Accurate Indoor Sound Level Measurement on a Low-Power and Low-Cost Wireless Sensor Node
Wireless sensor networks can provide a cheap and flexible infrastructure to support the measurement of noise pollution. However, the processing of the gathered data is challenging to implement on resource-constrained nodes, because each node has its own limited power supply, low-performance and low-...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-07-01
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| Series: | Sensors |
| Subjects: | |
| Online Access: | http://www.mdpi.com/1424-8220/18/7/2351 |
| _version_ | 1811279244003639296 |
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| author | Vladimir Risojević Robert Rozman Ratko Pilipović Rok Češnovar Patricio Bulić |
| author_facet | Vladimir Risojević Robert Rozman Ratko Pilipović Rok Češnovar Patricio Bulić |
| author_sort | Vladimir Risojević |
| collection | DOAJ |
| description | Wireless sensor networks can provide a cheap and flexible infrastructure to support the measurement of noise pollution. However, the processing of the gathered data is challenging to implement on resource-constrained nodes, because each node has its own limited power supply, low-performance and low-power micro-controller unit and other limited processing resources, as well as limited amount of memory. We propose a sensor node for monitoring of indoor ambient noise. The sensor node is based on a hardware platform with limited computational resources and utilizes several simplifications to approximate more complex and costly signal processing stage. Furthermore, to reduce the communication between the sensor node and a sink node, as well as the power consumed by the IEEE 802.15.4 (ZigBee) transceiver, we perform digital A-weighting filtering and non-calibrated calculation of the sound pressure level on the node. According to experimental results, the proposed sound level meter can accurately measure the noise levels of up to 100 dB, with the mean difference of less than 2 dB compared to Class 1 sound level meter. The proposed device can continuously monitor indoor noise for several days. Despite the limitations of the used hardware platform, the presented node is a promising low-cost and low-power solution for indoor ambient noise monitoring. |
| first_indexed | 2024-04-13T00:51:18Z |
| format | Article |
| id | doaj.art-951fcd1026d647b98156a9dc3a18c18d |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-13T00:51:18Z |
| publishDate | 2018-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-951fcd1026d647b98156a9dc3a18c18d2022-12-22T03:09:53ZengMDPI AGSensors1424-82202018-07-01187235110.3390/s18072351s18072351Accurate Indoor Sound Level Measurement on a Low-Power and Low-Cost Wireless Sensor NodeVladimir Risojević0Robert Rozman1Ratko Pilipović2Rok Češnovar3Patricio Bulić4Faculty of Electrical Engineering, University of Banja Luka, 78000 Banja Luka, Bosnia and HerzegovinaFaculty of Computer and Information Science, University of Ljubljana, 1000 Ljubljana, SloveniaFaculty of Computer and Information Science, University of Ljubljana, 1000 Ljubljana, SloveniaFaculty of Computer and Information Science, University of Ljubljana, 1000 Ljubljana, SloveniaFaculty of Computer and Information Science, University of Ljubljana, 1000 Ljubljana, SloveniaWireless sensor networks can provide a cheap and flexible infrastructure to support the measurement of noise pollution. However, the processing of the gathered data is challenging to implement on resource-constrained nodes, because each node has its own limited power supply, low-performance and low-power micro-controller unit and other limited processing resources, as well as limited amount of memory. We propose a sensor node for monitoring of indoor ambient noise. The sensor node is based on a hardware platform with limited computational resources and utilizes several simplifications to approximate more complex and costly signal processing stage. Furthermore, to reduce the communication between the sensor node and a sink node, as well as the power consumed by the IEEE 802.15.4 (ZigBee) transceiver, we perform digital A-weighting filtering and non-calibrated calculation of the sound pressure level on the node. According to experimental results, the proposed sound level meter can accurately measure the noise levels of up to 100 dB, with the mean difference of less than 2 dB compared to Class 1 sound level meter. The proposed device can continuously monitor indoor noise for several days. Despite the limitations of the used hardware platform, the presented node is a promising low-cost and low-power solution for indoor ambient noise monitoring.http://www.mdpi.com/1424-8220/18/7/2351environmental noise monitoringnoise sensingA-weightinghardware platformwireless sensor network |
| spellingShingle | Vladimir Risojević Robert Rozman Ratko Pilipović Rok Češnovar Patricio Bulić Accurate Indoor Sound Level Measurement on a Low-Power and Low-Cost Wireless Sensor Node Sensors environmental noise monitoring noise sensing A-weighting hardware platform wireless sensor network |
| title | Accurate Indoor Sound Level Measurement on a Low-Power and Low-Cost Wireless Sensor Node |
| title_full | Accurate Indoor Sound Level Measurement on a Low-Power and Low-Cost Wireless Sensor Node |
| title_fullStr | Accurate Indoor Sound Level Measurement on a Low-Power and Low-Cost Wireless Sensor Node |
| title_full_unstemmed | Accurate Indoor Sound Level Measurement on a Low-Power and Low-Cost Wireless Sensor Node |
| title_short | Accurate Indoor Sound Level Measurement on a Low-Power and Low-Cost Wireless Sensor Node |
| title_sort | accurate indoor sound level measurement on a low power and low cost wireless sensor node |
| topic | environmental noise monitoring noise sensing A-weighting hardware platform wireless sensor network |
| url | http://www.mdpi.com/1424-8220/18/7/2351 |
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