A close-range altitude-hold solution for wall-hugging ascent and descent cleaning. The LQ series starts ranging at 0.09 m with stable repeatability, keeping cleaning drones safe while flying against a glass facade.
Construction. Facade cleaning machines move up and down the glass at working distances of 0.1–1 m, where radar blind zones and glass-reflection multipath are the main risks. The vision module ranges effectively from 0.09 m, so altitude data stays continuous and jump-free along the wall. (Starts at close range / stable against walls / lightweight integration)
Urban Services. Cleaning the exteriors of tall urban buildings is routine work for property managers and professional cleaning crews, and the equipment must deploy fast with low maintenance. The vision solution is plug and play — a UART link to the flight controller keeps airframe retrofit cost and lead time low. (Fast integration / low maintenance / full model coverage)
No close-range dropout
Ranging starts at 0.09 m, eliminating the wall-hugging blind zone; ranging still works with the cleaning disc right against the facade.No jumps on contact
1% repeatability keeps the altitude output steady while the cleaning mechanism contacts the facade and airflow disturbs it.Low retrofit barrier
UART direct link to the flight controller plus APM / PX4 compatibility make retrofitting existing cleaning airframes low-cost.
Construction
Urban Services

Compact 63×23×12.8 mm body, 0.14–30 m range, indoor and outdoor flight positioning

105×23×13.3 mm, 0.4–50 m range, all-scenario indoor and outdoor positioning

Ultra-wide 0.09–160 m range for high-altitude work and tethered altitude hold