What is Multiphase Product Signal Compensation?

Definition: Multiphase Product Signal Compensation refers to how a metal detector changes the shape of the teach area based on the specific product signals for each product passing through the aperture. This enables very flexible and precise product tracking, improving stability without sacrificing sensitivity.

Explanation: Non-linear (i.e., not rectangles) teach area thresholds are taught based on a sample of products at set-up time. During production, product effects can change due to temperature and product shape/consistency. Instead of just rotating the teach area to the predominant angle of each product signal, Multiphase Product Signal Compensation fits the teach area to the new signal at any angle or position. This is done on each product signal before the detection algorithm is run and not after the product has exited the aperture, thus only affecting the next product.

Benefits: The non-linear teach shape has clear performance benefits as compared to simple limits or rectangle thresholds. When Multiphase Product Signal Compensation fits this shape to each product in production, performance is further enhanced when compared to phase tracking approaches that rotate the phase-out rectangle based on the last product.

Multiphase Product Signal Compensation is run before detection, optimizing the current product and not relying on the next product’s signals matching the new phase in some way. This approach ensures full stability and sensitivity regardless of drift or change caused by product effect.

Not sure what system is right for your application? Trust our expertise to help guide you. Use our product selector tool to find the right fit your product line needs.