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Authors
Abstract(s)
Metal stamping and plastic injection are widely used in the industry due to their wide
application. Giving shape and size by bending sheet metal or injecting melted plastic into
molds is a very practical and economical way to create objects and remain in a highly
competitive market. Monitoring the pressure and temperature in these processes is of
utmost importance so that the good quality of the material produced is maintained. It is
in this aspect that the On-Surf project fits. A national project to develop techniques for
changing thin surfaces that promote advanced and innovative solutions in different sectors
of activity. This work focuses on the monitoring and control of these industrial processes
using a reconfigurable data acquisition system for thin surface sensors in a Wheatstone
bridge. The signal acquisition is made with the use of a commercial amplifier ZSSC 4151.
This amplifier is a complete analog data acquisition system, with the benefit of digital
processing and calibration of the input signal. The output data are available in an analog
way and linearized between the calibration points. Since the signal output is linear, we
can infer the temperature value, or any calibrated signal, at an intermediate point in the
measurement range. In addition, a graphical interface is provided by the manufacturer
for configuration and calibration of the integrated. It is also proposed, based on the
analog-digital converter equation, an equation to obtain the resistance of the sensor in
the Wheatstone bridge.
Description
Mestrado de dupla diplomação com a UTFPR - Universidade Tecnológica Federal do Paraná
Keywords
Data acquisition system Thin surface sensing Metal stamping Plastic injection