ET 472 FINAL EXAM

Purpose and System Operation

The purpose of this project is to develop an inspection and processing system similar to the exercise completed for laboratory number 2. However, for the final exam, LabVIEW will be used rather than a PLC. The system should inspect arriving parts for either short (good) or tall (bad) as they are carried through the inspection portion of the system. After inspection, parts will pass through a Zone Transition Sensor indicating that a part is present. If a good part is detected and the zone transition sensor is activated, a logical one will be output for tracking. Similarly if a bad part is present and the zone transition sensor is activated, a logical 0 will be the output for tracking. If the zone transition sensor is not activated, a logical 0 will also be the output indicating that no part was physically detected on the conveyor system (this is the system default).

Good Parts

When good parts are processed through the system, a shift register will track the parts inspection result and process at the downstream stations as follows: If a good part is detected, then the part will been shown as good at the inspected parts station, and processed through the clean, heat, and spray stations. The divert station will be not be activated, thus allowing good parts to continue straight through the system.

Bad Parts

When bad parts are processed through the system, the shift register will track the parts inspection result as a logical 0, transfer the bad parts through the clean, heat, and spray stations (using no resources) until the divert station is reached. At the divert station, parts will be pushed off the system to a spur conveyor for sorting, reprocessing, or scraping. Note: If no parts are present on the system (the zone transition sensor is not activated) then the system default will assume a bad part is present.

Requirements

The following requirements must be met to obtain credit for the exam.

1. Complete a LabView Sub VI for the arrival and inspection portion of the system. The Sub-VI should process as shown in the system diagram and as demonstrated in class. Set the timing of the Sub-VI to 500 ms.

2. Create a LabView main VI to track the parts through the system and control operations at downstream stations as described above. The main VI should perform the operations as shown in the diagram below and as demonstrated in class. Set the mail VI to run at 1 second.

3. Complete a written report in the same format as the usual lab report. The report must include the following:

a. Abstract 10 Points.

b. System requirements. 5 Points.

c. Symbols Chart 10 Points

d. Sequence Chart 15 Points

e. System Diagram (Front Panel and Block Diagram) 30 Points

f. Explanation of system operation (in detail). 30 Points.

4. NOTE: THE EXAM WILL BE DUE ON EVENING OF THE EXAM. YOU MAY SUBMIT THE EXAM EARLIER!

ET 472 FINAL PROJECT- EXAM SYSTEM DIAGRAM