多传感器动态参数实时采集与存储方法研究

发布时间：2018-04-26 19:26

本文选题：可编程逻辑器件 + 双FIFO　；参考：《液晶与显示》2017年05期

【摘要】：针对现有的数据采集系统无法兼备通道数多、速度快、实时存储的问题,提出一种基于可编程逻辑器件和大容量Flash的多传感器动态参数实时采集与存储方法。该系统以FPGA为主控制器,实现对模数转换芯片的控制与读取时序;转换后添加校验字节,通过双FIFO缓存方式实现和Flash的高效率数据交互;双Flash实现采集数据备份,增加存储可靠性;双Flash之间总线相互独立,提高数据存储速度;最后通过USB接口实现与上位机的高速数据传递。实验证明:该系统的单通道采样速率可达2MHz,实时存储速率单片Flash可达50MByte/s字节,双片可达100MByte/s,在强振动动态测试环境下,能够可靠地采集传感器的输出信号,采集绝对误差在1 mV以内,数据无误码率。满足振动测量的稳定可靠、精度高、抗干扰能力强等要求。
[Abstract]:In order to solve the problem that the existing data acquisition system can not have many channels, high speed and real time storage, a real-time multi-sensor dynamic parameter acquisition and storage method based on programmable logic device and large capacity Flash is proposed. The system uses FPGA as the main controller to realize the control and reading timing of A / D conversion chip; add the check bytes after conversion, and realize the high efficiency data interaction with Flash through double FIFO buffer; double Flash to realize the data backup, The storage reliability is increased, the bus between the two Flash is independent, and the data storage speed is improved. Finally, the high-speed data transfer between the two Flash and the host computer is realized through the USB interface. The experimental results show that the single channel sampling rate of the system can reach 2 MHz, the real time storage rate of a single Flash can reach 50MByte/s bytes, and the double chip can reach 100 MByte / s. Under the strong vibration dynamic test environment, the output signals of the sensor can be collected reliably. The absolute error of data acquisition is less than 1 MV, and the error rate of data is zero. It can meet the requirements of stable and reliable vibration measurement, high precision and strong anti-interference ability.
【作者单位】：苏州科技大学;白城兵器试验中心;中国科学院长春光学精密机械与物理研究所;
【基金】：江苏省普通高校研究生科研创新计划项目(No.KYZZ16_0480) 苏州科技大学研究生创新项目(No.SKCX16_043) 江苏省建设系统科技项目(No.2016ZD87) 苏州市科技发展计划(重点实验室)项目(No.SZS201609)~~
【分类号】：TP274.2

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