Concurrent SIGnal Workbench is a high-performance,
real-time dynamic data processing and monitoring system for engine,
turbomachinery, structural and other vibration test applications.
SIGnal Workbench is a complete solution that provides everything
needed for high-cycle fatigue testing – a real-time computer
system, data acquisition input cards, programmable signal conditioning,
cabling and powerful GUI test software for data acquisition control,
data management, display and post-test analysis.
• EDAS SignalBoss data acquisition
and test software
• Concurrent real-time multiprocessor platform
or Opteron processors
Linux real-time operating system
• Analog input
to 256 and higher input channels
24-bit Sigma-Delta cards
simultaneous samples per second
• Signal conditioning
selectable conditioning modules
current and voltage sources
and DC coupling
• Rackmount cabinet packaging
Data Analysis and Monitoring
SIGnal Workbench systems feature EDAS SignalBoss software, a comprehensive
application suite that takes you step-by-step though the testing
process. SignalBoss requires minimal training and allows users
to quickly begin productive testing and data monitoring. SIGnal
Workbench systems run Concurrent’s RedHawk™ Linux® real-time
operating system. RedHawk provides the fully deterministic performance
needed in high-performance, time-critical test applications.
Users can view any type of time or frequency domain plot in
real-time while recording all data digitally. Data produced by
SIGnal Workbench can include digital raw time domain, frequency
domain with time domain statistics and compressed peak frequency
domain data files. All SignalBoss software set-up and operation
is via point-and-click GUI. Setup can also be performed using
comma-delimited command files. Data inputs to the system include
analog time domain read in real-time or data direct read from
commercially available digital tape formats.
Programmable Signal Conditioning
SIGnal Workbench features individual-programmable signal conditioning
modules that provide four channels of configurable transducer
interface circuitry on a 3U euro-card. Each channel provides
a programmable current/voltage output source and a fault-protected
programmable gain amplifier. Selecting the voltage source mode
allows the module to be configured as a strain conditioner.
All of the functionality required to condition signals from
sensors that use ¼, ½ or full bridge transducer
configurations are supported in this mode.
Selecting the current source mode allows the module to support
transducers that require constant current excitation, such as
integrated electronics piezoelectric (IEPE) transducers. Channels
can also be configured as instrumentation amplifiers to monitor
general-purpose analog input signals. Conditioned signals are
driven out of the module by low-impedance, high-speed operational
amplifiers. All current and voltage sources are programmable
via easy-to-use graphical interface.
Three shrouded headers on the backplane of a signal conditioning
chassis are used to terminate the input and output signals for
each module. The first two headers terminate the four input signal
connections. The third connecter provides the buffered output
signals. Outputs can be connected to the high-impedance differential
input of SIGnal Workbench’s analog input cards to provide
a complete signal conditioning and A-to-D conversion solution.
All output is routed through the real panel of the signal conditioning
Real-Time Data Acquisition Platform
SIGnal Workbench systems include a Concurrent iHawk™ real-time
computer platform custom-configured to the needs of your test
application. Hard drive storage, memory size and processor performance
can be selected in accordance with test run durations and channel
count. SIGnal Workbench systems feature one or more 32-channel,
24-bit Sigma-Delta analog input boards supporting a rate of 200
Ksamples per second per channel. Other simultaneous sampling
analog input cards are also available. The iHawk computer system,
signal conditioning chassis and cabling can be optionally mounted
in a mounted in a 14U or 34U rackmount cabinet.
Filtering and Finite Analysis Software Options
SIGnal Workbench’s optional DataDetective bulk data screening
software can scan large volumes of electronic vibration data
files and catalog peak response information. Results can be assigned
to modes, ratioed to other locations and compared to limits.
Scanned electronic data files can be produced by a SIGnal Workbench
system or by other systems using custom file translators. DataDetective
produces and interfaces to a database that can be sorted, filtered
and exported to other application formats such as comma separated
(CSV) or MATLAB formats. Each entry in the database is linked
directly with the file that produced the entry. This permits
the user to immediately call up the parent data file and examine
responses more carefully. Files are viewed interactively by clicking
on the entry in the database.
SIGnal Workbench’s optional GageMap is a user-friendly
software tool that simplifies interaction with finite element
models for test planning, model verification and test data analysis.
GageMap makes it easy to extract finite element data for direct
comparison to experimental measurements.