Design of a smart sensor for dyebath concentration measurement in textile industry

Design of a new and smart type of dye concentration measurement sensor is outlined in this paper. Beginning from Beer's law for absorbance, we show each step of the design process. Our motivation is to decrease the total washing period and cost in textile dyeing. To achieve this the problem and the needs are determined in a concrete manner. Theoretical limits and optimal region of optical-based absorbance measurement are identified. These results shape the target smart sensor in both hardware and software.