基于红外热像仪的电机控制元件自动评定

María Herrera-Arellano, I. Terol-Villalobos, Luis. A. Morales-Hemandez, M. Valtierra-Rodríguez
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引用次数: 3

摘要

红外热成像技术已成为工业中电机和电气设备状态监测的重要工具。一般来说,电机受到了特别的关注,因为它们几乎存在于任何工业过程中。关于这个主题,许多状态评估的工作集中在电机本身或控制电机的电气元件上,已经在文献中发表。尽管取得了可喜的成果,但仍存在一些问题;例如,需要一个专家用户来解释热图像,或者如果使用商业设备,则需要有限地将不同于其设计目的的任务整合起来。在这项工作中,提出了一种基于红外热成像和图像处理的新方法,用于电机控制部件的自动评估。所提出的方法在一个低成本的开放架构平台上实现,该平台也是由作者开发的。总的来说,该建议包括基于阈值分割和感兴趣区域的数学形态学方法的分割,即过热区域。电气元件包括保险丝柜、断路器和电气开关。用于热状态评估的温度变化遵循国际电气测试协会规定的维护规范。结果表明了该方法的有效性和实用性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Infrared thermography-based automatic assessment of control components for electric machines
Infrared thermography technology has become an important tool for condition monitoring of both electrical machines and electrical equipment in industry. In general, motors have received special attention as they are present in almost any industrial process. In regard to this subject many works for condition assessment focused on either the motor itself or the electrical components that control it have been published in literature. Despite obtaining promising results, some issues still remain; for instance, the need of an expert user for thermal images interpretation or, if commercial equipment is used, the limited integration of tasks different from those they are designed for. In this work, a novel methodology based on infrared thermography and image processing for automatic assessment of control components for electrical machines is presented. The proposed methodology is implemented in a low-cost open-architecture platform, which is also developed by the authors. In general, the proposal consists of a segmentation based on thresholding and mathematical morphology methods of the region of interest, i.e., the area with overheating. The electrical components considered are fuse cabinets, circuit breakers, and electric switches. The temperature variations used for thermal condition assessment follow the maintenance specifications stated in the International Electrical Testing Association. Results demonstrate the effectiveness and usefulness of this proposal.
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