3D scanner made in Vietnam

National key laboratory of digital control and system engineering (DCSELAB) Ho Chi Minh City University of Technology has successfully manufactured 3D scanner with very low price compared to imported products but has More outstanding features.

Not only in the field of cinema, 3D technology increasingly shows superior features in areas such as medicine, archeology, product processing . 3D scanners help people a lot in the creation of a complete mold of a product used for research, survey, inspection, manufacturing .

100% localization

Talking about the idea of ​​manufacturing 3D scanners, engineer Phan Huynh Lam, chairman of the project, said: ' In the world, 3D scanner systems are very popular, the application of scanner systems help boost production, save costs and increase productivity, but the price is very high. From these thoughts, we have built a 3D scanner model to scan test samples, build reverse prototypes to apply in integration at sample inspection lines, in shaping and creating applications. form. Currently, scanner and software devices are mainly foreign, so we need to deploy to master the technology, reducing costs. It can be said that 3D scanner products of DCSELAB are the first successful localization 3D scanner of Vietnam.

The product includes hardware with a translucent shaft and a spindle to cut objects into thin layers when scanning images. On the translation axis, there is a camera and a straight-line laser so that when the laser is beamed into the object, it creates lines and the camera is responsible for seeing those cuts. The processing system is controlled by a combination of applications such as translational motion control software and rotation motion, software for reading data from cameras and position sensor signals to output 2D cutting layers and of objects, software to pair 2D layers and display into 3D, software capable of exporting into PLY and STL files for specialized mechanical machines .

Engineer Phan Huynh Lam next to 3D scanner - (Photo: Ngoc Khanh)

The 3D scanner uses the principle of photographing objects with sliced ​​slices by lasers and connecting these slices together with software. To do this, the translation system will move the steps evenly and small enough to completely sweep the laser surface. The turntable system rotates the object to coordinate with the translational axis system to scan the rest of the object. The software on the computer will transmit the control signal to the motor drive controller circuit to scan the surface, and the software will smooth and process the signal transfer from the camera to the 3D space signal.

'The 3D scanner product of DCSELAB is 100% localized, able to self-assemble multiple assemblies instead of users having to manipulate transplantation like another machine (eg Konica machine), with high resolution' - Assoc. Prof. Dr. Nguyen Thanh Nam, Director of DCSELAB, shared.

Many advantages, cheap prices

According to the engineers of DCSELAB, when applied in practice, 3D scanners will make the reverse engineering process in mechanical industry simpler. From there, it is easy to redesign the mold of the detail, rebuild the 3D model to put it into machining and help check whether the product made is in accordance with the design requirements. In archeology, 3D scanners help to accurately reproduce objects without contact.

'The advantage of 3D scanners is that it is capable of one-time scanning with high accuracy that imported products cannot. It has a combination of rotating and translational axis, which automatically scans objects without the need for users to pair. The machine can be scanned in a closed room, thus ensuring the accuracy, while the scan time of completing a low sample, only 15-20 minutes' - engineer Phan Huynh Lam shared about the advantages of 3D scanner compared to other machines. Foreign scanning available in the market.

3D scanner products have been studied by the authors since the end of 2012 with a total cost of nearly VND 200 million. If importing such a machine from abroad, the budget can be up to 1-1.5 billion VND. With complete mastery of technology and successful localization of products, the price of 3D made in Vietnam scanner products of DCSELAB is only 1/2 - 1/3 of the price of imported products with equivalent features. In addition, product maintenance has many advantages compared to imported equipment.

Currently, the demand for localization of imported products is increasing, reflected in the increasing number of orders for studying localization of imported products at DCSELAB. Successful research on 3D scanners is a testament to the fact that Vietnam is fully capable of researching and producing high quality products, meeting both domestic and international market demands.

Associate Prof. Dr. Nguyen Thanh Nam said: 'We are actively improving our products, as well as improving the handheld scanning products more compact, more reasonable resolution to compete with imported products. .

Implement practical applications

In the coming time, DCSELAB will put 3D scanners into plastic factories, mechanical factories to check processed products, reverse design products. The group is working with companies to implement product applications in practice. 3D scanners are also being suggested by two research groups in Taiwan and South Korea to collaborate to develop and deliver this product.