Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Construction or agricultural-type vehicle
Reexamination Certificate
2007-06-26
2007-06-26
Camby, Richard M. (Department: 3661)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Construction or agricultural-type vehicle
C180S089120
Reexamination Certificate
active
11481620
ABSTRACT:
An apparatus for monitoring an operator vibration for an earth moving machinery with an operation cab is disclosed. 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, there is provided an apparatus for monitoring an operator vibration for an earth moving machinery with an operation cab which comprises an operation seat which is installed in an interior of the operation cab and which includes an acceleration sensor for sensing and converting vibration into a 3-axis channel signal; a vibration measuring device which is installed in a lower side of the operation cab and which measures a 3-axis channel 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; 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.
REFERENCES:
patent: 5536059 (1996-07-01), Amirouche
patent: 5785803 (1998-07-01), Schiessl
patent: 5908456 (1999-06-01), Wahlers
Camby Richard M.
Ladas and Parry LLP
Volvo Construction Equipment + Holding Sweden AB
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