公开(公告)号：US20160176114A1

公开(公告)日：2016-06-23

申请号：US14803679

申请日：2015-07-20

Applicant: NATIONAL APPLIED RESEARCH LABORATORIES

Inventor： Hsin-Yi TSAI ,  Min-Wei HUNG ,  Kuo-Cheng HUANG ,  Keng-Liang OU ,  Ching-Ching YANG

IPC: B29C67/00 ,  G05B19/4099

CPC classification number: B29C64/386 ,  B33Y50/02

Abstract: A system for online monitoring powder-based 3D printing processes and method thereof are disclosed. A uniform light source having a single wavelength provided by the system is irradiated onto the powder layer before and after applied with glue. Intensities of such reflected images are obtained and subtracted from each other in an image process procedure. A difference obtained through the subtraction is compared with an original 3D model in a computer. If any defect is found such as being larger than a threshold value, the powder-based 3D printing processes will be terminated. Therefore, the technical effects of online printing processes monitoring, time saving and printing resources saving will be achieved.

Abstract translation: 公开了一种用于在线监测基于粉末的3D印刷工艺及其方法的系统。 具有由系统提供的单一波长的均匀光源在施加胶之前和之后被照射到粉末层上。 在图像处理过程中获得并减去这些反射图像的强度。 通过减法获得的差异与计算机中的原始3D模型进行比较。 如果发现任何缺陷，例如大于阈值，则基于粉末的3D打印处理将被终止。 因此，将实现在线打印过程监控，节省时间和打印资源节约的技术效果。

公开(公告)号：US20130262006A1

公开(公告)日：2013-10-03

申请号：US13749664

申请日：2013-01-24

Applicant: NATIONAL APPLIED RESEARCH LABORATORIES

Inventor： Chun-Li CHANG ,  Kuo-Cheng HUANG ,  Ching-Ching YANG ,  Wen-Hong WU ,  Han-Chao CHANG

IPC: G01J3/50 ,  G06F17/00

CPC classification number: G01J3/505 ,  G01J1/0418 ,  G01J1/0488 ,  G01J1/26 ,  G01J1/4228 ,  G01J2001/4252 ,  G06F17/00

Abstract: A white LED quality inspection method includes steps as follows. A steady current is supplied to a LED by a rated voltage supply unit for generation of a stable light spot from the LED; a stable light spot is received by a photosensor of a luminous intensity sensing unit and transformed to digital information; the digital information is received by a preprocessing unit and transformed to pixel information; the pixel information is received by a calculation unit to calculate a Yellow Ring Index of each pixel in the pixel information.

Abstract translation: 白色LED质量检验方法包括以下步骤。 通过额定电压供应单元向LED提供稳定的电流，用于从LED产生稳定的光点; 稳定的光点由发光强度感测单元的光电传感器接收并转换为数字信息; 数字信息由预处理单元接收并转换为像素信息; 像素信息由计算单元接收，以计算像素信息中每个像素的黄色环形索引。