基于循环队列的磁梯度张量测量数据同步技术设计  

Design of data synchronization technology of magnetic gradient tensor measurement based on circular queue

作　　者：万家佐 凌振宝[1] 王君[1] 马超[1] 李文可[1] 

机构地区：[1]吉林大学仪器科学与电气工程学院,吉林长春130061

出　　处：《传感器与微系统》2015年第7期48-49,53,共3页Transducer and Microsystem Technologies

基　　金：国家"863"重大计划资助项目(2013AA063901)

摘　　要：在磁梯度张量测量中,梯度传感器的姿态发生变化会导致所测的磁场梯度产生较大的波动,影响对异常数据的解释与反演。要利用惯导系统测得的姿态信息对传感器测量的张量数据进行校正,必须保证惯导数据与张量数据在采集时间点上严格一致,针对这一问题,设计一种软硬结合的张量梯度测量系统数据同步采集技术,在硬件方面,设计了以秒脉冲(PPS)为基准的硬件采集触发方式;在软件方面,引入了循环队列缓冲机制,对惯导数据和张量数据进行融合处理。实验结果表明:依据所叙设计方案的系统能够很好地对梯度传感器进行姿态校正。In measurement of airborne tensor magnetic,magnetic tensor gradiometer attitude change will cause the measured magnetic field gradient generate large fluctuations,influence the explanation for abnormal data and inversion. Using posture information measured by inertial navigation system for correction of tensor data,must assure inertial navigation data in strict accordance with the tensor data in collection time point,aiming at this problem,design a tensor gradient measurement system data synchronization aquisition technology,in terms of hardware,design PPS trigger mode of hardware acquisition; on the software side,introduce circular queue buffer mechanism for fusion processing of inertial datas and tensor datas. Experimental results show that the design of the system can correct attitude of gradient sensor very well.

关 键 词：磁场张量 惯导系统 数据同步 循环队列 姿态校正 

分 类 号：TH763[机械工程—仪器科学与技术]