Main Article Content
The present paper describes the development and practical application of an embedded system that performs the online monitoring of sound noises in a library of an educational institution using Internet of Things. The main objective of the proposed project is to record sound levels in closed areas and to alert users when allowed limits were exceeded. Thus, it was used a set of cost-effective tools, like free software and low-cost technologies. Raspberry Pi, PIC microcontroller and a sound sensor module were applied in the first phase. In the second phase, only ESP8266 microcontroller with sound sensor were used. Results of these two implemented phases are discussed. It was observed that both developed embedded systems, which use Internet of Things concept, contributed satisfactorily offering a better space for concentration.
This work is licensed under a Creative Commons Attribution-NoDerivatives 4.0 International License.
Submission of an article implies that the work described has not been published previously (except in the form of an abstract or as part of a published lecture or academic thesis), that it is not under consideration for publication elsewhere, that its publication is approved by all authors and tacitly or explicitly by the responsible authorities where the work was carried out, and that, if accepted, will not be published elsewhere in the same form, in English or in any other language, without the written consent of the Publisher. The Editors reserve the right to edit or otherwise alter all contributions, but authors will receive proofs for approval before publication.
Copyrights for articles published in IJIER journals are retained by the authors, with first publication rights granted to the journal. The journal/publisher is not responsible for subsequent uses of the work. It is the author's responsibility to bring an infringement action if so desired by the author.
 L.R. Silveira and K.R.F. Silva. Analysis of operant behavior and conditioning of library users [Internet]. São Luís - MA; 2010 - [cited 2018 July 23]. Available from: https://repositorio.ufma.br/jspui/handle/1/428.
 J.M. Juran, The quality since the project: the new steps for the planning of the quality in products and services.Pioneira, São Paulo, 1992. pp.558.
 K.R.F. Silva and C.M.A. Veras Júnior. Development of a microcontrolled device for noise control in the library of the Federal Institute of Maranhão. In: Picos PI. Proceedings of the III Regional School of Informatics of Piauí - Articles and Minicourses, 2017 June, pp.12-14, Picos, PI.
 J.Y.P. Leite, R.L. Lopes, E.S. Amaral, J.C. Santos and M.R. Fernandes. Noise level: a measure of quality in libraries. In: São Paulo SP, Brazilian Association of Sanitary and Environmental Engineering, editor. Proceedings of the XIX Brazilian Congress of Sanitary and Environmental Engineering, São Paulo, SP.
 B.P. Santos, L.A.M. Silva, C.S.F.S. Celes, N.J.B. Borges, B.S,.M. Peres, A.M. Vieira, L.F.M. Vieira, O.N. Goussevskaia and A.A.F. Loureiro. Internet of Things: From Theory to Practice [Internet]. Minas Gerais; 2016. Available from: http://homepages.dcc.ufmg.br/~mmvieira/cc/papers/internet-das-coisas.pdf.
 A. Zanella, N. Bui, A. Catellani, L. Vangelista and M. Zorzi. “Internet of things for smart cities.” IEEE Internet of things journal. 2014 Feb;vol.1, no.1, pp.6-15, doi : 10.1109/JIOT.2014.2306328.
 A. Zanella, N. Bui, A. Catellani, L. Vangelista and M. Zorzi. “Internet of things for smart cities.” IEEE Internet of things journal. 2014 Feb, vol.1no.1, pp.17-19, doi : 10.1109/JIOT.2014.2306328.
 Jucá SCS. Practical applications of Raspberry Pi with PIC microcontrollers [Internet]. Maracanaú-CE; 2016 - [cited 2018 July 23]. Available from: https://github.com/SanUSB-grupo/Aplicacoes-Praticas-de-Raspberry-Pi-com-microcontroladores-PIC.
 RaspberryPi ORG. Raspberry Pi model B+ [Internet]. 2017 - [cited 2018 July 23]. Available from: https://www.raspberrypi.org/products/raspberry-pi-3-model-b-plus.
 Wiring Pi . GPIO Interface library for the rasberry pi [Internet]. 2018 - [cited 2018 July 17]. Available from: http://wiringpi.com.
 S.C.S. Jucá, P.C.M. Carvalho and F.T. Brito. SanUSB: Educational software for the teaching of microcontroller technology. Science & Cognition. 2009 Nov, vol.14, no.3, pp.134-144.
 R.I.S. Pereira, S.C.S. Jucá and P.C.M. Carvalho. “Online Monitoring System for Electrical Microgeneration via Embedded WiFi Modem”. IEEE Latin America Transactions. 2016 July, vol.14, no.7, pp. 3124-3129, doi, 10.1109/TLA.2016.7587611
 R.S. Gonçalves, “Application of LEGO Mindstorms Kits for Teaching Mechatronics Engineering” IJIER, v. 5, no. 10, 2017, pp.99-113.
 A.C. Alves and S.C.S. Jucá. Wireless Monitor – Free web application to receive and display data from IoT equipment. III Regional School of Informatics of Piauí. Book Anais - Articles and Minicourses. 2017 jun, vol.1, no.1, pp.117-122.
 P. Korop. How to create a Laravel 5 package in 10 easy steps. Laraveldaily [Internet]. 2017 - [cited 2018 July 17]. Available from: https://laraveldaily.com/how-to-create-a-laravel-5-package-in-10-easy-steps/.
 MATLAB. ThingSpeak [Internet]. 2017 - [cited 2018 July 17]. Available from: https://www.mathworks.com/hardware-support/thingspeak.html.
 K.N. Sathish, B. Vuayalakshmi, P.R. Jenifer and A. Shankar. Iot based smart garbage alert system using arduino uno. IEEE Region 10 Conference (TENCON), 2016, pp. 1028–1034. doi: 10.1109/TENCON.2016.7848162.
 X. Cheng, J. Lu and W. Cheng. A survey on RFID applications in vehicle networks. In Beijing CH. Proceedings of the International Conference on Identification, Information, and Knowledge in the Internet of Things; 2016 Oct, 22-23, pp. 146-151.
 A. Javed, H. Larijani, A. Ahmadinia, R. Emmanuel, M. Mannion and D. Gibson. “Design and implementation of cloud enabled random neural network based decentralized smart controller with intelligent sensor nodes for HVAC”. IEEE Internet of Things Journal. 2016 nov, vol.4 no.2, pp.1-11, doi: 10.1109/JIOT.2016.2627403.
 A. Vadnerkar, S. Figueiredo, N. Mayo and R. Kearney. “Design and validation of a biofeedback device to improve heel-to-toe gait in seniors”. IEEE Journal of Biomedical and Health Informatics. 2017 Feb, vol.22 no.1, pp.1-7, doi: 10.1109/JBHI.2017.2665519.
 M. Sha, D. Gunatilaka, C. Wu and C. Lu. “Empirical study and enhancements of industrial wireless sensor-actuator network protocols”. IEEE Internet of Things Journal. 2017 june; vol.4 no.3, pp.1-8, doi: 10.1109/JIOT.2017.2653362.
 A. Yavilevich. Arduino sound level meter and spectrum analyser [Internet]. 2017 - [cited 2018 July 17]. Available from: https://blog.yavilevich.com/2016/08/arduino-sound-level-meter-and-spectrum-analyzer.
 R. I. S. Pereira, P. C. M. Carvalho, and S. C. S Jucá. “WiFi Data Acquisition System and online monitoring applied to thermoelectric microgeneration modules”. International Conference on Renewable Energies and Power Quality (ICREPQ’15). v. 13, 2015 pp.370.
 Android Boys Lab. Sound Meter PRO [Internet]. 2017 - [cited 2018 July 23]. Available from: https://play.google.com/store/apps/details?id=kr.aboy.sound.
 R. I. S. Pereira, S. C. S. Jucá, and P. C. M. Carvalho. "Online Monitoring System for Electrical Microgeneration via Embedded WiFi Modem" IEEE Latin America Transactions, vol. 14, no. 7, 2016 pp. 3124-3129.
 R. I. S. Pereira, I. M. Dupont, P. C. M. Carvalho, P. C. M. Jucá. “IoT embedded linux system based on Raspberry Pi applied to real-time cloud monitoring of a decentralized photovoltaic plant”. Measurement Journal. v. 114, 2016 pp.3124-3129.