Huemetrix
Co-Founder
North Carolina State University
Professor
Education:
Stanford University 1985 - 1990
Doctorates, Doctor of Philosophy, Engineering, Philosophy
Massachusetts Institute of Technology 1982 - 1983
Master of Science, Masters, Engineering
Massachusetts Institute of Technology 1978 - 1982
Bachelors, Bachelor of Science, Engineering
Skills:
Product Development Product Management Programming Software Development Project Management Software Team Building Software Engineering Control Systems Design Embedded Linux Device Dri
David C. Falk - Raleigh NC Warren J. Jasper - Cary NC
International Classification:
G01B 1102
US Classification:
33707
Abstract:
A fishing line meter optically measures the length of the fishing line. Dye marks are formed on the fishing line at predetermined increments. As the line is cast out or reeled in, the dye marks are detected by the optical sensor. The optical sensor is operatively connected to a circuit which maintains a count indicative of the length of the fishing line. The count is displayed on a LED display.
An optical nutation sensing method and apparatus is provided which is functional at low spin rates and during thruster firings while being relatively insensitive to spacecraft flexures. The advantageous operation of the present invention is afforded by provision of first and second beams of coherent light energy in opposite directions into a coil of optic fiber or other suitable means for restraining the path thereof. The coil lies in a plane normal to the transverse angular momentum vector. The beams are combined at the output ends of the coil in such a way as to create an interference pattern which varies as the satellite nutates. The variation in the interference pattern is detected by photodetector circuitry to provide an output signal representative of the nutation.
Photoelectric Line Measuring Device With Digital Display
David C. Falk - Raleigh NC Warren J. Jasper - Cary NC
International Classification:
G01D 534 G01B 310
US Classification:
25023116
Abstract:
A distance measuring device measures distance by optically measuring the length of a flexible member, such as a line, as it is left off a reel. The line is provided with a plurality of dye marks spaced at predetermined increments. The dye marks are detected by an optical sensor. The optical sensor is operatively connected to a circuit which maintains a count indicative of the length of the line. The count is displayed on an LED display.
Warren J. Jasper - Cary NC David C. Falk - Raleigh NC
International Classification:
D06P 700 B08B 312 D06F 300
US Classification:
8471
Abstract:
A method and apparatus for applying dye marks to a line at predetermined fixed increments. An unmarked line is wound around a roller tube which has a slot formed therein communicating with the interior of the roller tube. A vaporized dye is supplied to the interior of the roller tube and exists through the slot and the roller tube. The disperse dye contacts and penetrates the portion of the line overlying the slot to produce a dye mark on the line at predetermined increments equal to the circumference of the roller tube.
Closed-Loop Textile Dyeing Process Utilizing Real-Time Metered Dosing Of Dyes And Chemicals
Ralph McGregor - Raleigh NC Manpreet Singh Arora - Charlotte NC Warren J. Jasper - Cary NC
Assignee:
North Carolina State University - Raleigh NC
International Classification:
D06P 306
US Classification:
8400
Abstract:
A process for the dyeing of a fibrous article utilizing closed-loop metered dosing of one or more dyes and one or more chemicals that are adjusted in real time as a function of selected monitored parameters of the dyeing bath. The process includes immersing the fibrous article in a heated liquid bath of a solvent medium for the dye wherein the bath has a predetermined pH. Acid is added to the dyeing bath to reduce the pH according to a predetermined profile that is responsive to real-time measurements of dyeing bath pH. Dye is also added to the dyeing bath during dyeing as a liquid concentrate and responsive to real-time calculations of dye uptake by the fibrous article. Dye uptake is calculated periodically by determining in real time during dyeing (1) the solution concentration of the dye in the dyeing bath and (2) the amount of the dye added to the dyeing bath, and then calculating the uptake of dye by the fibrous article therefrom. The dye addition rate during dyeing is adjusted in accordance with the calculated dye uptake by the fibrous article.
Apparatus And Methods For Clearing Smoke Within Closed Environments Using Non-Thermal Microplasmas
A method of generating a non-thermal microplasma, including the steps of providing a fibrous air-filter, arranging one or more pairs of elongated, adjacent, substantially parallel spaced-apart electrodes on the fibrous air-filter, wherein a discharge gap is defined between each pair; placing a component in signal communication with the electrodes for applying a voltage between each pair; and generating a non-thermal microplasma in a corresponding discharge gap and thereby removing one or more combustion byproducts from ambient air.
Apparatus And Methods For Clearing Smoke Within Closed Environments Using Non-Thermal Microplasmas
Apparatus for reducing the translucence or opacity caused by smoke within a closed environment includes a fibrous substrate comprising non-conductive fibers. The apparatus further includes elongated, substantially parallel electrodes disposed on the substrate arranged as one or more pairs of adjacent electrodes, wherein a discharge gap is defined between each pair. The apparatus additionally includes a component configured for applying a voltage between each pair to generate a non-thermal microplasma in a corresponding discharge gap to collect or bind one or more airborne particulate combustion byproducts.