Particulate matter detection device

摘要

There is disclosed a particulate matter detection device having a simple constitution and capable of accurately detecting a particulate matter. A particulate matter detection device 100 includes a plate-like element base material 31 including, on one surface thereof, a formed recess portion 32 to collect a particulate matter; a pair of measurement electrodes 12a and 12b arranged on the bottom surface side of the recess portion 32 of the element base material 31; and a high-voltage dust collection electrode 41 embedded in a wall 45 which forms the recess portion 32 of the element base material 31 on the one surface side of the element base material from a position where the pair of measurement electrodes 12a and 12b are arranged. An electric field is generated from the high-voltage dust collection electrode 41 to the pair of measurement electrodes 12a and 12b, to collect, on the bottom surface 32a side of the recess portion 32, the particulate matter included in a measurement target gas flowing along the element base material 31, and a change of electric characteristics between the pair of measurement electrodes 12a and 12b is measured to detect the particulate matter collected on the bottom surface 32a side of the recess portion 32.