Laser auxiliary mechanism of wind sensor testing device and wind sensor testing device

Abstract

The present application discloses a laser auxiliary mechanism and a wind sensor test device, wherein the laser auxiliary mechanism includes: a lower dial, which is relatively fixed to a bracket, and the circumference of the lower dial has angle scales; a lower pointer, which is rotatably mounted on the lower dial; an upper dial, which is located above the lower dial, and the circumference of the upper dial has angle scales, and the upper dial and the lower dial are coaxially arranged; an upper pointer, which is rotatably mounted on the upper dial; a laser transmitter, which is relatively fixed to the upper pointer, and when the upper pointer rotates, it can drive the laser transmitter to rotate synchronously; a laser signal receiver, which is mounted on the lower pointer. The present application can change the position of the laser transmitter emitting the laser by adjusting the position of the upper pointer, and the laser transmitter can project the laser onto the lower dial. When the wind sensor blocks the laser, the surface wind sensor rotates into place. The laser auxiliary mechanism of the present application can assist in the installation and adjustment of the wind sensor, which is more convenient and intuitive than the prior art.

Description

Technical Field

[0001] The invention relates to the field of wind sensor testing, and in particular to a laser auxiliary mechanism of a wind sensor testing device and a wind sensor testing device. Background Art

[0002] Wind is one of the most important observation elements in meteorological observation. Wind has a significant impact on industrial and agricultural production, transportation and people's lives. Strong wind is one of the main disastrous weather in my country. Strong wind also enhances evaporation, causing crop moisture imbalance and drought. Strong winds in winter often cause people and animals in pastoral areas to get lost and freeze to death due to wind and snow and poor visibility. At the same time, blowing snow will block roads, making rescue work difficult and aggravating the disaster. Strong winds in spring are very destructive, uprooting trees, breaking seedlings, destroying fields and houses. Typhoons in summer mainly endanger the safety of cities and people, causing tall crops and mature crops and fruit trees to fall, and grains and fruits to fall. At the same time, strong winds are a cheap, pollution-free, inexhaustible and valuable energy source. There is a broad prospect for the development of this resource.

[0003] Wind sensors used in automatic stations such as meteorological departments and airports are usually three-cup wind speed sensors and wing-type wind vanes. At present, the testing, inspection and metrological verification of wind sensors are all carried out under horizontal wind conditions in wind tunnels. During the test, it is often necessary to adjust the deflection angle of the wind sensor relative to the axial direction of the wind tunnel. In the prior art, a universal angle ruler is used to measure the rotation angle, which is cumbersome to operate and has low accuracy. Summary of the invention

[0004] In view of the above problems, the present invention overcomes at least one disadvantage and provides a laser auxiliary mechanism for a wind sensor testing device and a wind sensor testing device.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A laser auxiliary mechanism for a wind sensor test device, the wind sensor test device comprising a bracket and a support rod arranged on the bracket, the upper end of the support rod is used to install the wind sensor, and the laser auxiliary mechanism comprises:

[0007] The lower scale plate is fixed relative to the bracket, and the circumference of the lower scale plate has angle scale lines;

[0008] A lower pointer is rotatably mounted on the lower scale plate, the lower pointer is used to point to the angle scale line of the lower scale plate, and the rotation axis of the lower pointer coincides with the axis of the lower scale plate;

[0009] The upper dial is located above the lower dial. The upper dial has angle scale lines on its circumference. The upper dial and the lower dial are coaxially arranged. After the wind sensor is installed on the support rod, the wind sensor is between the upper dial and the lower dial.

[0010] An upper pointer is rotatably mounted on the upper dial, and the upper pointer is used to point to the angle scale line of the upper dial;

[0011] The laser emitter is relatively fixed to the upper pointer, and when the upper pointer rotates, it can drive the laser emitter to rotate synchronously, and the laser emitter is used to emit laser to the lower dial;

[0012] The laser signal receiver is installed on the lower pointer and is used to collect the laser signal emitted by the laser transmitter.

[0013] By adjusting the position of the upper pointer, the position at which the laser emitter emits the laser can be changed, and the laser emitter can project the laser onto the lower dial. When the wind sensor blocks the laser, the surface wind sensor rotates into place. The laser auxiliary mechanism of the present application can assist in the installation and adjustment of the wind sensor, which is more convenient and intuitive than the prior art.

[0014] When in use, as the wind sensor rotates, the wind sensor can block the signal emitted by the laser transmitter, so that the laser signal receiver cannot receive the signal. For example, when testing the wind sensor, the sensor rotates. When the designated part blocks the laser, information such as the time data of the wind sensor rotating from the starting angle to the laser beam angle can be obtained. The laser auxiliary mechanism can assist in realizing various detection operations.

[0015] In one embodiment of the present invention, the support rod is relatively fixed to the bracket, and the support rod is coaxially arranged with the lower scale plate; or, the support rod can adjust its position relative to the bracket, and when the laser auxiliary mechanism is working, the support rod is coaxially arranged with the lower scale plate. That is, the support rod can be fixed to the bracket or can adjust its position relative to the bracket. Regardless of the structure, when the laser auxiliary mechanism is needed, the support rod is coaxially arranged with the lower scale plate.

[0016] In one embodiment of the present invention, the laser transmitter is a linear laser transmitter.

[0017] By emitting a straight line of laser light, the position of components such as sub-sensors can be adjusted more intuitively and conveniently.

[0018] In one embodiment of the present invention, the lower scale plate is a hollow structure, and the support rod passes through the hollow portion of the lower scale plate. This arrangement makes the entire structure more compact.

[0019] In one embodiment of the present invention, the upper scale plate is a hollow structure, the upper pointer includes a rotating member rotatably mounted at the center of the upper scale plate, and the laser emitter is mounted on the rotating member. This arrangement facilitates setting the position of the laser reflector in the middle of the upper scale plate.

[0020] In one embodiment of the present invention, the lower scale plate and the upper scale plate are both arranged horizontally.

[0021] In one embodiment of the present invention, the support rod is a retractable support rod.

[0022] The retractable support rod can conveniently adjust the position of the wind sensor, so that the wind sensor can be located at the center of the working section of the wind tunnel during testing, so that the device can adapt to wind sensors of various sizes. In actual use, the retractable support rod can adopt the retractable structure of an umbrella or a selfie stick.

[0023] The present application also discloses a wind sensor testing device, comprising the laser auxiliary mechanism described above.

[0024] In one embodiment of the present invention, it further includes:

[0025] A horizontal rotating platform is installed on the upper part of the bracket, and the horizontal rotating platform has a rotating seat that can rotate around a vertical axis;

[0026] The angular displacement platform is installed on the rotating seat. The angular displacement platform has a fixed seat that can rotate around a horizontal axis. The support rod is fixed to the fixed seat.

[0027] The upper end of the support rod is used to install the wind sensor. The support rod can adjust the angle in the horizontal position through the horizontal rotating platform and can adjust the angle in the vertical position through the angle displacement platform. Therefore, the wind sensor test device of the present application can adjust the position of the wind sensor at multiple angles. When in use, the wind sensor test device is installed in a wind tunnel, and can test the wind sensor under non-horizontal wind conditions of various angles and orientations.

[0028] In one embodiment of the present invention, a locking mechanism is further included. The wind sensor includes a body and a rotating member rotatably disposed on the upper portion of the body. The locking mechanism includes:

[0029] A first mounting seat, used for fixing on the body;

[0030] A locking rod is slidably arranged on the mounting seat, and has a locking working position and an unlocking working position. When in the locking working position, the locking rod moves upward to cooperate with the rotating member to prevent the rotating member from rotating. When in the unlocking working position, the locking rod moves downward and no longer cooperates with the rotating member, so that the rotating member can rotate normally.

[0031] A return spring is sleeved on the locking rod, one end of the return spring cooperates with the first mounting seat, and the other end cooperates with the locking rod, and is used to apply elastic force to the locking rod to keep the locking rod in the locking working position;

[0032] A pull wire, a first end of which is connected to the locking rod;

[0033] The driving element has a movable part that can be extended or rotated, and the movable part is connected to the second end of the pull wire. When the driving element is working, it can drive the pull wire to move, so that the locking rod overcomes the elastic force of the return spring and switches from the locking working position to the unlocking working position.

[0034] Working principle of the locking mechanism: When the driving element is not working, the reset spring applies force to the locking rod, so that the locking rod remains in an upwardly extended state, thereby maintaining the locking working position. In the locking working position, the locking rod is used to cooperate with the rotating part to prevent the rotating part from rotating; when the driving element is working, the driving element drives the pull wire to move, so that the locking rod overcomes the elastic force of the reset spring and switches from the locking working position to the unlocking working position. At this time, the rotating part of the wind sensor can rotate unimpeded. You only need to control the operation of the driving element to quickly and conveniently switch between the two working states of the locking rod, which is very convenient to use. In actual use, the locking mechanism can realize the stationary and release of the wind sensor under any wind speed conditions.

[0035] By setting the pull wire, the driving element can be set farther away (away from the wind sensor). This structure can prevent the driving element from having a significant impact on the wind field near the rotating part.

[0036] The beneficial effects of the present invention are as follows: by adjusting the position of the upper pointer, the position at which the laser emitter emits the laser can be changed, and the laser emitter can project the laser onto the lower dial. When the wind sensor blocks the laser, the surface wind sensor rotates into place. The laser auxiliary mechanism of the present application can assist in the installation and adjustment of the wind sensor, which is more convenient and intuitive than the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 is a structural schematic diagram of a wind sensor testing device according to Embodiment 1;

[0038] Figure 2 is a side view of the wind sensor testing device of Example 1;

[0039] Figure 3 is a side view of the wind sensor test device of Example 1 from another angle;

[0040] Figure 4 It is a wind direction sensor;

[0041] Figure 5 is another structural schematic diagram of the locking lever;

[0042] Figure 6 is a structural schematic diagram of a wind sensor testing device according to Embodiment 2;

[0043] Figure 7 It is a schematic diagram of the upper dial;

[0044] Figure 8 It is a schematic diagram of a laser transmitter emitting laser;

[0045] Fig. 9 It is a signal diagram collected by the laser signal receiver.

[0046] The reference numerals in the figures are:

[0047] 1. Wind sensor; 2. Main body; 3. Rotating member; 4. Rod; 5. First mounting seat; 6. Locking rod; 7. Reset spring; 8. Pull wire; 9. Driving element; 10. Large diameter portion; 11. Small diameter portion; 12. Positioning groove; 13. Sheath; 14. Clip; 15. First recessed area; 16. Second recessed area; 17. Bracket; 18. Horizontal rotating table; 19. Rotating seat; 20. Angular displacement table; 21. Fixed seat; 22. Support rod; 23. Adjustment foot pad; 24. Second mounting seat; 25. Lower dial; 26. Lower pointer; 27. Upper dial; 28. Upper pointer; 29. ​​Laser transmitter; 30. Laser signal receiver; 31. Rotating member. DETAILED DESCRIPTION

[0048] The present invention is described in detail below in conjunction with the accompanying drawings.

[0049] Example 1

[0050] like Figure 1 As shown, a wind sensor testing device includes a fixing base 21 and a support rod 22 connected to the fixing base 21, and the support rod 22 is used to install the wind sensor 1. Figure 1 and 4 As shown, in actual use, the wind sensor 1 can be a wind speed sensor (such as a wind cup) or a wind direction sensor (such as a wind vane). The wind sensor 1 includes a main body 2 and a rotating member 3 rotatably arranged on the upper part of the main body 2.

[0051] like Figure 1 , 2 As shown in 3, the wind sensor test device also includes a locking mechanism, and the locking mechanism includes:

[0052] A first mounting seat 5, used for fixing on the body 2;

[0053] The locking rod 6 is slidably arranged on the mounting seat. The locking rod 6 has a locking working position and an unlocking working position. When in the locking working position, the locking rod 6 moves upward to cooperate with the rotating member 3 to prevent the rotating member 3 from rotating. When in the unlocking working position, the locking rod 6 moves downward and no longer cooperates with the rotating member 3, so that the rotating member 3 can rotate normally.

[0054] A return spring 7 is sleeved on the locking rod 6, one end of the return spring 7 cooperates with the first mounting seat 5, and the other end cooperates with the locking rod 6, and is used to apply elastic force to the locking rod 6 to keep the locking rod 6 in the locking working position;

[0055] A pull wire 8, a first end of the pull wire 8 is connected to the locking rod 6;

[0056] The driving element 9 has a movable part (omitted and not drawn in the figure) that can be extended or rotated. The movable part is connected to the second end of the pull wire 8. When the driving element 9 is working, it can drive the pull wire 8 to move, so that the locking rod 6 overcomes the elastic force of the return spring 7 and switches from the locking working position to the unlocking working position.

[0057] Working principle of the locking mechanism: When the driving element 9 is not working, the reset spring 7 applies a force to the locking rod 6, so that the locking rod 6 remains in an upwardly extended state, thereby remaining in the locked working position. In the locked working position, the locking rod is used to cooperate with the rotating member 3 to prevent the rotating member 3 from rotating; when the driving element 9 is working, the driving element 9 drives the pull wire 8 to move, so that the locking rod 6 overcomes the elastic force of the reset spring 7 and switches from the locked working position to the unlocked working position. At this time, the rotating member 3 of the wind sensor 1 can rotate without obstacles. The switching between the two working states of the locking rod 6 can be realized quickly and conveniently by controlling the driving element 9 to work, which is very convenient to use. In actual use, the wind sensor 1 can be stationary and released under any wind speed conditions through the locking mechanism.

[0058] In the present application, the driving element 9 can be arranged farther away (away from the wind sensor 1 ) by arranging the pull wire 8 . This structure can prevent the driving element 9 from having a significant impact on the wind field near the rotating member 3 .

[0059] like Figure 3 As shown, in this embodiment, the locking rod 6 includes a large diameter portion 10 located at the lower side and a small diameter portion 11 located at the upper side, and the small diameter portion 11 is used to cooperate with the rotating member 3. The small diameter portion 11 is close to the rotating member 3, and the small diameter portion 11 has a small area and has little effect on the wind field.

[0060] The rotating member 3 has a rod 4. In other embodiments, Figure 5 As shown, the upper portion of the locking rod 6 has a positioning groove 12 that cooperates with the rod portion 4. Through the cooperation of the positioning groove 12 and the rod portion 4, the rotating member 3 can be better limited.

[0061] like Figure 1 As shown, in actual use, the driving element 9 is a linear motor, a cylinder, an electromagnet or a rotary motor.

[0062] like Figure 1 and 3 As shown, in this embodiment, the pull wire 8 is a steel wire, and the locking mechanism further includes a sheath 13 which is sheathed on the steel wire.

[0063] In actual use, the first mounting seat 5 has a sliding hole (omitted and not marked in the figure), the locking rod 6 is slidably set on the sliding hole, and the locking rod 6 has an anti-detachment part (omitted and not marked in the figure) that cooperates with the mounting seat. The anti-detachment part is used to prevent the locking rod 6 from completely detaching from the sliding hole.

[0064] like Figure 1 and 3 As shown, in this embodiment, the first mounting seat 5 is fixed relative to the body 2 through the mounting structure; the mounting structure includes two clips 14, each clip 14 has a first recessed area 15, the two first recessed areas 15 form a first clamping hole (omitted and not marked in the figure) that matches the body 2, and the two clips 14 are connected by fasteners. The mounting structure is arranged in this way to facilitate the adjustment of angles and heights. In actual use, the fasteners can be locked after the angles and heights of the clips 14 are adjusted to the right position.

[0065] like Figure 1 and 3 As shown, in this embodiment, the two clips 14 of the mounting structure both have a second recessed area 16 , and the two second recessed areas 16 form a second clamping hole (omitted and not marked in the figure) that cooperates with the first mounting seat 5 .

[0066] In this embodiment, the fasteners include bolts and nuts; fasteners are provided on both sides of the first recessed area 15 and the second recessed area 16. In actual use, the bolts can be ordinary bolts or butterfly bolts. When they are butterfly bolts, they can be tightened or loosened directly by hand.

[0067] like Figure 1 As shown, the wind sensor testing device of this embodiment further includes:

[0068] Bracket 17;

[0069] A horizontal rotating platform 18 is installed on the upper part of the bracket 17, and the horizontal rotating platform 18 has a rotating seat 19 that can rotate around a vertical axis;

[0070] The angular displacement platform 20 is mounted on the rotating seat 19 . The angular displacement platform 20 has a fixed seat 21 that can rotate around a horizontal axis. The lower end of the support rod 22 is fixed to the fixed seat 21 , and the upper end is used to install the wind sensor 1 .

[0071] The upper end of the support rod 22 is used to install the wind sensor 1. The support rod 22 can adjust the angle in the horizontal position through the horizontal rotating platform 18, and can adjust the angle in the vertical position through the angle displacement platform 20. Therefore, the wind sensor test device of the present application can adjust the position of the wind sensor 1 at multiple angles. When in use, the wind sensor test device is installed in a wind tunnel, and can test the wind sensor 1 under non-horizontal wind conditions of various angles and orientations.

[0072] In actual use, the horizontal rotating table 18 can adopt the existing horizontal rotating table 18 that can rotate 360°. The horizontal rotating table 18 generally includes a first base, a rotating base 19 rotatably mounted on the first base, and a first servo motor. A first gear is installed on the rotating base 19, and a second gear is installed on the output shaft of the first servo motor (if a reducer is installed, it is the output shaft of the reducer), and the first gear and the second gear are meshed.

[0073] In actual use, the angle displacement table 20 can adopt the angle displacement table 20 of the existing technology, such as the ±45° angle displacement table 20. The angle displacement table 20 generally includes a second base, a fixed base 21 rotatably mounted on the second base, and a second servo motor. The output shaft of the second servo motor is linked to the fixed base 21 through a transmission structure (a gear set or a worm gear structure, etc.).

[0074] like Figure 1 As shown, in this embodiment, the support rod 22 is a telescopic support rod 22 .

[0075] The retractable support rod 22 can conveniently adjust the position of the wind sensor 1, so that the wind sensor 1 can be located at the center of the working section of the wind tunnel during testing, so that the device can adapt to wind sensors 1 of various sizes. In actual use, the retractable support rod 22 can adopt the retractable structure of an umbrella or a selfie stick.

[0076] like Figure 1 As shown, in this embodiment, an adjustment pad 23 is installed at the bottom of the bracket 17. The adjustment pad 23 can adjust the height of the wind sensor test device and is suitable for different wind tunnels.

[0077] like Figure 1 As shown, in this embodiment, the locking mechanism further includes a plurality of second mounting seats 24 fixed on the support rod 22 . The second mounting seats 24 are fixed to the sheath 13 to limit the position of the sheath 13 .

[0078] The wind sensor testing device of this embodiment can realize 360-degree rotation positioning test of the wind sensor 1 by using the horizontal rotating platform 18 , the angular displacement platform 20 and the locking mechanism, and can realize the tilt test of the wind sensor 1 by combining with the ±45° angular displacement platform 20 .

[0079] Example 2

[0080] like Figure 6 and 7 As shown, this embodiment discloses a wind sensor testing device, which is different from the embodiment 1 in that it also includes a laser auxiliary mechanism. The laser auxiliary mechanism of this embodiment includes:

[0081] The lower scale plate 25 is fixed relative to the bracket 17, and the circumference of the lower scale plate 25 has angle scale lines (omitted and not drawn in the figure);

[0082] A lower pointer 26 is rotatably mounted on the lower scale plate 25. The lower pointer 26 is used to point to the angle scale line of the lower scale plate 25. The rotation axis of the lower pointer 26 coincides with the axis of the lower scale plate 25.

[0083] The upper scale plate 27 is located above the lower scale plate 25. The upper scale plate 27 has angle scale lines (omitted and not drawn) on its circumference. The upper scale plate 27 and the lower scale plate 25 are coaxially arranged. After the wind sensor 1 is installed on the support rod 22, the wind sensor 1 is between the upper scale plate 27 and the lower scale plate 25.

[0084] An upper pointer 28 is rotatably mounted on the upper scale plate 27, and the upper pointer 28 is used to point to an angle scale line of the upper scale plate 27;

[0085] The laser emitter 29 is relatively fixed to the upper pointer 28. When the upper pointer 28 rotates, it can drive the laser emitter 29 to rotate synchronously. The laser emitter 29 is used to emit laser light to the lower dial 25;

[0086] The laser signal receiver 30 is installed on the lower pointer 26 and is used to collect the laser signal emitted by the laser emitter 29 .

[0087] By adjusting the position of the upper pointer 28, the position at which the laser emitter 29 emits the laser can be changed, and the laser emitter 29 can project the laser onto the lower dial 25. When the wind sensor 1 blocks the laser, the surface wind sensor 1 rotates into place. The laser auxiliary mechanism of the present application can assist in the installation and adjustment of the wind sensor 1, which is more convenient and intuitive than the prior art.

[0088] When in use, as the wind sensor 1 rotates, the wind sensor 1 can block the signal emitted by the laser transmitter 29, so that the laser signal receiver 30 cannot receive the signal. For example, when testing the wind sensor 1, the sensor rotates. When the designated part blocks the laser, information such as the time data when the wind sensor 1 rotates from the starting angle to the laser beam angle can be obtained. The laser auxiliary mechanism can assist in realizing various detection operations.

[0089] In this embodiment, the support rod 22 can adjust its position relative to the bracket 17. When the laser auxiliary mechanism is working, the support rod 22 and the lower scale plate 25 are coaxially arranged.

[0090] In actual use, the support rod 22 can also be directly fixed to the bracket 17, that is, the support rod 22 cannot adjust the angle.

[0091] like Figure 6As shown, in this embodiment, the laser emitter 29 is a straight laser emitter 29. By emitting straight laser, the position of components such as sub-sensors can be adjusted more intuitively and conveniently.

[0092] like Figure 6 As shown, in this embodiment, the lower dial 25 is a hollow structure, and the support rod 22 passes through the hollow part of the lower dial 25. This arrangement makes the entire structure more compact. The upper dial 27 is a hollow structure, and the upper pointer 28 includes a rotating member 31 rotatably mounted at the center of the upper dial 27, and the laser emitter 29 is mounted on the rotating member 31. This arrangement makes it convenient to set the position of the laser reflector in the middle of the upper dial 27.

[0093] like Figure 6 As shown, in this embodiment, the lower scale plate and the upper scale plate are both arranged horizontally.

[0094] When the wind sensor is a wind vane (wind direction sensor), the wind sensor test device of this embodiment is combined with a wind tunnel to detect the starting wind speed, resolution, error and lag distance of the wind vane. When the wind sensor is a wind cup (wind speed sensor), the wind sensor test device of this embodiment is combined with a wind tunnel to detect the starting wind speed, resolution and distance constant of the wind cup. The specific detection method is as follows:

[0095] Detect the starting wind speed of the wind vane - fix the wind vane vertically, adjust the support rod so that the wind vane is located at the center of the cross-sectional area of ​​the wind tunnel working section; rotate the wind vane to a position of 20° and 340° with the wind tunnel axis, use the locking mechanism to fix the wind vane, and gradually increase the wind speed from 0.1m / s for testing. When the wind speed is stable, unlock the locking mechanism, and record the wind speed if the wind vane moves. Repeat three times and compare the average values ​​at different angles. The maximum value of the average value is the starting wind speed of the wind vane.

[0096] Test the resolution of the wind vane - fix the wind vane vertically, adjust the support rod so that the wind vane is located at the center of the cross-sectional area of ​​the wind tunnel working section; rotate the wind vane to 0°, 30°, 90°, 180°, 240°, and 270° with the axial direction of the wind tunnel (use the precise scale position of the laser transmitter target on the top), and use the locking mechanism to fix the wind vane; test at a wind speed of 5m / s, unlock the locking mechanism when the wind speed stabilizes, and record the value output by the wind vane after the wind vane stabilizes, and compare it with the detection angle. The difference between the two is the wind vane error.

[0097] Detect the hysteresis distance of the wind vane (the hysteresis distance refers to the distance that the airflow passes through the wind direction sensor during the time it takes for the wind vane to return to 50% of the initial deflection angle after being released from a certain initial deflection angle at a certain wind speed) - fix the wind vane vertically, adjust the support rod so that the wind vane is located at the center of the cross-sectional area of ​​the wind tunnel working section; use the upper dial and upper pointer to adjust the laser transmitter to the specified deflection angle, and then lock and adjust the wind vane through the locking mechanism to make it consistent with the direction of the straight line laser; then adjust the lower pointer to make the laser signal receiver at 50% of the specified deflection angle; start the wind tunnel and unlock the locking mechanism after it reaches the set wind speed. At this time, the system records the release time and sets it to the 0 time point, and collects laser signal receivers at high speed. When the wind vane rotates to block the straight line laser (see Figure 8 ) As the laser is gradually blocked and removed by the wind vane, e.g. Fig. 9 As shown, a falling and rising response will appear on the graph, and the lowest point time of the curve is taken as the lag distance of the wind vane.

[0098] Detect the wind cup starting wind speed - fix the wind cup vertically, adjust the support rod so that the wind cup is located at the center of the cross-sectional area of ​​the wind tunnel working section, and when the wind cup is stationary, gradually increase the wind speed by 0.1m / s to test. When the wind cup changes from stationary to continuous rotation, stop increasing the wind speed. The average value of three repetitions is the starting wind speed of the wind cup.

[0099] Check the resolution of the wind cup - fix the wind cup vertically and adjust the support rod to make the wind cup located at the center of the cross-sectional area of ​​the wind tunnel working section. The difference value of the wind cup output showing the smallest change in wind speed is the wind cup resolution.

[0100] Detect the wind cup distance constant (the distance constant of the wind cup is a physical quantity that characterizes the degree of response of the wind cup to wind speed changes. It is equal to the distance the airflow flows through the sensor when the anemometer responds to 63.2% (1-1 / e) of the wind speed step change, that is, the product of the wind speed and the time constant at that wind speed, usually in meters) - fix the wind cup vertically, adjust the support rod so that the wind cup is located at the center of the cross-sectional area of ​​the working section of the wind tunnel; use the locking mechanism to fix the wind cup. Start the wind tunnel and adjust the wind speed to the set number, release the locking mechanism and set the recorded time to 0. At this time, the system automatically records the output data of the wind speed sensor and displays it in the form of a curve, and separately marks the time when the wind speed step change is 63.2% and calculates the distance constant (unit: meter) from it.

[0101] In actual use, the wind sensor testing device of the present application can also be used to detect wind vane errors.

[0102] The above description is only a preferred embodiment of the present invention, and does not limit the patent protection scope of the present invention. Any equivalent structural transformation made by using the contents of the present invention and the drawings, directly or indirectly used in other related technical fields, is also included in the protection scope of the present invention.

Claims

1. A laser-assisted mechanism for a wind sensor test device, the wind sensor test device comprising a bracket and a support rod arranged on the bracket, the upper end of the support rod being used to mount a wind sensor, characterized in that: Laser-assisted mechanisms include: The lower scale plate is fixed relative to the bracket, and the circumference of the lower scale plate has angle scale lines; A lower pointer is rotatably mounted on the lower scale plate, the lower pointer is used to point to the angle scale line of the lower scale plate, and the rotation axis of the lower pointer coincides with the axis of the lower scale plate; The upper dial is located above the lower dial. The upper dial has angle scale lines on its circumference. The upper dial and the lower dial are coaxially arranged. After the wind sensor is installed on the support rod, the wind sensor is between the upper dial and the lower dial. An upper pointer is rotatably mounted on the upper dial, and the upper pointer is used to point to the angle scale line of the upper dial; The laser emitter is relatively fixed to the upper pointer, and when the upper pointer rotates, it can drive the laser emitter to rotate synchronously, and the laser emitter is used to emit laser to the lower dial; The laser signal receiver is installed on the lower pointer and is used to collect the laser signal emitted by the laser transmitter.

2. The laser-assisted mechanism of the wind sensor testing device according to claim 1, characterized in that: The support rod is relatively fixed to the bracket, and the support rod is coaxially arranged with the lower scale plate; or, the support rod can adjust its position relative to the bracket, and when the laser auxiliary mechanism is working, the support rod is coaxially arranged with the lower scale plate.

3. The laser-assisted mechanism of the wind sensor testing device according to claim 1, characterized in that: The laser transmitter is a straight laser transmitter.

4. The laser-assisted mechanism of the wind sensor testing device according to claim 1, characterized in that: The lower scale plate is a hollow structure, and the support rod passes through the hollow portion of the lower scale plate.

5. The laser-assisted mechanism of the wind sensor testing device according to claim 3, characterized in that: The upper scale plate is a hollow structure, the upper pointer comprises a rotating member rotatably mounted at the center of the upper scale plate, and the laser transmitter is mounted on the rotating member.

6. The laser-assisted mechanism of the wind sensor testing device according to claim 1, characterized in that: The lower scale plate and the upper scale plate are both arranged horizontally.

7. The laser-assisted mechanism of the wind sensor testing device according to claim 1, characterized in that: The support rod is a telescopic support rod.

8. A wind sensor testing device, characterized in that: It includes the laser-assisted mechanism described in any one of claims 1 and 3 to 7.

9. The wind sensor testing device according to claim 8, characterized in that: Also includes: A horizontal rotating platform is installed on the upper part of the bracket, and the horizontal rotating platform has a rotating seat that can rotate around a vertical axis; The angular displacement platform is installed on the rotating seat. The angular displacement platform has a fixed seat that can rotate around a horizontal axis. The support rod is fixed to the fixed seat.

10. The wind sensor testing device according to claim 9, characterized in that: The wind sensor further comprises a locking mechanism, wherein the wind sensor comprises a body and a rotating member rotatably arranged on the upper part of the body, and the locking mechanism comprises: A first mounting seat, used for fixing on the body; A locking rod is slidably arranged on the mounting seat, and has a locking working position and an unlocking working position. When in the locking working position, the locking rod moves upward to cooperate with the rotating member to prevent the rotating member from rotating. When in the unlocking working position, the locking rod moves downward and no longer cooperates with the rotating member, so that the rotating member can rotate normally. A return spring is sleeved on the locking rod, one end of the return spring cooperates with the first mounting seat, and the other end cooperates with the locking rod, and is used to apply elastic force to the locking rod to keep the locking rod in the locking working position; A pull wire, a first end of which is connected to the locking rod; The driving element has a movable part that can be extended or rotated, and the movable part is connected to the second end of the pull wire. When the driving element is working, it can drive the pull wire to move, so that the locking rod overcomes the elastic force of the return spring and switches from the locking working position to the unlocking working position.

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