Construction of a didactic system for wave propagation speed determination in liquids
Abstract This work shows the construction, calibration and validation of a system to determine sound speed in liquids. We used the pulse method for the measurements. Piezoelectric transducers are used to transmit and receive acoustic wave pulses. The pulse travel time is determined by a counter impl...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | Portuguese |
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Sociedade Brasileira de Física
2020-09-01
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| Series: | Revista Brasileira de Ensino de Física |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-11172020000100630&tlng=en |
| _version_ | 1818744758163472384 |
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| author | Francisco J. Arnold João L. S. P. de Oliveira Alexandre P. Silva Geraldo Dragoni Sobrinho Cristhof J. R. Runge Marta S. G. Pires |
| author_facet | Francisco J. Arnold João L. S. P. de Oliveira Alexandre P. Silva Geraldo Dragoni Sobrinho Cristhof J. R. Runge Marta S. G. Pires |
| author_sort | Francisco J. Arnold |
| collection | DOAJ |
| description | Abstract This work shows the construction, calibration and validation of a system to determine sound speed in liquids. We used the pulse method for the measurements. Piezoelectric transducers are used to transmit and receive acoustic wave pulses. The pulse travel time is determined by a counter implemented in a logic programmable device (FPGA). Initially the system is calibrated using pure water. We performed measurements in NaCl and CuSO4 solutions at different concentrations. The system detected speed variations of approximately 1.0 m/s in relation to the concentrations. Therefore, from didactical point of view, it is possible to perform experiments where small changes in the impurities concentration can be detected and measured. Further, the construction or even the enhancement of the system may be stimulant to students devoted to electronic instrumentation. |
| first_indexed | 2024-12-18T02:49:23Z |
| format | Article |
| id | doaj.art-132f8bf830984016a2ce5d9e5fbae77c |
| institution | Directory Open Access Journal |
| issn | 1806-9126 |
| language | Portuguese |
| last_indexed | 2024-12-18T02:49:23Z |
| publishDate | 2020-09-01 |
| publisher | Sociedade Brasileira de Física |
| record_format | Article |
| series | Revista Brasileira de Ensino de Física |
| spelling | doaj.art-132f8bf830984016a2ce5d9e5fbae77c2022-12-21T21:23:29ZporSociedade Brasileira de FísicaRevista Brasileira de Ensino de Física1806-91262020-09-014210.1590/1806-9126-rbef-2020-0239Construction of a didactic system for wave propagation speed determination in liquidsFrancisco J. Arnoldhttps://orcid.org/0000-0003-2818-9709João L. S. P. de OliveiraAlexandre P. SilvaGeraldo Dragoni SobrinhoCristhof J. R. Rungehttps://orcid.org/0000-0002-6031-2941Marta S. G. Pireshttps://orcid.org/0000-0003-3615-4493Abstract This work shows the construction, calibration and validation of a system to determine sound speed in liquids. We used the pulse method for the measurements. Piezoelectric transducers are used to transmit and receive acoustic wave pulses. The pulse travel time is determined by a counter implemented in a logic programmable device (FPGA). Initially the system is calibrated using pure water. We performed measurements in NaCl and CuSO4 solutions at different concentrations. The system detected speed variations of approximately 1.0 m/s in relation to the concentrations. Therefore, from didactical point of view, it is possible to perform experiments where small changes in the impurities concentration can be detected and measured. Further, the construction or even the enhancement of the system may be stimulant to students devoted to electronic instrumentation.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-11172020000100630&tlng=enSoundElectronicsFPGA |
| spellingShingle | Francisco J. Arnold João L. S. P. de Oliveira Alexandre P. Silva Geraldo Dragoni Sobrinho Cristhof J. R. Runge Marta S. G. Pires Construction of a didactic system for wave propagation speed determination in liquids Revista Brasileira de Ensino de Física Sound Electronics FPGA |
| title | Construction of a didactic system for wave propagation speed determination in liquids |
| title_full | Construction of a didactic system for wave propagation speed determination in liquids |
| title_fullStr | Construction of a didactic system for wave propagation speed determination in liquids |
| title_full_unstemmed | Construction of a didactic system for wave propagation speed determination in liquids |
| title_short | Construction of a didactic system for wave propagation speed determination in liquids |
| title_sort | construction of a didactic system for wave propagation speed determination in liquids |
| topic | Sound Electronics FPGA |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-11172020000100630&tlng=en |
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