Arduino-based dynamic displacement real-time collection system and method

Abstract

The embodiment of the invention provides an Arduino-based dynamic displacement real-time collection system and method. The system comprises an Arduino microcontroller, an MEMS (Micro Electro Mechanical System) acceleration sensor, a safety data SD (Secure Digital) memory card and an SD memory card expansion board, wherein the MEMS acceleration sensor acquires an acceleration of a to-be-measured target; the Arduino microcontroller determines a displacement of the to-be-measured target according to the acceleration of the to-be-measured target and a built-in preset displacement reconfiguration algorithm; and the displacement of the to-be-measured target is stored through the SD memory card and the SD memory card expansion board. The displacement is reconfigured through the acceleration by use of the preset displacement reconfiguration algorithm, the quadratic integral of the acceleration is not needed, the displacement of the to-be-measured target can be determined more conveniently andrapidly without depending on any initial condition, boundary condition and structural dynamic characteristic. Meanwhile, the displacement of the to-be-measured target is stored through the SD memory card and the SD memory card expansion board, thus the problem that the displacement cannot be stored in an offline manner by an existing system is solved.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of dynamic response parameter acquisition, and more specifically, to an Arduino-based real-time dynamic displacement acquisition system and method. Background technique [0002] Structural health monitoring and structural vibration control are highly dependent on the acquisition of structural dynamic response parameters, and the dynamic displacement time history is an important dynamic response parameter. For example, after strong earthquakes and strong typhoons, the maximum structural displacement is used to judge structural damage Important parameters. For structural control, real-time or quasi-real-time displacement data is often required, but it is extremely difficult to directly measure relative displacement because a fixed reference point is difficult to construct stably. Acceleration measurement is easy to obtain because it does not need to rely on a reference point, and because...

AI Technical Summary

Problems solved by technology

The steps of using the Arduino microcontroller to collect vibration and displacement are generally first to collect and store the acceleration, and then reconstruct the displacement on the computer through the post-processing program, which will lose the real-time requirement of displacement collection

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