Machine alert when stopping on hot asphalt
First Claim
Patent Images
1. An alert system for use in a compactor for an asphalt paving operation comprising:
- a speed sensor;
a pavement temperature sensor;
an operator alert device configured to activate an alert to an operator when a command is received; and
a controller that;
determines, via the speed sensor, that the compactor is stopped;
determines, via the pavement temperature sensor, that a pavement temperature proximate the compactor is above a threshold temperature; and
issues the command that activates the operator alert device.
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Accused Products
Abstract
An alert system in equipment used in an asphalt paving environment, such as a compactor, signals an operator when the equipment is stopped on hot asphalt, potentially over-compacting the area where the equipment is located. The alert system includes a surface temperature sensor so that the alert is only activated when there is a risk of over-compaction because the asphalt is still above a threshold temperature. The alert system may also include a timer so that the operator is not signaled during routine stopping associated with changing direction during compacting operations.
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Citations
20 Claims
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1. An alert system for use in a compactor for an asphalt paving operation comprising:
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a speed sensor; a pavement temperature sensor; an operator alert device configured to activate an alert to an operator when a command is received; and a controller that; determines, via the speed sensor, that the compactor is stopped; determines, via the pavement temperature sensor, that a pavement temperature proximate the compactor is above a threshold temperature; and issues the command that activates the operator alert device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of setting an alert device in equipment used in a paving application comprising:
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determining that the equipment has come to a full stop; determining that a surface proximate to the equipment is above a threshold temperature; starting a timer; and when the timer reaches a preset time and the equipment has remained at the full stop for the entire preset time, activating the alert device notifying an operator that the equipment should be moved. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A system for activating an alarm in paving equipment comprising:
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a timer; a temperature sensor that conveys a temperature of a surface of a mat of paving material proximate to the paving equipment; the alarm configured to alert an operator of the paving equipment of a condition; and a controller coupled to the timer, the temperature sensor, and the alarm, the controller configured to; receive a signal indicating the paving equipment is stopped; start the timer when both the paving equipment is stopped and the temperature of the surface proximate to the paving equipment is above a threshold temperature; and when the timer reaches a preset time, activate the alarm. - View Dependent Claims (19, 20)
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Specification