Mobile Dynamics Data Acquisition and Analysis Facility

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Mobile Dynamics Data Acquisition and Analysis Facility

C. E. Thomas

The mobile data acquisition and analysis facility (van) was designed to acquire and analyze vibration and acoustic data in an efficient manner. The facility is mounted on a two-and-one-half ton Dodge D-500 truck chassis. It is completely self-sufficient in that it has a built-in 30-KW, 60-cycle power pack driven by the truck engine. The van has a capacity for simultaneously recording forty-two channels of data, using wide band FM magnetic tape recorders, over the frequency range of DC to 20 KC. A central system supplies coded timing data to all recorders so that real-time correlation of all data is assured. Signals are fed into the van by means of shielded cables stowed on power-driven reels on both sides of the truck chassis. The facility is equipped with a dual channel heterodyne analysis system for narrow band (1 to 50 cps) continuous spectrum analysis. It also has a Bruel and Kjaer system for octave and third octave analyses. Necessary auxiliary equipment, such as calibration standards, power supplies, signal conditioning equipment, direct recording systems, oscilloscopes, oscillators, and maintenance equipment is self-contained. (Author)