CESVA VC431, User Manual, Page: 8 / 72

6
Moreover, it measures the MTVV
V
parameter, defined as the maximum MTVV value of the
combined total acceleration value.
To perform these measurements it is necessary to have the triaxial accelerometer
AC032 .
The VC431 measures the following functions simultaneously:
* The maximum values will restart on making new measurements.
The STRUCTURE application is designed to evaluate the effect of vibrations on the structure
of buildings and terrain, both for short-lasting and stationary vibrations.
The evaluation consists of determining the peak value of the components of the vibration
speed vector and the frequencies at which they take place.
v
pkx
Peak value of the speed vector on the x axis
v
pky
Peak value of the speed vector on the y axis
v
pkz
Peak value of the speed vector on the z axis
f
x
Frequency at which the
v
pkx
value takes place
f
y
Frequency at which the
v
pky
value takes place
f
z
Frequency at which the
v
pkz
value takes place
a
mx
RMS value of acceleration on the x axis with W
m
weighting
a
my
RMS value of acceleration on the y axis with W
m
weighting
a
mz
RMS value of acceleration on the z axis with W
m
weighting
a
mz
Total combined acceleration value (vector)
MTVV
x
MTVV value of acceleration on the x axis with W
m
weighting
MTVV
y
MTVV value of acceleration on the y axis with W
m
weighting
MTVV
z
MTVV value of acceleration on the z axis with W
m
weighting
MTVV
MTVV value of acceleration with W
m
weighting
MTVV
v
Maximum total combined MTVV acceleration value (vector) with W
m
weighting