Nekton Research LLC

Irobot Corporation

Nekton Technologies, Inc.

Mathieu Kemp

Frederick Vosburgh

Charles Anthony Pell

Ryan K Moody

Brett W Hobson

Hugh Charles Crenshaw

Walter Charles Hernandez

Jason A Janet

Jeffrey Krolik

A system for sound cancellation includes a source microphone for detecting sound and a speaker for broadcasting a canceling sound with respect to a cancellation location. A computational module is in communication with the source microphone and the speaker. The computational module is configured to receive a signal from the source microphone, identify a cancellation signal using a predetermined adaptive filtering function responsive to acoustics of the cancellation location, and transmit a cancellation signal to the speaker.

Sound canceling systems and methods

An unmanned underwater vehicle for use in water and with at least one acoustic signal source includes a vehicle body, a steering mechanism to direct the vehicle body through the water, a propulsion device to force the vehicle body through the water, and an adaptive Doppler guidance and control (ADGC) system. The ADGC system is configured to receive acoustic signals from the at least one acoustic signal source and to control the steering mechanism using changes in at least one frequency component of the received acoustic signals caused by Doppler shifts.

Underwater guidance systems, unmanned underwater vehicles and methods

A water submersible communications device for use on a body of water includes a housing and a communications module. The housing has a geometric centroid. The housing is submersible in and floatable on the body of water. The communications module is mounted on and/or in the housing. A center of buoyancy of the communications device is located substantially at the geometric centroid of the housing.

Water submersible communications devices and methods for using the same

Devices for navigating in a fluid medium having a solid boundary include a vehicle body and a fin attached to the vehicle body. The fin is configured to oscillate relative to the body such that interaction between the fin and the fluid medium produces propulsive forces that propel the vehicle body in a desired direction in the fluid medium. The fin is also configured to rotate relative to the body along a transverse axis such that engagement between the fin and the solid boundary propels the vehicle body in a desired direction on the solid boundary.

Amphibious robot devices

Amphibious robot devices and related methods

A self-orienting device comprises: a housing; a sensor mounted to the housing that is sensitive to a signal field and configured to produce a signal responsive to the signal field; a translation-inducing unit associated with the housing; rotation-inducing unit attached to the housing, wherein the translation-inducing unit and the rotation-inducing unit are configured such that the housing travels along a helical trajectory having an axis and is free to rotate about the axis; and a controller operably associated with the sensor for controlling the output of at least one of the translation-inducing unit and the rotation-inducing unit, wherein the controller is configured such that it receives the signal from the sensor and, responsive to the signal, controls the output of at least one of the translation-inducing unit and said rotation-inducing unit. A device so configured can automatically orient to a signal. In this configuration, orientation is robust&mdash;wide variance in the parameters relating &ohgr; to signal intensity are tolerated. In fact, if &ohgr; changes as a function of signal intensity, then orientation to the signal is the only stable outcome. Exemplary signal fields for the device include light, magnetic fields, and gradients of temperature, chemical concentration and depth. The devices can be employed to perform such tasks as locating lost objects, identifying foreign objects, performing transect sampling, guiding munitions, disabling mines, delivering chemical agents, and the like.

Growing community of inventors

Durham, NC, United States of America

Mathieu Kemp