NESL Technical Report #: 2010-10-2
Computer Aided Design (CAD) tools have all but eliminated manual drafting and for good reason. CAD offers more accurate drawing tools, grey coding of drafting symbols, rapid duplication of finished designs, easier integration with manufacturing partners, and automated design rule verification. For the purposes of this work we focus on electronics design. CAD tools in this space manage part data in a logical schematic view (a part symbol) and a physical PCB view (a part footprint). Yet, a part has a third view, which CAD tools ignore – it’s supply data (Manufacturer part number, variant, distributor, etc).
To manage this manufacturing view a broad class of tools known as Product Lifecycle Management (PLM) have evolved to include most of the functions previously classified as Engineering Resource Planning (ERP). AMR Research analyst Michael Burkett describes it this way, "PLM is [no longer] a single application but a process that crosses multiple business processes and technologies, i.e. marketing and supply chain.”
Despite these advances, a substantial chiasm still exists between the manufacturing and engineering views. More specifically, part data known to the supply chain (managed through PLM tools) and performance and specification data known to the engineering world (managed through CAD tools) must be manually integrated and managed by the design team.
This leads to a substantial amount of redundant data entry into both tool chains with any error resulting in an inconsistency between design intent and fabrication. In the case of electronic small parts, this can result in subtle (even unnoticeable) part substitutions which may yield dramatic product performance alterations.
In this work we introduce an entirely new approach to bridging the tool-chain divide – a web-based architecture we call FriedParts. FriedParts exploits the recently available database-driven parametric part interfaces of CAD tools (like Cadence’s Component Information System or Altium’s Database Library Components) and web 2.0 automation to crawl data information providers like Octopart, Inc. and Digikey, Inc. and tie this information directly into the CAD tool at design time. It uses heuristics to suggest CAD symbols and footprints. Part search is handled from the website where cloud computing accelerates the search performance. The materials bill output from the CAD tool is then fed back into FriedParts which can automatically find second-source distribution, find alternate manufacturers, optimize purchasing, and perform other PLM functions. The amount of data entry by the designer is brought to almost zero. FriedParts stores the actual CAD data (part libraries) fostering verification and collaboration. FriedParts is open-source and will be made available as a free service.
Publication Forum: Association Connecting Electronics Industries (IPC) APEX Conference Proceedings
Page (Count): 9
Place: Las Vegas, NV USA
Public Document?: Yes
NESL Document?: Yes
Document category: Conference Paper