基于DSP高速外扩FLASH的高精度数据采集系统

摘要

为了满足微固体模态陀螺对数据进行数字处理需要的大量的高精度数据的要求,设计了一种高精度大容量数据采集系统.该系统包括控制单元即DSP芯片TMS320F2812、高精度数据转换芯片AD7656以及大容量数据存储FLASH芯片K9F1G08UOB.该系统已经进行了阶段模拟测试,测试结果显示精度达到10-3 mV数量级,可以满足系统需求,为后续数据处理以及分析提供了宝贵的数据材料.%In order to achieve requirements of the piezoelectric micromachined modal gyroscope's digital signal processing-high-precision and mass data storage, a high-precision, large-capacity data acquisition system was designed. The system consists of three modules,the Control unit-TMS320F2812,high-precision data conversion chip AD7656 and high-capacity data storage chip K9F1G08U0B. The system has been tested, and the testing results show the system accuracy can reach 10-3mV magnitude which can reach the need of the system,so it can provide valuable data for subsequent data processing and analysis.