In the communication experiments, multiple acceleration
data segments are obtained for the bridge deck and stay cable;
and multiple data communication trials were performed for
each data segment. Figure 7 shows the mean and standard
deviation of the inflated K using 10 data segments each for
both deck and cable. Clearly, the LEC method achieves high
compression for all segments in the experiments. It can be
further seen that the LEC compression ratio ( K
500 ) is smaller
for deck accelerations than for the cable accelerations. This
fact is attributed to the lower vibration level of the deck that
makes its differential signal more clustered to small values
(see Figure 5(c), 6(c)). In Figure 8, twelve data segments, six
from the deck and six from the cable each, are associated
with their observed data loss patterns in the experiments.
The black squares indicate the inflated K for each of the
segments, whereas the circles indicate the received M in
each communication trials. The only reconstruction failure is
marked in red, which is clearly attributed to the excessive data
loss that causes M to drop below K. All other cases yield
lossless recovery of the original sensor data
In the communication experiments, multiple acceleration
data segments are obtained for the bridge deck and stay cable;
and multiple data communication trials were performed for
each data segment. Figure 7 shows the mean and standard
deviation of the inflated K using 10 data segments each for
both deck and cable. Clearly, the LEC method achieves high
compression for all segments in the experiments. It can be
further seen that the LEC compression ratio ( K
500 ) is smaller
for deck accelerations than for the cable accelerations. This
fact is attributed to the lower vibration level of the deck that
makes its differential signal more clustered to small values
(see Figure 5(c), 6(c)). In Figure 8, twelve data segments, six
from the deck and six from the cable each, are associated
with their observed data loss patterns in the experiments.
The black squares indicate the inflated K for each of the
segments, whereas the circles indicate the received M in
each communication trials. The only reconstruction failure is
marked in red, which is clearly attributed to the excessive data
loss that causes M to drop below K. All other cases yield
lossless recovery of the original sensor data
การแปล กรุณารอสักครู่..
