In the "2016-22020 Chinese Consumer Unmantest Investment Report" mentioned in the Office of Investment and Investment Prospects, the automatic driver is a flight control system that helps manipulators to achieve established flight targets. It includes software control algorithms and hardware platforms, on traditional missiles and fighters, all equipped with automatic driver devices, but complex, difficult. The outbreak of the automatic driver built by the drone flying into the usual people or relying on the open source flying control platform.
Speaking of open source, the flight control open source is different from Linux, GNU and other open source software systems, the latter through the maintenance of the open source community, through the openness of joint development, joint application, so that the software system has achieved the most sufficient application and development. However, it was initially promoted the consumer-free drone into the blowout period, but it was a set of open source hardware systems.
First, open source flying control venue: Arduino-APM-PX4 / PIXHAWK
Arduino is a well-known drone product in the industry. It is a convenient and easy to open source electronic prototype platform, including hardware (all models of Arduino board) and software development environment (Arduinoid), due to the development of the development is to help students Construct a simple and practical software and hardware development environment, but because of the way to use open source sharing, the software cost is "0", the hardware cost is also very low in mass production, so the threshold of the Arduino platform is very low. Generally I only need 100 yuan in a base development kit online. The Arduino system generally includes a master MCU, and some related applications of sensors, an actuator, and it is easy to be applied to teaching projects such as small electrical automation experiments or DIY electronic applications for enthusiasts.
Arduino, no matter whether it is technically still cost, it has greatly reduced the threshold for flying control software algorithm, and in addition to providing a complete set of hardware platforms to achieve algorithms, open source communities also gather flying enthusiasts together. To promote technological progress. So we see that there is a large number of flight control system applications based on Arduino's hardware and software system platforms.
APM (Ardupilotmega) is a flying control product launched by DIY drone community in 2007, which is the most mature open source hardware project. APM is based on Arduino's open source platform, which has improved multiple hardware, including accelerometers, gyroscope and magnetometer combined inertial measuring unit (IMU). Due to good availability of APM, APM spreads quickly in the global model enthusiasts. By open source software MissionPlanner, developers can configure the settings of the APM, accept and display the data of the sensor, using GoogleMap to complete automatic driving.
At present, APM flying control has become a benchmark of open source flying control, supports unmanned equipment such as multi-rotor, fixed wings, helicopters, and driverless cars. For the multi-rotation, APM flying control supports various four, six, eight-axis products, and can be capped after the external GPS sensor can be stabilized, and complete the autonomous landing, self-directed route, home, high, fixed point and other abundant flights model. APM can connect an external ultrasonic sensor and a light-current sensor to achieve high and fixed-point flights in the room.
PX4 & Pixhawkpx4 is a hardware and software open source project (complied with the BSD protocol), with an aim of providing a low cost, high-performance high-end self-service for academics, hobbies and industrial groups. The PX4 group in 2014 was jointly received by the 3DROBOTICS Union APM Group in 2014, which is the upgrade version of the PX4 flight control, with PX4 and APM two firmware and corresponding ground station software. The flight control is currently the highest hardware specifications in the world's flight control products, as well as the most hot products in the hands of the current enthusiasts. Pixhawk has 168 MHz operational frequency, and breakthroughs with the Cortex-M4 of the integrated hardware floating point operations as a master chip, built-in two sets of gyro and accelerometers MEMS sensors, complementary corrections, built-in three-axis magnetic field sensors And can be externally coupled, while connecting one of the two GPS sensors, automatically switches at the time of failure.
Second, open source flying control and low technology threshold, shorten the development cycle
CIC Advisor in "2016-2020 Chinese consumer-free drone industry depth research and investment prospects forecast report
"In mentioned that the open source flying control system under the development and maintenance of the agency, the development and maintenance of institutions, the system tends to be improved. Moreover, the development and maintenance of open source systems is based on open development platforms such as GoogleCode, Github. Developers usually maintain a detailed specific documentation in order to ensure the smooth progress of remote collaboration, which is also a prominent feature of open source flight control system. That is, the development instruction document of the entire flying control system is very detailed. It is very suitable for newbie learning, understanding, or dual development based on existing flying control systems.
Open source flying control and other open source flying controls with improved power and related technical support, the development of drone product lines has paved the road. A large number of practices have shown that a master's degree from an electronic or automated professional, even undergraduate enthusiasts, or related professional practitioners, can develop a functionally prepared drone sample in a short period of time. This is also a technical foundation for the blowout phenomenon.
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