System and method for land-leveling
First Claim
1. A system for providing a flat grade to guide alteration of land, the system comprising:
- a first antenna operable on an earth moving machine, the first antenna operable to receive signals from a satellite navigation system; and
a computer responsive to the signals received by the first antenna, the computer operable to determine a position of the first antenna relative to a planar surface tangent to the Earth as a function of the signals from the satellite navigation system;
wherein the computer is operable in first and second modes of operation, the first mode of operation corresponding to calculating an elevation of a work implement to correspond to the flat grade relative to the planar surface tangent to the Earth, and the second mode of operation corresponding to calculating the elevation of the work implement to correspond to a curved surface approximating a surface of the Earth, the first mode of operation different than the second mode of operation.
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Accused Products
Abstract
A land-leveling system that uses the Global Positioning System is provided. The system provides for an earth-moving machine mounted with an antenna that receives GPS signals from the satellites of the Global Positioning System. The earth-moving machine comprises a vehicle attached to a work implement, which is also connected to an actuator. A decision unit mounted on the vehicle sends control signals to the actuator, which controls the elevation of the work implement. These control signals are generated using the signals received from the antenna and the desired grade map. This system has an increased coverage area, more accuracy and round-the-clock operability. The system could be used to carry out all the land-leveling operations viz. surveying, leveling and verifying.
42 Citations
27 Claims
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1. A system for providing a flat grade to guide alteration of land, the system comprising:
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a first antenna operable on an earth moving machine, the first antenna operable to receive signals from a satellite navigation system; and
a computer responsive to the signals received by the first antenna, the computer operable to determine a position of the first antenna relative to a planar surface tangent to the Earth as a function of the signals from the satellite navigation system;
wherein the computer is operable in first and second modes of operation, the first mode of operation corresponding to calculating an elevation of a work implement to correspond to the flat grade relative to the planar surface tangent to the Earth, and the second mode of operation corresponding to calculating the elevation of the work implement to correspond to a curved surface approximating a surface of the Earth, the first mode of operation different than the second mode of operation. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A system for providing a flat grade to guide alteration of land, the system comprising:
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a first antenna operable on an earth moving machine, the first antenna operable to receive signals from a satellite navigation system; and
a computer responsive to the signals received by the first antenna, the computer operable to determine a position of the first antenna in a coordinate frame of reference relative to a curved surface approximating a surface of the Earth as a function of the signals from the satellite navigation system. - View Dependent Claims (8, 9, 10, 11)
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12. A method for providing a flat grade to guide alteration of land, the method comprising:
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(a) receiving satellite navigation signals;
(b) determining a flat grade;
(c) leveling a field along the flat grade as a function of the satellite navigation signals; and
(d) providing a user with first and second leveling options, the first leveling option being leveling the field relative to a curved surface approximating a surface of the Earth, and the second leveling option being leveling the field relative to a planar surface tangent to the Earth, the first leveling option being a different mode of operation than for the second leveling option. - View Dependent Claims (13, 14, 15, 16)
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17. A system for providing a grade map to guide alteration of land, the system comprising:
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a base station;
a first antenna operable on an earth moving machine, the first antenna operable to receive signals from a satellite navigation system; and
a computer responsive to the signals received by the first antenna, the computer operable to determine an offset height of the first antenna relative to the base station in response to the first antenna being at an on-grade location. - View Dependent Claims (18, 19)
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20. A method for providing a grade map to guide alteration of land, the method comprising:
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(a) receiving satellite navigation signals;
(b) determining a position on a grade map as a function of the satellite navigation signals;
(c) positioning an earth-moving machine at an on-grade location; and
(d) determining an offset height of an antenna relative to a base station as a function of the satellite navigation signals received during (c). - View Dependent Claims (21)
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22. A system for providing a flat grade to guide alteration of land, the system comprising:
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a first antenna operable on an earth moving machine, the first antenna operable to receive signals from a satellite navigation system; and
a computer responsive to the signals received by the first antenna, the computer operable to determine a position of the first antenna relative to the flat map as a function of the signals from the satellite navigation system;
wherein the flat grade is determined as a function of at least one input slope. - View Dependent Claims (23, 24)
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25. A method for providing a flat grade to guide alteration of land, the method comprising:
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(a) receiving satellite navigation signals;
(b) inputting a slope of the flat grade; and
(c) determining a position on the flat grade as a function of the satellite navigation signals and the input slope. - View Dependent Claims (26, 27)
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Specification