Research on the Product Design of Wood Identification based on Electronic Nose

Rapid and accurate identification of timber species plays a key role in economic development, timber import and export trade, and the identification of precious timber. Meanwhile, it has a profound impact on the protection of rare species and stabilization of the timber market. However, traditional wood identification methods identify wood by its macroscopic and microscopic characteristics, which is a complex and professionally process. The newly developed methods, such as the DNA barcoding method and the stable isotope method, have limitations such as a long test period and high cost. Therefore, this paper set out to explore and develop a new wood identification method by using electronic nose technology. Specifically, it focuses on the volatile gases of wood, and the gas sensor array is used to obtain odor fingerprints to clearly distinguish wood types. In this paper, the sensor array was designed using MQ series sensors and was able to distinguish between two types of woods, dye rosewood and sandalwood rosewood. Finally, the paper concluded with a design demonstration of the appearance of the wood recognizer and the mobile application interface.