Research and design of high precision synchronization data acquisition system

ZHU Xiaohui; TAN Songqing; LI Rui

doi:10.11889/j.0253-3219.2014.hjs.37.110101

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Research and design of high precision synchronization data acquisition system

更新时间：2021-03-03

- Research and design of high precision synchronization data acquisition system
- NUCLEAR TECHNIQUES Vol. 37, Issue 11, Article number: 110101(2014)
- 作者机构：
  
  1. 中国科学院上海应用物理研究所嘉定园区,上海,201800
  2. 中国科学院大学,北京,100049
- 作者简介：
- 基金信息：
- DOI：10.11889/j.0253-3219.2014.hjs.37.110101
  CLC：
- Published：07 November 2014
- 稿件说明：
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ZHU Xiaohui, TAN Songqing, LI Rui. Research and design of high precision synchronization data acquisition system[J]. Nuclear techniques, 2014, 37(11): 110101
DOI：

ZHU Xiaohui, TAN Songqing, LI Rui. Research and design of high precision synchronization data acquisition system[J]. Nuclear techniques, 2014, 37(11): 110101 DOI： 10.11889/j.0253-3219.2014.hjs.37.110101.

摘要

在磁铁电源研制等多种应用场合需同步测量多个信号，同时要求测量数据要有较高的精度。利用高精度模数转换器AD7960实现高精度数据获取，使用可编程门阵列(Field-Programmable Gate Array

FPGA)进行逻辑控制实现同步触发控制，研制出了高分辨率同步数据获取系统。分别针对高精度和同步性能进行测试和分析，得出系统的实际有效分辨率高于18位，并验证了系统能够实现高性能的同步数据采集。结合实际应用，进一步验证了系统的性能优势。

Abstract

Background: Shanghai Synchrotron Radiation Facility (SSRF) is an advanced third-generation synchrotron radiation electron accelerator. The synchrotron radiation devices require the magnets and magnet power supply of high performance

such as high precision and high stability. In the design of a magnet and a magnet power supply

the flux and current signals is required to be measured simultaneously. Purpose: In order to simultaneously measure the two signals with high precision

a high precision synchronization data acquisition system should be designed and implemented. Methods: An 18-bits

5 MSPS analog to digital converter of AD7960 is used to realize the high precision data acquisition. The synchronizing trigger signal is produced by Field-Programmable Gate Array (FPGA)

which is used to generate the control logic. Results: After the test of effective precision of Analog Digital Converter (ADC) and the synchronization performance

it is resulted that the effective precision of this system is better than 18 bits

and the performance of synchronization is great. Conclusion: The system proposed in this paper satisfies requirements of high precision synchronization data acquisition for SSRF. Abstract

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