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Upgraded
high-speed data acquisition systems will be assembled using a variety
of components. Three Pentium 4 computers will be interfaced with
high-speed multiplexers, signal conditioners, and data converter
boards. The data acquisition systems will be interfaced with the
servo-hydraulic system controls and connected to the Internet.
The main sensors consist of an advanced fiber-optic
signal conditioning unit and large-stroke displacement transducers.
The fiber optic instrumentation consists of a high-resolution, high-precision
system. This is a high-speed sensor conditioner that can adapt to
slow or fast testing (sampling rates up to 1000Hz). All data acquisition
systems will be capable of multi-channel measurements of temperature,
pressure, force, displacement, or strain using a common sensor-conditioning
unit with interchangeable sensors. Magneto-strictive displacement
measuring devices with 2-meter ranges also will be used. These devices
are a necessary measuring tool for large-displacement SFSI testing.
| Data
Acquisition Systems |
Performance
Specification |
| Computers |
High-speed, large storage capacity, Internet
connectivity |
| A/D boards, Multiplexers |
16-bit resolution, expandable for 128 to 256
data channels |
| Signal Conditioning |
Stable power supply; low noise; independent variable
gain; capable of using a wide variety of transducers |
| Sensors |
Large displacement (up to 2 meter), precision
and accuracy, compatibility with signal conditioning and other
control systems, fiber-optic system capable of measuring strains
up to 5000 to 10000 microstrain, laser extensometers for large
displacement measurements. |
For further information about our Data Acquisition systems,
click here.
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