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基于MEMS的数字压力传感器在竖向位移测量中的应用在竖向位移测量中的应用

DOI: 10.3969/j.issn.1674-0696.2015.04.04, PP. 20-27

Keywords: 桥梁工程,MEMS竖向位移传感器系统,封闭式差压连通管,竖向位移测量,bridgeengineering,MEMSverticaldisplacementsensorsystem,closeddifferentialpressureconnectingpipe,verticaldisplacementmeasurement

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Abstract:

:？为实现结构竖向位移的便捷、高精度、远程实时测量，开发了一种基于连通管技术和MEMS技术的结构竖向位移测量系统，阐述了封闭差压连通管式位移测量原理及测试模块的实现。重点从稳定性、可靠性角度分析了封闭差压连通管式位移传感器的应用性能，并进行了试验验证。试验结果表明：该位移测量技术及其设备具有优于0.1mm的竖向位移测量分辨率和较高的灵敏度，长期稳定性0.3mm，能够满足日常工程测量和在线长期监测项目中的竖向位移测量需求。在桥梁静载试验时的主梁挠度测量中实际应用验证了该系统具有实时测量、布设及操作便捷、低成本等优点。

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