2013 UNT RET Summer Training: Day 25 RET summer training

Day 25

Today was entirely devoted to simulating and videoing each of the controls. See videos below. The difficulty in simulating each control is that there are many factors that come into play- most importantly time. We needed to manipulate the environmental conditions in a lab that would otherwise be found in nature. Also, because we are working with parts that require a power source, the use of multiple outlets and power strips made our testing area fairly tight and problematic. Finally, we are working with electrical components that we all know do not mix well with water, so it took time when stationing for demonstration. Our final circuit system unfortunately was not soldered together so Vardhman needed to connect the appropriate wires for each control--again taking time. We have thought of a good way to cut time for Thursday's demo-- we will activate all controls in one tank (without fish), have a central location for V's laptop, have two power strips within arm's reach, station sensor cluster next to tanks lid (possible).

Demo:
For water level- we will take initial water level reading (say 18cm), set system to fill to a depth of 15cm, the pump will refill tank until this point; system (pump) should then turn off.

For pH-- we will take initial pH reading in an isolated container, create a mix of acidic solution, drop solution very close to sensor, watch dispenser activate (similar to video).

For DO levels-- we will not simulate as changes require much more time. We will show video on Friday.

Video for water refill:
http://www.youtube.com/watch?v=AKInu9I2P3Y&feature=youtu.be

Video for dissolved oxygen:
http://youtu.be/ODVzNSf-Km4

Video for pH:
http://www.youtube.com/watch?v=L-AN6qAb5Ws

We have more graphs:

With Vardhman's developed algorithm we plot only the averaged points of data rather than all 8 sec. points. This way our graph line shows steady and not sharp rise and falls.The graphs below are an extension of yesterday's graphs and not the data collected today with controls implemented. Those will come tomorrow.