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@MISC{Stollenwerk:861640,
author = {Stollenwerk, André and Derks, Andreas},
title = {{ASMO}: a decentralized and verifiable interoperability
platform in intensive care; 2.1},
address = {Aachen},
reportid = {RWTH-2023-00139},
year = {2023},
abstract = {This publication contains the printed circuit board (PCB)
layout files for a decentralized and verifiable
interoperability platform in intensive care. The files are
stored in the format of Autodesk EAGLE Version 9. Most of
the other PCB layout design software is also able to read
this format. (However, the format is XML-based, which makes
it on a basic text level interpretable). There are two
files. The .sch file gives the schematic, which is the
description of the interconnection of the different parts of
the circuit. Here the focus lies on readability. The second
file (namely the .brd file) is one concrete implementation
of the given schematic. On the one hand this board file can
be used to rebuild the presented interoperability platform
but on the other it can also be used to adopt the platform
to their very specific needs. <br/> This platform is
motivated by the need for interconnected medical devices,
which enable new therapies and automate existing ones.
Following this approach, we can identify two challenges:
Interoperability and Verifiability. Due to various
manufacturers and interfaces, interoperability is often not
directly possible but needs to be enabled with the help of
auxiliary hardware. Addressing the demand for safety of the
interconnected medical application, verifiability is
essential and depends, among other aspects, on the
complexity of the system, which is increasing with the
dimension of interconnected devices. However, many of the
state-of-the-art medical hardware platforms neglect this
need for verifiability. They often rely on a centralized
unit, running a Linux operating system containing e.g.,
closed source libraries. Therefore, in this publication we
present the ASMO hardware platform, which provides various
interfaces to enable interoperability. The abbreviation ASMO
is based on the Greek expression for safe translation
(άσϕαλής μετασχηματίζω). Additionally,
in the architecture using the proposed hardware, the
workload is distributed such that the complexity of each
unit can be reduced, which is beneficial for the
verification of the used algorithms, without reducing the
overall processing capabilities. Each ASMO board is based on
a STM32F767ZI microcontroller, which offers enough
computational power to perform embedded machine learning. By
running a low-level real-time operating system, the
verifiability can be further preserved, and abstraction
layers are available to easily upgrade the interconnected
medical setup if a device needs to be introduced. Thanks to
the modular design of the ASMO board and the publicly
available layout, it can even be adapted to meet new
requirements like custom protocols or interfaces. <br/> The
presented platform was initially developed in the context of
the dissertation of André Stollenwerk. This first version
was using an Atmel AT91SAM7 microcontroller. Being inspired
by an evaluation-board for this microcontroller, which was
used in the first experiments, a platform suitable for agile
biomedical applications was developed. The use-case was the
automated control of an ECMO in conjunction with the
mechanical ventilation. This version 1 of the board
exclusively offered CAN as communication interface to
interconnect the different nodes of the resulting setup.
Until 2020 the existing platform was used in three
additional projects. In 2020 it was ported to the
STM32F767ZI microcontroller as version 2 of the design. The
porting to the STM microcontroller, among other things,
introduced ethernet as an additional communication interface
for interconnection. Ongoing from Version 2 in the presented
Version 2.1 some minor design issues were addressed.},
cin = {122810},
cid = {$I:(DE-82)122810_20140620$},
pnm = {DFG project 224967929 - Kooperierende Regelung von
extrakorporaler Lungenunterstützung und Beatmung für die
Therapie des Lungenversagens (ECLA-VENT) (224967929) /
BMBF-031L0134B - Alternativmethoden - Verbund: AutoMock -
Entwicklung eines vollautomatisierten in vitro Teststands
(Mock Loop) - Ein künstlicher Kreislauf als Ersatzmethode
zur Biokompatibilitätstestung von Membranoxygenatoren und
zur Transplantationssimulation (BMBF-031L0134B)},
pid = {G:(GEPRIS)224967929 / G:(DE-82)BMBF-031L0134B},
typ = {PUB:(DE-HGF)32},
doi = {10.18154/RWTH-2023-00139},
url = {https://publications.rwth-aachen.de/record/861640},
}
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