CN114047357A - Calibration method and calibration device for special environment wind field sensor - Google Patents
Calibration method and calibration device for special environment wind field sensor Download PDFInfo
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- G01P21/00—Testing or calibrating of apparatus or devices covered by the preceding groups
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
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Abstract
The invention provides a calibration method and a calibration device for a special environment wind field sensor. The method is used for calibrating the characteristic parameters of the wind field sensor under low air pressure and special atmosphere, the wind field sensor is arranged above the electric turntable and can rotate in a plane of 360 degrees along with the electric turntable, the air pressure and atmosphere conditions in the closed chamber can be adjusted, the whole closed chamber can tolerate the temperature range of-20 ℃ to 40 ℃, the closed chamber is placed in a warm box, and the temperature-variable environment can be realized in the closed chamber.
Description
Technical Field
The invention relates to the technical field of measurement and testing, in particular to a calibration method and a calibration device for a special environment wind field sensor.
Background
In recent years, with the development of aerospace technologies in the fields of domestic close space detection, Mars detection and the like, the measurement of wind speed and wind direction parameters under the low-pressure special atmosphere condition is required. However, the conventional wind speed and direction calibration equipment in China at present cannot meet the high-precision calibration requirement of wind field parameters under special conditions, and the development process of special sensors in the field is restricted.
Disclosure of Invention
The invention provides a calibration method and a calibration device for a wind field sensor in a special environment, aiming at solving the problem of high-precision calibration of wind field parameters under special conditions, and realizing calibration of the wind field sensor under low-pressure and any atmosphere conditions. The device can be placed in a room temperature environment, the closed cavity of the main body part can also be placed in a constant temperature box device at the temperature of minus 20 ℃ to 40 ℃, and the calibration of the characteristic parameters of the wind field sensor in the variable temperature environment is realized through the environmental temperature regulation of the constant temperature box.
The invention provides a calibration method of a special environment wind field sensor, which comprises the following steps: s1, preparing a pressure atmosphere: adjusting the air pressure and atmosphere in the closed chamber to a state needing to be calibrated through an air pressure atmosphere adjusting system;
s2, wind speed and direction measurement: measuring the wind speed and the wind direction of a wind field sensor by using a sliding calibration system and recording the result;
s3, temperature-changing calibration: and (4) placing the closed chamber in an incubator according to the requirement, adjusting the temperature to the range to be calibrated, and repeating the step S2 after the temperature passes the test of the temperature test system until all the calibrations of the wind field sensor are completed.
In the method for calibrating the wind field sensor in the special environment, step S1 preferably includes the following steps:
s11, starting a mechanical vacuum pump, and pumping the internal air pressure of the closed chamber to be lower than 1 Pa;
s12, closing the extraction valve, opening the inflation valve, and filling the required atmosphere calibration gas into the closed cavity through the gas cylinder until the inside of the closed cavity is in a normal pressure state;
and S13, starting the mechanical vacuum pump, and pumping the internal air pressure of the closed chamber to the required air pressure condition.
In the method for calibrating the wind field sensor in the special environment, step S2 preferably includes the following steps:
s21, recording the numerical values of the temperature sensor and the air pressure sensor;
s22, adjusting motion parameters of the servo motor, wherein the motion parameters comprise acceleration time, motion speed, motion time and deceleration time;
s23, adjusting the direction of the wind field sensor through rotation of the electric turntable to serve as a wind direction reference;
s24, turning on a power switch of the wind field sensor, and starting to record output data of the wind field sensor;
s25, starting a servo motor to drive a wind field sensor to move, recording output data of the wind field sensor, output data of a laser ranging and velocimeter and the direction of an electric turntable, and calibrating wind speed and wind direction measurement results;
and S26, adjusting the motion parameters and the direction of the electric turntable, and returning to the step S21 until all the calibrations of the wind field sensor are completed.
As a preferable mode, in step S26, after each movement of the wind field sensor is stopped, the time interval from the next calibration is: the interval time of the air pressure environment less than 1000Pa is not less than 3 min; the interval time of 1000 Pa-0.01 MPa of the atmospheric pressure environment is not less than 5 min; the interval time of 0.01 MPa-0.1 MPa in the atmospheric pressure environment is not less than 10 min.
The invention provides a special environment wind field sensor calibration device, which comprises a closed chamber, a sliding calibration system, a temperature test system and an air pressure atmosphere adjusting system, wherein part of the sliding calibration system is arranged in the closed chamber, and part of the sliding calibration system is arranged outside the closed chamber; the sliding calibration system is used for driving the wind field sensor to slide and rotate in the closed cavity and measuring the wind speed and the wind direction, the temperature test system is used for testing the environmental temperature of the wind field sensor, and the air pressure atmosphere adjusting system is used for adjusting the air pressure atmosphere environment of the wind field sensor;
the sliding calibration system comprises a precise sliding rail arranged at the bottom in the closed chamber, a sliding table arranged at the upper part of the precise sliding rail and capable of moving along the direction of the precise sliding rail, an electric rotary table arranged at the top of the sliding table, a sliding rod arranged at the top in the closed chamber, a sliding block arranged on the sliding rod, a signal lead fixed on the sliding block, a quick-opening door with a window arranged at the front end of the closed chamber, a laser distance measuring and speed measuring instrument arranged outside the quick-opening door with the window, a magnetic fluid and a servo motor which are arranged outside the closed chamber and sequentially connected with the precise sliding rail;
the electric turntable can rotate in a plane of 360 degrees, the top of the electric turntable is provided with a metal round rod for supporting the wind field sensor, the number of the sliding blocks is at least 2, the starting end of the signal lead is arranged on one side of the electric turntable and is electrically connected with the wind field sensor, and the tail end of the signal lead is connected with an aviation plug fixed on the wall surface of the closed cavity.
According to the calibration device for the special environment wind field sensor, as an optimal mode, the number of the metal round rods is 4, and the wind field sensor is arranged above the electric turntable through four vertical metal round rods;
the signal lead is connected with the wind field sensor, then fixed on the metal round bar, and then led to the slide block to be fixed in a plurality of strands respectively.
According to the calibration device for the wind field sensor in the special environment, as a preferred mode, the temperature testing system comprises the temperature sensor which is hung in the closed cavity, the temperature sensor is connected with the aviation plug which is fixed on the side face of the closed cavity, and the closed cavity is used for being placed in the incubator to adjust the internal temperature.
According to the calibration device for the special environment wind field sensor, as a preferable mode, the temperature sensors are platinum resistors, and the number of the temperature sensors is at least 2.
The calibration device for the wind field sensor in the special environment comprises an air pressure sensor penetrating through the wall of a closed chamber, an air extraction valve and an air charging valve which are arranged on the wall of the closed chamber, a mechanical vacuum pump which is arranged outside the closed chamber and connected with the air extraction valve through a corrugated pipe, and an air bottle which is connected with the air charging valve through an air pipeline.
According to the calibration device for the special environment wind field sensor, as an optimal mode, the air pressure sensor and the closed chamber are sealed by the raw material belt and the silicon rubber.
The invention provides a special environment wind field sensor calibration device, wherein the main part of the calibration device is a cuboid closed cavity, the length, the width and the height of the cavity in the closed cavity are respectively 4m, 0.5m and 0.5m, a precise slide rail is arranged at the bottom of the closed cavity, an electric turntable is arranged on a precise slide rail motion sliding table, and the sliding table can drive the electric turntable to move along the slide rail. The wind field sensor is arranged above the electric turntable through four vertical metal round rods and can rotate in a plane of 360 degrees along with the electric turntable. The sliding rod is installed above the side face of the inner wall of the sealed cavity, the sliding rod groove is internally provided with the plurality of small sliding blocks, the wind field sensor signal lead is divided into a plurality of strands and is respectively fixed on one small sliding block, the wind field sensor can move on the precise sliding rail through the small sliding block to pull the signal lead, the interference to the movement of the wind field sensor can be avoided, and the signal lead is electrically connected with the outside through the aviation plug. The precise slide rail is directly connected with a magnetic fluid outside the closed chamber, and the magnetic fluid is connected with the servo motor through a coupler;
a plurality of temperature sensors and an air pressure sensor are arranged in the closed cavity, wherein the temperature sensors are electrically connected with the outside through aviation plugs, the air pressure sensor penetrates through the wall of the closed cavity and is installed, and sealing is realized by adopting a raw material belt and silicon rubber;
the closed cavity is provided with an air extraction valve and an inflation valve respectively, the air extraction valve is connected with the mechanical vacuum pump through a corrugated pipe, and the inflation valve is connected with the gas cylinder through a gas pipeline;
the front end of the closed chamber is provided with a window quick-opening door, and a laser ranging and velocimeter is arranged outside the window quick-opening door and used for measuring the movement speed of the wind field sensor and used as a wind speed reference.
The special environment wind field sensor calibration device comprises the following use flows:
(1) starting a vacuum pump, and pumping the air pressure in the closed chamber to be below 1 Pa;
(2) closing the air extraction valve, opening the inflation valve, and filling gas into the closed cavity through the gas cylinder until the inside of the closed cavity is in a normal pressure state;
(3) starting a vacuum pump, and pumping the air pressure in the closed chamber to a required air pressure condition;
(4) recording the values of the temperature sensor and the air pressure sensor;
(5) adjusting motion parameters of a servo motor, mainly including acceleration time, motion speed, motion time and deceleration time;
(6) the direction of a wind field sensor is adjusted through an electric turntable to serve as a wind direction reference;
(7) opening a power switch of the wind field sensor, and starting to record the output data of the wind field sensor;
(8) starting a servo motor, enabling a wind field sensor to move, and simultaneously recording the output of the wind field sensor, the output of a laser ranging and velocimeter and the direction of an electric turntable, so as to realize calibration of wind speed and wind direction measurement results;
(9) repeating the steps (5) to (8) to realize calibration of the measurement results of different wind speeds and wind directions;
(10) the temperature and the air pressure of the closed cavity are changed as required, and the calibration of the measurement results of different wind speeds and directions under the conditions of variable temperature and variable air pressure is realized.
Furthermore, the calibration device of the special environment wind field sensor is characterized in that the temperature sensor is a platinum resistor and is suspended in the cavity.
Furthermore, in the special environment wind field sensor calibration device, a sensor signal lead is fixed on the metal round rod after being led out from the wind field sensor, and then is led to the small sliding block to be respectively fixed in a plurality of strands.
Furthermore, a special environment wind field sensor calibration device is characterized in that a wind field sensor is installed above the electric turntable through four vertical metal round rods, the length of each metal round rod is not less than 10cm, and the diameter of each metal round rod is 2-3 mm.
Furthermore, the calibration device of the wind field sensor in the special environment, after the wind field sensor in the process (8) stops moving each time, the time interval from the next calibration is as follows: the air pressure is within 1000Pa, and the time is not less than 3 min; the air pressure environment is 1000 Pa-0.01 MPa, and the time is not less than 5 min; 0.01 MPa-0.1 MPa, not less than 10 min.
The invention has the following advantages:
(1) the invention provides a calibration device for a wind field sensor under a low-pressure special atmosphere, which simulates actual wind speed by adopting the relative motion of the wind field sensor, has the equipment calibration precision superior to 0.5 percent, can realize the calibration environments of 0-0.1 MPa, any atmosphere condition and the like, and has important significance for the examination and verification of the wind speed and direction sensor in the field.
(2) The technical scheme provided by the invention can be further expanded, for example, a liquid nitrogen cold screen and a heating wire can be additionally arranged in the calibration device, so that the calibration in a wide temperature zone range is realized; in addition, the equipment has the capability of working at the temperature of-20 ℃ to 40 ℃, and can be directly placed in a warm box to realize the calibration of the environment with variable temperature.
Drawings
FIG. 1 is a schematic structural diagram of a calibration device for a wind field sensor in a special environment;
FIG. 2 is a flow chart of a calibration method of a special environment wind field sensor;
FIG. 3 is a flowchart of a calibration method for a special environment wind field sensor, step S1;
fig. 4 is a flowchart of a calibration method of a special environment wind field sensor, step S2.
Reference numerals:
1. closing the chamber; 2. a slide calibration system; 21. a precision slide rail; 22. a sliding table; 23. an electric turntable; 24. a slide bar; 25. a slider; 26. a signal lead; 27. a quick-opening door with a window; 28. a laser distance and speed measuring instrument; 29. a magnetic fluid; 2a, a servo motor; 3. a temperature testing system; 31. a temperature sensor; 4. a barometric atmosphere regulation system; 41. an air pressure sensor; 42. an air extraction valve; 43. an inflation valve; 44. a mechanical vacuum pump; 45. a gas cylinder.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example 1
As shown in fig. 1, a calibration device for a wind field sensor in a special environment comprises a closed chamber 1, a sliding calibration system 2, a temperature test system 3 and an air pressure atmosphere regulation system 4, wherein part of the sliding calibration system is arranged in the closed chamber 1, and part of the sliding calibration system is arranged outside the closed chamber 1; the sliding calibration system 2 is used for driving the wind field sensor to slide and rotate in the closed chamber 1 and measuring wind speed and wind direction, the temperature test system 3 is used for testing the temperature environment of the wind field sensor, and the air pressure atmosphere adjusting system 4 is used for adjusting the air pressure atmosphere environment of the wind field sensor;
the sliding calibration system 2 comprises a precision slide rail 21 arranged at the bottom in the closed chamber 1, a sliding table 22 arranged at the upper part of the precision slide rail 21 and capable of moving along the direction of the precision slide rail 21, an electric turntable 23 arranged at the top of the sliding table 22, a slide rod 24 arranged at the top in the closed chamber 1, a slide block 25 arranged on the slide rod 24, a signal lead 26 fixed on the slide block 25, a quick-opening door 27 with a window arranged at the front end of the closed chamber 1, a laser ranging velocimeter 28 arranged outside the quick-opening door 27 with the window, a magnetic fluid 29 arranged outside the closed chamber 1 and sequentially connected with the precision slide rail 21, and a servo motor 2 a;
the electric turntable 23 rotates in a plane of 360 degrees, the top of the electric turntable 23 is provided with metal round rods for supporting the wind field sensors, the number of the sliding blocks 25 is at least 2, the starting end of the signal lead 26 is arranged on one side of the electric turntable 23 and is electrically connected with the wind field sensors, and the tail end of the signal lead 26 is connected with an aviation plug fixed on the wall surface of the closed cavity 1;
the number of the metal round rods is 4, and the wind field sensor is arranged above the electric turntable 23 through four vertical metal round rods;
the signal lead 26 is connected with the wind field sensor, then fixed on the metal round bar, and then led to the slide block 25 to be fixed in multiple strands respectively;
the temperature testing system 3 comprises a temperature sensor 31 suspended in the closed chamber 1, the temperature sensor 31 is connected with an aviation plug fixed on the side surface of the closed chamber 1, and the closed chamber 1 is used for being placed in an incubator to carry out internal temperature regulation;
the temperature sensors 31 are platinum resistors, and the number of the temperature sensors 31 is at least 2;
the air pressure atmosphere regulating system 4 comprises an air pressure sensor 41 penetrating through the wall of the closed chamber 1, an air suction valve 42 and an air charging valve 43 which are arranged on the wall of the closed chamber 1, a mechanical vacuum pump 44 which is arranged outside the closed chamber 1 and is connected with the air suction valve 42 through a corrugated pipe, and an air bottle 45 which is connected with the air charging valve 43 through an air pipeline;
the air pressure sensor 41 and the closed chamber 1 are sealed by using a raw material tape and silicon rubber.
As shown in fig. 2, a calibration method for a special environment wind field sensor includes the following steps: s1, preparing a pressure atmosphere: adjusting the air pressure and atmosphere inside the closed chamber 1 to a state needing calibration through an air pressure atmosphere adjusting system 4;
as shown in fig. 3, S11, starting the mechanical vacuum pump 44, and pumping the internal pressure of the sealed chamber 1 to 1Pa or less;
s12, closing the extraction valve 42, opening the inflation valve 43, and filling the gas needed by atmosphere calibration into the closed chamber 1 through the gas cylinder 45 until the inside of the closed chamber 1 is in a normal pressure state;
s13, starting the mechanical vacuum pump 44, and pumping the internal air pressure of the closed chamber 1 to the required air pressure condition;
s2, wind speed and direction measurement: measuring the wind speed and the wind direction of the wind field sensor by using the sliding calibration system 2 and recording the result;
as shown in fig. 4, S21, recording the values of the temperature sensor 31 and the air pressure sensor 41;
s22, adjusting the motion parameters of the servo motor 2a, wherein the motion parameters comprise acceleration time, motion speed, motion time and deceleration time;
s23, adjusting the direction of the wind field sensor through the rotation of the electric turntable 23 to be used as a wind direction reference;
s24, turning on a power switch of the wind field sensor, and starting to record output data of the wind field sensor;
s25, starting the servo motor 2a to drive the wind field sensor to move, recording the output data of the wind field sensor, the output data of the laser ranging and velocimeter 28 and the direction of the electric turntable 23, and calibrating the measurement results of the wind speed and the wind direction;
s26, adjusting the motion parameters and the direction of the electric turntable 23, and returning to the step S21 until all the calibrations of the wind field sensors are completed;
in step S26, after the wind field sensor stops moving each time, the interval time from the next calibration is: the air pressure is within 1000Pa, and the time is not less than 3 min; the air pressure environment is 1000 Pa-0.01 MPa, and the time is not less than 5 min; 0.01 MPa-0.1 MPa, not less than 10 min.
S3, temperature calibration: and (4) placing the closed chamber 1 in an incubator according to the requirement, adjusting the temperature to the range to be calibrated, and repeating the step S2 after the temperature passes through the temperature test system (3) for testing until all the calibration of the wind field sensor is completed.
Example 2
As shown in figure 1, the special environment wind field sensor calibration device is characterized in that the main body part of the experimental device is a cuboid closed cavity 1, the length, the width and the height of the inner cavity of the closed cavity 1 are respectively 4m, 0.5m and 0.5m, channel steel is adopted for reinforcing the outside of the closed cavity 1, a synchronous belt type linear precision slide rail 21 is installed at the bottom of the closed cavity 1, and an electric turntable 23 is installed on a sliding table 22 and can move along the slide rail 21. The wind field sensor is arranged above the electric turntable 23 through four vertical metal round rods and can rotate with the electric turntable 23 in a plane of 360 degrees; a sliding rod 24 is installed above the side face of the inner wall of the closed cavity 1, a plurality of small sliding blocks 25 are arranged in grooves of the sliding rod 24, a wind field sensor signal lead 26 is divided into a plurality of strands and respectively fixed on one small sliding block 25, the wind field sensor can move on the precise sliding rail 21 through the small sliding blocks 25 to pull the signal lead 26 to move, interference on the movement of the wind field sensor cannot be generated, and the signal lead 26 is electrically connected with the outside through an aviation plug. The precision slide rail 21 is directly connected with a magnetic fluid 29 outside the closed chamber 1, and the magnetic fluid 29 is connected with the servo motor 2a through a coupler.
A Pt1000 temperature sensor 31 is respectively arranged at the front end and the rear end in the closed chamber 1, a low-pressure sensor 41 is arranged in the middle of the closed chamber 1, the temperature sensor 31 is electrically connected with the outside through an aviation plug, the pressure sensor 41 penetrates through the wall of the closed chamber 1 to be installed, and sealing is achieved through a raw material belt and silicon rubber.
The closed chamber 1 is provided with an air extraction valve 42 and an inflation valve 43, wherein the air extraction valve 42 is connected with a mechanical vacuum pump 44 through a corrugated pipe, and the inflation valve 43 is connected with an air bottle 45 through an air pipeline.
The front end of the closed chamber 1 is provided with a window quick-opening door 27, and a laser ranging and velocimeter 28 is arranged outside the window quick-opening door 27 and used for measuring the movement speed of the wind field sensor to serve as a wind speed reference.
The sensor signal lead 26 is fixed on the metal round rod after being led out from the wind field sensor, and then led to the slide block 25 to be respectively fixed in a plurality of strands.
The wind field sensor is installed above the electric turntable 23 through four vertical metal round rods, and the length of each metal round rod is 10cm, and the diameter of each metal round rod is 3 mm.
The use flow is as follows:
(1) starting a vacuum pump 44, and pumping the air pressure in the closed chamber 1 to about 1 Pa;
(2) closing the air extraction valve 42, opening the inflation valve 43, and filling carbon dioxide into the closed chamber 1 through the carbon dioxide gas bottle 45 until the inside of the closed chamber 1 is in a normal pressure state;
(3) starting a vacuum pump 44, and pumping the air pressure in the closed chamber 1 to 10 KPa;
(4) recording the values of the temperature sensor 31 and the air pressure sensor 41;
(5) adjusting the motion parameters of a servo motor 2a, setting the acceleration time to be 0.5s, the motion speed to be 1m/s, the motion time to be 2s and the deceleration time to be 0.5 s;
(6) adjusting the electric turntable 23 to enable an included angle between the axial direction of the wind field sensor and the running direction to be theta, and taking the included angle as a wind direction reference;
(7) opening a power supply of the wind field sensor, and starting to record output data of the wind field sensor;
(8) starting the servo motor 2a, enabling the wind field sensor to move, simultaneously recording the output of the wind field sensor and the output of the laser ranging and velocimeter 28, and taking the output of the laser ranging and velocimeter 28 as a wind speed reference, wherein the wind direction reference is theta;
(9) adjusting the servo motor 2a, setting the movement speeds to be 0.8m/s, 0.6m/s, 0.4m/s and 0.2m/s respectively, and repeating the steps (5) to (8) to realize the calibration of the measuring results of different wind speeds in the theta angle wind direction;
(10) and adjusting an electric turntable 23, changing the deflection angle theta of the wind field sensor in the same axial running direction, wherein the theta range is 0-360 degrees, the interval is 15 degrees, repeating the steps (7) - (8), and verifying a wind direction calculation model.
And (3) after the wind field sensor stops moving every time in the process (8), the distance from the next calibration is not less than 10 min.
In practical application, the experimental device can be placed in a constant temperature incubator or a liquid nitrogen cold screen and a heating wire are additionally arranged in the closed chamber 1, so that the calibration of wind speed and wind direction at different temperatures is realized. In addition, the wind speed calibration range which can be directly realized by the invention is as follows: and 0-1 m/s, and converting the measurement result under the high-air-pressure low-air-speed condition into the low-air-pressure high-air-speed environment by combining with the basic theory of hydrodynamics, thereby indirectly realizing the calibration of the low-air-pressure high-air-speed environment.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. A calibration method for a special environment wind field sensor is characterized by comprising the following steps: the method comprises the following steps: s1, preparing a pressure atmosphere: adjusting the air pressure and atmosphere inside the closed chamber (1) to a state needing to be calibrated through an air pressure atmosphere adjusting system (4);
s2, wind speed and direction measurement: measuring the wind speed and the wind direction of a wind field sensor by using a sliding calibration system (2) and recording the result;
s3, temperature-changing calibration: and (3) placing the closed chamber (1) in an incubator according to the requirement, adjusting the temperature to the range to be calibrated, and repeating the step S2 after the temperature passes through the temperature test system (3) for testing until all the calibrations of the wind field sensor are completed.
2. The special environment wind field sensor calibration method according to claim 1, characterized in that: step S1 includes the following steps:
s11, starting a mechanical vacuum pump (44), and pumping the internal air pressure of the closed chamber (1) to be less than 1 Pa;
s12, closing the extraction valve (42), opening the inflation valve (43), and filling gas needed by atmosphere calibration into the closed chamber (1) through the gas cylinder (45) until the inside of the closed chamber (1) is in a normal pressure state;
and S13, starting the mechanical vacuum pump (44) to pump the internal air pressure of the closed chamber (1) to the required air pressure condition.
3. The special environment wind field sensor calibration method according to claim 1, characterized in that: step S2 includes the following steps:
s21, recording the numerical values of the temperature sensor (31) and the air pressure sensor (41);
s22, adjusting the motion parameters of the servo motor (2a), wherein the motion parameters comprise acceleration time, motion speed, motion time and deceleration time;
s23, adjusting the direction of the wind field sensor through rotation of the electric turntable (23) to serve as a wind direction reference;
s24, opening a power switch of the wind field sensor, and starting to record output data of the wind field sensor;
s25, starting the servo motor (2a) to drive the wind field sensor to move, recording output data of the wind field sensor, output data of the laser ranging and velocimeter (28) and the direction of the electric turntable (23), and calibrating wind speed and wind direction measurement results;
s26, adjusting the motion parameters and the direction of the electric rotating disc (23), and returning to the step S21 until all the calibration of the wind field sensor is completed.
4. A special environment wind field sensor calibration method according to claim 3, characterized in that: in step S26, after each movement of the wind field sensor is stopped, the interval time from the next calibration is: the interval time of the air pressure environment less than 1000Pa is not less than 3 min; the interval time of 1000 Pa-0.01 MPa of the atmospheric pressure environment is not less than 5 min; the interval time of 0.01 MPa-0.1 MPa in the atmospheric pressure environment is not less than 10 min.
5. The utility model provides a special environment wind field sensor calibration device which characterized in that: the device comprises a closed chamber (1), a sliding calibration system (2), a temperature test system (3) and an air pressure atmosphere adjusting system (4), wherein part of the sliding calibration system is arranged inside the closed chamber (1) and part of the sliding calibration system is arranged outside the closed chamber (1); the sliding calibration system (2) is used for driving the wind field sensor to slide and rotate in the closed chamber (1) and measuring wind speed and wind direction, the temperature test system (3) is used for testing the temperature environment of the wind field sensor, and the air pressure atmosphere adjusting system (4) is used for adjusting the air pressure atmosphere environment of the wind field sensor;
the sliding calibration system (2) comprises a precision slide rail (21) arranged at the bottom in the closed chamber (1), a sliding table (22) arranged at the upper part of the precision slide rail (21) and capable of moving along the direction of the precision slide rail (21), an electric turntable (23) arranged at the top of the sliding table (22), a sliding rod (24) arranged at the top in the closed chamber (1), a sliding block (25) arranged on the sliding rod (24), a signal lead (26) fixed on the sliding block (25), a quick opening door (27) with a window arranged at the front end of the closed chamber (1), a laser range finder (28) arranged outside the quick opening door (27) with the window, a magnetic fluid (29) arranged outside the closed chamber (1) and sequentially connected with the precision slide rail (21), and a servo motor (2 a);
360 planar rotations can be carried out in electric turntable (23), electric turntable (23) top sets up and is used for supporting wind field sensor's metal round bar, the quantity of slider (25) is 2 at least, the initiating terminal setting of signal lead wire (26) is in electric turntable (23) one side, with wind field sensor electrical connection, the end of signal lead wire (26) with fix the aviation plug of airtight cavity (1) wall links to each other.
6. A special environment wind field sensor calibration device according to claim 5, characterized in that: the number of the metal round rods is 4, and the wind field sensor is arranged above the electric turntable (23) through four vertical metal round rods;
the signal lead (26) is connected with the wind field sensor, then is fixed on the metal round rod, and then is led to the sliding block (25) to be fixed in a multi-strand manner.
7. A special environment wind field sensor calibration device according to claim 5, characterized in that: the temperature testing system (3) comprises a temperature sensor (31) hung inside the closed chamber (1), the temperature sensor (31) is connected with an aviation plug fixed on the side surface of the closed chamber (1), and the closed chamber (1) is used for being placed in a thermostat to adjust the internal temperature.
8. The special environment wind field sensor calibration device according to claim 7, wherein: the temperature sensors (31) are platinum resistors, and the number of the temperature sensors (31) is at least 2.
9. A special environment wind field sensor calibration device according to claim 5, characterized in that: the air pressure atmosphere adjusting system (4) comprises an air pressure sensor (41) penetrating through the wall surface of the closed chamber (1), an air suction valve (42) and an air charging valve (43) which are installed on the wall surface of the closed chamber (1), a mechanical vacuum pump (44) which is arranged outside the closed chamber (1) and connected with the air suction valve (42) through a corrugated pipe, and an air bottle (45) which is connected with the air charging valve (43) through an air pipeline.
10. A special environment wind field sensor calibration device according to claim 9, characterized in that: and a raw material belt and silicon rubber are used for sealing between the air pressure sensor (41) and the closed chamber (1).
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