A method for intelligently preventing and handling indoor air pollution is adapted to be implemented in an indoor space and includes providing a cloud processing device to receive and intelligently compare an outdoor gas detection data, an indoor gas detection data, and device gas detection data with each other. Then, the cloud processing device remotely transmits a control signal to the communication relay station and further to an indoor gas exchange system, so that the indoor gas exchange system is capable of intelligently enabling the gas processing device and controlling the operation time of the gas processing device for exchanging a polluted gas in the indoor space with the outdoor gas. Moreover, the gas exchanger can perform purification for the polluted gas at the location of the gas exchanger, thereby allowing the polluted gas in the indoor space to be exchanged into a clean, safe, and breathable gas.

A method of filtering indoor air pollution for filtering air pollutant in an indoor space is disclosed. A plurality of gas processing devices is provided for detecting and filtering air pollutant, and transmitting device inner gas detection data. A connection device is provided for receiving and transmitting the device inner gas detection data to a cloud processing device. The cloud processing device intelligently compares and selects to drive a closest gas processing device to filter the air pollutant and drive the gas processing devices to determine a convection path and generate at least one airflow . The airflow accelerates the movement of the air pollutant along the convection path to move the air pollutant towards the closest processing device adjacent to the air pollutant for filtering, so that the air pollutant in the indoor space can be filtered rapidly to obtain a clean, safe and breathable air condition.

A system and method for secured and power-efficient communication between a sensor device and a control device operable in an air-quality system. The method includes receiving, during a first time period, a wake-up signal, wherein the wake-up signal includes at least a packet number; sending, during a second time period, an acknowledgment (ACK) signal, wherein an ACK signal is sent in reference to a synchronized time slot and a packet number; sending, during a third time period, at least sensor reading data of at least one air quality detector, wherein the sensor reading data is encrypted using at least an encryption key; receiving, during a fourth time period, a sleep signal; and entering into a sleep mode upon receipt of the sleep signal.

A system or method utilizes one or more outside sensors to measure one or more outside air parameters, and optionally one or more inside sensors to measure inside air parameters. A processor is configured to at least partially control the operation of an air cleaner based on at least one of the one or more outside air paraments, or a comparison of at least one of the one or more outside air parameters to at least of one of the one or more inside air parameters. The system and method may use artificial intelligence to provide additional information to the controller to assist in controlling the air cleaner.

A method for intelligently preventing and handling indoor air pollution is adapted to be implemented in an indoor space and includes providing a cloud processing device to receive and intelligently compare an outdoor gas detection data, an indoor gas detection data, and device gas detection data with each other. Then, the cloud processing device remotely transmits a control signal to the communication relay station and further to an indoor gas exchange system, so that the indoor gas exchange system is capable of intelligently enabling the gas processing device and controlling the operation time of the gas processing device for exchanging a polluted gas in the indoor space with the outdoor gas. Moreover, the gas exchanger can perform purification for the polluted gas at the location of the gas exchanger, thereby allowing the polluted gas in the indoor space to be exchanged into a clean, safe, and breathable gas.

A ventilation system with: (i) a volumetric enclosure having an inlet and an outlet and for coupling to an interior of a building habitable by human occupants; (ii) a fan located within the volumetric enclosure and for drawing air exterior to the building and supplying the air to the interior of the building; (iii) a programmable control apparatus for enabling and disabling the fan in response to a plurality of parameters, at least some of the parameters relating to quality of air to be moved in response to the fan; and (iv) circuitry coupled between the inlet and the outlet for measuring a signal representative of a volume of air passing through the volumetric enclosure over a period of time.

A fresh air ventilation device for air pollution prevention includes a main body, a blower, a filtering and cleaning assembly, and a gas detection module. The blower is disposed in the main body to guide air convection and form a flow-guiding path. The filtering and cleaning assembly is disposed in the flow-guiding path to filter and clean an air pollution source in the air convection guided by the blower. The gas detection module is disposed in the flow-guiding path of the main body to detect the air pollution source and transmit a gas detection data.

The application provides an air purifier comprising a shell assembly having air inlets and air outlets, and a filter assembly, an air inflow guide assembly, a fan and a diffusion air outflow assembly sequentially arranged from back to front. The filter assembly can purify air entering the filter assembly via the air inlets and flowing through the filter assembly. The air inflow guide assembly defines a guide channel between the filter assembly and the fan. The fan generates an air flow that flows into a first receiving cavity via the air inlets and sequentially flows through each assembly. The diffusion air outflow assembly can rotate to guide the air flow to the air outlets, enable the air flow to diffuse outwards and decrease the flow velocity of the air flow. The air purifier expands the purification range of the air purifier and improves the purification effect of the air purifier.

The application provides an air purifier comprising a shell assembly having air inlets and air outlets, and a filter assembly, an air inflow guide assembly, a fan and a diffusion air outflow assembly sequentially arranged from back to front. The filter assembly can purify air entering the filter assembly via the air inlets and flowing through the filter assembly. The air inflow guide assembly defines a guide channel between the filter assembly and the fan. The fan generates an air flow that flows into a first receiving cavity via the air inlets and sequentially flows through each assembly. The diffusion air outflow assembly can rotate to guide the air flow to the air outlets, enable the air flow to diffuse outwards and decrease the flow velocity of the air flow. The air purifier expands the purification range of the air purifier and improves the purification effect of the air purifier.

A system and method for initial calibration of an air-quality sensor device. The method includes establishing at least a reference response to an environmental condition based on a response of at least one calibrated detector to the environmental condition; establishing at least a sensor response to the environmental condition based on the response of at least one uncalibrated detector to the environmental condition; developing, based on the established sensor response, at least a sensor response slope; determining, based on the established reference response, the established sensor response, and the developed sensor response slope, at least a corrected response; and returning the corrected response.