Portable near-electricity early warning device based on MEMS electric field sensor

The invention provides a portable near-electricity early warning device based on an MEMS electric field sensor, and belongs to the technical field of hot-line work safety management and control. The invention discloses a portable near-electricity early warning device based on an MEMS electric field sensor. The near-electricity early warning operation process comprises the steps that the MEMS electric field sensor generates periodic vibration induction charges; the inductive charge is converted into a voltage signal, an electric field signal is obtained through the analog demodulation circuit, and the electric field signal is processed by the main controller to obtain a numerical value representing the field intensity; when the main controller detects that the value representing the field intensity is higher than a set threshold value, an alarm is given out, and the near-electricity early warning function of hot-line work is achieved. The problem that an existing near-electricity early warning device is low in