Carbon dioxide in-situ monitoring system

Abstract

The utility model discloses a carbon dioxide in-situ monitoring system and relates to the technical field of soil monitoring. Comprising a measuring box which is internally provided with a carbon dioxide sensor and is in communication connection with a monitoring unit; the measuring box comprises an upper measuring part and a lower measuring part, the lower measuring part is used for being installed on a soil layer, the middle of the lower measuring part is of a through structure, and an annular protrusion is arranged at the position, corresponding to the contour edge of the through structure, of the bottom of the lower measuring part; the lower measuring part is provided with a supporting column which is vertically and upwards arranged relative to the lower measuring part; the upper measuring part comprises a cover body and a measuring chamber located at the upper end of the cover body, the side edge of the measuring chamber is connected with the supporting column in a sliding sleeve mode and can slide up and down relative to the supporting column, so that the cover body can correspondingly cover the annular sealing structure at the edge of the through structure of the lower measuring part, and an in-situ measuring cavity corresponding to soil is formed. The soil carbon flux measuring device has the measuring capacity of high portability and simplified operation process, and can meet the requirement of soil carbon flux measurement.

Description

Technical Field

[0001] The utility model belongs to the technical field of soil monitoring, and particularly relates to a carbon dioxide in-situ monitoring system. Background Art

[0002] As global climate change increasingly impacts the ecological environment, soil, as one of the largest terrestrial carbon reservoirs on Earth, has a profound impact on the global carbon balance through its carbon cycle. Measuring soil carbon flux is a key technique for assessing soil's function as a carbon source or sink. It is crucial for understanding the role of soil in global climate change, assessing the impact of land use change on soil carbon storage, and developing land management strategies.

[0003] Although existing soil carbon flux measurement devices provide a certain degree of data support for research, they lack portability, operational complexity, measurement accuracy, stability, and adaptability and repeatability under multiple environmental conditions. These limitations restrict their widespread application in field observations and may lead to biased and unreliable data, affecting the accuracy of long-term monitoring and comparative studies.

[0004] Therefore, the development of a novel soil carbon flux measurement system is particularly urgent. This system needs to be highly portable and have a simplified operation process, enabling rapid deployment in various field environments. It should also possess excellent measurement accuracy and stability to ensure the reliability of the acquired data. Furthermore, the system design should fully consider adaptability to changing environments, as well as durability and repeatability for long-term monitoring. Utility Model Content

[0005] The purpose of this utility model is to overcome the above-mentioned defects and propose a carbon dioxide in situ monitoring system with high portability, simplified operation process, high-precision and high-stability measurement capabilities, as well as good environmental adaptability and repeatability to meet the needs of soil carbon flux measurement.

[0006] The specific technical solutions are as follows:

[0007] The carbon dioxide in-situ monitoring system is used for in-situ monitoring of carbon dioxide in soil, including a measurement box, a carbon dioxide sensor installed in the measurement box and connected to the monitoring unit; including:

[0008] The measuring box includes an upper measuring part and a lower measuring part, wherein the lower measuring part is used to be installed on the soil layer, the middle of the lower measuring part is a through structure, and the bottom of the lower measuring part is provided with an annular protrusion corresponding to the contour edge of the through structure; the lower measuring part is provided with a support column arranged vertically upward relative to the lower measuring part;

[0009] The upper measuring part includes a cover body and a measuring chamber located at the upper end of the cover body. The side of the measuring chamber is connected to the support column sliding sleeve and can slide up and down relative to the support column, so that the cover body can correspond to the cover on the annular sealing structure at the edge of the through-structure of the lower measuring part, and form an in-situ measurement cavity corresponding to the soil; a carbon dioxide sensor corresponding to the in-situ measurement cavity is installed on the measuring chamber, and a multi-interface plug-in board extending into the cover is provided at one end of the measuring chamber corresponding to the cover, and the multi-interface plug-in board is used to plug in the soil environment sensor;

[0010] The measuring chamber is provided with a controller electrically connected to the carbon dioxide sensor and the multi-interface plugboard, and the controller is communicatively connected to the monitoring unit;

[0011] The multiple function expansion slots in the measurement chamber can be used to expand and install function modules.

[0012] Furthermore, in the above solution, two support columns are provided and are symmetrically arranged, and the tops of the support columns are connected by a handle.

[0013] Furthermore, the above solution is provided with a limit rod between the upper parts of the support columns, and the limit rod is located below the handle; an electric telescopic rod is provided between the limit rod and the upper measuring part, which is used to drive the upper measuring part to slide up and down along the support columns.

[0014] Furthermore, in the above solution, the annular protrusion is a thin plate structure with a height of 2-3 cm.

[0015] Furthermore, the above solution is that the outer side edge of the lower measuring part is also provided with a foldable fixing structure, the fixing structure includes a folding piece and a fixing nail, one end of the folding piece is hinged to the lower measuring part, and the other end is hinged to the fixing nail; the lower measuring part is provided with a groove corresponding to the placement of the folding piece, so that the folding piece can be relatively flipped and folded in the groove, and the fixing nail can be folded relative to the folding piece.

[0016] Furthermore, in the above solution, an air pressure balancing mechanism communicating with the corresponding cover body is installed in the measuring chamber.

[0017] Furthermore, in the above solution, a wireless module is provided in the measuring chamber, and the controller is connected to the monitoring unit via the wireless module.

[0018] Furthermore, in the above solution, a GPS or Beidou satellite positioning module is provided in the measurement room and is connected to a controller.

[0019] Compared with the existing technology, the beneficial effects of the present invention are:

[0020] The utility model improves the portability of measurement and the simplicity of operation, making the measurement of soil carbon flux more flexible and convenient.

[0021] The utility model enhances environmental adaptability and repeatability, enables the system to be used in a wider range of regions and conditions, and improves the universality of research. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the functional framework of the utility model;

[0023] Figure 2 It is a structural schematic diagram of the measuring box of the utility model.

[0024] In the accompanying drawings, 1-upper measuring part, 2-lower measuring part, 3-carbon dioxide sensor, 4-monitoring unit, 5-annular protrusion, 6-support column, 7-cover, 8-measuring chamber, 9-annular sealing structure, 10-multi-interface plug-in board, 11-controller, 12-function expansion slot, 13-handle, 14-limit rod, 15-electric telescopic rod, 16-wireless module, 17-Beidou satellite positioning module. DETAILED DESCRIPTION

[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] Example 1

[0027] like Figure 1 As shown, the utility model discloses a carbon dioxide in-situ monitoring system for in-situ monitoring of carbon dioxide in soil, including a measuring box, in which a carbon dioxide sensor 3 is provided and is communicatively connected to a monitoring unit 4, specifically, via a data bus and a power line.

[0028] The measuring box includes an upper measuring part 1 and a lower measuring part 2. The lower measuring part 2 is used to be installed on the soil layer. The middle of the lower measuring part 2 is a through structure. The bottom of the lower measuring part 2 is provided with an annular protrusion 5 corresponding to the contour edge of the through structure; the lower measuring part 2 is provided with a support column 6 arranged vertically upward relative to the lower measuring part 2.

[0029] The upper measuring part 1 includes a cover body 7 and a measuring chamber 8 located at the upper end of the cover body 7. The side of the measuring chamber 8 is connected to the support column 6 by a sliding sleeve and can slide up and down relative to the support column 6, so that the cover body 7 can correspond to the cover on the annular sealing structure 9 at the edge of the through structure of the lower measuring part 2, and form an in-situ measurement cavity corresponding to the soil; the measuring chamber 8 is installed with a carbon dioxide sensor 3 corresponding to the in-situ measurement cavity, and the measuring chamber 8 is provided with a multi-interface plug-in board 10 extending into the cover at one end corresponding to the cover, and the multi-interface plug-in board 10 is used to plug in the soil environment sensor.

[0030] The measuring chamber 8 is provided with a controller 11 electrically connected to the carbon dioxide sensor 3 and the multi-interface board 10, and the controller 11 is communicatively connected to the monitoring unit 4. The measuring chamber 8 is provided with a plurality of function expansion slots 12 for expanding and installing function modules.

[0031] The utility model does not need to be measured after being guided out through the airway by an air pump, thus avoiding the problem of air blockage in the airway, and the operation process is simpler and the response speed is faster. The function expansion slot 12 is a small compartment separated by a partition board, which is used to place new function modules.

[0032] In order to enhance the portability and portability of the measuring box, two support columns 6 are provided and symmetrically arranged, and the tops of the support columns 6 are connected by handles 13. Here, the support column 6 and the handle 13 can be integrally formed, and an anti-slip sleeve is provided at the handle 13.

[0033] To enhance system automation and sampling continuity, a limit rod 14 is installed between the upper portions of the support columns 6, located below the handle 13. An electric telescopic rod 15 is installed between the limit rod 14 and the upper measuring unit 1, driving the upper measuring unit 1 to slide up and down along the support columns 6. To power the electric telescopic rod 15, a battery slot can be provided on the corresponding limit rod 14 or support column 6. Of course, the power supply can also be located within the measuring chamber 8, which is the core concept of the present invention.

[0034] In order to better form the in-situ measurement cavity, the annular protrusion 5 is provided with a thin plate structure with a height of 2 cm. When in use, the annular protrusion 5 is inserted into the soil to avoid the existence of contact gaps.

[0035] Furthermore, the above solution further comprises a foldable fixing structure on the outer side of the lower measuring portion 2. The fixing structure comprises a folding member and a fixing pin. One end of the folding member is hinged to the lower measuring portion 2, and the other end is hinged to the fixing pin. The lower measuring portion 2 is provided with a groove corresponding to the folding member, so that the folding member can be flipped and folded relative to the groove, and the fixing pin can be folded relative to the folding member. By utilizing the foldable fixing structure on the outer side of the lower measuring portion 2, the folding member and the fixing pin can be used to secure the measuring box when in use and folded and stored when not in use. This is not shown in the accompanying drawings, but reference should be made to the prior art.

[0036] Example 2

[0037] Building on the above solution, the function expansion slot 12 within measurement chamber 8 is utilized to expand and install a wireless module 16 and a Beidou satellite positioning module 17. Wireless module 16 enables controller 11 to wirelessly connect to monitoring unit 4. This allows monitoring unit 4 to be located nearby during actual outdoor monitoring, ensuring wireless communication and enabling unmanned automated monitoring. Furthermore, a pressure balancing mechanism is installed within measurement chamber 8, communicating with the corresponding housing 7 to prevent monitoring errors caused by excessive pressure in the in-situ measurement chamber.

[0038] The operating principles of this utility model include: First, the upper and lower parts of the measuring box are designed to allow the upper measuring section 1 and lower measuring section 2 to slide relative to each other and separate. This eliminates the need for multiple installations during repeated monitoring. The upper measuring section 1 only needs to be lifted to initialize data before being reassembled. In automated monitoring, this operation is achieved by using an electric telescopic rod 15, which only needs to be controlled. The carbon dioxide sensor 3 is installed within the measuring chamber 8, corresponding to the in-situ measuring cavity, to avoid air blockage issues, simplifying the operation process and facilitating faster response. The measuring chamber 8 also includes a multi-interface plug-in board 10 for functional expansion. For example, it can be connected to a soil temperature and humidity sensor and is located in the soil corresponding to the in-situ measuring cavity. This allows relevant data to be collected under the same environmental conditions, ensuring the accuracy and stability of the entire monitoring process. The controller 11 processes the data collected by the sensors and transmits the data to the monitoring unit 4 via the wireless module 16, enabling remote monitoring. The positioning module 17 provides precise location information of the monitoring point, facilitating geographic analysis of the data. The function expansion slot 12 allows additional monitoring functions to be added as needed, such as soil moisture, temperature, etc., to improve the monitoring capability of the system.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of the patent application of the present invention. All equivalent changes, equivalent replacements or modified changes within the technical spirit and principles suggested by the present invention should be included in the scope of patent protection covered by the present invention.

Claims

1. A carbon dioxide in-situ monitoring system for in-situ monitoring of carbon dioxide in soil, comprising a measuring box equipped with a carbon dioxide sensor and communicatively connected to a monitoring unit; characterized by: The measuring box includes an upper measuring part and a lower measuring part, wherein the lower measuring part is used to be installed on the soil layer, the middle of the lower measuring part is a through structure, and the bottom of the lower measuring part is provided with an annular protrusion corresponding to the contour edge of the through structure; the lower measuring part is provided with a support column arranged vertically upward relative to the lower measuring part; The upper measuring part includes a cover body and a measuring chamber located at the upper end of the cover body. The side of the measuring chamber is connected to the support column sliding sleeve and can slide up and down relative to the support column, so that the cover body can correspond to the cover on the annular sealing structure at the edge of the through-structure of the lower measuring part, and form an in-situ measurement cavity corresponding to the soil; a carbon dioxide sensor corresponding to the in-situ measurement cavity is installed on the measuring chamber, and a multi-interface plug-in board extending into the cover is provided at one end of the measuring chamber corresponding to the cover, and the multi-interface plug-in board is used to plug in the soil environment sensor; The measuring chamber is provided with a controller electrically connected to the carbon dioxide sensor and the multi-interface plugboard, and the controller is communicatively connected to the monitoring unit; The multiple function expansion slots in the measurement chamber can be used to expand and install function modules.

2. The carbon dioxide in-situ monitoring system according to claim 1, characterized in that: Two support columns are provided and are symmetrically arranged, and the tops of the support columns are connected by a handle.

3. The carbon dioxide in-situ monitoring system according to claim 1, characterized in that: A limit rod is provided between the upper parts of the support columns, and the limit rod is located below the handle; an electric telescopic rod is provided between the limit rod and the upper measuring part, which is used to drive the upper measuring part to slide up and down along the support columns.

4. The carbon dioxide in-situ monitoring system according to claim 1, characterized in that: The annular protrusion is a thin plate structure with a height of 2-3 cm.

5. The carbon dioxide in-situ monitoring system according to claim 1, characterized in that: The outer side edge of the lower measuring part is also provided with a foldable fixing structure, which includes a folding piece and a fixing nail. One end of the folding piece is hinged to the lower measuring part, and the other end is hinged to the fixing nail. The lower measuring part is provided with a groove for placing the corresponding folding piece, so that the folding piece can be relatively flipped and folded in the groove, and the fixing nail can be folded relative to the folding piece.

6. The carbon dioxide in-situ monitoring system according to claim 1, characterized in that: The measuring chamber is provided with an air pressure balancing mechanism which is in communication with the corresponding cover body.

7. The carbon dioxide in-situ monitoring system according to claim 1, characterized in that: A wireless module is provided in the measuring chamber, and the controller is connected to the monitoring unit via the wireless module.

8. The carbon dioxide in-situ monitoring system according to claim 1, characterized in that: The measuring room is provided with a GPS or Beidou satellite positioning module and is connected to a controller.

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