| 摘要 |
A lift system comprises: a rail: a carriage assembly comprising a seat or platform for supporting a person to be conveyed along the rail;and drive means coupled to the carriage assembly and adapted to engage the rail and drive the carriage assembly along the rail. In one aspect the system comprises levelling means operable to adjust an orientation of the carriage assembly with respect to the rail, and the carriage assembly comprises: an accelerometer arranged to provide an output signal indicative of an inclination of the seat or platform with respect to a horizontal plane; and control means arranged to receive the output signal and control the levelling means to adjust the orientation to maintain the inclination of the seat or platform substantially at a predetermined value or within a predetermined range. In another aspect the system comprises control means arranged to control the drive means; slope indicating means; and curvature indicating means, and the control means is adapted to use signals indicative of slope or curvature to control a speed at which the drive means drives the carriage assembly along the rail according to position along the rail. |
