Articles | Volume 6, issue 1
Regular research article
10 May 2017
Regular research article |  | 10 May 2017

Development of a chopper charge amplifier for measuring the cavity pressure inside injection moulding tools and signal optimisation with a Kalman filter

Manuel Schneider, Alexander Jahn, Norbert Greifzu, and Norbert Fränzel

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Cited articles

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Enz, C. C. and Temes, G. C.: Circuit techniques for reducing the effects of op-amp imperfections:autozeroing, correlated double sampling, and chopper stabilization, P. IEEE 84.11,, 1996.
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Greifzu, N.: Entwicklung von Hard- und Software zur Messung von Kraft-, Druck- und Temperatursignalen in Kunststoffspritzgussmaschinen, Master's thesis, University of Applied Sciences Schmalkalden, 2015.
Grellmann, W. and Seidler, S.: Polymer Testing, vol. 2, Carl Hanser Verlag,, 2013.
Short summary
This article describes a chopper amplifier which has been specially developed for piezoelectric pressure sensors. It is shown that the amplifier provides good results for pressure measurement in injection moulds. A special feature of this work is the signal optimisation through the use of a Kalman filter.