%T A Versatile Hardware\-Software Platform for In\-Situ Monitoring Systems
%A Bernhard H.C. Sputh, Oliver Faust, Alastair R. Allen
%E Alistair A. McEwan, Steve Schneider, Wilson Ifill, Peter H. Welch
%B Communicating Process Architectures 2007
%X In\-Situ Monitoring systems measure and relay environmental
parameters. From a system design perspective such devices
represent one node in a network. This paper aims to extend
the networking idea from the system level towards the design
level. We describe In\-Situ Monitoring systems as network of
components. In the proposed design these components can be
implemented in either hardware or software. Therefore, we
need a versatile hardware\-software platform to accommodate
the particular requirements of a wide range of In\-Situ
Monitoring systems. The ideal testing ground for such a
versatile hardware\-software platform are FPGAs (Field
Programmable Gate Arrays) with embedded CPUs. The CPUs
execute software processes which represent software
components. The FPGA part can be used to implement hardware
components in the form of hardware processes and it can be
used to interface to other hardware components external to
the processor. In effect this setup constitutes a network of
communicating sequential processes within a chip. This paper
presents a design flow based on the theory of CSP. The idea
behind this design flow is to have a CSP model which is
turned into a network of hardware and software components.
With the proposed design flow we have extended the
networking aspect of sensor networks towards the system
design level. This allows us to treat In\-Situ Measurement
systems as sub\-networks within a sensor network.
Furthermore, the CSP based approach provides abstract models
of the functionality which can be tested. This yields more
reliable system designs.
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