Anemoscope / wind direction sensor verification and calibration device based on wind tunnel

Abstract

The utility model relates to an anemoscope / wind direction sensor verification and calibration device based on a wind tunnel, which belongs to the technical field of meteorological station anemoscope / wind direction sensor verification and calibration and comprises a wind direction angle control unit device, a data acquisition unit and a setting and data display unit. The wind direction angle control unit device comprises a bottom plate, a supporting platform, a servo motor, a servo motor transmission gear, a dial transmission gear, a dial, a fixing clamp, a cylindrical gear, an anemoscope fixed connection plug-in, a limiter and a structural shell, the data acquisition unit comprises a communication interface and a single chip microcomputer, and the setting and data display unit comprises a processor and a displayer. The device can realize automatic detection and manual detection, is simple in structure, low in manufacturing and maintenance cost, high in safety coefficient, good in stability, convenient to use in a wind tunnel experiment section, simple to operate, small in risk and wide in application prospect, and meets the technical requirements of automatic verification and calibration business of the wind indicator / wind direction sensor in China.

Description

Technical Field

[0001] This utility model belongs to the field of weather station wind vane / wind direction sensor verification and calibration technology, and in particular relates to a wind vane / wind direction sensor verification and calibration device based on a wind tunnel. Background Technology

[0002] Anemometers / wind direction sensors are devices used to detect and measure wind direction in real time, playing a vital role in social and economic development. For example, they provide high-resolution wind direction data in meteorological observations, supporting weather forecasting models and climate research, and providing crucial data support for early warnings of disasters such as typhoons and storms; they are used in wind tunnel experiments, aerodynamic research, and HVAC system optimization, improving equipment performance and energy efficiency through accurate wind direction measurement; and they help optimize the layout and orientation of wind turbine generators by accurately measuring wind direction, thereby improving wind energy utilization efficiency, and so on.

[0003] As can be seen from the above, the verification and calibration of wind vanes / wind direction sensors are of great significance. Verification and calibration can identify and correct errors, maintain data reliability, discover potential faults, maintain or replace components in a timely manner, reduce the risk of sudden failures, and ensure continuous and stable operation. It can also prevent the accumulation of small problems, slow down component wear and tear, thereby extending the overall lifespan of wind vanes / wind direction sensors. Furthermore, it can ensure that wind vanes / wind direction sensors comply with national and international standards and meet compliance requirements.

[0004] Currently, the standard instruments and supporting facilities used by meteorological metrology departments in my country for verifying and calibrating wind vanes / wind direction sensors are all manually adjustable devices. However, human operation factors can lead to significant errors in verification and calibration. At the same time, existing wind vane / wind direction sensor verification and calibration devices with automated functions suffer from complex structures and high manufacturing and maintenance costs. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a device with a simple structure, low manufacturing and maintenance costs, which can reduce the error of verifying and calibrating wind vanes / wind direction sensors and can automate the verification and calibration.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: a wind direction instrument / wind direction sensor calibration and verification device based on a wind tunnel, including a wind direction angle control unit, a data acquisition unit, and a setting and data display unit.

[0007] The wind direction angle control unit includes a base plate, a support platform, a servo motor, a servo motor transmission gear, a dial transmission gear, a dial, a fixing clamp, a cylindrical gear, a wind vane fixing connector, a limiter, and a structural housing.

[0008] Excluding the servo motor, servo motor drive gear, and fixing clamp, the wind direction angle control unit is a vertical structure. The bottom of the vertical structure is a base plate, and a support platform is fixedly connected to the center of the upper surface of the base plate. The support platform is fixed to the base plate by bearings and can rotate around the central axis. A dial drive gear is fixedly installed in the center of the upper surface of the support platform. The center of the dial drive gear is a circular hole. One end of the dial drive gear is engaged with the gear of the servo motor drive gear. The dial drive gear and the servo motor drive gear are composed of a set of helical gears. The other end of the servo motor drive gear is fixedly connected to the transmission part of the servo motor outside the vertical structure.

[0009] On the opposite side of the servo motor drive gear is a vertical cylindrical gear. The cylindrical gear is a cylinder with an upper gear and a lower gear. The lower gear of the cylindrical gear is embedded in the gear of the dial drive gear. The cylindrical gear is engaged with the gear of the dial drive structure at the lower center of the dial through the upper gear.

[0010] Preferably, for every one revolution of the dial, the servo motor drives the gears to rotate 30 times.

[0011] Preferably, the dial has a measurement range of 0° to 360° and a resolution of 1°.

[0012] Between the base plate and the dial is a structural shell that encloses the servo motor drive gear, the dial drive gear, the support platform, the cylindrical gear, and the dial drive structure at the lower center of the dial. The bottom of the structural shell is tightly fixed to the base plate, and there is a gap between the top of the structural shell and the dial. The top of the structural shell has a circular hole at its center. The lower end of the cylindrical gear is vertically fixed to the base plate via a bearing, and the upper end of the cylindrical gear is fixed to the upper end of the structural shell via a bearing.

[0013] Preferably, the gear ratio between the servo motor and the servo motor transmission gear is 1:1.

[0014] The dial is located directly above the dial drive gear and is fixedly mounted on the dial drive structure. The dial drive structure ensures that the dial rotates around its central axis. The wind vane fixing connector is fixedly connected to the upper surface of the dial. The wind vane fixing connector is a cylindrical structure with a base, which is fixedly connected to the edge area of ​​the central circular hole on the upper surface of the dial. The wind vane fixing connector is fixedly mounted on the support platform through multiple support columns passing through the dial, the dial drive structure at the lower center of the dial, and the central circular hole of the dial drive gear. The wind vane fixing connector is used to fix and connect the wind vane / wind direction sensor to be verified and calibrated. The limiter is fixedly mounted on the structural shell and is located directly above the servo motor drive gear. The limiter is connected to the servo motor through a signal line and limits the voltage, current, and power of the servo motor to prevent them from exceeding the set safety range, thereby protecting the servo motor and circuit from damage. A fixing clamp is fixedly mounted on the lower surface of the base plate. The fixing clamp is used to fix the wind direction angle control unit device to a specific device inside the wind tunnel.

[0015] The data acquisition unit includes a communication interface and a microcontroller. The communication interface is connected to the data output section of the wind vane / wind direction sensor to be tested and calibrated via a data transmission cable. The communication interface is also connected to the servo motor and the setting and display unit via data transmission cables. The microcontroller processes and converts the data transmitted from the wind vane / wind direction sensor to be tested and calibrated, and then transmits it to the setting and display unit.

[0016] The setting and data display unit includes a processor and a display. The processor processes the signals from the data acquisition unit and then transmits the data to the display. The display visualizes the data. The operator sets parameters through the processor, which then transmits the parameters to the microcontroller, which in turn controls the servo motor.

[0017] The working process of the wind vane / wind direction sensor calibration and verification device based on a wind tunnel according to this utility model is as follows:

[0018] (1) Automatic mode

[0019] S1: Fix the wind vane / wind direction sensor to be tested and calibrated to the wind vane fixing connector, and align the 0° line of the wind vane / wind direction sensor to be tested and calibrated with the 0° line of the scale of this utility model.

[0020] S2: Fix the wind direction angle control unit in the working section of the wind tunnel using a fixing clamp, so that the wind vane of the wind instrument / wind direction sensor to be tested and calibrated is located at the 0° line, and the 0° line is parallel to the wind tunnel axis;

[0021] S3: Power on the device and preheat for 15 minutes to stabilize the operating current of each module;

[0022] S4: Start-up wind speed verification of the wind vane / wind direction sensor to be verified / calibrated: The operator sets parameters through the processor and controls the servo motor to rotate the wind vane of the wind vane / wind direction sensor to be verified / calibrated by 15°, starts the wind tunnel, and slowly increases the wind speed inside the wind tunnel. When the wind vane of the wind vane / wind direction sensor to be verified / calibrated begins to move in the direction of the wind tunnel axis, the wind speed value at this time is read, which is the start-up wind speed of the wind vane / wind direction sensor to be verified / calibrated.

[0023] S5: Verification of wind direction angle indication of the wind vane / sensor to be verified / calibrated: Position the wind vane of the wind vane / sensor to be verified / calibrated at the 0° line, aligning the 0° line of the wind vane with the 0° line of the scale. The operator sets parameters via the processor, and the system automatically runs at 0°, 45°, 90°, 135°, 180°, 225°, 270°, and 315° as verification points. The wind vane rotates to the corresponding angle under the drive of the servo motor. The error value is calculated based on the actual wind direction angle value (standard value) and the wind direction angle indication value displayed by the wind vane / sensor to be verified / calibrated (the value being verified). This invention automatically reads and records the wind direction angle indication value of one verification point three times. After completing the verification at the current verification point, the processor controls the servo motor to automatically rotate the wind vane to the next verification point, completing the wind direction angle indication error verification for each verification point.

[0024] (2) Manual mode

[0025] S1: Fix the wind vane / wind direction sensor to be tested and calibrated to the wind vane fixing connector, and align the 0° line of the wind vane / wind direction sensor to be tested and calibrated with the 0° line of the scale of this utility model.

[0026] S2: Fix the wind direction angle control unit in the working section of the wind tunnel using a fixing clamp, so that the wind vane of the wind instrument / wind direction sensor to be tested and calibrated is located at the 0° line, and the 0° line is parallel to the wind tunnel axis;

[0027] S3: Power on the device and preheat for 15 minutes to stabilize the operating current of each module;

[0028] S4: According to the actual calibration needs, the operator manually controls the processor to make the servo motor control the wind vane of the wind vane / wind direction sensor to be verified and calibrated to rotate through a specific angle relative to the 0° line of the scale, and the wind vane to rotate counterclockwise and clockwise.

[0029] Through the above design scheme, this utility model can bring the following beneficial effects: the device has a simple structure, low manufacturing and maintenance costs, high safety factor and good stability, is easy to use in wind tunnel test section, is simple to operate and has low risk, has a wide application prospect, and meets the technical needs of domestic wind vane / wind direction sensor automatic verification and calibration business. Attached Figure Description

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0031] Figure 1 This is a front view schematic diagram of the wind direction angle control unit of the wind direction instrument / wind direction sensor calibration and verification device based on a wind tunnel according to this utility model.

[0032] Figure 2 This is a simplified schematic diagram of a wind vane / wind direction sensor calibration and verification device based on a wind tunnel, according to this utility model.

[0033] In the diagram, 1.1-servo motor, 1.2-servo motor transmission gear, 1.3-dimension transmission gear, 1.4-dimension, 1.5-fixing clamp, 1.6-cylindrical gear, 1.7-wind vane fixing connector, 1.8-limiter, 2.1-communication interface, 2.2-microcontroller, 3.1-processor, 3.2-display. Detailed Implementation

[0034] The technical solution of this utility model will be clearly and completely described below through specific examples. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0035] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0036] In this embodiment of the invention, all directional indicators (such as up, down, left, right, front, back, horizontal, vertical, etc.) are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indicator will also change accordingly.

[0037] Due to installation errors and other reasons, the parallel relationship referred to in the embodiments of this utility model may actually be an approximate parallel relationship, and the perpendicular relationship may actually be an approximate perpendicular relationship.

[0038] Example 1

[0039] A wind tunnel-based wind vane / wind direction sensor calibration and verification device includes a wind direction angle control unit 1, a data acquisition unit 2, and a setting and data display unit 3.

[0040] The wind direction angle control unit device 1 includes a base plate, a support platform, a servo motor 1.1, a servo motor transmission gear 1.2, a dial transmission gear 1.3, a dial 1.4, a fixing clamp 1.5, a cylindrical gear 1.6, a wind vane fixing connection plug 1.7, a limiter 1.8, and a structural shell.

[0041] Excluding the servo motor 1.1, servo motor drive gear 1.2, and fixing clamp 1.5, the wind direction angle control unit 1 has a vertical structure. The bottom of the vertical structure is a base plate, and a support platform is fixedly connected to the center of the upper surface of the base plate. The support platform is fixed to the base plate by bearings and can rotate around the central axis. A dial drive gear 1.3 is fixedly installed in the center of the upper surface of the support platform. The center of the dial drive gear 1.3 is a circular hole. One end of the gear of the dial drive gear 1.3 is engaged with the gear of the servo motor drive gear 1.2. The dial drive gear 1.3 and the servo motor drive gear 1.2 are composed of a set of helical gears. The other end of the servo motor drive gear 1.2 is fixedly connected to the transmission part of the servo motor 1.1 outside the vertical structure.

[0042] On the opposite side of the servo motor drive gear 1.2, there is a vertical cylindrical gear 1.6. The cylindrical gear 1.6 is a cylinder with an upper gear and a lower gear. The lower gear of the cylindrical gear 1.6 is embedded in the gear of the dial drive gear 1.3. The cylindrical gear 1.6 is engaged with the gear of the dial drive structure at the lower center of the dial 1.4 through the upper gear.

[0043] The 1.4 dial has a measurement range of 0° to 360° and a resolution of 1°.

[0044] Between the base plate and the dial 1.4 is a structural housing, which encloses the servo motor drive gear 1.2, the dial drive gear 1.3, the support platform, the cylindrical gear 1.6, and the dial drive structure at the lower center of the dial 1.4. The bottom of the structural housing is tightly fixed to the base plate, and there is a gap between the top of the structural housing and the dial 1.4. The top of the structural housing has a circular hole at its center. The lower end of the cylindrical gear 1.6 is vertically fixed to the base plate via a bearing, and the upper end of the cylindrical gear 1.6 is fixed to the upper end of the structural housing via a bearing.

[0045] The dial 1.4 is located directly above the dial drive gear 1.3. The dial 1.4 is fixedly mounted on the dial drive structure, which ensures that the dial 1.4 rotates around its central axis. The wind vane fixing connector 1.7 is fixedly connected to the upper surface of the dial 1.4. The wind vane fixing connector 1.7 is a cylindrical structure with a base, whose base is fixedly connected to the edge area of ​​the central circular hole on the upper surface of the dial 1.4. The wind vane fixing connector 1.7 is fixedly mounted on the support plate by multiple support columns passing through the dial 1.4, the dial drive structure at the lower center of the dial 1.4, and the central circular hole of the dial drive gear 1.3. On the platform, the wind vane fixing connector 1.7 is used to fix the wind vane / wind direction sensor to be verified and calibrated. The limiter 1.8 is fixedly installed on the structural shell. The limiter 1.8 is located directly above the servo motor drive gear 1.2. The limiter 1.8 is connected to the servo motor 1.1 through a signal line. The limiter 1.8 limits the voltage, current and power of the servo motor 1.1 to prevent it from exceeding the set safety range, thereby protecting the servo motor 1.1 and the circuit from damage. The fixing clamp 1.5 is fixedly installed on the lower surface of the base plate. The fixing clamp 1.5 is used to fix the wind direction angle control unit device 1 on a specific device inside the wind tunnel.

[0046] The data acquisition unit 2 includes a communication interface 2.1 and a microcontroller 2.2. The communication interface 2.1 is connected to the data output section of the wind vane / wind direction sensor to be tested and calibrated via a data transmission cable. The communication interface 2.1 is also connected to the servo motor 1.1 and the setting and display unit 3 via data transmission cables. The microcontroller 2.2 processes and converts the data transmitted from the wind vane / wind direction sensor to be tested and calibrated, and then transmits it to the setting and display unit 3.

[0047] The setting and display unit 3 includes a processor 3.1 and a display 3.2. The processor 3.1 processes the signals from the data acquisition unit 2 and then transmits the data to the display 3.2. The display 3.2 visualizes the data. The operator sets parameters through the processor 3.1, which then transmits the parameters to the microcontroller 2.2. The microcontroller 2.2 then controls the servo motor 1.1 to move.

[0048] The automatic working process of the wind vane / wind direction sensor calibration and verification device based on a wind tunnel according to this utility model is as follows:

[0049] S1: Fix the wind vane / wind direction sensor to be tested and calibrated to the wind vane fixing connector 1.7, and align the 0° line of the wind vane / wind direction sensor to be tested and calibrated with the 0° line of the scale 1.4 of this utility model;

[0050] S2: Fix the wind direction angle control unit 1 in the working section of the wind tunnel using the fixing clamp 1.5, so that the wind vane of the wind instrument / wind direction sensor to be tested and calibrated is located at the 0° line position, and the 0° line is parallel to the wind tunnel axis;

[0051] S3: Power on the device and preheat for 15 minutes to stabilize the operating current of each module;

[0052] S4: Start-up wind speed verification of the wind vane / wind direction sensor to be verified / calibrated: The operator sets parameters through processor 3.1 and controls servo motor 1.1 to rotate the wind vane of the wind vane / wind direction sensor to be verified / calibrated by 15°, starts the wind tunnel, and makes the wind speed inside the wind tunnel slowly increase. When the wind vane of the wind vane / wind direction sensor to be verified / calibrated begins to move in the direction of the wind tunnel axis, the wind speed value at this time is read, which is the start-up wind speed of the wind vane / wind direction sensor to be verified / calibrated.

[0053] S5: Verification of wind direction angle indication of the wind vane / wind direction sensor to be verified / calibrated: Position the wind vane of the wind vane / wind direction sensor to be verified / calibrated at the 0° line, and align the 0° line of the wind vane with the 0° line of the scale 1.4. The operator sets parameters through processor 3.1, and the system automatically runs by selecting 0°, 45°, 90°, 135°, 180°, 225°, 270°, and 315° as verification points. The wind vane rotates to the corresponding angle under the drive of servo motor 1.1. The error value is obtained based on the actual wind direction angle value (standard value) and the wind direction angle indication value displayed by the wind vane / wind direction sensor to be verified / calibrated (value under test). This utility model automatically reads and records the wind direction angle indication value of a calibration point three times. After completing the calibration of the current calibration point, the processor 3.1 controls the servo motor 1.1 to make the wind vane automatically rotate to the next calibration point, and completes the calibration of the wind direction angle indication value error of each calibration point one by one.

[0054] Example 2

[0055] A wind tunnel-based wind vane / wind direction sensor calibration and verification device includes a wind direction angle control unit 1, a data acquisition unit 2, and a setting and data display unit 3.

[0056] The wind direction angle control unit device 1 includes a base plate, a support platform, a servo motor 1.1, a servo motor transmission gear 1.2, a dial transmission gear 1.3, a dial 1.4, a fixing clamp 1.5, a cylindrical gear 1.6, a wind vane fixing connection plug 1.7, a limiter 1.8, and a structural shell.

[0057] Excluding the servo motor 1.1, servo motor drive gear 1.2, and fixing clamp 1.5, the wind direction angle control unit 1 has a vertical structure. The bottom of the vertical structure is a base plate, and a support platform is fixedly connected to the center of the upper surface of the base plate. The support platform is fixed to the base plate by bearings and can rotate around the central axis. A dial drive gear 1.3 is fixedly installed in the center of the upper surface of the support platform. The center of the dial drive gear 1.3 is a circular hole. One end of the gear of the dial drive gear 1.3 is engaged with the gear of the servo motor drive gear 1.2. The dial drive gear 1.3 and the servo motor drive gear 1.2 are composed of a set of helical gears. The other end of the servo motor drive gear 1.2 is fixedly connected to the transmission part of the servo motor 1.1 outside the vertical structure.

[0058] On the opposite side of the servo motor drive gear 1.2, there is a vertical cylindrical gear 1.6. The cylindrical gear 1.6 is a cylinder with an upper gear and a lower gear. The lower gear of the cylindrical gear 1.6 is embedded in the gear of the dial drive gear 1.3. The cylindrical gear 1.6 is engaged with the gear of the dial drive structure at the lower center of the dial 1.4 through the upper gear.

[0059] The 1.4 dial has a measurement range of 0° to 360° and a resolution of 1°.

[0060] Between the base plate and the dial 1.4 is a structural housing, which encloses the servo motor drive gear 1.2, the dial drive gear 1.3, the support platform, the cylindrical gear 1.6, and the dial drive structure at the lower center of the dial 1.4. The bottom of the structural housing is tightly fixed to the base plate, and there is a gap between the top of the structural housing and the dial 1.4. The top of the structural housing has a circular hole at its center. The lower end of the cylindrical gear 1.6 is vertically fixed to the base plate via a bearing, and the upper end of the cylindrical gear 1.6 is fixed to the upper end of the structural housing via a bearing.

[0061] The dial 1.4 is located directly above the dial drive gear 1.3. The dial 1.4 is fixedly mounted on the dial drive structure, which ensures that the dial 1.4 rotates around its central axis. The wind vane fixing connector 1.7 is fixedly connected to the upper surface of the dial 1.4. The wind vane fixing connector 1.7 is a cylindrical structure with a base, whose base is fixedly connected to the edge area of ​​the central circular hole on the upper surface of the dial 1.4. The wind vane fixing connector 1.7 is fixedly mounted on the support plate by multiple support columns passing through the dial 1.4, the dial drive structure at the lower center of the dial 1.4, and the central circular hole of the dial drive gear 1.3. On the platform, the wind vane fixing connector 1.7 is used to fix the wind vane / wind direction sensor to be verified and calibrated. The limiter 1.8 is fixedly installed on the structural shell. The limiter 1.8 is located directly above the servo motor drive gear 1.2. The limiter 1.8 is connected to the servo motor 1.1 through a signal line. The limiter 1.8 limits the voltage, current and power of the servo motor 1.1 to prevent it from exceeding the set safety range, thereby protecting the servo motor 1.1 and the circuit from damage. The fixing clamp 1.5 is fixedly installed on the lower surface of the base plate. The fixing clamp 1.5 is used to fix the wind direction angle control unit device 1 on a specific device inside the wind tunnel.

[0062] The data acquisition unit 2 includes a communication interface 2.1 and a microcontroller 2.2. The communication interface 2.1 is connected to the data output section of the wind vane / wind direction sensor to be tested and calibrated via a data transmission cable. The communication interface 2.1 is also connected to the servo motor 1.1 and the setting and display unit 3 via data transmission cables. The microcontroller 2.2 processes and converts the data transmitted from the wind vane / wind direction sensor to be tested and calibrated, and then transmits it to the setting and display unit 3.

[0063] The setting and display unit 3 includes a processor 3.1 and a display 3.2. The processor 3.1 processes the signals from the data acquisition unit 2 and then transmits the data to the display 3.2. The display 3.2 visualizes the data. The operator sets parameters through the processor 3.1, which then transmits the parameters to the microcontroller 2.2. The microcontroller 2.2 then controls the servo motor 1.1 to move.

[0064] The manual operation process of the wind vane / wind direction sensor calibration and verification device based on a wind tunnel according to this utility model is as follows:

[0065] S1: Fix the wind vane / wind direction sensor to be tested and calibrated to the wind vane fixing connector 1.7, and align the 0° line of the wind vane / wind direction sensor to be tested and calibrated with the 0° line of the scale 1.4 of this utility model;

[0066] S2: Fix the wind direction angle control unit 1 in the working section of the wind tunnel using the fixing clamp 1.5, so that the wind vane of the wind instrument / wind direction sensor to be tested and calibrated is located at the 0° line position, and the 0° line is parallel to the wind tunnel axis;

[0067] S3: Power on the device and preheat for 15 minutes to stabilize the operating current of each module;

[0068] S4: According to the actual calibration needs, the operator manually controls the processor 3.1 to make the servo motor 1.1 control the wind vane of the wind vane / wind direction sensor to be verified and calibrated to rotate through a specific angle relative to the 0° line of the scale 1.4, and the wind vane to rotate counterclockwise and clockwise.

[0069] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

[0070] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A wind tunnel-based wind vane / wind direction sensor verification, calibration device, comprising a wind direction angle control unit device (1), a data acquisition unit (2), a setting and data display unit (3), characterized in that: The wind direction angle control unit device (1) comprises a bottom plate, a support platform, a servo motor (1.1), a servo motor transmission gear (1.2), a dial transmission gear (1.3), a dial (1.4), a fixing clamp (1.5), a cylindrical gear (1.6), a wind direction instrument fixed connection plug-in (1.7), a stopper (1.8), and a structural shell. The wind direction angle control unit device (1) is a vertical structure, and the bottom end of the vertical structure is the bottom plate. A support platform is fixedly connected to the central upper surface of the bottom plate. The support platform is fixed on the bottom plate through a bearing and can rotate around the central axis. A dial transmission gear (1.3) is fixedly installed on the central upper surface of the support platform. The center of the dial transmission gear (1.3) is a circular hole. The gear of the dial transmission gear (1.3) is embedded with one end of the gear of the servo motor transmission gear (1.2). The dial transmission gear (1.3) and the servo motor transmission gear (1.2) are the gear of a spiral gear. The other end of the servo motor transmission gear (1.2) is fixedly connected with the transmission part of the servo motor (1.1) outside the vertical structure, The opposite side of the servo motor transmission gear (1.2) has a vertical cylindrical gear (1.6). The cylindrical gear (1.6) is a cylinder with an upper gear and a lower gear. The lower gear of the cylindrical gear (1.6) is embedded in the gear of the dial transmission gear (1.3). The cylindrical gear (1.6) is embedded with the gear of the dial transmission structure at the lower center of the dial (1.4) through the upper gear. There is a structural shell between the bottom plate and the dial (1.4). The structural shell wraps the servo motor transmission gear (1.2), the dial transmission gear (1.3), the support platform, the cylindrical gear (1.6), and the dial transmission structure at the lower center of the dial (1.4). The bottom end of the structural shell is fixedly connected to the bottom plate. There is a gap between the top end of the structural shell and the dial (1.4). The center of the top end of the structural shell is a circular hole. The lower end of the cylindrical gear (1.6) is fixedly installed on the bottom plate through a bearing. The upper end of the cylindrical gear (1.6) is fixedly installed on the upper end of the structural shell through a bearing. The dial (1.4) is located directly above the dial transmission gear (1.3), the dial (1.4) is fixedly installed on the dial transmission structure, the dial transmission structure ensures the dial (1.4) to rotate around the central axis, the wind direction instrument fixed connection plug-in (1.7) is fixedly connected on the upper surface of the dial (1.4), the wind direction instrument fixed connection plug-in (1.7) is a cylindrical structure with a base, the base is fixedly connected on the edge area of the central hole of the upper surface of the dial (1.4), the wind direction instrument fixed connection plug-in (1.7) passes through a plurality of support columns through the dial (1.4), the dial transmission structure in the central lower part of the dial (1.4), the circular hole in the middle of the dial transmission gear (1.3), and is fixedly installed on the support platform, the stopper (1.8) is fixedly installed on the structural shell, the stopper (1.8) is located directly above the servo motor transmission gear (1.2), the stopper (1.8) is connected with the servo motor (1.1) through a signal line, and the fixed clamp (1.5) is fixedly installed on the lower surface of the bottom plate.

2. The wind tunnel based wind vane / sensor calibrator of claim 1, wherein: The dial (1.4) rotates one circle, and the servo motor transmission gear (1.2) rotates 30 circles.

3. The wind tunnel based wind vane / sensor calibrator of claim 1, wherein: The measurement range of the dial (1.4) is 0°-360°, and the resolution is 1°.

4. The wind tunnel based wind vane / sensor calibrator of claim 1, wherein: The gear ratio of the servo motor (1.1) and the servo motor transmission gear (1.2) is 1:1.

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