An implementation method for an inductive proximity sensor with an attenuation coefficient of 1

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Abstract

In order to achieve long-distance measurement, a bridge differential inductance detection circuit is employed; on this basis, an automatic zero adjustment technique for sensors using an integral–proportional-integral controller is proposed in this work to achieve consistent product production and efficient installation and debugging, and the mathematical model of the bridge differential inductance detection circuit is established to effectively design the controller parameters. Furthermore, an implementation method for an inductive proximity sensor with an attenuation coefficient of 1 is also proposed based on the bridge differential inductance detection circuit by querying the proximity distance table in the field-programmable gate array (FPGA) to detect multiple target metal objects at the same inductive distance. Simulation and experimental results show that the proposed method is correct and effective.

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Zhao, Y., Fang, Y., Yang, J., Zhang, W., Ge, X., Cao, S., & Xia, X. (2020). An implementation method for an inductive proximity sensor with an attenuation coefficient of 1. Energies, 13(24). https://doi.org/10.3390/en13246482

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