CAJ | 학술논문

针对地球物理勘探中高精度磁场测量以及远距离数据同步的需求,本文基于低温超导量子干涉仪和图形化系统开发平台构建了一种可通过GPS同步的新型磁力仪,并可采用简便的直读方式进行磁场测量.首先介绍了新型低温超导磁力仪的工作原理,并重点阐述了由其程控直读电路以及软硬件设计方案;然后在分析影响超导磁力仪数据同步因素的基础上,给出了GPS同步实现及其同步精度标定的方法;最后在良好的磁屏蔽环境中对超导磁力仪的性能以及电磁兼容进行了评估,并对影响其同步的相关因素进行了测试和标定,试验表明传感器的本底噪声约为6 fT/ Hz@1 kHz,数据同步精度可达1 ms,满足实用要求.
침대지구물리감탐중고정도자장측량이급원거리수거동보적수구,본문기우저온초도양자간섭의화도형화계통개발평태구건료일충가통과GPS동보적신형자력의,병가채용간편적직독방식진행자장측량.수선개소료신형저온초도자력의적공작원리,병중점천술료유기정공직독전로이급연경건설계방안;연후재분석영향초도자력의수거동보인소적기출상,급출료GPS동보실현급기동보정도표정적방법;최후재량호적자병폐배경중대초도자력의적성능이급전자겸용진행료평고,병대영향기동보적상관인소진행료측시화표정,시험표명전감기적본저조성약위6 fT/ Hz@1 kHz,수거동보정도가체1 ms,만족실용요구.
To meet the requirements of high precision magnetic field measurement and remote data synchronization in geophysical exploration,this paper presents a novel magnetometer based on low-temperature Superconducting QUantum Interference Device(SQUID)and graphical system development platform,which can be used to measure magnetic field in a simple direct readout way and synchronized with GPS. First of all,this paper introduces the work-ing principle and the programmable direct readout circuit of the novel SQUID magnetometer,and then focuses on its hardware and software design. Secondly,the paper gives the methods of GPS synchronization and synchronization accuracy calibration after completing the analysis of SQUID magnetometer data synchronization factors. Finally ,sev-eral trials have been done to assess the main performance and Electro Magnetic Compatibility(EMC)of the novel su-perconducting magnetometer,and calibrated related factors affecting its data synchronization. The results show that the magnetometer background noise is about 6 fT/ Hz@1 kHz,and its data synchronization accuracy is better than 1 ms,well positioned to meet the practical requirements.