Self-adaptive front-end air inlet system for oil smoke monitoring

Abstract

The invention discloses a lampblack monitoring self-adaptive front-end gas inlet system which comprises a gas chamber, a first temperature and humidity sensor, a second temperature and humidity sensor, a driving circuit, a single chip microcomputer, a gas pump, a gas drying device, a gas heating and cooling device, a metal filter screen and an alarm. The air chamber is of a central symmetry structure; the air pump comprises an air inlet pump arranged between the air inlet and the first temperature and humidity sensor and an air outlet pump arranged between the second temperature and humidity sensor and the air outlet; the metal filter screen is fixed on the inner wall of the gas chamber, the gas drying device is arranged in the gas chamber, and the gas heating and cooling device, the single-chip microcomputer, the alarm and the driving circuit are arranged on the periphery of the gas chamber. According to the invention, self-adaptive dehumidification, heating or cooling of oil smoke is realized through a PID control algorithm, and severe interference of temperature and humidity on a subsequent test result of the oil smoke detection probe is avoided. Error of the system can be known through alarm of the alarm, and loss of a restaurant caused by abnormal test results is reduced.

Description

technical field [0001] The invention belongs to the technical field of oil fume detection, and in particular relates to an adaptive front-end air intake system for oil fume monitoring. Background technique [0002] Most of the current probes used to test the concentration of soot and particulate matter use laser scattering technology. When the gas to be tested enters the internal cavity of the sensor, the particles in the gas will cause the laser to scatter. The program analyzes the equivalent particle size and concentration of the particles according to the scattering degree of the laser. During this process, the laser encounters fog or water vapor. The same scattering phenomenon will also occur, which will cause the sensor to mistakenly regard the water mist and water vapor as particulate matter for collection and calculation, which will greatly deviate or even falsely report the test results. rectify. [0003] Therefore, it is necessary to provide an adaptive front air ...

AI Technical Summary

Problems solved by technology

When the gas to be tested enters the inner cavity of the sensor, the particles in the gas will cause the laser to scatter. The program analyzes the equivalent particle size and concentration of the particles according to the degree of scattering of the laser. During this process, the laser encounters fog or water vapor The same scattering phenomenon will also occur, which will cause the sensor to mistakenly collect and calculate water mist and water vapor as particulate matter, resulting in large deviations or even false positives for the test results. This may cause false alarms for restaurants that emit excessive oil fume and cause restaurants to be fined or closed. rectify

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