... Vol. 5, No. 11, pp. 878 -882, Staples, E. & Viswanathan,S. (2005) . Odor Detection and Analysis using GC/SAW zNose. Electronic Sensor Technology, School of Engineering and Technology, National ... Vol. 5, No. 11, pp. 878 -882, Staples, E. & Viswanathan,S. (2005) . Odor Detection and Analysis using GC/SAW zNose. Electronic Sensor Technology, School of Engineering and Technology, National ... avoid sensors saturation. If the rear sensor has stronger reaction to the odor than the front sensor, that means the robot has passed the odor source and it has to turn around. If both sensors...