Abstract
The paper describes a methodology to linearize the signals obtained from capacitive force sensors. The approach is based on the theoretical analysis of a negative capacitance circuit adjusted to compensate to the parasitic capacitances that are formed in parallel with the sensor. I describe an original method of linearization using a negative capacitance calculated based on the Laplace Analysis of the one auxiliary circuit added to the main oscillator. This auxiliary circuit, called “Neutrodyne” is a neutralization circuit and provides a negative capacitance that compensates the parasitic one. The result is a rectangular signal with linear frequency dependent on the force or pressure applied. This linearization method can be used in a variety of other applications: mechatronic systems, gait analysis, microelectromechanical systems (MEMS) and nanoelectromechanical systems (NEMS). In our project, the transducer is used for measuring the calibrated Ground Reaction Force during gait in order to calculate the total caloric consumption of the body for horizontal components of forces application points.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Gheorghe, G.I., Constantin, A., Dumitru, S.: Microingineria Mems & Nems Inteligente, Editura CEFIN, București, Romania, 2013, p. 38. ISBN: 978-606-8261-18-8
Pasca, S., Strungaru, R., Constantin, A., Capris, G.: New data acquisition and processing methods for resistive sensors in pedometric measurement systems. Nonlinear Opt. Quantum Opt. Concepts Modern Opt. 39(2), 117–136 (2009). NLOQO 39.2-3
Strungaru, R., Pasca, S., Popescu, S.: Electronica si Informatica Medicala Indrumar de Laborator pentru uzul studentilor – Bucuresti, UPB 1992, p. 35
Anghel, V.C., Gheorghe, I.: Research on tactile sensors interface—review of theoretical and practical approach. Appl. Mech. Mater. 772 (2015). Submitted: 2015-02-02 © (2015). Trans Tech Publications, Switzerland Revised: 2015-02-11, pp. 299–304
Gardner, J.W., Varadan, V.K.: Microsensors MEMS and smart devices, England 2002, British Library Cataloguing in Publication Data, pp. 105–106. ISBN: 0-471-86109-X
Gheorghe, G.I., Istriteanu, S.: Technological and cross-border mixture value chain of science and engineering of multi-integrative mechatronics-integronics-adaptronics with use in the construction of intelligent systems/micro-nano-systems. Int. J. Res. Eng. Technol.—IJRET (2013). ISSN (Print): 2321–7308
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2017 Springer International Publishing Switzerland
About this paper
Cite this paper
Constantin, A., Gheorghe, G.I. (2017). CMOS Transducer with Linear Response Using Negative Capacity that Can Be Used in Mechatronic Systems for Force Measurement in Human Walking Analysis and in the Future in MEMS and NEMS Applications. In: Garrido, P., Soares, F., Moreira, A. (eds) CONTROLO 2016. Lecture Notes in Electrical Engineering, vol 402. Springer, Cham. https://doi.org/10.1007/978-3-319-43671-5_41
Download citation
DOI: https://doi.org/10.1007/978-3-319-43671-5_41
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-43670-8
Online ISBN: 978-3-319-43671-5
eBook Packages: EngineeringEngineering (R0)