摘要:
A method and apparatus for monitoring in real time the removal of material from a land site such as a mine by a mobile machine. A digitized three-dimensional model of the site is stored in a digital data storage and retrieval facility. The site model includes a model of the material to be removed subdivided into regions of differentiating characteristics, for example ore grade or type. The machine is provided with means for generating digital signals representing in real time the instantaneous position in three-dimensional space of at least a portion of the machine as it traverses the site. Loading signals are generated corresponding to the removal of material from the site by the machine, and an instantaneous loading position for the mobile machine relative to the site is recorded in response to the loading signal. The invention preferably includes a payload measurement system which measures each discrete load of material removed. The characteristics of the site material at the recorded loading position are correlated to the material removed from the site. In a preferred form a dynamic site database is used to update the site as material is removed and direct the machinery in altering the site to a desired state.
摘要:
A method and apparatus for operating geography-altering machinery such as a track-type tractor, road grader, paver or the like relative to a work site to alter the geography of the site toward a desired condition. A first digital three-dimensional model of the desired site geography, and a second digital three-dimensional model of the actual site geography are stored in a digital data storage facility. The machine is equipped with a position receiver to determine in three-dimensional space the location of the machine relative to the site. A dynamic database receives the machine position information, determines the difference between the first and second site models and generates representational signals of that difference for directing the operation of the machine to bring the actual site geography into conformity with the desired site geography. In one embodiment, the signals representing the machine position and the difference between the first and second site models used to generate an operator display which is updated in real time. Alternately, the signals representing the difference between the first and second site models can be supplied to automatic machine controls for autonomous or semi-autonomous operation of the machine.
摘要:
A method and apparatus for operating geography-altering machinery such as a track-type tractor, road grader, paver or the like relative to a work site to alter the geography of the site toward a desired condition. A first digital three-dimensional model of the desired site geography, and a second digital three-dimensional model of the actual site geography are stored in a digital data storage facility. The machine is equipped with a position receiver to determine in three-dimensional space the location of the machine relative to the site. A dynamic database receives the machine position information, determines the difference between the first and second site models and generates representational signals of that difference for directing the operation of the machine to bring the actual site geography into conformity with the desired site geography. In one embodiment, the signals representing the machine position and the difference between the first and second site models used to generate an operator display which is updated in real time. Alternately, the signals representing the difference between the first and second site models can be supplied to automatic machine controls for autonomous or semi-autonomous operation of the machine.
摘要:
A self-calibrating Global Positioning System (GPS) reference station and method for operating the reference station. The reference station includes a station frame, a GPS receiver and a controller mounted on the station frame. The controller upon power up, determines if the reference station has been moved and determines a new reference position of the reference station if the reference station has been moved. The GPS receiver is then placed into a reference station mode.
摘要:
A method for calculating a volume between previous and current site surfaces is provided. The site surfaces are represented by a series of surface elevations. The method includes the steps of determining previous surface elevations; traversing the site with a work machine and determining current surface elevations; and calculating a volume difference between the current surface and the previous surface as a function of the previous surface elevations and the current surface elevations.
摘要:
A method for determining the heading of a machine with respect to the course of the machine is provided. The method includes the steps of determining an initial course of the earthmoving; determining an initial heading of the machine and responsively setting a direction status; and determining the current course of the earthmoving machine. The method further includes the steps of comparing the initial and current courses and responsively updating the direction status.
摘要:
The present invention provides a site database structure for storing data for access by an application program being executed on a control system on a work machine. The work machine operates at a work site. The data representing a parameter of the work site. A data structure is stored in the memory. The data structure includes information resident in a database used by the application program. A plurality of data objects are associated with the data structure. Each data object represents a defined section of the work site and is represented by a set of predefined coordinates. At least one layer object is associated with each data object. Each layer object has a predefined number of cell objects. Each cell object has an associated value of the parameter.
摘要:
The invention is a method for monitoring a work cycle of a earth moving machine on a land site. The method includes the steps of determining a direction of motion of the earth moving machine as being either a forward or a reverse direction of motion, determining a change in the direction of motion to an opposite direction of motion, determining a location of the earth moving machine on the land site where the change in direction of motion occurs, determining a condition of the land site at the location, and determining a work cycle of the earth moving machine in response to the condition.
摘要:
An apparatus for determining the location of a work implement at a work site is provided. The apparatus includes an undercarriage, a car body rotatably connected to the undercarriage, a boom connected to the car body, a stick connected to the boom, a work implement connected to the stick, and a positioning system including a receiver connected to the stick and a processor for determining the location of the receiver in three dimensional space at a plurality of points as the car body is rotated and for determining the location and orientation of the work implement.
摘要:
An apparatus and method for directing the operations of multiple geography-altering machines on a common work site relative to one another. Position information from several machines is shared to generate a common, dynamically-updated site database showing the machines' relative positions and site progress in real time. The common site database is used to direct the operation of one machine with respect to another machine or machines, for example by generating an operator display of the site showing relative machine position and total machine work on the site. The operator can accordingly adjust the machine's operation to avoid interference with other machines or unnecessary overlap of work on the site. The information can also be used to coordinate the operations of several machines in complementary fashion. Machine position information can be broadcast from the machines to the site database to create a common, dynamically-updated database which is then shared with one or more of the machines. In a particular embodiment each machine is provided with its own dynamically-updated database and operator display, and machine position information is shared on a continuous, real-time basis between the machines so that they effectively share a common site database.