Simulating the power consumption of large-scale sensor network applications
SenSys '04 Proceedings of the 2nd international conference on Embedded networked sensor systems
LaserSPECks:: laser SPECtroscopic trace-gas sensor networks - sensor integration and applications
Proceedings of the 6th international conference on Information processing in sensor networks
Combustible gases and early fire detection: an autonomous system for wireless sensor networks
Proceedings of the 1st International Conference on Energy-Efficient Computing and Networking
Development of Remote Waste Gas Monitor System
ICMTMA '10 Proceedings of the 2010 International Conference on Measuring Technology and Mechatronics Automation - Volume 01
Wireless sensor networks for environmental monitoring powered by microprocessors heat dissipation
Proceedings of the 1st International Workshop on Energy Neutral Sensing Systems
| Hi-index | 0.00 |
Wireless Sensor Networks (WSN) have recently been applied in various monitoring applications including hazardous gases detection. However, being a major power consumer of a sensor node, off-the-shelf gas sensors significantly constrain its lifetime. In this paper we present a WSN for hazardous gases detection with a special focus on the power consumption of the sensor node. The sensor node is designed on the basis of a planar catalytic sensor with improved power consumption characteristics. The power supply of the node is divided into digital and analogue parts. This is done to guarantee digital remote control of the device even when the analogue power source has already been depleted by the sensing circuit. In addition, we propose a differential gas measurement approach along with specific heating pulses for the sensor to secure substantial energy saving. The resulting average power consumption is 1.45 and 2.64 mW for the gas sensor and the sensor node respectively. With our techniques, the sensor node lifetime improves from 187 days up to 641 days.