Department of Electrical Engineering, National Tsing Hua University/No. 101, Sec. 2, Kuang-Fu Road, Hsinchu 30013, Taiwan.
Sensors (Basel). 2013 Oct 22;13(10):14214-47. doi: 10.3390/s131014214.
Electronic noses have potential applications in daily life, but are restricted by their bulky size and high price. This review focuses on the use of chemiresistive gas sensors, metal-oxide semiconductor gas sensors and conductive polymer gas sensors in an electronic nose for system integration to reduce size and cost. The review covers the system design considerations and the complementary metal-oxide-semiconductor integrated technology for a chemiresistive gas sensor electronic nose, including the integrated sensor array, its readout interface, and pattern recognition hardware. In addition, the state-of-the-art technology integrated in the electronic nose is also presented, such as the sensing front-end chip, electronic nose signal processing chip, and the electronic nose system-on-chip.
电子鼻在日常生活中有潜在的应用，但受到其体积大和价格高的限制。本综述重点介绍了在电子鼻中使用电阻式气体传感器、金属氧化物半导体气体传感器和导电聚合物气体传感器进行系统集成，以减小尺寸和降低成本。综述涵盖了系统设计考虑因素和用于电阻式气体传感器电子鼻的互补金属氧化物半导体集成技术，包括集成传感器阵列、读出接口和模式识别硬件。此外，还介绍了电子鼻中集成的最新技术，如传感前端芯片、电子鼻信号处理芯片和电子鼻系统级芯片。
