Senquip ORB-X1-G, User Manual

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Position update rate Maximum 1Hz
Horizontal position accuracy Typ-5m (<2.5m CEP-50)
Vertical position accuracy Typ-20m
Horizontal speed accuracy 1km/h
5.4.2 Settings
Measurements can be scheduled as a multiple of the base-interval. The fastest possible measurement rate
is achieved by setting the interval to 1 in which case measurements will occur on every base interval. To
reduce power consumption, the measurement rate can be turned down by increasing the interval. The
GPS is a high power peripheral and so use should be limited when running on battery power.
Figure 5.4. GPS alert parameters
The GPS can create an alert based on position and speed. A known position (expected latitude and expected
longitude) can be specified and if the ORB moves a particular radius from that point, an alert can be raised.
Hysteresis can be specified in 1 meter increments to prevent multiple alerts, for instance as a boat swings
on a mooring near the edge of the allowed radius. Likewise, a maximum speed can be specified and if the
ORB exceeds that speed, an alert will also be raised. Speed hysteresis can be specified in 1km/h incre-
ments, to prevent multiple alerts as the speed fluctuates at the alert point. The time that GPS speed
exceeds 2km/h can counted and be used to calculate machine utilisation.
Note In the example above, the ORB could also report bilge water level, solar battery voltage and a host of
ORB User Guide, Release 1.1
50 Chapter 5. Internal Sensors