The ISO 2631 Module designs and processes data with ISO 2631 frequency weighting curves. Three principal frequency weightings are described in the ISO 2631 Standard: Wk for the Z axis or vertical direction, Wd for the X and Y axes, or horizontal direction, and Wf for motion sickness.
Additional frequency weightings defined for the special cases of seat-back measurements, rotational vibration and vibration under the head.
The ISO 2631 Module supports all 8 of the defined ISO 2631 frequency weighting curves, Wb, Wc, Wd, We, Wf, Wj, Wk and Wm weighting filters. In addition, the the ISO 5341 Wh and British BS 6841 Wg frequency weighting filters are included to provide a complete, standards based frequency weighting solution.
Acceleration data is processed by the frequency weighting filter in one step, where the filter is designed as per the selected specification and the data is filtered in the time domain with a high precision digital filter.
Key Features
Simple Dialog Box User Interface
Conforms to ISO 2631-1, ISO 2631-4, ISO 5341-1 and BS 6841 Specifications
Supports ISO 2631 Wb, Wc, Wd, We, Wf, Wj, Wk and Wm Frequency Weighting Filters
Supports ISO 5341 Wh Frequency Weighting Filter
Supports BS 6841 Wg Frequency Weighting Filters
One Step Design and Data Processing
High Precision Digital IIR Cascaded Bi-Quad Filter Implementation
Optional Frequency Domain Weighting Curve Display
See our DADiSP/ISO 2631 Frequency Weighting Module web pages for full information.
"DADiSP makes it possible for an engineer to hit the button to turn the program on at the end of the day, walk out of here, then come in the morning and find the work all done."
Rich Bond, Ford Heavy Truck
"DADiSP makes this kind of analysis very easy to do, so that I only have to worry about the science, not the programming."
Dr. Dan Davison, University of Houston
