轨道动静结合快速检测多源数据采集模块设计  

Design of multi-source data acquisition module for rapid detection of track dynamics and statics

作　　者：陈小宇[1] 汪歆 武瑞宏[2] 任晓春[2] 邓川[2] Chen Xiaoyu;Wang Xin;Wu Ruihong;Ren Xiaochun;Deng Chuan(College of Physical Science and Technology,Central China Normal University,Wuhan 430079,China;China Railway First Survey and Design Institute Group Co.,Ltd.,Xi′an 710043,China)

机构地区：[1]华中师范大学物理科学与技术学院,湖北武汉430079 [2]中铁第一勘察设计院集团有限公司,陕西西安710043

出　　处：《电子技术应用》2021年第7期111-117,124,共8页Application of Electronic Technique

摘　　要：多源异构数据的高精度同步采集是轨道动静结合快速检测系统中的关键技术。设计了一套轨道动静结合快速检测多源数据采集模块,该模块以Xilinx公司的Artix-7系列FPGA为主控芯片,以英伟达TX2高性能计算机为核心数据处理单元,利用高稳晶振、结合GPS输出的PPS脉冲和NEMA数据建立高精度时间基准,通过控制AD采样频率实现位移传感器、温度传感器、激光位移传感器等多传感器数据的高精度实时同步采集。该模块体积小、成本低。测试表明,该模块可实现多传感器数据高精度同步采集,同步精度达微秒级。The high-precision synchronous collection of multi-source heterogeneous data is a key technology in the rapid detection system of combined track motion and static.In this paper,a set of track dynamic and static combined rapid detection multi-source data acquisition module is designed.This module uses Xilinx′s Artix-7 series FPGA as the main control chip,NVIDIA TX2 high-performance computer as the core data processing unit,and uses high-stability crystal oscillators and PPS pulse and NEMA data output by GPS establish a high-precision time reference,and realize high-precision real-time synchronous collection of multi-sensor data such as displacement sensors,temperature sensors,and laser displacement sensors by controlling AD sampling frequency.The module is small in size and low in cost.Tests show that the module can achieve high-precision synchronous collection of multi-sensor data,with a synchronization accuracy of microseconds.

关 键 词：轨道检测 多传感器集成 同步采集 现场可编程门阵列 

分 类 号：TN709[电子电信—电路与系统]