联合GNSS的分布式传感器数据同步采集方法研究  

Research on Distributed Sensor Data Synchronization Collection Method Based on GNSS

作　　者：丁华泽 胡育昱[1] 魏智[1] 纪立 Ding Huaze;Hu Yuyu;Wei Zhi;Ji Li(Shanghai Institute of Microsystem and Information Technology,Chinese Academy of Sciences,Shanghai 200050,China)

机构地区：[1]中国科学院上海微系统与信息技术研究所,上海200050

出　　处：《单片机与嵌入式系统应用》2021年第3期42-46,共5页Microcontrollers & Embedded Systems

基　　金：中科院重点部署项目—铁路极端复杂环境下的综合信息服务技术研究(KFZD-SW-431)。

摘　　要：感知数据时间维度上的一致性是多源数据融合模型科学性保障的关键参数之一,本文面向铁路沿线地质灾害监测场景内多传感器数据融合应用中时间参数一致性的具体需求,提出联合GNSS构建时间高度统一的分布式传感器数据同步采集方法。在基于GNSS模块实现秒级时间定位和微秒级时间测量基础上,构建基于GNSS脉冲信号驱动下的数据同步采集机制,确保信号采集与GNSS卫星内置原子钟时间的高度一致性。实验结果表明,本文提出的数据采集方法可确保多源感知数据时间统一性,为地质灾害预测系统决策科学性的提升奠定基础。Consistency in the time dimension of sensing data is one of the key parameters of the multi-source data fusion model.In order to improve the time consistency of sensing data for geological disaster monitoring along the railway,a sensor data synchronization collection method is proposed based on GNSS.First of all,this paper achieves the second-level time measurement based on the message output by the GNSS module,and the microsecond-level time measurement based on the pulse signals generated by the GNSS module which is synchronized with the time of the built-in atomic clock of GNSS satellites.Then,a data synchronization collection mechanism driven by GNSS pulse signals is proposed to ensure the time of sensing data is synchronize with the built-in atomic clock of GNSS satellites.Finally,the experiment results show that the data collection method proposed in the paper can ensure the time unity of sensing data and lay a foundation for the improvement of the scientificity of the geological disaster prediction system.

关 键 词：同步采集 数据采集 卫星导航系统 时间测量 地质灾害监测 震动监测 STM32H750VB 

分 类 号：TN971[电子电信—信号与信息处理]