itc 2012 rotating parts

1. UDP Based Wireless Telemetry Network and Data Acquisition
System for Rotary Application
Item type text; Proceedings
Authors Imay, Murat; Cranley, Nikki; Atman, Ozgur
Publisher International Foundation for Telemetering
Journal International Telemetering Conference Proceedings
Rights Copyright © held by the author; distribution rights
International Foundation for Telemetering
Downloaded 31-Mar-2017 00:37:39
Link to item http://hdl.handle.net/10150/581823

2. 1
UDP BASED WIRELESS TELEMETRY NETWORK AND
DATA ACQUISITION SYSTEM FOR ROTARY
APPLICATION
Murat IMAY, Nikki CRANLEY, Ozgur ATMAN
Turkish Aerospace Ind. FTI Department
Curtiss-Wright Avionics and Electronics, Acra Business Unit
mimay@tai.com.tr, NCranley@curtisswright.com, oatman@tai.com.tr
ABSTRACT
This paper presents an open system architecture with wireless network centric telemetry and
data acquisition over UDP/IP. This networked solution was designed and developed for iron
bird and helicopter rotor applications which present a significant challenge for data
acquisition and telemetry. Traditionally slip rings were used for data transfer however these
result in issues with low bandwidth, electrical noise, installation complexity, and high
maintenance costs. This paper describes a networked system using standardized technologies
and protocols that was used for data acquisition and recording of parameters such as
vibration, strain, and video on DAQ installed on the rotating part. The acquired data was
transmitted in real-time via the network-centric wireless telemetry link which was
synchronized with a ground-based DAQ used for real time processing of the rotor data.
KEYWORDS
Wireless Network, UDP/IP, PTP 1588, Slip Rings, Data Acquisition System, GPS.
INTRODUCTION
The wireless network centric data acquisition and telemetry solution described in this paper
was designed and developed for iron bird and helicopter rotor application in order to collect
and record parameters coming from rotating and static part sensors with GPS data time stamp.
This system comprises three subsystems; a static DAQ sub-system, a mobile DAQ sub-
system and the wireless network-centric telemetry interface. The static DAQ sub-system
monitors and records static parameters such as the engine, transmission etc. The mobile DAQ
sub-system can be used either as a standalone device or integrated with the static sub-system.
As a standalone device, it supports a battery and solid state recorder. As an integrated sub-
system it can interface with the static sub-system via wireless network centric telemetry in
order to measure and transmit parameters from the rotating components such as the hub,
swash plate and blades. This sub-system is reconfigurable and extendible to support additional
channel inputs, or additional data types. In fact, since the solution is realized entirely using
open standards-based network technologies, any device with an Ethernet interface can be
added to the architecture without any modification.

3.
The mo
rings w
data col
and disa
are low
equipme
and pro
challeng
These fa
Slip rin
transfer
either th
or rings
results
complex
fixed nu
PCM da
parts in
mature
challeng
otivation for
with a fully
llecting cap
advantage o
w bandwidth
ent costs. In
oprietary, th
ging to inte
factors ultim
ng technolo
rred from a
he brushes o
s can gener
in distort
xities; high
umber of ch
ata link solu
stead of usi
and proven
ging with re
r this work
open syste
pability. Inst
of PCM bas
h; electrica
n general, t
hey are exp
egrate equip
mately determ
CO
ogies are de
rotating un
or the rings
rate electri
ted data.
maintenanc
hannels, all o
ution is an
ing slipring
n solution.
egards integ
is to replac
m architect
trumentation
sed data lin
al noise; in
traditional s
pensive and
pment from
mine the su
ONVENTI
Figu
esigned for
nit to a stati
are stationa
cal noise b
Other dis
ce costs due
of which ca
alternative
g. PCM tech
However,
gration in m
2
ce traditiona
ture wireles
n designers
nk using thi
nstallation c
solutions fo
d due to th
different m
uccess of the
IONAL AP
ure 1 Slip R
r rotary app
ionary one,
ary whilst th
between the
advantages
e to size; li
an significan
solution to
hnology is o
as previou
multi-vendor
al PCM bas
ss network
s avoid the d
s approach.
complexitie
or acquisitio
he closed n
manufacturer
e project.
PPROACHE
Ring
plications w
as shown i
he other com
e stationary
of such s
mited numb
ntly affect th
transfer da
old, expens
usly mentio
r systems.
sed telemetr
centric tele
difficulties
. Difficultie
s; and high
on on rotati
nature of th
rs without m
ES
whereby cu
in Figure 1.
mponent rot
y and rotati
systems in
ber of rotati
he cost of th
ata from rot
sive, and pr
ned, PCM
ry solutions
emetry and
of slip-ring
es of using
h maintena
ing parts ar
he technolo
major modi
urrent or vo
. In a slip r
tates. These
ing contact
nclude: ins
tions and a
he system.
tating parts
roprietary bu
based syst
s for slip
reliable
g designs
slip ring
ance and
re closed
gy, it is
ification.
oltage is
ring, it is
e brushes
ts which
stallation
limited /
to static
ut it is a
tems are

4.
An open
the prob
such as
solution
integrat
to the a
solution
wireless
54Mbps
capacity
Figure 2
are conn
to the sw
GPS tim
IEEE15
Grandm
with ev
system o
NE
n system ar
blems assoc
PCM. The
n is its ope
tion. Any de
architecture
n enables an
s networkin
s and an ef
y for high sp
2 shows the
nected to th
witch box.
me to mak
588 PTP ti
master capab
very measur
on the rotat
EW MEAS
rchitecture
ciated with
main advan
en system
evice that su
e without m
n almost “p
ng technolo
ffective thr
peed data or
e system arc
he switch bo
Data is acq
ke one com
ime protoc
bility. This
rement and
ting part and
SUREMEN
Figure 2 S
using wirel
mechanica
ntage of Eth
architecture
upports an E
modification
plug and pla
ogies such
oughput ca
r high defin
chitecture w
ox, howeve
quired at the
mplete and
ol provided
enables the
d enables sy
d the static d
3
NT APPRO
System Ar
less network
al slip rings
hernet base
e, cost eff
Ethernet int
n. Such an
ay” capabili
as IEEE 80
apability of
nition video
which compr
er there is a
ese two dif
total missio
d by the s
e system to
ynchronizat
data acquisi
ACH AND
chitecture
k centric te
and conve
ed wireless t
fectiveness,
terface can b
open syste
ity for data
02.11G WL
f ~26Mbps
.
rises a rotat
wireless lin
fferent locat
on. Both D
switch box
have high r
tion betwee
ition system
D SOLUTIO
echnologies
ntional tele
telemetry o
and ease
be easily an
em and ope
acquisition
LAN have
which is m
ting part and
nk connecti
tions and m
DAUs are s
x which ha
resolution t
en the mobi
m.
ON
can solve
emetry tech
over the PCM
of installat
nd seamless
en standard
n systems. S
an RF line
more than a
d a static pa
ing the rota
merged base
synchronize
as embedde
time tags as
ile data acq
many of
hnologies
M-based
tion and
ly added
ds based
Standard
e rate of
adequate
art. Both
ting part
d on the
ed using
ed 1588
ssociated
quisition

5.
This sys
with its
which c
from ot
synchro
Switch
In any n
and from
sub-syst
wireless
links. B
to their
This sw
power u
synchro
Transm
The sys
supports
depende
stem, show
own batter
can be recon
ther data ty
onized with
Box
networked s
m sub-syste
tem. The sw
s network c
By far, the m
destination
witch was ch
up” capabili
onize all dev
mitter
stems trans
s a range o
ent on the a
F
wn in Figure
ry, transmitt
nfigured to h
ypes. Moreo
the static da
system the
ems in the
witch box co
centric brid
most import
n. The swit
hosen not o
ity, but it a
vices within
mitter oper
of up to 1
ntenna solu
Figure 3 M
3, can be u
ter, built-in
handle addi
over, the m
ata acquisiti
SYSTE
switch is a
network, in
omprises a n
dge can be
ant task of
ch box use
only for its
also had an
n the system
rates license
6km with
ution.
4
Mobile Data
used as a st
solid state r
itional chan
mobile data
ion system
EM COMPO
key compo
n this instan
number of p
connected
the switch
ed in this sy
high perfor
embedded
m architectur
e free ISM
a PHY rat
Acquisitio
and-alone m
recording, a
nnel inputs,
acquisition
via the netw
ONENT
onent that a
nce the stati
ports to whi
using point
is to reliabl
ystem was
rmance, reli
IEEE 1588
re.
M frequency
te of 54Mb
on System
mobile data
and signal c
or to accom
system can
work switch
llows data t
ic sub-syste
ich static DA
t-to-point fu
ly and quick
the NET/SW
iability, and
8 grandmast
bands of
bps.The ach
a acquisition
conditional
mmodate acq
n be integra
h box.
to be transm
em and the
AQ sub-sys
full-duplex
kly forward
WI/004 fro
d its unique
ter that was
5.0 - 5.8 G
hievable ran
n system
modules
quisition
ated and
mitted to
rotating
stem and
Ethernet
d packets
om Acra.
e “live at
s used to
GHz and
nges are

6.
Antenn
An omn
coverag
Vertical
signals
Real Ti
nas
ni direction
ge with 20 w
l dipole an
coming from
Figure 4 Tr
ime Data M
nal antenna
watts of pow
ntennas wer
m the rotati
ransmitter A
Monitoring
Figu
is used on
wer.
re selected
ng part, as i
Antenna Pa
re 6 IADS R
5
n the rotatin
and oriente
illustrated i
attern F
Real-Time A
ng part in o
ed in such
n Figures 4
Figure 5 Re
Analysis Soft
order to pro
a way to
and 5.
eceiver Ante
tware
ovide a 360
cover all th
enna Pattern
0 degree
he radio
n

7. 6
The IADS software from Symvionics, shown in Figure 7, was used for monitoring and
analysis of data in real-time. This software afforded significant time-saving and effort
during the test. The test bench can be also stopped automatically in a real time using this
software in case of any threshold and overload situation of sensors defined in the test
configuration.
CONCLUSION
This paper presented the design, development and real application of a UDP based
wireless network centric data acquisition system for rotary application. This solution was
been successfully deployed many times during the test campaign. Not only has this been
successful in terms of the reliability, real-timeliness and fidelity of the acquired data but
also it has demonstrated the significant advantages of open standards based architectures
in terms of installation, flexibility, cost-saving and maintenance.