Centre for Applied Autonomous Sensor Systems, Öebro University, Örebro SE-70182, Sweden.
Sensors (Basel). 2012 Nov 27;12(12):16404-19. doi: 10.3390/s121216404.
We address the problem of detecting changes in the activity of a distant gas source from the response of an array of metal oxide (MOX) gas sensors deployed in an open sampling system. The main challenge is the turbulent nature of gas dispersion and the response dynamics of the sensors. We propose a change point detection approach and evaluate it on individual gas sensors in an experimental setup where a gas source changes in intensity, compound, or mixture ratio. We also introduce an efficient sensor selection algorithm and evaluate the change point detection approach with the selected sensor array subsets.
我们解决了从部署在开放式采样系统中的金属氧化物 (MOX) 气体传感器阵列的响应中检测远程气体源活性变化的问题。主要挑战是气体扩散的湍流性质和传感器的响应动态。我们提出了一种变点检测方法，并在气体源强度、化合物或混合比发生变化的实验设置中对单个气体传感器进行了评估。我们还引入了一种有效的传感器选择算法，并使用选择的传感器阵列子集评估了变点检测方法。
