Chemical Sensors SP 2011

Weeks 1-4:

We accomplished the following tasks:

- Added to the Matlab data processing algorithm to match peaks between sensor pairs. - Ordered 3 new pairs of sensors, so that each sensor within a pair does not collect data in a biased manner based on age.

Additionally, we made a game plan for the rest of the semester:

- Create new sensor array with new sensors and collect new unbiased data from the updated array.

- Email Dr. Raman about our research and a possible collaboration.

- Debug Matlab data processing algorithm.

- Ensure that Labview and Matlab data processing algorithms allows updated sensor array to reliably detect the location of the isopropyl alcohol source.

- Interface the data processing algorithm and sensor array with a robot, and develop a robot motion algorithm.

- Investigate the effects of using a shorter span of data on the accuracy of the signal processing algorithm.

Week 5:

- Created new sensor array.

- Fixed the matlab brute force algorithm

- Collected data from new sensor array, 5 trials for each distance away from the array for each side. This gave a total of 10 trials per distance, or 500 trials.

plan for this week:

- make presentation for next week (power point)

- 2 at each distance at each side

- drawing of sensor configuration

Week 6:

- Made more corrections to brute force algorithm, and processed trials from week 5. Unfortunately, the results still indicate that the sensor array detects the isopropyl alcohol source on one side of the array, no matter where the alcohol is actually located.

- Altered resistances in series with sensors in the circuit so that voltages produced by each sensor in a pair were consistent. I.e., sensors 1 and 2 should produce similar voltages when smelling alcohol, as should sensors 3 and 4, and 5 and 6.

Week 7:

Week 8:

Week 9:

Week 10:

Week 11: