CN217132455U - Unmanned aerial vehicle focus measures auxiliary device - Google Patents
Unmanned aerial vehicle focus measures auxiliary device Download PDFInfo
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- CN217132455U CN217132455U CN202220551667.0U CN202220551667U CN217132455U CN 217132455 U CN217132455 U CN 217132455U CN 202220551667 U CN202220551667 U CN 202220551667U CN 217132455 U CN217132455 U CN 217132455U
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Abstract
The utility model relates to the technical field of unmanned aerial vehicle gravity center measurement, in particular to an unmanned aerial vehicle gravity center measurement auxiliary device, which comprises a first measurement part, a second measurement part and a reference part provided with a reference surface; the datum plane is arranged along the YZ plane and is fixed relative to the position of the first measuring part; the first measuring part comprises a first sensor and two first supporting legs fixed on the first sensor; the second measuring part comprises a second sensor and two second supporting legs fixed on the second supporting legs; the first sensor and the second sensor are arranged along the X axis; the two first supporting legs and the two second supporting legs are symmetrically arranged about a vertical plane passing through the X axis; and a distance in the X-axis direction exists between the first supporting leg and the second supporting leg. The utility model discloses can know the distance of the YZ plane at unmanned aerial vehicle's focus place to the unmanned aerial vehicle aircraft nose to can roughly confirm unmanned aerial vehicle's focus scope, be convenient for follow-up manual definite unmanned aerial vehicle's focus.
Description
Technical Field
The utility model relates to an unmanned aerial vehicle focus measures technical field, in particular to unmanned aerial vehicle focus measures auxiliary device.
Background
In unmanned aerial vehicle production and test flight process, the focus position is crucial to unmanned aerial vehicle flight. At present, the existing means for measuring the gravity center of the unmanned aerial vehicle is to try to change the supporting point of the unmanned aerial vehicle for many times until the pitching axis of the unmanned aerial vehicle reaches a balanced state, so that the unmanned aerial vehicle can be placed on one supporting point in the balanced state. This kind of scheme need remove the strong point many times and find the balance point, wastes time and energy, and great strong point contact area can influence focus measurement accuracy, and the contact point is less damages the unmanned aerial vehicle fuselage easily.
In this case, because unmanned aerial vehicle is bulky, weight is heavy. Use traditional measurement mode to need many people to cooperate to lift unmanned aerial vehicle and try earlier to find the current focus of unmanned aerial vehicle after, carry out the counter weight after calculating and standard focus difference, and then repeat above-mentioned work again until joining in marriage standard focus. Although there is a method for automatically determining the center of gravity of an unmanned aerial vehicle through calculation at present, a method for manually measuring and determining the center of gravity of an unmanned aerial vehicle is still more common as a reliable method.
In summary, the prior art has at least the following technical problems,
when the method for manually measuring and determining the gravity center of the unmanned aerial vehicle is used, the gravity center of the unmanned aerial vehicle is not known in a rough range, and the gravity center position of the unmanned aerial vehicle can be completely determined by trying for a large number of times.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve or alleviate above-mentioned technical problem.
The utility model adopts the means that the unmanned aerial vehicle gravity center measurement auxiliary device comprises a first measurement part, a second measurement part and a reference piece provided with a reference surface arranged along a YZ plane; the position of the reference surface relative to the first measuring part is fixed; the first measuring part comprises a first sensor and two first supporting legs fixed on the first sensor; the second measuring part comprises a second sensor and two second supporting legs fixed on the second supporting legs; the first sensor and the second sensor are arranged along the X axis; the two first supporting legs and the two second supporting legs are symmetrically arranged about a vertical plane passing through the X axis; and a distance in the X-axis direction exists between the first supporting leg and the second supporting leg.
The utility model discloses the effect that reaches does, can know the YZ plane at unmanned aerial vehicle's focus place to the distance of unmanned aerial vehicle aircraft nose to can roughly confirm unmanned aerial vehicle's centrobaric scope, be convenient for follow-up manual definite unmanned aerial vehicle's focus.
According to a further technical scheme, the first supporting leg and the second supporting leg are both in a cone shape or a cone shape.
The technical scheme is further that the sensor comprises a base, wherein a mounting frame is fixedly arranged on the base, one end of each of a first sensor and a second sensor is fixed on the top end face of the mounting frame, and the other end of each of the first sensor and the second sensor is arranged back to back.
Can reduce unmanned aerial vehicle focus and measure the ascending length of auxiliary device in X axle direction, relatively save space.
According to a further technical scheme, a level gauge is arranged on the base.
According to the technical scheme, the base is provided with two gradienters, and an included angle exists between the two gradienters.
According to a further technical scheme, the bottom end face of the base is in threaded connection with at least three supporting legs.
The rotation of the supporting feet can ensure that the base is horizontal, thereby ensuring the measurement accuracy.
According to the further technical scheme, scales in the X-axis direction are arranged on the base, and the scales are scales with the reference surface as zero.
The position of the YZ plane where the gravity center of the unmanned aerial vehicle is located can be conveniently determined through the scales.
According to a further technical scheme, the whole reference piece is L-shaped and is fixedly connected with the first measuring part.
To sum up, the utility model discloses can reach following technological effect, can know the distance of the YZ plane of the focus place of unmanned aerial vehicle to the unmanned aerial vehicle aircraft nose to can roughly confirm the scope of the focus of unmanned aerial vehicle, be convenient for follow-up manual definite unmanned aerial vehicle's focus; the length of the unmanned aerial vehicle gravity center measurement auxiliary device in the X-axis direction can be reduced, and the space is saved; the rotation of the supporting feet can ensure that the base is horizontal, thereby ensuring the measurement accuracy.
Drawings
Fig. 1 is a schematic perspective view of an unmanned aerial vehicle gravity center measurement assistance device according to an embodiment of the present invention; direction one DIR1 represents the X-axis direction; direction two, DIR2Y axial direction; the direction three DIR3Z axis direction; PLANE one PLANE1 represents in the XY PLANE through which both the center PLANE of first sensor 11 and the center PLANE of second sensor 21 pass.
Fig. 2 is a schematic diagram of an unmanned aerial vehicle gravity center measurement assistance device according to an embodiment of the present invention, viewed from the side when in use; LINE one LINE1 represents the YZ plane in which the center of gravity of the drone 9 lies.
PLANE one PLANE 1; LINE one LINE 1; a direction one DIR 1; direction two DIR 2; direction three DIR 3; a first measuring unit 1; a first sensor 11; a first supporting leg 12; a second measuring unit 2; a second sensor 21; a second support foot 22; a reference member 3; a reference surface 31; a base 8; a mounting frame 81; and an unmanned aerial vehicle 9.
Detailed Description
The following description will be made in conjunction with the accompanying drawings.
As a specific embodiment, the utility model discloses an unmanned aerial vehicle gravity center measurement auxiliary device of embodiment, it includes first measuring part 1, second measuring part 2 and is provided with reference member 3 along the reference plane 31 of YZ plane setting; the reference surface 31 is fixed in position with respect to the first measurement unit 1.
For example, the reference member 3 is L-shaped as a whole and is fixedly connected to the first measuring portion 1, so that the position of the reference surface 31 with respect to the first measuring portion 1 is fixed.
The first measurement unit 1 includes a first sensor 11 and two first support legs 12 fixed to the first sensor 11; the second measuring part 2 comprises a second sensor 21 and two second support feet 22 fixed to the second support feet 22. The first sensor 11 and the second sensor 21 are conventional devices for detecting gravity, such as QLDE-AG single-point weighing sensors of shenzhen, qinjian, heyday technologies, ltd.
The first sensor 11 and the second sensor 21 are both arranged along the X axis.
The two first support feet 12, the two second support feet 22 are each arranged symmetrically about a vertical plane passing through the X axis; and a distance in the X-axis direction exists between the first support leg 12 and the second support leg 22 (center distance).
The working principle is as follows: as shown in fig. 2, before the use, place unmanned aerial vehicle 9 on unmanned aerial vehicle focus measures auxiliary device for unmanned aerial vehicle 9's aircraft nose and reference surface 31 laminate, unmanned aerial vehicle 9's fuselage (the attached drawing does not mark) and two first supporting legs 12, two second supporting legs 22 all contact.
For convenience of explanation, the following definitions are made for each parameter:
the weight of the unmanned aerial vehicle 9 is Wt;
the first sensor 11 reads Wf;
the second sensor 21 reads Wr;
the distance between the reference surface 31 and the first supporting leg 12 is Gr, which is a predetermined value and is known;
the distance between the first support leg 12 and the second support leg 22 is Gb, which is a predetermined value and is known;
as shown in fig. 2, the distance between the YZ plane where the center of gravity of the unmanned aerial vehicle 9 is located and the first supporting leg 12 is Gf;
the distance between the YZ plane where the gravity center of the unmanned aerial vehicle 9 is located and the reference plane 31 is CG.
It is readily understood that CG is the value that is required for the measurement.
The method of CG acquisition is as follows:
reading the reading of the first sensor 11 and the reading of the second sensor 21 to obtain Wf and Wr;
obtaining Wt according to Wf and Wr, wherein the Wt is equal to Wf + Wr;
obtaining Gf according to calculation, wherein Gf is (Wf/(Wf + Wr)) Gb;
and obtaining CG, specifically Gf + Gr, according to the calculation.
Can see from the aforesaid, can know the distance of the YZ plane at unmanned aerial vehicle 9's focus place to unmanned aerial vehicle 9 aircraft nose to can roughly confirm the centrobaric scope of unmanned aerial vehicle 9, be convenient for follow-up manual focus of confirming unmanned aerial vehicle 9. One of the common ways is to make a circle of marks on the YZ plane where the center of gravity of the unmanned aerial vehicle 9 is located by an oil pen or the like so as to record the position of the YZ plane where the center of gravity of the unmanned aerial vehicle 9 is located.
In one specific embodiment, the first and second support legs 12, 22 are both truncated cone-shaped or conical.
As a specific implementation mode, the utility model discloses an unmanned aerial vehicle gravity center measurement auxiliary device of embodiment still includes base 8, and base 8 is fixed and is provided with mounting bracket 81, and first sensor 11, second sensor 21 uniform end are fixed at the top terminal surface of mounting bracket 81, and the other end of first sensor 11, the other end of second sensor 21 set up dorsad. Can reduce unmanned aerial vehicle focus and measure the ascending length of auxiliary device in X axle direction, relatively save space.
In one embodiment, a level is disposed on the base 8. The base 8 is provided with two spirit levels with an angle between them, which may be ninety degrees.
In one embodiment, at least three support legs (not shown) are screwed to the bottom end surface of the base 8. The level is a conventional level. According to the principle that three points determine a plane, the rotation of the supporting feet can ensure that the base 8 is horizontal (i.e. parallel to the XZ plane), thereby ensuring the measurement accuracy.
In a specific embodiment, the base 8 is provided with a scale in the X-axis direction, and the scale is set to zero with respect to the reference surface 31. The position of the YZ plane where the center of gravity of the unmanned aerial vehicle 9 is located can be conveniently determined through the scales.
As used in the present invention, the term: first, second, etc. do not denote any order, quantity, or importance, but rather are used to distinguish one element from another.
As used in the present invention, the term: one, etc. do not denote a limitation of quantity, but rather denote the presence of at least one of the referenced item.
As in the present invention, the term indicating orientation or position is used: top, bottom, side, longitudinal, lateral, middle, center, outer, inner, horizontal, vertical, left, right, above, below, and the like are intended to reflect relative positions, not absolute positions.
The term as used in the present invention: approximate, whole, approximate, close, etc., are words of definition that specify the presence of stated features but allow for certain deviations. The amount of tolerance for a certain deviation may vary depending on the particular context; for example, the specific context in which the deviation from the dimensions may depend includes, but is not limited to, national standards for dimensional tolerances.
Claims (8)
1. The unmanned aerial vehicle gravity center measurement auxiliary device comprises a first measurement part, a second measurement part and a reference piece provided with a reference surface; the datum plane is arranged along the YZ plane and is fixed relative to the position of the first measuring part; it is characterized in that the utility model is characterized in that,
the first measuring part comprises a first sensor and two first supporting legs fixed on the first sensor; the second measuring part comprises a second sensor and two second supporting legs fixed on the second supporting legs; the first sensor and the second sensor are arranged along the X axis; the two first supporting legs and the two second supporting legs are symmetrically arranged about a vertical plane passing through the X axis; and a distance in the X-axis direction exists between the first supporting leg and the second supporting leg.
2. The unmanned aerial vehicle gravity center measurement auxiliary device of claim 1, wherein the first supporting leg and the second supporting leg are both in a truncated cone shape or a conical shape.
3. The unmanned aerial vehicle gravity center measurement auxiliary device of claim 1, further comprising a base, wherein the base is fixedly provided with a mounting frame, one end of each of the first sensor and the second sensor is fixed on the top end surface of the mounting frame, and the other end of each of the first sensor and the second sensor is arranged in a back-to-back manner.
4. The unmanned aerial vehicle gravity center measurement auxiliary device of claim 3, wherein a level is arranged on the base.
5. The unmanned aerial vehicle gravity center measurement auxiliary device of claim 4, wherein the base is provided with two levels, and an included angle exists between the two levels.
6. The unmanned aerial vehicle gravity center measurement auxiliary device of claim 5, wherein the bottom end face of the base is in threaded connection with at least three supporting feet.
7. The unmanned aerial vehicle gravity center measurement auxiliary device of claim 6, wherein the base is provided with a scale along the X-axis direction, and the scale is zero with respect to a reference surface.
8. The unmanned aerial vehicle gravity center measurement auxiliary device according to claim 1, wherein the reference member is L-shaped as a whole and is fixedly connected to the first measurement portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220551667.0U CN217132455U (en) | 2022-03-11 | 2022-03-11 | Unmanned aerial vehicle focus measures auxiliary device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220551667.0U CN217132455U (en) | 2022-03-11 | 2022-03-11 | Unmanned aerial vehicle focus measures auxiliary device |
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| Publication Number | Publication Date |
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| CN217132455U true CN217132455U (en) | 2022-08-05 |
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| CN202220551667.0U Active CN217132455U (en) | 2022-03-11 | 2022-03-11 | Unmanned aerial vehicle focus measures auxiliary device |
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