High sensitivity low cost capacitive strain gage
Loading...
External sources
External sources
Date
Advisor
Coadvisor
Graduate program
Undergraduate course
Journal Title
Journal ISSN
Volume Title
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Type
Work presented at event
Access right
Acesso aberto
External sources
External sources
Abstract
This paper describes a high senstivity low cost capacitive strain gage sensor. The theory, design, and sensor construction details are presented. It consists of eight capacitive sensors connected in two full bridges. The capacitive strain gage sensor structure was designed in order to produce high sensitivity and low dependence with temperature. By using a simple signal conditioning circuit constituted by a differential amplifier, a band-pass filter, and a precision rectifier the device can measure forces with resolution of 0.009 N and precision of 98.7%. It is rugged, presents linear response, and good repeatability. It presents sensitivity of 8.7 V/N and fall time of 12 ms.
Description
Keywords
Capacitive sensor , Capacitive strain gage , High sensitivity , Strain gage , Capacitive sensors , Capacitive strain gages , Mechanical systems , Bandpass filters , Costs , Differential amplifiers , Force measurement , Sensitivity analysis , Sensors , Signal processing , Thermal effects , Strain gages
Language
English
Citation
Conference Record - IEEE Instrumentation and Measurement Technology Conference, v. 1, p. 358-362.
