基于ADS8568的八路数据采集系统设计

发布时间：2018-01-01 10:31

本文关键词：基于ADS8568的八路数据采集系统设计　出处：《传感技术学报》2016年01期 　论文类型：期刊论文

更多相关文章： 惯性导航 数据采集 ADS FPGA

【摘要】：为了提高某惯性测量单元的精度,需对其输出信号进行大量采集以建立误差模型。该惯性测量单元不仅包含6路惯性传感器信号(3路陀螺和3路加速度计),还包括两路温度传感器输出以提供温度补偿,所以设计了基于ADS8568的八路数据采集系统。该系统采用AD芯片ADS8568,实现8路模拟信号的同步采集;以FPGA为主控芯片,控制信号的采集存储;以8G bit FLASH为存储芯片,实现大容量数据的实时存储。经实验验证,该采集系统可以正确采集传感器输出数据,采集到的数据正确有效,可用于误差建模的分析,具有一定的工程实用价值。
[Abstract]:In order to improve the accuracy of an inertial measurement unit, it is necessary to collect a large number of its output signals to set up an error model. The inertial measurement unit not only includes six inertial sensor signals, three gyroscopes and three accelerometers]. It also includes two channels of temperature sensor output to provide temperature compensation, so an eight-channel data acquisition system based on ADS8568 is designed. The system uses AD chip ADS8568. The synchronous acquisition of 8 analog signals is realized. With FPGA as the main control chip, the acquisition and storage of the control signal is carried out. Taking 8G bit FLASH as the memory chip, the real-time storage of large capacity data is realized. The experimental results show that the system can correctly collect the sensor output data, and the collected data is correct and effective. It can be used in the analysis of error modeling and has certain engineering practical value.
【作者单位】：中北大学电子测试技术国防科技重点实验室;中北大学仪器科学与动态测试教育部重点实验室;
【基金】：武器装备探索研究项目(7131017)
【分类号】：TP274.2
【正文快照】： 微惯性测量单元(MIMU),具有体积小,质量轻,可靠性高,价格低等优点,在军工,航天,民用等领域具有越来越广泛的应用[1-3]。微惯性测量单元包括微机械陀螺仪和微加速度计。其中微机械陀螺仪的零位和标度因数易受温度影响[4-5],为了减小测量误差,提高系统测量精度,一般会采用两种方

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