摘要
高精度磁场测量模块主要用于地质、地球物理、国防等科学领域。现有的三分量磁场测量模块存在便携性差(需要连接PC交互)、本底噪声水平高、续航时间短等不足。针对现有磁场测量模块的不足,对便携式三分量磁场测量模块进行研发,研制了高精度数据模块,开发了Android手机端控制程序,并进行了性能指标测试。测量模块支持Android手机端交互,具有本底噪声水平低(动态范围>121dB@fs=1000 Hz)、同步精度高(时间漂移±0.87 ms/day)、续航时间长(可连续工作一周)、扩展性强(支持多种磁通门传感器)的特点。便携式三分量磁场测量模块设计便携、简单易用,适合野外测试使用。
The high-precision magnetic field measurement module is mainly used in the scientific fields such as geology,geophysics,and national defense.However,the existing three-component magnetic field measurement module suffers poor portability(requiring a PC for data acquisition),large background noise,and short operating time.Therefore,this study developed a portable three-component magnetic field measurement module:a high-precision data measurement module and an Android control program.The test results show that the measurement module supports the interactive control using Android mobile phones and enjoys the advantages of low background noise(dynamic range>121dB@fs=1,000Hz),high clock synchronization precision(time drift±0.87 ms/day),long operating time(for one-week continuous work),and high scalability(supporting multiple fluxgate sensors).Portable three-component magnetic field mesurement module is portable,simpk and easy to use,suitable for field testing.
作者
王旭
陈凯
芦勇健
尹曜田
WANG Xu;CHEN Kai;LU Yong-Jian;YIN Yao-Tian(School of Geophysics and Information Technology,China University of Geosciences,Beijing 100083,China;Qilu Aerospace Information Research Institute,Jinan 250000,China)
出处
《物探与化探》
CAS
北大核心
2022年第6期1528-1533,共6页
Geophysical and Geochemical Exploration
基金
国家自然科学基金项目“海底MT的运动海水电磁噪声分离方法研究”(41804071)。
关键词
低功耗
低噪声
时钟同步
low power consumption
low noise
clock synchronization
