High-frequency radar liquid level meter for signal analysis and processing

Abstract

The utility model discloses a high-frequency radar liquid level meter for signal analysis and processing, which relates to the field of radar liquid level meters, and comprises a signal processor and an antenna structure, the high-frequency radar liquid level meter for signal analysis and processing plays a role in adjusting the opening and closing angle of the antenna structure in the signal processor; the distraction structure is fixed on the outer side of the sliding structure of the adjusting structure and plays a role in controlling the radiation angle of the antenna structure in the adjusting structure; the antenna structure of the radar liquid level meter is of a straight cylinder type deployable design, compared with an existing horn-shaped antenna, the straight cylinder type design can conduct measurement in a water body with a small pipe diameter, the radiation angle of the horn-shaped antenna is large, interference echoes are possibly generated on a container wall or an internal structure, and therefore the accuracy of liquid level measurement is affected. The antenna structure is designed to be deployable, so that the size of the radiation angle can be adjusted, and the measurement accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the field of radar level gauges, in particular to a high-frequency radar level gauge for signal analysis and processing. Background Art

[0002] High-frequency radar level meter is an instrument that uses high-frequency radar waves to measure liquid level. Its basic working principle is to transmit high-frequency radar waves and then receive the echo signal reflected from the surface of the measured material to calculate the distance between the medium and the probe, and then determine the liquid level.

[0003] The antennas of existing high-frequency radar level meters are mostly horn-shaped. The horn-shaped antenna has a large radiation angle, which may cause interference echoes on the container wall or internal structure, thereby affecting the accuracy of liquid level measurement. In addition, the bottom width of the horn-shaped antenna is large and cannot be inserted into a smaller pipe diameter. It is impossible to measure water bodies with a smaller pipe diameter. There is room for improvement in the structure. Utility Model Content

[0004] The purpose of the utility model is to provide a high-frequency radar level meter for signal analysis and processing to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-frequency radar level meter for signal analysis and processing, comprising a signal processor and an antenna structure, wherein the antenna structure is fixedly connected to the bottom end of the signal processor;

[0006] An adjustment structure, the adjustment structure is fixed in an opening at the bottom of a processor body of the signal processor, and plays a role in adjusting the opening and closing angle of the antenna structure in the signal processor;

[0007] The support structure is fixed on the outside of the sliding structure of the adjustment structure, and plays a role in controlling the radiation angle of the antenna structure in the adjustment structure.

[0008] Preferably, the signal processor comprises a processor body and an adjustment structure. An opening is formed at the bottom end of the processor body, and the adjustment structure is fixedly connected in the opening.

[0009] Preferably, the antenna structure includes a mounting plate, an outer antenna and an inner antenna. The bottom of the mounting plate is rotatably connected to the outer antenna via a rotating shaft. Three groups of outer antennas are provided and are evenly arranged at the bottom of the mounting plate. Grooves are provided inside the outer antennas, and the inner antennas are slidably connected to the grooves of two adjacent groups of outer antennas.

[0010] Preferably, the bottom of the adjustment structure passes through the mounting plate and slides on the inner walls of the three groups of outer antennas.

[0011] Preferably, the adjustment structure comprises a sliding structure and a support structure, the support structure is fixedly connected to the outer side of the bottom of the sliding structure, and three groups of the support structures are symmetrically arranged on the outer side of the bottom of the sliding structure.

[0012] Preferably, the sliding structure includes a support rod, a first spring, a connecting piece, a mounting slot, a limit rod and a metal hook. The top end of the support rod is fixedly connected to the connecting piece through the first spring. Three groups of mounting slots are opened on the outer side of the top of the support rod. A limit rod is inserted in a single group of mounting slots. The bottom end of the support rod is fixedly connected to a metal hook.

[0013] Preferably, the expansion structure comprises a first expansion rod, a second spring and two expansion rods, one end of the first expansion rod is fixedly connected to the support rod, and the other end of the first expansion rod is fixedly connected to the two expansion rods via the second spring.

[0014] Preferably, a circular opening is provided on the outer side of the processor body at a position corresponding to the limit rod of the adjustment structure, and the circular opening corresponds to the installation slot.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model proposes a high-frequency radar level meter for signal analysis and processing, comprising a signal processor and an antenna structure, wherein the bottom end of the signal processor is fixedly connected with the antenna structure; an adjustment structure, wherein the adjustment structure is fixed in an opening provided at the bottom end of a processor body of the signal processor, and plays a role in adjusting the opening and closing angle of the antenna structure in the signal processor; and a support structure, wherein the support structure is fixed on the outside of a sliding structure of the adjustment structure, and plays a role in controlling the radiation angle of the antenna structure in the adjustment structure; the antenna structure of the radar level meter is a straight-tube expandable design, and compared with the existing horn-shaped antenna, the straight-tube design can perform measurements in water bodies with smaller pipe diameters, and the horn-shaped antenna has a larger radiation angle, which may cause interference echoes on the container wall or internal structure, thereby affecting the accuracy of liquid level measurement, and the expandable design of the antenna structure can adjust the size of the radiation angle, thereby improving the accuracy during measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings:

[0018] Figure 1 Schematic diagram of the high frequency radar level meter for signal analysis and processing of the utility model Figure 1 ;

[0019] Figure 2 Schematic diagram of the high frequency radar level meter for signal analysis and processing of the utility model Figure 2 ;

[0020] Figure 3The schematic diagram of the adjustment structure of the high-frequency radar level meter for signal analysis and processing of the utility model Figure 1 ;

[0021] Figure 4 The schematic diagram of the adjustment structure of the high-frequency radar level meter for signal analysis and processing of the utility model Figure 2 .

[0022] In the figure: 1. signal processor; 2. antenna structure; 3. processor body; 4. adjustment structure; 5. mounting plate; 6. outer antenna; 7. inner antenna; 8. sliding structure; 9. support structure; 10. support rod; 11. first spring; 12. connector; 13. mounting slot; 14. limit rod; 15. metal hook; 16. one section of support rod; 17. second spring; 18. two sections of support rod. DETAILED DESCRIPTION

[0023] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in combination with the accompanying drawings by way of examples.

[0024] It should be noted that many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0025] In addition, in the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] In the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. However, if it is indicated as a direct connection, it means that the two connected bodies are not connected through an intermediate structure, but are connected to form a whole only through a connecting structure. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0027] In the present utility model, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0028] Embodiment 1

[0029] See also Figures 1 to 4 , the utility model provides a technical solution: a high-frequency radar level meter for signal analysis and processing, comprising a signal processor 1 and an antenna structure 2, wherein the bottom end of the signal processor 1 is fixedly connected to the antenna structure 2;

[0030] The adjustment structure 4 is fixed in an opening at the bottom of the processor body 3 of the signal processor 1, and plays a role in adjusting the opening and closing angle of the antenna structure 2 in the signal processor 1;

[0031] The support structure 9 is fixed to the outside of the sliding structure 8 of the adjustment structure 4, and plays a role in controlling the radiation angle of the antenna structure 2 in the adjustment structure 4;

[0032] The antenna structure 2 of the radar level meter is of a straight-tube expandable design. Compared with the existing horn-shaped antenna, the straight-tube design can perform measurements in water bodies with smaller diameters. The horn-shaped antenna has a larger radiation angle, which may cause interference echoes on the container wall or internal structure, thereby affecting the accuracy of the liquid level measurement. The expandable design of the antenna structure 2 can adjust the size of the radiation angle, thereby improving the accuracy of the measurement.

[0033] Embodiment 2

[0034] On the basis of the first embodiment, the signal processor 1 comprises a processor body 3 and an adjustment structure 4. The bottom end of the processor body 3 is provided with an opening, and the adjustment structure 4 is fixedly connected in the opening.

[0035] The antenna structure 2 includes a mounting plate 5, an outer antenna 6 and an inner antenna 7. The bottom of the mounting plate 5 is rotatably connected to the outer antenna 6 via a rotating shaft. The outer antenna 6 is provided with three groups and is evenly arranged at the bottom of the mounting plate 5. A groove is provided inside the outer antenna 6. The inner antenna 7 is slidably connected to the grooves of two adjacent groups of outer antennas 6.

[0036] The bottom of the adjustment structure 4 passes through the mounting plate 5 and slides on the inner walls of the three groups of outer antennas 6;

[0037] When in use, the antenna structure 2 is inserted into the cylinder to be measured, and the antenna structure 2 transmits and receives signals, which are transmitted to the antenna structure 2 for analysis and processing. When measuring the liquid level height in different cylinder diameters, the outer antenna 6 can be recovered and unfolded by operating the adjustment structure 4 to adapt to different usage scenarios for measurement.

[0038] Embodiment 3

[0039] On the basis of the second embodiment, the adjustment structure 4 includes a sliding structure 8 and a support structure 9. The support structure 9 is fixedly connected to the outer side of the bottom of the sliding structure 8. The support structure 9 is provided in three groups and is symmetrically arranged on the outer side of the bottom of the sliding structure 8.

[0040] The sliding structure 8 includes a support rod 10, a first spring 11, a connecting piece 12, a mounting slot 13, a limiting rod 14 and a metal hook 15. The top of the support rod 10 is fixedly connected to the connecting piece 12 through the first spring 11. Three groups of mounting slots 13 are opened on the outer side of the top of the support rod 10. The limiting rod 14 is inserted in a single group of mounting slots 13. The bottom of the support rod 10 is fixedly connected to the metal hook 15.

[0041] The expansion structure 9 includes a first expansion rod 16, a second spring 17 and a second expansion rod 18, one end of the first expansion rod 16 is fixedly connected to the support rod 10, and the other end of the first expansion rod 16 is fixedly connected to the second expansion rod 18 via the second spring 17;

[0042] A circular opening is provided on the outer side of the processor body 3 at the position corresponding to the limit rod 14 of the adjustment structure 4, and the circular opening corresponds to the installation slot 13;

[0043] When adjusting the width of the bottom of the antenna structure 2, the external curved hook is inserted into the antenna structure 2 and hung on the metal hook 15, and the metal hook 15 is stretched downward. The metal hook 15 drives the support rod 10 to move downward, and the first spring 11 is elongated under the action of the tension. As the support rod 10 moves downward, the installation slot 13 moves synchronously. At this time, the limiting rod 14 can be inserted into the corresponding installation slot 13. At this time, the limiting rod 14 inserted into the installation slot 13 and the circular opening limits the support rod 10 to prevent the support rod 10 from resetting upward under the elastic force of the first spring 11. At this time, the external curved hook is removed, and the support rod 10 moves downward and drives the support structure 9 to move downward. The two-section expansion rod 18 of the support structure 9 expands the outer antenna 6 outward, thereby expanding the width of the bottom of the antenna structure 2, and the second spring 17 plays a buffering role.

[0044] A person skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention, including the claims, is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0045] The utility model is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. A high-frequency radar level meter for signal analysis and processing, comprising a signal processor (1) and an antenna structure (2), characterized in that: The bottom end of the signal processor (1) is fixedly connected to an antenna structure (2); An adjustment structure (4), the adjustment structure (4) being fixed in an opening provided at the bottom end of a processor body (3) of the signal processor (1), and having a function of adjusting the opening and closing angle of the antenna structure (2) in the signal processor (1); The support structure (9) is fixed on the outside of the sliding structure (8) of the adjustment structure (4), and plays a role in controlling the radiation angle of the antenna structure (2) within the adjustment structure (4).

2. The high-frequency radar level meter for signal analysis and processing according to claim 1, characterized in that: The signal processor (1) comprises a processor body (3) and an adjustment structure (4); an opening is provided at the bottom end of the processor body (3), and the adjustment structure (4) is fixedly connected in the opening.

3. The high-frequency radar level meter for signal analysis and processing according to claim 1, characterized in that: The antenna structure (2) comprises a mounting plate (5), an outer antenna (6) and an inner antenna (7); the bottom end of the mounting plate (5) is rotatably connected to the outer antenna (6) via a rotating shaft; three groups of outer antennas (6) are provided and are evenly arranged at the bottom end of the mounting plate (5); grooves are provided inside the outer antennas (6); and two adjacent groups of outer antennas (6) are slidably connected to the inner antennas (7) in the grooves.

4. The high-frequency radar level meter for signal analysis and processing according to claim 1, characterized in that: The bottom of the adjustment structure (4) passes through the mounting plate (5) and slides on the inner walls of the three groups of outer antennas (6).

5. The high-frequency radar level meter for signal analysis and processing according to claim 1, characterized in that: The adjustment structure (4) comprises a sliding structure (8) and an expansion structure (9); the expansion structure (9) is fixedly connected to the outside of the bottom of the sliding structure (8); and the expansion structure (9) is provided in three groups and is symmetrically arranged on the outside of the bottom of the sliding structure (8).

6. The high-frequency radar level meter for signal analysis and processing according to claim 5, characterized in that: The sliding structure (8) comprises a support rod (10), a first spring (11), a connecting piece (12), a mounting slot (13), a limiting rod (14) and a metal hook (15); the top end of the support rod (10) is fixedly connected to the connecting piece (12) via the first spring (11); three groups of mounting slots (13) are provided on the outer side of the top of the support rod (10); a limiting rod (14) is inserted into a single group of mounting slots (13); and the bottom end of the support rod (10) is fixedly connected to the metal hook (15).

7. The high-frequency radar level meter for signal analysis and processing according to claim 5, characterized in that: The expansion structure (9) comprises a first expansion rod (16), a second spring (17) and a second expansion rod (18); one end of the first expansion rod (16) is fixedly connected to the support rod (10), and the other end of the first expansion rod (16) is fixedly connected to the second expansion rod (18) via the second spring (17).

8. The high-frequency radar level meter for signal analysis and processing according to claim 2, characterized in that: A circular opening is provided on the outside of the processor body (3) at a position corresponding to the limiting rod (14) of the adjustment structure (4), and the circular opening corresponds to the installation slot (13).

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