Rice field water level gauge

Abstract

The utility model relates to the technical field of rice field water level monitoring, and discloses a rice field water level gauge. The rice field water level gauge comprises a limiting plate, a main nail and an auxiliary nail are fixedly installed below the limiting plate, a limiting pipe is movably installed above the limiting plate, a connecting block is movably installed above the limiting pipe, a capacitance type water level sensor is fixedly installed above the connecting block, and the capacitance type water level sensor is fixedly installed above the limiting pipe. During installation, vertically downward force can be applied to the main nails and the auxiliary nails by stepping on the limiting plate, so that the main nails and the auxiliary nails penetrate into soil, the bottom surface of the limiting plate is kept in a contact state with the soil, and after installation is completed, the soil can support the limiting plate and prevent the limiting plate from deflecting; meanwhile, the auxiliary nails can limit the rotating angle of the limiting plate, so that the capacitance type water level sensor is prevented from inclining after installation is completed, and deviation between monitoring data and actual data is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of paddy field water level monitoring, and specifically to a paddy field water level gauge. Background Art

[0002] As a main tool for measuring and monitoring water levels, water level gauges are widely used in various places, such as the measurement of boiler water levels, reservoir water levels, river water levels, paddy field water levels, etc.

[0003] The existing Chinese utility model patent with the reference publication number: CN218035149U discloses a low-power integrated paddy field water level gauge, which includes a measurement head and a measurement rod. A capacitive water level sensor is arranged at the lower end of the measurement rod, and a first connection structure is arranged on the outer side of the upper end of the measurement rod. The capacitive water level sensor is connected to the first connection structure through a power supply circuit. A power supply is arranged inside the measurement head, and a second connection structure is arranged on the inner side of the lower end of the measurement head. The power supply is connected to the second connection structure. The measurement head is sleeved on the upper end of the measurement rod and the first connection structure and the second connection structure are arranged opposite to each other. The power supply can supply power to the capacitive water level sensor through the second connection structure, the first connection structure and the power supply circuit. In addition to measuring the water level, this water level gauge can also measure other data by arranging multiple other types of capacitive water level sensors at the bottom of the measurement rod, and realize power supply and communication through the power supply circuit, the first connection structure and the second connection structure. At the same time, it can take corrosion prevention into account and improve the service life of the water level gauge.

[0004] Existing farmland water level gauges generally reflect the liquid level change by changing the resistance of a resistor through the up and down movement of a floating ball. Due to the influence of farmland water quality and crops, the floating ball may be blocked by sundries and crop leaves in the farmland water during the up and down movement, resulting in an error between the monitored data and the actual data. At the same time, the existing farmland water level gauges cannot maintain a vertical state after installation. When the device is in an inclined state, it will cause the liquid level change amount to be greater than the actual change amount, affecting the monitoring accuracy. Summary of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] In view of the deficiencies of the prior art, the utility model provides a paddy field water level gauge, which has the advantages of being able to avoid the influence of sundries and crop leaves in the water on the monitored data and keeping the device in a vertical state, thus solving the above technical problems.

[0007] (2) Technical Solutions

[0008] To achieve the above object, the present utility model provides the following technical solutions: a paddy field water level gauge, comprising: a limiting plate, a main nail and a secondary nail are fixedly installed below the limiting plate, a limiting tube is movably installed above the limiting plate, a connecting block is movably installed above the limiting tube, a capacitive water level sensor is fixedly installed above the connecting block, a connecting wire and a connecting tube are fixedly installed above the capacitive water level sensor, a filter screen is fitted and installed between the connecting tube and the limiting tube, a bracket is movably installed above the connecting tube, a fixing tube is movably installed above the bracket, and an RTU module is fixedly installed above the fixing tube; the connecting block can facilitate the connection between the capacitive water level sensor and the limiting tube.

[0009] As a preferred technical solution of the present utility model, the limiting plate is of a disc structure, a groove fitted with the external thread structure of the limiting tube is provided at the center of the top surface of the limiting plate, the main nail is fixedly installed at the center of the bottom surface of the limiting plate, and the secondary nails are fixed in an "X" shape at an equal 90-degree angle with the center of the limiting plate outside the main nail below the limiting plate; the limiting plate can facilitate applying a downward force to the main nail and can keep the bracket in a vertical state.

[0010] As a preferred technical solution of the present utility model, the limiting tube is movably connected to the limiting plate through a thread structure, a groove fitted with the external thread structure of the connecting block is provided at the top end of the limiting tube, and a movable connection is formed between the connecting block and the limiting tube; the limiting tube can connect the limiting plate and the connecting block and limit the position of the lower end of the filter screen.

[0011] As a preferred technical solution of the present utility model, the capacitive water level sensor is movably connected between the connecting block and the limiting tube, and annular groove structures fitted with the filter screen are provided at the bottom end of the connecting tube and the top end of the limiting tube; the capacitive water level sensor can facilitate monitoring the water level.

[0012] As a preferred technical solution of the present utility model, the filter screen is installed outside the capacitive water level sensor through the connecting tube and the limiting tube, and a tubular cavity is left between the filter screen and the capacitive water level sensor; the filter screen can play a filtering role.

[0013] As a preferred technical solution of the present utility model, the connecting tube and the fixing tube are of a hollow structure, the bracket is of a hollow through structure, the lower end of the bracket is movably connected to the capacitive water level sensor through the thread structure outside the top end of the connecting tube, and the upper end of the bracket is movably connected to the RTU module through the fixing tube; the connecting tube can limit the position of the upper end of the filter screen and connect the capacitive water level sensor and the bracket.

[0014] As a preferred technical solution of the present utility model, the lower end of the connecting wire passes through the connecting pipe and is connected to the capacitive water level sensor, and the upper end of the connecting wire passes through the bracket and the fixed pipe and is connected to the RTU module. An electrical connection is formed between the RTU module and the capacitive water level sensor through the connecting wire; the RTU module can transmit the liquid level information to the data platform through wireless transmission.

[0015] Compared with the prior art, the present utility model provides a paddy field water level meter, which has the following beneficial effects:

[0016] 1. Through the setting of the limiting plate in the present utility model, the limiting plate is of a disc structure, the main nail is fixedly installed at the center of the bottom surface of the limiting plate, and the secondary nails are fixedly arranged in an "X" shape at an angle of 90 degrees with the center of the limiting plate outside the main nail below the limiting plate. When installing, the limiting plate can be stepped on to apply a vertically downward force to the main nail and the secondary nails, so that the main nail and the secondary nails penetrate into the soil, and the bottom surface of the limiting plate is kept in contact with the soil. After installation, the soil will support the limiting plate and prevent the limiting plate from deflecting. At the same time, the secondary nails will also limit the rotation angle of the limiting plate, thereby avoiding the inclination of the capacitive water level sensor after installation and avoiding the deviation between the monitored data and the actual data.

[0017] 2. Through the setting of the filter screen in the present utility model, the filter screen is of a cylindrical tubular structure. The filter screen is installed outside the capacitive water level sensor through the annular groove structure at the bottom end of the connecting pipe and the top end of the limiting pipe, and there is a tubular cavity between the filter screen and the capacitive water level sensor. After installation, the water in the paddy field will pass through the filter screen and enter the cavity between the filter screen and the capacitive water level sensor. The impurities and crop leaves in the water will be blocked by the filter screen and will not contact the capacitive water level sensor. The capacitive water level sensor can be equivalent to a capacitor. Since the dielectric constant of water is different from that of air, when the water level change is detected, it will cause a change in capacitance. The capacitive water level sensor adopts a hierarchical scanning technology to dynamically analyze various parameters of the capacitive water level sensor in the medium, automatically perform dielectric constant correction and temperature compensation, and output a digital signal related to the water level height to the RTU module to reflect the water level change. This method can avoid the influence of impurities and crop leaves in the water on the monitored data. Description of the Drawings

[0018] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 is a schematic diagram of the installation structure of the main nail and the secondary nail of the present utility model;

[0020] Figure 3 is a schematic diagram of the connection structure between the capacitive water level sensor and the filter screen of the present utility model;

[0021] Figure 4 Schematic diagram of the connection structure between the RTU module and the bracket of the present utility model;

[0022] Wherein: 1. Limit plate; 11. Main nail; 12. Sub-nail; 13. Limit tube; 14. Connection block; 15. Capacitive water level sensor; 16. Connection wire; 17. Connection pipe; 18. Filter screen; 19. Bracket; 110. Fixed tube; 111. RTU module. Specific embodiments

[0023] The following further describes the embodiments of the present utility model in detail with reference to the drawings and examples. The following examples are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0024] In the description of the present utility model, unless otherwise specified, "a plurality of" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0025] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0026] Please refer to Figure 1 - Figure 4 , in this embodiment, the paddy field water level gauge includes: a limit plate 1, a main nail 11 and a sub-nail 12 are fixedly installed below the limit plate 1, a limit tube 13 is movably installed above the limit plate 1, a connection block 14 is movably installed above the limit tube 13, a capacitive water level sensor 15 is fixedly installed above the connection block 14, a connection wire 16 and a connection pipe 17 are fixedly installed above the capacitive water level sensor 15, a filter screen 18 is fitted and installed between the connection pipe 17 and the limit tube 13, a bracket 19 is movably installed above the connection pipe 17, a fixed tube 110 is movably installed above the bracket 19, and an RTU module 111 is fixedly installed above the fixed tube 110.

[0027] The limit plate 1 is of a disc structure. A groove that fits with the external thread structure of the limit tube 13 is provided at the center of the top surface of the limit plate 1. The main nail 11 is fixedly installed at the center of the bottom surface of the limit plate 1. The secondary nails 12 are fixed in an "X" shape at an equal 90-degree angle with the center of the limit plate 1 outside the main nail 11 below the limit plate 1.

[0028] The limit tube 13 is movably connected to the limit plate 1 through a thread structure. A groove that fits with the external thread structure of the outside of the connection block 14 is provided at the top end of the limit tube 13. A movable connection is formed between the connection block 14 and the limit tube 13.

[0029] The capacitive water level sensor 15 is movably connected to the limit tube 13 through the connection block 14. An annular groove structure that fits with the filter net 18 is provided at the bottom end of the connecting pipe 17 and the top end of the limit tube 13.

[0030] The filter net 18 is installed outside the capacitive water level sensor 15 through the connecting pipe 17 and the limit tube 13, and a tubular cavity is left between the filter net 18 and the capacitive water level sensor 15.

[0031] The connecting pipe 17 and the fixed pipe 110 are of a hollow structure. The bracket 19 is of a hollow through structure. The lower end of the bracket 19 is movably connected to the capacitive water level sensor 15 through the thread structure outside the top end of the connecting pipe 17. The upper end of the bracket 19 is movably connected to the RTU module 111 through the fixed pipe 110.

[0032] The lower end of the connecting wire 16 passes through the connecting pipe 17 and is connected to the capacitive water level sensor 15. The upper end of the connecting wire 16 passes through the bracket 19 and the fixed pipe 110 and is connected to the RTU module 111. The RTU module 111 is electrically connected to the capacitive water level sensor 15 through the connecting wire 16.

[0033] Specifically, the limit plate 1 can facilitate applying a downward force to the main nail 11 and can keep the bracket 19 in a vertical state. The main nail 11 can limit the position of the limit plate 1. The secondary nails 12 can prevent the bracket 19 from tilting. The limit tube 13 can connect the limit plate 1 and the connection block 14 and limit the position of the lower end of the filter net 18. The connection block 14 can facilitate the connection between the capacitive water level sensor 15 and the limit tube 13. The capacitive water level sensor 15 can facilitate monitoring the water level. The connecting wire 16 can facilitate data transmission. The connecting pipe 17 can limit the position of the upper end of the filter net 18 and connect the capacitive water level sensor 15 to the bracket 19. The filter net 18 can play a filtering role. The bracket 19 can keep the RTU module 111 at a high position to facilitate the signal transmission of the RTU module 111. The fixed pipe 110 can facilitate the connection between the RTU module 111 and the bracket 19 and allow the connecting wire 16 to pass through. The RTU module 111 can transmit the liquid level information to the data platform through wireless transmission.

[0034] When in use, the limit plate 1 is of a disc structure. The main nail 11 is fixedly installed at the center of the bottom surface of the limit plate 1. The secondary nails 12 are fixedly arranged in an "X" shape at an equal 90-degree angle with the center of the limit plate 1 outside the main nail 11 below the limit plate 1. When installing, a vertically downward force can be applied to the main nail 11 and the secondary nails 12 by stepping on the limit plate 1, so that the main nail 11 and the secondary nails 12 penetrate into the soil, and the bottom surface of the limit plate 1 remains in contact with the soil. After the installation is completed, the soil will support the limit plate 1 and prevent the limit plate 1 from deflecting. At the same time, the secondary nails 12 will also limit the rotation angle of the limit plate 1, so as to avoid the capacitive water level sensor 15 tilting after the installation is completed, so as to avoid the deviation between the monitoring data and the actual data. The filter screen 18 is of a cylindrical tubular structure. The filter screen 18 is installed outside the capacitive water level sensor 15 through the annular groove structure at the top end of the limiting pipe 13 at the bottom end of the connecting pipe 17. And there is a tubular cavity between the filter screen 18 and the capacitive water level sensor 15. After the installation is completed, the water in the paddy field will pass through the filter screen 18 and enter the cavity between the filter screen 18 and the capacitive water level sensor 15. The impurities and crop leaves in the water will be blocked by the filter screen 18 and will not contact the capacitive water level sensor 15. The capacitive water level sensor 15 can be equivalent to a capacitor. Since the dielectric constant of water is different from that of air, when the water level change is detected, it will cause a change in capacitance. The capacitive water level sensor 15 adopts a layered scanning technology to dynamically analyze various parameters of the capacitive water level sensor 15 in the medium, automatically perform dielectric constant correction and temperature compensation, and output a digital signal related to the water level height to the RTU module 111 to reflect the water level change. This method can avoid the influence of impurities and crop leaves in the water on the monitoring data.

[0035] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A paddy field water level meter, characterized in that: include: A limit plate (1), wherein a main nail (11) and a secondary nail (12) are fixedly installed below the limit plate (1), a limit tube (13) is movably installed above the limit plate (1), a connecting block (14) is movably installed above the limit tube (13), a capacitive water level sensor (15) is fixedly installed above the connecting block (14), a connecting wire (16) and a connecting tube (17) are fixedly installed above the capacitive water level sensor (15), a filter screen (18) is embedded and installed between the connecting tube (17) and the limit tube (13), a bracket (19) is movably installed above the connecting tube (17), a fixed tube (110) is movably installed above the bracket (19), and an RTU module (111) is fixedly installed above the fixed tube (110).

2. The paddy field water level meter according to claim 1, characterized in that: The limiting plate (1) is a disc structure, and a groove is provided at the center of the top surface of the limiting plate (1) to engage with the outer thread structure of the limiting tube (13). The main nail (11) is fixedly installed at the center of the bottom surface of the limiting plate (1), and the auxiliary nail (12) is fixed to the outer side of the main nail (11) below the limiting plate (1) in an "X" shape at an angle of ninety degrees with the center of the limiting plate (1) as a reference.

3. The paddy field water level meter according to claim 1, characterized in that: The limiting tube (13) is movably connected to the limiting plate (1) via a threaded structure, and a groove is provided at the top end of the limiting tube (13) for engaging with the threaded structure on the outside of the connecting block (14), so that a movably connected connection is formed between the connecting block (14) and the limiting tube (13).

4. The paddy field water level meter according to claim 1, characterized in that: The capacitive water level sensor (15) is movably connected to the limit tube (13) via a connecting block (14); the bottom end of the connecting tube (17) and the top end of the limit tube (13) are provided with an annular groove structure engaged with the filter screen (18).

5. The paddy field water level meter according to claim 1, characterized in that: The filter screen (18) is installed on the outside of the capacitive water level sensor (15) through a connecting pipe (17) and a limit pipe (13), and a tubular cavity is left between the filter screen (18) and the capacitive water level sensor (15).

6. The paddy field water level meter according to claim 1, characterized in that: The connecting pipe (17) and the fixing pipe (110) are hollow structures, the bracket (19) is a hollow through-structure, the lower end of the bracket (19) is movably connected to the capacitive water level sensor (15) through a threaded structure on the outer side of the top end of the connecting pipe (17), and the upper end of the bracket (19) is movably connected to the RTU module (111) through the fixing pipe (110).

7. The paddy field water level meter according to claim 1, characterized in that: The lower end of the connecting wire (16) passes through the connecting pipe (17) and is connected to the capacitive water level sensor (15), and the upper end of the connecting wire (16) passes through the bracket (19) and the fixing pipe (110) and is connected to the RTU module (111), and the RTU module (111) is electrically connected to the capacitive water level sensor (15) via the connecting wire (16).

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