Patent ID: 7236868

Claim:
In an earth moving machinery having an operation seat in an interior of an operation cab installed at an upper frame of a lower running body, the apparatus for monitoring an operator vibration for an earth moving machinery with an operation cab, comprising: an operation seat which is installed in an interior of the operation cab and which includes an accelerometer for sensing and converting acceleration into a 3-axis channel vibration signal; a vibration measuring device which is installed in a lower side of the operation seat and which measures a 3-axis vibration in real time by receiving the 3-axis channel signal and outputs an 3-axis vibration value based on the measured vibration; an electronic control unit which is installed between the operation seat and the vibration measuring device and which computes a mean vibration value and an impact vibration value generated in a predetermined time interval by receiving the 3-axis vibration value and outputs vibrations of ELV(Exposure Limit Value); and a display device which is installed in an interior of the operation cab and which displays the ELV on a LCD screen in real time, so that an operator easily monitors the ELV through the LCD screen.