Sponsor: Intel By: Curtis Bower, Achyut Lamichhane, Kegan Pankratz, Drew Flerchinger, Skyler Hoeft, John Behrend

Overview Background Project Summary Physical System Microcontroller and Touch Screen LCD Control System Conclusions

Background Intel’s problem Many testing machines Machines are too specific Want to expand to be able to test different types and sizes of processor with one machine Solution to Intel’s problem Build a new system that uses heated water to test processors under high temperatures New system will be able to test a variety of processors

Project Summary Build a heated water delivery system Use a microcontroller to read sensors Microcontroller sends commands to pumps, heater, and valves Create a stand alone control system Use a touchscreen LCD to create a easy to use HMI

Physical System Made up of one pump that circulates water though the heater and chiller. Valves control where a major portion of water runs. Sensors are used throughout system to gain information from the circulated water

Microcontroller Reads sensors and uses values to control physical system Values read from sensor are sent over serial to LCD to be displayed Interrupt driven control system uses sensor inputs to drive both heater and pump values

Touch Screen LCD Menus that allow users to easily navigate through and change values Each menu is specific to different parts of the physical system. Set point menu allows users to change the temperature of the water and the flow or pressure the pump outputs An easy to use key pad allows users to enter new values PID Values Set Point Values MAIN MENU Temp: Set Point: 22.0 Flow: 2.0 Set Point:2.5 Pressure: 2.15 Set Point: 3.4 Current PID: FLOW Menu

PID value and Set point Menu Set Point -> Temperature Current: Set Point: 30.0 Flow Current: 1.37 Set Point: Pressure Current: Set Point: > X Flow PID Values -> P Value Current: 13 I Value Current: 1 D Value Current: 0 -> X _ _ _ _ _ _ _/ \ / \ / \ _ / MAX: 32MIN: 23 _ _ _ _ _ _

Keypad Menu KEYPAD X <- OK VAR: TEMP 3.145

Communication Values sent to LCD are preceded with a byte that consists of two nibbles which represent an X coordinate and a Y coordinate This allows the Microcontroller to print values anywhere on the LCD Values sent to the Microcontroller are delimited by a single byte that represents values that are being changed or menus

Control System Interrupt driven Interrupt ticks every 10 milliseconds Adaptive LMS(Least Mean Squared)

Conclusions Micro SCADA system System contains RTC unit and HMI These systems are very limited.

Q & A