System for heating a paving screed
First Claim
1. A system for controlling heating of a screed plate, comprising:
- a paving material delivery path;
a screed plate operably mounted on a mobile machine and disposed along the paving material delivery path;
a first temperature sensor associated with the screed plate, the first temperature sensor being configured to generate first temperature signals indicative of a screed plate temperature;
a second temperature sensor disposed within a hopper of the mobile machine, the second temperature sensor being configured to generate second temperature signals indicative of an actual paving material temperature of a paving material in the hopper;
a heater operatively associated with the screed plate and configured to heat the screed plate; and
a controller configured to;
access a temperature variation range;
receive the first temperature signals;
determine the screed plate temperature based upon the first temperature signals;
receive the second temperature signals;
determine the actual paving material temperature based upon the second temperature signals;
determine an estimated paving material temperature adjacent the screed plate based upon the actual paving material temperature, at least one temperature adjustment characteristic associated with a location of the second temperature sensor, and a feed rate of the paving material; and
generate command signals to operate the heater to maintain the screed plate temperature within the temperature variation range relative to the estimated paving material temperature.
1 Assignment
0 Petitions
Accused Products
Abstract
A system for controlling heating of a screed plate includes screed plate disposed along the paving material delivery path. A first temperature sensor is operative to monitor a screed plate temperature and a second temperature sensor along the paving material delivery path is operative to monitor an actual paving material temperature of a paving material being applied to a work surface. A controller is configured to determine an estimated paving material temperature adjacent the screed plate based upon the actual paving material temperature and operate a heater to maintain the screed plate temperature within a temperature variation range relative to the estimated paving material temperature.
60 Citations
20 Claims
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1. A system for controlling heating of a screed plate, comprising:
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a paving material delivery path; a screed plate operably mounted on a mobile machine and disposed along the paving material delivery path; a first temperature sensor associated with the screed plate, the first temperature sensor being configured to generate first temperature signals indicative of a screed plate temperature; a second temperature sensor disposed within a hopper of the mobile machine, the second temperature sensor being configured to generate second temperature signals indicative of an actual paving material temperature of a paving material in the hopper; a heater operatively associated with the screed plate and configured to heat the screed plate; and a controller configured to; access a temperature variation range; receive the first temperature signals; determine the screed plate temperature based upon the first temperature signals; receive the second temperature signals; determine the actual paving material temperature based upon the second temperature signals; determine an estimated paving material temperature adjacent the screed plate based upon the actual paving material temperature, at least one temperature adjustment characteristic associated with a location of the second temperature sensor, and a feed rate of the paving material; and generate command signals to operate the heater to maintain the screed plate temperature within the temperature variation range relative to the estimated paving material temperature. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of controlling heating of a screed plate, comprising:
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providing a screed plate operably mounted on a mobile machine and disposed along a material delivery path; receiving first temperature signals from a first temperature sensor associated with the screed plate, the first temperature signals being indicative of a screed plate temperature; determining the screed plate temperature based upon the first temperature signals; receiving second temperature signals from a second temperature sensor disposed within a hopper of the mobile machine, the second temperature signals being indicative of an actual paving material temperature of a paving material in the hopper; determining the actual paving material temperature based upon the second temperature signals; determining an estimated paving material temperature adjacent the screed plate based upon the actual paving material temperature; setting a temperature variation range based on the estimated paving material temperature; and generating command signals to operate a heater associated with the screed plate and configured to heat the screed plate to maintain the screed plate temperature within the temperature variation range. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A paving machine comprising:
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a ground engaging drive mechanism to propel the paving machine; a paving material delivery path; a screed assembly disposed along the paving material delivery path and configured for applying paving material to a work surface, the screed assembly including a screed plate; a first temperature sensor associated with the screed plate, the first temperature sensor being configured to generate first temperature signals indicative of a screed plate temperature; a second temperature sensor disposed within a hopper of the paving machine, the second temperature sensor being configured to generate second temperature signals indicative of an actual paving material temperature of a paving material in the hopper; a heater operatively associated with the screed plate and configured to heat the screed plate; and a controller configured to; access a temperature variation range; receive the first temperature signals; determine the screed plate temperature based upon the first temperature signals; receive the second temperature signals; determine the actual paving material temperature based upon the second temperature signals; determine an estimated paving material temperature adjacent the screed plate based upon the actual paving material temperature, at least one temperature adjustment characteristic associated with a location of the second temperature sensor, a feed rate of the paving material, and weather conditions at the paving machine; and generate command signals to operate the heater to maintain the screed plate temperature within the temperature variation range relative to the estimated paving material temperature. - View Dependent Claims (19, 20)
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Specification