Presentation on theme: "Virtual Environments for Manufacturing And Training (VEMAT)"— Presentation transcript:
1 Virtual Environments for Manufacturing And Training (VEMAT) ByTan Hock SoonOn Behalf ofShen Shuang YangMr Zhou HongTan Kim Cheng
2 AcknowledgementAPEC TEL for funding this research under the project title VEMAT (05/2001).
3 Outline Introduction Literature Review Conceptual Framework Tests Shortage of manpower, facilitiesConcept of sharingLiterature ReviewIncreasing trend of collaboration in manufacturingIncreasing trend of virtual technologies in educationFindingsConceptual FrameworkPrototype SelectionClusteringSoftwareApplication Framework (Video)TestsConcluding DiscussionQ & A
4 1. IntroductionIn education, we recognized that there is often a shortage of:Experienced/qualified teachersEquipment, especially specialized laboratory equipmentWe can try to alleviate the problem of shortage of teachers by sharing them (or their knowledge) in different ways:Digitize their knowledge (in courseware, video, etc.)Allow synchronous lessons to be conducted using video conferencingWhat aboutexpensive equipment?
5 1. Introduction Contemplate the networked laser printer By sharing it, its effectiveness has increased, more users benefit from the connection
6 1. IntroductionCould the same approach be taken for even more expensive equipment?Could the idea of “sharing” be taken further?What would be the likely mechanism?How does this help education?
7 2. Literature ReviewIncreasing trend of collaboration in manufacturingInternet-enabled distributed systems (Bailey 1995, Tay et. al. 2001)Portals for virtual manufacturing (Equipment and machines gravitating towards Internet integrated technology, modular and commercially available parts (Tan & Chu 2000, Tan & Lee 1999)
8 2. Literature ReviewIncreasing trend of virtual technologies in educationEmpirical data on transfer of skills from virtual environments to real world in terms of instructional effectiveness (Moshell et. al. 1993, Tan & Ward 1998)Potential of VEs in education & training (Youngblut 1997, Francis & Tan 1999)Simulators & on-line laboratories (Tan 2000, Tan & Chu 2000)
9 2. Literature Review Findings Very possible that certain categories of equipment/machines could be sharedSome equipment already have built-in capabilities for connection to a networkVery possible to retrofit equipment at low cost using standard componentsResource-sharing concept is feasiblePossible to create simulations for on-line training
10 3. Conceptual Framework Equipment Selection Fused Deposition Modelling (FDM) Machine, a type of Rapid Prototyping (RP) MachineSet-up involved relatively few steps that can be easily controlled remotelyOperation time was long, ranging from a few hours to daysMachine and Process is expensiveMachine is controlled by a microprocessor that had easy means of communicating with external world through ACL (Automove Control Language)
14 Application Framework – Application in Biomedical Engineering 3. Conceptual FrameworkApplication Framework – Application in Biomedical EngineeringThis software is used to process CT/MRI scans to 3D Models and finally to STL filesManufacturing processRAW FILESSTL FILESML FILECT/MRISCAN FILESVELOCITY2 PROINSIGHTFDM 3000MODELCLIENTThis software is used to process STL 3D model for manufacturing purpose, which includes slicing, support building and tool-path computation. The output file is in SML format – ACL codes read by FDM 3000 RP machineDesired part
15 3. Conceptual Framework Web Portal Scheduler Live Webcam Training Remote AccessWeb PortalSchedulerLive WebcamTraining
17 Tests Conducted Aug 2002 Beijing Aug 2002 Shanghai Trial with CERNETAug 2002 ShanghaiA live demonstration was performed, which tested the stability and efficiency of the VEMAT system. The bandwidth of the remote user is 2Mbps, which is sufficient for both remote access and high-quality live video stream transmission. Up to this point, the first phase of VEMAT is closed with satisfactory results.Oct 2002 Internal Tests for Phase 2Use of new methodology.Nov 2002 Final TestsDuring this period, VEMAT was tested from various remote IP addresses all over the world. This was achieved by using public SOCKS5 proxies and SocksCAP from Networking Systems Laboratory, NEC USA, Inc. VEMAT was tested fully functional up to this point of time. Some minor changes to the user interface were made to make the system more user-friendly.Dec 2002 Evaluation by APEC TEL and IDADec 2002 User Tests from BIOMAT LabMar 2002 Acceptance by APEC TEL and IDA
18 4. Discussion and Conclusion Sharing of resources between institutions allow costs to be minimized; equipment to be fully utilizedProvide service to educational and research community - reducing the development cost and timeCollaboration allows learners to gain international perspectives by working with people from other countryCourseware allows users to practise; be familiar with the systemConvert CT/MRI images and fabricate models for biomedical and tissue engineering applications