Environmental Engineering Reference
In-Depth Information
development and verification; life cycle (hu-
man) diversity is provided by different teams of
developers.
Scalability of I&C platform RADIY permits
to produce different types of safety-critical sys-
tems without essential changing of hardware and
software components. The I&C platform RADIY
provides the following types of scalability: scal-
ability of system functions types, volume and
peculiarities by changing quantity and quality of
sensors, actuators, input/output signals and control
algorithms; scalability of dependability (safety
integrity) by changing a number of redundant
channel, tiers, diagnostic and reconfiguration
procedures; scalability of diversity by changing
types, depth and criteria of diversity choice.
The FPGA-based I&C RADIY plat-
form comprises both upper and lower levels
(Kharchenko&Sklyar, 2008). The upper level has
been created on purchased IBM-compatible indus-
trial workstations. The software for the upper level
RADIY platform was developed by RPC Radiy
and is loaded on the workstations. The functions
of the upper level workstations are the following:
receipt of the process and diagnostic information;
creation of a man-machine interface in the Control
Room; display of process information on each of
the control algorithms relating to a control action
executed by I&C system components; display of
diagnostic information on failures of I&C system
components; registration, archiving and visualiza-
tion of process and diagnostic information.
The lower level of the RADIY platform consists
of standard cabinets including standard functional
modules blocks). The RADIY platform comprises
the following standard cabinets (Bakmach et al.,
2009):
•
Signal Forming Cabinets performs input-
ting and processing of discrete and analog
signals, processing of control algorithms,
and formation of output control signals.
•
Cross Output Cabinets receives signals
from three control channels (signal forma-
tion cabinets) and forms output signals by
“two out of three” mode.
•
Remote Control Cabinets controls 24 actu-
ators on the basis of Control Room signals,
automatic adjustment signals and inter-
locks from signal formation cabinets.
•
Signalling Cabinets forms control signals
for process annunciation panel at Control
Room and others.
The platform includes the following main
modules: chassis and backplanes; power supply
modules; analog input modules; normalizing
converter modules, thermocouples; normalizing
converter modules, resistive temperature detector;
discrete input modules; discrete information input
modules, pulse; potential signals input modules,
high voltage; protection signal forming modules
(logic modules); analog output modules, voltage;
analog output modules, current; discrete output
modules; potential signal output modules; solid-
state output modules; relay output modules; actua-
tor control modules; fiber optic communication
modules; system diagnostic modules; fan cooling
modules etc.
The latest RPC Radiy innovation is the FPGA-
based Digital Instrumentation and Control Plat-
form RadICS. This is a new generation product,
designed in 2011 on the basis of an earlier RADIY
platform having more than 10 years of experience
in a platform design, manufacturing, operation, and
maintenance. The RadICS platform provides IEC
61508:2010 SIL 3 architecture in an individual
chassis, fast response time (less than 5 ms) and a
comprehensive set of functional modules.
• Normalizing Converters Cabinets performs
inputting and processing of discrete and
analog signals as well as feeding sensors.
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