| 摘要 |
<p>TITLE TERRAIN POSITIONED TRACKING MEANS AND GUIDANCE SENSOR THEREFOR INVENTOR Zvi LIVNEH In a particular species of the preferred embodiment, the invention contemplates a land traveller such as a farm tractor pulling a passive load such as a plough, disc or the like, and means for directing control of the path of travel of the same over a field, and also for regulating or controlling the depth of penetration of the plough or disc means into the surface of the ground according to a predetermined irrespective of the terrain profile. The path control means consists of locating in a predetermined way, a track whose position is sensed by sensing means, preferably an electromagnet, and the relative position of the magnet is sensed by appropriate means such as resistence measuring devices (strain guages or variable resistors or reostats), photoelectric devices whose values are decoded through a microprocessor or other means whereby steering of the prime mover along the predetermined path is maintained.</p> |
