Method and apparatus for estimating height of 3d printing object formed during 3d printing process, and 3d printing system having the same
AssigneeKorea Advanced Institute of Science and Technology
InventorsHoon SOHN, Ikgeun JEON
Life of this patent
Estimating the term…
Abstract
A method and apparatus for estimating a height of a 3D printing object formed during a 3D printing process are disclosed. The method includes extracting one or more temperature-related data of the 3D printing object formed during the 3D printing process, building an artificial neural network model for estimating the height of the 3D printing object by using the extracted temperature-related data; and estimating the height of the 3D printing object by inputting a newly measured thermal image and the one or more temperature-related data values into the artificial neural network model. The height of the 3D printing object can be measured in real time.
Claims17
A method of estimating a height of a 3D printing object formed during a 3D printing process, comprising:
- extracting one or more temperature-related data of the 3D printing object formed during the 3D printing process;
- building an artificial neural network model for estimating the height of the 3D printing object by using the extracted temperature-related data;
- and
- estimating the height of the 3D printing object by inputting a newly measured thermal image and the one or more temperature-related data into the artificial neural network model,
- wherein the one or more temperature-related data includes a surface temperature phase and a temperature amplitude change of the 3D printing object.
An apparatus for estimating a height of a 3D printing object formed during a 3D printing process, comprising:
- a thermal imaging camera configured to measure a temperature of the 3D printing object formed during the 3D printing process;
- and
- a calculation unit configured to estimate the height of the 3D printing object from the temperature of the 3D printing object unit measured by the thermal imaging camera,
- wherein the calculation unit includes functions of:
- extracting one or more temperature-related data of the 3D printing object formed during the 3D printing process;
- building an artificial neural network model for estimating the height of the 3D printing object by using the extracted temperature-related data;
- and estimating the height of the 3D printing object by inputting a newly measured thermal image and the one or more temperature-related data values into the artificial neural network model, and
- wherein the one or more temperature-related data includes a surface temperature phase and a temperature amplitude change of the 3D printing object.
A system for 3D printing process, comprising:
- a laser source configured to form a molten pool on a 3D printing object by irradiating a laser beam to melt a base material supplied to the 3D printing object;
- a base material supply source configured to supply the base material to the 3D printing object;
- a thermal imaging camera configured to measure a temperature of the 3D printing object by imaging the 3D printing object formed during the 3D printing process;
- and
- a calculation unit configured to estimate the height of the 3D printing object from the temperature of the 3D printing object unit measured by the thermal imaging camera,
- wherein the calculation unit includes functions of:
- extracting one or more temperature-related data of the 3D printing object formed during the 3D printing process;
- building an artificial neural network model for estimating the height of the 3D printing object by using the extracted temperature-related data;
- and estimating the height of the 3D printing object by inputting a newly measured thermal image and the one or more temperature-related data values into the artificial neural network model, and
- wherein the one or more temperature-related data includes a surface temperature phase and a temperature amplitude change of the 3D printing object.
Dependencies are inferred from the claim text.