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Smart Sensors Network for Air Quality Monitoring Applications

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3 Author(s)
Octavian A. Postolache ; Inst. de Telecomun., Lisbon, Portugal ; J. M. Dias Pereira ; P. M. B. Silva Girao

This paper presents a network for indoor and outdoor air quality monitoring. Each node is installed in a different room and includes tin dioxide sensor arrays connected to an acquisition and control system. The nodes are hardwired or wirelessly connected to a central monitoring unit. To increase the gas concentration measurement accuracy and to prevent false alarms, two gas sensor influence quantities, i.e., temperature and humidity, are also measured. Advanced processing based on multiple-input-single-output neural networks is implemented at the network sensing nodes to obtain temperature and humidity compensated gas concentration values. Anomalous operation of the network sensing nodes and power consumption are also discussed.

Published in:

IEEE Transactions on Instrumentation and Measurement  (Volume:58 ,  Issue: 9 )