The ML100-8-HW version with background evaluation is based on the triangulation principle. The receiver, consisting of a near-field element and far-field element, is able to clearly distinguish between a background, such as a metal frame, and an object in the detection area. In doing so, the sensor references the determined background. The object is detected if, due to the geometrical arrangement, more light falls on the near-field element than on the far-field element. It is also recognized if no light reaches the receiver, e.g., if the light is reflected by a shiny object. This enables operation without the need for reflectors. The diffuse mode sensor also reliably detects flat objects or objects with low reflectivity in front of a close background, e.g. black rubber parts on conveyer belts.
- Sensor with background evaluation based on triangulation principle
- Use on low contrast targest, for example black on black