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METHOD AND APPARATUS FOR CONTINUOUS GAS MONITORING USING MICRO-COLORIMETRIC SENSING AND OPTICAL TRACKING OF COLOR SPATIAL DISTRIBUTION
METHOD AND APPARATUS FOR CONTINUOUS GAS MONITORING USING MICRO-COLORIMETRIC SENSING AND OPTICAL TRACKING OF COLOR SPATIAL DISTRIBUTION
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机译:微量空间色散光学跟踪和连续气监测的方法和装置
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摘要
A micro-colorimetric sensor for sensing target chemicals that converts time sequence information into a spatial distribution of color. By tracking the spatial color distribution, chemical exposure over time is thus detected, which overcomes the limitation of traditional colorimetric sensors. A porous media is coated on a top surface of the substrate. Multiple sensing chemicals are fused in parallel linear channels into the porous media coating. A plate is affixed over the substrate top surface to cover the plurality of parallel linear channels. An air sample is diffused along the porous media to get a clear pattern of spatial color distribution and color images are captured. Optical parameters like gradient of spatial color distribution, intensity, and absorbance, etc., can be tracked to calculate analytes concentrations.
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