Week 2

Team 10 Members:

Shom Bhandari

Brian Mckenna

Nobuto Ishii

Tomo Yamada

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

Design:

• Conceptualizing detection of overflow or underflow of water

• In progress of deciding on components to use for the Water application system

• Newly acquired Labview software allowed for experimenting of control VI:

• • Generating pump output based on RTD sensor is currently the best solution.

Accomplishments from Previous Week

• Have acquired LABVIEW from Mike Watson and Isaiah Freerksen

• Attended Workshops:

  • Machine Shops

  • MatCAD

  • CES Materials Database

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

• Choose main equipments and purchase

  • pump (Tomonori)

    • ministar DC Peristaltic Pump

    • Gilson Minipuls 3 Peristaltic Pump

  • DAQ (Nobuto)

    • NI USB 6009 by National Instruments

    • USB-1408FS by Measurement Computing

    • DT9812 by Data Transition

• Develop a simple loop system using LabVIEW program (Brian + Shom)

• Piping/Injectors (Shom)

  • Piping: Silicon Rubber

  • Injector:  Pipetting Needle

  • Fittings: Luer Steel or Brass

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

• we have set our regular meeting dates and time with the sponsor on Tuesday 10:30 AM. However, our sponsor cannot meet with us next week for his jury duty.

• Our control algorithm will need to be modified. Thermal resistance will be fed back into our control loop.

• TU heater has its own control system that reads DUT temperature and adjusts to the desired temperature. This is good news, since we can now focus on the injector control design.

• Equipments are not still available, but the sponsor will email us as soon as the equipments are ready to go

• At least 2 members will come back (hopefully this week), to learn the software (will take a day).

• Try to acquire a dedicated desktop for T-core box controls.

  • Brief lecture on Temperature Sensor Board (TSB)

• Try to get feel of how small amount of water we are going to be dealing with

  • pump shown at the meeting is sufficient, but make sure the range of water we are going to be dealing with and cheaper, the better

• The DAQ shown at the meeting is sufficient. Borrow the DAQ from UCSD

• Need to create OP AMP comparator circuit to prevent DUT from overheating

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

Summary:

•    the weekly progress report needs more details

•    A  flow chart of the system is needed to have visual idea of our project

•   Commercial DUTs may not have as many RTD sensors, so our initial idea of using all nine RTD sensors to detect overflow or underflow of water cannot be used in the control algorithm. However, this idea can be used to evaluate the performance of our system.

•    Typical commercial chips only have one RTD sensor or even none in order to have high performance chips. (i.e. more  RTD sensors on a chip, the lower the chip’s performance)

Q&A during the meeting:

Q: Any analysis done?

A: We've done evaporation testing. (how water evaporates between two plates under high temperature)

(question that came up by the professor)

• • • Have we done an algorithm analysis?

    • Have we done any power analysis of heater power, Thermal unit, any other analysis?

Q: Have you guys acquired your equipment from the sponsors?

A: We have not received our equipments from our sponsors. We are hoping to receive them at the next sponsor’s meeting. .

Q: How are you guys planning to control overflow?

A: using nine RTD sensors on the DUT and detect overflow or underflow by the temperature difference between temperature of water and temperature of air.

discussion about pump:

• Suggestion by the instructor:

  • positive displacement pump

  • simple hydraulic pump with control valve

    • we want to avoid using valve to control the flow for to avoid problem/ tragedy from failure of the valve

Risks and Areas of Concern

• We have to figure out how to detect overflow and underflow of water

• We have to perform a simple test to make sure equipments will function properly when put together

Resources or Information Required but not Available

• DUT and TU Devices

Schedule

Upcoming Milestones

• Finalizing Conceptualization

  • Need to construct final Block Diagrams for the control system

• Decided to use pump to control water

Update Gantt chart.

Budget (list amount spent and amount remaining)

• $0 spent

• $1500 Remain

Progress on Report and Webpage

Report:

• General format for the title page

• Completed the outline of a report

Webpage

• Developing “Home” page

• Made “Team” page