A heading control panel for unmanned aerial vehicle

Abstract

The present invention discloses a heading control panel for an unmanned aerial vehicle, belonging to the field of unmanned aerial vehicle operation; it includes a handle assembly and a switch damping device, the handle assembly includes a scale panel, an indicator plate, a plate cap, a limit plate, a shaft sleeve, a fixing pin, a potentiometer mounting plate and a potentiometer, and the switch damping device includes a first fixed plate, a second fixed plate, a third fixed plate, a damping assembly, a switch touch assembly, a micro switch, a connecting column and a circuit board; the plate cap can synchronously rotate the indicator plate and the potentiometer shaft, and further the switch touch top rod and the switch touch bottom rod of the switch touch assembly are axially displaced, the switch touch bottom rod contacts with the micro switch, and the micro switch is closed, and the single chip microcomputer converts the values ​​of the potentiometer and the compensation potentiometer into the heading value output corresponding to the indicator plate at present in real time. In practical applications, the heading control panel is easy to operate by hand, and the output position is accurate. Compared with the traditional heading control method in the past, it is convenient for operators to control the heading of the unmanned aerial vehicle.

Description

Technical Field

[0001] The invention belongs to the field of unmanned aerial vehicle operation, and in particular relates to a heading control panel of a unmanned aerial vehicle. Background Art

[0002] When a drone is flying, quantitatively adjusting the drone's heading or controlling the drone's directional flight is a very important and frequent operation. The existing method is to drag the heading control cursor on the software interface with a mouse or manipulate the drone's attitude control stick to adjust the heading. Adjusting the heading with a mouse has the problem of frequently switching the mouse between heading control and other operations. Especially when the heading control area in the software interface is far away from other operating areas, the mouse is required to move quickly and accurately, which brings inconvenience to the operator and affects the immediacy of heading control. In addition, operating the drone's attitude control stick to adjust the heading is to gradually adjust the heading by continuously adjusting the drone's attitude, and it is impossible to output a quantitative heading control amount in real time. In addition, when it is necessary to continuously send a continuous heading control amount to the drone in some specific circumstances, it is very inconvenient to operate with a mouse and a drone's attitude control stick. Summary of the invention

[0003] Technical issues to be solved:

[0004] In order to avoid the shortcomings of the prior art, the present invention proposes a heading control panel for a drone, where an operator holds the control panel by hand, rotates it to a specified heading angle, and presses the control panel to send a quantitative heading control amount to the drone. The operator can also continue to press and rotate the control panel to send a continuous heading control amount to the drone.

[0005] The technical solution of the present invention is: a heading control panel for an unmanned aerial vehicle, characterized in that: it comprises a handle assembly and a switch damping device, the two being coaxially arranged;

[0006] The handle assembly comprises a scale panel, an indicating disk, a disk cap, a limit plate, a bushing, a fixing pin, a potentiometer mounting disk and a potentiometer; the potentiometer is fixed on the potentiometer mounting disk, and its potentiometer shaft passes through the central through hole of the potentiometer mounting disk, the scale panel and the bushing in sequence, and the potentiometer shaft and the bushing are fixed by a fixing pin passing through radially; the indicating disk is a circular plate structure, a cylindrical boss is arranged at the center of its upper end surface, the outer peripheral surface of the cylindrical boss is provided with a thread, and a kidney-shaped through hole is arranged at the center axis; the cross-sectional shape of the bushing is kidney-shaped, and it is coaxially sleeved in the kidney-shaped through hole of the indicating disk, and it is a clearance fit, and the axial length of the bushing is greater than the axial length of the kidney-shaped through hole of the indicating disk; a limit plate is installed on the upper end of the bushing to prevent the indicating disk from detaching from the upper end of the bushing; the central hole of the disk cap is provided with an internal thread, which is installed in cooperation with the external thread of the indicating disk, and the indicating disk and the potentiometer shaft can be rotated synchronously by rotating the disk cap;

[0007] The switch damping device comprises a first fixing plate, a second fixing plate, a third fixing plate, a damping assembly, a switch touch assembly, a micro switch, a connecting column and a circuit board; the first fixing plate, the second fixing plate and the third fixing plate are parallel to each other and coaxially arranged, wherein a round through hole is opened at the center of the first fixing plate and the second fixing plate for placing the potentiometer; a plurality of damping assemblies and a plurality of switch touch assemblies are uniformly distributed between the first fixing plate and the second fixing plate along the circumferential direction, and the damping assemblies and the switch touch assemblies are alternately arranged, and their central axes are parallel to the central axis of the first fixing plate; the second fixing plate and the third fixing plate are fixedly connected by a connecting column arranged along the circumferential direction; a plurality of micro switches are uniformly distributed on the end surface of the third fixing plate along the circumferential direction, and are arranged one by one corresponding to the switch touch assemblies; the circuit board is fixed to the third fixing plate;

[0008] The damping assembly comprises a damping push rod, a damping adjustment spring, an adjustment bolt and a damping assembly housing; the damping assembly housing is a circular tube structure, and its two ends are respectively fixed to the first fixing plate and the second fixing plate; the damping push rod, the damping adjustment spring and the adjustment bolt are coaxially installed in the damping assembly housing in sequence, and one end of the damping push rod passes through the first fixing plate and the scale panel in sequence to contact the lower surface of the indicator disk, so as to provide friction for the rotation of the indicator disk; the other end of the damping push rod is provided with a protrusion along the circumferential direction, which cooperates with the first fixing plate to limit the position; the adjustment bolt is threadedly matched with the inner circumferential surface of the lower end of the damping assembly housing, and its axial position is changed by rotating the adjustment bolt, thereby changing the compression state of the damping adjustment spring, thereby adjusting the pressure of the damping adjustment spring on the damping push rod, and the pressure of the damping push rod on the lower surface of the indicator disk;

[0009] The switch touch assembly comprises a switch touch top rod, a buffer spring, a limit spring, a switch touch bottom rod and a switch touch assembly housing; the switch touch top rod and the switch touch bottom rod are both coaxially provided with a circular plate at one end; the switch touch assembly housing is a circular tube structure, and its two ends are respectively fixed to the first fixing plate and the second fixing plate; the switch touch top rod, the buffer spring, the switch touch bottom rod and the limit spring are coaxially installed in the switch touch assembly housing in sequence; the switch touch top rod passes through the first fixing plate and the scale panel in sequence, and contacts the lower surface of the indicator plate Correspondingly, when the indicator disk is pressed downward, the switch touch top rod is squeezed by the lower surface of the indicator disk, and when the indicator disk is not pressed downward, there is a gap between the switch touch top rod and the lower surface of the indicator disk; one end of the circular plate of the switch touch top rod cooperates with the first fixed plate to limit; the switch touch bottom rod passes through the second fixed plate and is opposite to the touch head of the micro switch; the buffer spring is located between the switch touch top rod and the circular plate of the switch touch bottom rod, and the limit spring is sleeved on the switch touch bottom rod and is located between the circular plate of the switch touch bottom rod and the second fixed plate;

[0010] The first fixing plate is coaxially fixed with the scale panel;

[0011] When the disk cap is rotated or pressed, the indicator disk moves axially, pushing the switch touch top rod and the switch touch bottom rod of the switch touch assembly to axially displace, thereby closing the micro switch.

[0012] A further technical solution of the present invention is that the number of the damping assembly, the switch touch assembly and the micro switch are all three.

[0013] A further technical solution of the present invention is: three arc-shaped grooves are opened on the end surface of the potentiometer mounting disk in the circumferential direction for adjusting the mounting angle of the potentiometer; the potentiometer mounting disk is mounted below the scale panel by three sets of screws passing through the three arc-shaped grooves respectively; when the mounting angle of the potentiometer needs to be adjusted, the connecting screws between the potentiometer mounting disk and the scale panel are loosened, and the potentiometer mounting disk is rotated to adjust the mounting angle of the potentiometer.

[0014] A further technical solution of the present invention is: three damping push rod through holes and three switch touch push rod through holes are evenly distributed on the scale panel; a circular indicator disk stop boss is arranged at the center of its upper end surface, and when the indicator disk is pressed, a certain gap is ensured between the indicator disk and the upper surface of the scale panel to prevent the indicator disk from contacting the upper surface of the scale panel, thereby avoiding friction between the indicator disk and the upper surface of the scale panel when the indicator disk is rotated.

[0015] A further technical solution of the present invention is that a potentiometer shaft hole is also provided at the center of the scale panel.

[0016] A further technical solution of the present invention is: short scale lines are marked on the scale panel every 2 degrees, long scale lines are marked every 10 degrees, and scale values ​​are marked near the long scale lines, which are 0, 10, 20, 30 to 360 respectively; an indicator arrow is marked on the indicator disk, and the scale value of the scale panel pointed by the indicator arrow is the heading value.

[0017] A further technical solution of the present invention is that the kidney-shaped hole in the center of the indicator disc has a height of 15 mm, the shaft sleeve with a kidney-shaped cross-section has a height of 20 mm, and the indicator disc is installed on the shaft sleeve and can slide 5 mm relative to the shaft sleeve along the axial direction.

[0018] A further technical solution of the present invention is: the circuit board includes a single-chip microcomputer and a compensation potentiometer for zero position compensation, and the single-chip microcomputer is respectively connected to three micro switches, a potentiometer, and a compensation potentiometer; when one of the micro switches is closed, the single-chip microcomputer collects data from the potentiometer and the compensation potentiometer, adds the potentiometer data and the compensation potentiometer data, and converts them into a heading value and outputs them through its serial port. The compensation potentiometer serves to calibrate the heading value output by the single-chip microcomputer.

[0019] A further technical solution of the present invention is: the machine model of the single chip is C8051F404.

[0020] Beneficial Effects

[0021] The beneficial effects of the present invention are as follows: the present invention is based on a heading control panel for an unmanned aerial vehicle, which mainly includes a disk cap, an indicator disk, a scale panel, a potentiometer, a compensation potentiometer, a damping component, a switch touch component, a micro switch, and a single-chip microcomputer. Press and rotate the disk cap and the indicator disk by hand, and touch the micro switch through the switch touch component. The single-chip microcomputer adds the output data of the potentiometer and the output data of the compensation potentiometer in real time to obtain a cumulative value, and then converts the cumulative value into the heading value output corresponding to the current indicator disk. Among them, the compensation potentiometer is mainly used to calibrate the heading value output by the single-chip microcomputer, and the damping component provides friction for the rotation of the disk cap and the indicator disk to ensure that the indicator disk rotates accurately to the specified position. In practical applications, the heading control panel is easy to operate by hand, and the output position is accurate. Compared with the traditional heading control method, it is convenient for operators to control the heading of the unmanned aerial vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is an exploded view of the heading control panel of the present invention.

[0023] Figure 2 This is an exploded view of the handle assembly of the present invention.

[0024] Figure 3 This is a diagram of the handle assembly of the present invention.

[0025] Figure 4 The indicator plate of the present invention is installed with the shaft sleeve.

[0026] Figure 5 Potentiometer installation of the present invention.

[0027] Figure 6 This is the scale panel of the present invention.

[0028] Figure 7 It is the scale panel and indicator plate identification of the present invention.

[0029] Figure 8 This is an exploded view of the switch damping device of the present invention.

[0030] Fig. 9 It is the first fixing plate of the present invention.

[0031] Fig.10 This is the second fixing plate of the present invention.

[0032] Fig.11 The damping assembly of the present invention is installed.

[0033] Fig.12The switch touch assembly of the present invention is installed.

[0034] Fig.13 It is the circuit connection of the present invention.

[0035] Fig.14 This is the heading value calculation of the present invention.

[0036] Description of reference numerals: 1. Handle assembly 2. Switch damping device 3. Scale panel 4. First fixing plate 5. Indicator plate 6. Damping push rod 7. Switch touch push rod 8. Plate cap 9. Limiting plate 10. Bushing 11. Fixing pin 12. Potentiometer mounting plate 13. Potentiometer 14. Potentiometer shaft 15. Kidney-shaped hole 16. Arc-shaped slide groove 17. Damping push rod through hole 18. Switch touch push rod through hole 19. Indicator plate stop boss 20. Potentiometer shaft hole 21. Indicator arrow 22. Damping assembly 23. Switch 2. Switch touch assembly 24. Second fixing plate 25. Third fixing plate 26. Micro switch 27. Connecting column 28. Circuit board 29. Through hole of top rod of damping assembly 30. Through hole of top rod of switch touch assembly 31 Through hole of damping assembly adjustment 32. Through hole of bottom rod of switch touch assembly 33. Damping adjustment spring 34. Adjusting bolt 35. Damping assembly housing 36. Buffer spring 37. Limit spring 38. Switch touch bottom rod 39. Switch touch assembly housing 40. Touch head 41. Single chip microcomputer 42. Compensation potentiometer.

[0037] a. Potentiometer data b. Compensation potentiometer data c. Accumulated value d. Accumulated angle value k. Conversion coefficient. DETAILED DESCRIPTION

[0038] The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be construed as limiting the present invention.

[0039] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0040] See also Figure 1The present invention provides a heading control panel for an unmanned aerial vehicle, which is composed of a handle assembly 1 and a switch damping device 2. The first fixing plate 4 of the switch damping device 2 is connected to the scale panel 3 of the handle assembly 1, so that the handle assembly 1 and the switch damping device 2 are fixedly connected as a whole. The three damping top rods 6 on the switch damping device 2 pass through the through holes on the scale panel 3 and contact the lower surface of the indicator disk 5 in the handle assembly 1, providing friction for the rotation of the indicator disk 5. The three switch touch top rods 7 on the switch damping device 2 pass through the through holes on the scale panel 3 and correspond to the lower surface of the indicator disk 5 in the handle assembly 1. When the indicator disk 5 is pressed, the indicator disk 5 pushes the three switch touch top rods 7 to trigger the three micro switches in the switch damping device 2. When the indicator disk 5 is not pressed, there is a certain gap between the indicator disk 5 and the three switch touch top rods 7.

[0041] See also Figure 2 , Figure 3 , Figure 4 The handle assembly of the present invention comprises a scale panel 3, an indicator disk 5, a disk cap 8, a limit plate 9, a shaft sleeve 10, a fixing pin 11, a potentiometer mounting disk 12, and a potentiometer 13. The disk cap 8 is connected to the external thread at the central protrusion of the indicator disk 5 through the internal thread of the center hole. The kidney-shaped hole 15 in the center of the indicator disk 5 is matched and connected with the shaft sleeve 10 with a kidney-shaped cross-section. The limit plate 9 is installed on the upper end of the shaft sleeve 10 to prevent the indicator disk 5 from detaching. The fixing pin 11 passes through the shaft sleeve 10 and the potentiometer shaft 14 to realize the fixed connection between the shaft sleeve 10 and the potentiometer shaft 14. By rotating the disk cap 8, the indicator disk 5 and the potentiometer shaft 14 can be rotated synchronously.

[0042] See also Figure 4 The kidney-shaped hole 15 at the center of the indicator plate 5 of the present invention has a height of 15 mm, the shaft sleeve 10 with a kidney-shaped cross-section has a height of 20 mm, and the indicator plate 5 is mounted on the shaft sleeve 10 and can slide 5 mm relative to the shaft sleeve 10 along the axial direction.

[0043] See also Figure 3 , Figure 5 The potentiometer 13 of the present invention is fixedly connected to the potentiometer mounting plate 12 by screws. The potentiometer mounting plate 12 has three arc-shaped slide grooves 16 for adjusting the mounting angle of the potentiometer 13. The potentiometer mounting plate 12 is mounted below the scale panel 3 by passing through the arc-shaped slide grooves 16 with three sets of screws. When the mounting angle of the potentiometer 13 needs to be adjusted, the screws connecting the potentiometer mounting plate 12 and the scale panel 3 are loosened, and the mounting angle of the potentiometer 13 can be adjusted by rotating the potentiometer mounting plate 12.

[0044] See also Figure 6 The scale panel of the present invention is evenly distributed with three damping push rod through holes 17 and three switch touch push rod through holes 18. A circular indicating disk stop boss 19 and a potentiometer shaft hole 20 are provided at the center of the scale panel.

[0045] See also Figure 3 , Figure 6 When the indicator disk 5 is pressed, the indicator disk stop boss 19 at the center of the scale panel 3 ensures that there is a certain gap between the indicator disk 5 and the upper surface of the scale panel 3, preventing the indicator disk 5 from contacting the upper surface of the scale panel 3, thereby avoiding friction between the indicator disk 5 and the upper surface of the scale panel 3 when rotating.

[0046] See also Figure 7 The scale panel 3 of the present invention has short scale lines at intervals of 2 degrees and long scale lines at intervals of 10 degrees. Scale values ​​are marked near the long scale lines, which are 0, 10, 20, 30 to 360. An indicating arrow 21 is marked on the indicating disk 5, and the scale value of the scale panel 3 pointed by the indicating arrow 21 is the heading value.

[0047] See also Figure 8 The switch damping device of the present invention comprises a first fixing plate 4, a second fixing plate 24, and a third fixing plate 25. Three damping components 22 and three switch touch components 23 are evenly installed between the first fixing plate 4 and the second fixing plate 24. Three micro switches 26 corresponding to the switch touch components 23, three connecting columns 27 for connecting the second fixing plate 24, and a circuit board 28 are installed on the third fixing plate 25.

[0048] See also Fig. 9 The first fixing plate of the present invention is evenly distributed with three damping component top rod through holes 29 and three switch touch component top rod through holes 30.

[0049] See also Fig.10 The second fixing plate of the present invention is evenly distributed with three damping component adjustment through holes 31 and three switch touch component bottom rod through holes 32.

[0050] See also Fig.11 The damping assembly of the present invention comprises a damping push rod 6, a damping adjustment spring 33, an adjustment bolt 34 and a damping assembly housing 35. The damping assembly housing 35 is installed between the first fixed plate 4 and the second fixed plate 24 by screws. The damping push rod 6 passes through the damping assembly push rod through hole of the first fixed plate 4 and the damping push rod through hole of the scale panel 3 and contacts with the lower surface of the indicator disk 5, providing friction for the rotation of the indicator disk 5. The adjustment bolt 34 is connected to the damping assembly housing 35 by a thread. The adjustment bolt 34 is rotated through the damping assembly adjustment through hole 31 of the second fixed plate 24, so that the adjustment bolt 34 moves axially, thereby changing the compression state of the damping adjustment spring 33, adjusting the pressure of the damping adjustment spring 33 on the damping push rod 6 and the pressure of the damping push rod 6 on the lower surface of the indicator disk 5, so as to adjust the friction for the rotation of the indicator disk 5.

[0051] See also Fig.12The switch touch assembly of the present invention comprises a switch touch top rod 7, a buffer spring 36, a limit spring 37, a switch touch bottom rod 38 and a switch touch assembly housing 39. The switch touch assembly housing 39 is installed between the first fixed plate 4 and the second fixed plate 24 by screws. The switch touch top rod 7 passes through the switch touch assembly top rod through hole of the first fixed plate 4 and the switch touch top rod through hole of the scale panel 3 and corresponds to the lower surface of the indicator plate 5. The switch touch bottom rod 38 passes through the switch touch assembly bottom rod through hole of the second fixed plate 24 and corresponds to the touch head 40 of the micro switch 26 on the third fixed plate 25. A limit spring 38 is installed between the switch touch bottom rod 38 and the second fixed plate 24 to prevent the switch touch bottom rod 38 from moving downward. A buffer spring 36 is installed between the switch touch top rod 7 and the switch touch bottom rod 38. When the indicator disk 5 is pressed downward, the switch touch top rod 7, the buffer spring 36, the switch touch bottom rod 38 and the touch head 40 of the micro switch 26 are pushed in sequence to close the micro switch 26. When the indicator disk 5 is pressed and vibrates during rotation, the buffer spring 36 is squeezed by the switch touch top rod 7 to prevent the switch touch bottom rod 38 from jumping and the micro switch 26 from opening. When the indicator disk 5 is not pressed, the limit spring 37 pushes the switch touch bottom rod 38 upward to prevent the switch touch bottom rod 38 from contacting the touch head 40 of the micro switch 26 and prevent the micro switch 26 from closing.

[0052] See also Fig.11 , Fig.12 When the indicator disk 5 is not pressed, the three damping push rods 6 push the indicator disk 5 to move upward in the axial direction, so that there is a certain gap between the lower surface of the indicator disk 5 and the switch touch push rod 7, thereby avoiding the micro switch 26 from being triggered to close when the indicator disk 5 is not pressed.

[0053] See also Fig.13 The circuit board of the present invention includes a single-chip microcomputer 41 of model C8051F404 and a compensation potentiometer 42 for zero position compensation. Three micro switches 26 are respectively connected to the IO1, IO2, and IO3 ports of the single-chip microcomputer 41. The potentiometer 13 and the compensation potentiometer 42 are respectively connected to the AD1 and AD2 ports of the single-chip microcomputer 41. When the micro switch 26 is closed, the levels of the IO1, IO2, and IO3 ports of the single-chip microcomputer 41 become high levels. When at least one of the IO1, IO2, and IO3 of the single-chip microcomputer 41 becomes high levels, the single-chip microcomputer 41 collects data of the potentiometer 13 and the compensation potentiometer 42 from AD1 and AD2 respectively.

[0054] The AD1 and AD2 ports of the single-chip microcomputer 41 are analog signal to digital signal interfaces. The converted value is 12-bit binary. The data range of the acquisition potentiometer 13 and the compensation potentiometer 42 of the AD1 and AD2 ports is: 0 to 2 12, i.e. 0 to 4096, corresponding to the angle values ​​of 0 to 360 degrees of the potentiometer 13 and the compensation potentiometer 42. Therefore, the conversion coefficient of the output data of the potentiometer 13 and the compensation potentiometer 42 converted into the angle value is: k = 360 / 4096.

[0055] See also Fig.13 , Fig.14 , the single chip computer 41 adds the potentiometer data a collected by AD1 to the potentiometer 13 and the compensation potentiometer data b collected by AD2 to the compensation potentiometer 42 to obtain the accumulated value c, and then multiplies the accumulated value c by the conversion coefficient k to obtain the accumulated angle value d. When the accumulated angle value d is less than 360 degrees, the accumulated angle value is the heading value. If the accumulated angle value d is greater than 360 degrees, the accumulated angle value minus 360 degrees is the heading value, and finally the heading value is output through the serial port.

[0056] See also Figure 7 , Fig.13 When the heading value pointed to by the indicating arrow 21 of the indicating disk 5 is different from the value output by the single chip computer 41, the heading value output by the single chip computer 41 is changed by adjusting the compensation potentiometer 42 to reach the same heading value as the heading value pointed to by the indicating arrow 21. When the heading value output by the single chip computer 41 is the same as the heading value pointed to by the indicating arrow 21, the rotation angle of the compensation potentiometer 42 is fixed, and when in use, there is no need to adjust the angle of the compensation potentiometer 42 again.

[0057] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and intent of the present invention.

Claims

1. A heading control panel for an unmanned aerial vehicle, characterized in that: It includes a handle assembly and a switch damping device, which are coaxially arranged; The handle assembly comprises a scale panel, an indicating disk, a disk cap, a limit plate, a bushing, a fixing pin, a potentiometer mounting disk and a potentiometer; the potentiometer is fixed on the potentiometer mounting disk, and its potentiometer shaft passes through the central through hole of the potentiometer mounting disk, the scale panel and the bushing in sequence, and the potentiometer shaft and the bushing are fixed by a fixing pin passing through radially; the indicating disk is a circular plate structure, a cylindrical boss is arranged at the center of its upper end surface, the outer peripheral surface of the cylindrical boss is provided with a thread, and a kidney-shaped through hole is arranged at the center axis; the cross-sectional shape of the bushing is kidney-shaped, and it is coaxially sleeved in the kidney-shaped through hole of the indicating disk, and it is a clearance fit, and the axial length of the bushing is greater than the axial length of the kidney-shaped through hole of the indicating disk; a limit plate is installed on the upper end of the bushing to prevent the indicating disk from detaching from the upper end of the bushing; the central hole of the disk cap is provided with an internal thread, which is installed in cooperation with the external thread of the indicating disk, and the indicating disk and the potentiometer shaft can be rotated synchronously by rotating the disk cap; The switch damping device comprises a first fixing plate, a second fixing plate, a third fixing plate, a damping assembly, a switch touch assembly, a micro switch, a connecting column and a circuit board; the first fixing plate, the second fixing plate and the third fixing plate are parallel to each other and coaxially arranged, wherein a round through hole is opened at the center of the first fixing plate and the second fixing plate for placing the potentiometer; a plurality of damping assemblies and a plurality of switch touch assemblies are uniformly distributed between the first fixing plate and the second fixing plate along the circumferential direction, and the damping assemblies and the switch touch assemblies are alternately arranged, and their central axes are parallel to the central axis of the first fixing plate; the second fixing plate and the third fixing plate are fixedly connected by a connecting column arranged along the circumferential direction; a plurality of micro switches are uniformly distributed on the end surface of the third fixing plate along the circumferential direction, and are arranged one by one corresponding to the switch touch assemblies; the circuit board is fixed to the third fixing plate; The damping assembly comprises a damping push rod, a damping adjustment spring, an adjustment bolt and a damping assembly housing; the damping assembly housing is a circular tube structure, and its two ends are respectively fixed to the first fixing plate and the second fixing plate; the damping push rod, the damping adjustment spring and the adjustment bolt are coaxially installed in the damping assembly housing in sequence, and one end of the damping push rod passes through the first fixing plate and the scale panel in sequence to contact the lower surface of the indicator disk, so as to provide friction for the rotation of the indicator disk; the other end of the damping push rod is provided with a protrusion along the circumferential direction, which cooperates with the first fixing plate to limit the position; the adjustment bolt is threadedly matched with the inner circumferential surface of the lower end of the damping assembly housing, and its axial position is changed by rotating the adjustment bolt, thereby changing the compression state of the damping adjustment spring, thereby adjusting the pressure of the damping adjustment spring on the damping push rod, and the pressure of the damping push rod on the lower surface of the indicator disk; The switch touch assembly comprises a switch touch top rod, a buffer spring, a limit spring, a switch touch bottom rod and a switch touch assembly housing; the switch touch top rod and the switch touch bottom rod are both coaxially provided with a circular plate at one end thereof; the switch touch assembly housing is a circular tube structure, and its two ends are respectively fixed to the first fixing plate and the second fixing plate; the switch touch top rod, the buffer spring, the switch touch bottom rod and the limit spring are coaxially installed in the switch touch assembly housing in sequence; the switch touch top rod passes through the first fixing plate and the scale panel in sequence, and corresponds to the lower surface of the indicator disk, when the indicator disk is pressed downward, the switch touch top rod is squeezed by the lower surface of the indicator disk, and when the indicator disk is not pressed downward, there is a gap between the switch touch top rod and the lower surface of the indicator disk; one end of the circular plate of the switch touch top rod cooperates with the first fixing plate for limiting; the switch touch bottom rod passes through the second fixing plate and is opposite to the touch head of the micro switch; The buffer spring is located between the switch touching top rod and the circular plate of the switch touching bottom rod, and the limit spring is sleeved on the switch touching bottom rod and located between the circular plate of the switch touching bottom rod and the second fixed plate; The first fixing plate is coaxially fixed with the scale panel; When the disk cap is rotated or pressed, the indicator disk moves axially, pushing the switch touch top rod and the switch touch bottom rod of the switch touch assembly to axially displace, thereby closing the micro switch; The number of the damping components, switch touch components and micro switches is 3 each; The end surface of the potentiometer mounting plate is provided with three arc-shaped sliding grooves along the circumferential direction for adjusting the mounting angle of the potentiometer; the potentiometer mounting plate is mounted below the scale panel by three sets of screws passing through the three arc-shaped sliding grooves respectively; when the mounting angle of the potentiometer needs to be adjusted, the connecting screws between the potentiometer mounting plate and the scale panel are loosened, and the potentiometer mounting plate is rotated to adjust the mounting angle of the potentiometer; The scale panel is evenly distributed with three damping push rod through holes and three switch touch push rod through holes; a circular indicator disk stop boss is arranged at the center of its upper end surface. When the indicator disk is pressed, a certain gap is ensured between the indicator disk and the upper surface of the scale panel to prevent the indicator disk from contacting the upper surface of the scale panel, thereby avoiding friction between the indicator disk and the upper surface of the scale panel when the indicator disk is rotated.

2. The heading control panel of the UAV according to claim 1, characterized in that: A potentiometer shaft hole is also provided at the center of the scale panel.

3. The heading control panel of the UAV according to claim 1, characterized in that: The scale panel has short scale lines at intervals of 2 degrees, long scale lines at intervals of 10 degrees, and scale values ​​are marked near the long scale lines, which are 0, 10, 20, 30 to 360 respectively; an indicator arrow is marked on the indicator disk, and the scale value of the scale panel pointed to by the indicator arrow is the heading value.

4. The heading control panel of the UAV according to claim 1, characterized in that: The height of the kidney-shaped hole in the center of the indicator disc is 15 mm, the height of the shaft sleeve with a kidney-shaped cross-section is 20 mm, and the indicator disc is installed on the shaft sleeve and can slide 5 mm relative to the shaft sleeve along the axial direction.

5. The heading control panel of the UAV according to claim 1, characterized in that: The circuit board includes a single-chip microcomputer and a compensation potentiometer for zero position compensation, and the single-chip microcomputer is respectively connected to three micro switches, a potentiometer, and a compensation potentiometer; when one of the micro switches is closed, the single-chip microcomputer collects data from the potentiometer and the compensation potentiometer, adds the potentiometer data and the compensation potentiometer data, and converts them into a heading value and outputs them through its serial port. The compensation potentiometer calibrates the heading value output by the single-chip microcomputer.

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