Methods, apparatuses and systems for providing gas-sensitive substrates are disclosed herein. An example apparatus may comprise: a gas-sensitive substrate at least partially disposed within a gas flow channel of the gas detecting apparatus, wherein at least a portion of the gas-sensitive substrate is treated to mimic stain characteristics produced by at least one interferent gaseous substance, and the gas-sensitive substrate is configured to produce a stain in response to making contact with at least one target gaseous substance disposed within the gas flow channel.

A system and method for measuring a parameter level is provided. The system including an electricity meter, the meter having an electricity measurement sensor having a source side and a load side. A socket and a collar are provided. The collar being electrically connected between the socket and the electricity meter, the collar having at least one first connector for a first phase of electricity and at least one second connector for a second phase of electricity, the first connector and second connector being electrically coupled to the load side, and a sensor electrically connected to at least one of the at least one first connector and the at least one second connector.

A reduction device includes a housing defining an input chamber configured to receive exhaust from a power source, an output chamber, an exhaust channel configured to direct the exhaust from the input chamber to the output chamber, and a longitudinal axis. The reduction device also includes a treatment unit disposed in the exhaust channel and along the longitudinal axis. The treatment unit is configured to at least partly remove pollutant species from the exhaust. The reduction device also includes an attenuation component disposed in the housing and radially outward of the treatment unit. The attenuation component is fluidly connected to the exhaust channel, and is configured to attenuate a range of frequencies corresponding to operation of the power source. Additionally, the exhaust channel prohibits exhaust entering the input chamber from exiting the housing without passing through the treatment unit.

A process and a system for monitoring at least one concentration of a gas in a monitored area includes generating data by a mobile gas measuring device (3a), whose position in the monitored area is determined or is known and transmitting the data directly or indirectly to a central data processing unit (1). The data are compared with at least one limit value, and an information signal is outputted by the at least one mobile gas measuring device and/or by the central data processing unit in case of an undershooting or overshooting of the limit value. The monitored area is divided into at least two zones (8) and zone-specific parameters are assigned to the zones. A functionality of the mobile gas measuring device is set and/or changed based on the current position of the gas measuring device and based on at least one of the zone-specific parameters.

A system includes a gas detector to detect a gas leak and notify a gas meter of a gas level of the gas leak. The gas meter receives the notification about the gas leak from the gas detector, and compares the gas level detected by the gas detector with a threshold level. The gas meter determines if the detected gas level is greater than the threshold level to determine whether to turn off a gas valve due to the detected gas level. The system also includes a head end system configured to receive notification of the detected gas level and status of the gas valve from the gas meter.

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.

Disclosed is an apparatus for measuring air quality, the apparatus comprises a first sensor circuit; a second sensor circuit; a third sensor circuit; a communication circuit configured to communicate with an external server; a display; a processor; and a memory, wherein the memory stores instructions that, when executed, cause the processor to: detect air quality related information by using the first sensor circuit, obtain at least one of movement information detected by using the second sensor circuit or adjacent environment information detected by using the third sensor circuit while the air quality related information is detected, determine validity of the air quality related information from using the first sensor circuit based on the adjacent environment information or the movement information, display the air quality related information from using the first sensor circuit or air quality related information received from the external server based on the determined validity.

A battery management system configured to detect impending failure of a lithium-ion battery cell includes a sensor array microchip. The microchip includes a plurality of silicon chemical-sensitive field effect transistors (CS-FETs) configured to detect multiple distinct gases vented by the lithium-ion battery cell. The battery management system also includes a cell monitoring unit (CMU) configured to receive from at least one of the CS-FETs data indicative of a detected amount of gas vented by the lithium-ion battery cell. The CMU is also configured to compare the data indicative of the detected amount of the vented gas to a predetermined threshold amount of the subject vented gas programmed into the CMU. The CMU is further configured to trigger a signal indicative of impending failure of the lithium-ion battery cell when the detected amount of the vented gas exceeds the predetermined threshold amount of the subject vented gas.

An engine assembly includes an internal combustion engine and a carbon monoxide (CO) sensor unit. The CO sensor unit includes a CO sensor controller including a CO sensing circuit configured to detect a level of CO and a shutdown circuit. The shutdown circuit is configured to receive a detected level of CO and calculate a trailing window average of the detected level of CO. The trailing window average includes an average of the detected level of CO over a predetermined sampling window. The shutdown circuit is further configured to determine whether to initiate a shutdown of the internal combustion engine based on at least the calculated trailing window average and a predetermined trailing window average threshold and initiate the shutdown of the internal combustion engine based on determining that the trailing window average exceeds the predetermined trailing window average threshold.

Systems and methods notify detection of vaping, smoking, or potential bullying. A notification system for notifying detection of vaping, smoking, and potential bullying includes: an air quality sensor configured to detect air quality; a sound detector configured to detect sounds; a processor configured to identify an abnormality matching signature of vaping, smoking, or potential bullying based on at least one of the detected air quality or the detected sounds; an alert device configured to provide at least one of an audio alert or a visual alert based on the identified abnormality matching signature; and a pair of communication interfaces configured to communicatively couple the processor and the alert device.