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Smart GPS is an optional feature used to increase your GPS modules' battery longevity. To understand it you must first understand these concepts.
Successful GPS location attempts normally have a GPS time to fix that is much less than the GPS timeout and that saves battery. Unsuccessful GPS location attempts have a GPS time to fix that equals the GPS timeout thereby draining your battery to the max with no benefit to your data set. Smart GPS reduces the number of unsuccessful GPS location attempts which in turn reduces the number of instances in which the GPS reaches the maximum timeout and that saves battery. If this does not make sense yet, read this section again before moving on. If it does make sense click the How It Works button below for a more detailed explanation of the Smart GPS feature.
As the system user, prior to the deployment of the GPS tracking device, you create a GPS positioning schedule that the device follows, turning the GPS on and off at the times in the day that you have indicated in the schedule. This is typically a schedule that turns the GPS on a few times each day. The GPS hardware is contained on a collar or backpack that also contains an accelerometer. This accelerometer is a sensor that picks up movements. The Smart GPS feature links the GPS positioning schedule to the accelerometer in your animal tracking device.
Stated very simply, if the time arrives at which the schedule has indicated the GPS should turn on to attempt a GPS location, but the accelerometer has not detected movement since the last time the GPS turned on to acquire a location, this new GPS position attempt will be omitted from the schedule thereby saving all of the battery that would have been used to attempt that location.
Let us discuss what we mean by movement. Our user software allows you to declare what constitutes movement as it relates to Smart GPS. Rather than movement we should refer to this as an activity threshold. You set the activity threshold that must be met in order for the GPS device to follow the schedule and turn on when the next scheduled GPS location attempt time arrives. When, during the elapsed time between this scheduled attempt and the previous GPS attempt has not exceeded your activity threshold, the Smart GPS feature is activated. Since there has been no activity that exceeds the threshold, the assumption is that the animal is hunkered down in a burrow or tree or some such and there is no way that the GPS device would be able to acquire satellites in those conditions.
Aside from a higher GPS fix success rate and more data due to longer battery life an additional benefit of Smart GPS is that skipped GPS fixes are indicated with date and time stamps in the data output. This provides you with valuable information about the time and duration of resting periods.
Now let us get technical. There are two settings that determine when Smart GPS is enabled and you set them both. The first is called the Smart GPS threshold. You set this number from 1 to 1000 and it represents a level of movement. The second is called Smart GPS minimum count. You set this number from 1 to 65,534 and it represents the number of instances that movement must exceed the Smart GPS threshold within a particular time frame. The collar has a counter that keeps track of both of these. If these two conditions are exceeded then the collar will act normally but if they are not exceeded Smart GPS will be enabled and the GPS will skip the next scheduled GPS positioning attempt.
Now let us discuss the two failsafes that we built into this feature. You can choose to either enable these or not. You may enable one or the other or neither or both. If you do enable them this is what occurs. First, even when the conditions are met a scheduled GPS position attempt will not be skipped if the last GPS position attempt was unsuccessful. The second failsafe is as follows, enable it and the Smart GPS minimum count is not reset after each scheduled position time. These failsafes help ensure that your GPS will indeed eventually turn on even if the settings were inadvertently programmed too high.
Finally we offer easy set up and testing. Prior to deployment, watch in real time as the movements you make with the collar are represented both graphically and numerically on the screen. You will see how specific movements are detected by the Smart GPS hardware and you use this information to set up movement detection thresholds accordingly. Please click on the Contact Us button at the top of the screen to request a price quote or consultation with us regarding this feature or any of our products.