地震仪不仅可以测量地球(乃至月球及其它星球)的震动,而且也可测量机械振动与工程振动。随着地球物理学、地震学、工程力学等学科研究的不断深入与发展,要求测震仪具有宽频带、大动态范围的性能及具有小型、轻巧、灵活的特点。目前,由于国内外电子器件性能不断在改善、质量在提高,故将电子反馈技术用于地震计中来改进现有地震观测仪器的 Seismometers not only measure the vibrations of the Earth (and even the Moon and other planets), but also measure mechanical and engineering vibrations. With the continuous deepening and development of disciplines such as geophysics, seismology and engineering mechanics, it is required that the seismometer should have the characteristics of wide band, large dynamic range, small size, light weight and flexibility. At present, as the performance of electronic devices at home and abroad is constantly improving and the quality is improving, electronic feedback technology is used in seismometers to improve the performance of existing seismic observation instruments