| abstract |
A particulate matter detection device 100 includes a first electrode 1 and having one surface covered with a dielectric material; a second electrode 2 which is disposed on the side of the one surface of the first electrode 1 via a space where a gas including a particulate matter flows and which performs one or both of the formation of discharge and an electric field by a voltage applied between the first electrode 1 and the second electrode; a pair of measurement electrodes 5, 15 disposed on the surface of the dielectric material so as to face each other; and a protective film 21 disposed on the surfaces of the pair of measurement electrodes and having a volume resistivity of 10 Ωcm to 10 12 Ωcm, and the variate of electric properties between the pair of measurement electrodes is measured, whereby the amount of the collected particulate matter can be obtained. |