초록 ▼

A location system is used in a vehicle moving within an area at a selected speed and in a selected direction. A heading sensor provides a heading signal representing the direction of movement of the vehicle. A speed sensor provides a speed signal based on available reference signals representing the

A location system is used in a vehicle moving within an area at a selected speed and in a selected direction. A heading sensor provides a heading signal representing the direction of movement of the vehicle. A speed sensor provides a speed signal based on available reference signals representing the speed of the vehicle. A storage device stores initial position data representing a selected initial position of the vehicle and checkpoint data representing a navigation checkpoint location. A database stores a plurality of records which each include geographic information data representing selective aspects of the area. A processor estimates a current position signal representing an estimated current position of the vehicle based on values of the heading signal, values of the speed signal, the initial position signal, and on previous values of the current position signal. Values of the current position signal correspond to records stored in the data base. A correction device selectively corrects the current position signal based on selected position inputs which indicate an approximate vehicle position relative to the navigation checkpoint location. An alerting device obtains an alerting signal indicating that the vehicle has reached a selected region within the area based on the current position signal and the geographic information data.

대표청구항 ▼

A location system for use in a farm implement vehicle moving within an agricultural field having a perimeter and moving in a selected direction, the location system comprising: heading sensor means including a satellite sensor and a second heading sensor for providing a plurality of current heading

A location system for use in a farm implement vehicle moving within an agricultural field having a perimeter and moving in a selected direction, the location system comprising: heading sensor means including a satellite sensor and a second heading sensor for providing a plurality of current heading signals representative of the current selected direction of movement of the vehicle from those available to be chosen during the operation of the vehicle in the agricultural field; a signal selector adapted to select between the plurality of current heading signals; speed sensor means for providing a current speed signal based on available reference signals, the speed signal representative of a current selected speed of the vehicle; storage means for storing initial position data indicative of a selected initial position of the vehicle and for storing checkpoint data indicative of a position of a navigation checkpoint location; database means including a digital memory for storing a plurality of records, each record including geographic information data representing selected aspects of the field comprising soil attributes and corresponding positional data; processor means for estimating a current position signal representing an estimated current position of the vehicle based on values of the selected heading signal, values of the speed signal, the initial position data, and on previous values of the current position signal, wherein values of the current position signal correspond to records stored in the database means; correction means for selectively correcting the current position signal based on selected position inputs which indicate an approximate vehicle position relative to the position of the navigation checkpoint location; alerting means for delivering an alerting signal to an operator of the vehicle based on the current position signal and the geographic information data stored in the database means, the alerting signal indicative of the vehicle reaching a selected region of predetermined stored geographic data within the field; and a user interface adapted to receive position inputs from the operator.