Automating the process of registration of products produced on the assembly conveyor

Synchronous systems are ideal for high-volume assembly of small products with long life cycles. Think spark plugs or syringes. Synchronous systems are driven by a central camshaft that rotates at a constant speed. Each assembly station is associated with one or more cams on the shaft. As the cams rotate, they trigger the stations to perform their tasks. The problem with synchronous systems is that they're not that flexible. Adding an assembly station can be difficult, because it may disrupt the carefully controlled timing of the system. Another problem is timing. Each process on a synchronous line needs to take about the same amount of time. So, processes that takes longer than a second or two testing, for example are difficult to integrate.