CN215340323U - Rotary radar and plant protection equipment - Google Patents
Rotary radar and plant protection equipment Download PDFInfo
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- CN215340323U CN215340323U CN202121211071.8U CN202121211071U CN215340323U CN 215340323 U CN215340323 U CN 215340323U CN 202121211071 U CN202121211071 U CN 202121211071U CN 215340323 U CN215340323 U CN 215340323U
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Abstract
The utility model relates to the technical field of radars, and particularly discloses a rotary radar and plant protection equipment. The rotary radar comprises a fixing plate, a rotary plate, a photoelectric encoder, a wireless communication assembly and a wireless power supply assembly, wherein the wireless power supply assembly comprises a transmitting coil and a receiving coil, the photoelectric encoder comprises a code disc and a receiver, the wireless communication assembly comprises a transmitting antenna and a receiving antenna, the rotary plate is provided with a first side face, the first side face comprises a central area, a first annular area and a second annular area, the transmitting antenna is arranged in the central area, the receiving antenna is arranged on the fixing plate and is right opposite to the transmitting antenna, the receiving coil is arranged in the first annular area, and one of the code disc and the receiver is arranged in the second annular area. The transmitting antenna is arranged in the central area of the rotating plate, so that the transmitting antenna and the receiving antenna can be ensured to be always arranged just right, and further the communication speed of the wireless communication assembly is ensured. The coded disc or the transceiver is positioned in the second annular area, so that the detection precision of the photoelectric encoder is improved.
Description
Technical Field
The utility model relates to the technical field of radars, in particular to a rotary radar and plant protection equipment.
Background
Along with the development of unmanned aerial vehicle technique, unmanned aerial vehicle wide application is in plant protection work, and in plant protection work, unmanned aerial vehicle keeps away the barrier through rotatory radar range finding to realize unmanned aerial vehicle's autonomic flight. Rotatory radar includes motor, obstacle detection portion, wireless communication subassembly, rotor plate, fixed plate and wireless power supply subassembly, and wherein the motor active cell passes the rotor plate and drives the rotor plate and rotate, thereby the rotor plate drives the rotation of obstacle detection portion, and obstacle detection portion is used for detecting the position of the peripheral obstacle of unmanned aerial vehicle. The wireless communication assembly comprises a transmitting antenna connected to the rotating plate and a receiving antenna connected to the fixed plate. The barrier detection part transmits the detected data to the transmitting antenna, and the transmitting antenna transmits the data to the receiving antenna in a wireless transmission mode. The wireless power supply assembly comprises a transmitting coil and a receiving coil, the transmitting coil is arranged on the fixing plate, the receiving coil is arranged on the rotating plate, an external power supply supplies power for the transmitting coil, and the receiving coil generates current under the action of electromagnetic effect, so that power is supplied to power consumption parts such as a transmitting antenna and an obstacle detection part.
In order to detect the rotating speed of the motor rotating shaft, the rotary radar further comprises a photoelectric encoder, the photoelectric encoder comprises a code wheel and a transceiver, the transceiver is arranged on the fixed plate, the code wheel is arranged on the rotary plate, the rotary plate drives the code wheel to rotate, and the transceiver can detect the rotating speed of the code wheel.
In the prior art, the positions of the photoelectric encoder, the receiving coil and the transmitting antenna are unreasonable, so that the rotating speed error detected by the transceiver is large, the optimal arrangement position of the transmitting antenna is occupied, the communication speed of the wireless communication assembly is reduced, and the effective communication speed cannot be reached.
Therefore, there is a need for a rotary radar and plant protection device to properly arrange the positions of the photoelectric encoder, the receiving coil and the transmitting antenna.
SUMMERY OF THE UTILITY MODEL
An object of the present invention is to provide a rotary radar to rationally arrange the positions of a photoelectric encoder, a receiving coil and a transmitting antenna.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a rotary radar comprises a fixed plate, a rotating plate, a photoelectric encoder, a wireless communication assembly and a wireless power supply assembly, wherein the wireless power supply assembly comprises a transmitting coil arranged on the fixed plate and a receiving coil arranged on the rotating plate, the transmitting coil is opposite to the receiving coil, the photoelectric encoder comprises a code disc and a transceiver, one of the code disc and the transceiver is arranged on the rotating plate, the other one of the code disc and the transceiver is arranged on the fixed plate, the transceiver is opposite to the code disc, and the wireless communication assembly comprises a transmitting antenna and a receiving antenna;
the rotating plate is provided with a first side face close to the fixed plate, the first side face comprises a central area, a first annular area arranged outside the central area and a second annular area arranged outside the first annular area, the transmitting antenna is arranged in the central area, the receiving antenna is arranged on the fixed plate and is right opposite to the transmitting antenna, the receiving coil is arranged in the first annular area, and the code disc and the transceiver are arranged in the second annular area.
Preferably, the rotary radar further comprises a connecting frame and a rotary driving member, and the first side face further comprises a third annular area located outside the second annular area and connected with the rotary driving member through the connecting frame.
Preferably, the third annular area is connected with the connecting frame through a connecting piece, the third annular area is provided with a connecting hole, and the connecting piece penetrates through the connecting hole to be connected with the connecting frame.
Preferably, the number of the connecting holes and the number of the connecting pieces are at least two, and the at least two connecting holes are uniformly arranged along the circumferential direction of the third annular area.
Preferably, the connection hole includes a first hole and a second hole forming a stepped hole, the diameter of the first hole is larger than that of the second hole, the first hole is disposed near the fixing plate, the connection member is a screw, and a nut of the screw is at least partially accommodated in the first hole.
Preferably, a first magnetism isolating sheet is arranged between the receiving coil and the rotating plate, the first magnetism isolating sheet is of an annular structure, and the central area is located inside the annular structure; and/or the presence of a gas in the gas,
and a second magnetism isolating sheet is arranged between the transmitting coil and the fixing plate and is of an annular structure.
Preferably, the sum of the thicknesses of the receiving coil and the first magnetism-isolating sheet is B1, and B1 is more than or equal to 1mm and less than or equal to 2 mm; and/or the presence of a gas in the gas,
the sum of the thicknesses of the transmitting coil and the second magnetism isolating sheet is B2, and B2 is more than or equal to 1mm and less than or equal to 2 mm.
Preferably, the distance between the receiving coil and the transmitting coil is not more than 3 mm.
Preferably, the first magnetism isolating sheet is bonded with the rotating plate; and/or the presence of a gas in the gas,
the second magnetism isolating sheet is bonded with the fixing plate.
Another object of the utility model is to provide a plant protection device to make the structure of the rotating radar reasonable.
In order to achieve the purpose, the utility model adopts the following technical scheme:
plant protection equipment comprises the rotary radar.
The utility model has the beneficial effects that:
the transmitting antenna is arranged in the center area of the rotating plate, the receiving antenna is located in the center of the fixing plate, and the transmitting antenna cannot be eccentric in the rotating process of the rotating plate, so that the transmitting antenna and the receiving antenna can be guaranteed to be always arranged right opposite to each other, and further the communication speed of the wireless communication assembly is guaranteed. The code disc or the transceiver is positioned in the second annular area, namely the outer sides of the transmitting antenna and the receiving coil, so that the diameter of the code disc is increased, and the detection precision of the photoelectric encoder is improved.
Drawings
FIG. 1 is a schematic structural diagram of a rotary radar provided in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a rotating plate according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a rotating plate, a receiving coil and a code wheel provided by an embodiment of the utility model;
fig. 4 is a schematic structural diagram of a fixing plate, a transmitting coil and a transceiver provided by the embodiment of the utility model.
Fig. 5 is a schematic structural diagram of a first magnetism isolating sheet according to an embodiment of the present invention.
In the figure:
1. a fixing plate;
2. a rotating plate; 21. a central region; 22. a first annular region; 23. a second annular region; 24. a third annular region; 25. connecting holes;
3. a transmitting coil; 4. a receiving coil; 5. a connecting frame; 6. a transmitting antenna; 7. a first magnetism isolating sheet; 9. A receiving antenna; 10. code disc; 20. a hair extension device; 30. an electric motor.
Detailed Description
The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.
In the present invention, the directional terms such as "upper", "lower", "left", "right", "inner" and "outer" are used for easy understanding without making a contrary explanation, and thus do not limit the scope of the present invention.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
This embodiment provides a plant protection equipment for plant protection equipment can be unmanned vehicles, unmanned vehicles etc.. The plant protection equipment comprises a rotary radar, and the rotary radar is used for detecting obstacles around the plant protection equipment. This embodiment uses plant protection equipment to explain as unmanned aerial vehicle for the example.
As shown in fig. 1, the present embodiment provides a rotary radar including a fixed plate 1, a rotating plate 2, and a photoelectric encoder. The photoelectric encoder comprises a code wheel 10 and a transceiver 20, wherein the transceiver 20 is arranged on a fixed plate 1, the code wheel 10 is arranged on a rotating plate 2, the transceiver 20 is opposite to the code wheel 10, the code wheel 10 and the transceiver 20 rotate relatively, and the transceiver 20 can detect the rotating speed of the code wheel 10.
For driving the rotation plate 2 to rotate, the rotation radar preferably further comprises a rotation driving member, which may be a motor 30 or a rotating shaft of the motor 30, and in this embodiment, the rotation driving member is preferably the motor 30. The rotating shaft of the rotating driving member is connected with the rotating plate 2 to drive the rotating plate 2 to rotate. Since the code wheel 10 is connected to the rotary plate 2, the rotary shaft of the motor 30, the rotary plate 2, and the code wheel 10 rotate synchronously, and the rotational speed of the code wheel 10 detected by the transceiver 20 is the rotational speed of the rotary shaft of the motor 30.
Rotatory radar still includes obstacle detection portion (not shown in the figure) and wireless communication subassembly, and obstacle detection portion is connected with motor 30's pivot, and obstacle detection portion is used for detecting the position of the peripheral obstacle of unmanned aerial vehicle. The wireless communication assembly includes a transmitting antenna 6 attached to the rotating plate 2 and a receiving antenna 9 attached to the fixed plate 1. The barrier detection portion transmits the detected data to the transmitting antenna 6, the transmitting antenna 6 transmits the data to the receiving antenna 9 in a wireless transmission mode, and the receiving antenna 9 finally transmits the data to the controller of the unmanned aerial vehicle.
The rotary radar further includes a wireless power supply component in order to supply power to electric components that rotate in synchronization with the rotation shaft of the motor 30, such as the transmitting antenna 6 and the obstacle detecting portion. The wireless power supply assembly comprises a transmitting coil 3 and a receiving coil 4, the transmitting coil 3 is arranged on the fixing plate 1, the receiving coil 4 is arranged on the rotating plate 2, the transmitting coil 3 is opposite to the receiving coil 4, an external power supply supplies power to the transmitting coil 3, and the receiving coil 4 generates current under the action of an electromagnetic effect. Preferably, to improve the wireless power supply efficiency, the transmitting coil 3 is opposite to the receiving coil 4.
As shown in fig. 1 to 3, in particular, the relative positions of the transmitting antenna 6, the code wheel 10 and the receiving coil 4 connected to the rotary plate 2 on the rotary plate 2 are as follows: the rotating plate 2 has a first side close to the fixed plate 1, the first side comprising a central area 21, a first annular area 22 arranged outside the central area 21 and a second annular area 23 arranged outside the first annular area 22, it being understood that the centres of the central area 21, the first annular area 22 and the second annular area 23 are all arranged concentrically with the centre of rotation of the rotating plate 2. The receiving coil 4 is arranged in a first annular area 22, and the code wheel 10 is arranged in a second annular area 23.
Since the transmitting coil 3 is opposite to the receiving coil 4, the transceiver 20 is opposite to the code wheel 10, and the receiving antenna 9 is opposite to the transmitting antenna 6, as shown in fig. 4, the fixing plate 1 is correspondingly divided into two annular areas, the two annular areas are respectively opposite to the first annular area 22 and the second annular area 23, the transmitting coil 3 is located in the inner annular area, the transceiver 20 is located in the outer annular area, and the receiving antenna 9 is located at the center of the fixing plate 1. It should be noted that, in other alternative embodiments, the code wheel 10 may be disposed on the fixing plate 1, and the transceiver 20 may be disposed on the second annular region 23 of the rotating plate 2.
In this embodiment, the transmitting antenna 6 is disposed in the central area 21 of the rotating plate 2, the receiving antenna 9 is disposed in the central position of the fixing plate 1, and the transmitting antenna 6 is not eccentric in the rotating process of the rotating plate 2, so that the transmitting antenna 6 and the receiving antenna 9 can be always arranged in a right-to-right manner, and the communication rate of the wireless communication assembly is further ensured. The code wheel 10 or the transceiver 20 is located in the second annular region 23, namely, outside the transmitting antenna 6 and the receiving coil 4, so that the diameter of the code wheel 10 is increased, and the detection accuracy of the photoelectric encoder is improved.
In order to connect the rotating plate 2 with the rotating shaft in the prior art, a through hole is usually formed in the rotating plate 2, and the rotating shaft is inserted into the through hole and connected with the rotating plate 2 through a screw. However, the through hole occupies the optimal position of the transmitting antenna 6, which causes the communication speed of the wireless communication assembly to be reduced and the effective communication speed cannot be reached; in addition, the receiving coil 4 is located outside the through hole, so that the metal screw connecting the rotating shaft and the rotating plate 2 can cause the receiving coil 4 to generate electromagnetic eddy current, thereby reducing the wireless power supply efficiency and increasing the heat productivity.
Therefore, in order to solve the above technical problem, as shown in fig. 1, 2 and 3, the rotary radar provided in this embodiment further includes a connecting frame 5, the first side face further includes a third annular region 24 located outside the second annular region 23, and the third annular region 24 is connected to the rotating shaft of the motor 30 through the connecting frame 5. Since the third annular region 24 is located outside the second annular region 23, i.e. the connection position of the connecting frame 5 and the rotating plate 2 is located outside the code wheel 10, the connection of the rotating plate 2 and the rotating shaft does not occupy the central region 21 of the rotating plate 2, thereby avoiding the transmitting antenna 6, and at the same time, the second annular region 23 is located between the third annular region 24 and the first annular region 22 where the receiving coil 4 is located, so that the connection of the rotating plate 2 and the connecting frame 5 does not cause the receiving coil 4 to generate electromagnetic eddy currents.
As shown in fig. 2, preferably, in order to facilitate the connection between the rotating plate 2 and the connecting frame 5, the third annular region 24 is connected to the connecting frame 5 by a connecting member, and the third annular region 24 is opened with a connecting hole 25, and the connecting member is connected to the connecting frame 5 through the connecting hole 25.
In order to effectively ensure the stability of the rotating plate 2 during rotation and prevent the rotating plate 2 from shaking during rotation, it is preferable that the number of the connecting holes 25 and the number of the connecting members are at least two, and the at least two connecting holes 25 are uniformly arranged along the circumferential direction of the third annular region 24. Further, the number of the connection holes 25 is three, and the three connection holes 25 are located at three vertexes of an equilateral triangle, respectively. It should be noted that, since the at least two connecting holes 25 are located in the third annular region 24, that is, the at least two connecting holes 25 are located at the edge of the rotating plate 2, the shaking of the rotating plate 2 can be further reduced.
Since the wireless power supply efficiency is high when the distance between the receiving coil 4 and the transmitting coil 3 is within the preset range, it is preferable that the distance H between the receiving coil 4 and the transmitting coil 3 is not more than 3mm, more specifically, the distance H between the receiving coil 4 and the transmitting coil 3 is 2 mm.
In order to reduce the size of the protruding first side surface of the connecting member, so as to reduce the distance between the rotating plate 2 and the fixing plate 1, and further control the distance between the receiving coil 4 and the transmitting coil 3 within a preset range, the connecting hole 25 provided in this embodiment includes a first hole and a second hole forming a stepped hole, the diameter of the first hole is larger than that of the second hole, and the first hole is disposed close to the fixing plate 1, the connecting member is a screw, and the nut of the screw is at least partially accommodated in the first hole, so that the size of the protruding first side surface of the nut is reduced.
In order to prevent the receiving coil 4 and the transmitting coil 3 from generating electromagnetic waves to penetrate through the transmitting coil 3 and the receiving coil 4, thereby reducing the wireless power supply efficiency, and prevent the electromagnetic waves from affecting other electronic components, a first magnetism isolating sheet 7 is arranged between the receiving coil 4 and the rotating plate 2, and a second magnetism isolating sheet is arranged between the transmitting coil 3 and the fixed plate 1. Specifically, the first magnetic shielding sheet 7 is bonded to the rotating plate 2, and the second magnetic shielding sheet is bonded to the fixed plate 1. Of course, in other alternative embodiments, only the first magnetism isolating piece 7 or the second magnetism isolating piece may be provided.
As shown in fig. 5, the first magnetism isolating sheet 7 and the second magnetism isolating sheet are both in an annular structure, the central area 21 is located inside the annular structure of the first magnetism isolating sheet 7, and the central position of the fixing plate 1 is located inside the annular structure of the second magnetism isolating sheet, so that the first magnetism isolating sheet 7 avoids the transmitting antenna 6, and the second magnetism isolating sheet avoids the receiving antenna 9.
In order to ensure the detection accuracy of the photoelectric encoder, the distance between the code wheel 10 and the transceiver 20 needs to be kept within an effective distance, so that the distance between the fixed plate 1 and the rotating plate 2 cannot be too large in order to take the detection accuracy of the photoelectric encoder into account. It can be understood that, in the present embodiment, the distance L between the fixed plate 1 and the rotating plate 2 is the sum of the distance H between the receiving coil 4 and the transmitting coil 3, the thickness of the receiving coil 4, the thickness of the first magnetism isolating sheet 7, and the thickness of the transmitting coil 3 and the second magnetism isolating sheet.
Therefore, in order to ensure the distance between the rotating plate 2 and the fixed plate 1, the sum of the thicknesses of the receiving coil 4 and the first magnetism-isolating sheet 7 is preferably B1, 1mm & lt, B1 & lt, 2mm, and the sum of the thicknesses of the transmitting coil 3 and the second magnetism-isolating sheet is preferably B2, 1mm & lt, B2 & lt, 2 mm. Since the distance H between the receiving coil 4 and the transmitting coil 3 is not more than 3mm, the spacing between the rotary plate 2 and the fixed plate 1 is not more than 5 mm.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A rotary radar comprises a fixing plate (1), a rotating plate (2), a photoelectric encoder, a wireless communication assembly and a wireless power supply assembly, wherein the wireless power supply assembly comprises a transmitting coil (3) arranged on the fixing plate (1) and a receiving coil (4) arranged on the rotating plate (2), the transmitting coil (3) is opposite to the receiving coil (4), the photoelectric encoder comprises a code disc (10) and a transceiver (20), one of the code disc (10) and the transceiver (20) is arranged on the rotating plate (2), the other one of the code disc (10) and the transceiver (20) is arranged on the fixing plate (1), the transceiver (20) and the code disc (10) are right opposite, and the wireless communication assembly comprises a transmitting antenna (6) and a receiving antenna (9); it is characterized in that the preparation method is characterized in that,
the rotating plate (2) is provided with a first side face close to the fixing plate (1), the first side face comprises a central area (21), a first annular area (22) arranged outside the central area (21) and a second annular area (23) arranged outside the first annular area (22), the transmitting antenna (6) is arranged in the central area (21), the receiving antenna (9) is arranged on the fixing plate (1) and is opposite to the transmitting antenna (6), the receiving coil (4) is arranged in the first annular area (22), and the one of the code disc (10) and the transceiver (20) is arranged in the second annular area (23).
2. The rotary radar according to claim 1, further comprising a link frame (5) and a rotary drive, the first side further comprising a third annular zone (24) located outside the second annular zone (23), the third annular zone (24) being connected with the rotary drive via the link frame (5).
3. The rotary radar according to claim 2, wherein the third annular region (24) is connected to the connecting frame (5) by a connecting element, and the third annular region (24) is provided with a connecting hole (25), and the connecting element passes through the connecting hole (25) and is connected to the connecting frame (5).
4. The rotary radar according to claim 3, characterized in that the number of the connection holes (25) and the number of the connection pieces are each at least two, at least two of the connection holes (25) being arranged uniformly in the circumferential direction of the third annular zone (24).
5. The rotary radar according to claim 3, wherein the connection hole (25) comprises a first hole and a second hole forming a stepped hole, the first hole having a diameter greater than the second hole and being arranged close to the fixed plate (1), the connection being a screw, the nut of the screw being at least partially received in the first hole.
6. The rotary radar according to any one of claims 1 to 5, characterized in that a first magnetically isolating piece (7) is arranged between the receiving coil (4) and the rotating plate (2), said first magnetically isolating piece (7) having an annular configuration, said central zone (21) being located inside said annular configuration; and/or the presence of a gas in the gas,
and a second magnetism isolating sheet is arranged between the transmitting coil (3) and the fixing plate (1), and the second magnetism isolating sheet is of an annular structure.
7. The rotary radar according to claim 6, characterized in that the sum of the thicknesses of the receiving coil (4) and the first magnetically isolating sheet (7) is B1, 1 mm. ltoreq. B1. ltoreq.2 mm; and/or the presence of a gas in the gas,
the sum of the thicknesses of the transmitting coil (3) and the second magnetism isolating sheet is B2, and B2 is more than or equal to 1mm and less than or equal to 2 mm.
8. The rotary radar according to any of claims 1 to 5, characterized in that the distance between the receiving coil (4) and the transmitting coil (3) is not more than 3 mm.
9. The rotary radar according to claim 7, characterized in that said first magnetically-shielding sheet (7) is glued to said rotating plate (2); and/or the presence of a gas in the gas,
the second magnetism isolating sheet is bonded with the fixing plate (1).
10. A plant protection device comprising a rotary radar according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121211071.8U CN215340323U (en) | 2021-06-01 | 2021-06-01 | Rotary radar and plant protection equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121211071.8U CN215340323U (en) | 2021-06-01 | 2021-06-01 | Rotary radar and plant protection equipment |
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| CN215340323U true CN215340323U (en) | 2021-12-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115436947A (en) * | 2021-06-01 | 2022-12-06 | 广州极飞科技股份有限公司 | Rotary radar and plant protection equipment |
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2021
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115436947A (en) * | 2021-06-01 | 2022-12-06 | 广州极飞科技股份有限公司 | Rotary radar and plant protection equipment |
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