telemetry
critical recording function by having all
the data sources independently record their
own data on their respective systems. In
addition to aggregating the data for
recording, the Data Host simultaneously
provides a UDP broadcast of the data
stream for real-time analysis.
COMMAND AND CONTROL
Like all the individual hardware systems,
the NetView Data Host integrates with the
LCS through a shared memory
architecture. This allows the LCS to send
commands to the Data Host to start, stop,
record and to take single scans. All
communication between systems and data
handling information can now be unified
under a common interface, providing the
test conductor with a complete overview to
command operations, monitor the good
working order, and act real-time helped by
warnings and alerts as when any
acquisition system go offline for example.
This synthesis of all appropriate pieces of
information avoids unnecessary
redundancy with only one test conductor at
the helm. It also saves on the training of
less staff and avoids learning the
specificities of different software.
With Network balancing and processor
utilization in mind, Telspan employed the
NetView Data Distributor which acts as
a “gateway” between the Data Host and the
NetView Data Clients. Using a dedicated
10G network, the Data Host UDP broadcasts
42 SHOWCASE 2020 \\ AEROSPACETESTINGINTERNATIONAL.COM
all the data where the Data Distributor,
in-turn, rebroadcasts the data onto the
dedicated 1G display client network.
As an option, the Data Distributor will
decimate the full rate data to further
reduce network loading since Display
Clients can be both on the LAN (Local Area
Network) or remotely connected over a
WAN (Wide Area Network).
Since all data from all systems is now
available as a single stream, this gives test
conductors and analysts a whole new level
of real-time capability. Specific to this
large-scale structural test the Data
Distributor will also add other real-time
functions like trend analysis, strain
surveys, strain prediction/comparison, go/
no go end-point averaging, etc. These
functions help to reduce test time by
automating many of the functions the
analysts would have done manually in
the past.
REAL TIME DISPLAY
With Data Fusion, analysts have a
completely new way of looking at data with
the NetView Data Client. Instead of
discretely looking at one systems data
stream, Data Client can display any
channel from any system on any real-time
display. Real-time displays include XY plot,
tabular, bar chart, line graph and strip
chart and include warning/alarm limits,
prediction lines and are individually
customized to each analyst’s workstation.
4 // Data from any system
can be visualized on any
real-time display
“netview Data Client can display any channel
from any system on any real time display”
4
Any one display can also fuse
measurements of several sources to refine
the analysis; for example, data from a foil
Strain Gage and Fiber Optic System can be
combined to complement, improve, or
simply compare data to increase confidence
in the findings.
This innovative architecture provides a
new class of performance for the next
generation ground test facilities with the
use of open standards, technologies, and
products that are readily available. Other
sources of data are easily added with
systems that provide native Chapter 10
data stream or a Telspan gNGU is used.
Data Fusion is more than just
combining data from multiple sources.
Data Fusion gives the test designers, test
conductors, test engineers and analysts a
suite of new capabilities. Now, all recorded
data from all systems is in the same
format and all sources data is available for
display on a single GUI for real-time and
post processing. This was all the more
critical in this implementation because of
the sheer scale of this testing. The same
approach would certainly add a lot of
efficiency on a much smaller scale, where
the architecture described could be limited
to a single computer running NetView to
cover collection, recording and
distribution of data. \\
Chris Lloyd is director of sales and marketing at
Telspan Data
/AEROSPACETESTINGINTERNATIONAL.COM