wireless monitoring system of gas detector - Faculty of Electrical ...

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(which is 300ppm), the actuator circuit comes into action and the siren and exhaust fan
are autonomously turned on through relay[].
Besides that, there is another related paper “Design, Characterization and
Management of a wireless sensor Network for Smart Gas monitoring” by Faculty of
Electrical Engineering and Computing, University of Zagreb, Croatia[5]. The system
represent with energy management that involves three levels which are sensor level,
node level and lastly network level. The sensor board is designed with a wireless sensor
network (WSN) node that can autonomously send the recorded data by wireless [5]. The
sensor board also contains with two modalities which are gas sensor and Pyroelectric
Infrared (PIR) sensor. The network is multimodal that used information from the PIR
sensor and neighbor nodes to detect the present of gas concentration and modulate the
duty cycle of the node. Figure 2.2 below shows the design of the location of sensor
placed in a different room.
Figure 2.2: Design of the sensor location [5]