Journal of Aerospace System Engineering (항공우주시스템공학회지)

The Society for Aerospace System Engineering (항공우주시스템공학회)
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A Comparative Study of Deep Learning-Based Anomaly Detection Methods for Time-Series Data in Complex Embedded Systems

복합 임베디드 시스템 시계열 데이터를 활용한 딥러닝 이상 탐지 방법 비교 연구

  • Received : 2024.07.26
  • Accepted : 2024.09.29
  • Published : 2024.10.31
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Abstract

Complex embedded systems such as aircraft can lead to serious hazards when failures occur. This paper presents an anomaly detection model using deep learning techniques such as LSTM and 1D CNN on time-series datasets generated from complex embedded systems and compares inference results. Results showed that the 1D CNN model outperformed the LSTM model. Compared with the inference performance of a two-dimensional CNN model created in a previous study (Anomaly Detections Model of Aviation System by CNN), the two-dimensional CNN model had higher accuracy and recall. However, the 1-dimensional CNN model had faster inference speed. We can conclude that the 1D CNN model is more suitable than the LSTM model for anomaly detection in complex embedded systems that require real-time anomaly detection.

비행체 같은 복합 임베디드 시스템은 고장이 발생하면 심각한 위험을 초래할 수 있다. 본 논문에서는 복합 임베디드 시스템에서 출력되는 시계열 데이터 셋과 LSTM, 1차원 CNN과 같은 딥러닝 알고리즘을 활용하여 이상 탐지 모델을 생성하고 추론 결과를 비교했다. 그 결과 1차원 CNN 모델이 좋은 성능을 보였다. 이전 연구(합성곱 신경망을 활용한 항공 시스템의 이상 탐지 모델 연구)에서 생성한 2차원 CNN 모델의 추론 성능을 비교한 결과 정확도와 재현율은 2차원 CNN 모델이 높았지만, 추론 속도는 1차원 CNN 모델이 빨랐다. 실시간 이상 탐지가 필요한 복합 임베디드 시스템의 이상 탐지 모델에는 1차원 CNN 모델이 적합한 것으로 판단된다.

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References

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