【摘要】 激光干涉绝对重力仪是直接测量地球重力场重力加速度绝对值的精密仪器，其中隔振系统的零点漂移是影响仪器长期稳定运行的关键技术环节。基于STM32单片机加调零电机机构，提出一种可实现激光干涉绝对重力仪隔振系统零点自动调节的技术方案。在实际测量过程中，STM32单片机通过USB接口与上位机通信，实时获取隔振系统零点位置，通过两路继电器驱动电路控制调零电机正反转，从而实现对隔振系统的零点控制，并与Tide型激光干涉绝对重力仪完成联合调试。实测结果表明，该系统通过对隔振系统零点位置的自动调节，可保证绝对重力仪长期、稳定地进行测点绝对重力值的高精度测量，整机连续测量20天，测量数据准确度优于10μGal，精度优于10μGal，为仪器开展台站连续观测提供了技术保障。更多还原

【Abstract】 Laser interferometric absolute gravimeter is a precision instrument that directly measures the absolute value of gravity acceleration in the Earth’s gravity field. The zero drift of the isolation system is a key technical link that affects the long-term stable operation of the instrument. This article proposes a technical scheme for automatic zero adjustment of the isolation system of the laser interferometric absolute gravimeter based on the STM32 microcontroller and the zeroadjustment motor mechanism. In the actual measurement process of the absolute gravimeter, the STM32 microcontroller communicates with the upper computer via a USB interface to obtain the zero-point position of the isolation system in real-time. Through two relay drive circuits,the zero-adjustment motor is controlled to achieve zero-point control of the isolation system through forward and reverse rotation, and joint debugging is completed with the Tide type laser interferometric absolute gravimeter. The actual test results show that the system ensures the longterm and stable high-precision measurement of absolute gravity values at measurement points by automatically adjusting the zero position of the isolation system. The continuous measurement time of the entire machine is 20 days, and the accuracy of the measurement data is better than 10 μGal, with an accuracy better than 10 μGal. This provides technical support for the instrument to carry out continuous observation at stations.更多还原