FPGA与ARM的无人机陀螺仪数据接口设计

Design of data interface between FPGA and ARM gyroscope

在无人机系统与地面站通信过程中,机载陀螺仪姿态数据的高速产生与外部相对低速的无线数据模块传输的矛盾日益突出,严重制约着无人机的发展。针对这一问题,采用FPGA FIFO作为高速数据缓冲,提出一种基于FPGA内建FIFO的无人机陀螺仪前级通信接口。通过高速异步FIFO缓冲,将无人机陀螺仪姿态数据经由FPGA准确无误地发送给地面站,显著提高数据传输质量,实现了高速芯片与低速设备之间的通信。整个设计在实际应用中效果良好,数据稳定可靠,满足了低误码率与高稳定性的要求,以及无人机与地面站高速通信的需求,有着广阔的市场应用前景。

During the process of communication between UAV and ground station, conflietion between high speed on board gyroscope and low speed external wireless data transmission module is increasingly serious. It is badly restricting the development of UVA. Inorder to solve this problem, this paper uses high-speed FIFO as data buffer, building up an interface of the UVA gyroscope which is based on the FPGA FIFO. Gyroscope data is transferred accurately to ground station via high-speed FIFO which is built in FPGA. By this way,we highly improve the quality of data transmission, and achieve the communication between high- speed chips and low-speed equipments. The design works perfectly in pratieal application, and the data is stable and reliable with low error rate and high stabe rate. The whole plan meets the communication demand between UAV and ground station.