System Applications - Aerospace

Data Acquisition System for Aircraft Fatigue Testing Summary: This is a VXI-based structural test system for business jet aircraft. The customer required a turnkey data acquisition system complete with application software. We supplied a DAQ Director™ system for this application.

This system is used for static and dynamic structural testing on full-size corporate jet aircraft. Our DAQ Director, operating under Windows NT, provides the software application for this system. Our FOXI fiber optic interface provides the communication between the host PC and the VXI mainframe, using a V122 PCI interface and a V120 Slot-0 controller. A V208 host ADC module, along with a V243 low-level signal conditioner and seven V241 high-level multiplexer modules handle approximately 600 channels of strain gage, thermocouple and pressure inputs. The system scans each of the channels at 100 samples per second.

Our SC20 bridge signal conditioner cards were not available when this system was purchased; therefore, third-party signal conditioners were used, with their high-level outpu ts coupled to V241 multiplexer channels. In addition to the analog channels, the system monitors 16 isolated digital Inputs and provides 16 form-C relay contact outputs. An IRIG time interface module was included to provide time stamping.

The primary KineticSystems products used in this application are:

• AC10 DAQ Director Data Acquisition Software
• V120 FOXI VXI Slot-0 Controller
• V122 FOXI PCI Host Adapter
• V195 13-Slot, C-Size, VXIbus Mainframe
• V208 16-bit, 100,000 Sample/sec ADC Subsystem
• V241 96-channel, High-level, Scanning MUX
• V243 96-channel, Low-level Signal Conditioner
• V387 128-channel Digital Input/Output

This application note is provided "as is" without any warranties of any kind, either expressed or implied, including but not limited to the implied warranties of merchantability or fitness for a particular purpose. KineticSystems Company, LLCfurther does not warrant the accuracy and completeness of the material contained herein. KineticSystems Company, LLC may make changes to this material, or to the products described in it, at any time without notice.

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