NAL RESEARCH CORPORATION 9602-LP, Руководство пользователя

Страница: 22 / 61

9602-LP User Guide Version A
Document Number: 451-92750-001A 22 of 61
Figure 10: Normal Tracking “Callable (No)” Option
When you select the “Callable (No)” option (see Figure 10 ) and select the Awake on Motion
option (see Figure 11 ), the 9602-LP can be triggered by an internal motion sensor to send
a GPS report. The 9602-LP has a built-in motion sensor that works regardless of how the
9602-LP is mounted or aligned. It is sensitive both to tilt (static acceleration) and vibration
(dynamic acceleration). When in motion, the sensor produces continuous on-off contact
closures (a series of TTL-level logic or pulse train) as it chatters open and closed. The signal
level is fed directly into the 9602-LP’s micro-controller. When at rest, it normally settles in a
closed state.
Three parameters must be provided when choosing the Awake on Motion option— Minutes of
Motion Before Waking , Sensitivity , and Motion Sensor Wait (see Figure 11 ) .
 Minutes of Motion Before Waking is a user-defined duration within which valid
motion must exist before the 9602-LP sends a GPS report. For example, a car must
experience continuous motion for three minutes before a GPS report is sent.
Otherwise, a slight bump by a person or by a gust of wind might initiate a report.
The duration of Minutes of Motion Before Waking is divided into one-minute blocks.
 Sensitivity is defined as the number of motion sensor on-off contact closures the
9602-LP must detect in each of the one-minute blocks for motion within that block
to be considered valid motion. All contiguous one-minute blocks must have valid