The “Intelligent Instruments” course is designed to develop students’ ability to integrate sensing, data acquisition, signal processing, and intelligent decision-making techniques to solve engineering measurement problems. Core topics, including sensing principles, data acquisition and processing, and artificial intelligence, are incorporated into the curriculum. The course covers extensive foundational material and emphasizes system-level integration. However, instructional cases are typically presented in isolation, making it difficult to demonstrate the complete process from sensing physical quantities to making engineering decisions. In this study, an instructional case on switched reluctance motor (SRM) fault diagnosis is developed using a lightweight diagnostic framework, termed Orthogonal Channel Attention-based Lightweight Fault Diagnosis Network (OCA-LFNet), to deepen students’ understanding of sensing principles, data acquisition, and signal processing and to illustrate how these topics are integrated with artificial intelligence. Vibration and three-phase current signals are acquired under various conditions, including normal operation, high-resistance connection faults, bearing faults, and compound faults. Using data from 13 SRM operating conditions, students are guided through sensor configuration, synchronous data acquisition, signal processing, fault classification, and performance evaluation, enabling them to investigate the relationships among measurement information, computational cost, and diagnostic performance. Therefore, this case effectively links the “Intelligent Instruments” course with practical condition-monitoring tasks.
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