GSL-Bench: High Fidelity Gas Source Localization Benchmarking

Gas Source Localization (GSL) is a challenging field of research within the robotics community. Existing methods vary widely and each has its own strengths and weaknesses. Existing GSL evaluations vary in environment size, wind conditions, and gas simulation fidelity, thereby complicating objective comparison between algorithms. They also lack...

Towards Continuous Monitoring of Volatile Organic Compounds in the Gastrointestinal Tract

Much like wearable devices today, ingestible devices have emerged as a promising platform for continuous health monitoring, and potentially even intervention. Recent research has demonstrated the feasibility of ingestible devices with a retention mechanism, enabling them to remain in the stomach for weeks. Equipping these devices with sensors...

Analytical approach to hollow core Photonic Crystal Fiber for gas sensing

Interference of light can be used to determine the concentration of a gas, called gas sensing. The absorption of the light by the gas molecules is measured based on the phase change of the light. In this report, a hollow core photonic crystal fiber is treated. The gas sample is inserted into the hollow core. Photonic crystal fibers possess the...

eNose: An electronic nose for solid stools detection: Software perspective

This report details the software part of the development process of the eNose technology. The technology is posed by Momo Medical. Momo Medical is a start-up company located in Delft, it provides and develops non-intrusive monitoring systems in the nursing sector. The project is the next step in an already existing product: BedSense. BedSense...

Quantification of Aviation's Impact on Air Quality near Schiphol Airport using Low-Cost Gas Sensors

A lowcost multipollutant sensor box is developed, calibrated and deployed to quantify aviationattributable air quality impacts at Amsterdam Schiphol airport. The sensor box contains four lowcost electrochemical gas sensors that respond to CO, NO, NO2 and O3 concentrations in ambient air. Additional sensors in the sensor box allow the...

Metal sulfides for gas sensing applications: devices and mechanisms

Nanostructured materials have attracted more and more attention in the applications of gas sensing due to their high specific surface area, numerous surface-active sites, as well as the effect of crystal facets with high surface reactivity. These kinds of gas sensors are mainly used for detecting air quality, environment situation, and breath...

Acoustic design and scaling aspects of a photoacoustic sensor system for combustible gases

Nowadays most of the energy needed comes from fossil fuels such as natural gas (NG). Dwindling stocks of all fossil fuels, including locally occurring natural gas reservoirs, have spurred the effort to both decrease dependence on local fuels and switch to renewable, green energy. The drawback to gas sources like Subsitute Natural Gas (SNG),...