Gas detection methods, systems, and devices. The gas detection device includes a housing portion configured with at least one gas sensor, one or more processors executing instructions stored on memory to process data from the at least one gas sensor, and a communication device configured to transmit a signal regarding the processed data. The gas detection device further includes a connection component to operably position the housing portion with respect to a structure to enable the at least one gas sensor to detect a gas emitting from the structure.

A management system includes a processor system in operative connection with a communication system. The communication system is configured to be in communicative connection with a gas monitoring system of an entity. The gas monitoring system further includes one or more portable gas detection instruments which include one or more gas sensors and a rechargeable battery system. The gas monitoring system further includes one or more chargers configured to charge the rechargeable battery system of each of the portable gas detection instruments. The management system further includes a memory system in operative connection with the processor system. The memory system includes an algorithm executable by the processor system stored therein and a database associated with the algorithm stored therein, which includes data identifying each of the chargers as an asset of the entity and each of the portable gas detection instruments as an asset of the entity.

A gas-concentration detector system incorporates a temperature sensor, a humidity sensor, and a gas-concentration detector the accuracy of which deviates as a function of temperature and humidity. Contemporaneous, real-time values of temperature, humidity, and gas concentration of a gas of interest are registered and communicated to a data processing system including a computer memory and a computer processor. Value-deviation data reflective of the degree to which the accuracy of the gas-concentration sensor deviates as a function of temperature and humidity are predetermined and stored in the computer memory. Provided with real-time gas-concentration, temperature, and humidity values, the computer processor executes a value-reconciling algorithm which, based on consultation with the stored value-deviation data, calculates and outputs a refined gas-concentration value more is accurately representative of the actual gas-concentration value within the selected environment in which gas-concentration detection and reporting is desired.

A system and method for remote calibration of an air-quality sensor device. The method includes receiving sensor data from at least one sensor device; analyzing the received sensor data to identify at least statistically-significant values indicating on at least drift from initial calibrated values of each of the at least one sensor device; for each identified drifted sensor device, computing re-calibration updates, wherein the re-calibration updates adjust the initial calibrated values such that readings of the respective drifted sensor device fall within a range of expected values; and transmitting the re-calibration updates to the respective drifted sensor device, wherein the respective drifted sensor device upon receiving the re-calibration updates is configured to update its calibration parameters.

According to an embodiment, a sensor arrangement comprises a first micropump, e.g. a microfluidic or peristaltic pump, having a normally closed (NC) safety valve, e.g. at the micropump output, a second micropump, e.g. microfluidic or peristaltic pump, having a normally closed (NC) safety valve, e.g. at the micropump output, and a sensor having a sensor chamber, e.g. a sensor cavity or sensor volume, with a sensor element, e.g. an active sensitive region or layer, in the sensor chamber, wherein the sensor is configured to provide a sensor output signal based on a condition of the fluid, e.g. a gas or liquid, in the sensor chamber. The sensor chamber of the sensor is fluidically coupled between the first and second micropump, and the first and second micropump are configured to provide a defined operation mode of the sensor arrangement based on the respective activation or operation condition of the first and second micropump for providing (1.) a defined negative fluid pressure in the sensor chamber, (2.) a defined positive fluid pressure in the sensor chamber or (3.) a defined fluid flow, e.g. fluid throughput, through the sensor chamber.

An aircraft air quality testing system includes a portable housing unit to be removably placed within an aircraft; an air testing unit secured inside the portable housing unit and including: a sensor to receive an air sample during a plurality of oxygen generation system cycles and engine thrust settings of the aircraft; a removable collection media to receive the air sample from the sensor and filter targeted chemicals from the air sample; and a plurality of analyzers to perform a real-time chemical analysis of the air sample and the filtered targeted chemicals. A first computer is operatively connected to the portable housing unit and includes: a processor to receive the real-time chemical analysis and generate real-time chemical analysis and flow rate data; a memory device to store the real-time chemical analysis and flow rate data; and a display device operatively connected to the portable housing unit.

Systems and methods to trustlessly provide resource consumption and/or pollution emission readings at cooperating industrial, commercial, or consumer locations, including mechanisms for trustless blockchain-based verification by third parties by employing a measure-perturb-measure sensor validation cycle, and to safe guard both the privacy and value of collected data during an adjustable pre-determined lifecycle.

A MEMS gas sensor (A), array thereof, and preparation method therefor. The MEMS gas sensor comprises a first substrate (A2) provided with a first cavity (A1), and N gas detection assemblies (A3) provided at an opening of A1, each A3 comprises: a supporting arm (A31) and a gas detection part (A32) provided on the A31; the A32 comprises a strip-shaped heating electrode part (A321), an insulating layer (A322), a strip-shaped detection electrode part (A323), and a gas-sensitive material part (A324) that are stacked sequentially; the A323 comprises a first detection electrode part (A323-1) and a second detection electrode part (A323-2) with a first opening (A325) therebetween; the A324 is provided at the A325; a first end of the A324 is connected to the A323-1, a second end of the A324 is connected to the A323-2; strip-shaped heating electrode parts in each A3 are connected sequentially to form a heater (A8).

The biological information measurement system of the present invention includes a test subject-side device provided in a toilet installation room, and a server communicable with the test subject-side device, the test subject-side device includes a sulfur-containing gas sensor sensitive to sulfur-containing gas and outputting detection data, a transmitter-receiver transmitting measurement data including detection data of the sulfur-containing gas detected by the sulfur-containing gas sensor to the server, and the server includes a database in which measurement data including detection data of sulfur-containing gas detected by the sulfur-containing gas sensor is accumulated and recorded with dates and times of defecation acts by being associated with test subject identification information, and server-side data analyzer that analyzes physical condition of a test subject on the basis of a time-dependent variation tendency of the measurement data accumulated and recorded in the database.

An embodiment moving object includes a body, a driving unit, an odor sensing module disposed in the body and including a plurality of gas sensors, and a control unit configured to determine an odor using an output value of each of the gas sensors, determine a movement direction based on a change in concentration of the odor, and control the driving unit to move the body in the determined movement direction.