Patent ID: 8539817

Claim:
A particulate matter detection device comprising: a plate-like element base material including, on one surface thereof, a formed recess portion to collect a particulate matter; a pair of measurement electrodes arranged in a bottom surface of the recess portion of the element base material or in the element base material on the bottom surface side of the recess portion; and a high-voltage dust collection electrode embedded in a wall which forms the recess portion of the element base material at the same height position as a position where the pair of measurement electrodes are arranged in a depth direction of the recess portion or on the one surface side position of the element base material from the position where the pair of measurement electrodes are arranged, wherein an electric field is generated from the high-voltage dust collection electrode to the pair of measurement electrodes arranged in the bottom surface of the recess portion or in the element base material on the bottom surface side of the recess portion, to collect, on the bottom surface side of the recess portion, the particulate matter included in a measurement target gas flowing along the element base material, and a change of electric characteristics between the pair of measurement electrodes is measured to detect the particulate matter collected on the bottom surface side of the recess portion.