Device and method for determining cleanliness of a rotating drum of a fresh concrete mixer truck
AssigneeCommand Alkon Incorporated
InventorsDenis Beaupre, Jerome Chapdelaine
Life of this patent
Estimating the term…
Abstract
A method for determining cleanliness of a drum of a fresh concrete mixer truck. The method generally has: rotating the drum about the rotation axis with a constant torque; using a rotational speed sensor, measuring a plurality of speed values corresponding to speeds at which the drum rotates at different moments in time during said rotating; and using a controller, receiving the plurality of speed values; accessing calibration data having different reference speed values-related data associated to corresponding reference degrees of cleanliness of the drum; comparing at least some of the speed values to the calibration data; and determining a degree of cleanliness of the drum based on said comparison.
Claims20
A method for determining cleanliness of a drum of a fresh concrete mixer truck, the drum having a rotation axis, the method comprising:
- rotating the drum about the rotation axis with a constant torque;
- using a rotational speed sensor, measuring a plurality of speed values corresponding to speeds at which the drum rotates at different moments in time during said rotating;
- and
- using a controller,
- receiving the plurality of speed values;
- accessing calibration data having different reference speed values-related data associated to corresponding reference degrees of cleanliness of the drum;
- comparing at least some of the speed values to the calibration data;
- and
- determining a degree of cleanliness of the drum based on said comparison.
A device for determining cleanliness of a drum of a fresh concrete mixer truck, the fresh concrete mixer truck having a frame, a drum rotatably mounted to the frame for rotation about a rotation axis, and a driving device mounted to the frame driving rotation of the drum about the rotation axis, the device comprising:
- a rotational speed sensor measuring a plurality of speed values corresponding to speeds at which the drum rotates at different moments in time during a period of time within which the driving device drives rotation of the drum with a constant torque;
- and
- a controller communicatively coupled with the rotational speed sensor, the controller having a processor and a non-transitory memory having stored thereon instructions which when executed by the processor perform the steps of:
- receiving the plurality of speed values;
- accessing calibration data having different reference speed values-related data associated to corresponding reference degrees of cleanliness of the drum;
- comparing at least some of the speed values to the calibration data;
- and
- determining a degree of cleanliness of the drum based on said comparison.
A method for determining cleanliness of a drum of a fresh concrete mixer truck, the drum having a rotation axis, the method comprising:
- rotating the drum about the rotation axis with a constant torque;
- using an accelerometer, measuring a plurality of acceleration values corresponding to accelerations at which the fresh concrete mixer truck rocks in a lateral orientation perpendicular to said rotation axis and to a gravitational axis at different moments in time during said rotating;
- and
- using a controller,
- receiving the plurality of acceleration values;
- accessing calibration data having different reference acceleration values-related data associated to corresponding reference degrees of cleanliness of the drum;
- comparing at least some of the acceleration values to the calibration data;
- and
- determining a degree of cleanliness of the drum based on said comparison.
Dependencies are inferred from the claim text.