DEVICE FOR MONITORING AT LEAST A PHYSICAL CHARACTERISTIC OF A BUILDING MATERIAL
1 Assignment
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Accused Products
Abstract
A monitoring device is for monitoring physical characteristics of a building material. The monitoring device is buried inside a block of the building material, and has a sensor to sense physical characteristics thereof. The sensor transmits a signal representative of the physical characteristics.
30 Citations
21 Claims
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1-5. -5. (canceled)
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6. A monitoring device for at least one physical characteristic of a building material, the monitoring device to be buried inside a block of the building material and comprising:
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a sensor configured to sense the at least one physical characteristic and comprising a secondary inductor and a circuit coupled thereto, said circuit configured to generate an internal supply voltage for said sensor when immersed in a variable electromagnetic field and to transmit a signal representative of the physical characteristic; and a wireless power supplier for said sensor configured to generate the variable electromagnetic field and comprising a dielectric layer and a resonant L-C circuit buried therein, said resonant L-C circuit comprising a primary inductor configured to be magnetically coupled to said secondary inductor of said sensor, said wireless power supplier further comprising two current terminals extending from said dielectric layer and being coupleable to an external reading circuit for the signal; said sensor being adjacent said dielectric layer so as to magnetically couple said primary inductor and said secondary inductor. - View Dependent Claims (7, 8, 9, 10)
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11. A monitoring device for a physical characteristic of a building material comprising:
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a sensor to sense the physical characteristic and comprising a circuit configured to generate an internal supply voltage based upon a variable field and to transmit a signal representative of the physical characteristic; and a wireless power supplier for said sensor configured to generate the variable field and comprising a resonant L-C circuit, and external terminals being coupleable to an external reading circuit for the signal. - View Dependent Claims (12, 13, 14)
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15. A method of making a monitoring device for at least one physical characteristic of a building material, the monitoring device to be buried inside a block of the building material and comprising:
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configuring a sensor to sense the at least one physical characteristic, the sensor comprising a secondary inductor and a circuit coupled thereto, and configuring the circuit to generate an internal supply voltage for the sensor when immersed in a variable electromagnetic field and to transmit a signal representative of the physical characteristic; and configuring a wireless power supplier for the sensor to generate a variable electromagnetic field, the wireless power supplier comprising a resonant L-C circuit buried in a dielectric layer, the resonant L-C circuit having a primary inductor configured to be magnetically coupled to the secondary inductor of the sensor, the wireless power supplier further comprising two current terminals extending from the dielectric layer and being coupleable to an external reading circuit for the signal, the sensor being adjacent the dielectric layer so as to magnetically couple the primary inductor and the secondary inductor. - View Dependent Claims (16, 17, 18, 19)
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20. A method of making monitoring device for at least one physical characteristic of a building material comprising:
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configuring a sensor to sense the physical characteristic, the sensor comprising a circuit, and configuring the circuit to generate an internal supply voltage when immersed in a variable field and to transmit a signal representative of the physical characteristic; and configuring a wireless power supplier for said sensor to generate the variable field, the wireless power supplier comprising a resonant L-C circuit, and external terminals being coupleable to an external reading circuit for the signal. - View Dependent Claims (21)
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Specification