地震地磁观测与研究2025，Vol.46Issue(2)：147-155,9.DOI:10.3969/j.issn.1003-3246.2025.02.017
基于STM32的激光干涉绝对重力仪自动调零系统设计
Design of an automatic zeroing system for the laser interferometer absolute gravimeter based on STM32
李子路 1吴琼 1张旸1
作者信息
- 1. 中国北京 100081 中国地震局地球物理研究所
- 折叠
摘要
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 zero-adjustment 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 long-term 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.关键词
STM32单片机/继电器/隔振/激光干涉绝对重力仪Key words
STM32 microcontroller/relay/vibration isolation/laser interferometric absolute gravimeter引用本文复制引用
李子路,吴琼,张旸..基于STM32的激光干涉绝对重力仪自动调零系统设计[J].地震地磁观测与研究,2025,46(2):147-155,9.
