Affordable optical seam tracking‐ meta torch systems break the price barrier

Looks at the new generation of MetaTorch sensor systems which cost a fraction of the original sensors produced ten years ago as well as being smaller in size, lighter and having greater flexibility. Describes the basic principles of optical seam sensing using state of the art charge‐coupled devices [CCDs], laser diodes and a microprocessor which controls and monitors the major functions. New vision software interfaces to most industrial robots and welding machines for both ormal arc‐welding and laser welding. Concludes that previously the widespread use of adaptive vision sensing has been prevented by its relatively high price; the new price structure is likely to have an impact on the use of intelligent sensing systems for many industrial applications.