Energy-Efficient Gas Recognition System with Event-Driven Power Control

• Main Authors: Huang, Chun-Ying, 黃羣穎
• Other Authors: Hwang, Wei
• Format: Others
• Language: en_US
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/19675631054628803747

碩士 === 國立交通大學 === 電子工程學系 電子研究所 === 103 === For sensor-based applications, an application-specific architecture is necessary to realize an energy-efficient system. Particularly in the application of electronic nose, a low-energy gas recognition system is essential. For metal oxide sensor array, the energy-efficient algorithm-architecture co-design of gas recognition system with event-driven pseudo-zero-leakage structure is proposed. The proposed low energy gas recognition system can recognize four different gases with concentration analysis, achieving 100% recognition accuracy for gas type and 89.4% accuracy for concentration analysis. To achieve energy efficiency further, a near-threshold SRAM, and a low-voltage embedded ReRAM are integrated into the proposed system separately. We analyze the system in TSMC 65nm LP CMOS process, and the total energy in a sensing period is 8.62uJ, and 2.04uJ, respectively. Especially, we can utilize a ReRAM to realize a pseudo-zero-leakage recognition system, an ultra-low-energy architecture.