| 摘要 |
There is disclosed a particulate matter detection device which has a high measurement precision and which is excellent in the corrosion resistance of measurement electrodes. A particulate matter detection device (100) includes a first electrode (1) having a plate-like shape 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 (5,15) and having a volume resistivity of 10 ©cm to 10 12 ©cm, and the variate of electric properties between the pair of measurement electrodes (5,15) is measured, whereby the amount of the collected particulate matter can be obtained.
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