设计弱电流测量系统并研究温度影响

IF 3.6 1区 物理与天体物理 Q1 NUCLEAR SCIENCE & TECHNOLOGY
Chu-Xiang Zhao, San-Gang Li, Rong-Rong Su, Li Yang, Ming-Zhe Liu, Qing-Yue Xue, Shan Liao, Zhi Zhou, Qing-Shan Tan, Xian-Guo Tuo, Yi Cheng
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引用次数: 0

摘要

为测量中子电离室产生的微弱电流,设计了一套专用的微弱电流测量系统。该系统采用二阶低通滤波电路和卡尔曼滤波算法,可有效滤除噪声,最大限度地减少对测量结果的干扰。在常温条件下进行的测试证明了该系统的高精度性能。不过,据观察,温度变化也会影响测量性能。我们收集了从 \(-20\) 到 \(70\;{^\circ }\{text{C}}\) 温度范围内的数据,并通过线性回归拟合建立了一个温度校正模型来解决这个问题。温度校正模型的可行性在温度为(-5)和({40}\;{^\circ }{text{C}}\)时得到了证实,应用温度校正后,相对误差保持在 0.1(\%\)以下。研究表明,所设计的测量系统具有良好的温度适应性和高精度,特别适用于测量弱电流。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Design of weak current measurement system and research on temperature impact

Design of weak current measurement system and research on temperature impact

A dedicated weak current measurement system was designed to measure the weak currents generated by the neutron ionization chamber. This system incorporates a second-order low-pass filter circuit and the Kalman filtering algorithm to effectively filter out noise and minimize interference in the measurement results. Testing conducted under normal temperature conditions has demonstrated the system’s high precision performance. However, it was observed that temperature variations can affect the measurement performance. Data were collected across temperatures ranging from \(-20\) to \(70\;{^\circ }{\text{C}}\), and a temperature correction model was established through linear regression fitting to address this issue. The feasibility of the temperature correction model was confirmed at temperatures of \(-5\) and \({40}\;{^\circ }{\text{C}}\), where relative errors remained below 0.1\(\%\) after applying the temperature correction. The research indicates that the designed measurement system exhibits excellent temperature adaptability and high precision, making it particularly suitable for measuring weak currents.

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来源期刊
Nuclear Science and Techniques
Nuclear Science and Techniques 物理-核科学技术
CiteScore
5.10
自引率
39.30%
发文量
141
审稿时长
5 months
期刊介绍: Nuclear Science and Techniques (NST) reports scientific findings, technical advances and important results in the fields of nuclear science and techniques. The aim of this periodical is to stimulate cross-fertilization of knowledge among scientists and engineers working in the fields of nuclear research. Scope covers the following subjects: • Synchrotron radiation applications, beamline technology; • Accelerator, ray technology and applications; • Nuclear chemistry, radiochemistry, radiopharmaceuticals, nuclear medicine; • Nuclear electronics and instrumentation; • Nuclear physics and interdisciplinary research; • Nuclear energy science and engineering.
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