Geberkreise

Geberkreise, also known as encoder wheels or code discs, are essential components in various electro-mechanical systems for measuring rotational or linear movement. They are typically circular discs or strips marked with a pattern of opaque and transparent segments or reflective and non-reflective areas. As the Geberkreis rotates or moves linearly, a light source (often an LED) and a sensor (like a photodiode or phototransistor) are used to detect the changes in light transmission or reflection. This detection generates a series of electrical pulses. The pattern of these pulses can be decoded to determine the position, speed, and direction of the movement.

There are two primary types of Geberkreise: incremental and absolute. Incremental encoders generate pulses that indicate changes in position, requiring a reference point or homing sequence to establish a starting position. Absolute encoders, on the other hand, provide a unique code for each position, allowing for direct position determination without the need for homing. The resolution of a Geberkreis is determined by the number of segments or patterns it contains, with more segments leading to finer measurement precision. Geberkreise are widely used in industrial automation, robotics, printers, and measurement devices where accurate motion control is critical.