An Error Correction Control System and a Method for Eliminating Filter Belt Errors of a β Dust Meter

Abstract

The invention relates to an error correction control system and a method for removing filter belt quality errors. The system comprises a calibration module (11), a blank reference confirmation module (12), a corrected value calculation module (13), a unit area dust collection calculation module (14) and a particulate matter concentration output module (15), wherein the calibration module (11) is used for processing a blank filter belt count value and a standard membrane count value and storing calibrated data; the blank reference confirmation module (12) is used for determining a blank counting reference value and a reference point; the corrected value calculation module (13) is used for setting difference between a blank filter belt mass count value and mass of the reference point before sampling as a corrected value; the unit area dust collection calculation module (14) is used for correcting sampled mass increment; the particulate matter concentration output module (15) is used for calculating corrected inhalable particulate matter concentration. According to the system and the method, provided by the invention, the problem that output errors of a beta absorption dust counter are caused by non-uniform filter belt mass is solved under the condition of not increasing any external conditions.

Description

technical field [0001] The invention relates to the field of error correction of a β-absorbing dust measuring instrument, in particular to an error correction control system, a dust measuring instrument and a method for eliminating quality errors of a filter belt. Background technique [0002] Beta rays radiated by a radioactive source can be converted into electrical pulses (frequency) using a ray sensor and associated electronics. Since low-energy (<1MeV) β-rays pass through matter, their energy is absorbed and attenuated by the matter, and studies have shown that the degree of attenuation is related to the quality of the matter that passes through it. Therefore, the change of the pulse frequency is also related to the quality of the matter that passes through it. "β Absorption Dust Meter" uses this principle for measurement. [0003] In order to eliminate the error caused by the fluctuation of the radioactive source, the "β absorption dust detector" needs to count and...

AI Technical Summary

Problems solved by technology

Although the existing technology has also discovered the unevenness of the filter belt, and everyone has been improving the quality of the filter belt for decades, in fact, the problem of uneven filter belt has not been solved fundamentally, or because of the addition of external equipment or other conditions, but cause other more inconvenience

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