Security and tracking systems including energy harvesting components for providing autonomous electrical power
First Claim
1. A security system, comprising:
- an energy harvesting element arranged on a body structure;
a sensor device powered by electrical energy generated by the energy harvesting element, the sensor device generating a sensor output signal according to a sensed parameter measured by the sensor device; and
an energy transmissive layer arranged over the energy harvesting element on the body structure and arranged over the sensor device, the energy transmissive layer having a body-facing side facing a surface of the body structure, and an energy-incident side opposite the body-facing side,the energy-incident side presenting an opaque appearance when viewed from substantially any aspect on the energy incident side, andthe energy transmissive layer passing 50% or more of light energy impinging on the energy transmissive layer through the energy transmissive layer to activate the energy harvesting element.
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Abstract
A security system is provided that integrates a unique set of structural features for concealing self-powered sensor and communication devices in aesthetically neutral, or camouflaged, packages that include energy harvesting systems that provide autonomous electrical power to sensors, data processing and wireless communication components in the portable, self-contained packages. Color-matched, image-matched and/or texture-matched optical layers are formed over energy harvesting components, including photovoltaic energy collecting components. Optical layers are tuned to scatter selectable wavelengths of electromagnetic energy back in an incident direction while allowing remaining wavelengths of electromagnetic energy to pass through the layers to the energy collecting components below. The layers uniquely implement optical light scattering techniques to make the layers appear opaque when observed from a light incident side, while allowing at least 50%, and as much as 80+%, of the energy impinging on the energy or incident side to pass through the layer.
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Citations
20 Claims
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1. A security system, comprising:
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an energy harvesting element arranged on a body structure; a sensor device powered by electrical energy generated by the energy harvesting element, the sensor device generating a sensor output signal according to a sensed parameter measured by the sensor device; and an energy transmissive layer arranged over the energy harvesting element on the body structure and arranged over the sensor device, the energy transmissive layer having a body-facing side facing a surface of the body structure, and an energy-incident side opposite the body-facing side, the energy-incident side presenting an opaque appearance when viewed from substantially any aspect on the energy incident side, and the energy transmissive layer passing 50% or more of light energy impinging on the energy transmissive layer through the energy transmissive layer to activate the energy harvesting element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification