In message <[email protected]>, dated Fri, 20 Jul 2007, "Kunde, Brian" <[email protected]> writes:
>Is it possible to use silicon chips, firmware, and software in such a >circuit? With considerable difficulty, and no guarantee of success. >Can such an approach be used and if so what is involved in qualifying >it? See IEC 61508. One aspect to consider is how much of the sensor data is used to protect the machine from damaging itself rather than injuring the operator. Protecting the machine is a matter for the manufacturer, unless failure could result in injury to people; protecting the operator is a matter of standards and regulation. So you might be able to simplify the operator protection system by making the machine protection system separate. -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk There are benefits from being irrational - just ask the square root of 2. John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas [email protected] Mike Cantwell [email protected] For policy questions, send mail to: Jim Bacher: [email protected] David Heald: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________
