Eaton Intelligent Power Limited

Carnegie Mellon University

Ii-vi Incorporated

Robert Kerth Davis

Steven Christopher Schmalz

Sandy Omar Jimenez

Richard L Grace

Jason Kohei Arthur Okerman

Joseph Grosholz, Jr

Viatcheslav Vydrin

Kevin B Parnham

An arc fault detection system includes a high frequency detector module structured to detect first spectral content of power having a frequency in a first frequency range, a number of arc fault circuit interrupters each having separable contacts, a low frequency detector module structured to detect second spectral content of power having a frequency in a second frequency range, a control unit structured to control the separable contacts to trip open, and an arc fault detection unit structured to detect an arc fault based on the detected first and second spectral content of the power and to cause the control unit to control the separable contacts to trip open in response to detecting the arc fault. A communication bus provides communication between the high frequency detector and the arc fault circuit interrupters and the first frequency range includes frequencies that are higher than frequencies in the second frequency range.

Arc fault detection system

A gamma ray camera A includes a crystal array S which includes a plurality of pixelseach of which outputs a pixel signal in response to receiving a gamma ray. A first circuit (and) outputs for each pixelof the crystal array S, when a pixel signal output by the pixelhas a predetermined relation to a reference signal, a threshold signal related to the position of the pixelin the crystal array S. A second circuit (and) outputs a counter value for each pixel signal having a predetermined relation to its threshold signal. Lastly, a third circuitaccumulates for each pixelof the crystal array S a count of the counter values output by the second circuit (and) for the pixel

High-speed pulse discriminating gamma ray camera

A device and method for monitoring a subject's eyes. The device includes a light source producing light of a first wavelength and producing light of a second wavelength, and the device includes at least one image sensor positioned to receive light reflected from the subject's eyes. The at least one image sensor produces a first signal indicative of light of the first wavelength and produces a second signal indicative of light of the second wavelength. The device may include a controller connected to the at least one image sensor and receiving the first and second signals. The controller may subtract the first signal from the second signal and produce a third signal indicative thereof. The controller may also provide a synchronization signal to the at least one image sensor and may also provide the signal to other components, such as the light source. One or more filters may be provided in the path of the reflected light so as to filter the light before it reaches the at least one image sensor. One or more lens may also be provided to focus the reflected light before the reflected light reaches the at least one image sensor.

Apparatus and method of monitoring a subject's eyes using two different

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Pittsburgh, PA, United States of America

Robert Kerth Davis