This discrete image is brought to the processor to be processed and analyzed. The pixels can be analyzed as a whole or individual portions of the image can be evaluated. The first of many applications is to inspect the assembly processes. Alternative error proofing either has the complete assembly process to be automated or the operator must inspect his or her own work. In the automotive world where zero defect tolerances are to be expected, the few errors that even the most competent operators make is unacceptable.
Vision systems allow each step of the assembly process to carefully monitored.
After each step is verified a positive indication is given to the operator and after the operation is complete the vision system will give a signal to the PLC that the operation is complete. Automotive Loranger manufacturing use a vision system to detect flaws in molded plastic parts. The ignition components are produced in a four cavity mold with less then a five second cycle. Loranger manufacturing used a Power Vision 90 from Acuity Imaging System with two cameras and a two step process. The Power Vision 90 signals to an arm to reject a bad part.