Design of a Micro Electromagnetic-Driven Electric Field Sensor

The measurement of electric fields is widely used in various fields such as geophysical exploration, electrical engineering, meteorology, aerospace, and mechanical systems. Currently, mainstream electric field meters primarily use rotating shield electrodes as electric field detection probes. These probes detect charges in a spatial electric field through an induction plate. A rotating motor connects the grounded electrode on the induction plate, and the process of exposing, blocking, and shielding the induction electrode changes the induced charge, generating an induced current. However, such electric field meters are bulky and expensive. The aim of this study is to design a miniature membrane-type atmospheric electric field meter with electromagnetic drive using electrostatic induction from conductors. The device consists of a sensing module, a detection module, a wireless transmission module, and a protective casing. Compared to costly MEMS-based models, this technology offers lower costs, better environmental adaptability, and potential for widespread deployment.