论文标题
用金属氧化物传感器解决快速气体瞬变
Resolving fast gas transients with Metal-Oxide sensors
论文作者
论文摘要
电子嗅觉可以帮助检测和定位有害气体和污染物，但是自然环境的湍流提出了一个特殊的挑战：气味相遇是间歇性的，因此有效的电子鼻子必须能够解决短暂的气味脉冲。广泛使用的金属氧化物（MOX）气体传感器的缓慢响应使任务变得复杂。在这里，我们将高分辨率数据采集与基于Kalman滤波和绝对脱头抽样的处理方法相结合，以提取快速瞬变。我们发现我们的系统可以解决气味发作事件的精确时间，从而允许使用立体镜配置的一对Mox传感器进行方向估计。
Electronic olfaction can help detect and localise harmful gases and pollutants, but the turbulence of natural environment presents a particular challenge: odor encounters are intermittent, and an effective electronic nose must therefore be able to resolve short odor pulses. The slow responses of the widely-used Metal-Oxide (MOX) gas sensors complicate the task. Here we combine high-resolution data acquisition with a processing method based on Kalman filtering and absolute-deadband sampling to extract fast transients. We find that our system can resolve the precise time of odor onset events, allowing direction estimation with a pair of MOX sensors in stereo-osmic configuration.
