一种异常检测方法,用于识别学校建筑物中温度异常行为的位置
Ashani Wickramasinghe1, Saman Muthukumarana2, Matt Schaubroeck3
1Department of Statistics, Faculty of Science, University of Manitoba, Winnipeg, R3T 2N2, Canada. wickrama@myumanitoba.ca.
Scientific reports
|December 22, 2023
概括
这项研究引入了一种新的评分方法,使用传感器数据检测建筑异常. 它有效地识别了HVAC系统中表现不佳的区域,使用最小的数据提高了舒适度和效率.
科学领域:
- 建筑科学 建筑科学
- 环境监测 环境监测
- 数据分析数据分析数据分析.
背景情况:
- 无线传感器 (温度,湿度) 的时间序列数据为建筑HVAC系统提供了洞察力.
- 传感器异常可以确定设计或维护不良的区域,影响热舒适度,空气质量和能源效率.
研究的目的:
- 开发一种评分方法,用于识别显示集体异常的传感器,这些异常表明环境问题.
- 确定商业和机构建筑物中的有问题的位置.
主要方法:
- 应用动态时间扭曲 (DTW) 用于集体异常检测.
- 开发了一种评分方法,使用异常数,垂直距离和DTW距离的加权和.
- 通过模拟和网格搜索算法优化权重.
主要成果:
- 开发的评分方法成功地识别了传感器数据中的集体异常.
- 使用合成数据和案例研究来评估性能.
- 用仅仅一周的时间收集的数据证明了有效的异常检测.
结论:
- 这种新的评分方法有效地检测到建筑传感器数据中的集体异常.
- 它的性能优于传统的机器学习模型,这些模型需要大量的训练数据.
- 这种方法通过识别和解决局部问题来提高建筑性能.
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