相关实验视频
Updated: Jul 13, 2025

06:37
Continuous Hydrologic and Water Quality Monitoring of Vernal Ponds
Published on: November 13, 2017
9.3K
废水处理厂中溶解氧气传感器的半监督异常检测
Liliana Maria Ghinea1, Mihaela Miron2, Marian Barbu1
1Department of Automatic Control and Electrical Engineering, Faculty of Automation, Computers, Electrical Engineering and Electronics, Dunărea de Jos University of Galați, 47 Domnească Str., 800008 Galați, Romania.
Sensors (Basel, Switzerland)
|October 14, 2023
概括
在废水处理厂 (WWTP) 中使用机器学习进行半监督异常检测,可以提高早期故障检测. 卷积自动编码器 (Conv-AE) 在各种异常中实现了超过97%的准确性,提高了操作效率.
科学领域:
- 环境工程 环境工程
- 水资源管理 水资源管理
- 工业过程中的人工智能
背景情况:
- 废水处理过程 (WWTP) 对水资源的保护至关重要,需要持续的运营效率.
- 复杂和动态的WWTP系统需要先进的工具来早期检测微妙的偏差和设备故障,特别是有限的异常数据.
- 半监督学习 (SSL) 为在这样的环境中检测异常提供了一个有希望的方法.
研究的目的:
- 分析和比较五种半监督机器学习技术在WWTP中异常检测的有效性.
- 确定最适合的SSL算法,用于检测溶解氧 (DO) 传感器和通风中的完整,并发和复杂异常.
- 开发基于性能最佳的SSL技术的综合异常检测系统.
主要方法:
- 评估了五种半监督学习算法:隔离森林 (IF),局部异常因素 (LOF),一类支持向量机器 (OCSVM),多层感知子自编码器 (MLP-AE) 和卷积自编码器 (Conv-AE).
- 应用这些算法来检测WWTP溶化氧 (DO) 传感器和通风数据中的完整,并发和复杂异常.
- 开发一个使用最有效的SSL技术的异常检测系统,包括延迟时间检测和故障报警.
主要成果:
- 卷积式自动编码器 (Conv-AE) 展示了卓越的性能,实现了高准确率:98.36%的完整故障,97.81%的并发故障,98.64%的复杂故障.
- Conv-AE有效地检测到组合的初始和并发故障,这表明它在识别复杂的异常模式方面的稳定性.
- 开发的异常检测系统成功地提供了及时检测,并为分析的异常生成了特定的故障报警.
结论:
- 半监督异常检测,特别是使用Conv-AE,对于确保废水处理过程的可靠性和效率非常有效.
- 开发的系统为早期检测设备故障提供了实用解决方案,为可持续的水资源管理做出了贡献.
- 这种方法解决了有限的异常数据的挑战,利用强大的机器学习模型进行强大的故障识别.
相关概念视频
Testing Water Quality
119
When the quality of water for concrete preparation is uncertain, its impact on the setting time of cement and compressive strength of mortar is assessed by comparison with de-ionized or distilled water benchmarks. American Society for Testing and Materials (ASTM) C1602 requires the setting times to be within 90 minutes of the control, British Standard (BS) 3146:1980 allows a 30-minute variance in the initial setting, while British Standards European Norm (BS EN) 1008 specifies initial setting...
119
Special considerations while measuring oxygen saturation
598
Assessing respiratory rate concurrently with pulse measurement is fundamental to patient care, providing valuable insights into the patient's respiratory function. The normal breathing rate for an adult usually falls within a normal range of 12 to 20 breaths per minute. Abnormal respiratory rates can signal underlying health conditions or the need for immediate intervention.
Ensuring accuracy in vital sign recordings while prioritizing patient comfort and minimizing anxiety is...
Ensuring accuracy in vital sign recordings while prioritizing patient comfort and minimizing anxiety is...
598

