This paper proposes an innovative smartphone‐based strain sensing method (named MaxCpture) for measuring maximum peak tensile and compressive strains. The MaxCpture method is able to record the maximum peak strain of a structure without continuous power supply and real‐time monitoring. This method combines the maximum peak strain sensor, a smartphone, and the microimage sensing algorithm. Crucially, the novel clamping sensitive mechanism in the sensor preserves information about the maximum deformation of the structure. To validate the feasibility of the MaxCpture method, this study conducted a series of experiments, including static tests, the beam of constant strength tests, and dynamic tests. The results show that the MaxCpture method is able to measure the maximum peak tensile and compressive strain effectively. With its convenient acquisition, low cost, and multi‐user collaboration, the MaxCpture method provides a promising approach for seismic response detection of various engineering structures.

中文翻译：

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基于智能手机的最大峰值拉伸和压缩应变测量方法

本文提出了一种基于智能手机的创新应变传感方法（称为 MaxCpture），用于测量最大峰值拉伸和压缩应变。 MaxCpture方法能够在无需持续供电和实时监控的情况下记录结构的最大峰值应变。该方法结合了最大峰值应变传感器、智能手机和微图像传感算法。至关重要的是，传感器中的新型夹紧敏感机构保留了有关结构最大变形的信息。为了验证MaxCpture方法的可行性，本研究进行了一系列实验，包括静态试验、梁的恒强度试验和动态试验。结果表明，MaxCpture方法能够有效测量最大峰值拉应变和压应变。 MaxCpture方法以其获取方便、成本低廉和多用户协作等特点，为各种工程结构的地震响应检测提供了一种有前途的方法。