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Effect of outer spherical shell opening structure on the sensitivity of double spherical shell electric field sensor
Zhengang Zhao1,2, Xuanyi Yang1, Yitan Li1
1Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming 650500, China.
The Review of Scientific Instruments
|January 29, 2024
Summary
Increasing the outer shell opening diameter of double spherical shell (DSS) electric field sensors enhances their sensitivity. This improved DSS open-hole design offers better performance for complex electric field measurements compared to traditional flat plate sensors.
Area of Science:
- Electrical Engineering
- Sensor Technology
- Electromagnetics
Background:
- Double spherical shell (DSS) sensors offer compact size and simple fabrication for electric field measurements.
- Existing DSS sensors exhibit low sensitivity, limiting their effectiveness in complex environments.
Purpose of the Study:
- To enhance the sensitivity of DSS electric field sensors.
- To investigate the impact of outer spherical shell opening diameter on sensor performance.
Main Methods:
- Theoretical analysis of outer shell opening diameter effects.
- Design and fabrication of DSS sensors with 2, 4, and 6 mm apertures.
- Experimental testing of sensor sensitivity, linearity, hysteresis, repeatability, and rotational characteristics.
Main Results:
- Sensor sensitivity increases with larger outer shell opening diameters.
- DSS sensors with open holes demonstrate good linearity, hysteresis, and repeatability.
- Rotational characteristic experiments showed relative errors of 18%, 23%, and 31% for different apertures.
Conclusions:
- The DSS open-hole structure significantly improves sensor sensitivity and performance.
- The modified DSS sensor is more suitable for electric field measurements than conventional flat plate sensors.
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