一种用于船舶气象仪的电子罗盘设计

本文以三轴电子罗盘测量基本原理和计算方法为基准,以XMEGA128A1微处理器、内部集成三轴加速度分量和三轴地磁场分量输出的集成芯片LSM303C为硬件电路核心,利用三轴加速度分量计算俯仰角、横滚角补偿电子罗盘的测量方式,运用CORDIC算法实现在微处理器XMEGA128A1上对罗盘进行倾角补偿计算,获得准确的方位角。实验结果表明,此方法设计的电子罗盘精度高、响应快,体积小,能较好为船舶气象设备提供准确的方位角信息。

Electronic compass design for ship meteorological instrument

This paper is based on the triaxial electronic compass measurement principle and calculation method as a benchmark, using XMEGA128A1 microprocessors, internal integration triaxial acceleration and integrated triaxial magnetic field output chip LSM303C as hardware circuit core. Calculating pitch angle and roll angle compensation electronic compass by using three axis acceleration output data, apply CORDIC algorithm to implement angle compensation calculation for compass on the microprocessor XMEGA128A1 , obtain accurate azimuth.The experimental results show that, this method is used to design the electronic compass of high precision, fast response, small volume, can provide accurate azimuth information for Ship meteorological equipment.