Particulate matter measuring device with automatic calibration module

• Main Authors: YIN GUANGSHENG, CHEN ZHANHUI, GUO HUANLI, AN RUIJUN, LI MINGMING
• Format: Patent
• Language: Chinese; English
• Published: 11.02.2022
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The utility model relates to a particulate matter measuring device, in particular to a particulate matter measuring device with an automatic calibration module. Comprising a laser transmitter, a beam splitter, a gas chamber, a lens and a photoelectric receiver, and direct light emitted by the laser transmitter enters the gas chamber through the beam splitter and is reflected to the lens through particles in the gas chamber to enter the photoelectric receiver. The automatic calibration device further comprises an automatic calibration module, the automatic calibration module comprises a reflecting mirror, a reflecting mirror driving mechanism and a first light trap, and the reflecting mirror is arranged on a reflecting light path of the light splitting piece and can enable reflecting light of the light splitting piece to directly penetrate through the air chamber to enter the photoelectric receiver. The output end of the reflector driving mechanism is connected with the reflector, and the first light trap is u