Title:
粒子状物質検出装置
Document Type and Number:
Japanese Patent JP6596482
Kind Code:
B2
Abstract:
A particulate matter detection apparatus includes a sensor unit and a sensor control unit. The sensor unit outputs a single based on an amount of particulate matter. The sensor control unit detects a particle count of the particulate matter. The sensor control unit applies a first voltage to a pair of electrodes and electrostatically collects the particulate matter. After changing the applied voltage to a second voltage that differs from the first voltage in a state in which the sensor output at the first voltage has reached a threshold, the sensor control unit detects a resistance value between the pair of electrodes, and calculates the particle count using an average particle diameter of the particulate matter that is estimated from the resistance value and a mass of the particulate matter that is estimated from the sensor output.
Inventors:
Kazuhiko Koike
Miyagawa Go
Miyagawa Go
Application Number:
JP2017238902A
Publication Date:
October 23, 2019
Filing Date:
December 13, 2017
Export Citation:
Assignee:
株式会社SOKEN
株式会社デンソー
株式会社デンソー
International Classes:
G01N27/04; G01N15/02; G01N15/06
Domestic Patent References:
| JP201675668A | ||||
| JP2015225022A | ||||
| JP2016138449A | ||||
| JP201247722A |
Foreign References:
| WO2011083581A1 | ||||
| US20120186227 |
Attorney, Agent or Firm:
Patent Business Corporation Aichi International Patent Office