The paper describes a general approach for scanning and visualizing panoramic (360◦) indoor scenes. It combines range data acquired by a laser range finder with color pictures acquired by a rotating CCD line camera. The paper describes coordinate systems of both sensors, specifies the fusion of range and color data acquired by both sensors, and reports on three different alternatives for visual...

A single-element, windowless InGaAs photodetector has been calibrated against a cryogenic radiometer using a diode-laser source of wavelength 1296.9 nm (standard uncertainty = 0.4 nm). This source differs from the gas lasers usually used with cryogenic radiometers in that the beam has an elliptical profile, is invisible to the naked eye, is not polarized, and is less spatially coherent. We desc...

This research has succeeded in designing air pressure and altitude measuring instruments based on arduino nano using BME280 sensor. The design of this tool uses the sensor as an input for parameter values ??of altitude. measurement results are displayed organic light emitting diode (OLED), which been processed by Arduino Nano. Sending HC-05 module. Calibrate parameters at Center Meteorology, Cl...

Two systems for the measurement and standardization of peak pulse voltage have recently been developed in the Radio Standards Engineering Division of the National Bureau of Standards. Des igned for use with pulses having durations as short as 10 nanoseconds, the s ystems represent the initi al e ffort by NBS for establishment of standards in this fi eld and it is expected that they will serve a...

We present our third prototype sensor and a localization method for Automated Guided Vehicles (AGVs), for which small imaging LIght Detection and Ranging (LIDAR) and fusion-based localization are fundamentally important. Our small imaging LIDAR, named the Single-Photon Avalanche Diode (SPAD) LIDAR, uses a time-of-flight method and SPAD arrays. A SPAD is a highly sensitive photodetector capable ...

This study examines the accuracy and value of three different PV module performance modeling approaches by calibrating selected performance models to outdoor IV data measured on different module technologies. We compare measured and modeled IV characteristics by examining the error distributions and correlations with time varying quantities to assess the accuracy of each model for the modules t...

This paper reports a technique for measuring the velocity and dissolved oxygen concentration (DOC) fields simultaneously in a micro-scale water flow using oxygensensitive particles (OSP) and a conventional microparticle image velocimetry method. The OSP were fabricated using a dispersion polymerization method by synthesizing platinum (II) octaethyporphyrin (PtOEP) with polystyrene, and used as ...

A simple and inexpensive method for fabricating a microfluidic platform was developed. A printed circuit board (PCB) was used to make a master mold for replicating a polydimethylsiloxane (PDMS) microchannel. The master mold was fabricated by a simple photolithographic method, employing a photoresist dry film. The process did not use hazardous chemicals, a clean room or any expensive instrument....

A simple and compact system was developed for the on-site analysis of lead in environmental water samples. The system consisted of a custom-made blue diode as a light source, a liquid core waveguide (LCW) as spectrophotometric cell and a compact UV-visible spectrometer. It weighed within 1.5 kg in total. Lead was detected using a spectrophotometric indicator reagent (TPPS: 5,10,15,20-tetrapheny...