摘要
针对飞行测试与航空发动机试验中传感器数据采集规模庞大、时间同步精度要求极高的问题,设计并实现了一种基于网络化传感器的同步采集系统。该系统采用总线型网络架构,融合了节点内基于共享时钟的统一触发机制与基于IEEE 1588的跨节点高精度时间同步技术,实现了多层级、高精度的数据同步,通过在总线型网络中集成基于IEEE 1588的增强型时间同步算法,在全网实现了纳秒级同步精度。然后结合增强型时间同步算法,在整个网络范围内达到了纳秒级同步精度。通过OMNeT++仿真和FPGA硬件测试验证,结果表明该方案在大规模分布式传感网络中依然具备优异的同步采集性能,可满足飞行测试中对微秒级同步采集的严苛要求。本研究为构建高可靠性、多层级大规模传感系统提供了理论依据和实践路径。
In view of the large-scale sensor data collection and extremely high time synchronization accuracy requirements in flight tests and aero-engine tests,this paper designs and implements a synchronous acquisition system based on networked sensors.The system utilizes a bus-based network architecture,integrating a unified trigger mechanism within nodes based on a shared clock with high-precision time synchronization across nodes based on IEEE 1588.This enables multi-level,high-precision data synchronization.By integrating an enhanced time synchronization algorithm based on IEEE 1588 into the bus-based network,nanosecond-level synchronization accuracy is achieved across the entire network.Combined with the enhanced time synchronization algorithm,nanosecond-level synchronization accuracy is achieved across the entire network.Through OMNeT++simulation and FPGA hardware test verification,the results show that the scheme still has excellent synchronous acquisition performance in large-scale distributed sensor networks,and can meet the stringent requirements for microsecond-level synchronous acquisition in flight tests.This study provides a theoretical basis and a practical path for constructing a highly reliable,multilevel large-scale sensing system.
作者
谷士鹏
喻天翔
尹川
张磊
Gu Shipeng;Yu Tianxiang;Yin Chuan;Zhang Lei(School of Aeronautics,Northwestern Polytechnical University,Xi′an 710072,China;Chinese Flight Test Establishment,Xi′an 710089,China)
出处
《电子测量技术》
北大核心
2025年第24期80-88,共9页
Electronic Measurement Technology
关键词
同步采集
时间同步
数据采集
OMNET++
synchronous acquisition
time synchronization
data acquisition
OMNeT++
