Week 5

Week 5: Progress ReportTeam 10 Members:

Shom Bhandari Nobuto Ishii

Brian Mckenna Tomo Yamada

Overview of Status of Analysis, Design, Fabrication, Tests, etc.

Overflow detection:
- Built and tested a wet sensor out of a thin aluminum foil and plastic
- Programmed in LabView and tested-- it works!
Pump Control:
- Created a Labview software to measure the temperatures in DUT and TU and control the fluid pump depending on the varing parameter called theta (resistance)

theta = (Th-Ta)/Pa

Power Management for DUT
- Designed as shown below but hasn’t been tested because Adaq software is not activated yet

Accomplishments from Previous Week

Created a LabView program for the pump control
- Tested in RTD sensor, software is working good
Design power management for DUT is finalized as shown in figure above
Overflow sensor was built and tested
- works great

Goals for Next Week (list names after each item). Use specific and measurable objectives.

Sponsor Comments from Last Meeting and Actions Taken to Address these Comments

Overflow sensor:
- Although the sponsor told you that your concept is not applicable to
- the real world product, the sensor is still applicable to this project. Just keep in mind that your sensor needs to be really thin.
Dispensing water:
- Control of the water will be done through controlling speed of the motor. Regarding on using RTD directly to control the motor, this could be an issue because relationship between temperature and amount of water being dispense will be nonlinear after certain point. The program that you need to create must be exportable.
Comparator circuit:
- Power being supplied to the DUT needs to be calculated using Voltage and Current being fed through.
  - suggestion by the instructor:
    - buy/acquire RTD and test them out. Your sponsor may have bunch of them or you can simply buy them. They are only $10~$20 per RTD. This may be a good test before you use an expensive equipment you may want to consider the power and the temperature difference between the TU and The DUT for control algorithm.

Instructor Comments from Last Meeting and Actions Taken to Address these Comments

Overview of How to use Adaq software.
Scheduled Thursday 10:30AM to pick up the equipment. (email Jim to retrieve license number)
Overflow sensor: the concept is nice, but in real world, there aren’t much space to work around DUT and TU, so it may not be a good way to do it.
Solid State Relay is there to make sure that we don’t send too much power to the DUT
Pump: looks good!

Risks and Areas of Concern

Integration of overflow sensor and pump control system into unified Labview program.
Attaching overflow sensor to TU effectively.
Unknown area of Hot spot effecting the water control

Resources or Information Required but not Available

Adaq software is not activated
The DAQ currently being used does not support PWM function so might have to buy new one. But still trying to figure out if we can use the one we have in alternative way
Although prototype sensor built from Aluminum foil and plastic bag, copper foil and better insulator being pursued for more sensitive feedback.

Schedule

Week 5 (2/6 ~ 2/10)

> Installing Software (ADAQ) to control TU and DUT

> Receiving pump and pump-tube set

> Purchasing Injector Needle, Silicon Tube, Insulating Layer,

Copper Foil

Week 6 (2/13 ~ 2/17)

> Receiving All components for the project

> Completing LabVIEW feedback controlling systems

Week 7 (2/20 ~ 2/24)

> Finalization of assembly

> Testing LabVIEW feedback controlling systems

> Test Run for entire systems

Week 8 (2/27 ~ 3/2)

> Optimizing designs and systems

Week 9 (3/5 ~ 3/9)

> Optimizing designs and systems (Final Checkup)

Budget (list amount spent and amount remaining)

Progress on Webpage

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