Abstract
Strain gauges are devices used to measure strain on objects. The measured value is proportional to the variation of its electrical resistance, and this method is widely used in circuits for data acquisition. Many methods of analog signal conditioning are found in the literature, but the conversion and storage are dependent on the technology employed. In this paper, a study of a data acquisition module to perform mechanical tests on metal bars is presented. The system consists of a signal conditioning circuit compatible with the Arduino platform, where the collected data can be processed and stored. This work covers the steps by step of signal conditioning, such as amplification, and analog-to-digital conversion. The circuits employed are explained, and the detail about software and hardware technology are commented. In the end, experimental tests using the module are presented where a discussion about the test results are given. The method affords changes in the setup, which can be useful in similar tests.
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dos Santos, E.F., Oliveira, V.J.S., Ferreira, W.A., Benatti, J.C.B. (2019). Applied Instrumentation: Strain Measurements Using Arduino and Strain Gauge. In: Iano, Y., Arthur, R., Saotome, O., Vieira Estrela, V., Loschi, H. (eds) Proceedings of the 3rd Brazilian Technology Symposium. BTSym 2017. Springer, Cham. https://doi.org/10.1007/978-3-319-93112-8_22
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DOI: https://doi.org/10.1007/978-3-319-93112-8_22
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