Patent ID: 9020527
Filing Date: 2015-04-28
Classification: G01S,G06Q,H04W

Abstract:
1. An RF tracking system comprising: a transmitter comprising a power source, a GPS positioning element, a motion sensor, a two-way wireless RF communication module, a timer and control circuitry; and a receiver; the transmitter configured to send data regarding the location of the transmitter to the receiver, and the receiver configured to receive the data from the transmitter; the transmitter having a first sleep state, an idle state, a ping state, a second sleep state, and a transit state, wherein: from the first sleep state, the transmitter will switch to the idle state if a first time period T1 has passed or if movement of the transmitter is detected by the motion sensor; if movement is detected and a second time period T2 has not expired, the transmitter will switch to the ping state, send data regarding the location of the transmitter, and then return to the idle state; if movement is detected and the second time period T2 has expired, if a sequence of at least N1 movement is detected within a third time period T3, the transmitter will switch to the transit state and then to the second sleep state; when in the second sleep state, the transmitter will check for continued movement; if movement is detected the transmitter will remain in the second sleep state, and if no movement is detected within a fourth time period T4, the transmitter will switch to the ping state, send data regarding the location of the transmitter, and then return to the idle state.