Research on vibration characteristics measurement and analysis methods based on microelectromechanical system sensors

With the continuous advancement of high-density space launch missions, the vibration phenomenon generated during launch has gradually attracted attention. Research has found that most of these vibrations can have varying degrees of impact on towers and satellite rocket bodies. This paper proposes a vibration measurement method based on domestic Microelectromechanical System (MEMS) acceleration sensors for vibration characteristics related to structural mechanics such as large vibration impact, wide spectrum range, and low amplitude and frequency of vibration signals in the active section of the rocket launch during the actual launch process of a certain satellite launch site. This method is used for real time acceleration detection of X-axis, Y-axis, and Z-axis vibrations, uses MEMS sensors to collect vibration signals, completes the display of acceleration amplitude through a series of processes such as low-pass filtering, analog-to-digital A/D conversion, data acquisition and analysis. And through software simulation and hardware circuit testing, the feasibility of the scheme design and the reliability of the vibration measurement system were verified, providing solutions and technical support for the subsequent development and transformation of the launch site.