A computer-controlled, on-board data acquisition system for wind-tunnel testingA computer-controlled data acquisition system has been developed for the 40x80-foot wind tunnel at Ames Research Center. The system, consisting of several small onboard units installed in the model and a data-managing, data-displaying ground station, is capable of sampling up to 256 channels of raw data at a total sample rate of 128,000 samples/sec. Complete signal conditioning is contained within the on-board units. The sampling sequence and channel gain selection is completely random and under total control of the ground station. Outputs include a bar-graph display, digital-to-analog converters, and digital interface to the tunnel's central computer, an SEL 840MP. The system can be run stand-alone or under the control of the SEL 840MP.
Document ID
19750039829
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Finger, H. J.
Cambra, J. M. (NASA Ames Research Center Moffett Field, Calif., United States)