Chemical Sensors Notes SP2010

• Team Members: Joy Chiang
• PhD Supervisor: Vanessa
• Faculty Supervisor: Arye Nehorai
• Goal:
  • Determine the ability (accuracy and precision) of the current

sensors to measure concentration

• • • Test on substance like ethanol that the sensors are designed for
    • If accuracy and precision are sufficient for source localization,

continue with these sensors, otherwise, we will have to find different sensors

• • • Test whether acquisition time can be shortened for concentration measurement
    • Test whether performance improves with a different experimental

setup (e.g., using a fan to blow air across the sensor)

• • Incorporate digital resistors into the circuit design to allow

on-line optimal concentration estimation

• • Program a function in Matlab to estimate the direction to the

source from the concentration measurements of two sensor arrays

• • • Test with simulations in Matlab
  • Incorporate the direction estimation into a guidance program for

the robotic platform

• • • The robot should move to seek out the source of the odor
    • It should update its direction of movement periodically according to

new direction estimates