全场动态参数和压力识别的电缆使用新型全息视觉的方法
Shuai Shao1,2, Gang Liu2, Zhongru Yu3
1School of Intelligent Information Engineering, Chongqing Aerospace Polytechnic, Chongqing 400021, China.
Sensors (Basel, Switzerland)
|August 28, 2025
概括
一种基于全息视觉的新方法准确地识别了高阶动态参数和电缆中的电压. 这种非接触式方法提高了可视化,为结构监测提供了低成本,方便的解决方案.
科学领域:
- 结构工程
- 光学测量技术
- 振动分析
背景情况:
- 现有的基于视觉的方法由于低振幅的振动而难以精确识别更高阶的动态参数.
- 精确的电缆支结构监测对于安全和维护至关重要.
研究的目的:
- 提出一种基于全息视觉的新方法,用于准确识别高级全场动态参数和延伸电缆的张力估计.
- 开发一种非接触式,可视化和可量化的电缆支结构监控策略.
主要方法:
- 开发了一种全场光学流量跟踪算法,以捕获全息特征点的动态位移信息.
- 使用频域分析来提取自然频率和减噪比率.
- 使用基于欧利尔的放大算法 (全息特征点视频放大 - HFPVM) 来增强弱动信号.
主要成果:
- 基于全息视觉的方法准确地确定了前五个自然频率,误差低于5%.
- 电缆张力的估计显示最大偏差为6.86%.
- 确定了前三个规范化的全息模式形状和动态位移向量,其模式保证标准 (MAC) 值高达99.51%.
结论:
- 拟议的无接触全息视觉方法为停留电缆张力估计提供了方便且低成本的解决方案.
- 这种方法提供了一个全面的,可视化和可量化的策略,用于定期或长期监测电缆支结构,证明了重要的实际潜力.
相关概念视频
Cable Subjected to a Distributed Load
800
The analysis of suspension bridges is a complex and critical process that involves multiple factors, including the shape and tension of the main cables. The main cables of suspension bridges are subjected to distributed loads, which result in changes in tensile forces and deformation of the cable. These loads must be carefully considered to ensure that the bridge is safe and capable of supporting the weight of different loads.
800
Cable: Problem Solving
372
When dealing with a cable that is fixed to two supports and subjected to uniform loading, it is crucial to determine the maximum tension in the cable. This process can be broken down into several key steps, as outlined below:
372
Cable Subjected to Its Own Weight
526
Overhead power transmission lines rely on cables to carry electricity across large distances. To ensure the stability and functionality of these lines, it is crucial to understand the shape and tension experienced by the cables under the influence of their weight.
A generalized loading function is employed to analyze a cable subjected to its own weight. This function considers the force acting along the cable's arc length rather than its projected length, providing a more accurate...
A generalized loading function is employed to analyze a cable subjected to its own weight. This function considers the force acting along the cable's arc length rather than its projected length, providing a more accurate...
526
Cable Subjected to Concentrated Loads
937
Flexible cables are commonly used in various applications for support and load transmission. Consider a cable fixed at two points and subjected to multiple vertically concentrated loads. Determine the shape of the cable and the tension in each portion of the cable, given the horizontal distances between the loads and supports.
937
Energy Stored In A Coaxial Cable
1.7K
A coaxial cable consists of a central copper conductor used for transmitting signals, followed by an insulator shield, a metallic braided mesh that prevents signal interference, and a plastic layer that encases the entire assembly.
In the simplest form, a coaxial cable can be represented by two long hollow concentric cylinders in which the current flows in opposite directions. The magnetic field inside and outside the coaxial cable is determined by using Ampère's law. The magnetic...
In the simplest form, a coaxial cable can be represented by two long hollow concentric cylinders in which the current flows in opposite directions. The magnetic field inside and outside the coaxial cable is determined by using Ampère's law. The magnetic...
1.7K
Studying the Cytoskeleton
6.7K
The cytoskeletal architecture can be studied using different microscopic and biochemical techniques. Electron microscopy was instrumental in discovering the cytoskeletal architecture around the 1960s, which allowed obtaining structural information at a high-resolution level. However, the sample preparation procedure often limits this ability in biological samples. Several protocols have been developed over the years to optimize sample preparation. In one of the protocols known as rotary...
6.7K


