%0 Journal Article
%@ 0377-2063
%A Nguyen, Dac Hai
%A Tran, Thi Thuy Ha
%A Vu, Quoc Tuan
%A Le, Van Thai
%A Chu, Duc Trinh
%A Bui, Thanh Tung
%A Nguyen, Ngoc An
%D 2020
%F SisLab:4133
%J IETE Journal of Research
%P 1-8
%T Study on Design Optimization of a Symmetry Two-Axis Tilt Angle Capacitive Sensor
%U https://eprints.uet.vnu.edu.vn/eprints/id/eprint/4133/
%X This paper presents the design, optimization, fabrication and characterization of a symmetrical twoaxis tilt angle sensor. The sensor consists of a globe-calotte-shaped excitation electrode and two pairs of sensing electrodes of the same dimensions, positioned symmetrically on a 3D printed hollow sphere. The sphere is filled with oil and air, and then mounted on the surface of a printed circuit board (PCB) for mechanical packaging and measurement. Experimental results show that the sensor can measure the tilt angle in both the x- and y-axes with sensitivity of 124 mV/° and resolution of ±0.15° in the range from −35° to 35°. The characteristics of the sensor on the x- and y-axes are similar. The proposed sensor can be used in several applications.