光纤光栅式液压动态称重系统的研究
文献类型：学位论文
| 作者 | 杨熙春 |
| 学位类别 | 硕士 |
| 答辩日期 | 2007 |
| 授予单位 | 中国科学院上海光学精密机械研究所 |
| 导师 | 向世清 |
| 关键词 | 光纤光栅 液压传动 动态称重 匹配解调 |
| 其他题名 | Study on weigh-in-motion system based on fiber Bragg grating and hydraulic technology |
| 中文摘要 | 在调研动态称重技术的发展历程和分析现有技术的缺陷和不足的基础上，提出了一种基于液压传动技术和光纤光栅压强传感技术相结合的新型车辆动态称重技术。本文着重对光纤光栅式液压传感器进行了理论分析和系统设计，完成了光纤光栅式液压传感器的初始样机，并进行了静态载荷实验，获得了良好的效果。 本文所做的工作主要包括以下几个方面： 1. 调研和分析了现有的光纤式动态称重技术（光纤偏振式、多模光纤式、光纤干涉式和光纤光栅式动态称重技术），针对上述技术中存在的缺陷和不足，提出了一种基于液压传动技术和光纤光栅压强传感技术相结合的新型车辆动态称重技术方案。在此基础上，本文提出了一套动态称重的完整配置方案并介绍了各功能模块的具体作用及这套系统的工作流程。 2. 详细介绍了称重传感头的两个组成部分——液压软管阵列受力机构和金属膜片光纤光栅压强传感头的结构原理及具体设计方案。该动态称重技术在弥补现有光纤光栅式动态称重技术轮胎载荷作用位置受限的同时，通过设计阵列式液压软管受力结构来延长车胎和动态称重系统的接触时间以提高车辆的通过速度并提高了系统精度。构建了光纤光栅式液压传感器的初始样机，并进行了静态载荷实验，论证了该技术的可行性。 3. 为了适应动态称重系统对光纤光栅解调系统在实时性、大解调范围、高精度等方面的性能需求，对双光栅匹配解调系统进行工程化研究。通过调整结构布局和改进数据的处理方法，使应变测试系统的测试范围达到了525με，精度达到了±1με。通过理论推导得出采用该波长解调系统，动态称重传感器的称重范围可达10吨，称重精度为ΔM=30Kg。 |
| 英文摘要 | After reviewing the development of the weigh-in-motion(WIM) system technology, comparing the state-of-the-arts of all kinds of the existing WIM technologies and analyzing the limitations and deficiencies of these technologies, a novel WIM technology was proposed, which based on the combining of hydraulic transmission technology and fiber Bragg grating pressure technology. This thesis focus on the investigation in detail on the main parts of this novel WIM system, including the fiber Bragg grating hydraulic sensor scheme, fiber Bragg grating wavelength interrogation technology and the whole system design. From the static experiments, the feasibility of the novel WIM technology was approved. Main works completed are as follows: 1. On the basis of reviewing the optic fiber weigh-in-motion, such as polarimetric sensor, multimode fiber optic sensor, interferometric sensor and fiber Bragg grating sensor, a novel fiber Bragg grating hydraulic sensor was proposed and introduced in detail to the main parts of it. The overall system configuration of this novel WIM was discussed and the function modules were introduced in detail. 2. The main parts of the WIM sensor is studied including the hydraulic tube array and the fiber Bragg grating pressure sensor in principle and design. The results shows that by the novel design scheme, the improved weighing precision and vehicle passing speed can be obtained by designing hydraulic tube array properly, at the same time; the deficiency of traditional method was remedied. The experimental setup was constructed, and static experiments were fulfilled. From the experiment results, the feasibility of the novel weigh-in-motion technology was approved. 3. The two matched gratings interrogation technique was selected as the interrogation method of the novel WIM and studied deeply to judge if its function and parameter capabilities satisfy the requirements of real-time measurements, interrogation range and high precision in WIM system. Through modifying the position of sensor FBG and interrogation FBG to prohibit the influence of temperature and proposing a credible and effective data processing scheme based on a novel divisional look-up table, the measurable range of the system is expanded to 525 , and the precision is improved to ±1 based on normal matched gratings. From the theoretical computation, the weighing range and precision of the WIM sensor adopting this interrogation system is 10 ton and 30kg, respectively, and the results show it can meet the requirements of the novel WIM. |
| 语种 | 中文 |
| 源URL | [http://ir.siom.ac.cn/handle/181231/16599]  |
| 专题 | 上海光学精密机械研究所_学位论文 |
| 推荐引用方式 GB/T 7714 | 杨熙春. 光纤光栅式液压动态称重系统的研究[D]. 中国科学院上海光学精密机械研究所. 2007. |
入库方式： OAI收割
来源：上海光学精密机械研究所
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