Sensors

This dataset consists of room impulse responses from a waste container recorded at different fill levels. The data were captured (Mic.: MAX4466) with a length of 4096 samples at a sampling rate of 10 kHz. A sine sweep was utilized between 2048 and 3072 samples. Spectral subtraction preprocessing was applied to enhance the data clarity, utilizing a 1024-sample segment recorded prior to the sine sweep. The calculated RIR begins at sample 3072. Folder names within the dataset correspond to the fill levels of the waste container.

The data was collected by outfitting one of the players with the experimental balloon, which incorporated the embedded circuit and sensors. The sensors positioned at the top-right to the player within the bubble balloon, where a player stand inside. The sensors' data  were collected at specific sampling frequencies (Accelerometer: 1000Hz, Gyroscope: 1000Hz, and Pressure: 40Hz). The experiment was conducted involving five different players. This approach allowed for the inclusion of diverse data samples, taking into account variations in player metrics, movements, and gameplay dynamics.

In this letter, a novel shrinking long period fiber  grating(S-LPFG) is designed. This strain sensor is fabricated through mechanical polishing and arc-discharging, allowing for certain control over its sensitivity to strain. The single-mode fiber(SMF) is first preprocessed into a D-shaped fiber(DSF) through polishing. Then, a periodic melting-induced shrinking is applied to the fiber through arc-discharging modulation. The polishing and shrinking enhance the asymmetry of the single-mode fiber.

This dataset abstract presents findings from a study focused on enhancing surface crack detection in railroad safety through the development and optimization of a hybrid Eddy Current Testing (ECT) probe. Traditional ECT methods often encounter challenges related to 'lift-off noise', which arises from variations in probe-to-material distances. To mitigate this issue, the study introduces a novel probe design that integrates transmit and differential receiver coils, aimed at improving detection sensitivity and minimizing lift-off impact.