Advantech TREK-550, Руководство пользователя

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Figure 6.16
6.6 Dead reckoning
We will need a 3-axis accelerometer that our software can talk to.
We use this to characterize driver behavior such as hard accelerations,
braking, and cornering. This also can tell us other significant information
that can be used in accident reconstruction, etc… This one of the crucial
items that we asked for in our specification and our customers’
expectations are making this a definite must have in our system. We won’t
be needing any dead reckoning functionality at this point in time… this is
something we may want to include in the future but in order to get cost
down we have decided to forgo this at this time. Please confirm that we
will have access to this or another accelerometer.
6.7 G- sensor
We currently, we don’t have documents about G-sensor, but a code
example is ready for customer reference. This code example ONLY
introduces how to access the G-sensor under Windows XP/XPe, but users
must control the G-sensor and develop their SW application by themselves.
Therefore, customer can decide how to set the sensitivity value when to
trigger G-sensor to send signal to CPU and to back end server through
WWAN module. G-sensor is located on the motherboard inside the
TREK-550. Please refer the link
(http://www.analog.com/static/imported-files/data_sheets/ADXL345.pdf) for
the G-sensor datasheet.
TREK-550 User Manual 22