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Summary
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This study presents a novel microsensor package enhancing electrostatic field strength for industrial monitoring. The new design offers improved resolution and accuracy compared to traditional sensors.

Keywords:
electric fieldelectric field microsensorelectrostatic chargepackagevibrating capacitor

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Area of Science:

  • Electrical Engineering
  • Materials Science
  • Sensor Technology

Background:

  • Electrostatic voltage is critical in industrial settings for preventing electrostatic discharge (ESD) and enhancing production yields.
  • Existing electric field microsensors suffer from limitations like package shielding and low resolution, hindering their industrial application.
  • There is a need for advanced microsensors capable of accurate industrial static monitoring.

Purpose of the Study:

  • To introduce a novel microsensor package structure designed to significantly enhance internal electric field strength.
  • To optimize the field magnification effect through theoretical calculations and ANSYS simulations.
  • To develop a compact signal processing circuit for the enhanced microsensor.

Main Methods:

  • Theoretical calculation and ANSYS simulation were employed to study and optimize the field magnification effect.
  • A digital synthesizer and digital coherent demodulation method were used to develop the signal processing circuit.
  • Prototype calibration was performed using a charged metal plate, and field testing was conducted on a production line.

Main Results:

  • The newly designed microsensor package demonstrated a remarkable enhancement in electric field strength within the package cavity.
  • The prototype achieved an electric field resolution of 5 V/m and a measuring error of less than 3 V across a -1 kV to 1 kV range at a 2 cm distance.
  • In a production line setting, the developed meter showed good consistency and superior resolution compared to a traditional vibratory capacitance sensor.

Conclusions:

  • The novel microsensor package design effectively overcomes the limitations of previous sensors for industrial static monitoring.
  • The developed compact signal processing circuit enables practical application of the enhanced microsensor.
  • The improved resolution and accuracy of the new sensor offer significant advantages for industrial electrostatic voltage monitoring.