MEDUSA
Encyclopedia
MEDUSA, is a CAD
Computer-aided design
Computer-aided design , also known as computer-aided design and drafting , is the use of computer technology for the process of design and design-documentation. Computer Aided Drafting describes the process of drafting with a computer...

 program used in the areas of mechanical and plant engineering by manufacturers and Engineering, Procurement and Construction (EPC) companies. The system's history is closely tied to the very beginnings of mainstream CAD and the research culture fostered by Cambridge University and the UK government as well as the resulting "Cambridge Phenomenon"

Technical Summary

MEDUSA is based on a platform-independent kernel which, combined with a platform-independent user interface based on the Qt (framework) (with XML
XML
Extensible Markup Language is a set of rules for encoding documents in machine-readable form. It is defined in the XML 1.0 Specification produced by the W3C, and several other related specifications, all gratis open standards....

 for Administration and Web-based client-server communication for data management) allows for a high degree of systems and platform flexibility. The software is available on Microsoft Windows
Microsoft Windows
Microsoft Windows is a series of operating systems produced by Microsoft.Microsoft introduced an operating environment named Windows on November 20, 1985 as an add-on to MS-DOS in response to the growing interest in graphical user interfaces . Microsoft Windows came to dominate the world's personal...

, Sun Solaris and Linux
Linux
Linux is a Unix-like computer operating system assembled under the model of free and open source software development and distribution. The defining component of any Linux system is the Linux kernel, an operating system kernel first released October 5, 1991 by Linus Torvalds...

.

The 4th Generation of the MEDUSA 2D and 3D CAD product family was released by the company CAD Schroer in the summer of 2004. Various software modules and packages have been developed, with MEDUSA4 DRAFTING PLUS, a 2D CAD program with all the standard 2D design functionality and baCIS1 and baCIS2 customisation tools as the base product.

History

MEDUSA has had a checkered history in the CAD world, which began in Cambridge
Cambridge
The city of Cambridge is a university town and the administrative centre of the county of Cambridgeshire, England. It lies in East Anglia about north of London. Cambridge is at the heart of the high-technology centre known as Silicon Fen – a play on Silicon Valley and the fens surrounding the...

, UK in the 1970s. MEDUSA’s history is tied in with the Computer-Aided Design Centre (or CADCentre
CADCentre
AVEVA Group plc is a British multinational company headquartered in Cambridge, United Kingdom. It provides engineering design, information management solutions, and CAD/CAM software along with technology consulting services for the Plant , Power and Marine industries.It is listed on the...

) which was created in Cambridge in 1967 by the UK Government to carry out CAD research.

British computer scientist Dr. Dick Newell
Dick Newell
Dr. Richard G. Newell has spent over 30 years in the software industry in Computer aided design and Geographic Information Systems .Dick holds degrees in Civil Engineering and Numerical Analysis and a PhD in Chemical Engineering....

 worked there on a file-based macro language driven 3D plant design system called PDMS (Plant Design Management System
Plant Design Management System
PDMS as it is known in the 3D CAD industry, is a customizable, multi-user and multi-discipline, engineer controlled design software package for engineering, design and construction projects in, but not limited to, offshore and onshore oil & gas industry, chemical & process plants, mining,...

). Together with colleague Tom Sancha he left the CADCentre in 1977 to form a company called Cambridge Interactive Systems or CIS and primarily concentrated on 2D CAD. CIS had developed an electrical cabling solution initially called CABLOS, which was first purchased by Dowty Engineering in about 1979. Another early adopter was BMW, which used the system for car wiring diagrams. CABLOS soon became known and sold as the MEDUSA drafting system under CIS. The proprietary programming language with which MEDUSA version 1 was developed was known as LCIS. Around this time, the company also began developing its own 3D modelling kernel for MEDUSA.

Around 1980, CIS partnered with Prime Computer
Prime Computer
Prime Computer, Inc. was a Natick, Massachusetts-based producer of minicomputers from 1972 until 1992. The alternative spellings "PR1ME" and "PR1ME Computer" were used as brand names or logos by the company.-Founders:...

 (also known as PR1ME and PRUNE), a U.S.-based computer hardware provider. Prime had an option on the MEDUSA source code should CIS ever fail. In 1983 the U.S. CAD company Computervision
Computervision
Computervision, Inc. was an early pioneer in turnkey Computer Aided Design and Manufacturing . Computervision was founded in 1969 by Marty Allen and Philippe Villers, and headquartered in Bedford, Massachusetts, USA. Its early products were built on a Data General Nova platform...

 (CV) purchased CIS. Computervision already had a legacy CAD product called CADDS4, but was interested in obtaining some of the state-of-the-art MEDUSA technology.

At the time, MEDUSA was available on the then newly released 32bit so-called super mini computers, whose most prominent distributors were DEC (VAX) and Prime Computer.

In 1984 there was a fork in MEDUSA: Prime took its option to keep developing MEDUSA. This in effect created two different versions of MEDUSA: CIS MEDUSA (owned by Computervision, which ran on Prime and VAX minicomputers and on Sun workstations) and Prime MEDUSA (given away for free with the purchase of Prime computers, and which only ran on Prime computers). The two versions had a slightly different file format and the LCIS development language was developed in slightly different directions.

In Germany in the mid 1980s one MEDUSA workplace with a CV colour graphics terminal and a 19 inch colour screen including the software license cost around 145,000 German Marks (DM). The central computer would cost as much again. Because of the high costs involved, many companies deploying CAD systems reverted to shift work for design staff in order to make best use of the systems. The first shift might run from six in the morning until two in the afternoon; the second from two until ten o’clock in the evening.

The split in MEDUSA development was merged when Prime Computers bought Computervision, with the promise to CV customers that VAX users would not be forced to switch to Prime workstations. Many users, however, did not trust the siren’s song and changed their CAD system. This was at a time when the PC-based AutoCAD® software was becoming successful and offered all the basic 2D design functionality on a PC at a fraction the cost per workstation of the “super mini” or SUN networks. Eventually only those users who used MEDUSA well beyond its 2D capabilities and had it well integrated into their manufacturing processes remained with Prime/CV.

MEDUSA software continued to support the transition from “super minis” to remote workstations, and in the 1990s, the UNIX
Unix
Unix is a multitasking, multi-user computer operating system originally developed in 1969 by a group of AT&T employees at Bell Labs, including Ken Thompson, Dennis Ritchie, Brian Kernighan, Douglas McIlroy, and Joe Ossanna...

 workstations from Sun Microsystems
Sun Microsystems
Sun Microsystems, Inc. was a company that sold :computers, computer components, :computer software, and :information technology services. Sun was founded on February 24, 1982...

 were a popular option for the CAD package.

Prime was divided into the two main divisions: Prime Hardware, which was responsible for the proprietary computer hardware, and Prime Computervision, which was responsible for the CAD/CAM business with MEDUSA and CADDS. With falling hardware sales Prime eventually stopped production of PrimOS computers and transferred its maintenance obligations to another company, thus being able to concentrate on the CAD/CAM software business. The company was renamed from Prime Computervision to Computervision (CV). Computervision’s main research and development centre for MEDUSA was at Harston Mill near Cambridge, where many of the development staff had been working on the software since the CIS days. When the company retrenched and moved its operations to Boston, USA in 1994, five former CV staff members with many decades of MEDUSA experience between them formed the software development company Quintic Ltd in Cambridge, which continued to provide MEDUSA development services to CV, and consultancy and customisation services to MEDUSA customers in the UK.

In 1998, CV was taken over by Parametric Technology Corporation
Parametric Technology Corporation
Parametric Technology Corporation is a U.S.-based company that develops, markets and supports software for product development. Its main products are for CAD/CAM, engineering calculations, and product lifecycle management. Its customers include companies in manufacturing, publishing, services,...

 (PTC). The development partnership with Quintic also transferred. After years of relative stagnation in the development of MEDUSA NG (Next Generation), there was a new push to launch the new release. MEDUSA NG was the first release to move from tablet-driven design to an icon tray and menu-based graphical user interface; but at that time it was still possible to use the tablet with MEDUSA.

Under PTC’s auspices, a new project, code-named "Pegasus" was launched. This was to develop a 2D drafting companion for Pro/ENGINEER® based on the MEDUSA technology.

In 2001, PTC sold all rights to the MEDUSA software to CAD Schroer, MEDUSA’s biggest reseller in Germany. CAD Schroer, which started as a drafting bureau in 1986, was an active MEDUSA user and had developed a number of add-ons for the software. Thus MEDUSA was now owned by a company that had grown up with the product. The development partnership with Quintic also transferred to CAD Schroer.

Under CAD Schroer, project Pegasus became the STHENO/PRO software, which was first launched in 2002.

The Fourth generation of MEDUSA, known as MEDUSA4, was launched in 2004. In included a comprehensive revamp of the functionality, the development of a Qt-based GUI, extensive interfaces and integrations with third party systems and data formats, as well as porting to Linux.

In 2005, CAD Schroer acquired its software development partner Quintic Ltd and founded CAD Schroer UK Ltd in Cambridge, MEDUSA’s home town.

The company continues to rigorously develop and support the software.

MEDUSA4 Add-On Applications and Modules

  • MPDS4: The MEDUSA4 PLANT DESIGN SYSTEM, a hybrid 2D/3D plant design and factory layout software suite with various modules covering all plant design disciplines and 3D visualisation software
  • MEDEA: The MEDUSA Electrical Design Application
  • MEDRaster Colour: Module for integrating and editing colour or monochrome raster data, such as scanned legacy drawings or photographs, into CAD designs
  • MEDInfo: Web-based engineering information and document management for MEDUSA4
  • CADParts: Standard CAD parts library with optional update service
  • MEDUSA4 3D PLUS: Sheet-based 3D modelling with optional Digital Terrain Modeller
  • MEDUSA4 PARAMETRICS: Extensive parametrics functionality for design process automation
  • MEDUSA4 SHEET METAL DESIGN: Powerful and flexible design of sheet metal parts
  • MEDUSA4 P&ID: The complete solution for creating intelligent process and instrumentation diagrams
  • MEDPro: MEDUSA4 and Pro/ENGINEER® integration
  • MEDLink: MEDUSA4 and Windchill® PDMLink™ integration
  • MED2SAP: MEDUSA4 and mySAP PLM® integration
  • MED2TC: MEDUSA4 and Teamcenter® integration
  • CADConvert Pro: Advanced DXF/DWG interface

MEDUSA4 Personal

MEDUSA4 Personal, launched by CAD Schroer in 2006, is a free 2D/3D CAD software for private use, which can be downloaded from the CAD Schroer website. Users have to register to receive a free 6-month license, which can be extended in perpetuity. MEDUSA4 Personal is a fully functional version which includes many features of the MEDUSA4 ADVANCED package (e.g. SMART Edit, basic 3D) as well as some additional add-on modules, such as the MEDRaster Colour image editing module, SMD Sheet Metal Design, and Parametrics. It is a multi-platform system available for Windows and several Linux distributions, including CentOS
CentOS
CentOS is a free operating system based on Red Hat Enterprise Linux . It exists to provide a free enterprise class computing platform and strives to maintain 100% binary compatibility with its upstream distribution...

, Fedora
Fedora (operating system)
Fedora is a RPM-based, general purpose collection of software, including an operating system based on the Linux kernel, developed by the community-supported Fedora Project and sponsored by Red Hat...

, Mandriva
Mandriva
Mandriva S.A. is a publicly traded Linux and open source software company with its headquarters in Paris, France and development center in Curitiba, Brazil. Mandriva, S.A...

, RedHat, SuSE and Ubuntu
Ubuntu (operating system)
Ubuntu is a computer operating system based on the Debian Linux distribution and distributed as free and open source software. It is named after the Southern African philosophy of Ubuntu...

.

Limitations

  • Print with watermark
  • Separate sheet format
  • Free node-locked license is limited to 6 months, but renewable

Sheet Conversion to PDF/DXF/SHE (MEDUSA4 Professional) for Commercial Use

In August 2009, CAD Schroer introduced an eSERVICES portal, which allows users of the free version of MEDUSA4 to convert the sheets created with MEDUSA4 Personal into PDFs, DXFs or MEDUSA4 Professional SHE files on a pay-per-conversion basis. The converted drawings appear without a watermark, and are fully licensed for commercial use.

MEDUSER User Group

From the 1980s there was a very active community of MEDUSA users in Germany. This MEDUSER Association discussed issues of software use, development, CAD/CAM data integration and database connectivity and developed concepts and demands put forward to the various software owners. MEDUSA forums have recently been revived with growing numbers of new users. There also continues to be a hard core of MEDUSA users who have deployed the system for over two decades.

External links

The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
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