A wind speed and direction monitoring instrument based on ultrasonic measurement principle

Abstract

The utility model discloses a meteorological monitoring equipment technical field's wind speed and direction monitoring instrument based on ultrasonic wave measurement principle, include: by the center base that anticorrosive aluminum alloy is made, the cavity that accommodates installation signal processing circuit board is opened to the center base inside, and is equipped with standard support interface under the center base, the center base has the support arm that makes of high -strength engineering plastics in the even radial extension of circumferential direction, and the main body of each support arm is the main flow ridge of cross section and shows drop -like airfoil, and the hollow wiring channel is opened to support arm inside along the length direction, the one reflection surface that a plurality of support arms are away from the center base one end common connection, support arm is close to the center base one end and is provided with transducer installation assembly, the utility model discloses can guarantee the measurement accuracy, and the structural stability of sensor under complex outdoor environment, anti -interference ability and long -term durability are improved significantly.

Description

Technical Field

[0001] This utility model relates to a wind speed and direction monitoring instrument based on the ultrasonic measurement principle, belonging to the technical field of meteorological monitoring equipment. Background Technology

[0002] An ultrasonic anemometer is an instrument that measures wind speed and direction by utilizing the characteristic that the speed of ultrasonic waves propagating in air is affected by airflow. Its basic working principle is to calculate wind speed and direction by measuring the time difference between the propagation of an ultrasonic pulse along a fixed path with and against the wind. Existing ultrasonic anemometers typically contain multiple ultrasonic transducers arranged in a specific spatial geometry.

[0003] To obtain accurate measurement results, the acoustic wave propagation path between transducers needs to remain stable, and interference from the external environment should be minimized. Traditional installation structures often use simple brackets to cantilever the transducers. Under strong wind conditions, especially with turbulence or gusts, the support members of this cantilever structure are prone to vibration or slight deformation, introducing errors into high-precision ultrasonic time-of-flight measurements and affecting the accuracy and reliability of the measurements. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a wind speed and direction monitoring instrument based on the ultrasonic measurement principle, which can significantly improve the structural stability, anti-interference ability and long-term durability of the sensor in complex outdoor environments while ensuring measurement accuracy.

[0005] To achieve the above objectives, this utility model employs the following technical solution:

[0006] In a first aspect, this utility model provides a wind speed and direction monitoring instrument based on the ultrasonic measurement principle, comprising: a central base made of corrosion-resistant aluminum alloy, wherein the central base has an internal cavity for accommodating and mounting a signal processing circuit board, and a standard bracket interface is provided below the central base; the central base has a plurality of support arms made of high-strength engineering plastic extending radially and uniformly along the circumference, each support arm having a main flow ridge with a teardrop-shaped airfoil cross-section, and a hollow wiring channel is provided inside the support arm along its length; one end of the plurality of support arms is away from the central base. A common reflective surface is connected to the support arm. A transducer mounting assembly is provided at one end of the support arm near the central base. The assembly includes a connecting flange connected to the end of the support arm by bolts, a damping ring bonded to the connecting flange, a transducer mounting base connected to the damping ring by bolts and with a thin leaf spring embedded inside, and a spindle-shaped flow guide shield mounted on the transducer mounting base. The ultrasonic transducer is sealed and installed inside the flow guide shield. The middle sidewalls of the multiple support arms are connected by short support rods to a concentric ring-shaped flow stabilizer, and the ring cross-section of the flow stabilizer is streamlined.

[0007] Furthermore, auxiliary reinforcing ribs are symmetrically distributed on both sides of the main flow ridge of the support arm, and the auxiliary reinforcing ribs are integrally formed with the main flow ridge.

[0008] Furthermore, the front center of the flow guide shield has a circular acoustic window, and the acoustic window is provided with a mesh grid composed of fine radial and annular ribs.

[0009] Furthermore, the turbulence stabilizer is made of aluminum-magnesium alloy and its diameter is smaller than the circumference formed by the midpoints of the three support arms.

[0010] Furthermore, the support arm is integrally injection molded using a mold.

[0011] Furthermore, the flow guide shield is made of ABS engineering plastic.

[0012] Compared with the prior art, the beneficial effects achieved by this utility model are as follows:

[0013] This solution significantly improves the rigidity and resistance to bending deformation of the overall frame by employing a one-piece molded support arm with an airfoil-like cross-section and internal reinforcement structure, effectively resisting strong wind loads. Combined with a multi-stage buffer connection mechanism at the end of the support arm, it actively absorbs and dissipates energy generated by wind-induced vibrations, greatly suppressing micro-vibrations at the transducer mounting location. This fundamental improvement in mechanical stability directly ensures the geometric stability of the ultrasonic wave propagation path, reducing measurement errors introduced by minor structural changes from a physical perspective, and guaranteeing the accuracy and reliability of wind speed and direction data, with particularly pronounced advantages in environments with strong winds and significant fluctuations. Attached Figure Description

[0014] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments and descriptions of this utility model are used to explain this utility model and do not constitute an undue limitation thereof. In the drawings:

[0015] Figure 1 This is a schematic diagram of a wind speed and direction monitoring instrument based on the ultrasonic measurement principle, provided for an embodiment of this utility model.

[0016] In the diagram: 1. Central base; 2. Support arm; 3. Connecting flange; 4. Damping ring; 5. Transducer mounting base; 6. Thin leaf spring; 7. Flow guide shield; 8. Ultrasonic transducer; 9. Turbulence stabilizer; 10. Short support rod. Detailed Implementation

[0017] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0018] The following detailed description is exemplary and intended to provide further detailed explanation of the present invention. Unless otherwise specified, all technical terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this invention.

[0019] Example:

[0020] An ultrasonic wind speed and direction monitoring instrument includes a disc-shaped central base 1 made of corrosion-resistant aluminum alloy, which houses a signal processing circuit board. A standard bracket interface is located below the central base 1 for mounting on a weather tower. Three support arms 2 extend radially and uniformly from the central base 1. Each support arm 2 is integrally injection molded from a high-strength engineering plastic (such as glass fiber reinforced nylon), and its main body is a prominent dominant flow ridge with a teardrop-shaped airfoil cross-section, a smooth leading edge, and a tapered trailing edge. On both sides of the dominant flow ridge, symmetrically distributed, slightly lower auxiliary reinforcing ribs form a rigid integral structure together with the dominant flow ridge. Hollow wiring channels are formed along the length of the dominant flow ridge.

[0021] Three support arms 2, located away from the central base 1, share a common reflective surface at their ends. Each support arm 2, near the central base 1, is connected to a transducer mounting assembly. This assembly includes: a connecting flange 3 bolted to the end of the support arm 2; a damping ring 4 made of soft silicone material, one side of which is bonded to the connecting flange 3; a metal transducer mounting base 5, its bottom bolted to the other side of the damping ring 4, with star-shaped radially arranged leaf springs 6 embedded within the connecting surface; and a spindle-shaped flow guide shield 7 made of ABS engineering plastic, tightly mounted on the transducer mounting base 5 using snap-fits and sealing rings. The flow guide shield 7 has a tapered head and tail, and a bulging center to accommodate the transducer. A circular acoustic window is located at the center of the front end of the flow guide shield 7, containing a mesh grille composed of fine radial and annular ribs. The ultrasonic transducer 8 is sealed inside the flow guide shield 7, its wires introduced into the central base 1 through a wiring channel.

[0022] A concentric ring-shaped flow stabilizer 9 made of aluminum-magnesium alloy is installed at the middle of the three support arms 2. This flow stabilizer 9 is firmly connected to the middle sidewalls of the three support arms 2 via three short support rods 10. The ring cross-section of the flow stabilizer 9 is also streamlined, and its diameter is slightly smaller than the circumference formed by the middle of the support arms 2. During assembly, it is essential to ensure that the sound wave emitting / receiving surfaces of the three ultrasonic transducers 8 are precisely aligned to form a stable measurement path. During instrument operation, the airflow becomes smoother after being pre-treated by the flow stabilizer 9, and then flows through the streamlined surface of the support arms 2 and the external flow guide shield 7 of the transducers, minimizing the impact on the structure and the resulting vibrations. Even if vibrations occur, they are effectively absorbed by the multi-stage buffer connection mechanism. This mechanical structure provides a highly stable platform and optimized airflow environment for ultrasonic measurements.

[0023] The ultrasonic anemometer and wind vane provided in this embodiment have the following significant advantages:

[0024] I. By employing an integrated support arm with an airfoil-like cross-section and internal reinforcement structure, the rigidity and resistance to bending deformation of the overall frame are significantly improved, effectively resisting strong wind loads. Combined with the "multi-stage buffer connection mechanism" at the end of the support arm, it can actively absorb and dissipate the energy generated by wind-induced vibrations, greatly suppressing the micro-vibrations at the transducer mounting location. This fundamental improvement in mechanical stability directly ensures the geometric stability of the ultrasonic wave propagation path, reducing measurement errors introduced by minor structural changes from a physical perspective, and guaranteeing the accuracy and reliability of wind speed and direction data, especially in environments with strong winds and severe fluctuations.

[0025] Second, the unique "airflow guide shield" design, with its spindle shape, efficiently guides wind, rain, and snow to pass smoothly over its surface, minimizing the possibility of rain and snow adhesion and dust accumulation. The fine mesh grille at the front provides physical protection while having negligible impact on sound waves and airflow. This design protects the core transducer chip from direct impact and contamination by severe weather, while also avoiding the introduction of additional airflow disturbances due to the addition of protective facilities, achieving a high degree of balance between protective performance and measurement accuracy.

[0026] Third, an innovative "concentric ring-shaped turbulence stabilizer" was introduced. This component is not merely a simple structural reinforcement; its core function lies in aerodynamic optimization. It pre-processes the airflow before it reaches the central measurement area, effectively dispersing potentially large-scale unstable vortices, resulting in smoother airflow and reduced turbulence along the acoustic path between transducers. This provides a cleaner and more stable medium for ultrasonic signal propagation, reducing the interference of airflow fluctuations on time-of-flight measurements and improving the instrument's performance under complex wind conditions.

[0027] IV. The overall structural design fully considers the needs of long-term outdoor use. Streamlined components reduce wind pressure and lower the risk of material fatigue. Effective protection reduces contaminant accumulation, meaning longer maintenance cycles and simpler cleaning. All cables are built into the cable routing channels of the support arm, which not only keeps the appearance neat but also avoids aging and damage caused by long-term exposure to ultraviolet rays and wind and rain, improving the service life and reliability of the entire instrument system.

[0028] As is known from common technical knowledge, this utility model can be implemented through other embodiments that do not depart from its spirit or essential characteristics. Therefore, the disclosed embodiments described above are merely illustrative in all respects and are not the only ones. All modifications within the scope of this utility model or its equivalents are included in this utility model.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of this utility model. Any modifications or equivalent substitutions that do not depart from the spirit and scope of this utility model should be covered within the protection scope of the claims of this utility model.

Claims

1. A wind speed and direction monitoring instrument based on the ultrasonic measurement principle, characterized in that, include: A central base (1) made of corrosion-resistant aluminum alloy has an internal cavity for accommodating and mounting a signal processing circuit board, and a standard bracket interface is provided below the central base (1). Multiple support arms (2) made of high-strength engineering plastic extend radially uniformly along the circumference of the central base (1). The main body of each support arm (2) is a dominant flow ridge with a teardrop-shaped airfoil cross-section, and a hollow wiring channel is opened along the length of the support arm (2). The ends of the multiple support arms (2) furthest from the central base (1) are connected to a common reflective surface, and the support arms (2) closer to the central base (1) have a... The end is provided with a transducer mounting assembly, including a connecting flange (3) connected to the end of the support arm (2) by bolts, a damping ring (4) bonded to the connecting flange (3), a transducer mounting base (5) connected to the damping ring (4) by bolts and with a thin leaf spring (6) embedded inside, and a spindle-shaped flow guide shield (7) installed on the transducer mounting base (5). The ultrasonic transducer (8) is sealed and installed inside the flow guide shield (7). The middle sidewalls of multiple support arms (2) are connected together by short support rods (10) to a concentric ring-shaped turbulence stabilizer (9), and the ring cross-section of the turbulence stabilizer (9) is streamlined.

2. The wind speed and direction monitoring instrument based on the ultrasonic measurement principle according to claim 1, characterized in that, The support arm (2) has auxiliary reinforcing ribs symmetrically distributed on both sides of the main flow ridge, and the auxiliary reinforcing ribs are integrally formed with the main flow ridge.

3. The wind speed and direction monitoring instrument based on the ultrasonic measurement principle according to claim 1, characterized in that, The front end of the flow guide shield (7) has a circular sound window, and the sound window is provided with a mesh grid composed of fine radial and annular ribs.

4. The wind speed and direction monitoring instrument based on the ultrasonic measurement principle according to claim 1, characterized in that, The turbulence stabilizer (9) is made of aluminum-magnesium alloy and its diameter is smaller than the circumference formed by the midpoint of the three support arms (2).

5. The wind speed and direction monitoring instrument based on the ultrasonic measurement principle according to claim 1, characterized in that, The support arm (2) is integrally injection molded by mold.

6. The wind speed and direction monitoring instrument based on the ultrasonic measurement principle according to claim 1, characterized in that, The flow guide shield (7) is made of ABS engineering plastic.

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