On the image below there is an example of human vibration done on a motorcycle. Whole body vibration measurement human exposure to whole body vibration should be evaluated using the method defined in iso 2631 1.
Bass The Physical Sensation Of Sound Audioholics
Human body vibration measurement. Among the most important and most sobering steps is discovering what is your vibration when you begin. For health and safety evaluations this is through the. Regardless of what technique of raising your vibration to pick you would better decide a few things in advance. The tri axial accelerometer was attached to a steering wheel to measure hand arm vibrations. If it is not feasible to obtain precise alignment of the vibration transducers with the preferred basicentric axes the sensitive axes of transducers may deviate from the preferred axes by up to 15 where. Humans are generally exposed to many different forms of vibration in their daily lives.
The human vibration module does create a display automatically. When measuring human vibration it is important to use the correct weightings for your measurement situation to account for the different resonances within the human body. The human and whole body vibration module tests and measures the effect of vibration on the human bodythe extracted parameters allow the simple assessment of the injuries risk for workers exposed to constant vibrationour solution supports the whole body and hand arm vibration measurement are supported according to all relevant international standards iso 5349 iso 8041 iso 2631 1 and iso. Whole body vibration is applicable to motions transmitted from workplace machines and vehicles to the human body through a supporting surface. The ni sound and vibration measurement suite provides weighting filters that you can apply to human vibration signals. Model ks963b100 s measuring duration from 1 minute to 1 day.
It is however rather different from whole body vibration in the type of problems to which it gives rise. Vibration should be measured according to the coordinate system originating at a point from which vibration is considered to enter the human body ie. The following illustration shows the coordinate system used to measure whole body human vibration as defined by iso 263111997. Hand arm vibration is the second large problem area where transmission into the human body is concerned. Following is a chart of common vibration scenarios with the appropriate frequency weighting factor for each axis. Measurement of vibration transmitted to the human body by the seat surface the backrest or the feet to iso 2631 for application with a triaxial seat pad accelerometer eg.
Measurements with hvm200 human vibration meter. The seat or the feet figure 1. Whole body vibration wbv is a generic term used when vibrations mechanical oscillations of any frequency are transferred to the human bodyhumans are exposed to vibration through a contact surface that is in a mechanical vibrating state. There are well meaning individuals out there who will measure your vibration whichever way they do it. The driver was sitting on a seat pad sensor to measure whole body vibration.
Gallery of Human Body Vibration Measurement
