A multi-serial-port router for the flight control system of an unmanned aerial vehicle

Abstract

The present invention relates to a multi-serial port router design for an integrated unmanned aerial vehicle flight control system, including: a unified power supply module, a core processor, an SPI to four serial port communication chip, a TTL to 232 signal level conversion chip, and a TTL to 422 signal circuit chip. Level conversion chip; select the communication level type of the four sub-serial ports of the SPI to four serial ports according to the level type of the external transmission signal, and select the welding TTL to 232 signal level conversion chip or TTL to 422 signal level conversion chip according to the type; The three sub-serial ports of the core processor are reserved as a TTL-level serial port backup serial port and two 232 communication-level backup serial ports; It is determined that one or more serial ports as the sending end are transmitted to other peripherals to realize the transmission mechanism of one-to-many and multi-to-one communication. The present invention can be used as a transmission drive for communication on the drone or between multiple devices on the ground.

Description

Technical field [0001] The invention relates to a multi-serial port router for an unmanned aerial vehicle flight control system integrated with inspection and shooting, which can provide an increasingly wide range of unmanned aerial vehicles with independent and reliable communication support with ground equipment. Background technique [0002] As a new type of aircraft, UAV provides the possibility of anti-impact and anti-overload design, increase flight time and range, increase take-off and landing flexibility, improve flight control maneuverability, and reduce costs and risks. Application and promotion in various fields, such as an integrated surveillance drone. Airborne equipment is also increasing. At the same time, different airborne equipment also needs to communicate with ground equipment, such as the base station and movement of differential GPS. Station, on-board flight control system and ground station control system, etc. The limited measures generally adopt independ...

AI Technical Summary

Problems solved by technology

The limited measures generally adopt the working mode of independent radio communication. The on-board equipment is equipped with independent signal level conversion modules, the communication between the on-board equipment and the ground equipment, and a pair of radio communication between a pair of equipment. While the operational requirements and precision requirements of drones are increasing, the increase of these auxiliary equipment has brought a negative effect on the "small, fast, and flexible" characteristics of drones, and the communication inspection of equipment is also very cumbersome.

Based on the characteristics of the portable work of the UAV, the present invention proposes a multi-serial port communication router design for the UAV flight control system, which can solve the communication problem between the on-board equipment or with the ground equipment. , The principle of complete function set can meet the needs of different signal level conversion and communication, greatly reducing the quality of UAV auxiliary equipment

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