Three-dimensional gas-plume tracking using gas sensors and ultrasonic anemometer
Three-dimensional gas-plume tracking using gas sensors and ultrasonic anemometer
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DOI：
10.1109/icsens.2004.1426387
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发表时间：
2004
期刊：
影响因子：
--
通讯作者：
H. Ishida;K. Yoshikawa;T. Moriizumi
中科院分区：
文献类型：
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作者：
H. Ishida;K. Yoshikawa;T. Moriizumi
提出了一种用于气源定位的新型传感系统。从气源释放的气体分子由气流携带，形成一种称为羽流的空中轨迹。作者所在的团队一直在开发智能传感系统和机器人，它们能够追踪气体流动并找到其源头，例如用于火灾报警以及可燃或有害气体泄漏的检测。本报告展示了首个在现实生活的室内环境中实现了对气体羽流的灵敏检测和可靠追踪的传感系统。使用超声风速仪来精确测量气流方向的三维矢量。在风速仪周围放置六个氧化锡半导体气体传感器以估计气体浓度梯度的三维方向。通过组合这两个矢量来获得追踪方向。实验结果表明，所提出的系统能够追踪在低至3厘米/秒的气流场中形成的气体羽流。
A new sensing system for gas-source localization is proposed. Gas molecules released from their source are carried by airflow and form an aerial trail called a plume. The authors' group has been developing smart sensing systems and robots that can track gas flows and find their sources for, e.g., fire alarming and detection of flammable or hazardous gas leakage. The present report demonstrates the first sensing system that has accomplished sensitive detection and reliable tracking of gas plumes in real-life indoor environments. An ultrasonic anemometer is used to accurately measure the 3D vector of the airflow direction. Six tin-oxide semiconductor gas sensors are placed around the anemometer to estimate the 3D direction of the gas concentration gradient. The direction to follow is obtained by combining those two vectors. The experimental results show that the proposed system can track a gas plume formed in a field of airflow as low as 3 cm/s.