Figure 4From: Evaluation of an intelligent wheelchair system for older adults with cognitive impairmentsEnvironment of use testing scenarios. Anti-collision and navigation are tested by driving the wheelchair towards different objects. A 3Â m distance was set in order for the wheelchair to achieve a constant velocity of 0.16Â m/s. For anti-collision testing: A) stationary objects on centerline; B) moving person that steps onto the centerline when wheelchair is within 700Â mm of the person. For navigation testing: C) object on left of centerline; D) object on right of centerline.Back to article page