Patent ID: 8915119

Claim:
A detection apparatus, comprising: a particulate matter detection unit that includes an insulator that is disposed in an exhaust path of an internal combustion engine through which an exhaust gas flows, a pair of electrodes that are arranged in contact with at least a part of the insulator, and a detector that detects a particulate matter detection value which is a value correlated to an amount of particulate matter in the exhaust gas, the particulate matter attaching to the insulator and enabling current to flow between the pair of electrodes while voltage is applied across the pair of electrodes; an exhaust temperature detection unit that detects an exhaust temperature of the exhaust gas passing through the particulate matter detection unit; an insulator temperature detection unit that detects an insulator temperature of the insulator; and a correction unit that corrects the particulate matter detection value detected by the particulate matter detection unit based on the exhaust temperature detected by the exhaust temperature detection unit and the insulator temperature detected by the insulator temperature detection unit.