Asset tracking system activated by predetermined pattern of asset movement
An asset tracking system that optimizes the value per ping by tying the ping to a pattern of movements of the asset. The asset tracking device will send a ping to a remote host (i.e., receiver) when pre-determined condition(s) regarding the movement are met, conditions such as the pattern of movement, and number of movements within a time period. In such a manner, the value per ping is optimized, leading to increased battery life and decreased operational cost. To satisfy these conditions, the asset tracking device is equipped with appropriate sensors, actuators, and trigger mechanism(s). The sensors and actuators detect movements and/or confirm or recognize a sequence of movements. When the detected movements and/or sequence of movements match a predetermined, recognized pattern or condition, the trigger mechanism is activated, after which a data ping is sent.
1. A method of tracking an asset with a wireless RF system comprising a receiver and a tracking device comprising a transmitter, the method comprising:
with the transmitter in a sleep state, monitoring for an environmental change with the tracking device, the environmental change being a movement or a change in location, altitude, or temperature;
when the tracking device detects at least two environmental changes that are either a recognized pattern of changes or meet a predetermined time between environmental changes, the transmitter switching to an idle state; and
when in the idle state, if a subsequent environmental change is above a predetermined value within a time period T:
(a) the transmitter switching to a ping state,
(b) sending data to the receiver from the transmitter in the ping state regarding the location of the tracking device, and
(c) after sending the data, the transmitter returning to the idle state;
after the transmitter returning to the idle state, monitoring for at least two additional environmental changes that are either a second recognized pattern of changes or meet a second predetermined time between additional environmental changes, and
when the tracking device detects the at least two additional environmental changes that are either a second recognized pattern of changes or meet a second predetermined time between the additional environmental changes, the transmitter returning to the sleep state.
2. The method of claim 1 wherein the time period T is between 10 and 60 seconds.
3. The method of claim 1 wherein the time period T is between 30 and 120 seconds.
4. The method of claim 1 wherein at least two of the environmental changes are changes in locations, and one of the locations is a repair location.
5. The method of claim 1 wherein at least two of the environmental changes are changes in locations, and one of the locations is a transit location.
6. The method of claim 1 wherein at least two of the environmental changes are changes in locations, and one of the locations is an RF shielded location.
7. The method of claim 1 wherein when the tracking device detects three changes in the environment that are either a recognized pattern of changes or meet a predetermined time between changes, the transmitter switching to an idle state.
8. The method of claim 1 wherein after the transmitter returning to the idle state, monitoring for three additional changes in the environment that are either a recognized pattern of changes or meet a predetermined time between additional changes, and
when the tracking device detects three additional changes in the environment that are either a recognized pattern of changes or meet a predetermined time between the additional changes, the transmitter returning to the sleep state.
9. The method of claim 1 wherein the recognized pattern is a recognized pattern of change in location.
10. The method of claim 9 wherein the recognized pattern of change in location is at a repair center.
11. The method of claim 1 wherein the recognized pattern is a recognized pattern of movement.
12. The method of claim 11 wherein the recognized pattern of movement is a loading sequence.