Tornado occurrence characteristics detection device based on infrasound

Abstract

The invention discloses a tornado occurrence feature detection device based on infrasound, comprising a cylinder, wherein the upper and lower ends of the cylinder are detachably connected with an upper cover and a bottom plate, respectively, a central through hole and a plurality of noise reduction holes are opened on the upper cover and the bottom plate, the plurality of noise reduction holes are arranged on the outside of the central through hole, the noise reduction holes on the upper cover and the bottom plate are arranged one by one up and down, and a rubber hose is connected between the upper and lower noise reduction holes, a gauze is arranged on the central through hole on the upper cover, a drying chamber is connected to the central through hole on the bottom plate, a constant temperature control component is arranged inside the cylinder, an infrasound sensor is fixedly connected to the bottom plate, and the infrasound sensor is electrically connected to a data collector, the invention is conducive to detecting the features of tornado precursors and providing scientific data for accurate early warning of tornado disasters.

Description

Technical Field

[0001] The invention relates to the technical field of meteorological detection, and in particular to a tornado occurrence feature detection device based on infrasound waves. Background Art

[0002] When studying the mechanism of tornado formation and disappearance, researchers found that the storm system that produces tornadoes will emit low-frequency sounds 1-3 hours before they occur. The frequency is usually in the "infrasound" range of 0.5 to 20 Hz, which is inaudible to human ears. Because infrasound waves are not easy to attenuate, they can be transmitted hundreds of kilometers away and can be detected by instruments.

[0003] Modern meteorological science research shows that as rising air currents enter stable air pockets, upward air currents produce a chain reaction in the air pockets, causing changes in the clouds in the atmosphere, changing the dynamic structure of the clouds, and causing low-frequency oscillating ripples in the clouds, thus forming cloud gravity waves. For example, when there is a thunderstorm, hail, or a tornado is about to occur, the rising air currents change in the vortex in the air, causing the fluid structure of the clouds to change accordingly. When this change continues to change and accumulate on the vertical gradient, it will eventually produce cloud gravity waves. This cloud gravity wave changes alternately at a very low frequency, basically close to the frequency range of infrasound, thus causing infrasound in the atmosphere. People can measure this infrasound wave through some special device, analyze and extract its characteristics, and then analyze and predict that a tornado may be about to occur.

[0004] Infrasound waves are correlated with flow field characteristics. Since vibrations close to the frequency of infrasound waves can be transmitted over long distances, when a tornado weather process is about to occur, we can detect this change at a long distance. At the same time, we can use multi-point measurement and positioning methods to determine the approximate direction of the tornado to a certain extent. Combined with meteorological radar and other equipment, we can more accurately determine the location and distance of the tornado, providing technical support for early warning of tornadoes. Summary of the invention

[0005] The purpose of the present invention is to provide a tornado occurrence characteristic detection device based on infrasound to solve the problems existing in the above-mentioned prior art.

[0006] To achieve the above-mentioned purpose, the present invention provides the following scheme: The present invention provides a tornado occurrence characteristic detection device based on infrasound, including a cylinder, wherein the upper and lower ends of the cylinder are detachably connected with an upper cover and a bottom plate, respectively, and a central through hole and a plurality of noise reduction holes are respectively opened on the upper cover and the bottom plate, and the plurality of noise reduction holes are arranged on the outside of the central through hole, and the noise reduction holes on the upper cover and the bottom plate are arranged one by one in the upper and lower directions, and a rubber hose is connected between the upper and lower noise reduction holes, a gauze is arranged on the central through hole on the upper cover, and a drying chamber is connected to the central through hole on the bottom plate, and a constant temperature control component is arranged inside the cylinder; an infrasound sensor is fixedly connected to the bottom plate, and the infrasound sensor is electrically connected to a data collector.

[0007] Preferably, the cylinder, upper cover and bottom plate are all made of aluminum alloy.

[0008] Preferably, the cylinder is a cylindrical structure, the diameter of the cylinder is 250 mm, and the height of the cylinder is 300 mm.

[0009] Preferably, the number of the noise reduction holes is 8, the noise reduction holes are distributed on the outer circumference of the central through hole, and the distance between any two adjacent noise reduction holes is the same.

[0010] Preferably, the diameter of the central through hole is 30 mm, and the diameter of the noise reduction hole is 8 mm.

[0011] Preferably, a sensor support frame is fixedly arranged on the bottom plate, the infrasonic wave sensor is detachably connected to the sensor support frame, and the infrasonic wave sensor is arranged above the drying chamber.

[0012] Preferably, the vertical height between the infrasonic wave sensor and the bottom plate is 100 mm.

[0013] Preferably, a hollow bolt is connected to the central through hole on the bottom plate, the bottom plate and the drying chamber are threadedly connected via the hollow bolt, the upper end of the drying chamber is an open structure, and a desiccant is arranged inside the drying chamber.

[0014] Preferably, the constant temperature control component includes a thermometer, a semiconductor cooling sheet and an electric heating wire arranged inside the cylinder.

[0015] Preferably, the cylinder is a double-layer structure, and a heat-insulating material is arranged between the cylinders on both sides.

[0016] The present invention discloses the following technical effects: the present invention forms a porous structure through multiple groups of noise reduction holes on the upper cover and the bottom plate, and according to the characteristics that the infrasound waves emitted by a tornado are continuous while the noise of wind is discontinuous, the porous diffusion noise reduction principle of a large container device is used to filter the noise of the wind, and infrasound data is collected through an infrasound sensor and a data collector, and the performance of the infrasound sensor and the data collector is guaranteed to be stable and reliable by ensuring the constant temperature and dryness inside the cylinder. The present invention is conducive to detecting the characteristics of precursors of tornadoes and providing scientific data for accurately warning of tornado disasters. The device of the present invention is simple and practical, and can be installed in a meteorological louvered box to obtain infrasound data while obtaining other meteorological data. It is easy to install and maintain, has low cost, and is safe, environmentally friendly and reliable to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a top view of the detection device of the present invention;

[0019] Figure 2 for Figure 1 Middle AA section view;

[0020] Figure 3 It is a schematic diagram of the cylinder structure;

[0021] Among them, 1 is a cylinder, 2 is an upper cover, 3 is a bottom plate, 4 is a central through hole, 5 is a noise reduction hole, 6 is a rubber hose, 7 is a gauze, 8 is a drying chamber, 9 is an infrasonic sensor, 10 is a data collector, 11 is a sensor support frame, and 12 is a constant temperature control component. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Reference Figure 1-3The present invention provides a tornado occurrence characteristic detection device based on infrasound, including a cylinder 1, which is a cylindrical structure, with a diameter of 250 mm and a height of 300 mm. The upper and lower ends of the cylinder 1 are detachably connected with an upper cover 2 and a bottom plate 3, respectively. The cylinder 1, the upper cover 2 and the bottom plate 3 are all made of aluminum alloy, which ensures that the overall device is not too heavy and has strong rigidity. The upper cover 2 and the bottom plate 3 are detachably connected to the cylinder 1 by screws, and the bottom plate 3 is provided with supporting feet to support the entire device. A central through hole 4 and a plurality of noise reduction holes 5 are provided on the upper cover 2 and the bottom plate 3. The plurality of noise reduction holes 5 are circumferentially arranged on the outside of the central through hole 4, and the distance between any two adjacent noise reduction holes 5 is the same. The noise reduction holes 5 on the upper cover 2 and the bottom plate 3 are arranged one by one in the upper and lower parts, and the upper and lower noise reduction holes 5 are fixed with hollow bolts. A rubber hose 6 is connected between the upper and lower noise reduction holes 5. There are 8 noise reduction holes 5, and the diameter of the central through hole 4 is 30 mm, and the diameter of the noise reduction holes 5 is 8 mm. A porous structure is formed by multiple groups of noise reduction holes 5 on the upper cover 2 and the bottom plate 3. According to the characteristics that the infrasound waves emitted by a tornado are continuous, while the noise of wind is discontinuous, the porous diffusion noise reduction principle of a large container device is used to filter the noise of the wind.

[0025] A gauze 7 is provided on the central through hole 4 on the upper cover 2 to prevent dust from entering the interior of the cylinder 1 and contaminating the internal components. The central through hole 4 on the bottom plate 3 is connected to a drying chamber 8, and the central through hole 4 on the bottom plate 3 is connected to a hollow bolt. The bottom plate 3 and the drying chamber 8 are threadedly connected by the hollow bolt. The upper end of the drying chamber 8 is an open structure, and a desiccant is provided inside the drying chamber 8. The desiccant in the drying chamber ensures that the inside of the cylinder 1 is dry. A constant temperature control component is provided inside the cylinder 1; an infrasonic sensor 9 is fixedly connected to the bottom plate 3, and a sensor support frame 11 is fixedly provided on the bottom plate 3. The infrasonic sensor 9 is detachably connected to the sensor support frame 11. The infrasonic sensor 9 is arranged above the drying chamber 8, and the vertical height between the infrasonic sensor 9 and the bottom plate 3 is 100 mm. The infrasonic sensor 9 is electrically connected to a data collector 10. The central through hole 4 of the upper cover 2 is a sound introduction hole. After the infrasound enters the cylinder 1, it is collected by the infrasound sensor 9 and transmitted to the data collector 10. The data is transmitted to the data processor or data analyzer to further process the signal and extract reliable tornado infrasound.

[0026] The cylinder 1 is a double-layer structure, and a heat-insulating material is arranged between the two sides of the cylinder 1 to reduce the energy exchange between the inside and outside of the cylinder 1. The constant temperature control component includes a thermometer, a semiconductor cooling sheet and an electric heating wire arranged inside the cylinder 1. The temperature inside the cylinder 1 is detected by the thermometer. When the temperature is below 25 degrees Celsius, it is heated by the electric heating wire. When the temperature is above 25 degrees Celsius, it is cooled by the semiconductor cooling sheet to ensure that the temperature inside the cylinder 1 is constant at 25 degrees Celsius, so that the infrasonic wave sensor and the data collector maintain a constant temperature, and their performance is stable and reliable.

[0027] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to 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.

[0028] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A tornado occurrence feature detection device based on infrasound, characterized by: The invention comprises a cylinder (1), wherein the upper and lower ends of the cylinder (1) are detachably connected to an upper cover (2) and a bottom plate (3), respectively; the upper cover (2) and the bottom plate (3) are each provided with a central through hole (4) and a plurality of noise reduction holes (5); the plurality of noise reduction holes (5) are arranged outside the central through hole (4); the noise reduction holes (5) on the upper cover (2) and the bottom plate (3) are arranged one by one in an upper and lower correspondence manner, and a rubber hose (6) is connected between the upper and lower noise reduction holes (5); a gauze (7) is provided on the central through hole (4) on the upper cover (2); the central through hole (4) on the bottom plate (3) is connected to a drying chamber (8); a constant temperature control component (1) is provided inside the cylinder (1); 2); an infrasonic wave sensor (9) is fixedly connected to the bottom plate (3), and the infrasonic wave sensor (9) is electrically connected to a data acquisition device (10); the cylinder (1) is a cylindrical structure, the diameter of the cylinder (1) is 250 mm, and the height of the cylinder (1) is 300 mm; the number of the noise reduction holes (5) is 8, and the noise reduction holes (5) are distributed on the outer circumference of the central through hole (4), and the distance between any two adjacent noise reduction holes (5) is the same; the diameter of the central through hole (4) is 30 mm, and the diameter of the noise reduction hole (5) is 8 mm; the vertical height between the infrasonic wave sensor (9) and the bottom plate (3) is 100 mm.

2. The tornado occurrence characteristic detection device based on infrasound according to claim 1 is characterized in that: The material of the cylinder (1), the upper cover (2) and the bottom plate (3) are all aluminum alloy.

3. The tornado occurrence characteristic detection device based on infrasound according to claim 1, characterized in that: A sensor support frame (11) is fixedly arranged on the bottom plate (3), the infrasonic wave sensor (9) is detachably connected to the sensor support frame (11), and the infrasonic wave sensor (9) is arranged above the drying chamber (8).

4. The tornado occurrence feature detection device based on infrasound according to claim 1, characterized in that: The central through hole (4) on the bottom plate (3) is connected with a hollow bolt, the bottom plate (3) is threadedly connected to the drying chamber (8) via the hollow bolt, the upper end of the drying chamber (8) is an open structure, and a desiccant is arranged inside the drying chamber (8).

5. The tornado occurrence feature detection device based on infrasound according to claim 1, characterized in that: The constant temperature control component (12) comprises a thermometer, a semiconductor cooling sheet and an electric heating wire which are arranged inside the cylinder (1).

6. The tornado occurrence characteristic detection device based on infrasound according to claim 1, characterized in that: The cylinder (1) is a double-layer structure, and heat-insulating material is arranged between the cylinders (1) on both sides.

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