| 摘要 |
<p>An improved treadmill comprises a motor (36) driven endless belt (12), sensors (50, 52) located below an upper run of the belt for sensing the position of a user (16), and a controller (54) for controlling the speed of the belt in accordance with the position of the user relative to the sensors. The detection or lack of detection of the user by the sensors can cause the belt to accelerate, decelerate, remain at a constant speed, or stop. A proper sequence of user detections by the sensors permits the controller to initiate an automatic speed adjusting system. The controller also provides a safety system for stopping the belt. In one embodiment, the controller stops the belt upon a lack of the sensors detecting the user. In another embodiment, a safety sensor is mounted on an upper surface of a member located proximate the belt, and the controller stops the belt when the safety sensor senses the user.</p> |
