Collection method for particulate matter detector

A collection method for a particulate matter detector, comprising the following steps:

• S1, collecting N groups of initial air particulate matter values according to an initial collection duration t1;
• S2, performing normalized calculation on the collected N groups of initial air particulate matter values, to calculate an initial particulate matter variation r1 among the initial air particulate matter values, and calculating an initial air particulate matter value d0 according to the initial air particulate matter values;
• S3, obtaining a real-time collection cycle coefficient t2 by performing calculation on the initial particulate matter variation r1 through a stepwise approximation method and table lookup;
• S4, calculating a real-time particulate matter collection interval time t4 according to the real-time collection cycle coefficient t2 and a shortest collection interval time t3 of the particulate matter detector;
• S5, collecting an air particulate matter value again after the real-time collection interval time t4, where the air particulate matter value collected at this time is a latest air particulate matter value d1;
• S6, performing normalized calculation on the latest air particulate matter value d1 and a data value d0 displayed by the particulate matter detector, to calculate a real-time particulate matter variation r2;
• S7, obtaining a new real-time collection cycle coefficient t2 by performing calculation on the real-time particulate matter variation r2 through the stepwise approximation method and table lookup, wherein the latest air particulate matter value d1 is assigned to the initial air particulate matter value d0 in this case;
• and
• S8, repeating the steps from S4 to S7.