A sensor device that converts elevator car position into electrical signals, enabling precise floor-level detection and leveling control.
Full Definition
A position encoder in an elevator system continuously measures the car's location within the hoistway and transmits data to the controller. Absolute or incremental encoders are mounted on the drive sheave or governor to track displacement. High-resolution encoders improve landing accuracy to within ±1 mm, essential for accessibility compliance. The encoder signal feeds floor-leveling algorithms, load-weighing compensation, and anti-nuisance logic. Encoder data is also used by overspeed governors and safety circuits to verify car velocity against permitted limits.
