Page 47 - Mobility Management, July/August 2021

Drop-off Protection
LUCI manages the stability of the wheelchair by monitoring ground features, including the slope of the ground and ramps as well as drop-offs such as curbs and steps.
MINIMUM
DETECTION RANGE
Objects closer than 3 cm (1.2 in) to the wheelchair may not be registered accurately
Measured from the edge of the wheelchair
MAXIMUM
DETECTION RANGE
Forward: up to 3.5 m (11.5 ft) Backward: up to 1 m (3.3 ft) Sides: up to 2 m (6.6 ft)
Measured from the edge of the wheelchair
STEP DETECTION
LUCI will detect steps with a height greater than the wheelchair’s published step threshold
See the wheelchair user manual for the published step threshold
SLOPE DETECTION
LUCI will detect slopes with an angle greater than the wheelchair’s published slope threshold
See the wheelchair user manual for the published slope threshold
LIMITATIONS
Conditions that may challenge the sensors are sudden changes in light level and extremely rough terrain. Mud, snow, water, sand and other soft surfaces may be incorrectly detected as rigid and/or safe surfaces.
LUCI’s edge detection attempts to prevent users from driving off a curb, stairs, or other drop-off that would cause the wheelchair to tip over based on the published curb capability of the base wheelchair. LUCI will allow users to drive down small steps (~3-4inches for most wheelchairs depending on make and model) which are within your chair’s specified capability, but will monitor for dangerous curbs, and steps.
Drop-off protection is like emergency braking, pedestrian detection, or air bags in an automobile – please don’t test it on purpose! If you drive at a high speed settings toward an unsafe drop- off, LUCI may not be able to overcome the momentum of the chair to bring the chair to a complete stop in time. Just like with collision avoidance, once LUCI detects a drop-off, LUCI will slow the chair; assisting the driver to be aware that there is a drop-off ahead.
STOPPING POINT
13
LUCI® SAFETY REPORT