Study the narrative that follows and draw an activity diagram.
An assembly robot, Fuji Automatic Numerical Control (FANUC) in a production line do many tasks with speed
and precision, outperforming any human being. To do this they have a vision sensing system or machine vision,
and a force sensing system, accompanied by incredible axes configurations, that can provide as many as six
axes of motion.
Your company was approached to develop a production control system (PCS) for FANUC, and you as an
analyst has been allocated the task of designing the software module that inspects the items for quality
purposes. This means FANUC, through your control software, must pick items randomly from the production line
and inspect them for completeness of manufacture. It is of note that ‘pick’ is not just a physical activity, but
rather a process, consisting of sophisticated statistical procedures calculating randomness and it also involves
the vision component of the robot to identify an item on the production line.
So, the requirement is to develop a fully automated robot/ “system” that will inspect any item on the production
line and communicate the quality results to a ‘node’ that is part of the PCS.
The process is as follows: FANUC will pick up an item, reads the universal product code (UPC) and convey this
information to the PCS for validation purposes. If validated, the system will respond and inform FANUC to
proceed. Otherwise it will inform FANUC to place it on the rejection conveyer belt.
If validated, FANUC will then inspect the item and calculate a status check. After this check, it will send the state
information to the system. The system will update the database with the new information.
It will place the item back on the production line, picks up the next item, just to repeat the above procedure. At
the end of the day, it will send a production report to the system. The system will on its turn, send a copy to
production management.
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