Inductive Signature Technologies, Inc.

The United States of America as Represented by the United States

Martin Marietta Energy Systems, Inc.

Michael J Roberts

Steven R Hilliard

Geoffrey Yerem

Robert L Shepard

Theron V Blalock

Lonnie Curt Maxey

An apparatus for measuring the inductance of a wire-loop with noise-cancellation, auto-calibration and wireless communication features, or detector circuit. The apparatus measures the effective change in inductance induced in a wire-loop as a vehicle passes over the wire-loop to produce an inductive signature corresponding to a vehicle.

Inductive signature measurement circuit

A dual-mode Johnson noise and DC resistance thermometer capable of use in control systems where prompt indications of temperature changes and long term accuracy are needed. A resistance-inductance-capacitance (RLC) tuned circuit produces a continuous voltage signal for Johnson noise temperature measurement. The RLC circuit provides a mean-squared noise voltage that depends only on the capacitance used and the temperature of the sensor. The sensor has four leads for simultaneous coupling to a noise signal processor and to a DC resistance signal processor.

Dual-mode self-validating resistance/Johnson noise thermometer system

Method and device for direct, non-contact temperature measure of a body. A laser beam is reflected from the surface of the body and detected along with the Planck radiation. The detected signal is analyzed using signal correlation technique to generate an output signal proportional to the Johnson noise introduced into the reflected laser beam as a direct measure of the absolute temperature of the body.

Optical Johnson noise thermometry

Growing community of inventors

Knoxville, TN, United States of America

Michael J Roberts