entering the interior of the outer cover 1, providing better waterproofing compared to a through-hole structure perpendicular to the center line of the outer cover 1. The top of the outer cover 1 has a first air outlet 13 connected to the insulation cavity 3. A reflective film 17 is provided on the outer surface of the outer cover 1, its main function being to reflect external solar radiation heat and reduce the absorption of light energy on the surface of the outer cover 1, thereby significantly reducing the temperature rise of the entire protective cover due to sunlight.

[0026] The lower end of the inner cover 2 is an open structure. A cover 8 is detachably installed at the lower end of the inner cover 2. A support column 10 is connected to the center of the cover 8. One end of the support column 10 extends to the inner cavity of the inner cover 2 and is connected to a mounting seat 11. The mounting seat 11 is used to install the sensor 12. That is, the sensor 12 can be connected to the cover 8 through the support column 10. After the cover 8 is removed, the sensor 12 can be maintained or replaced. In this example, the cover 8 is installed at the lower end of the inner cover 2 by a threaded connection. It is understood that in other embodiments, the cover 8 can also be connected to the inner cover 2 by a snap-fit ​​method.

[0027] The cover 8 has a second air inlet 6 in the thickness direction. The second air inlet 6 is used to connect the inner cavity of the inner cover 2 with the outside. The top of the inner cover 2 is provided with a second air outlet 14, which is connected to the inner cavity of the inner cover 2 to realize normal air circulation inside the inner cover 2, so that the sensor 12 can accurately detect the temperature and humidity data of the on-site environment.

[0028] The diameter of the second vent pipe 14 is smaller than that of the first vent pipe 13, and the upper end of the second vent pipe 14 extends into the interior of the first vent pipe 13. The second vent pipe 14 and the first vent pipe 13 are coaxially arranged to form an interlocking exhaust channel, so that the ventilation paths of the inner cover 2 and the outer cover 1 are connected and not chaotic. When hot air rises from the inner cavity of the inner cover 2 and enters the second vent pipe 14, it can be smoothly discharged into the first vent pipe 13. The coaxial flow guiding design avoids airflow turbulence and heat backflow.

[0029] The support column 10 has a wire hole 7 in the center. The wire of the sensor 12 is placed in the wire hole 7 and extends outward. The wire hole 7 allows the signal line of the sensor 12 to pass through the support column 10 in an orderly manner and be led outward, avoiding the wire from being exposed to moisture or tangling, and improving the sealing and safety of the overall protective cover.

[0030] Several supports 16 are provided between the outer cover 1 and the inner cover 2. The two ends of the supports 16 are connected to the inner cover 2 and the outer cover 1, respectively. They are mainly used to reinforce the overall structure formed by the outer cover 1 and the inner cover 2 and improve the overall structural strength.

[0031] An umbrella-shaped cover 15 is installed at the upper end of the first vent pipe 13. A gap is formed between the first vent pipe 13 and the inner wall of the umbrella-shaped cover 15. The umbrella-shaped cover 15 can effectively block rainwater or debris from directly entering the interior of the first vent pipe 13. The gap reserved between the umbrella-shaped cover 15 and the vent pipe ensures that the airflow is discharged smoothly without affecting the ventilation and heat dissipation effect, thus achieving the function of both rain protection and exhaust.

[0032] The outer surface of the cover 8 is provided with a plurality of protrusions 9 extending outward along its axial direction. The protrusions 9 are evenly distributed around the center of the cover 8. In this example, the structure of the protrusions 9 is as follows: Figure 4 As shown, the cover is arranged in a cross shape. This design serves two purposes: firstly, it can be used as a handle for easy assembly and disassembly of the cover 8; secondly, it allows the entire protective cover to be placed in a designated location without obstructing the second air inlet 6, ensuring normal airflow. A telescopic rod 19 is connected to the center of the cover 8. The telescopic rod 19 can be fixed in the field, and the overall height of the protective cover can be adjusted as needed. The telescopic rod 19 can be installed at the bottom of the cover 8 using a threaded connection. Furthermore, when not in use, the protective cover and the telescopic rod 19 can be carried together, with the telescopic rod 19 able to be shortened to its shortest length for easy transport.

[0033] The protective cover is equipped with a suspension structure, which is mainly used to facilitate the suspension and installation of the entire protective cover. Specifically, the suspension structure is a hanging ring 18 set on the top of the umbrella-shaped cover 15, so that the protective cover can be hung in a designated position with a hook. With the help of the telescopic rod 19, the protective cover can be used for various installation methods.

[0034] In use, this protective cover for the field temperature and humidity sensor 12 with ventilation and heat insulation functions involves installing the temperature and humidity sensor 12 on the mounting base 11 inside the inner cover 2. The entire protective cover is fixed to a suitable location in the field environment via a suspension structure. Air enters the heat insulation cavity 3 between the outer cover 1 and the inner cover 2 through the first air inlet 4 at the bottom. When exposed to sunlight or when the cover is heated, the air temperature inside the heat insulation cavity 3 rises and its density decreases, causing it to rise and naturally exit through the first air outlet 13 at the top, forming a bottom-in, top-out air convection channel. This removes excess heat from the outer layer of the cover, acting as a chimney-like heat dissipation mechanism. At the same time, the reflective film 17 on the outer surface of the outer cover 1 reflects solar radiation, further reducing the surface temperature rise of the cover.

[0035] The inner cover 2 achieves air circulation through the second air inlet 6 on the cover 8 and the second air outlet 14 at the top, so that the sensor 12 is in a space connected to the outside air and can sense changes in ambient temperature and humidity in real time. Since the air insulation cavity 3 formed between the inner cover 2 and the outer cover 1 effectively blocks the direct transfer of external heat, the temperature change inside the inner cover 2 is relatively stable, ensuring the accuracy and stability of the data collected by the temperature and humidity sensor 12.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A field temperature and humidity sensor protective cover having a ventilation and heat insulation function, characterized in that, The application relates to a temperature sensor protection device, which comprises a fixedly connected outer cover and inner cover, the outer cover is sleeved outside the inner cover and a heat insulation cavity is formed between the outer cover and the inner cover, a conical outer wall is arranged at the lower part of the outer cover, a first air inlet hole is arranged at the position of the conical outer wall, the first air inlet hole is connected with the outside of the outer cover and the heat insulation cavity, the first air inlet hole is arranged in an inclined mode from bottom to top, a first air outlet pipe is arranged at the top of the outer cover, the first air outlet pipe is connected with the heat insulation cavity, an umbrella-shaped cover is arranged at the upper end of the first air outlet pipe, a light reflection film is arranged on the outer surface of the outer cover; the lower end of the inner cover is in an open structure, a cover body is detachably arranged at the lower end of the inner cover, a supporting column is connected with the center of the cover body, one end of the supporting column extends to the inner cavity position of the inner cover and an installation seat is connected with the end of the supporting column, the installation seat is used for installing a sensor, a second air inlet hole is arranged in the thickness direction of the cover body, the second air inlet hole is used for connecting the inner cavity of the inner cover with the outside, a second air outlet pipe is arranged at the top of the inner cover, the second air outlet pipe is connected with the inner cavity of the inner cover.

2. The field temperature and humidity sensor protective cover with ventilation and thermal insulation functions according to claim 1, characterized in that, The diameter of the second air outlet pipe is smaller than that of the first air outlet pipe, the upper end of the second air outlet pipe extends to the inner position of the first air outlet pipe, and the second air outlet pipe is coaxially arranged with the first air outlet pipe.

3. The field temperature and humidity sensor protective cover with ventilation and thermal insulation functions according to claim 1, characterized in that, A wire hole is arranged at the center of the supporting column, and the wire of the sensor is arranged in the wire hole and extends outward.

4. The field temperature and humidity sensor protective cover with ventilation and thermal insulation functions according to claim 1, characterized in that, A plurality of supporting frames are arranged between the outer cover and the inner cover, and the two ends of the supporting frames are connected with the inner cover and the outer cover respectively.

5. The field temperature and humidity sensor protective cover with ventilation and thermal insulation functions according to claim 1, characterized in that, A gap is formed between the first air outlet pipe and the inner wall of the umbrella-shaped cover.

6. The field temperature and humidity sensor protective cover with ventilation and thermal insulation functions according to claim 1, characterized in that, A plurality of convex strips are arranged on the outer surface of the cover body and extend outward along the axial direction of the cover body, and the convex strips are uniformly distributed around the center of the cover body.

7. The field temperature and humidity sensor protective cover with ventilation and thermal insulation functions according to claim 1, characterized in that, A telescopic rod is connected with the center of the cover body.

8. The field temperature and humidity sensor protective cover with ventilation and thermal insulation functions according to claim 1, characterized in that, A hanging structure is arranged on the protection cover.

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