Abstract: An air quality management system comprises a plurality of air quality sensors to sense air quality within a building, a plurality of air cleaning devices, and a computer system in communication with the plurality of air quality sensors and the plurality of air cleaning devices. The plurality of air quality sensors is located at a particular location within the building. The computer system determines a correlational model of air quality for the building that indicates a correlational relationship between the sensed air quality, a spatial parameter, a temporal parameter, and operation of the air cleaning devices. The computer system controls the plurality of air cleaning devices to implement an air quality control policy based on one or more air quality management parameters.

Abstract: An air quality management system comprises a plurality of air quality sensors to sense air quality within a building, a plurality of air cleaning devices, and a computer system in communication with the plurality of air quality sensors and the plurality of air cleaning devices. The plurality of air quality sensors is located at a particular location within the building. The computer system determines a correlational model of air quality for the building that indicates a correlational relationship between the sensed air quality, a spatial parameter, a temporal parameter, and operation of the air cleaning devices. The computer system controls the plurality of air cleaning devices to implement an air quality control policy based on one or more air quality management parameters.

Abstract: Air quality sensor comprises an optical particle sensor and a programmable processor circuit. The optical particle sensor detects particles having a size of 10 microns or less in diameter in ambient air of the optical particle sensor. The programmable processor circuit continuously computes updated air quality measures for the ambient air using an estimation algorithm based on pulses in an output signal from the particle sensor over time, such as a cumulative particle density value and/or a cumulative particle weight value. The optical particle sensor may comprise a LED and accordingly detect particles based on reflection of light energy from the LED by particles in a chamber of the sensor.