TAILIEUCHUNG - Symmetry two-axis tilt angle capacitive sensor system

This paper presents the design, fabrication and operation of a highly symmetrical twoaxis capacitive sensor. The proposed sensor consists of five electrodes, including of an excitation electrode and two pairs of sensing electrodes with exactly the same dimensions, arranged at identified symmetrically locations on a 3D printed hollow sphere, which containing dielectric medium formed by the partly filled oil and the remaining air. | VNU Journal of Science Mathematics - Physics Vol. 35 No. 2 2019 60-66 Original Article Symmetry Two-axis Tilt Angle Capacitive Sensor System Tran Thi Thuy Ha1 Nguyen Dac Hai2 Bui Thanh Tung3 1Posts and Telecommunications Institute of Technology Hanoi Km10 Nguyen Trai Hanoi Vietnam 2Hanoi University of Industry 298 Cau Dien Bac Tu Liem Hanoi Vietnam 3VNU University of Engineering and Technology 144 Xuan Thuy Cau Giay Hanoi Vietnam Received 15 March 2019 Revised 29 March 2019 Accepted 29 March 2019 Abstract This paper presents the design fabrication and operation of a highly symmetrical two-axis capacitive sensor. The proposed sensor consists of five electrodes including of an excitation electrode and two pairs of sensing electrodes with exactly the same dimensions arranged at identified symmetrically locations on a 3D printed hollow sphere which containing dielectric medium formed by the partly filled oil and the remaining air. The proposed sensor can measure the tilt angle about the x-axis and y-axis with symmetrical outputs. The proposed sensor is fabricated using a rapid prototyping technology and mounted on the surface of a printed circuit board PCB for mechanical packaging and signal processing. Experimental measurement results show that the sensor system can measure the tilt angle in both the x- and y-axis with sensitivity of 103 mV degree and resolution of 1 degree in the range of -30 degree to 30 degree. This sensor system can be used in many military and consumer applications. Keywords Capacitive sensor Fluidic sensor Two-axis tilt angle sensor. 1. Introduction Nowadays there are many types of tilt angle sensors have been proposed and developed for widely used in industry scientific research medical support for patients and in several consumer applications. Some common applications that the tilt sensors are used including robot balancing support mobility activities for people with disabilities and people with a stroke or spinal cord injury 1-4 patient .

• Vật lý
• Capacitive sensor
• Fluidic sensor
• Two axis tilt angle sensor
• Containing dielectric medium
• Remaining air
• Tạp chí khoa học
• Modeling and analysic of mems capacitive pressure sensor
• Mems capacitive pressure sensor using graphene membrane
• Micro electromechanical systems
• The MEMS capacitive pressure sensor
• Khoa học tự nhiên
• Air bubble detection
• Carbon diaphragm
• COMSOL Multiphysics
• Diaphragm displacement
• Pressure sensor
• Hypothetical sensor design
• Sensors and analytical devices
• Lecture Sensors and analytical devices
• Thiết bị cảm biến
• Basic measurement methods
• Sensors technologies
• Capacitive sensors
• Pressure measurement
• Capacitive pressure sensor