Compact System for Measuring Vibration at Different locations of Car Seat and Human Driver in Dynamic Condition

Vibration occurrence during the transportation is one of the key factors to characterize the driver’s and passenger’s comfort level. Piezoelectric accelerometers are most commonly used for measuring the vibration, though not suitable for low frequency ranges. For precise measurement of low level frequency, sensors capable of measuring accelerations to be utilized. Micro-electro-mechanical-system (MEMS) or Integrated Electronics Piezo-Electric (IEPE) are known as most appropriate sensors to be used to measure vibration to the sub-Hertz region. An in-vehicle compact vibration measurement system had been designed using NI 9234 Module and single axis IEPE transducer. Dytran 3055 was connected to data acquisition software in a laptop through USB cable. The signalfrom Digital Read Out (DRO) system were gathered in .SOT format and was processed through the “m+p Analyzer” software tool developed by m+p international. Vertical vibration data in terms of acceleration at various locations of car seat and human driver had been collected from the test run and presented in this paper.