Design and Study of Metal Detection Circuit Based on Electromagnetic Induction Principle
In industrial production,the wear and rust on metal surface will make it difficult to distinguish their specific types.This paper proposes a method for detecting metal types using the principle of electromagnetic induction,and de-signs a detection circuit with STM32 microcontroller.The measured metal and the coil with alternating current are ab-stracted as an air transformer model.The primary voltage of the transformer is amplified through an LC driving circuit,and the peak detection circuit is used to maintain the signal peak value and transmit it to the microcontroller for recogni-tion,thereby determining the type of metal.
万方数据
维普
