DUST SENSOR AND ELECTRONIC PRODUCT USING THE SAME

摘要

A dust sensor includes a multi-wavelength light source, a receiver, and a controller. The light source emits light of different wavelengths. The receiver generates one or more acoustic wave measurement values based on acoustic waves irradiated from the light source to air particles. The controller controls at least one flickering cycle of the light source, determines the type particles based on the acoustic wave measurement values, and calculates the concentration of particles. The controller calculates the concentration of particles in proportion to an intensity of the acoustic wave measurement values, and determine the type of particles based on the acoustic wave measurement values. The acoustic waves are generated differently based on wavelengths of light emitted from the multi-wavelength light source.

主权项

1. A dust sensor, comprising:
a multi-wavelength light source to emit light of different wavelengths; a receiver to generate one or more acoustic wave measurement values based on acoustic waves irradiated from the multi-wavelength light source to air particles; and a controller to control at least one flickering cycle of the multi-wavelength light source, determine a type of one or more of the particles based on the one or more acoustic wave measurement values and calculate a concentration of the particles, wherein the controller is to calculate the concentration of particles in proportion to an intensity of the one or more acoustic wave measurement values and is to determine the type of the one or more of the particles based on the one or more acoustic wave measurement values, the acoustic waves to be generated differently based on the wavelengths of light emitted from the multi-wavelength light source.