METHOD OF TRACKING A CONTAINER USING MICRORADIOS
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Abstract
A microradio is provided with a hysteretic switch to permit an optimum range increasing charging cycle, with the charging cycle being long relative to the transmit cycle. Secondly, an ensemble of microradios permits an n2 power enhancement to increase range with coherent operation. Various multi-frequency techniques are used both for parasitic powering and to isolate powering and transmit cycles. Applications for microradios and specifically for ensembles of microradios include authentication, tracking, fluid flow sensing, identification, terrain surveillance including crop health sensing and detection of improvised explosive devices, biohazard and containment breach detection, and biomedical applications including the use of microradios attached to molecular tags to destroy tagged cells when the microradios are activated. Microradio deployment includes the use of paints or other coatings containing microradios, greases and aerosols. Moreover, specialized antennas, including microcoils, mini dipoles, and staircase coiled structures are disclosed, with the use of nano-devices further reducing the size of the microradios.
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Citations
116 Claims
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1. -80. (canceled)
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81. A method of tracking a container, comprising the steps of:
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providing an ensemble of microradios on the surface of the container; parasitically powering the microradios; detecting the emissions from the parasitically powered microradios; and
,determining the position of the container based on the detected emissions from the microradios. - View Dependent Claims (82, 100, 101, 102, 103, 104, 105, 106, 107)
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83. -94. (canceled)
- 95. A method for tracking metal objects comprising the step of attaching a microradio to a metal object and then monitoring positions of said metal object.
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96. -99. (canceled)
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108. A container tracking system comprising:
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an ensemble of parasitically powered microradios disposed on the surface of a container and configured to transmit tracking data; and a detection device configured to receive the tracking data transmitted from the ensemble of microradios in order to determine the location of the container. - View Dependent Claims (109, 110, 111, 112, 113, 114, 115)
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Specification