User Stories

Albatroz Engineering Develops Automated, Real-Time Power Line Inspection System

挑战

开发一个自动化的实时系统,用于检查和维护间接费用线

解决方案

使用Mathworks工具实时获取,可视化,同步和解释来自多个来源的数据。

Results

  • Development time cut by at least 50%
  • System accuracy near 100%
  • Inspection costs reduced by 90%

"During the first test flight, we discovered a bug in one of our algorithms. We opened up MATLAB and solved the problem while in flight. In 10 minutes our data acquisition and processing algorithms were working fine and we were able to carry on with the trial. It was very impressive. "

阿尔贝托·维尔(Alberto Vale),阿尔巴特罗兹工程
横穿茂密森林区域的60kV高架线的直升机景观。

为了确保可靠的电力发电,公用事业公司必须进行定期检查,以识别电力传输线附近的树木和其他障碍,并检查导体或绝缘体的物理恶化。从地面或飞机上检查线路,即使是训练有素的专家也只能提供危险与电源线之间距离的主观估计。通常需要多次通过以完成检查,从而使过程变得昂贵且耗时。

Albatroz Engineering开发了电源线维护检查系统(PLMI),这是一种自动化的实时系统,可集成所有检查并提供精确的距离测量。PLMI使用Mathworks™工具构建,使用复杂的数据分割算法来分析LIDAR(光检测和范围)数据,并捕获红外线,紫外线和摄像机图像。

Albatroz Engineering的首席研发工程师Alberto Vale指出:“ MATLAB被证明是开发,测试和分析几种不同图像获取和信号处理算法的理想平台。”“有了MATLAB,想法和实施之间的时间非常短。结果,我们在不到六个月的时间内开发了第一个工作原型,预计我们的营销时间将会在三到四个月内。”

挑战

Albatroz工程需要一个集成的开发环境,以进行数据和图像采集,可视化,信号处理和数据同步。“我们需要从数码相机和GPS接收器以及LIDAR传感器实时获取数据,总计约为500kb/s的总带宽”解释说。“我们的工程师需要同步和可视化所有这些数据,对其进行处理,然后在生产系统中清楚地将其清楚地呈现给我们的客户。”

为了吸引潜在客户,PLMI需要在一次通行证中提供准确的定量结果。Vale解释说:“我们的客户规格要求该系统至少检测到训练有素的专家确定的电源线危害的至少95%,同时提供危险和线路之间的确切距离。”

解决方案

Albatroz Engineering used MATLAB®and several companion toolboxes to develop, prototype, and implement production versions of PLMI.

为了构建早期原型,Albatroz团队使用MATLAB通过TCP/IP和GPS数据通过串行链接获取LIDAR数据。他们使用图像采集工具箱™从具有USB链接的标准网络摄像头捕获图像。在生产系统中,该相机被FireWire(IEEE-1394)链接的更高分辨率摄像机取代。

该团队使用MATLAB信号处理工具箱™ to process LIDAR signals. Using convolution functions from Signal Processing Toolbox, they developed data segmentation algorithms that interpret the cloud of points produced by LIDAR and identify power lines, trees, buildings, and other obstacles. When these algorithms identify a potential hazard, an alert is issued in the interactive interface showing geometry from LIDAR, image from video, and location from GPS.

A higher end system for airborne operation, featuring sustained data rates up to of 6MB/s, combines C++ real-time multithread acquisition, SQL engines, algorithms developed in MATLAB, then implemented in C++ and Web services. It includes a four-video, two-audio channel geo-referenced recorder from a Portuguese partner.

Albatroz Engineering使用MATLAB Compiler™,数据库Toolbox™和Matlab图形用户界面(GUI)构建工具,以创建一个独立的应用程序,用于后处理任务数据。使用此应用程序,Albatroz工程客户可以对收集在多个任务中收集的数据进行深入分析,并创建全面的多媒体报告。

PLMI系统目前正在葡萄牙使用。

Results

  • Development time cut by at least 50%。"With MATLAB, we had a prototype in test flights within four months and a working version within six months,"explains Vale. "Development would have taken two or three times longer using C or C++."

  • System accuracy near 100%。"For high-voltage lines (50kV and above), our measurement system outperforms visual inspection by seasoned technicians, has less than 5% of false alarms and very rarely misses an issue," says Vale. "In practice, it often identifies close to 100% of potential hazards."

  • Inspection costs reduced by 90%。Vale说:“我们使用Mathworks工具开发的系统集成了来自多个来源的数据,以优化每台直升机的飞行并同时执行多次检查。”“因此,对PLMI进行检查的成本要比对标准机载激光雷达调查的成本少十倍。”

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