Contrastive Multi-Modal Representation Learning for Spark Plug Fault Diagnosis

• URL: http://arxiv.org/abs/2311.02282v1
• Date: Sat, 4 Nov 2023 00:04:09 GMT
• Title: Contrastive Multi-Modal Representation Learning for Spark Plug Fault Diagnosis
• Authors: Ardavan Modarres, Vahid Mohammad-Zadeh Eivaghi, Mahdi Aliyari Shoorehdeli, Ashkan Moosavian
• Abstract summary: We present a Denoising Multi-Modal Autoencoder with a unique training strategy based on contrastive learning paradigm. The presented approach achieves excellent performance in fusing multiple modalities (or views) of data into an enriched common representation. The presented methodology enables multi-modal fault diagnosis systems to perform more robustly in case of sensor failure occurrence.
• Score: 0.21847754147782888
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Due to the incapability of one sensory measurement to provide enough information for condition monitoring of some complex engineered industrial mechanisms and also for overcoming the misleading noise of a single sensor, multiple sensors are installed to improve the condition monitoring of some industrial equipment. Therefore, an efficient data fusion strategy is demanded. In this research, we presented a Denoising Multi-Modal Autoencoder with a unique training strategy based on contrastive learning paradigm, both being utilized for the first time in the machine health monitoring realm. The presented approach, which leverages the merits of both supervised and unsupervised learning, not only achieves excellent performance in fusing multiple modalities (or views) of data into an enriched common representation but also takes data fusion to the next level wherein one of the views can be omitted during inference time with very slight performance reduction, or even without any reduction at all. The presented methodology enables multi-modal fault diagnosis systems to perform more robustly in case of sensor failure occurrence, and one can also intentionally omit one of the sensors (the more expensive one) in order to build a more cost-effective condition monitoring system without sacrificing performance for practical purposes. The effectiveness of the presented methodology is examined on a real-world private multi-modal dataset gathered under non-laboratory conditions from a complex engineered mechanism, an inline four-stroke spark-ignition engine, aiming for spark plug fault diagnosis. This dataset, which contains the accelerometer and acoustic signals as two modalities, has a very slight amount of fault, and achieving good performance on such a dataset promises that the presented method can perform well on other equipment as well.

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