The invention relates to a dust sensor based on a continuously changing
barrier layer. It belongs to the field of electronic technology. The main technical problem it solves is to overcome the insufficiency of the existing photoelectric sensors that directly contact the
smoke and dust. It consists of upper film rotation shaft, upper slave rotation shaft,
infrared sensor, lower film rotation shaft, lower film driven shaft,
infrared light-emitting tube, upper film, lower film, upper opening, lower opening, sampling
flue wall, sampling
smoke It is composed of a duct, a
flue, a single-
chip microcomputer, an analog-to-
digital conversion module, an
operational amplifier, a
relay, a
triode, an upper film rotating motor, and a lower film rotating motor. The upper film, the upper opening, the sampling
flue, the lower opening and the lower film are connected with the
infrared light-emitting tube, the lower film rotating shaft is connected with the lower film driven shaft through the lower film, and the upper film rotating motor and the lower film rotating motor are connected by a
relay , transistors, resistors, connected with the
microcontroller. It is mainly used in the field of high-
voltage electrostatic dust removal.