Control circuit board and flight device

Abstract

The utility model discloses a control circuit board and a flight device. The control circuit board comprises a printed circuit board, a main control module and a power supply module, the printed circuit board comprises a first surface and a second surface which are opposite to each other, and the first surface comprises a first functional area, a second functional area and a third functional area; the first functional area, the second functional area and the third functional area are sequentially arranged along a first direction parallel to the printed circuit board; the main control module, the posture monitoring module and the power supply module are respectively placed in the first functional area, the second functional area and the third functional area of the second surface, so that the distance between the main control module and the power supply module can be increased as much as possible in a limited control circuit board, and the electromagnetic interference of the power supply module on the main control module is reduced. Meanwhile, the main control module and the power supply module serve as modules with large heat productivity, and the main control module is far away from the power supply module, so that the heat can be prevented from being excessively concentrated to influence performance exertion.

Description

Technical Field

[0001] This application belongs to the field of circuit board layout technology, and in particular relates to a control circuit board and a flight device. Background Technology

[0002] With the maturity of drone technology, drones have been widely used in various industries such as entertainment, agriculture, logistics, surveying and mapping, and emergency rescue. To improve maneuverability and endurance, the weight and size of the drone are very important. However, drones require many components and have limited internal space, which makes them prone to interference. Utility Model Content

[0003] The purpose of this application is to provide a control circuit board and flight device, which aims to solve the problem of mutual interference between internal components of traditional drones.

[0004] A first aspect of this application provides a control circuit board for use in a drone. The control circuit board includes: a printed circuit board, the printed circuit board including a first surface and a second surface opposite to each other, the first surface and the second surface each including a first functional area, a second functional area and a third functional area; the first functional area, the second functional area and the third functional area are arranged sequentially along a first direction parallel to the printed circuit board, a first clearance area is provided between the first functional area and the second functional area, and a second clearance area is provided between the second functional area and the third functional area; a main control module, the main control module being disposed in the first functional area; an attitude monitoring module, the attitude monitoring module being disposed in the second functional area, the attitude monitoring module being electrically connected to the main control module, the attitude monitoring module being used to acquire the attitude of the drone; and a power module, the power module being disposed in the second surface and located in the third functional area, the power module being electrically connected to the main control module and the attitude monitoring module.

[0005] In one embodiment, the attitude monitoring module includes at least one of a gyroscope and an accelerometer.

[0006] In one embodiment, the control circuit board further includes a memory module, which is disposed on the first surface and located in the first functional area, and is electrically connected to the main control module.

[0007] In one embodiment, the control circuit board further includes a drive module, which is disposed on the first surface and located in the third functional area, and is electrically connected to the main control module. The drive module is used to output a PWM drive signal.

[0008] In one embodiment, the driving module includes a PWM signal generator and at least one driving interface connected to the PWM signal generator; the PWM signal generator is connected to the main control module.

[0009] In one embodiment, the control circuit board further includes an expansion interface; the expansion interface is disposed on the edge of the printed circuit board; the expansion interface includes at least one of a serial interface, a GPS interface, a magnetometer interface, and a camera interface.

[0010] In one embodiment, the control circuit board further includes a barometer, which is disposed on the second surface and located in the first functional area.

[0011] In one embodiment, the control circuit board further includes a data storage module disposed on the second surface, and the data storage module is at least partially located in the first functional area.

[0012] In one embodiment, the printed circuit board is square, and mounting holes are provided at each of the four corners of the printed circuit board, with equal spacing between adjacent mounting holes.

[0013] A second aspect of this application provides a flight device including a control circuit board as described above.

[0014] The beneficial effects of this application embodiment compared to the prior art are as follows: By placing the main control module, attitude monitoring module, and power supply module in the first functional area, the second functional area, and the third functional area of ​​the second surface, respectively, the distance between the main control module and the power supply module can be maximized within a limited control circuit board, reducing electromagnetic interference from the power supply module to the main control module. Simultaneously, since the main control module and power supply module are modules that generate significant heat, keeping the main control module away from the power supply module can prevent excessive heat concentration, which could negatively impact performance. Attached Figure Description

[0015] Figure 1 A schematic diagram of a control circuit board provided in one embodiment of this application;

[0016] Figure 2 This is a schematic diagram of the first surface of a control circuit board provided in an embodiment of this application.

[0017] Figure 3 This is a schematic diagram of the second surface of a control circuit board provided in an embodiment of this application.

[0018] Figure 4 A schematic diagram of a flight device provided in an embodiment of this application. Detailed Implementation

[0019] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0020] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0021] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0023] Figure 1 A schematic diagram of a control circuit board according to an embodiment of this application is shown. For ease of explanation, only the parts relevant to this embodiment are shown, and the details are as follows:

[0024] A control circuit board 10 is applied to a drone. The control circuit board 10 includes: a printed circuit board 100, a main control module 200, an attitude monitoring module 300, and a power supply module 400.

[0025] The printed circuit board 100 includes a first surface and a second surface opposite to each other. Both the first and second surfaces include a first functional area 110, a second functional area 120, and a third functional area 130. The first functional area 110, the second functional area 120, and the third functional area 130 are arranged sequentially along a first direction parallel to the printed circuit board 100. The main control module 200 is disposed in the first functional area 110. A first clearance area 140 is provided between the first functional area 110 and the second functional area 120, and a second clearance area 150 is provided between the second functional area 120 and the third functional area 130. The attitude monitoring module 300 is disposed in the second functional area 120 and is electrically connected to the main control module 200. The attitude monitoring module 300 is used to acquire the attitude of the UAV. The power module 400 is disposed on the second surface and located in the third functional area 130. The power module 400 is electrically connected to the main control module 200 and the attitude monitoring module 300.

[0026] By placing the main control module 200, attitude monitoring module 300, and power supply module 400 in the first functional area 110, the second functional area 120, and the third functional area 130 of the second surface, respectively, the distance between the main control module 200 and the power supply module 400 can be maximized within the limited control circuit board 10, reducing electromagnetic interference from the power supply module 400 to the main control module 200. Simultaneously, since the main control module 200 and power supply module 400 are modules that generate significant heat, keeping the main control module 200 away from the power supply module 400 also prevents excessive heat concentration, which could negatively impact performance.

[0027] In the first clearance area 140 and the second clearance area 150, apart from necessary wiring, no other electronic devices will be placed on the printed circuit board 100. The first clearance area 140 and the second clearance area 150 can further realize physical isolation between various functional areas and avoid electromagnetic interference.

[0028] In some embodiments, the main control module 200 specifically includes a main control chip and corresponding peripheral circuits. The main control chip is used for data processing and logic operations. When applied to a drone, the main control module 200 can be used to control the drone's flight, communication, etc., based on the drone's attitude provided by the attitude monitoring module 300.

[0029] In some embodiments, the power module 400 includes a power control chip, a step-down unit, and a power interface. The power interface is used to connect to an external circuit (such as an energy storage module like a battery). The step-down unit is used to connect to the main control module, the attitude control module, and the power interface. The power control chip is connected to the step-down unit and the power interface. The power control chip is used to detect the connected external power supply through the power interface and control the step-down unit to generate and output a multi-level operating voltage based on the voltage provided by the external power supply for the operation of other power-consuming modules (including the main control module 200 and the attitude monitoring module 300) on the control circuit board 10.

[0030] It is understandable that the step-down unit is prone to generating significant electromagnetic interference during operation. By placing the step-down unit in the third functional area, it can be prevented from affecting the operation of other modules in the first functional area. All power-requiring modules on the control circuit board 10 can be connected to the power supply module 400 to obtain their corresponding operating voltages; this will not be elaborated further in this embodiment.

[0031] In one embodiment, the attitude monitoring module 300 includes at least one of a gyroscope and an accelerometer.

[0032] Understandably, a gyroscope can be used to measure the angular velocity change of the control circuit board 10, and an accelerometer can be used to measure the acceleration change of the control circuit board 10. When the control circuit board 10 is used in a drone, the attitude of the drone can be obtained through the attitude monitoring module 300.

[0033] It should be noted that compared to the main control module 200, the attitude monitoring module 300 generates less heat and has stronger electromagnetic interference resistance. Therefore, the attitude monitoring module 300 can be placed in the second functional area 120, separated from the first functional area 110 and the third functional area 130. Placing the attitude monitoring module 300 in the second functional area 120, close to the main control module 200, also facilitates electrical connection between the attitude monitoring module 300 and the main control module 200. Since the second functional area 120 is located between the first functional area 110 and the third functional area 130, in the center of the control circuit board 10, it facilitates electrical connection between the attitude monitoring module 300 and the main control module 200 via the shortest path, enabling high-speed transmission of electrical signals. This significantly improves the response time of the main control module 200, effectively solving the problem of control lag.

[0034] In one embodiment, such as Figure 2 As shown, the control circuit board 10 also includes a memory module 500, which is disposed on the first surface and located in the first functional area 110. The memory module 500 is electrically connected to the main control module 200.

[0035] Specifically, the memory module 500 may include memory chips, for example, it may include DDR3 memory chips.

[0036] The memory module 500 and the main control module 200 generate a lot of heat during operation. Placing the memory module 500 and the main control module 200 in the first functional area 110 can prevent the heat from the memory module 500 and the main control module 200 from affecting the operation of other modules. At the same time, placing the memory module 500 and the main control module 200 together can facilitate the wiring of high-speed signal lines, reduce interference from the power supply module 400, and facilitate the connection of the main control module 200 to other modules.

[0037] The area around the memory module 500 and the main control module 200 can also be used to set up capacitors and other devices.

[0038] In one embodiment, such as Figure 2 As shown, the control circuit board 10 also includes a drive module 600. The drive module 600 is located in the third functional area 130 and is electrically connected to the main control module 200. The drive module 600 is used to output PWM (Pulse width modulation) drive signals.

[0039] Specifically, the PWM drive signal can be used to control the drone's power module and control the drone's movement.

[0040] For example, PWM drive signals can be used to drive the electronic speed controller and servos of a drone, thereby enabling control of the drone's movement.

[0041] It should be noted that the drive module 600 is also prone to generating significant interference during operation. Therefore, placing the drive module 600 on the first surface and in the third functional area 130 can prevent the interference generated by the drive module 600 from affecting the operation of the main control module 200.

[0042] In one embodiment, the drive module 600 includes a PWM signal generator 610 and at least one drive interface 620 connected to the PWM signal generator 610. The PWM signal generator 610 is connected to the main control module 200.

[0043] Specifically, the PWM signal generator 610 can be located in the third functional area 130, and the drive interface 620 can be located at the edge of the third functional area 130. The drive interface 620 may include an ESC interface and a servo interface. The ESC interface can be used to connect to the electronic speed controller on the UAV, and the servo interface can be used to connect to the servos on the UAV.

[0044] The PWM signal generator 610 can be electrically connected to the main control module 200, and under the control of the main control module 200, it generates and outputs the corresponding PWM drive signal.

[0045] In one embodiment, such as Figure 2 , Figure 3 As shown, the control circuit board 10 also includes an expansion interface 700. The expansion interface 700 is located at the edge of the printed circuit board 100 and is connected to the main control module 200. The expansion interface 700 includes at least one of a serial interface 710, a USB interface, a GPS interface 720, a magnetometer interface 730, and a camera interface 740.

[0046] It is understood that the main control module 200 can connect to other external modules through various expansion interfaces 700 to expand its functionality. Specifically, the expansion interface 700 may include a corresponding interface socket and a corresponding interface chip; the specific structure of the expansion interface 700 will not be described in detail in this embodiment.

[0047] In one embodiment, the control circuit board 10 is provided with at least one serial interface 710, at least one GPS (Global Positioning System) interface 720, at least one magnetometer interface 730 and at least one camera interface 740.

[0048] It should be noted that the specific number and type of expansion interfaces 700 can be set according to actual needs. At the same time, based on the signal delay and signal quality requirements of each expansion interface 700, they can be selectively placed in different functional areas. It can be understood that expansion interfaces 700 with higher signal delay and higher signal quality requirements can be placed in the first functional area 110, so that they are closer to the main control module 200 and further away from the power supply module 400.

[0049] Specifically, the serial interface 710 may include a UART (Universal Asynchronous Receiver / Transmitter) interface, an I2C (Inter-Integrated Circuit) interface, or a USB (Universal Serial Bus) interface. The expansion interface 700 may include two serial interfaces 710, used for connecting to the receiver and the pan / tilt unit respectively. The two serial interfaces 710 are respectively located in the second functional area 120 of the first surface (for connection to the pan / tilt unit) and the first functional area 110 of the first surface (for connection to the positioning receiver). It is understood that the specific type of the serial interface 710 can be set according to actual needs; for example, an appropriate interface type can be selected based on the object to be connected.

[0050] In some embodiments, the second functional area 120 of the second surface is further provided with a serial interface 710 as a backup interface.

[0051] In one embodiment, the control circuit board 10 includes a plurality of USB interfaces, wherein two USB interfaces are respectively disposed in the second functional area of ​​the first surface (for connection to the image transmission module) and the first functional area of ​​the second surface (for connection to the camera module).

[0052] The USB interface may also include a Type-C interface, which can be located in the second functional area of ​​the second surface.

[0053] In one embodiment, the GPS interface 720 and the magnetometer interface 730 of the control circuit board 10 are disposed in the first functional area 110 of the first surface. The GPS interface 720 is used to connect to an external GPS module to obtain positioning information, and the magnetometer interface 730 is used to connect to an external magnetometer to obtain magnetic field strength information. The positioning information and magnetic field strength information can be provided to the main control module 200, which then positions the UAV.

[0054] In some embodiments, the GPS interface 720 and the magnetometer interface 730 can be combined into a single interface.

[0055] Understandably, when the control circuit board 10 is applied to a drone, the timeliness of the positioning information and magnetic field strength information obtained by the GPS interface 720 and the magnetometer interface 730 is very important. It will greatly affect the drone's real-time position update, thereby affecting the control of flight direction, route and speed. Therefore, setting the GPS interface 720 and the magnetometer interface 730 in the first functional area 110 of the first surface can greatly reduce the delay of positioning information and magnetic field strength information, and at the same time avoid interference from the power module 400 in the third functional area 130.

[0056] In one embodiment, a camera interface 740 is disposed in a first functional area of ​​the second surface for connecting to a camera. For example, the camera interface 740 may specifically be a DVP (Digital Video Port) interface.

[0057] In one embodiment, such as Figure 2 , Figure 3 As shown, the control circuit board 10 also includes a barometer 810, which is disposed on the second surface and located in the first functional area 110, and is connected to the main control module 200.

[0058] The first surface of the control circuit board 10 can be used as the front of the control circuit board 10, that is, the first surface faces up and the second surface faces down. Since the edge of the control circuit board 10 is usually close to the shell of the drone, placing the barometer 810 on the second surface can minimize the impact of light and airflow on the barometer 810.

[0059] In one embodiment, such as Figure 2 , Figure 3 As shown, the control circuit board 10 also includes a data storage module 820, which is disposed on the second surface and is at least partially located in the first functional area 110 and connected to the main control module 200.

[0060] The data storage module 820 can be electrically connected to the main control module 200 to store relevant data output by the main control module 200.

[0061] Specifically, the data storage module 820 may include an SD card, which can be installed via an SD card interface located on the control circuit board 10. Because the data storage module 820 is relatively large, it is positioned on the second surface to make efficient use of the space on the control circuit board 10.

[0062] In some embodiments, the control circuit board 10 further includes a power detection chip 830 connected to the main control module 200. The power detection chip 830 is disposed in the first functional area of ​​the first surface. The power detection chip 830 can be connected to the power module 400 to detect the power of the energy storage module (e.g., battery) and provide the obtained power data to the main control module 200 so that the main control module 200 can control the power and other parameters of other power-consuming modules according to the power data.

[0063] In one embodiment, the printed circuit board 100 is square, and mounting holes 900 are provided at each of the four corners of the printed circuit board 100, with equal spacing between adjacent mounting holes 900.

[0064] Specifically, the mounting hole 900 can have a diameter of 4mm to accommodate M4 screws. M4 screws have high tensile strength and can withstand the high-frequency vibration working environment of drones, allowing the printed circuit board 100 to be rigidly connected to the drone's frame.

[0065] In some embodiments, the spacing between the mounting holes 900 can be 35mm (i.e., the four mounting holes 900 are respectively set at the four corners of a 35mm*35mm square) to accommodate most drones and achieve "one board for multiple models" adaptation.

[0066] Figure 4 A schematic diagram of a flight device according to an embodiment of this application is shown. For ease of explanation, only the parts relevant to this embodiment are shown, and the details are as follows:

[0067] A flight device 20 includes a control circuit board 10 and a power unit 30 as described above. The power unit 30 is electrically connected to the control circuit board 10, which can be used to control the operation of the power unit 30 to enable the flight device 20 to fly.

[0068] Since the flight device 20 includes the control circuit board 10 of any of the above embodiments, the flight device 20 has the beneficial effects of the control circuit board 10 of any of the above embodiments, which will not be repeated here.

[0069] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is merely an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit. Furthermore, the specific names of the functional units and modules are only for easy differentiation and are not intended to limit the scope of protection of this application. The specific working process of the units and modules in the above system can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0070] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0071] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A control circuit board, characterized in that, The control circuit board, used in drones, includes: A printed circuit board includes a first surface and a second surface opposite to each other. The first surface and the second surface each include a first functional area, a second functional area and a third functional area. The first functional area, the second functional area and the third functional area are arranged sequentially along a first direction parallel to the printed circuit board. A first clearance area is provided between the first functional area and the second functional area, and a second clearance area is provided between the second functional area and the third functional area. The main control module is located in the first functional area; An attitude monitoring module is located in the second functional area and is electrically connected to the main control module. The attitude monitoring module is used to acquire the attitude of the UAV. A power module is disposed on the second surface and located in the third functional area. The power module is electrically connected to the main control module and the attitude monitoring module.

2. The control circuit board as described in claim 1, characterized in that, The attitude monitoring module includes at least one of a gyroscope and an accelerometer.

3. The control circuit board as described in claim 1 or 2, characterized in that, The control circuit board also includes a memory module, which is disposed on the first surface and located in the first functional area, and is electrically connected to the main control module.

4. The control circuit board as described in claim 1 or 2, characterized in that, The control circuit board further includes a drive module, which is disposed on the first surface and located in the third functional area, and is electrically connected to the main control module. The drive module is used to output PWM drive signals.

5. The control circuit board as described in claim 4, characterized in that, The drive module includes a PWM signal generator and at least one drive interface connected to the PWM signal generator; The PWM signal generator is connected to the main control module.

6. The control circuit board as described in claim 1 or 2, characterized in that, The control circuit board also includes an expansion interface; The expansion interface is located on the edge of the printed circuit board and is connected to the main control module. The expansion interface includes at least one of a serial interface, a GPS interface, a magnetometer interface, and a camera interface.

7. The control circuit board as described in claim 1 or 2, characterized in that, The control circuit board also includes a barometer, which is disposed on the second surface and located in the first functional area, and is connected to the main control module.

8. The control circuit board as described in claim 1 or 2, characterized in that, The control circuit board also includes a data storage module, which is disposed on the second surface and is at least partially located in the first functional area, and is connected to the main control module.

9. The control circuit board as described in claim 1 or 2, characterized in that, The printed circuit board is square, and mounting holes are provided at each of the four corners of the printed circuit board, with equal spacing between adjacent mounting holes.

10. A flight device, characterized in that, Includes the control circuit board as described in any one of claims 1 to 9.

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