Signal control system of unmanned aerial vehicle

Abstract

The utility model provides a signal control system of an unmanned aerial vehicle, which is used for realizing CAN communication between a flight controller and a sensor assembly and between the flight controller and a motor assembly by configuring a first CAN chip and a CAN signal converter on the unmanned aerial vehicle, the CAN signal converter can convert a CAN signal into a standard signal and then communicate with electrical equipment on the unmanned aerial vehicle, such as a serial port signal, an I2C signal, an SP I signal, a PWM signal and the like, so that the number of required wires is reduced, and direct interference between different signal protocols is effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model discloses the field of unmanned plane, and particularly relates to a signal control system of unmanned plane. BACKGROUND

[0002] With the continuous development of unmanned plane technology, unmanned plane is applied more and more widely in various fields. The accessory products of unmanned plane are also more and more, including air pressure sensor, gyroscope, picture transmission module, cloud platform camera and the like. These accessories usually need to communicate and control with other components of unmanned plane through flight control system. The traditional connection mode usually adopts different specifications of line interface to directly connect, and this mode makes the line very complex, and the use of too much wire not only increases the weight of the aircraft, but also the signal interference between different modules is more serious.

[0003] Therefore, the present application is proposed. CONTENT OF UTILITY MODEL

[0004] The utility model discloses a signal control system of unmanned plane, aims at reducing the interference between different signal protocols on unmanned plane.

[0005] The utility model discloses a signal control system of unmanned plane, aims at reducing the interference between different signal protocols on unmanned plane.

[0006] The flight controller is electrically connected with the first CAN chip, the first CAN chip is electrically connected through the network cable and the CAN signal converter, and the CAN signal converter is electrically connected with the sensor assembly and motor assembly.

[0007] The CAN signal converter is configured to communicate with the sensor assembly and motor assembly after converting the CAN signal into standard signal.

[0008] Preferably, the CAN signal converter includes a second CAN chip, an MCU and a second network port.

[0009] The second network port is electrically connected with the second CAN chip, the second CAN chip is electrically connected with the MCU, and the MCU is configured with a plurality of standard signal ports.

[0010] Preferably, the first CAN chip is configured with a first network port.

[0011] The first end of the network cable is electrically connected with the CAN_H port and CAN_L port of the first CAN chip through the first network port, and the second end of the network cable is electrically connected with the CAN_H port and CAN_L port of the second CAN chip through the second network port.

[0012] Preferably, the first network port and the second network port can be RJ45 port or RJ11 port.

[0013] Preferably, the standard signal port comprises PWM signal port, UART signal port, I2C signal port and SPI signal port.

[0014] Preferably, the sensor assembly comprises GPS module, air pressure sensor, temperature and humidity sensor, gyroscope and accelerometer, magnetometer and high-definition camera.

[0015] The motor assembly comprises steering gear and motor controller.

[0016] The PWM signal port is electrically connected with the steering gear and the motor controller.

[0017] The UART signal port is electrically connected with the air pressure sensor and the temperature and humidity sensor.

[0018] The I2C signal port is electrically connected with the gyroscope and accelerometer and the magnetometer.

[0019] The SPI signal port is electrically connected with the high-definition camera.

[0020] Based on the signal control system of the unmanned aerial vehicle provided by the utility model, the first CAN chip and the CAN signal converter are configured on the unmanned aerial vehicle, which is used for realizing CAN communication between the flight controller and the sensor assembly and the motor assembly, wherein the CAN signal converter can convert the CAN signal into standard signal and then communicate with the electrical equipment on the unmanned aerial vehicle, for example, serial port signal, I2C signal, SPI signal, PWM signal and the like, so that the number of required wires is reduced, and the direct interference between different signal protocols is effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is the module schematic view of the signal control system of the unmanned aerial vehicle provided by the utility model. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only to represent selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] The specific embodiments of the present application will be described in detail below in combination with the drawings.

[0024] The present application discloses a signal control system of unmanned aerial vehicle, which aims to reduce the interference between different signal protocols on the unmanned aerial vehicle.

[0025] Please refer to Figure 1 The present application provides a signal control system of unmanned aerial vehicle, which comprises a flight controller 1, a first CAN chip 2, a network cable, a CAN signal converter, and a sensor assembly 7 and a motor assembly 8.

[0026] The flight controller 1 is electrically connected with the first CAN chip 2, the first CAN chip 2 is electrically connected with the network cable and the CAN signal converter, and the CAN signal converter is electrically connected with the sensor assembly 7.

[0027] The CAN signal converter is configured to convert the CAN signal into a standard signal and communicate with the sensor assembly 7 and the motor assembly 8.

[0028] It should be noted that in the embodiment, the flight controller 1 is connected with the first CAN chip 2 through electrical connection, the flight controller 1 transmits the data to the first CAN chip 2 after collecting the state and control information of each running module of the unmanned aerial vehicle, and the first CAN chip 2 transmits the collected CAN signal to the CAN signal converter by means of the connected network cable. The network cable adopts a standard interface (such as RJ45 or RJ11), which not only ensures the stability of signal transmission, but also greatly simplifies the overall wiring structure, reduces the number of wires and the weight of the aircraft. After receiving the CAN signal, the CAN signal converter converts the CAN signal into corresponding standard signals according to the interface requirements of each sensor and motor assembly 8 in the system, and the standard signals can be PWM, UART, I I C or SPI signals, so that the flight controller 1 only needs to transmit data through a single CAN bus interface, and the communication protocol conversion of all backend devices is completed by the CAN signal converter, thereby avoiding signal interference and electrical compatibility problems caused by mixed use of multiple interfaces, and significantly improving the anti-interference ability and reliability of the system.

[0029] In a possible implementation mode of the present application, the CAN signal converter comprises a second CAN chip 5, an MCU 6, and a second network port 4.

[0030] The second network port 4 is electrically connected with the second CAN chip 5, the second CAN chip 5 is electrically connected with the MCU 6, and the MCU 6 is configured with a plurality of standard signal ports.

[0031] It should be noted that in the embodiment, the second network port 4 and the second CAN chip 5 form a data transmission channel through a stable electrical connection mode, and the second CAN chip 5 transmits the CAN signal to the MCU 6 after being preliminarily processed after receiving the CAN signal transmitted from the flight controller 1 or other front-end modules; the MCU 6 as a core control unit is built-in with a plurality of standard signal ports, and can convert the CAN signal into a plurality of standard signals including PWM, UART, I I C and SPI according to the preset conversion logic, so as to meet the communication requirements of different terminal devices such as sensor assembly 7 and motor assembly 8, wherein the chip signal of the MCU 6 can be an STM32 series single-chip microcomputer, of course, it can also be other types of chip models, which are not limited here, but all of them are within the protection scope of the present application.

[0032] In a possible implementation mode of the present application, the first CAN chip 2 is configured with a first network port 3.

[0033] The first end of the network cable is electrically connected with the CAN_H port and the CAN_L port of the first CAN chip 2 through the first network port 3, and the second end of the network cable is electrically connected with the CAN_H port and the CAN_L port of the second CAN chip 5 through the second network port 4.

[0034] It should be noted that in the embodiment, one end of the network cable is directly connected with the CAN_H and CAN_L ports of the first CAN chip 2 through the first network port 3, so that the complete transmission of the differential signal is realized; and the other end of the network cable is electrically connected with the CAN_H and CAN_L ports of the second CAN chip 5 through the second network port 4, so that a continuous and reliable signal transmission channel is formed. The structure not only effectively maintains the differential signal characteristics of the CAN bus, ensures that the signal is not disturbed in a complex electromagnetic environment, but also greatly simplifies the system wiring, reduces the overall weight of the system, and helps to improve the performance and endurance of the unmanned aerial vehicle.

[0035] In a possible implementation mode of the utility model, the standard signal port includes a PWM signal port, a UART signal port, an I2C signal port, and an SPI signal port.

[0036] The sensor assembly 7 includes a GPS module, an air pressure sensor, a temperature and humidity sensor, a gyroscope and an accelerometer, a magnetometer, and a high-definition camera.

[0037] The motor assembly 8 includes a steering engine and a motor controller.

[0038] The PWM signal port is electrically connected with the steering engine and the motor controller.

[0039] The UART signal port is electrically connected with the air pressure sensor and the temperature and humidity sensor.

[0040] The I2C signal port is electrically connected with the gyroscope and the accelerometer and the magnetometer.

[0041] The SPI signal port is electrically connected with the high-definition camera.

[0042] It should be noted that in the present embodiment, the PWM signal port is connected with the steering wheel and motor controller in the motor assembly 8, so that the flight controller 1 can control the steering angle of the steering wheel and the rotating speed of the motor through the precise PWM signal, thereby realizing the accurate attitude control and power adjustment of the unmanned aerial vehicle during flight; the UART signal port is directly connected with the air pressure sensor and the temperature and humidity sensor, and the environmental parameters are transmitted in real time, thereby providing reliable data support for the flight height and environmental adaptability adjustment; the IIC signal port is connected with the gyroscope, accelerometer and magnetometer, and the multi-master and multi-slave characteristics of the IIC bus are utilized to ensure that the key sensors can synchronously transmit the attitude, acceleration and magnetic field data, thereby providing accurate information for the dynamic balance and navigation correction of the unmanned aerial vehicle; and the SPI signal port is electrically connected with the high-definition camera, and the real-time collection and transmission of high-definition video data are realized by virtue of the advantage of high-speed data transmission of SPI, thereby effectively supporting the obstacle detection and target recognition of the unmanned aerial vehicle in the complex environment.

[0043] Based on the signal control system of the unmanned aerial vehicle, the first CAN chip 2 and the CAN signal converter are configured on the unmanned aerial vehicle, which are used for realizing the CAN communication between the flight controller 1 and the sensor assembly 7 and the motor assembly 8, wherein the CAN signal converter can convert the CAN signal into a standard signal and then communicate with the electrical equipment on the unmanned aerial vehicle, such as serial port signals, I2C signals, SPI signals, PWM signals and the like, thereby reducing the number of required wires and effectively reducing the direct interference between different signal protocols.

[0044] The preferred embodiments of the utility model are described above, and the protection scope of the utility model is not limited to the above-mentioned embodiments.

Claims

1. A signal control system of a drone, characterized by, The application relates to a flight control system, comprising: a flight controller, a first CAN chip, a network cable, a CAN signal converter, and a sensor assembly and a motor assembly; the flight controller is electrically connected with the first CAN chip, the first CAN chip is electrically connected through the network cable and the CAN signal converter, and the CAN signal converter is electrically connected with the sensor assembly and the motor assembly; wherein the CAN signal converter is configured to convert CAN signals into standard signals and then communicate with the sensor assembly and the motor assembly.

2. The signal control system of claim 1, wherein, The CAN signal converter comprises a second CAN chip, an MCU, and a second network port; wherein the second network port is electrically connected with the second CAN chip, the second CAN chip is electrically connected with the MCU, and the MCU is configured with a plurality of standard signal ports.

3. The signal control system of claim 2, wherein, The first CAN chip is configured with a first network port; wherein a first end of the network cable is electrically connected with a CAN_H port and a CAN_L port of the first CAN chip through the first network port, and a second end of the network cable is electrically connected with a CAN_H port and a CAN_L port of the second CAN chip through the second network port.

4. The signal control system of claim 3, wherein, The first network port and the second network port are RJ45 ports or RJ11 ports.

5. The signal control system of claim 2, wherein, The standard signal ports comprise PWM signal ports, UART signal ports, IIC signal ports, and SPI signal ports.

6. The signal control system of claim 5, wherein, The sensor assembly comprises a GPS module, an air pressure sensor, a temperature and humidity sensor, a gyroscope and an accelerometer, a magnetometer, and a high-definition camera; The motor assembly comprises a rudder and a motor controller; The PWM signal ports are electrically connected with the rudder and the motor controller; The UART signal ports are electrically connected with the air pressure sensor and the temperature and humidity sensor; The IIC signal ports are electrically connected with the gyroscope and the accelerometer and the magnetometer; The SPI signal ports are electrically connected with the high-definition camera.

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