适用于SGT320E型三轴多功能转台的多串口数据同步采集

Synchronous Multi-Serial Data acquisition for SGT320E Three-axis Turntable Platform[JZ)][HS)]

摘要:

SGT320E型三轴多功能转台是进行惯性传感器标定、惯性测量单元(IMU)和姿态航向参考系统(AHRS)性能测试的重要平台；实现三轴多功能转台和待测负载设备的测试数据同步采集,是使用三轴多功能转台面临的关键问题之一；基于同步脉冲机制,提出了转台与待测负载的数据同步输出的3种方法；在对多线程串口通讯CSerialPort类进行改进的基础上,使用Microsoft Visual Studio 2005集成开发环境,开发了多串口数据同步采集软件程序；以XSENS公司生产的MTi微型姿态航向参考系统作为待测负载设备,综合运用信号发生器、USB转多串口设备和笔记本电脑,在三轴多功能转台上开展了系统测试；在同步脉冲信号频率为10 Hz时,软件程序采集得到的4路各6 156个数据保持了严格的时间同步,这表明所提出的多串口数据同步采集方法适用于SGT320E型三轴多功能转台和待测负载设备的测试。

Abstract:

SGT320E three-axis turntable platform is widely used in the field of inertial sensors calibration and the performance testing of inertial measurement unit and attitude and heading reference system. In the application, one of the key issue is that how to achieve data synchronously from the three-axis turntable platform and the test device. Based on the synchronous pulse mechanism, three methods of synchronous data output were put forward. By improving the multithreading serial communication class CSerialPort and using Microsoft visual studio 2005 integrated development environment, application program was developed. Using MTi micro attitude heading reference system as the test device, synchronous data collection experiment was carried out on the SGT320E three-axis turntable platform together with a signal generator, a USB to serial port convert and notebook computer. Total 6156 data per channel were obtained from four serial ports by the development software at the sampling frequency of 10Hz. The total data from four channels were synchronous accurately according to the roll and pitch curves of the platform and the test device. The results indicated that the proposed synchronous serial port data acquisition method is feasible. 