PARTICLE DETECTION SENSOR, MOBILE ENTITY ONBOARD GAS MONITOR, AND PARTICLE DETECTION METHOD

摘要

PROBLEM TO BE SOLVED: To reduce the degradation of detection accuracy even in cases where a particle detection sensor vibrates.;SOLUTION: A particle detection sensor 1 comprises a light projection element 111 and a light receiving element 121, and a signal processing unit 20 for processing time-series signals indicating outputs from the light receiving element 121 and thereby calculating the mass concentration of particles included in a fluid. The signal processing unit 20 acquires a pulse-shaped reference waveform that is a basis for the case where the particle detection sensor 1 is in a non-vibrating state, acquires a pulse-shaped measurement waveform included in the time-series signals, and calculates a mass concentration without making corrections when time widths pertaining to a reference waveform and a measurement waveform whose peak values approximately match, and calculates a mass concentration after making corrections when the time widths do not match.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2017,JPO&INPIT