Automated Industrial Wind Tunnel Controller By Daniel Monahan and Nick DeTrempe Advised by Dr. Aleksander Malinowski Customers are Dr. Scott Post and Dr. Martin Morris Further assistance provided by Mr. Christopher Mattus 1

Presentation Agenda Project Overview Objectives System Block Diagrams Hardware Discussion Communications Server LabView Testing and Debugging Questions 2

Overview Of Project 3

Objectives Remotely turn the wind tunnel off, adjust the wind speed and adjust the position of the target object. Remotely view and record lift, drag and wind speed data, as well as target position. Allow for users to view the wind tunnel via webcams while controlling. 4

System Block Diagram 5

Wind Tunnel Block Diagram 6

Microcontroller Software 7

Hardware Discussion Omron G3NA-225B AC relays Dayton 1EGX1 double pole double throw switch Omron G3NA-D21B DC relay LMD H-Bridges FA-PO Linear Actuator LM 703 force sensors for lift and drag Setra pressure sensors Silicon Labs C8051F12o microcontroller 8

Relays to Control Remotely 9

Microcontroller 10

Actuator To Adjust Target 11

Lift and Drag Sensors 12

Communications Serial Port Interface “BO” – Turn the blower on “BS” – Stop the blower “DO” – Start opening the damper “DC” – Start closing the damper “DS” – Stop moving the damper “xnnnn” – x denotes the measured sensor “xnnnn” – nnnn denotes the measured value 13

Server The server is written in java and runs on a local machine at the wind tunnel Purpose is to communicate with the microprocessor and relay information to clients via TCP protocol 14

Server 15

LabView A LabView client program has been developed to allow for testing and configuring the wind tunnel control Figure 3: LabView Test Client Front Panel 16

LabView The client both displays data from and sends commands to the server, which relays the signals to microcontroller The front panel can be easily reconfigured to accept alternate methods of input or to display data differently The client is easily deployed as a packaged executable requiring only the LabView engine to run. The program also has the capability to record data received from the wind tunnel 17

Overview of LabView “Code” Angle Control Loop Wind Speed Calculator Automatic Wind Speed Control Loop 18

LabView 19 Control Loop for actuators angle position

LabView Air Speed Calculated From the following equations 20

LabView LabView implementation of the equations from the previous slide to give the wind speed in the tunnel 21

LabView Wind Speed Control Loop: Opens and closes damper based on desired wind speed 22

Testing and Debugging Hyperterminal was used to test and debug the microcontroller software apart from LabView A test server was created based on the actual server. It allowed the LabView client to be tested in lab apart from the wind tunnel 23

Overall Progress 24

Questions? 25