A gas detecting device includes a casing, at least one gas transporting actuator, at least one valve and at least one external sensor. The casing has an airflow chamber, an inlet, a branch channel and a connection channel. The airflow chamber communicates with the exterior of the casing through the inlet, and the branch channel communicates with the airflow chamber and the connection channel. The gas transporting actuator is disposed within the branch channel for transporting air into the airflow chamber and the branch channel from the inlet. The valve is disposed between the connection channel and the branch channel for controlling the air to flow into the connection channel. The external sensor is detachably disposed within the connection channel and has a sensor for measuring the air in the connection channel.

An electronic device has a DC/DC boost converter that includes a power NFET. The power NFET is coupled between a first pin, which can be coupled to a battery through an inductor, and a second pin that can be coupled to a ground plane. A switch-node is coupled to a third pin, which can be coupled to a diode to provide a boosted output voltage. A gate driver can receive a FET-on signal and drive a gate of the power NFET. A digital logic circuit provides the FET-on signal and includes an Ipeak gear-shifting circuit that dynamically changes the value of a peak inductor current responsive to one or more determinations that are related to one of the boosted output voltage and a switching frequency of the DC/DC boost converter.

A combined automatic dependent surveillance broadcast (ADS-B) and carbon monoxide (CO) detecting device includes an ADS-B circuitry configured to receive an ADS-B transmission, a CO sensor configured to obtain a CO reading for ambient air in an aircraft cabin, a processor configured to generate a data stream combining the ADS-B transmission and the CO reading, and a wireless communication circuitry configured to provide the data stream to at least one aircraft crew computing device.

A gas monitoring and alarm system comprises a master monitor and at least one remote monitor. The master monitor is coupled to a master sensor that senses a concentration of a gas in a first area and sends data to the master monitor. The at least one remote monitor is communicatively coupled to the master monitor. The least one remote monitor is coupled to a remote sensor, which senses a concentration of gas in a second area. The at least one remote monitor receives data about the concentration of the gas in the second area from the remote sensor, and sends the data to the master monitor. The master monitor receives the data and triggers a first alarm status when the concentration of gas in at least one of the first area and the second area exceeds a first predefined alarm threshold.

The vehicular carbon monoxide and volatile organic compounds alarm is configured for use with a vehicle. The vehicle is further defined with a passenger space. The vehicular carbon monoxide and volatile organic compounds alarm is maintained in the passenger space of the vehicle. The vehicular carbon monoxide and volatile organic compounds alarm is a sensor. The vehicular carbon monoxide and volatile organic compounds alarm monitors the concentration of carbon monoxide and volatile organic compounds in the air in the passenger space of the vehicle. The vehicular carbon monoxide and volatile organic compounds alarm generates a visible and audible alarm when the concentration of carbon monoxide and volatile organic compounds in the passenger space of the vehicle exceeds a predetermined level. The vehicular carbon monoxide and volatile organic compounds alarm comprises an operating circuit and a housing. The housing contains the operating circuit.

Various methods and systems are provided for determining a quality of a medical gas flow. In one example, a method for a medical gas quality monitoring system includes obtaining measurements of a medical gas via a plurality of sensors, the plurality of sensors including at least one of a humidity sensor, a particulate matter sensor, a carbon dioxide sensor, and a total volatile organic compound (tVOC) sensor, determining a gas quality index of the medical gas based on the obtained measurements, and outputting the determined gas quality index.

A gas detection device comprises a pump module for drawing in air; a sensor module including a plurality of unit sensors detecting a gas included in the air; a driving module driving the pump module and the sensor module; and a case including a main body mounted to allow at least one among the pump module, the sensor module, and the driving module to be detachable and a cover connected to the main body to allow the at least one among the pump module, the sensor module, and the driving module to be exposed.

A notification system for notifying detection of vaping, smoking, or potential bullying at a premises includes a plurality of sensors, each being configured to sense air quality, sound, and temperature at the premises, a memory configured to store a responsibility schedule, and positional information and base data for each of the plurality of sensors, a controller configured to determine detection of vaping, smoking, or potential bullying by comparing results sensed by the plurality of sensors with the base data, and a message server configured to send an alert to a person based on the responsibility schedule, a detection location, and a detection time. The person is responsible at the detection location and at the detection time based on the responsibility schedule.

A wearable electronic device and method are disclosed, including a display, a biometric sensor, a communication circuitry, and a processor. The processor implements the method, including: receiving a transmission including air quality information from an external electronic device equipped with a gas sensor, detecting, via a biometric sensor, biometric information of a user, identifying, via at least one processor, a dangerous situation based at least partly on the air quality information and the biometric information, and displaying a notification message indicating the identified dangerous situation through at least one of a display of the wearable electronic device, or the external electronic device, based on the identification of the dangerous situation.

Disclosed are an integrated management method and system for a kitchen environment using artificial intelligence. The integrated management system for the kitchen environment includes: a range hood placed above a cooking appliance including a heater, the range hood including a sensor that measures information on an atmosphere environment changed due to an operation of the cooking appliance; a server determining whether to execute a kitchen environment management mode, on the basis of a result of measurement by the sensor; and multiple environment appliances registered in a user account and cooperating over a network, each of the multiple environment appliance receiving a control command corresponding to the kitchen environment management mode from the server, and operating according to the control command.