WO2018166059A1

WO2018166059A1 - Remote control, electronic device, and unmanned aerial vehicle

Info

Publication number: WO2018166059A1
Application number: PCT/CN2017/083827
Authority: WO
Inventors: 叶勇云
Original assignee: 深圳市大疆创新科技有限公司
Priority date: 2017-03-17
Filing date: 2017-05-10
Publication date: 2018-09-20
Also published as: CN109479380A; CN206542667U; CN109479380B

Abstract

A remote control, comprising: a housing and a circuit board (200). The circuit board (200) comprises at least three layers, and is fixed in a cavity formed by the housing. A first layer of the circuit board (200) is provided with a first adapter and a second adapter. A first hollow area (213) is formed on a second layer of the circuit board (200) and at a position corresponding to the first adapter. The second adapter is circular, and a forbidden space area (216) is formed at the periphery of the second adapter. The remote control can improve the impedance continuity at positions where a circuit board is connected to a first adapter and a second adapter, so as to improve signal transmission quality. Also provided are an electronic device and an unmanned aerial vehicle.

Description

Remote control, electronic equipment and drones

Technical field

The invention relates to a remote controller, an electronic device and a drone, and belongs to the technical field of circuit board manufacturing.

Background technique

The remote control is standard on most electronic devices (such as drones), so that it can remotely control the host in the electronic device to improve the handling of the electronic device.

Existing remote controls generally include an outer casing and a circuit board (also referred to as a PCB board) that is secured within the casing. The circuit boards are formed by stacking multiple layers of structures. Circuits are formed on the circuit board, and various connectors are connected to the circuit board by soldering, for example, IPEX adapters and BNC adapters.

Although the board manufacturer manufactures the board, it will ensure that the SDI signal lines connected to the IPEX adapter and the BNC adapter on the board meet their respective characteristic impedances. For example, the characteristic impedance of the SDI signal line connected to the IPEX adapter is 50 ohms, the characteristic impedance of the SDI signal line connected to the BNC adapter is 75 ohms; however, when the IPEX adapter and BNC adapter are soldered to the board, impedance changes occur at the junction, affecting signal transmission.

Summary of the invention

In order to solve the above or other potential problems existing in the prior art, the present invention provides a remote controller, an electronic device, and a drone.

According to some embodiments of the present invention, there is provided a remote controller comprising: a housing and a circuit board; the circuit board is at least three layers, and the circuit board is fixed in a cavity formed by the housing; the circuit The first layer of the board is provided with a first adapter and a second adapter; a first hollowed out area is formed on the second layer of the circuit board corresponding to the first adapter; the second The adapter is circular, and a gap-free area is formed outside the circumference of the second adapter.

According to a further improvement of the above remote controller, a second hollowed out area is also formed on the third layer of the circuit board corresponding to the first adapter.

According to a further improvement of the above remote controller, the second hollowed out area is rectangular.

According to a further improvement of the above remote controller, the forbidden area is annular.

In a further improvement of the remote controller described above, the distance of the ring is greater than the diameter of the second adapter.

A further improvement of the remote controller described above is that the annular distance is 1.74 mm and the circular second adapter has a diameter of 1.60 mm.

In a further improvement of the above remote controller, the first hollowed out area is rectangular.

According to a further improvement of the above remote controller, the number of layers of the circuit board is ten layers.

A further improvement of the above remote controller is that the first adapter is an IPEX adapter.

A further improvement of the above remote controller is that the second adapter is a BNC adapter.

According to some embodiments of the present invention, an electronic device is provided, including: a host and the above-mentioned remote controller, wherein the remote controller is in communication connection with the host for controlling an operating state of the host.

According to some embodiments of the present invention, there is provided a drone, comprising: a body and the remote controller, wherein the remote controller is communicatively coupled to the body for controlling a flight state of the body .

The technical solution of the embodiment of the present invention is that a first hollowed out area corresponding to the first adapter position is disposed on the second layer of the circuit board, and a forbidden area is formed on the circuit board outside the circumference of the second adapter The impedance continuity between the board and the first adapter and the second adapter can be improved, thereby improving the signal transmission quality.

DRAWINGS

1 is a schematic structural diagram of a drone according to an embodiment of the present invention;

2 is an exploded perspective view of a circuit board connected to an IPEX adapter according to an embodiment of the present invention;

3 is a schematic structural diagram of a circuit board connected to a BNC adapter according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of frequency-loss according to an embodiment of the present invention; FIG.

FIG. 5 is a time domain waveform diagram according to an embodiment of the present invention; FIG.

FIG. 6 is an eye diagram of an embodiment of the present invention.

In the picture:

100, UAV; 110, fuselage; 111, central part;

112, external part; 113, arm; 114, landing gear;

120, propulsion system; 121, propulsion motor; 122, propeller;

130, load; 131, imaging equipment; 140, control system;

141, controller; 142, remote control; 143a, storable medium;

143b, storable medium; 144, display; 145, keyboard;

148, input / output equipment; 150, cloud platform; 160, communication link;

200, circuit board; 210, IPEX signal pad; 211, IPEX ground pad;

212, a connection area; 213, a first hollowed out area; 214, a second hollowed out area;

215, BNC adapter; 216, forbidden area; 217, ground signal.

detailed description

The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

In the following embodiments, the technical term "impedance" is used to refer to a characteristic impedance (also referred to as "characteristic impedance"), which is not a DC resistance but a concept in long-line transmission.

Specifically, in the high frequency range, during signal transmission, where the signal edge arrives, an instantaneous current is generated between the signal line and the reference plane (power or ground plane) due to the establishment of the electric field, if the transmission line is isotropic Then, as long as the signal is transmitting, there is always a current I, and if the output level of the signal is V, during the signal transmission, the transmission line will be equivalent to a resistor, the size is V/I, and this equivalent The resistance is called the characteristic impedance Z of the transmission line. Thus, when the signal is in the process of transmission, if the characteristic impedance on the transmission path changes, the signal will be reflected at the node where the impedance is discontinuous.

In addition, in the following embodiments, the technical term "transfer interface" used may be any suitable structure for connecting pads such as IPEX adapters or BNC adapters, such as pads or vias provided on the circuit board.

FIG. 1 is a schematic structural diagram of a drone provided by the embodiment. The UAV 100 can include a fuselage 110, which in turn can include a central portion 111 and one or more outer portions 112. In Figure 1 In some embodiments shown, the fuselage 110 includes four outer portions 112 (eg, arms 113) that extend away from the central portion 111 and are spaced apart from one another. In other embodiments, the fuselage 110 can include other numbers of outer portions 112. In these embodiments, a separate outer portion may be used to support one or more components of the propulsion system 120, for example, the arm 113 may be used to support the propulsion motor 121 of the propulsion system 120. The propulsion system 120 includes one or more propellers 122 that drive one or more propulsion motors 121 of the one or more propellers 122 to control one or more electrical tones of the one or more propulsion motors 121 (not shown) ). Wherein, one or more of the above-described electrical adjustments are optionally mounted on the central portion 111 or one or more external portions 112.

The body 110 can carry a load 130, such as an imaging device 131. In some embodiments, imaging device 131 can include a camera that can be used to capture, for example, video data, still image data, or both. In still other embodiments, load 130 may include other types of sensors, other types of loads (eg, courier wrappers or other deliverables), or both. In these embodiments, the load 130 is supported by the fuselage 110, which is disposed between the load 130 and the fuselage 110 to allow the load 130 to move and position independently relative to the fuselage 110. As shown in FIG. 1, when the UAV 100 is dropped or placed on a support such as the ground, the optional landing gear 114 can support the UAV 100 to a suitable height to protect the load 130 and other components on the UAV 100.

In some embodiments, the UAV 100 can include a control system 140 that includes some components that are mounted on the UAV 100, as well as some components that are disposed outside of the UAV 100. For example, control system 140 can include a controller 141 mounted on UAV 100; and a remote control 142 disposed remotely from UAV 100 that is coupled to controller 141 via a communication link 160 (eg, a wireless link) so that the user can be on the ground The UAV100 is manipulated to change the motion state of the UAV100. The controller 141 can include a circuit board, optionally in communication with the circuit board, with a storable medium 143a storing a computer readable set of instructions for performing the actions of the UAV 100, including but not limited to the propulsion system 120 and Load 130. The remote control 142 may also include a circuit board and one or more input/output devices 148 (e.g., display 144 and keyboard 145) that are electrically coupled to the circuit board, or a storable medium 143b is communicatively coupled to the circuit board. In some embodiments, the user can manipulate the keyboard 145 to remotely control the UAV 100, and the user can also receive feedback from the UAV 100 on various operations via the display 144 or other device. In other embodiments, the UAV 100 may also be autonomously controlled, in which case the remote control 142 may be removed, or may be used only for user monitoring of the UAV flight status. The storable medium 143a is optional from the UAV 100 Removed. Similarly, storable medium 143b can also optionally be removed from remote control 142, for example, by one or more input/output devices 148 that can be freely inserted by a user, or removed therefrom for execution of an executable program. Updated or replaced to allow the controller to perform more or more precise operations on the UAV100. Of course, such an update or replacement operation of the executable program can also be performed in an online manner, for example, by information exchange between the UAV 100 and the server.

The circuit board of the controller 141, or the remote controller 142, or both, has good impedance continuity when connected to an external adapter (for example, an IPEX adapter or a BNC adapter), thereby ensuring the board and the adapter. The quality of signal transmission between.

2 is an exploded perspective view of a circuit board connected to an IPEX adapter according to the embodiment; FIG. 3 is a schematic structural diagram of a circuit board connected to a BNC adapter according to the embodiment. It should be noted that the IPEX adapter and the BNC adapter in the above FIG. 2 and FIG. 3 are optionally soldered on the same circuit board 200 or respectively soldered on two different circuit boards 200.

Please refer to FIG. 2, which shows only a partial schematic view of the three layers of the circuit board from top to bottom. Of course, the circuit board 200 includes at least three layers as shown in FIG. 2, for example, ten layers. When making a circuit board, one or more of the top layer (TOP layer, the uppermost layer shown in the figure) on the top of the board may include IPEX signal pads 210 (ie, IPEX interface) and IPEX ground pads 211. The connection area 212 of the IPEX adapter inside. In some embodiments, the connection region 212 can be rectangular or any other suitable shape. In order to make the impedance of the IPEX adapter soldered to the IPEX signal pad 210 continuous, in some embodiments, the first hollowed out region 213 may be formed at a position corresponding to the IPEX ground pad 211 of the TOP layer of the second layer, Reflow is formed on any of the remaining layers, for example, reflow may be formed on the third layer, or reflow may be formed on the fourth layer. Wherein, the shapes of the first hollowed out area 213 and the connected area 212 may be the same or different, for example, in some embodiments, both may be rectangular.

Further, in order to improve the impedance continuity after the IPEX adapter and the circuit board are connected, in other embodiments, when the circuit board is not less than 4 layers, it may be based on the above embodiment, in the third layer and the TOP. The corresponding location of the IPEX ground pad 211 of the layer forms a second hollowed out region 214 and forms a reflow on any of the remaining layers. For example, in some embodiments, the fourth layer can be configured as a reflow layer in order to obtain a board with good structural strength and IPEX transimpedance impedance continuity. The shape of the second hollowed out area 214 and the first hollowed out area 213 and the connecting area 212 may be the same or different. For example, in some embodiments, all three may be rectangular.

In the above embodiment, IPEX is improved by reducing the distributed capacitance of the pad by placing a second layer corresponding to the position of the IPEX adapter on the circuit board or the second layer and the third layer. The impedance continuity of the adapter. Also, in some embodiments, the distributed capacitance of the pads can be further reduced by increasing the thickness of the IPEX adapter.

Referring to FIG. 3, on the basis of the above embodiment, optionally, other portions of the same circuit board are provided with circular vias as BNC transfer interfaces for soldering BNC adapters 215 around the BNC transfer interface. One or more ground signals 217 are optionally formed, for example, four substantially rectangular ground signals 217 may be arranged centered on the BNC transfer interface in some embodiments. A loop-out area 216 is formed outside the circumference of the BNC transfer interface. For example, in some embodiments, the blank area 216 may be formed between the outer edge of the BNC transfer interface and the four ground signals 217. In some specific embodiments, the no-empty region 216 can be an annular region surrounding the center of the BNC transponder. In addition, as can be seen from FIG. 3, when the BNC adapter 215 is soldered to the BNC adapter, at least a portion of the rounded end of the signal lead of the BNC adapter 215 is received in the via and soldered to the board 200. together.

Further, in some embodiments, good impedance continuity can be achieved by configuring the diameter R of the BNC transition interface (ie, the via) or the distance L of the annular cutout region, or both. For example, the distance L from the outer ring of the annular region to the outer edge of the circular BNC transfer interface can be set to be larger than the diameter R of the circular BNC transfer interface. In a specific embodiment, the diameter R of the circular BNC transfer interface can be set to 1.60 mm, and the distance L between the outer ring of the annular blank area and the outer edge of the BNC transfer interface is set to 1.74 mm. According to the applicant's test, in the above specific embodiment, a frequency-loss situation diagram as shown in FIG. 4, a time domain waveform diagram shown in FIG. 5, and an eye diagram shown in FIG. 6 can be obtained. Referring to Figures 4-6 above, in the above specific embodiment, the welding of the BNC adapter and the BNC adapter 215 has good impedance continuity. It should be understood that the data measured in the above-mentioned FIG. 4 to FIG. 6 is based on a specific test environment and is only used to represent the effects of the present embodiment, and does not represent a limitation of the present invention. Among them, the leftmost line shown in Figure 4 is the signal loss after the signal passes through the connector, and the two lines on the right side reflect the signal at both ends of the connector.

In the above embodiment, by setting a certain area as a forbidden area on the outer edge of the BNC transfer interface for connecting the BNC adapter on the circuit board, the parasitic capacitance, or parasitic inductance at the BNC transfer interface, or both, can be improved. Improve the impedance continuity of the BNC transfer interface. In addition, in other embodiments, the diameter, pad diameter, and pad depth of the BNC interface can be further reversed. One or more of the pad diameters are optimized to improve the impedance continuity of the BNC transfer interface.

In the above embodiment, it mainly introduces how to make the circuit board of the remote controller and the controller have good impedance continuity after being welded with the IPEX adapter and the BNC adapter, but it should be understood that, in other electronic devices, for example, Mobile phones, tablets or televisions, etc., can also be used to set the adapters soldered on them to ensure the continuity of the impedance at the connection and obtain better signal transmission quality. For example, in some embodiments, the electronic device can include a host and the remote controller described above, and control the working state of the host through a communication connection of the remote controller to the host.

In addition, the above describes how to achieve good impedance continuity after the board is soldered to the external connector through the IPEX transfer interface and the BNC transfer interface on the circuit board, but it should be understood that the above IPEX transfer interface and BNC transfer interface It can also be any suitable adapter on the circuit board of the prior art. Meanwhile, the technical features of the above various embodiments may be used singly or in any combination without contradiction. Moreover, some of the functions and effects of the remote controller are only schematically described in the above embodiments, but obviously, there may be other functions and effects that are not described but can be determined or inferred by those skilled in the art without any doubt. These effects and effects are also considered to be the disclosure of the present application and are within the scope of the present invention. Moreover, the technical features in the above embodiments may be increased or decreased, and such increases or decreases are also within the scope of the present invention. For example, the above description only describes the remote control 142 including the circuit board and the storable medium 143b, but it is apparent that the remote control 142 will generally include a housing for mounting the circuit board within the cavity formed by the housing to avoid the circuit board being damage.

It should be noted that the above embodiments are only for explaining the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that: The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the scope of the technical solutions of the embodiments of the present invention. .

Claims

A remote controller, comprising: a casing and a circuit board;

The circuit board is at least three layers, and the circuit board is fixed in a cavity formed by the outer casing;

The first layer of the circuit board is provided with a first adapter and a second adapter;

a first hollowed out area is formed on the second layer of the circuit board corresponding to the first adapter;

The second adapter is circular, and a cutout portion is formed outside the circumference of the second adapter.
The remote controller according to claim 1, wherein a second hollowed out area is also formed on the third layer of the circuit board corresponding to the first adapter.
The remote controller according to claim 2, wherein the second hollowed out area is rectangular.
The remote controller according to claim 1, wherein said forbidden area is annular.
The remote controller according to claim 4, wherein the annular distance is greater than the diameter of the second adapter.
The remote controller according to claim 5, wherein said annular distance is 1.74 mm, and said circular second adapter has a diameter of 1.60 mm.
The remote controller according to any one of claims 1 to 4, wherein the first hollowed out area is rectangular.
The remote controller according to any one of claims 1 to 6, wherein the number of layers of the circuit board is ten.
The remote controller according to any one of claims 1 to 6, wherein the first adapter is an IPEX adapter.
The remote controller according to any one of claims 1 to 6, wherein the second adapter is a BNC adapter.
An electronic device, comprising: a host and a remote controller, wherein the remote controller is communicatively coupled to the host for controlling an operating state of the host, the remote controller further comprising: a housing and a circuit board;

The circuit board is at least three layers, and the circuit board is fixed in a cavity formed by the outer casing;

The first layer of the circuit board is provided with a first adapter and a second adapter;

a first hollowed out area is formed on the second layer of the circuit board corresponding to the first adapter area;

The second adapter is circular, and a cutout portion is formed outside the circumference of the second adapter.
The electronic device according to claim 11, wherein a second hollowed out area is also formed on the third layer of the circuit board corresponding to the first adapter.
The electronic device of claim 12 wherein said second hollowed out area is rectangular.
The electronic device of claim 11 wherein said forbidden area is annular.
The electronic device of claim 14 wherein said annular distance is greater than a diameter of said second adapter.
The electronic device according to claim 15, wherein said annular distance is 1.74 mm and said circular second adapter has a diameter of 1.60 mm.
The electronic device according to any one of claims 11 to 16, wherein the first hollowed out area is rectangular.
The electronic device according to any one of claims 11 to 16, wherein the number of layers of the circuit board is ten.
The electronic device of any of claims 11-16, wherein the first adapter is an IPEX adapter.
The electronic device of any of claims 11-16, wherein the second adapter is a BNC adapter.
A drone, comprising: a body and a remote controller, wherein the remote controller is communicatively coupled to the body for controlling a flight state of the body, the remote controller further comprising: a casing and a circuit board;

The circuit board is at least three layers, and the circuit board is fixed in a cavity formed by the outer casing;

The first layer of the circuit board is provided with a first adapter and a second adapter;

a first hollowed out area is formed on the second layer of the circuit board corresponding to the first adapter;

The second adapter is circular, and a cutout portion is formed outside the circumference of the second adapter.
The drone according to claim 21, wherein a second hollowed out area is also formed on the third layer of the circuit board corresponding to the first adapter.
The drone according to claim 22, wherein said second hollowed out area is rectangular.
The drone according to claim 21, wherein said forbidden area is annular.
The drone according to claim 24, wherein said annular distance is greater than a diameter of said second adapter.
The drone according to claim 25, wherein said annular distance is 1.74 mm and said circular second adapter has a diameter of 1.60 mm.
The drone according to any one of claims 21 to 26, wherein the first hollowed out area is rectangular.
The drone according to any one of claims 21 to 26, characterized in that the number of layers of the circuit board is ten.
The drone according to any one of claims 21 to 26, wherein the first adapter is an IPEX adapter.
The drone according to any one of claims 21 to 26, wherein the second adapter is a BNC adapter.