Automated
factories and processes are too expensive to be rebuilt for every design change
so they have to be highly configurable and flexible. To successfully
reconfigure an entire production line or process requires direct access to most
of its control elementsswitches, valves, motors and drivesdown to a fine
level of detail.
In the
real world, situations constantly arise that call for human intervention. When
so-called "automated" machines get thrown off track, or become faulty,
experts have to be summoned to step in and troubleshoot the problems. But, this
expertise is scarce and most often not available when the problems occur.
As
machines grow more autonomous, the kinds of things that can go wrong with them
become steadily more exotic, complex and hard to diagnose (especially when more
than one thing goes wrong simultaneously). Moreover, because automated processes
tend to run more quickly than manual onesand are necessarily integrated into
other operations around the plant and sometimes even beyond itthe cost and
related ripples of letting an exception go uncorrected for even a few minutes
can be very high.
Today,
industrial automation PLCs and DCS with remote I/O and supervisory HMI - is
still relatively in the dark ages as far as complete automation is concerned.
There is still too much dependency on manual supervision, which is usually too
slow to correct real-time problems. When a serious situation occurs such as
nuclear accidents like the Three Mile Island incident thousands of alarms
occur at once, and manual intervention is ineffective.
With a
typical automated production line, or process control system, unexpected
failures cause significant and expensive downtimes while technicians scramble to
diagnose and correct problems. In a semiconductor product plant, millions of
dollars worth of components can quickly become junk.
By
definition, problems arising in automated environments should be detected,
diagnosed and fixed "automatically". To be really effective, automated
systems must include predictive and real-time diagnostics, with error-correction
that requires little or no manual intervention. Automatic processes and machines
must include self-diagnosis and self-correction.
The
promise of remote-controlled automation is finally making headway in
manufacturing settings and maintenance applications. The original
machine-based vision of automationpowerful super-robots without people to
tend themunderestimated the importance of communications. Today, this is
purely a matter of networked intelligence now well developed and widely
available.
Communications
support of a very high order is now available for automated processes: lots of
sensors, very fast networks, quality diagnostic software and flexible
interfacesall with high levels of reliability and pervasive access to
hierarchical diagnosis and error-correction advisories through centralized
operations.
With
technology available today, fully automated factories - in a truly realistic
sense - are quickly becoming an accepted fact.
*******************
Jim
Pinto is a technology entrepreneur, investor, futurist, writer and commentator.
You
can email him at: jim@jimpinto.com.
Or look at his writings, poems, prognostications and predictions on his website:
www.JimPinto.com