A novel approach, based on hybrid nanostructure gas sensors, to correlate metrics related to specific medical conditions to a signature created by the sensor's response to the Volatile Organic Compounds (VOCs) contained in human breath.

Methods, systems, and apparatus for a camera-enhanced multi-modal gas sensing apparatus including a camera configured to capture imaging data including at least a portion of a test environment including the gas sensing apparatus and an object of interest within the field of view of the camera, multiple gas sensors including a first type of gas sensor and a second type of gas sensor different from the first type of gas sensor which are each sensitive to a respective set of analytes, a housing configured to hold the multiple gas sensors, a gas inlet coupled to the housing and configured to expose the multiple gas sensors to a gas introduced from the test environment via the gas inlet, and a data processing apparatus in data communication with the multiple gas sensors and the camera.

In a multi-channel resistance-based gas sensor system, the multi-channel array includes gas sensor channels respectively connected to resistive type gas sensors. The pre-processing unit selects one of a current mode, a resistance mode, and an external resistance mode, analyzes a sensing value obtained from any one of the gas sensor channels based on the selected mode and outputs a voltage value corresponding thereto. The ADC converts the voltage value to digital data. The control unit controls the pre-processing unit to execute one of the current mode for analyzing a sensing value smaller than or equal to a preset first resistance value, the external resistance mode for analyzing a sensing value greater than or equal to a preset second resistance value greater than the preset first resistance value and the resistance mode for analyzing a sensing value between the preset resistance first value and the preset second resistance value.

A particle detecting module is disclosed and includes a main body, which is consist of an air guiding part and a detecting part, by driving a plurality of heating elements disposed within a plurality of storage chambers of the air guiding part, air inside these storage chambers is heated and the moisture of the air is removed, and then the air is transported to the detecting part, so that a sensor of the detecting part could detect the sizes and the concentrations of the suspended particles, and the interference of the humidity is reduced.

A fire detection system includes: a transmitter to output a first optical signal including a wavelength absorbed by a first gas generated in an early stage of a fire and a second optical signal including a wavelength absorbed by a second gas having an amount of generation being increased as the fire progresses; and a receiver including a detector to receive the first optical signal and the second optical signal propagating through a measuring target space, a first gas concentration calculator to calculate a concentration of the first gas, a second gas concentration calculator to calculate a concentration of the second gas, a smoke concentration calculator to calculate a smoke concentration, and a determination unit to determine progress of the fire, based on the concentration of the first gas, the concentration of the second gas, the smoke concentration, and an environmental temperature.

Embodiments relate generally to methods and systems for sensing and communicating characteristics of a work environment. A communication system may comprise one or more of the following one or more low cost sensor unit (LCSU) configured to detect one or more characteristics of the environment; one or more portable gas detector configured to be carried by a worker in the work environment, and comprising at least one sensor element, a display, and a wireless communication module; and one or more mobile device to be carried by a worker in the work environment, and comprising a display and a wireless communication module, wherein at least one of the portable gas detector and the mobile device is configured to receive sensed data from the one or more low cost sensor unit, process the received sensed data, and display the received sensed data to the worker.

A gas measuring apparatus (100), including: a gas collecting device (102), including two gas entrapping compartments (1021, 1022); a fixing frame (103), which is rotatably connected with the gas collecting device (102); positioning holders (104, 105), each of which is located below a corresponding one of the two gas entrapping compartments (1021, 1022) and is configured to limit the rotation angle of the gas collecting device (102) by colliding with an edge of the corresponding one of the gas entrapping compartments (1021, 1022); a chamber (101), which accommodates the gas collecting device (102), the fixing frame (103), the positioning holders (104, 105) and a liquid medium; and a gas inlet (106), which is located below the gas collecting device (102). The apparatus (100) solves the problem of relatively low accuracy of measurement results.

The invention relates to a method for the identification of an analyte in a sample fluid. The method comprises the performance of a set of measurements on at least two sensors of different types. Sensors of different types may comprise Gas Chromatography sensors, CMOS gas sensors, a combination thereof, or more generally sensors in which it is possible to control a first physical parameter and measure, for different values of the first parameter, a second physical parameter representative of at least a concentration of the analyte. The method comprises the detection of maxima of the second parameter, the access to databases in order to find reference values of the first parameters in which maxima are found, and the comparison of values at which maxima are found and reference values, on the two sensors.

A sensor module comprises a master sensor unit for sensing a first environmental parameter, a slave sensor unit for sensing a second environmental parameter, a common substrate on which the master sensor unit and the slave sensor unit are mounted, and a digital bus interface for a communication between the master sensor unit and the slave sensor unit. The master sensor unit comprises a non-volatile memory for storing calibration data and configuration data of the master sensor unit and the slave sensor unit. The master sensor unit is embodied as a first chip, and the slave sensor unit is embodied as a second chip. Such sensor module is compact, robust and versatile.

Embodiments in accordance with the present disclosure are directed to methods and apparatuses used for extracting heavy rare gas. An example method includes passing inlet air through an airflow path of an apparatus, removing carbon dioxide and gaseous water from the inlet air, and cooling the inlet air to a threshold temperature while passing along the airflow path. The method further includes passing the cooled inlet air through an adsorption chamber of the apparatus to adsorb heavy rare gas from the cooled inlet air while the cooled inlet air is in a gaseous state, and extracting the heavy rare gas from the adsorption chamber.