Intelligent tracking system and methods and systems therefor
AssigneeCulvert-Iot Corporation
InventorsDean Mamoru Kawaguchi, Alberto Vidal, Edward John Boling, Prasad Panchalan, Edward Maurice Farrell
Life of this patent
Estimating the term…
Abstract
An intelligent tracking system generally includes one or more tracking devices, some of which may be passive tracking devices. Each passive tracking device includes one or more transceivers and is energized by an energizing signal. Some of these passive tracking devices may operate in a first communication mode or a second communication mode based on the energizing signal. Some tracking devices may include encryption modules or authentication modules. Some of these devices may incorporate a bulk acoustic wave oscillator.
Claims30
A passive tracking device comprising:
- a first antenna that transmits first response signals in a first frequency band;
- a second antenna that receives first energizing signals in a second frequency band;
- a third antenna that both transmits second response signals and receives second energizing signals in a third frequency band;
- an energy harvesting module that receives an energizing signal from a remote device via the second antenna and/or the third antenna, and converts the energizing signal from RF electrical energy to DC electrical energy that energizes the passive tracking device;
- a first transmission module that modulates a first response signal for transmission in the first frequency band and outputs the modulated first response signal to the first antenna for transmission when the passive tracking device operates in a first mode in accordance with a first communication protocol, wherein the first response signal includes a first message indicating a first device identifier of the passive tracking device;
- a second transmission module that prepares a second response signal for transmission in the third frequency band and facilitates transmission of the prepared second response signals by toggling impedance of the third antenna when the passive tracking device operates in a second mode in accordance with a second communication protocol, and wherein the second response signal includes a second message indicating a second device identifier of the passive tracking device;
- and
- a mode selection module that determines whether the passive tracking device is to operate in the first mode or the second mode based on the energizing signal.
Dependencies are inferred from the claim text.