Three-dimensional ultrasonic anemograph virtual temperature calibration method

Abstract

The invention relates to a virtual temperature calibration method for a three-dimensional ultrasonic anemograph, and relates to the technical field of meteorological measurement, and the method comprises the steps: 1, starting an anemograph body, fixing the anemograph body in the middle of a three-dimensional heating and humidifying frame, and fixing the three-dimensional heating and humidifying frame in the middle of a three-dimensional blowing device; 2, the humidity of the periphery of the anemograph body is constant to be 30%, meanwhile, a three-dimensional blowing device is started, the three-dimensional blowing device is completely operated once every time the temperature rises by 1 DEG C, and meanwhile measurement data of the anemograph body are recorded; step 3, keeping the temperature constant and changing the humidity around the anemograph body, completely operating the three-dimensional blowing device once every five humidity percentage points, and recording measurement data of the anemograph body; 4, completing the whole measurement in the step 3 while increasing the temperature by 1 DEG C, and recording the measurement data of the anemograph body; and 4, comparing three groups of data in the step 2, the step 3 and the step 4 to obtain more accurate virtual temperature calibration. The method has the beneficial effect of obtaining more accurate virtual temperature calibration.

Description

Technical Field

[0001] The present invention relates to the technical field of meteorological measurement, and particularly relates to a method for calibrating virtual temperature of a three-dimensional ultrasonic anemometer. Background Art

[0002] In order to alleviate the energy pressure and step up the development and utilization of new energy, a large number of investigations need to be carried out in advance on the enrichment degree and distribution of wind energy resources before building a wind energy collection station at sea. Therefore, in the initial stage of developing offshore wind energy, the assessment of offshore wind energy is particularly important. And the reliable collection of wind energy conditions in relevant sea areas has become an important basis for the feasibility analysis of wind energy development.

[0003] The working principle of an ultrasonic anemometer is to measure wind speed and wind direction by using the ultrasonic time difference method. Since the propagation speed of sound in air will be superimposed with the air flow speed in the wind direction. If the propagation direction of ultrasonic waves is the same as the wind direction, its speed will increase; conversely, if the propagation direction of ultrasonic waves is opposite to the wind direction, its speed will decrease. Therefore, under fixed detection conditions, the propagation speed of ultrasonic waves in air can correspond to the wind speed function, and accurate wind speed and wind direction can be obtained through calculation.

[0004] In a three-dimensional ultrasonic anemometer, the calibration of ultrasonic virtual temperature is necessary because the measured value of virtual temperature may be affected by environmental conditions (such as temperature, humidity, etc.). By calibrating with a constant temperature field, these effects can be eliminated and the accuracy of heat flux measurement can be improved. For the calibration of a three-dimensional ultrasonic anemometer, it is generally completed in a wind tunnel. This calibration experiment mainly calibrates the requirements for measuring wind speed and wind direction without fixation and with high frequency (≥10Hz) of a three-dimensional ultrasonic anemometer through a controllable uniform and stable air flow field, but there is no specific calibration method for the simultaneously measured ultrasonic virtual temperature. Summary of the Invention

[0005] (1) Technical Problems to be Solved

[0006] In view of the above-mentioned disadvantages and deficiencies of the prior art, the present invention provides a method for calibrating virtual temperature of a three-dimensional ultrasonic anemometer, which solves the technical problem that there is no calibration method for ultrasonic virtual temperature when calibrating the standard of a three-dimensional ultrasonic anemometer.

[0007] (2) Technical Solutions

[0008] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0009] An embodiment of the present invention provides a method for calibrating the virtual temperature of a three-dimensional ultrasonic anemometer, including: Step 1, start the anemometer body and vertically fix it in the middle of a three-dimensional heating and humidifying frame, and then fix the three-dimensional heating and humidifying frame in the middle of a three-dimensional blowing device. The measurement frequency of the anemometer body is ≥10 Hz; Step 2, heat the space around the anemometer body through the three-dimensional heating and humidifying frame, with the temperature rising from 20 degrees Celsius to 50 degrees Celsius. Spray steam around the anemometer body through the three-dimensional heating and humidifying frame to keep the humidity around the anemometer body constant at 30%. At the same time, start the three-dimensional blowing device, and run the three-dimensional blowing device completely once for every 1-degree Celsius increase in temperature. At the same time, record the measurement data of the anemometer body, which is the basic calibration data; Step 3, change the only variable, that is, keep the space around the anemometer body at a constant temperature through the three-dimensional heating and humidifying frame, spray steam around the anemometer body through the three-dimensional heating and humidifying frame, change the humidity around the anemometer body, take every 5 humidity percentage points as a fixed point and run the three-dimensional blowing device completely once. At the same time, record the measurement data of the anemometer body; Step 4, complete a whole measurement of Step 3 while increasing the temperature by 1 degree Celsius, and record the measurement data of the anemometer body at the same time; Step 4, obtain a more accurate virtual temperature calibration by comparing the three groups of data in Steps 2, 3, and 4.

[0010] A method for calibrating the virtual temperature of a three-dimensional ultrasonic anemometer proposed by an embodiment of the present invention controls variable measurements for the virtual temperature calibration of the three-dimensional ultrasonic anemometer. Set the measurement frequency of the anemometer body to 10 Hz, and at the same time set the standard humidity to 30%. Start the three-dimensional blowing device, and then raise the temperature from 20 degrees Celsius to 50 degrees Celsius. Run the three-dimensional blowing device completely once for every 1-degree Celsius increase in temperature. At the same time, record the measurement data of the anemometer body, which is the basic calibration data. Keep the space around the anemometer body at a constant temperature through the three-dimensional heating and humidifying frame, spray steam around the anemometer body through the three-dimensional heating and humidifying frame, change the humidity around the anemometer body, take every 5 humidity percentage points as a fixed point and run the three-dimensional blowing device completely once. At the same time, record the measurement data of the anemometer body. Complete a whole measurement of Step 3 while increasing the temperature by 1 degree Celsius, and record the measurement data of the anemometer body at the same time. Obtain a more accurate virtual temperature calibration by comparing the three groups of data.

[0011] Optionally, the three-dimensional heating and humidifying frame includes a metal frame enclosing a cube, heating strips arranged at one end near the center on the edges of the metal frame, and spray nozzles arranged at the corners of the metal frame and pointing to the center.

[0012] By setting the three-dimensional heating and humidifying framework as a cubic metal framework, while arranging heating strips on the edges of the metal framework and spray nozzles at the corners of the metal framework, the influence on subsequent blowing is reduced while the temperature and humidity are controlled more three-dimensionally and comprehensively, which is more convenient.

[0013] Optionally, water delivery holes are formed in the edges of the metal framework along the length direction, and adjacent water delivery holes are communicated with each other. The water delivery holes surrounding the cubic framework supply water to the spray nozzles, and adjacent heating strips are connected to each other.

[0014] By forming water delivery holes in the edges of the metal framework and making adjacent water delivery holes communicate with each other, a cubic waterway is formed inside the metal framework, which is more convenient for supplying water to the spray nozzles, reduces external waterways, and at the same time connects adjacent heating strips and controls them jointly, which can also reduce the setting of external electronic components, thereby reducing the influence on subsequent blowing and improving the accuracy of virtual temperature calibration.

[0015] Optionally, metal wires extend from the middle of each of the four edges on the upper and lower sides of the metal framework towards the center. The four metal wires on the upper side and the four metal wires on the lower side are each a group, and the ends of the metal wires in the same group are jointly connected with a connecting piece. The two connecting pieces are parallel to each other, one above the other, and both ends of the anemometer body are detachably connected to the two connecting pieces respectively.

[0016] By arranging two groups of metal wires on the metal framework and respectively fixing connecting pieces at the ends of the two groups of metal wires, the anemometer can be directly and vertically fixed between the two connecting pieces, thereby reducing the occlusion generated when the wind blows to the anemometer body and further improving the accuracy of virtual temperature calibration.

[0017] Optionally, a plurality of positioning bolts are vertically arranged on the upper end surface of the anemometer body. Positioning holes for the positioning bolts to pass through are formed in the connecting piece located above the anemometer body. A positioning nut abutted against the upper end surface of the connecting piece is threadedly connected to the positioning bolt, and the lower end surface of the anemometer body is magnetically attracted to the lower connecting piece.

[0018] By vertically arranging positioning bolts on the upper end surface of the anemometer body, when fixing the anemometer body, after passing the positioning bolts through the positioning holes, they are fixed by the positioning nuts, so that the anemometer body is in a suspended state. Then, the lower connecting piece is pulled up until it is magnetically attracted to the lower end surface of the anemometer body, and by continuing to turn the positioning nuts, the metal wires connected to the lower connecting piece are tightened, thereby completing the fixation of the anemometer body. This solution makes the anemometer body not shake due to the wind, and at the same time the installation process is simple and convenient.

[0019] Optionally, the three-dimensional blowing device includes two circles of slide rails and a blowing head that slides along the inner circle of the slide rails. The two circles of slide rails are perpendicular to each other and intersect. The intersection points of the two circles of slide rails are located at the topmost and bottommost positions. While the blowing head moves, it blows air towards the center of the two circles of slide rails.

[0020] By setting the two circles of slide rails to be perpendicular and intersecting, a blowing head is slidably connected to each of the two circles of slide rails. That is, blowing air towards the anemometer body from any position on the slide rails by the two blowing heads can be combined to blow air towards the anemometer body in any direction in space, thereby making the blowing direction more comprehensive, and further obtaining more detailed and specific data to improve the accuracy of virtual temperature calibration.

[0021] Optionally, a base is horizontally arranged at the lower end of the intersection point of the lower ends of the two circles of slide rails. On the upper end surface of the base, a support leg is arranged on each side of the intersection point of the lower ends of the two circles of slide rails. The tops of the two support legs are horizontally connected with a square support frame. The three-dimensional heating and humidifying frame is placed on the upper end of the square support frame and is located at the center of the two circles of slide rails.

[0022] By horizontally arranging the base at the intersection point of the lower ends of the two circles of slide rails, the base supports on the ground, so as to more stably complete the implementation of the entire method. At the same time, two support legs are arranged on the upper end surface of the base. The tops of the two support legs are a horizontally arranged square support frame. When in use, the three-dimensional heating and humidifying frame can be directly placed on the upper end of the square support frame. This solution makes the installation of the three-dimensional heating and humidifying frame more convenient, and at the same time can effectively reduce the occlusion generated when the wind blows to the anemometer body, further improving the accuracy of virtual temperature calibration.

[0023] Optionally, the two support legs are hollow inside and a water pipe and an electric wire are respectively inserted into them. The water pipe and the electric wire respectively extend to the upper side end of the square support frame and supply water and power to the three-dimensional heating and humidifying frame.

[0024] By inserting the water pipe and the electric wire into the two support legs, the water pipe and the electric wire are directly connected to the upper end of the square support frame. When the three-dimensional heating and humidifying frame is placed on the upper end surface of the square support frame, the water pipe and the electric wire can be directly connected to the three-dimensional heating and humidifying frame to supply water and power, reducing the setting of external pipeline lines, thereby reducing the occlusion generated when the wind blows to the anemometer body, and further improving the accuracy of virtual temperature calibration.

[0025] Optionally, a chute with a "T" - shaped cross - section is coaxially opened in the circumferential direction of the inner circle of the two circles of slide rails. A sliding trolley is slidably connected to each of the two circles of chutes. One end of the sliding trolley is provided with a slider embedded in the chute. Inner gears are coaxially arranged on both sides of the opening of the chute on the slide rail. A traveling gear meshing with the inner gear is rotatably arranged on the sliding trolley. The blowing head is fixed to both side ends of the sliding trolley.

[0026] By providing a chute on the inner ring of the slide rail, the slider on the sliding trolley is embedded in the chute for sliding, and at the same time, the traveling gear on the sliding trolley meshes with the internal gear on the inner ring of the slide rail, thereby completing the traveling of the sliding trolley and further driving the blowing head to slide along the slide rail. This solution makes the moving speed and position of the blowing head more controllable, making it more convenient to set to obtain data.

[0027] Optionally, a plurality of temperature and humidity detectors are arranged on the anemometer body, the three-dimensional heating and humidifying frame, and the three-dimensional blowing device.

[0028] By using a plurality of temperature and humidity detectors to detect the temperature and humidity at multiple points in the entire space, more specific environmental information can be obtained. Then, by analyzing the measured data, a more accurate virtual temperature calibration can be obtained.

[0029] (III) Advantageous Effects

[0030] The advantageous effects of the present invention are as follows: For the virtual temperature calibration method of the three-dimensional ultrasonic anemometer of the present invention, control variable measurement is performed on the virtual temperature calibration of the three-dimensional ultrasonic anemometer by this method. The measurement frequency of the anemometer body is set to 10 Hz, and the standard humidity is set to 30%. The three-dimensional blowing device is started, and then the temperature is increased from 20 °C to 50 °C. Each time the temperature is increased by 1 °C, the three-dimensional blowing device runs completely once, and at the same time, the measurement data of the anemometer body is recorded. This data is the basic calibration data. The space around the anemometer body is kept at a constant temperature by the three-dimensional heating and humidifying frame, and steam is ejected around the anemometer body by the three-dimensional heating and humidifying frame to change the humidity around the anemometer body. Every 5 humidity percentage points is a fixed point, and the three-dimensional blowing device runs completely once, and at the same time, the measurement data of the anemometer body is recorded. Each time the temperature is increased by 1 °C, a complete measurement in step three is completed, and at the same time, the measurement data of the anemometer body is recorded. By comparing the three groups of data, a more accurate virtual temperature calibration is obtained. Description of the Drawings

[0031] Figure 1 Is a three-dimensional schematic diagram of an embodiment of the present invention;

[0032] Figure 2 Is a cross-sectional view of an embodiment of the present invention;

[0033] Figure 3 Is a structural schematic diagram of the anemometer body and the three-dimensional heating and humidifying frame in an embodiment of the present invention;

[0034] Figure 4 Is a structural schematic diagram of the three-dimensional blowing device in an embodiment of the present invention;

[0035] Figure 5 Is a structural schematic diagram of the sliding trolley in an embodiment of the present invention.

[0036]

Explanation of the Attached Drawing Reference Signs

[0037] 1. Anemometer body; 11. Positioning bolt; 12. Positioning nut; 2. Three-dimensional blowing device; 21. Slide rail; 211. Chute; 212. Internal gear; 22. Blowing head; 23. Base; 24. Support leg; 25. Square support frame; 26. Sliding trolley; 261. Slide block; 262. Traveling gear; 3. Three-dimensional heating and humidifying frame; 31. Metal frame; 311. Water delivery hole; 312. Metal wire; 32. Heating strip; 33. Spray nozzle; 34. Connecting piece; 341. Positioning hole; 4. Temperature and humidity detector. Specific Embodiment

[0038] In order to better explain the present invention for easy understanding, the present invention will be described in detail below in conjunction with the attached drawings through specific embodiments.

[0039] The virtual temperature calibration method for a three-dimensional ultrasonic anemometer proposed in the embodiment of the present invention controls variable measurement for the virtual temperature calibration of the three-dimensional ultrasonic anemometer. Set the measurement frequency of the anemometer body to 10 Hz, and at the same time set the standard humidity to 30%. Start the three-dimensional blowing device, and then raise the temperature from 20 °C to 50 °C. Each time the temperature is increased by 1 °C, the three-dimensional blowing device runs completely once, and at the same time record the measurement data of the anemometer body. This data is the basic calibration data. Keep the space around the anemometer body at a constant temperature through the three-dimensional heating and humidifying frame, and spray steam around the anemometer body through the three-dimensional heating and humidifying frame to change the humidity around the anemometer body. Every 5 humidity percentage points is a fixed point, and the three-dimensional blowing device runs completely once, and at the same time record the measurement data of the anemometer body. Each time the temperature is increased by 1 °C, a complete measurement in step three is completed, and at the same time record the measurement data of the anemometer body. By comparing the three groups of data, a more accurate virtual temperature calibration is obtained.

[0040] To better understand the above technical solution, the exemplary embodiments of the present invention will be described in more detail below with reference to the attached drawings. Although the exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to be able to fully convey the scope of the present invention to those skilled in the art.

[0041] Refer to Figure 1, A method for calibrating virtual temperature of a three-dimensional ultrasonic anemometer, including: Step 1, start the anemometer body 1 and vertically fix it in the middle of the three-dimensional heating and humidifying frame 3, and then fix the three-dimensional heating and humidifying frame 3 in the middle of the three-dimensional blowing device 2. The measurement frequency of the anemometer body 1 is ≥10Hz; Step 2, heat the space around the anemometer body 1 through the three-dimensional heating and humidifying frame 3, with the temperature rising from 20 degrees Celsius to 50 degrees Celsius. Spray steam around the anemometer body 1 through the three-dimensional heating and humidifying frame 3, keeping the humidity around the anemometer body 1 constant at 30%. At the same time, start the three-dimensional blowing device 2. Every time the temperature rises by 1 degree Celsius, run the three-dimensional blowing device 2 completely once, and record the measurement data of the anemometer body 1 simultaneously. This data is the basic calibration data; Step 3, change the only variable, that is, keep the space around the anemometer body 1 at a constant temperature through the three-dimensional heating and humidifying frame 3, spray steam around the anemometer body 1 through the three-dimensional heating and humidifying frame 3, change the humidity around the anemometer body 1. Every 5 humidity percentage points is a fixed point, and run the three-dimensional blowing device 2 completely once, and record the measurement data of the anemometer body 1 simultaneously; Step 4, complete one full measurement of Step 3 while the temperature rises by 1 degree Celsius, and record the measurement data of the anemometer body 1 simultaneously; Step 4, by comparing the three groups of data in Steps 2, 3, and 4, obtain a more accurate virtual temperature calibration.

[0042] See Figure 4 and Figure 5 , The three-dimensional blowing device 2 includes two circles of slide rails 21 and a blowing head 22 that slides along the inner circle of the slide rails 21. The two circles of slide rails 21 are perpendicular to each other and intersect. The intersection points of the two circles of slide rails 21 are located at the top and bottom. While the blowing head 22 moves, it blows air towards the center of the two circles of slide rails 21. Blowing air towards the anemometer body 1 from any position of the two blowing heads 22 on the slide rails 21 can be combined to blow air towards the anemometer body 1 in any direction in space, so that the blowing direction is more comprehensive, and then more detailed and specific data can be obtained to improve the accuracy of virtual temperature calibration.

[0043] The lower end of the intersection point of the lower ends of the two circles of slide rails 21 is horizontally welded with a base 23. On the upper end surface of the base 23, on both sides of the intersection point of the lower ends of the two circles of slide rails 21, there is a support leg 24 through bolts. The tops of the two support legs 24 are horizontally welded with a square support frame 25. The three-dimensional heating and humidifying frame 3 is placed on the upper end of the square support frame 25 and is located at the center of the two circles of slide rails 21.

[0044] The two support legs 24 are hollow inside and are respectively inserted with a water pipe and an electric wire. The water pipe and the electric wire respectively extend to the upper side end of the square support frame 25 and supply water and power to the three-dimensional heating and humidifying frame 3. When the three-dimensional heating and humidifying frame 3 is placed on the upper end surface of the square support frame 25, the water pipe and the electric wire can be directly connected to the three-dimensional heating and humidifying frame 3, so as to supply water and power, reducing the setting of external line pipes, thereby reducing the blockage generated when the wind blows to the anemometer body 1, and further improving the accuracy of virtual temperature calibration.

[0045] The inner circumferences of the two circles of slide rails 21 are coaxially provided with chutes 211 with a "T" - shaped cross - section. Each of the two circles of chutes 211 is slidably connected with a sliding trolley 26. One end of the sliding trolley 26 is provided with a slider 261 embedded in the chute 211. The slide rail 21 is coaxially welded with internal gears 212 on both sides of the opening of the chute 211. A traveling gear 262 meshing with the internal gear 212 is rotatably connected to the sliding trolley 26 through a motor drive. The blowing head 22 is fixed to both side ends of the sliding trolley 26 by bolts. The sliding trolley 26 is internally provided with a built - in power supply for driving the motor to rotate and for the blowing head 22 to blow. This makes the moving speed and position of the blowing head 22 more controllable, thus making it more convenient to set up to obtain data.

[0046] See Figure 2 and Figure 3 , the three - dimensional heating and humidifying frame 3 includes a metal frame 31 enclosing a cube, heating strips 32 arranged on the edges of the metal frame 31 near the center side end, and spray nozzles 33 arranged at the corners of the metal frame 31 and pointing to the center. Water - conveying holes 311 are opened along the length direction of the edges of the metal frame 31, and adjacent water - conveying holes 311 are interconnected. The water - conveying holes 311 enclosing the cube - shaped frame supply water to the spray nozzles 33, and adjacent heating strips 32 are interconnected. Thus, a cube - shaped water path is formed inside the metal frame 31, which is more convenient for supplying water to the spray nozzles 33, reducing the external water path. At the same time, connecting adjacent heating strips 32 together and controlling them jointly can also reduce the setting of external electronic components, thereby reducing the influence on the subsequent blowing and improving the accuracy of virtual temperature calibration.

[0047] On the middle parts of the four edges on the upper and lower sides of the metal frame 31, metal wires 312 extend towards the center. Four metal wires 312 on the upper side and four metal wires 312 on the lower side are each in a group. The ends of the metal wires 312 in the same group are jointly connected with a connecting piece 34. The two connecting pieces 34 are parallel to each other, one above the other. The two ends of the anemometer body 1 are respectively detachably connected to the two connecting pieces 34. On the upper end surface of the anemometer body 1, a plurality of positioning bolts 11 are vertically arranged. On the connecting piece 34 located on the upper side of the anemometer body 1, positioning holes 341 for the positioning bolts 11 to pass through are provided. A positioning nut 12 that abuts against the upper end surface of the connecting piece 34 is threadedly connected to the positioning bolt 11. The lower end surface of the anemometer body 1 is magnetically attracted to the lower connecting piece 34. After passing the positioning bolt 11 through the positioning hole 341 and fixing it with the positioning nut 12, the anemometer body 1 is in a suspended state. Then, the lower connecting piece 34 is pulled up until it is magnetically attracted to the lower end surface of the anemometer body 1, and then by continuously screwing the positioning nut 12, the metal wires 312 connected to the lower connecting piece 34 are tightened, thereby completing the fixation of the anemometer body 1, so that the anemometer body 1 will not shake due to the wind. The installation process is simple and convenient. At the same time, the metal wires 312 can reduce the blockage generated when the wind blows to the anemometer body 1, further improving the accuracy of virtual temperature calibration.

[0048] Temperature and humidity detectors 4 are fixed at multiple points on the metal frame 31, the anemometer body 1, and the two circles of slide rails 21. By detecting the temperature and humidity at multiple points in the entire space through the multiple temperature and humidity detectors 4, more specific environmental information can be obtained, and then combined with the measured data for analysis, thereby obtaining a more accurate virtual temperature calibration.

[0049] In the description of the present invention, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more, unless otherwise specifically defined.

[0050] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0051] In the present invention, unless otherwise clearly specified and defined, a first feature being "on" or "under" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intermediate medium. Further, a first feature being "above", "over" and "on top of" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the horizontal height of the first feature is higher than that of the second feature. A first feature being "under", "below" and "beneath" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the horizontal height of the first feature is lower than that of the second feature.

[0052] In the description of this specification, the descriptions of terms such as "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0053] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A virtual temperature calibration method for a three-dimensional ultrasonic anemometer, characterized in that: include, Step 1: Start the anemometer body (1) and fix it vertically in the middle of the three-dimensional heating and humidification frame (3), and then fix the three-dimensional heating and humidification frame (3) in the middle of the three-dimensional blowing device (2), and the measurement frequency of the anemometer body (1) is ≥10Hz; Step 2: Heat the surrounding space of the anemometer body (1) through the three-dimensional heating and humidification frame (3), and the temperature is raised from 20 degrees Celsius to 50 degrees Celsius. Steam is sprayed around the anemometer body (1) through the three-dimensional heating and humidification frame (3), and the humidity around the anemometer body (1) is kept constant at 30%. At the same time, start the three-dimensional blowing device (2), and run the three-dimensional blowing device (2) once every time the temperature is raised by 1 degree Celsius, and record the wind The anemometer body (1) measures data, which is the basic calibration data; step three, changing the only variable, that is, the surrounding space of the anemometer body (1) is kept at a constant temperature by the three-dimensional heating and humidifying frame (3), and steam is sprayed around the anemometer body (1) by the three-dimensional heating and humidifying frame (3), so as to change the humidity around the anemometer body (1), and the three-dimensional blowing device (2) is completely operated once every 5 humidity percentage points, and the anemometer body (1) measurement data is recorded at the same time; step four, a full measurement of step three is completed every time the temperature is increased by 1 degree Celsius, and the anemometer body (1) measurement data is recorded at the same time; step four, by comparing the three groups of data in steps two, three and four, a more accurate virtual temperature calibration is obtained.

2. The virtual temperature calibration method of a three-dimensional ultrasonic anemometer according to claim 1, characterized in that: The three-dimensional heating and humidifying frame (3) comprises a metal frame (31) formed into a cube, a heating strip (32) arranged on one side end of the edge of the metal frame (31) close to the center, and a spray nozzle (33) arranged at the corner of the metal frame (31) and pointing to the center.

3. The virtual temperature calibration method of a three-dimensional ultrasonic anemometer according to claim 2, characterized in that: The edges of the metal frame (31) are provided with water delivery holes (311) along the length direction, and adjacent water delivery holes (311) are interconnected. The water delivery holes (311) forming a cubic frame supply water to the spray nozzle (33), and adjacent heating strips (32) are connected to each other.

4. The virtual temperature calibration method of a three-dimensional ultrasonic anemometer according to claim 2, characterized in that: A metal wire (312) extends from the middle of four edges on both sides of the metal frame (31) to the center. The four metal wires (312) on the upper and lower sides form a group. The ends of the metal wires (312) in the same group are connected to a connecting piece (34). Two connecting pieces (34) are parallel to each other, one above and one below. The two ends of the anemometer body (1) are detachably connected to the two connecting pieces (34).

5. The virtual temperature calibration method of a three-dimensional ultrasonic anemometer as claimed in claim 4, characterized in that: A plurality of positioning bolts (11) are vertically arranged on the upper end surface of the anemometer body (1); a positioning hole (341) for the positioning bolts (11) to pass through is opened on the connecting plate (34) located on the upper side of the anemometer body (1); a positioning nut (12) abutting against the upper end surface of the connecting plate (34) is threadedly connected on the positioning bolt (11); and the lower end surface of the anemometer body (1) is magnetically attracted to the lower connecting plate (34).

6. The virtual temperature calibration method of a three-dimensional ultrasonic anemometer according to claim 1, characterized in that: The three-dimensional blowing device (2) comprises two circles of slide rails (21) and a blowing head (22) that slides along the inner circle of the slide rails (21), the two circles of the slide rails (21) are perpendicular to each other and intersect, the intersection points of the two circles of the slide rails (21) are located at the top and the bottom, and the blowing head (22) blows air toward the center of the two circles of the slide rails (21) while moving.

7. The virtual temperature calibration method of a three-dimensional ultrasonic anemometer according to claim 6, characterized in that: A base (23) is horizontally arranged at the lower end of the intersection of the lower ends of the two circles of the slide rails (21), and a support leg (24) is arranged on each side of the upper end surface of the base (23) at the intersection of the lower ends of the two circles of the slide rails (21). A square support frame (25) is horizontally connected to the top of the two support legs (24), and the three-dimensional heating and humidification frame (3) is placed on the upper end of the square support frame (25) and is located at the center of the two circles of the slide rails (21).

8. The virtual temperature calibration method of a three-dimensional ultrasonic anemometer according to claim 7, characterized in that: The two legs (24) are hollow inside and are respectively inserted with water pipes and electric wires. The water pipes and electric wires respectively extend to the upper side ends of the square support frame (25) and supply water and electricity to the three-dimensional heating and humidifying frame (3).

9. The virtual temperature calibration method of a three-dimensional ultrasonic anemometer according to claim 6, characterized in that: The inner circles of the two circles of the slide rails (21) are coaxially provided with a slide groove (211) with a "T"-shaped cross section. The two circles of the slide grooves (211) are each slidably connected to a slide trolley (26). One end of the slide trolley (26) is provided with a slider (261) embedded in the slide groove (211). The slide rail (21) is coaxially provided with an internal gear (212) on both sides of the opening of the slide groove (211). The slide trolley (26) is rotatably provided with a traveling gear (262) meshing with the internal gear (212), and the hair dryer head (22) is fixed to the two side ends of the slide trolley (26).

10. The virtual temperature calibration method of a three-dimensional ultrasonic anemometer according to claim 1, characterized in that: A plurality of temperature and humidity detectors (4) are arranged on the anemometer body (1), the three-dimensional heating and humidifying frame (3) and the three-dimensional blowing device (2).

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