| 摘要 |
<p>A tilt sensing device (10) comprises an enclosure and an imbalanced disc (11) freely rotatable about a horizontal axis (13) within the enclosure. The disc has a circumference (18) with first and second pairs of maskings (30, 31, 40, 41). Each masking provides an irregularity in optical reflectivity. The first and second pair of masking are associated with first and second reflectivity sensors (14, 15) mounted adjacent the circumference of the disc. The sensors sense reflectivity of the circumference and transmit signals when an irregularity is sensed, to indicate a first or second degree of tilt. Magnets (20, 21) provide damping for vibration of the disc. The device is suited to rugged applications and off-road or field vehicles such as bulldozers, tractors or semi-trailers.</p> |
