The system of MEMS sensors data streaming and signal quality analysis

Computer Applications in Electrical Engineering Pub Date : 2016-01-01 DOI:10.21008/J.1508-4248.2016.0028

B. Fabianski, Krzysztof Nowopolski, Bartlomiej Wicher

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Abstract

In the article, a dedicated testing environment for MEMS sensors is presented. The system serve real–time measurements from several, different interfaced sensors, what gives opportunity to collect the data and – furthermore – its off–line analysis. To complete the main challenge what is MEMS ICs integration in one platform, a special hardware layer is applied together with operational algorithms. Two low–level boards are connected to the embedded server by RS–485 lines. This data server translates RS–485 signals and communicates with dedicated PC program by an Ethernet interface. Such a solution made possible to parallel streaming, archive, and analyze of data in a convenient way. The architecture and operational algorithms of individual components, such as complex synchronization methods in the data streaming process is described. Proper system design is verified by presenting selected signal waveforms grabbed in an experimental tests. In the end introduced two signal quality indicators resulting in comparison of different MEMS ICs. Summary table of computed indicators is shown with its analysis.

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系统实现了MEMS传感器的数据流和信号质量分析

本文介绍了一种MEMS传感器专用测试环境。该系统提供来自多个不同接口传感器的实时测量，从而有机会收集数据并进一步进行离线分析。为了完成在一个平台上集成MEMS ic的主要挑战，一个特殊的硬件层与操作算法一起应用。两个底层板通过RS-485线连接到嵌入式服务器。该数据服务器对RS-485信号进行转换，并通过以太网接口与专用PC程序通信。这样的解决方案使得以一种方便的方式对数据进行并行流、存档和分析成为可能。描述了各个组件的体系结构和操作算法，如数据流过程中的复杂同步方法。通过在实验测试中截取的信号波形，验证了系统设计的正确性。最后介绍了两种信号质量指标，从而对不同的MEMS集成电路进行了比较。给出了计算指标汇总表并对其进行了分析。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Computer Applications in Electrical Engineering

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